Flame Retardant Manufacturer: Analysis of Flame Retardant Mechanism of Vehicle Ashtray
Car ashtrays need to be filled with solid materials and high-density flame retardant materials. Opening and closing the cover has the characteristics of low sound, uniform force, steel elastic elements, etc. How is the flame retardant for car ashtrays made flame retardant?
Car ashtrays need to be filled with solid materials, high-density flame-retardant materials; opening and closing the cover with low sound, uniform force, steel elastic components and other characteristics, car ashtraysflame retardantHow to do flame retardant?
Coating function: After the flame retardant is heated, it melts on the surface of the fiber material to form a glass-like coating, which becomes a barrier between the condensed phase and the flame. This can not only isolate oxygen, prevent the diffusion of flammable gases, but also block heat conduction and heat radiation, reduce the heat feedback to the fiber material, thereby inhibiting thermal cracking and combustion reactions.
Gas dilution: flame retardant endothermic decomposition after the release of incombustible gases, such as nitrogen, carbon dioxide, ammonia, sulfur dioxide, etc., these gases dilute the combustible gas, or the combustion process of insufficient oxygen. In addition, the non-combustible gas also has a cooling effect.
Endothermic effect: Some flame retardants with high heat capacity undergo endothermic decomposition reactions such as phase change, dehydration or dehydrohalogenation at high temperatures, which reduce the temperature of the surface of the fiber material and the flame zone, slow down the rate of thermal cracking reaction, and inhibit the generation of flammable gases. For example, three molecules of water can be released when alumina trihydrate is decomposed, and a large amount of dewatering water is required to be converted into a gas phase.
Melting droplet effect: Under the action of the flame retardant, the fiber material is depolymerized, the melting temperature is reduced, and the temperature difference between the melting point and the ignition point is increased, so that the fiber material softens, shrinks, and melts before cracking, and becomes a molten droplet. Most of the heat is taken away, which interrupts the process of heat feedback to the fiber material, and finally interrupts the combustion and makes the flame self-extinguish. The flame retardancy of polyester fibers is mostly achieved in this way.
The introduction of aromatic rings or aromatic heterocycles in the fiber macromolecules increases the density and cohesion between the macromolecular chains and improves the heat resistance of the fiber; or by crosslinking and cyclization of the macromolecular chains and forming complexes with metal ions to change the molecular structure of the fiber, improve the degree of carbonization, inhibit thermal cracking, and reduce the generation of flammable gases.
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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