By lql | 07 February 2023 | 0 Comments
What kinds of release agents are there?
What is Concrete release agent?
Concrete release agent refers to a substance applied to the formwork for construction before concrete pouring so that the formwork will not stick to the concrete surface after pouring, and it is not easy to dismantle the formwork or affect the smoothness of the concrete surface. Its main function is to form a film on the surface of formwork and concrete to separate them, so it is also called an isolation agent.
Concrete release agent refers to a substance applied to the formwork for construction before concrete pouring so that the formwork will not stick to the concrete surface after pouring, and it is not easy to dismantle the formwork or affect the smoothness of the concrete surface. Its main function is to form a film on the surface of formwork and concrete to separate them, so it is also called an isolation agent.
In view of the problems that concrete products and templates in the construction industry are easy to rust, there are bubbles on the concrete surface, the concrete surface is easy to pollute, and it is difficult to remove the mold, it is recommended to use an efficient concrete release agent, which is made of water-based polymer film-forming substances as the main agent and a variety of active additives through scientific processing technology. The product is stable and superior in performance, and it is a high-performance concrete demolding material necessary for creating high-quality projects.
Classifications of Concrete release agent
At present, there are many kinds of release agents for commercial concrete at home and abroad, and different types of release agents have different release effects between concrete and formwork. The main division method of release agents in the industry is mainly based on the raw materials of products. There are mainly pure oil release agents, emulsified oil release agents, saponified oil release agents, paraffin release agents, chemically active release agents, and other release agents.
1.Pure oil release agent
The main components of this release agent include mineral oil, animal oil, vegetable oil, and a mixture of various oils. The main components of this kind of release agent include mineral oil, animal oil, vegetable oil, and a mixture of various oils. But at present, most of them use mineral oil, that is, lubricating oil, mechanical oil, waste engine oil, and so on, with low viscosity and good fluidity in petroleum industry products. Pure oil release agent has good isolation and lubrication performance and easy demoulding and plays a certain role in rust protection for steel formwork or reinforced concrete formwork, so it is a satisfactory product. Its fly in the ointment is that it will pollute the concrete surface and affect the subsequent decoration; The interaction between oil and alkali in concrete leads to the pulverization of the concrete surface. Special attention should be paid to the fact that waste engine oil may contain sulfuric acid harmful to formwork and concrete and polychlorinated biphenyls harmful to human health, so it should be used with extra caution.
2. Emulsified oil release agent
It is also known as an emulsion release agent. It can be divided into two types: water-in-oil emulsion (W/O) and oil-in-water emulsion (O/W). The water-in-oil emulsion is made by suspending water in the oil phase by emulsification technology, which is widely used in molds or wood molds with wet surfaces. When used in steel molds, rust inhibitors must be added to reduce color defects and pits. An oil-in-water emulsion is made by dispersing oil in a continuous water phase. Usually, oil is used as raw material and emulsified to obtain an oil-in-water emulsion release agent. This kind of demoulding agent has a good demoulding effect, a simple preparation process, low cost, almost no pollution to concrete, and is suitable for steel, wood molds, and other templates, so it is widely used in China.
3. Saponified oil release agent
This kind of release agent is often used in wood formwork. Its main component is an emulsion formed by saponification of oils (such as mineral oil and animal and vegetable oil) with alkali, and soap emulsion can also be used. Its demoulding function is mainly to use saponification emulsion to lubricate and isolate between concrete and wood mold. Soap mold release agent has the advantages of easily available raw materials, low production cost, simple preparation process, and convenient operation, and is suitable for wood molds, floor molds, and the like.
4. Paraffin release agent
It is mainly emulsion paraffin release agent in China. Solvent-based paraffin release agent has very high requirements for the production qualification and production safety control of enterprises, and the use effect of solvent-based release agent can be replaced by much oily spittle I, so few manufacturers are doing it.
5. Other mold release agents mainly include electric mold release, plastic spraying film, and rubber coating, but these products are expensive and difficult to be popularized and apply in engineering.
Principle of Concrete release agent
(1) Physical lubrication: the release agent plays a lubricating role between the formwork and the concrete, weakening the affinity between them, thus playing a molding role.
(2) Film-forming isolation: the release agent is coated on the surface of the template to form a film, and the film plays an isolation role in releasing the mold.
