How does a concrete foaming agent work?

In construction, concrete is a widely used building material, and its performance is crucial to the safety and durability of buildings. Concrete foaming agents, essential additives in concrete preparation, gradually attract people's attention. This article will introduce the mechanism of concrete foaming agents and reveal its magical power to you.

(concrete foaming agent)

Characteristics and types of concrete foaming agents

Concrete foaming agent is a particular surfactant that can reduce the surface tension of liquid and produce a large amount of uniform and stable foam. These foams can significantly improve concrete's fluidity, stability, and strength and enhance its durability and crack resistance. Concrete foaming agents are mainly divided into polymers, surfactants and resins according to their chemical properties and application fields.

The action mechanism of concrete foaming agent

1. Improve the fluidity of concrete: By introducing foam, concrete foaming agents can significantly improve the fluidity of concrete. The foam's presence reduces the concrete's density, making it easier to mix and pump. At the same time, the uniform distribution of foam in concrete also helps improve its strength and durability. The development and maintenance of foam during pouring are critical factors, allowing the concrete mixture to fill the formwork better and reduce the formation of pores and air bubbles, thus increasing the density and strength of the concrete.

2. Improve concrete stability: The foam produced by concrete foaming agents has high strength and can effectively improve the stability of concrete. These foams play a supporting and stabilizing role during the hardening process of concrete, preventing segregation and bleeding of concrete. They also act as buffers during the cement hydration process, slowing down the heat and pressure fluctuations generated during the hydration process, thus improving the overall stability of the concrete.

(Cement with concrete foaming agent added)

3. Enhance the strength of concrete: After the introduction of foam, the porosity inside the concrete is significantly reduced, thereby improving the compactness of the concrete. The increase in density increases the strength of concrete, improving its load-bearing capacity and durability. The tiny pores formed by foam in concrete can effectively absorb and disperse the stress acting on the concrete surface, preventing the occurrence and development of cracks. At the same time, these tiny pores can also serve as storage spaces for hydrates, a product of the cement hydration process, thereby further improving the strength and durability of concrete.

4. Enhance the crack resistance of concrete: By introducing foam, the crack resistance of concrete is significantly improved. The tiny pores formed by foam in concrete can effectively absorb and disperse the stress acting on the concrete surface, preventing the occurrence and development of cracks. At the same time, foam can also improve the toughness of concrete, making it less likely to crack when subjected to impact or vibration. In addition, the stability of the foam can also inhibit volume changes caused by temperature changes, further improving the crack resistance of concrete.

5. Energy saving and emission reduction: Applying concrete foaming agents can also achieve energy saving and emission reduction. After using foaming agents, the same substantial volume weighs less, reducing energy consumption during transportation and pouring. In addition, foaming agents can also improve the thermal insulation performance of concrete and reduce the energy consumption of buildings. By optimizing the mix ratio and using foaming agents, more efficient energy utilization and reduced environmental pollution can be achieved.

(Cement with concrete foaming agent added)

Suppliers of concrete foaming agent:

TRUNNANO is the global leader of Low-Density Cellular Concrete (LDCC), Celluar Light Concrete (CLC) and advanced engineered foam solutions. Known globally for its commitment to research, innovation, and applied expertise, we have been providing engineered foam solutions since the early 2012's.

Key points for door and window caulking, foaming agent VS cement, which one is better?

When installing doors and windows, how should the gaps between the opening and the window frame be dealt with? The door and window measuring tape and final production size will be 1-2cm smaller than the window to facilitate later installation and avoid direct contact between the window frame and the wall. The remaining gaps need to be filled. So what does caulking do?

1. It can weaken the influence of stress on doors and windows. Doors and windows will be strained by wind pressure, and corresponding resistance deformation will occur inside the profile. Long-term use may cause damage to the wall around the window frame or cracking of the colloid. Caulking well can play a role in shock absorption and increase stability.

2. It can reduce the risk of water seepage in doors and windows. During the installation of doors and windows, the gaps between the window frame and the wall is generally filled with weather-resistant glue. If water leakage may occur due to later aging, door and window caulking is equivalent to adding a barrier inside and outside the window frame to reduce the risk of water seepage in doors and windows.

