In the past, human beings severely damaged the natural environment and did not realize the importance of environmental protection. Now people's awareness of environmental protection has gradually increased. They pay attention to environmental protection in their daily lives and production activities. Protecting the environment has become our most important thing. In some chemical industries, in order to enable their enterprises to achieve long-term development, they have changed their production methods and continuously developed new environmentally friendly products. Dole Chemical Co., Ltd. in Dongguan is a professional research and development, production and sales New environmentally friendly flame retardant products. The newly developed bellows flame retardant by Daoer Chemical is an environmentally friendly flame retardant without halogen flame retardants.

The traditional method of modifying the bellows flame retardant is to add halogen-containing flame retardants (such as decabromodiphenyl ether, hexabromocyclododecane, octabromo ether, etc.). Halogen corrugated pipe flame retardants will release smoke and corrosive gases that pollute the environment and endanger human health while the combustion is effective. These corrosive gases will damage buildings and equipment even more than the fire itself. What ’s more serious is that When certain brominated flame retardants are burned or thermally cracked, toxic carcinogens, polybrominated dibenzodioxane and polybrominated dibenzofuran, are formed. Therefore, many flame retardant users are cautious or even unwelcome towards halogen flame retardants, and are actively committed to the development of halogen-free flame retardants, especially in the electronics and electrical industry. Corrugated tube flame retardant has become a hot spot in research and development in recent years.

Halogen-free flame retardants include metal hydroxides, phosphorus-based flame retardants, and silicone-based flame retardants. Metal hydroxide has the advantages of non-toxicity, non-corrosion, and no toxic gas generation, so it is called a green environmentally friendly flame retardant, but its addition amount is usually more than 50% to achieve a good flame retardant effect, and high filling The amount will seriously affect the physical and mechanical properties of the material; phosphorus-based flame retardants are mainly used in oxygen-containing polymers, and the red phosphorus in phosphorus-based flame retardants is not suitable for products with higher color requirements because of its heavier color. Therefore, there are greater limitations; silicone-based flame retardants have not been widely used due to their high price. Therefore, the development of new halogen-free corrugated pipe flame retardant systems has become a major issue in the field of flame retardant.

In recent years, more research has been done on intumescent flame retardants. It is a composite flame retardant based on PVC as the main core component and can be used in a variety of flammable polymers. When the polymer with the intumescent flame retardant is burned, a uniform carbonaceous foam layer is formed on the surface. This carbon layer can play the role of heat insulation, oxygen barrier, smoke suppression and anti-melt drip in the condensed phase. Halogen-free, low-smoke, low-toxicity, non-corrosive gas, which has less influence on the mechanical properties and processing properties of PP, basically overcomes the shortcomings of traditional flame retardant technology, and has attracted the attention of experts at home and abroad. It is also recognized as one of the promising ways to achieve halogen-free flame retardants.