Polypropylene anti-flaming foam material and preparation method thereof

Abstract

The invention relates to the technical field of polypropylene foam materials, in particular to a polypropylene anti-flaming foam material and a preparation method thereof. The polypropylene anti-flaming foam material is prepared from, by weight, 100 parts of polypropylene, 0.5-1.5 parts of foaming agent, 0.5-1.5 parts of nucleating agent, 3-6 parts of fire retardant, 0.5-1.5 parts of anti-flaming synergist and 1-2 parts of coupling agent. The fire retardant is formed by compounding magnesium hydroxide and tetrabromobisphenol A. The anti-flaming synergist is formed by compounding kieselguhr and antimonous oxide. The prepared polypropylene anti-flaming foam material is high in anti-flaming grade which can reach the grade V-0, the oxygen index reaches up to 39, the char yield reaches up to 35, processing fluidity is good, the char yield is high after burning, and no melted drop is generated. In conclusion, the prepared polypropylene anti-flaming foam material is high in shock strength, and the fire retardancy of the material is greatly enhanced while the mechanical performance of the material is improved. The preparation method has the advantages that the process is simple, and industrialization is easy.

Description

Technical field [0001] The invention relates to the technical field of polypropylene foam materials, in particular to a polypropylene flame-retardant foam material and a preparation method thereof. Background technique [0002] Polypropylene (PP material) is a kind of thermoplastic resin material made by polymerization of propylene. It is an important variety among the five general synthetic resins. PP is the lowest density among all synthetic resins, only 0.90~0.91g / cm3. Among the five general plastics, PP has excellent heat resistance, PP is a non-polar polymer, has good electrical insulation, and PP absorbs water Very low performance, electrical insulation will not be affected by humidity. In view of the high rigidity, excellent mechanical properties, good thermal and chemical stability of polypropylene, polypropylene is undoubtedly the material of choice for preparing foamed products. [0003] Although polypropylene foam products have good performance and application prospect...

AI Technical Summary

Problems solved by technology

[0003] Although polypropylene foam products have good performance and application prospects, the development of polypropylene foam is very difficult. At present, there is no relevant core technology that can be industrialized in China.

In addition, polypropylene is a flammable material, its oxygen index is only 17%-18.5%, and its carbonization rate is low, it is easy to spread flames and cause fires, and melt droplets are generated during combustion, so the modification of its flame retardant properties is a major problem