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A kind of high surface quality polypropylene microfoam composite material and its preparation method

A composite material and polypropylene technology, applied in the field of polypropylene micro-foaming, can solve the problems of poor foaming quality and surface quality of polypropylene foaming materials, restrictions on the expansion and application of polypropylene foaming materials, air pockets and silver streaks, etc. , to achieve the effects of improving comprehensive resistance, reducing migration and diffusion, and improving surface quality

Active Publication Date: 2021-08-31
KANGMINGYUAN GUIZHOU SCI & TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned existing polypropylene foam materials, the gas is easy to migrate and diffuse to the polymer surface during the mold filling process, so that the foam quality of the polypropylene foam materials and the surface quality of the product are not good, and air pockets and silver streaks often appear. Surface defects, thereby limiting the expanded application of polypropylene foam materials, the invention provides a high surface quality polypropylene micro-foam composite material and its preparation method

Method used

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  • A kind of high surface quality polypropylene microfoam composite material and its preparation method
  • A kind of high surface quality polypropylene microfoam composite material and its preparation method
  • A kind of high surface quality polypropylene microfoam composite material and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 45.3 parts of copolymerized polypropylene resin, 20 parts of homopolypropylene resin, 12 parts of toughening agent, 20 parts of filler, 0.1 part of gas adsorbent, 0.1 part of gas barrier agent, 0.05 part of nucleating agent, main antioxidant 1010 0.7 0.7 parts, 168 parts of auxiliary antioxidant, 0.55 parts of anti-scratch agent, 0.5 parts of light stabilizer were put into a high-speed mixer and mixed for 3-5 minutes. , extrusion granulation. The extruder barrel temperature was set at 160-210°C.

[0036] Mix 96 parts of the prepared modified polypropylene composite material with 4 parts of the chemical foaming agent masterbatch and then add it to the injection molding machine, adopt the injection molding process to obtain the polypropylene micro-foaming composite material, and the injection molding temperature of the injection molding machine is set to 170-210°C. The performance test results of the obtained polypropylene microfoam composite material are compared in Ta...

Embodiment 2

[0038] 45 parts of copolymerized polypropylene resin, 20 parts of homopolypropylene resin, 12 parts of toughening agent, 20 parts of filler, 0.2 part of gas adsorbent, 0.3 part of gas barrier agent, 0.05 part of nucleating agent, main antioxidant 1010 0.7 0.7 parts, 168 parts of auxiliary antioxidant, 0.55 parts of anti-scratch agent, 0.5 parts of light stabilizer were put into a high-speed mixer and mixed for 3-5 minutes. , extrusion granulation. The extruder barrel temperature was set at 160-210°C.

[0039] 96 parts of the prepared modified polypropylene composite material and 4 parts of chemical foaming agent masterbatch were evenly mixed and then added to an injection molding machine, and the injection molding process was adopted to obtain a polypropylene micro-foamed composite material. The injection temperature of the injection molding machine is set at 170-210°C. The performance test results of the obtained polypropylene microfoam composite material are compared in Ta...

Embodiment 3

[0041] 44.5 parts of copolymerized polypropylene resin, 20 parts of homopolymerized polypropylene resin, 12 parts of toughening agent, 20 parts of filler, 0.4 part of gas adsorbent, 0.6 part of gas barrier agent, 0.05 part of nucleating agent, and main antioxidant 1010 0.7 0.7 parts, 168 parts of auxiliary antioxidant, 0.55 parts of anti-scratch agent, 0.5 parts of light stabilizer were put into a high-speed mixer and mixed for 3-5 minutes. , extrusion granulation. The extruder barrel temperature was set at 160-210°C.

[0042]Mix 96 parts of the prepared modified polypropylene composite material with 4 parts of the chemical foaming agent masterbatch and then add it to the injection molding machine, adopt the injection molding process to obtain the polypropylene micro-foaming composite material, and the injection molding temperature of the injection molding machine is set to 170-210°C. The performance test results of the obtained polypropylene microfoam composite material are...

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Abstract

The high surface quality polypropylene micro-foaming composite material of the present invention comprises the following components in parts by weight: 10-60 parts of copolymerized polypropylene resin, 10-50 parts of homo-polypropylene resin, and 0-30 parts of toughening agent parts, 0 to 30 parts of filler, 0.01 to 10 parts of gas adsorbent, 0.01 to 10 parts of gas barrier agent, 0.05 to 5 parts of foaming agent, and 0 to 4 parts of nucleating agent. Control the dissolution, diffusion and migration of gas in the polymer melt, thereby reducing the migration and diffusion of gas to the surface of the polymer, while ensuring the physical properties of the composite material and the amount of internal foaming, it solves the problem of the surface gas of polypropylene foam products. surface defects such as holes, silver streaks, etc., thus greatly improving the surface quality of the product. At the same time, the present invention also provides a special preparation method for preparing the above components into polypropylene micro-foamed parts with high surface quality .

Description

technical field [0001] The invention relates to the technical field of polypropylene micro-foaming, in particular to a polypropylene micro-foaming composite material with high surface quality and a preparation method thereof. Background technique [0002] Polypropylene foaming material uses propylene as the main raw material, and adopts physical foaming technology to make foamed beads, which are mainly used for mold foaming into various shapes and sizes for use in different occasions; polypropylene Foamed materials have the characteristics of light weight, environmental protection, good dimensional stability, heat and sound insulation, and excellent mechanical properties, so they are widely used in the fields of automobiles, aerospace, home appliances, and packaging. [0003] At present, the existing polypropylene foam material is easy to migrate and diffuse to the surface of the polymer during the mold filling process, which makes the foaming quality of the polypropylene fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/14C08L23/12C08L23/08C08L31/04C08K13/02C08K3/34C08K5/20C08K5/134C08K5/526C08J9/06C08J9/10C08J9/08
CPCC08J9/0023C08J9/0028C08J9/0061C08J9/0066C08J9/0095C08J9/06C08J9/08C08J9/10C08J2203/02C08J2203/04C08J2323/14C08J2423/08C08J2423/12C08J2431/04C08K3/34C08K5/1345C08K5/20C08K5/526C08K13/02
Inventor 李胜男蒋团辉曾祥补沈超朱能贵王醴均何力龚维张纯
Owner KANGMINGYUAN GUIZHOU SCI & TECH DEV CO LTD
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