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A kind of spray-free scratch-resistant PP alloy material and its preparation method

An alloy material and scratch-resistant technology, applied in the field of composite materials, can solve the problem of unknown spray-free effect, achieve excellent scratch-resistant performance, avoid paint peeling, and reduce flow difference.

Active Publication Date: 2020-04-07
上海日之升科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent CN 103694564 B discloses "a PP / PMMA alloy material and its preparation method". By preparing PP / PMMA alloy, the scratch resistance, hardness and gloss of PP are improved, but the metal effect powder is added. There is no way to know the spray-free effect

Method used

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  • A kind of spray-free scratch-resistant PP alloy material and its preparation method
  • A kind of spray-free scratch-resistant PP alloy material and its preparation method
  • A kind of spray-free scratch-resistant PP alloy material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3

[0028] The present examples 1-3 relate to the spray-free scratch-resistant PP alloy material composition, and the components contained therein and their dosage are shown in Table 1. Among them, PP is homopolymerized PP with a melting index of 20g / 10min; the transparent ionic polymer is Surlyn8150; the compatibilizer is PP-g-MAH; the metal powder pigment is aluminum silver powder with a particle size of 20μm; the dispersant is polyester grafted Modified silicone and polyethylene wax are compounded at a weight ratio of 2:1; the wetting agent is white oil; the antioxidant is a compound of hindered phenolic antioxidant and phosphite antioxidant.

[0029] When preparing, weigh each raw material according to the weight percentage in Table 1, and add PP, compatibilizer, transparent ionomer and sizing agent into the high mixer, and mix at a speed of 300-400rpm for 3-5min, Add metal powder pigment, dispersant and antioxidant, and then mix at a speed of 100-200rpm for 2-3min to form a p...

Embodiment 4～6

[0039] Examples 4 to 6 relate to the spray-free scratch-resistant PP alloy material composition, and the components and their dosage are shown in Table 3. Among them, PP is homopolymerized PP with a melting index of 40g / 10min; the transparent ionic polymer is Surlyn8150; the compatibilizer is PE-g-MAH; the metal powder pigment is aluminum silver powder with a particle size of 70 μm; the dispersant is polyester grafted Modified silicone and polyethylene wax are compounded at a weight ratio of 2:1; the wetting agent is white oil; the antioxidant is a compound of hindered phenolic antioxidant and phosphite antioxidant. The concrete selection of each component is with embodiment 1.

[0040] When preparing, weigh each raw material according to the weight percentage in Table 1, and add PP, compatibilizer, transparent ionomer and sizing agent into the high mixer, and mix at a speed of 300-400rpm for 3-5min, Add metal powder pigment, dispersant and antioxidant, and then mix at a spee...

Embodiment 7

[0046]A spray-free scratch-resistant PP alloy material is prepared by using the following components and raw materials in parts by weight:

[0047] Polypropylene 100, transparent ionic polymer 5, compatibilizer 3, metal powder pigment 0.5, dispersant 0.5, sizing agent 0.5, antioxidant 0.2;

[0048] Among them, the dispersant used is compounded by polyester grafted modified silicone and polyethylene wax in a weight ratio of 2:1, and the grafting rate of polyester grafted modified silicone is 0.8%. Since the dispersant contains polyester grafted modified silicone, which has a certain reactivity, it can improve the compatibility between metal pigments and PP resin, reduce the flow difference between PP resin and metal effect powder, and slow down the flow marks. Purpose. The purpose of compounding polyethylene wax and polyester graft modified silicone is that polyethylene wax has processing lubrication effect, and can also improve the dispersion of polyester graft modified silic...

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Abstract

The invention relates to a spray-coating-free scratch-resistant PP alloy material and a preparation method thereof, wherein the spray-coating-free scratch-resistant PP alloy material is prepared from the following raw materials by weight: 100 parts of polypropylene, 5-20 parts of an transparent ionic polymer, 3-6 parts of a compatibilizer, 0.5-3 parts of a metal powder pigment, 0.5-1 part of a dispersant, 0.5-1 part of an infiltrating agent, and 0.2-0.5 part of an antioxidant, the dispersant is formed by compounding polyester grafted modified silicone and polyethylene wax according to a weight ratio of 2:1, and the graft ratio of the polyester grafted modified silicone is 0.8-2%. Compared to the material in the prior art, the material of the present invention has advantages of excellent spray-coating-free metal effect, excellent metal effect powder dispersibility and excellent scratch resistance, can effectively alleviate the flow mark problem of the traditional spray-coating-free metal effect material, is suitable for occasions having high scratch resistance requirements, and can be widely used in vehicles, home appliances, and other fields.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a spray-free scratch-resistant PP alloy material and a preparation method thereof. Background technique [0002] With the stricter national environmental protection regulations, the cost of spraying automobile or home appliance parts is gradually increasing, and the spray-free of materials has gradually become one of the hot trends in modified materials today. As a spray-free material for exterior parts, it is required that the parts not only have excellent metal texture effects, but also have certain mechanical properties and scratch resistance. [0003] Polypropylene (PP) has the characteristics of low specific gravity, high tensile strength, excellent heat resistance and chemical resistance, and good processing performance. It is one of the five general-purpose engineering plastics and is widely used in automobiles, home appliances and other fields. Due to its l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L23/14C08L23/08C08L83/10C08L23/06C08L51/06C08K3/08B29B9/06B29C48/92
CPCB29B9/06B29C48/92B29C2948/9258B29C2948/92704C08K2003/0806C08K2003/0812C08K2003/0831C08K2003/085C08K2201/003C08L23/12C08L23/14C08L2205/035C08L2205/08C08L23/0876C08L83/10C08L23/06C08L51/06C08K3/08
Inventor 陈光伟张强娄小安常晓文徐晓峰孟成铭
Owner 上海日之升科技有限公司
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