A kind of modified pp material and its preparation method and application

Abstract

The invention provides a modified PP material and its preparation method and application, which is made of raw materials including the following parts by weight: PP resin: 40.2-57.2 parts; flame retardant: 12-20 parts; flame retardant synergist: 5‑10 parts; talcum powder: 20 parts; smoke suppressant: 3‑5 parts; physical adsorbent: 1‑2 parts; chemical deodorant: 1‑2 parts; antioxidant: 0.4 parts; lubricant : 0.4 part, wherein, the preparation method of the chemical type adsorbent is: immersing the activated carbon with a pore size of 100-500um in a concentration of 1-2mol / L silver nitrate solution, leaving it to stand for 48-48-48 in a 50-70°C environment After 72 hours, the silver nitrate solution is fully immersed in the pores of the activated carbon. The modified PP material of the invention has the characteristics of low smoke density, low odor, low VOC, low shrinkage and flame retardancy.

Description

Technical field [0001] The present invention belongs to the field of polymer materials, in particular to a modified PP material and preparation method and application thereof. Background [0002] PP (polypropylene) as one of the five general plastics, due to its light weight, corrosion resistance, low price and other advantages, is widely used in home appliances, automobiles, construction industry, bathroom and other fields, but PP is flammable, large heat discharge and accompanied by droplets, seriously limiting its scope of application. Traditional flame retardant modified PP materials need to add a large number of flame retardants, flame retardants usually include brominated flame retardants, expansion flame retardants, phosphorus and nitrogen bromine composite flame retardants, these flame retardants in the extruder processing granulation process will produce bromide, sulfide, nitride and other small molecular substances, so most of the flame retardant modified PP materials h...

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Problems solved by technology

[0003] Chinese patent CN211493052 U discloses a flame-retardant PP building formwork. This flame-retardant PP building formwork has low shrinkage and stable flame-retardant performance, but the material has a large odor, high VOC content, and high smoke density when flame-retardant.

Chinese patent CN105440443 A discloses a halogen-free flame-retardant PP material filled with calcium carbonate. This flame-retardant PP material has low smoke density, but the material itself has a large odor, high VOC content, and large shrinkage rate.

Chinese patent CN 106543562 A discloses a kind of nitrogen-containing silicon boron halogen-free flame retardant and DOPO synergistic flame-retardant PP / EVA composite material. This flame-retardant PP / EVA composite material has low smoke density, but the material itself has a large odor and VOC High content and large shrinkage

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