(3) Chemical action: The release agent reacts with some minerals or ions in fresh concrete to generate substances with an isolation function, thus playing a role in demoulding.
Price of Concrete release agent
Concrete release agent particle size and purity will affect the product's price, and the purchase volume can also affect the cost of Concrete release agent. A large amount of large amount will be lower. The price of Concrete release agent can be found on our company's official website.
Concrete release agent supplier
Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) Luoyang City, Henan Province, China, is a reliable and high-quality global chemical material supplier and manufacturer. It has more than 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including Concrete release agent, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective Concrete release agent, you are welcome to contact us or inquire any time.
Classifications of Concrete release agent
At present, there are many kinds of release agents for commercial concrete at home and abroad, and different types of release agents have different release effects between concrete and formwork. The main division method of release agents in the industry is mainly based on the raw materials of products. There are mainly pure oil release agents, emulsified oil release agents, saponified oil release agents, paraffin release agents, chemically active release agents, and other release agents.
1.Pure oil release agent
The main components of this release agent include mineral oil, animal oil, vegetable oil, and a mixture of various oils. The main components of this kind of release agent include mineral oil, animal oil, vegetable oil, and a mixture of various oils. But at present, most of them use mineral oil, that is, lubricating oil, mechanical oil, waste engine oil, and so on, with low viscosity and good fluidity in petroleum industry products. Pure oil release agent has good isolation and lubrication performance and easy demoulding and plays a certain role in rust protection for steel formwork or reinforced concrete formwork, so it is a satisfactory product. Its fly in the ointment is that it will pollute the concrete surface and affect the subsequent decoration; The interaction between oil and alkali in concrete leads to the pulverization of the concrete surface. Special attention should be paid to the fact that waste engine oil may contain sulfuric acid harmful to formwork and concrete and polychlorinated biphenyls harmful to human health, so it should be used with extra caution.
2. Emulsified oil release agent
It is also known as an emulsion release agent. It can be divided into two types: water-in-oil emulsion (W/O) and oil-in-water emulsion (O/W). The water-in-oil emulsion is made by suspending water in the oil phase by emulsification technology, which is widely used in molds or wood molds with wet surfaces. When used in steel molds, rust inhibitors must be added to reduce color defects and pits. An oil-in-water emulsion is made by dispersing oil in a continuous water phase. Usually, oil is used as raw material and emulsified to obtain an oil-in-water emulsion release agent. This kind of demoulding agent has a good demoulding effect, a simple preparation process, low cost, almost no pollution to concrete, and is suitable for steel, wood molds, and other templates, so it is widely used in China.
3. Saponified oil release agent
This kind of release agent is often used in wood formwork. Its main component is an emulsion formed by saponification of oils (such as mineral oil and animal and vegetable oil) with alkali, and soap emulsion can also be used. Its demoulding function is mainly to use saponification emulsion to lubricate and isolate between concrete and wood mold. Soap mold release agent has the advantages of easily available raw materials, low production cost, simple preparation process, and convenient operation, and is suitable for wood molds, floor molds, and the like.
4. Paraffin release agent
It is mainly emulsion paraffin release agent in China. Solvent-based paraffin release agent has very high requirements for the production qualification and production safety control of enterprises, and the use effect of solvent-based release agent can be replaced by much oily spittle I, so few manufacturers are doing it.
5. Other mold release agents mainly include electric mold release, plastic spraying film, and rubber coating, but these products are expensive and difficult to be popularized and apply in engineering.
Principle of Concrete release agent
(1) Physical lubrication: the release agent plays a lubricating role between the formwork and the concrete, weakening the affinity between them, thus playing a molding role.
(2) Film-forming isolation: the release agent is coated on the surface of the template to form a film, and the film plays an isolation role in releasing the mold.
(3) Chemical action: The release agent reacts with some minerals or ions in fresh concrete to generate substances with an isolation function, thus playing a role in demoulding.
Price of Concrete release agent
Concrete release agent particle size and purity will affect the product's price, and the purchase volume can also affect the cost of Concrete release agent. A large amount of large amount will be lower. The price of Concrete release agent can be found on our company's official website.
Concrete release agent supplier
Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) Luoyang City, Henan Province, China, is a reliable and high-quality global chemical material supplier and manufacturer. It has more than 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including Concrete release agent, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective Concrete release agent, you are welcome to contact us or inquire any time.
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