Modified PP material, preparation method and application thereof

Abstract

The invention provides a modified PP material, a preparation method and application thereof. The modified PP material is prepared from the following raw materials in parts by weight: 40.2-57.2 parts of PP resin; 12-20 parts of a flame retardant; 5-10 parts of a flame retardant synergist; 20 parts of talcum powder; 3-5 parts of a smoke suppressant; 1-2 parts of a physical adsorbent; 1-2 parts of achemical deodorant; 0.4 part of an antioxidant; and 0.4 part of a lubricant, wherein the preparation method of the chemical adsorbent comprises the following steps: soaking the activated carbon with the pore diameter of 100-500 microns in a silver nitrate solution with the concentration of 1-2 mol / L, and standing for 48-72 hours at the temperature of 50-70 DEG C so as to completely soak the silvernitrate solution into the pores of the activated carbon to obtain the chemical adsorbent. The modified PP material provided by the invention has the characteristics of low smoke density, low odor, low VOC, low shrinkage and flame retardance.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a modified PP material and its preparation method and application. Background technique [0002] As one of the five general-purpose plastics, PP (polypropylene) is widely used in household appliances, automobiles, construction industry, bathroom and home furnishing and other fields due to its advantages of light weight, corrosion resistance, and low price. Accompanied by molten droplets, it severely limits its scope of application. Traditional flame-retardant modified PP materials need to add a large amount of flame retardants. Flame retardants usually include brominated flame retardants, intumescent flame retardants, and phosphorus-nitrogen-bromine composite flame retardants. These flame retardants are processed in the extruder Small molecular substances such as bromide, sulfide, and nitride will be produced during the granulation process, so most flame-retardant mo...

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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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