3. It can reduce the risk of window sinking. Generally, cement mortar or a qualified foaming agent is used to fill the window frame joints, which can play a certain supporting role.

Regarding how to choose caulking materials, let’s talk about which foaming agent or cement mortar is more suitable in terms of price, performance and operability.

Let’s talk about the price first. The cost-effectiveness of cement mortar is higher than that of foaming agents. The mortar caulking operation is complex and the construction period is long. The cost of using cement caulking is relatively high when considering labor costs.

Let’s talk about performance. In terms of coping with the stress of doors and windows, due to the significant difference in linear expansion coefficient between the cement mortar and the window frame, the ability to cope with the deformation of doors and windows is poor. After curing, when doors and windows respond to various pressures or switches for a long time, cracks are prone to appear on the surface. Affects the overall performance of doors and windows.

The foaming agent is a flexible material, which is equivalent to a shock-absorbing belt when filled between the walls, and has a good effect on alleviating the stress of doors and windows.

As for cement mortar or foaming agent, which one is better? In terms of waterproof performance, because the reasons for water leakage and water seepage in doors and windows are relatively complicated, and the two materials have their own advantages, there has yet to be a conclusion in the door and window industry.

So what issues should we pay attention to when caulking doors and windows?

1. Use foaming agent to fill the gaps. Dust and stains on the window surface should be cleaned before foaming to avoid the problem of weak adhesion. Also note that you need to sprinkle water to increase the humidity of the window to prevent the problems of heartburn and insufficient expansion of large holes in the foaming agent. Check whether there are any missing gaps and fill them in time.

2. When using cement mortar to fill the gaps, the mortar filled into the bottom of the frame must be dense and evenly in contact with the bottom of the frame. The gaps must be dense and without hollows. The mortar between the inside and outside of the door and window openings and the window frame should be filled and smoothed.

In fact, there are many ways to caulk doors and windows, but cement and foaming agent caulking are the two most commonly used in daily use.

Supplier

TRUNNANO is a supplier of concrete foaming agent with over 12 years experience in nano-building energy conservation and nanotechnology development. It accepts payment via Credit Card, T/T, West Union and Paypal. Trunnano will ship the goods to customers overseas through FedEx, DHL, by air, or by sea. If you are looking for high-quality concrete additives, please feel free to contact us and send an inquiry. 

building materials industry indispensable good material

Amazing! The best building material for the industry.

Cement foam board is widely used. Its superior performance can be seen in:

Achieving good fire insulation performance

Cement foam The board is classified as a non-combustible, inorganic thermal insulating material of class A. It can withstand high temperatures and improve the fire performance. Closed porosity is more than 95%. It has excellent thermal insulation properties.

Sound insulation with excellent performance

Cement foam board can have a sound insulation coefficient of more than 45 decibels due to its porous bubbles.

Lightweight seismic capacity

The density of cement foam board was about 250kg/cubic-meter. It passed the antifatigue vibratory test, and it can withstand a nine magnitude earthquake after welding steel structure.

Construction is efficient and convenient

Cement Foam Board can be easily constructed, requires a shorter construction period, does not require extra materials like sand or cement, is stackable and easy, uses less equipment, produces no waste, and doesn't require plastering. Cement Foam Board can be constructed in 60 minutes by three people, compared to the traditional block walls.

Strengthens the bonding and compression forces

The national testing agency has verified that the addition of special fibre increases the compressive force of cement foam boards. Its bending load can be up to three times their weight (1.5x the national standards), the compression strength can be over 5MPa (3.5MPa for the national standards), and the hanging strength is above 1,500N (1,000N for the national standards).

Environment protection, energy savings and non-toxic and safe

Cement fly ash is used to make cement foam. It won't melt at high temperatures, and it doesn't emit any toxic gases. It's a material that is both environmentally friendly and safe. Cement foam board is not recyclable, and this fact has been recognized by the national industrialization policy.

Cement Foam Board is used widely in industrial plants with large spans, storage facilities, large machine workshops, stadiums exhibition halls airports large-scale utilities and mobile homes as well as residential mezzanines and residential wall insulation. The problems associated with foam insulation before have been overcome by cement foam board. These include poor thermal insulation properties, high thermal conduction, and cracking.

