A high-gloss, precipitation-resistant, flame-retardant polypropylene material and its preparation method

Abstract

The invention discloses flame-retardant masterbatch suitable for a flame-retardant polypropylene material, a preparation method of the flame-retardant masterbatch and a high-gloss anti-precipitation flame-retardant polypropylene material based on flame-retardant masterbatch preparation. Tetrabromobisphenol S bis-(2,3-dibromopropyl) ether masterbatch is adopted as the flame-retardant masterbatch and prepared by taking micropore polypropylene as an adsorbing agent and a masterbatch carrier through a fusing adsorption method. Flame-retardant polypropylene based on flame-retardant masterbatch preparation is prepared from 57%-70% of polypropylene resin, 24%-40% of the tetrabromobisphenol S bis-(2,3-dibromopropyl) ether masterbatch and 3%-6% of antimonous oxide masterbatch. The high-gloss anti-precipitation flame-retardant polypropylene material prepared through the method has the advantages of being high in gloss, easy to mold and disperse, capable of resisting precipitation, low in cost, high in flame-retardant efficiency and the like and can be widely applied to shells of electrons, electric appliances and the like.

Description

technical field [0001] The present invention relates to the field of thermoplastic polyolefins, more specifically flame retardant masterbatches suitable for polypropylene and flame retardant polypropylene prepared based on the flame retardant masterbatches. The flame retardant polypropylene has high gloss, precipitation resistance and easy molding , easy to disperse, low cost, high flame retardant efficiency, etc., can be widely used in the shell of electronics and electrical appliances. Background technique [0002] Polypropylene (PP) plastic is widely used in electronics, toys and automobiles due to its advantages of easy processing, non-toxic and tasteless products, low density, low price, and good chemical stability. However, polypropylene has a low oxygen index and is flammable. There are certain hidden dangers in fire resistance. In order to further expand its application field, it needs to be modified by flame retardancy. Common flame retardant modifications include ...

AI Technical Summary

Problems solved by technology

However, most of the reported technologies are to mix flame retardants, flame retardant synergists, carriers and other additives together, melt extrusion granulation or mixing extrusion granulation, this process has the following disadvantages : ① There is still dust in the high-speed mixing process; ② When the flame retardant or filler powder after high-speed mixing is directly granulated through a twin-screw extruder, it is difficult to discharge the powder due to the high content of the powder. Will cause greater wear to the barrel and screw

[0004] In addition, if the amount of flame retardant or flame retardant masterbatch is high, it is easy to cause defects such as low surface gloss of plastic products and poor mechanical properties of materials.

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