Physical index of catalyst organic bismuth DY-20

2021-11-26   Pageview:73

Catalyst organic bismuth DY-20
Appearance: light yellow to yellow transparent liquid
Sharp content: 20±0.5%
Relative density: 1.15

 

 

 

 

 

 

 

 

 

 

 

The addition of inorganic flame retardants is less effective in burning, and the addition is large, which has a greater impact on the physical and mechanical properties of the product. Therefore, the application research of new technologies in flame retardants is gradually going deep and has practical significance.

From the perspective of the development trend of flame retardants, non-halogenated flame retardants, inorganic flame retardants, fillers, and smoke suppressants are ultra-fine, flame retardant, low-smoke, and surface deterioration are the flame retardant industry and chemical industry. ptfe modified pe wax price Topics that families should focus on. Red phosphorus is a halogen-free and effective flame retardant, its flame retardant effect is remarkable, it does not produce dense smoke and poisonous gas when burned, it has no pollution to the environment, and basically has no effect on the physical and mechanical properties of flame retardant products. Because it is flammable during friction and collision, red phosphorus coating technology has also become a research hotspot at home and abroad. The so-called red phosphorus coating means that the red phosphorus particles are coated with a film to make them into capsules. This kind of capsule will not break under processing temperature and pressure, but when it catches fire, the film can melt and decompose immediately to release the flame retardant to achieve the purpose of flame retardancy. In recent years, red phosphorus coating research mainly uses cross-linked polymers or metal oxides.

Towards a trend towards smoke suppression and non-toxicity
Personal injury and death accidents caused by fire are mainly caused by the following factors: firstly, the effect of heat, which burns people to death; secondly, burning materials release a large amount of smoke, especially toxic substances such as CO, HCN, etc., which make people poisoned, suffocated and died: Third, the burning smoke makes people lose the ability to escape. In recent years, due to the large-scale application of polymer materials, the second and third factors have risen to be the main factors causing fires.

In addition, the widely used flame retardants of chlorine-containing compounds and phosphorus-containing compounds, although they have good flame retardant effects, they do not have the effect of suppressing smoke, and some even increase the amount of smoke. From a global perspective, it is early In the 1970s, the smoky properties of polymer materials and their toxicity to the human body aroused people’s attention. In the field of flame retardant technology research, a lot of research work has been devoted to the development of flame retardant additives with excellent smoke suppression and flame retardant effects. Therefore, the research of flame retardants has begun to consider their smoke properties. In addition to the non-toxicity of the material itself, it should not produce dense smoke, poisonous gas and no pollution to the environment when burned. The smoke properties of inorganic flame retardants are often better than organic flame retardants.

The flame retardant is small, and most of the flame retardants with smoke suppression effect are inorganic compounds. Inorganic flame retardants have the advantages of good thermal stability, low toxicity or non-toxicity, no corrosive gas, no turbidity, no precipitation during storage, long-lasting burning resistance, long-lasting flame retardant effects, etc., and the source of raw materials is abundant. The price is low.

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