Which is the best way to backfill a bathroom

The backfilling of the bathroom is a crucial part of any renovation. Backfilling is an essential part of bathroom renovations. It has many purposes, including protecting the pipeline from leakage, improving the thermal insulation, etc. In selecting bathroom materials, you should consider several factors depending on your specific situation. For example, take into account the performance and cost of backfill material as well as environmental protection.

There are five types of backfills available on the market: ceramic backfills (common slag), carbon slag re-fills (carbon slag re-fills), overhead re-fills and foam cement. There's some confusion over different backfills.

Backfilling with slag can be cheaper, but because it is heavy and difficult to work with, the slag will crack the floor slab easily. This could lead to leakage of water.

It is cheaper to use overhead backfill because you don't need as much material.

Since a few decades, foamed concrete has been popular for filling bathroom backfill. But does foam cement come with any disadvantages?

For your information, here are five bathroom backfill materials with their advantages and disadvantages and some selection advice:

Building debris backfill

Advantages:

The advantages of slag backfill are its lower cost, ease of construction and certain thermal insulation properties.

Disadvantages:

Backfilling with construction waste will damage the waterproof layer and the pipeline due to its sharp edges.

Recommendation:

Has been eliminated. This is not a method that should be used. It will cost too much for a family to backfill with construction debris. To protect the waterproofing of the ground, first use fine sand, then red bricks, to protect the pipeline. The backfill should be compacted in layers. Finally, mud-mortar to level the surface will provide good secondary drainage.

Carbon Dregs Backfill

Advantages:

Carbon slag as a backfill has many advantages, including its low cost, ease of construction, lightweight structure, good moisture absorption, and excellent moisture control.

Disadvantages:

The disadvantages of carbon dregs are that they are not stable enough. They can easily deform, fall off and be relatively flimsy.

Recommendation:

In recent years, carbon slag has rarely been chosen as a backfill in bathrooms due to its negatives.

Ceramic Backfill

Advantages:

Ceramic backfill has many benefits, such as being lightweight, strong, corrosion resistant, and having a long life.

Disadvantages:

Before pouring in the ceramic, use lightweight bricks for layered partition. Divide the bathroom into several squares. Fill the squares with the ceramic, then place a reinforcing mesh with a diameter around one centimetre. Finally, level with cement mortar.

Suggestion: Look at your family's budget and take it into consideration.

Overhead Backfill

Advantages:

Backfilling with overhead backfill has many advantages, including its simplicity, stability, inability to deform and easy fall-off.

Disadvantages:

The labour cost of backfilling is higher because the construction cycle is longer. The bottom drain is located overhead and will make the sound of running waters more noticeable.

It is important to carefully consider whether the disadvantages of the situation outweigh any advantages.

Foamed Cement Backfill

Advantages:

Foamed cement is an increasingly popular backfill. It is also safe and eco-friendly. The raw material for cement foaming agents, plant-based fat acid, is both safe and environmentally friendly.

Benefits include good heat conservation, light weight, high strength and corrosion resistance. The backfilling process is greatly accelerated and reduced in cost, as it can be filled seamlessly and with very little effort.

Foamed cement can be mixed with cement and used to fix the pipe. If not, the pipe will easily float.

Disadvantages:

It is best to find a builder that has worked with foam cement or look up construction tutorials.

Suggestion:

The majority of people backfill their bathrooms with foamed-cement. Its advantages are still quite obvious.

The five types of backfill for bathrooms all have advantages and disadvantages. In order to choose the right material for your bathroom backfill, you should consider many factors. You must always consider the environment when choosing bathroom backfill materials to ensure the decor of the bathroom is safe and sustainable.

Properties and Application of Hafnium Carbide

Hafnium carbide (HfC), is a chemical compound with a distinct character. It has many uses.

1. Hafnium Carbide: Its Properties

Hafnium carburide is a grayish powder that belongs in the metal carbide category. It has high melting points, good hardness and high thermal stability.

Physical property

Hafnium carburide crystals have a cubic face-centered structure and a lattice constant 0.488nm. It is a hard material with a melting temperature of 3410 degrees Celsius.

Chemical property

Hafnium carburide is insoluble and chemically stable in water, acid-base solutions and other liquids. It is not easily affected by high temperatures. This material is stable at high temperatures. Hafnium carburide has a high radiation resistance, and is therefore suitable for use in nuclear reactors and particle acceleraters.

