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Scratch-resistant modified PP material and preparation method thereof

A scratch-resistant and scratch-resistant agent technology, applied in the field of scratch-resistant modified PP materials and its preparation, can solve the problem of scratch resistance and odor emission, can not meet the performance requirements of automotive interior parts such as odor, and high cost question

Pending Publication Date: 2020-10-20
上海奉坤新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the main method to improve the scratch resistance of modified PP materials is to add a scratch-resistant agent to form a protective film through the migration of the scratch-resistant agent on the plastic surface, thereby reducing the friction coefficient and improving the scratch resistance. The characteristics of the anti-scratch agent itself lead to the high content of volatile organic compounds in the PP material, which cannot meet the performance requirements of automotive interior parts for odor and other properties. At the same time, the cost of using the anti-scratch agent alone is generally high
[0004] Therefore, there is an urgent need to develop a modified PP material that can effectively solve the problems of scratch resistance and odor emission.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A preparation method of scratch-resistant modified PP material, comprising the following steps:

[0025] S1. Mix 65 parts of PP resin, 20 parts of toughening agent, 3 parts of antioxidant, 4 parts of compatibilizer, 3.5 parts of anti-scratch agent, 20 parts of talcum powder, and 4 parts of color masterbatch in a high-speed mixer for 30- 40min, the mixed powder is obtained;

[0026] S2. Add the mixed powder obtained in step S1 into a twin-screw extruder, melt extrude, and granulate to obtain a scratch-resistant modified PP material.

[0027] Among them, the extrusion working temperature of the twin-screw extruder is 190-210°C in the first zone, 200-220°C in the second zone, 210-230°C in the third zone, and 210-220°C in the fourth zone. The residence time of the entire extrusion process is 1 -2 minutes, the pressure is 12-18Mpa.

Embodiment 2

[0029] A preparation method of scratch-resistant modified PP material, comprising the following steps:

[0030] S1. Mix 85 parts of PP resin, 5 parts of toughening agent, 0.1 part of antioxidant, 0.5 part of compatibilizer, 2 parts of anti-scratch agent, 5 parts of talcum powder, and 1 part of masterbatch in a high-speed mixer for 30- 40min, the mixed powder is obtained;

[0031] S2. Add the mixed powder obtained in step S1 into a twin-screw extruder, melt extrude, and granulate to obtain a scratch-resistant modified PP material.

[0032] Among them, the extrusion working temperature of the twin-screw extruder is 190-210°C in the first zone, 200-220°C in the second zone, 210-230°C in the third zone, and 210-220°C in the fourth zone. The residence time of the entire extrusion process is 1 -2 minutes, the pressure is 12-18Mpa.

Embodiment 3

[0034] A preparation method of scratch-resistant modified PP material, comprising the following steps:

[0035] S1. Mix 70 parts of PP resin, 10 parts of toughening agent, 1.5 parts of antioxidant, 4 parts of compatibilizer, 3 parts of anti-scratch agent, 15 parts of talcum powder, and 3 parts of color masterbatch in a high-speed mixer for 30- 40min, the mixed powder is obtained;

[0036] S2. Add the mixed powder obtained in step S1 into a twin-screw extruder, melt extrude, and granulate to obtain a scratch-resistant modified PP material.

[0037] Among them, the extrusion working temperature of the twin-screw extruder is 190-210°C in the first zone, 200-220°C in the second zone, 210-230°C in the third zone, and 210-220°C in the fourth zone. The residence time of the entire extrusion process is 1 -2 minutes, the pressure is 12-18Mpa.

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Abstract

The invention discloses a scratch-resistant modified PP material, which is prepared from the following components in parts by weight: 65 to 85 parts of PP resin, 5 to 20 parts of a toughening agent, 0.1 to 3 parts of an antioxidant, 0.5 to 5 parts of a compatilizer, 2 to 4 parts of a scratch-resistant agent, 5 to 20 parts of talcum powder and 0 to 4 parts of color master batch, wherein the PP resin is one or more of homo-polymerized PP and copolymerized PP, the melt indexes of the homo-polymerized PP and the copolymerized PP are 20-25g / 10min under the test conditions of 230 DEG C and 2.16 Kg,the crystallinity of the homo-polymerized PP and the copolymerized PP is greater than 60%; and the scratch-resistant agent is a polysiloxane substance. The scratch-resistant modified PP material has the advantages of better scratch resistance, low odor, good comprehensive performance, simple production process and low cost.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a scratch-resistant modified PP material and a preparation method thereof. Background technique [0002] In recent years, my country's automobile industry has developed rapidly. In order to ensure the safety, appearance and reduce energy consumption of automobiles, more and more plastic parts are used in automobiles, among which PP, ABS, PA and other materials are used most. PP material is not only light in weight and relatively low in price, but also has the advantages of good chemical corrosion resistance, heat resistance, balanced mechanical properties and excellent processability, but also has large shrinkage rate, poor dimensional stability, Poor low temperature toughness, poor heat and light aging resistance and other defects. After blending and modifying PP materials with tougheners, fillers, anti-aging agents, etc., it can meet the requirements of automobile us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/14C08L83/04C08L23/08C08K13/02C08K5/3492C08K5/134C08K5/372C08K5/526C08K3/34C08J3/24
CPCC08J3/246C08J2323/12C08J2423/12C08J2323/14C08J2423/14C08J2483/04C08J2423/08C08K13/02C08K5/34924C08K5/1345C08K5/372C08K5/526C08K3/34
Inventor 徐金涛
Owner 上海奉坤新材料有限公司
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