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A kind of anti-tiger skin texture polypropylene resin composition and preparation method thereof

A polypropylene resin, anti-tiger grain technology, applied in the field of polymer material modification, can solve the problems of tiger skin grain, flow marks, etc., to improve the crystallization temperature, avoid flow imbalance, and excellent toughening effect Effect

Active Publication Date: 2022-07-05
ORINKO NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, it is necessary for the present invention to provide an anti-tiger-skin polypropylene resin composition and a preparation method thereof, the anti-tiger-skin polypropylene resin overcomes the traditional problem of improving the melt index and sacrificing material toughness to solve the tiger-skin defect method, thus solving defects such as tiger skin pattern and flow marks in thin-walled materials

Method used

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  • A kind of anti-tiger skin texture polypropylene resin composition and preparation method thereof
  • A kind of anti-tiger skin texture polypropylene resin composition and preparation method thereof
  • A kind of anti-tiger skin texture polypropylene resin composition and preparation method thereof

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Effect test

Embodiment 7

[0039] The first copolymerized polypropylene (230°C, 2.16kg melt flow rate: 0.5g / 10min), the second copolymerized polypropylene (230°C, 2.16kg melt flow rate: 30g / 10min), ethylene-propylene copolymer ( 190°C, 2.16kg melt flow rate: 0.5g / 10min), ethylene-butene copolymer (190°C, 2.16kg melt flow rate: 10g / 10min), talc powder with a particle size of 5000 meshes, an aspect ratio of 10:1 wollastonite, β-type nucleating agent and ethylene bis-stearamide were placed in a high-speed mixing pot and mixed for 5 minutes according to the ratio in Example 1. The remaining preparation steps were the same as those in Example 1. The finished product of the anti-tiger skin texture polypropylene resin composition.

Embodiment 8

[0041] 10% of the first copolymerized polypropylene (230°C, 2.16kg melt flow rate: 3g / 10min), 64% of the second copolymerized polypropylene (230°C, 2.16kg melt flow rate: 60g / 10min), 5% ethylene-propylene copolymer (190°C, 2.16kg melt flow rate: 1 g / 10min), 5% ethylene-butene copolymer (190°C, 2.16kg melt flow rate: 30g / 10min), 5% pellets The talc powder with a diameter of 7000 meshes, 10% wollastonite with an aspect ratio of 10:1, 0.5% β-type nucleating agent, and 0.5% ethylene bis-stearamide were prepared according to the same preparation method as in Example 1. The finished product of the tiger skin pattern polypropylene resin composition.

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Abstract

The invention discloses an anti-tiger skin texture polypropylene resin composition and a preparation method thereof. ‑15% second toughening agent, 10‑30% wollastonite, 0‑20% talc, 0.5‑1% nucleating agent and 0.5‑1% lubricant by weight The melt flow rate of the first polypropylene is 0.5-3g / 10min, and the melt flow rate of the second polypropylene is 30-100g / 10min; at 190°C, 2.16kg of the first toughening agent The melt flow rate is 0.5-1g / 10min, and the melt flow rate of the second toughening agent is 10-30g / 10min. The polypropylene resin composition of the present invention can avoid the appearance of tiger skin lines and flow marks when the wall is thinned.

Description

technical field [0001] The invention belongs to the field of polymer material modification, and in particular relates to an anti-tiger stripe polypropylene resin composition and a preparation method thereof. Background technique [0002] Polypropylene is a general-purpose plastic with excellent comprehensive properties. It has the characteristics of low price, light weight, solvent resistance, and easy recycling. It is widely used in large parts such as automobiles and home appliances. However, with the rise of thin-walled parts in recent years, parts The surface is more and more prone to defects such as tiger skin patterns and flow marks, which plagues the thin-walled process of large parts. [0003] Tiger skin pattern is a phenomenon of flow marks on the surface of injection molded parts, mainly because the polypropylene melt flows in a fountain-like manner in the mold cavity through the glue port. During the flow of the melt in the mold cavity, the rubber particles stretc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/14C08L23/08C08K13/02C08K3/34C08K5/20
CPCC08L23/14C08K2201/014C08L2205/025C08L2205/035C08L2205/242C08L23/0815C08K13/02C08K3/34C08K5/20Y02P70/10
Inventor 闫溥罗鹏邵之杰杜静李荣群
Owner ORINKO NEW MATERIAL CO LTD
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