2. Hafnium Carbide Application

Hafnium carbide is used widely in many industries due to its high melting points, high hardness as well as good thermal and chemical properties.

Electronic field

Hafnium carburide is widely used in electronic fields, and it's a key component of electronic glue. Hafnium carburide can be used to increase the adhesion and conductivity in electronic paste. Hafnium can be used to improve the reliability of electronic devices by using it as a sealant.

Catalytic field

Hafnium carburide is a great catalyst for many chemical reactions. One of the most common uses is in auto exhaust treatment, which reduces harmful gas emissions. Hafnium carburide is used as an hydrogenation catalyst, a denitrification catalyst, and many other things. It's widely used for hydrogen production, petrochemicals and more.

The optical field

Hafnium carbide is transparent, and it can be used for optical components and fibers. It can enhance the durability of optical elements and reduce light losses. Hafnium carbide can be used for key components such as lasers, optoelectronics devices and optical fields.

Ceramic field

Hafnium carbide can be used to improve the density and hardness of ceramic materials. Hafnium carbide is also used to produce high-performance materials, like high-temperature and structural ceramics. Hafnium carbide can be used to grind and coat materials.

RBOSCHCO

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Application Fields of Gallium Nitride

The wide-gap semiconductor material GaN is widely used due to its excellent electrical, optical and physical properties.

1.Semiconductor light

Gallium Nitride is widely used in semiconductor lighting. The high luminescence and high reflectivity of gallium nitride material make it ideal for high-performance, LED lamps. LED lamps offer a higher level of luminous efficiency than fluorescent and incandescent bulbs, as well as a longer life span. This makes them suited for use in many fields, including indoor and exterior lighting, displays, automobile lighting, etc.

In semiconductor lighting materials such as gallium nitride are used primarily as substrates for the LED chips. LED chips, the main components of LED lighting, are directly responsible for the overall performance. They determine the LED light's luminous efficacy and service life. Gallium Nitride is an excellent substrate material because it has high thermal conductivity. It also has high chemical stability and stability. It improves the LED chip's luminous stability and efficiency, as well as reducing manufacturing costs.

2.High-temperature electronic devices

Gallium Nitride is also widely used for high-temperature electronics devices. Gallium nitride, which has high breakdown electric fields and electron saturation rates, can be used for electronic devices that work in high-temperature environments.

Aerospace is a harsh field and it's important to have electronic devices that work reliably in high temperature environments. Gallium nitride as a semiconductor high-temperature material is primarily used to make electronic devices like transistors and field effect transistors for flight control systems and fire control. Gallium nitride is also used in power transmission and distribution to produce high-temperature devices, such as power electronics switches and converters. This improves the efficiency and reliability of equipment.

3.Solar cells

Gallium nitride solar cells also receive a lot attention. High-efficiency solar panels can be produced due to its high transparence and electron saturation rate.

Silicon is the main material in most traditional solar cells. Silicon solar cells are inexpensive to manufacture, but have a narrow bandgap (around 1.1eV), which limits their efficiency. Gallium-nitride solar cell have a greater energy gap (about 2eV) which allows them to absorb more sunlight, and has a higher conversion efficiency. The manufacturing cost of gallium-nitride cells is low. They can offer the same photoelectric converter efficiency for a lower price.

4.Detectors

Gallium Nitride is also widely used as a detector. They can be used to manufacture high-efficiency detectors like spectral and chemicals sensors.

Gallium Nitride can also be used as a material to make X-ray detectors that are efficient and can be applied in airports or important buildings for security checks. Gallium nitride is also used for environmental monitoring to produce detectors like gas and photochemical sensor, which detect environmental parameters, such air quality, pollutants, and other environmental parameters.

Other applications areas

Gallium nitride can be used for many different applications. Gallium nitride is used, for instance, to make microwave and high frequency devices such as high electron mobilty transistors (HEMTs), microwave monolithic combined circuits (MMICs), that are used in fields like radar, communications, and electronic countermeasures. Additionally, gallium nitride It can also be used for the manufacture of high-power lasers and deep ultraviolet optoelectronic gadgets.

What is Lithium stearate powder

Lithium stearate is a crystalline form of lithium.

