It is better to choose the flame retardant according to which flame retardant mechanism is suitable for the nature of the flame retardant. 1. Endothermic mechanism: some flame retardants will decompose to generate water when heated, and the water will evaporate and take away a lot of heat, so as to achieve resistance to heat. This kind of common flame retardants include borax, hydrated alumina, etc.; 2. Covering effect; some flame retardants will decompose to form a stable coating when heated, making the material and the oxygen isolation,
Product name: Antimony trioxide; Product description: Antimony flame retardant is one of the most important inorganic flame retardants, which can greatly improve the efficiency of halogen flame retardants. The main varieties of antimony flame retardants are antimony trioxide (ATO), colloidal antimony pentoxide and sodium antimonate. One of the most important is ATO, which is an indispensable synergist for almost all halogenated flame retardants. Product details:
Today, the use of flame retardants to reduce the incidence of fire has slowly become the key to people's fire prevention. With the increasing awareness of people's environmental protection, safety and health, the environmental protection requirements for flame retardants are also getting higher and higher. In the future, countries around the world will take environmentally friendly flame retardants as the focus of research, development and application. Supervision of safe use of fuels. So what are the requirements that need to be met when using flame retardants?
The synergistic flame retardant adopts composite products such as silicon and tin, which has synergistic flame retardant and auxiliary anti-drip effects, and the appearance is white powder. The application of the product in the antimony halogen flame retardant system can effectively replace part of the amount of antimony trioxide, improve the oxygen index of the material, and the overall performance of the polymer after the replacement can be kept intact, which is beneficial to improve the burning test of the material. The product has passed the EU ROHS/REACH certification. Does not contain heavy metals.
Alumina trihydrate (ATH) is an acidic, halogen-free flame retardant for a variety of plastics. Both compounds can be decomposed under endothermic conditions according to the following reaction formula: 2Al(OH)3 ---> Al2O3 + 3H2O; the gaseous water phase is believed to cover the flame and thus exclude oxygen, And dilute flammable gases. Similar to the function of phosphorus-containing flame retardants to form coke, an insulating substance is formed on the surface of the material in contact with the flame,
In order to improve its dispersion performance and flame retardant effect, magnesium hydroxide can be better used in the flame retardant of plastics and other composites. As a flame retardant, magnesium hydroxide has special requirements, such as small surface area, not easy to form agglomeration, and high Molecular materials have good compatibility and easy dispersion. Correspondingly, for the production of magnesium hydroxide flame retardant, it is necessary to adopt a different preparation technology from ordinary magnesium hydroxide. In normal temperature synthesis, the bases used are different. There are 3 methods:
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