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Low-temperature-impact-resistant modified polypropylene

A technology of impact modification and polypropylene, applied in the field of composite materials, can solve the problems of low notched impact strength, affecting the scope of application, and unsatisfactory effects, so as to promote stress field interference, improve mechanical properties, and increase external force tensile or impact Effect

Inactive Publication Date: 2017-09-15
SUZHOU SUNWAY POLYMER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its notch sensitivity is particularly significant, and the notched impact strength is low, especially at low temperatures, which seriously affects its scope of application.
People often use some rubber or thermoplastic elastomers such as POE, EPDM, EVA and SBS to modify polypropylene to improve its low-temperature notched impact performance, but the effect is not ideal

Method used

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  • Low-temperature-impact-resistant modified polypropylene
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  • Low-temperature-impact-resistant modified polypropylene

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Embodiment Construction

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0019] Weigh the raw materials according to the formula amounts of each embodiment in the following table 1, add the weighed samples into the high mixer, rotate at a speed of 1000 rpm, and mix for 20 minutes. After fully mixing, the premix is ​​obtained, and then the premix is The mixed material is transferred to the twin-screw extruder. The extrusion temperature of the twin-screw extruder is: 180°C in the first zone, 190°C in the second zone, 180°C in the third zone, and 170°C in the fourth zone. The rotating speed is 600 rpm, extrusion...

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PUM

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Abstract

The invention discloses low-temperature-impact-resistant modified polypropylene composed of, by weight, 55-85 parts of polypropylene PP, 3-10 parts of a toughening agent POE, 1-5 parts of linear low density polyethylene (LLDPE), 0.1-1 part of a coupling agent, 0.2-0.5 parts of a super-dispersant, and 0.1-0.5 parts of a beta-nucleating agent. The low-temperature-impact-resistant modified polypropylene has good low-temperature-impact resistance and has a larger application range.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a low temperature resistant impact modified polypropylene. Background technique [0002] Polypropylene has the advantages of good comprehensive performance and low price, so it is widely used in industries such as automobiles and electrical appliances. However, its notch sensitivity is particularly significant, and the notched impact strength is low, especially at low temperatures, which seriously affects its scope of application. People often use some rubber or thermoplastic elastomers such as POE, EPDM, EVA and SBS to modify polypropylene to improve its low-temperature notched impact performance, but the effect is not ideal. Contents of the invention [0003] The purpose of the present invention is to overcome the above problems existing in the prior art, and provide a low-temperature impact-resistant modified polypropylene. The modified polypropylene composite m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/08C08K5/54C08K5/20
CPCC08L23/12C08L2205/02C08L2205/025C08L2205/03C08L2205/242C08L23/0815C08K5/54C08K5/20
Inventor 任俊余林华
Owner SUZHOU SUNWAY POLYMER
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