Lithium stearate has the chemical formula LiSt. It is a white powder that is solid at room temperatures. It is a highly lipophilic compound that can produce high light transmission at low concentrations. This compound is slightly water soluble at room temperatures and readily soluble with organic solvents, such as ethanol or acetone. The high melting and flashpoint of lithium stearate makes it stable and thermally safe at high temperatures. The lithium stearate also has good chemical resistance and is resistant to acids and bases, as well as oxidants, reductants and reducing agents. Lithium is less toxic than other metals, but should still be handled with care. An excessive intake of lithium can lead to diarrhoea or vomiting as well as difficulty breathing. Wearing gloves and goggles during operation is recommended because prolonged exposure to lithium can cause eye and skin irritation.

Lithium stearate:

Surfactant: Lithium Stearate Surfactant, lubricant, and other ingredients are used to make personal care products, such as shampoos, soaps, body washes, and cosmetics. It is hydrolysis stable and has excellent foam properties. This makes it a gentle and clean way to wash.

Lithium stearate has an important role to play in polymer syntheses. It can be used both as a donor and a participant in the formation of polymer chains. These polymers have good mechanical and chemical properties, making them ideal for plastics, rubber fibers, etc.

Lithium stearate can be used in cosmetic formulations to soften and moisturize the skin. It enhances moisturization, and makes skin feel softer. The antibacterial and antiinflammatory properties of lithium stearate can also help with skin problems.

Paints & Coatings - Lithium stearate can be used to thicken and level paints & coatings. It helps control the flow & properties of final coatings. It is resistant to weather and scratches, which makes the coating durable.

Applications of lithium stearate include drug carriers, excipients, and stabilizers. It can enhance the stability of medications and also improve their taste and solubility.

Agriculture: Lithium is used as a carrier for fertilizers and a plant-protection agent. It increases the efficiency of fertilizers and improves plant disease resistance.

Petrochemical: In the petrochemical industries, lithium stearate may be used as an lubricant or release agent. As a catalyst in petroleum cracking, lithium stearate improves cracking yield and efficiency.

Lithium Stearate Production Process :

Chemical Synthesis:

Lithium stearate can be synthesized through a series if chemical reactions. In order to get the two reacting fully, lithium metal is heated in an organosolvent and stirred. After washing and drying, the pure lithium-stearate product is obtained.

Following are the steps for synthesis.

(1) Lithium metal and stearate in organic solvents, such as ethanol heated stirring to fully react.

(2) The reaction solution must be cooled in order to precipitate lithium stearate.

(3) Wash the crystal with water and remove any lithium stearate particles.

(4) The dried crystals are used to make lithium stearate.

Chemical synthesis is characterized by a matured process, high efficiency in production and high product quality. However, organic solvents have a negative impact on the environment. A certain amount of waste is generated during production.

Methode de fermentation biologique

In biological fermentation, microorganisms such as yeast are used in the medium to produce lithium. This method works on the principle that microorganisms produce stearic and react with metal ions, such as lithium, to create lithium stearate.

These are the steps that you will need to take in order to produce your product.

(1) The microorganisms will be inoculated onto the medium containing the precursor substances to fermentation culture.

(2) The filtrate is used to produce a solution of stearic acetic acid.

Add metal ions, such as lithium ions, to the stearic solution so that they fully react.

(4) The reaction product is separated and washed, then dried to give lithium stearate.

The benefits of biological fermentation include environmental protection, less waste discharge and a longer production process. However, the conditions for production are also higher.

Prospect Market for Lithium stearate

The application of lithium in personal care will continue to play a major role. As a surfactant or lubricant it is important in soaps. shampoos. body washes. and cosmetics. As people's standards of living improve and the cosmetics sector continues to expand, lithium stearate demand will gradually rise.

Second, the use of lithium stearate for polymer synthesis has also increased. It can be used both as a donor and a participant in polymer chain formation. As polymer materials science continues to develop, the demand of lithium stearate increases.

Lithium stearate's application in agricultural, petrochemical, pharmaceutical and other fields is expanding. In the pharmaceutical sector, lithium stearate may be used as a carrier, excipient or drug stabilizer. In agriculture, the lithium stearate is used to protect plants and as a carrier for fertilizer. In petrochemicals, lithium isostearate acts as a lubricant or release agent. In these areas, the demand for lithium will increase as technology advances.

