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A kind of modified polypropylene material for low-voc low-gloss low-shrinkage automotive interior and preparation method thereof

A polypropylene material and automotive interior technology, applied in the field of automotive interior parts, can solve the problems of large differences in glossiness of plastic parts, increase of VOC content in the car, frequent maintenance of molds, etc., to create a low-gloss environment, Excellent mechanical properties and processing properties, the effect of reducing visual fatigue

Active Publication Date: 2022-06-07
KINGFA SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sandblasting requires frequent maintenance of molds. Once the maintenance is not good, it will lead to large differences in gloss between batches of plastic parts; while spraying paint will cause environmental pollution and increase VOC content in the car

Method used

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  • A kind of modified polypropylene material for low-voc low-gloss low-shrinkage automotive interior and preparation method thereof
  • A kind of modified polypropylene material for low-voc low-gloss low-shrinkage automotive interior and preparation method thereof
  • A kind of modified polypropylene material for low-voc low-gloss low-shrinkage automotive interior and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-15

[0047] The index steps of each embodiment are as follows:

[0048] Put PP resin, POE resin, talc, matting agent, adsorbent, and other additives (including main antioxidant, auxiliary antioxidant, light stabilizer, lubricant, carbon black) in a high-speed mixer, at 1400± Stir for 4±1min at a speed of 50r / min, and mix evenly; then add the obtained premix into a co-rotating twin-screw extruder, melt, knead, extrude and granulate to obtain low-VOC, low-gloss, and low-shrinkage automotive interior trim With polypropylene material. The extrusion temperature is 200±10℃, the extruder main engine speed is 500±10r / min, and the feeding is 800kg / h.

[0049] The formula of each component in Examples 1-15 is shown in Table 1-3, and the performance index is shown in Table 5.

[0050] The formula of each component of Comparative Example 1-5 is shown in Table 4, the preparation method is the same as that of Example 1-15, and the performance index is shown in Table 4.

[0051] Table 1 The di...

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Abstract

The invention relates to a low-VOC, low-gloss, low-shrinkage polypropylene material for automobile interior decoration and a preparation method thereof. The material comprises the following components in parts by weight: 40-80 parts of polypropylene resin, 10-20 parts of POE resin, matting 1-4 parts of agent, 20-40 parts of talcum powder, 1-3.5 parts of adsorbent, and 2 parts of other additives. The matting agent of the present invention adopts the method of adding inorganic matting agent to reduce the glossiness, adds the VOC in the inorganic magnesium silicate molecular sieve adsorption material to the formula, and adopts the talcum powder of high mesh number to quickly reduce the shrinkage rate of the material, and the prepared The obtained modified polypropylene material for automobile interior decoration has the characteristics of low VOC content, low gloss, low shrinkage rate, etc., and the product has excellent mechanical properties and processing properties.

Description

technical field [0001] The invention relates to a low-VOC, low-gloss and low-shrinkage polypropylene material for automobile interior and a preparation method thereof, belonging to the technical field of automobile interior parts. Background technique [0002] Automotive interior materials are generally divided into two types: hard interiors and slush interiors. Hard interiors have the advantages of low cost, simple molding process, and convenient recycling. They have gradually replaced slush-plastic interiors and become the mainstream in today's automobile R&D and design. [0003] Modified polypropylene material, as the main hard interior material, occupies the main position of the hard interior material. [0004] Polypropylene resin has low density, good heat resistance, high strength, high hardness, high gloss, good insulation, high molding shrinkage and low cost, but its heat resistance is poor, light aging resistance is poor, shrinkage is large, gloss High temperature...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/14C08L23/08C08K3/34C08K7/26C08K3/36C08K13/04
CPCC08L23/14C08L2205/02C08K2201/003C08L23/0815C08K3/34C08K7/26C08K3/36C08K13/04
Inventor 马金成黄险波叶南飚张宇袁强吴志强
Owner KINGFA SCI & TECH CO LTD
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