Do you know the flameout principle of flame retardant?
What is the flame retardant flameout principle? 1, produce a gas that can smother the flame. Such as antimony trioxide, it encounters HCL due to combustion in PVC 2, absorb the heat generated during combustion,
flame retardantWhat is the principle of flameout?
1. Produce a gas that can smoothen the flame. Such as antimony trioxide, it encounters HCL in PVC due to combustion
2. Absorb the heat generated during combustion and play the role of cooling and slowing down the combustion rate. Such as aluminum hydroxide, the proportion of chemically associated water contained in its molecules is as high as 34%. This associated water remains stable at the processing temperature of most plastics, but it begins to decompose when it exceeds 200°C, releasing water vapor. And each decomposition of a gram of aluminum hydroxide, to absorb 36 kilocalories of heat.
3. Provide a layer of oxygen barrier coating. For example, the phosphorus compound generated when the phosphate flame retardant is burned is an oxygen barrier coating.
4. Generate free radicals that can react with plastics and play a flame retardant role. The combustion properties of their reaction products with plastics are extremely poor.
According to the different methods of use, flame retardants can be divided into additive type and reactive type. The additive flame retardant acts as a flame retardant mainly by adding a flame retardant to a combustible material. Reactive flame retardant is the introduction of flame retardant groups in polymer materials through chemical reactions, thereby improving the flame resistance of the material, and preventing the material from being ignited and inhibiting the spread of flame. Among the types of flame retardants, additive flame retardants dominate, and the range of use is relatively wide, accounting for about 85% of flame retardants, and reactive flame retardants account for only 15%.
Real-time information
Zhongke Flame Retardant Organization Watches 20 Closing Ceremonies
On the morning of October 22, 2022, members of Zhongke Flame Retardant New Materials Co., Ltd. watched the closing ceremony of the 20th Congress under the leadership of General Manager Wang Ligui.
Everyone knows that there are two common flame retardants. Today we are going to talk about only one of them. Aluminum hydroxide flame retardant is an environmentally friendly halogen-free flame retardant, which can be widely used in fabrics, wood, plastics, and rubber., Polyurethane and other industries have ideal flame retardant effect. In the process of industrial application, it is found that flame retardant failure occurs when aluminum hydroxide flame retardant is added. The following are the reasons for the failure of aluminum hydroxide flame retardant, how to prevent it, how to deal with the operation, and restore the original function.
As a flame retardant, magnesium hydroxide also need to improve what aspects?
When it comes to flame retardants, everyone is familiar with them. Although we usually have less contact with them, we can know what they are used for from the name. Have to talk about magnesium hydroxide, we all know that its main presentation state is a granular, at present, the market sales of magnesium hydroxide particle size is larger, part of the commodity particle size up to tens of microns, immediately used as a flame retardant, poor dispersion, the physical properties of raw materials greater harm. In industrial production, physical grinding methods are generally used to reduce the particle size to 1 micron. The surface of magnesium hydroxide has high polarity and is easy to agglomerate. As the compatibility of refractory materials and polymer substrates, it not only reduces its flame retardant grade, but also causes more serious harm to the physical properties of raw materials.
Hefei Zhongke Flame Retardant New Material Co., Ltd
Sales Department Telephone:15905609730
Ministry of Foreign Trade Telephone:13956052398
Comprehensive department Telephone:0551-67712199
Company headquarters address: Hefei Feidong Economic Development Zone Xianghe Road 36
E-mail:hefei@zkxcl.com
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