But the outlook for the lithium stearate market is not without its own challenges. In order to produce lithium metal, it is necessary to use a more expensive production process. Aside from that, the applications of lithium is limited, with a concentration in agriculture, petrochemicals, polymer syntheses, personal care products, and pharmaceuticals. To expand the scope of application and the demand for lithium stearate, it is important to continue to develop new applications and markets.

Lithium stearate powder price :

Many factors influence the price, such as the economic activity, the sentiment of the market and the unexpected event.

You can contact us for a quotation if you're looking for the most recent lithium stearate price.

Lithium stearate powder Supplier:

Technology Co. Ltd. has been a leading global supplier of chemical materials for over 12 years.

The chemical and nanomaterials include silicon powders, graphite particles, zinc sulfide grains, boron grains, zinc oxide, etc.

Contact us today to receive a quote for our high-quality Lithium Stearate Powder.

More than a hundred schools in the UK have been closed due to the risk of collapse

In the UK, more than 100 schools were closed because of the danger of collapse

In the UK, many schools use Autoclaved aerated cement (RAAC). This is a concrete material that is lighter.

In 2018, the roof and the buildings of a school in southeast England collapsed. It was later discovered that RAAC had been used. This raised safety concerns.

BBC reported that RAAC materials were widely used from the 1950s until the mid-1990s in areas such as roof panels, and had a lifespan of around 30 years.

This building safety risk is reported to exist not only in schools, but also in hospitals, police stations, and other public structures. RAAC material has been found.

The Royal Dengate Theatre at Northampton is temporarily closed after RAAC material was found.

According to NHS, RAAC has been detected in 27 hospital building.

The NHS chief has been asked for measures to be taken to prevent collapse.

BBC reported that since 2018 the British government has warned schools to "fully prepare" for the possibility of RAAC in schools and public buildings.

The Independent reported Jonathan Slater, former senior official of Department of Education. Slater said that when Sunak was chancellor of treasury in 2021, Sunak approved cuts to budgets for the construction of schools.

Nick Gibb is a senior official at the Department of Education. He said that the Department of Education asked for PS200m annually for school maintenance. Sunak was the former chancellor of exchequer and provided just PS50m a year.

The report also states that despite Sunak having promised to renovate at least 50 schools a month, only four have been renovated as part of the main reconstruction plan.

The British National Audit Office chief also criticized this crisis. He claimed that the Sunak government had adopted a "plaster-method" of building maintenance.

He believes the government's underinvestment has forced schools to close, and that families are now "paying the cost".

Paul Whitman is the secretary-general of National Association of Principals. He said that the public and parents would perceive any attempt to blame individual schools on the government as "a desperate move by the federal government to divert its attention from their own major errors."

Whitman claimed that the classroom has become completely unusable. Whitman blamed the British Government for this. "No matter what you do to divert or distract, it won't work."

London Mayor Sadiq khan said that the government should be open and transparent. This will reassure parents, staff, children, and others.

BBC reported schools in the UK were pushing forward with inspections and assessments. Children who had been suspended because of school building issues will be temporarily housed, or they can learn online.

High Purity 3D Printing Nickel Alloy IN718 Powder

In718 Powder is widely used for industrial and aviation turbo-propellers, petrochemical, nuclear reactors, and other fields.Particle Size: 15-45mm; 15-53mm; 53-120mm and 53-150mm

Metal Alloy 8.92g/Cm3 High Purity Polished Copper Plate

Copper products exhibit good electrical conductivity as well as thermal conductivity. They are also ductile, resistant to corrosion, and have high wear resistance. They are widely used by the electricity, electronics and energy industries.

High Purity Germanium Sulfide GeS2 Powder CAS 12025-34-2, 99.99%

Germanium Sulfide (GeS2) is a semiconductor compound with the chemical Formula GeS2. It has a high solubility level in water. It's also easily soluble when heated alkali is used.Particle size : 100mesh
Purity: 99.99%

Metal Alloy 18g/cm3 High Density Tungsten Alloy Ball

W-Ni - Cu alloy is used in the production of Tungsten alloy balls. It is widely utilized in the fields of aviation, oil drilling, and aerospace.