Low temperature resistant polypropylene material and preparation method thereof

A polypropylene material and low-temperature-resistant technology, which is applied in the field of low-temperature-resistant polypropylene materials and their preparation, can solve the problem of the inability to perfectly combine low-temperature toughness and good rigidity, failure to achieve automotive safety performance, and unclear low-temperature performance indicators, etc. problems, to achieve good dimensional stability, enhanced rigidity, and less small molecular substances

Inactive Publication Date: 2015-05-06
TIANJIN MEIYA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, EP0794222-A1 discloses a thermoplastic resin composition comprising polypropylene, styrene-containing elastomer and talcum powder, in which an acceptable balance of toughness and rigidity is reported; CN101550252A discloses a composition composed of polypropylene, polyethylene, A polypropylene composition with good low-temperature performance and good appearance composed of ethylene-based copolymer rubber, polypropylene nucleating agent, talcum powder and antioxidant, although the patent discloses that polyethylene and ethylene-based copolymer rubber are jointly toughened effect, but its low-temperature performance index is not clear; the polypropylene material modified

Method used

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  • Low temperature resistant polypropylene material and preparation method thereof
  • Low temperature resistant polypropylene material and preparation method thereof
  • Low temperature resistant polypropylene material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] According to the mass ratio, 87% polypropylene (Rockwell hardness 90R-scale, melt index 40g / 10min, tensile strength 40Mpa), 10% ethylene-octene copolymer (Dow 8200), 2% poly Ethylene (Sinopec 2911), 1% auxiliary agent (auxiliary agent includes anti-ultraviolet agent and antioxidant, wherein the content ratio of anti-ultraviolet agent V703 and UV-3808PP5 is 1:1, and antioxidant 1010 and antioxidant The ratio between 168 and 168 is 1:1), mix well in a high mixer, and then knead the blend in a twin-screw extruder. The set temperature of each section of the twin-screw extruder is 220°C, and the speed of the twin-screw extruder is 600r / min; extruded and granulated, and finally the experimental material No. 1 is obtained (see Table 2).

Embodiment 2

[0033] According to the mass ratio, 85% polypropylene (Rockwell hardness 90R-scale, melt index 40g / 10min, tensile strength 40Mpa), 12% ethylene-octene copolymer (LG565), 2% polyethylene ( Sinopec 2911), 1% additives (auxiliary agents include anti-ultraviolet agent and antioxidant, wherein the content ratio of anti-ultraviolet agent V703 to UV-3808PP5 is 1:1, and the ratio of antioxidant 1010 to 168 in the antioxidant The ratio between them is 1:1), mixed uniformly in a high-speed mixer, and then the blend was mixed in a twin-screw extruder. The set temperature of each section of the twin-screw extruder is 220°C, and the speed of the twin-screw extruder is 600r / min; extruded and granulated, and finally the experimental material No. 2 is obtained (see Table 2).

Embodiment 3

[0035] According to the mass ratio, 85% polypropylene (Rockwell hardness 90R-scale, melt index 40g / 10min, tensile strength 40Mpa), 10% ethylene-octene copolymer (Dow 8200), 4% poly Ethylene (Sinopec 8920), 1% auxiliary agent (auxiliary agent includes anti-ultraviolet agent and antioxidant, wherein the content ratio of anti-ultraviolet agent V703 and UV-3808PP5 is 1:1, and antioxidant 1010 and antioxidant The ratio between 168 and 168 is 1:1), mix well in a high mixer, and then knead the blend in a twin-screw extruder. The set temperature of each stage of the twin-screw extruder is 220°C, and the speed of the twin-screw extruder is 600r / min; extruded and granulated, and finally the experimental material No. 3 is obtained (see Table 2).

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Abstract

The invention creatively provides a low temperature resistant polypropylene material and a preparation method thereof. The low temperature resistant polypropylene material comprises, by mass, 54-88% of polypropylene, 10-20% of elastomer, 0-10% of polyethylene and 0.4-1% of an assistant. The low temperature resistant polypropylene material has good low temperature toughness and rigidity in low temperature environment, has obviously better brittle temperature than other like products in the market, and can reach an expected effect without increasing the production cost.

Description

technical field [0001] The invention relates to a polypropylene material, in particular to a low-temperature resistant polypropylene material and a preparation method thereof. Background technique [0002] Polypropylene material has been widely used in the automotive industry because of its light weight, solvent resistance, easy processing and easy recycling, especially as the main material for the preparation of automotive interior and exterior trims. However, the brittleness / toughness transition temperature of existing polypropylene materials is generally high, and the surface of the material is brittle in a low temperature environment, which greatly limits the scope of application of the material in practice. [0003] In order to improve the low-temperature toughness of polypropylene, the usual method is to increase the toughness of the material by adding elastomers. For example, EP0794222-A1 discloses a thermoplastic resin composition comprising polypropylene, styrene-c...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/08C08L23/06C08K5/134C08K5/526
CPCC08L23/12C08L2205/03C08L2207/04C08L2207/062
Inventor 张辉刘季轩白璐
Owner TIANJIN MEIYA CHEM
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