High-anti-impact, high-rigidity and high-shrinking rate polypropylene modified material and preparation method thereof

A shrinkage, polypropylene technology, applied in the high shrinkage polypropylene modified material and its preparation, high impact and high rigidity field, can solve the problems affecting the impact performance or rigidity of the material, and achieve the improvement of shrinkage rate, wide applicability, high rigidity, etc. The effect of improving impact strength

Inactive Publication Date: 2019-03-29
TIANJIN KINGFA NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The traditional methods to improve the shrinkage of polypropylene materials are to reduce the addition of elastomers, reduce the mesh number of talcum powder or use calcium carbonate instead of talc powder. These methods will affect the impact performance or rigidity of the material without exception.

Method used

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  • High-anti-impact, high-rigidity and high-shrinking rate polypropylene modified material and preparation method thereof
  • High-anti-impact, high-rigidity and high-shrinking rate polypropylene modified material and preparation method thereof
  • High-anti-impact, high-rigidity and high-shrinking rate polypropylene modified material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A high-impact, high-rigidity, high-shrinkage polypropylene modified material, including the following components in parts by weight: impact copolymer polypropylene 1 40.0 parts, impact copolymer polypropylene 2 10.0 parts, homopolypropylene 20.0 parts, Toughening agent (ethylene-octene copolymer) 9.0 parts, spherical silicon (spherical silicon powder) 20.0 parts, nucleating agent (TMP-6) 0.2 parts, antioxidant 1010 0.3 parts, antioxidant 168 0.3 parts.

[0038] The preparation method of the described high-impact, high-rigidity, high-shrinkage polypropylene modified material comprises the following steps:

[0039] (1) Weigh the polypropylene, spherical silicon, toughening agent, nucleating agent, primary antioxidant and auxiliary antioxidant of the formula, and mix them in a high-speed mixer (550r / min) for 2min, mix Uniformly, a premix is ​​obtained.

[0040] (2) Add the premixed material into the main feeding port of the twin-screw extruder, perform melt extrusion, gra...

Embodiment 2

[0043]A high-impact, high-rigidity, high-shrinkage polypropylene modified material, including the following components in parts by weight: impact copolymer polypropylene 1 45.0 parts, impact copolymer polypropylene 2 10.0 parts, homopolypropylene 20.0 parts, Toughening agent (ethylene-octene copolymer) 9.0 parts, spherical silicon (spherical silicon powder) 15.0 parts, nucleating agent (TMP-6) 0.4 parts, antioxidant 1010 0.3 parts, antioxidant 168 0.3 parts.

[0044] The preparation method of the high-impact, high-rigidity, and high-shrinkage polypropylene modified material is the same as in Example 1, except that the conditions for melt extrusion are: the temperature in the first zone is 100°C, the temperature in the second zone is 200°C, and the temperature in the third zone is 200°C. The temperature is 215°C, the temperature in the fourth zone is 215°C, the temperature in the fifth zone is 225°C, the temperature in the sixth zone is 215°C, the temperature in the seventh zone...

Embodiment 3

[0046] A high-impact, high-rigidity, high-shrinkage polypropylene modified material, including the following components in parts by weight: impact copolymer polypropylene 1 53.0 parts, impact copolymer polypropylene 2 10.0 parts, homopolypropylene 20.0 parts, Toughening agent (ethylene-octene copolymer) 6.0 parts, spherical silicon (spherical silicon powder) 10.0 parts, nucleating agent (TMP-6) 0.4 parts, antioxidant 1010 0.3 parts, antioxidant 168 0.3 parts.

[0047] The preparation method of the high-impact, high-rigidity, and high-shrinkage polypropylene modified material is the same as in Example 1, except that the conditions for melt extrusion are: the temperature in the first zone is 115°C, the temperature in the second zone is 207°C, and the temperature in the third zone is 115°C. The temperature is 218°C, the temperature in the fourth zone is 220°C, the temperature in the fifth zone is 225°C, the temperature in the sixth zone is 215°C, the temperature in the seventh zon...

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Abstract

The invention provides a high-anti-impact, high-rigidity and high-shrinking rate polypropylene modified material and a preparation method thereof. The material includes, by weight, 40-90 parts of polypropylene resin, 5-30 parts of spherical silicon, 5-15 parts of a toughener, 0.1-2 parts of a nucleating agent, 0.2-0.4 parts of a main anti-oxygen agent and 0.2-0.4 parts of an assistant anti-oxygenagent. By selecting the proper polypropylene resin, elastomer and inorganic filler, the material is improved in both anti-impact strength and shrinking rate, so that the material is guaranteed in sizeand physical properties in a product with large mold-opening shrinking rate.

Description

technical field [0001] The invention belongs to the field of modified plastics, in particular to a modified polypropylene material with high impact, high rigidity and high shrinkage rate and a preparation method thereof. Background technique [0002] In recent years, polypropylene materials have been widely used in the automotive field. Parts such as bumpers, dashboards, door panels, and pillars will use polypropylene materials. Different parts have different requirements for the mechanical properties of materials. At the same time, due to the different structural designs of parts, molds The shrinkage rate of the mold opening is different, and the shrinkage rate requirements for polypropylene materials are also different. For example, parts such as bumpers and instrument panels have higher requirements for the balance of rigidity and toughness of the material. At the same time, due to the large size of the product, the shrinkage rate of the material The requirements are also...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L23/12C08L23/08C08K3/36C08K5/134C08K5/526
CPCC08L23/14C08L2205/025C08L2205/035
Inventor 张栋玮李晟张春怀李欣徐昌竹张海洋
Owner TIANJIN KINGFA NEW MATERIAL
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