Ultra-low temperature toughened polypropylene composition

A polypropylene composition and ultra-low temperature technology, which is applied in the field of polypropylene composition, can solve the problems of unsatisfactory automobile safety performance, evaluation of multi-axial low-temperature impact strength, insufficient comprehensive performance of low-temperature impact toughness and rigidity, etc., and achieve good rigidity , maintain rigidity, and improve low-temperature impact performance

Active Publication Date: 2014-03-26
TIANJIN KINGFA NEW MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the polypropylene composite materials disclosed in the above documents still have the defect that the comprehensive properties of low temperature impact toughness and rigidity are not good enough.
Moreover, these technologies use the notched impact strength of cantilever beam or simply supported beam...

Method used

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  • Ultra-low temperature toughened polypropylene composition
  • Ultra-low temperature toughened polypropylene composition
  • Ultra-low temperature toughened polypropylene composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-5、 comparative example 1-5

[0035] A kind of polypropylene composition, its preparation method comprises the following steps:

[0036] (1) Mix 20% POE and 80% talcum powder at 170°C, granulate and cool to obtain talcum powder masterbatch with POE as the carrier; the percentages mentioned are the percentages of each raw material in the total mass of raw materials;

[0037] (2) The raw material formula of the polypropylene composition is shown in Table 1. After mixing the raw materials, put them into a twin-screw extruder, melt and mix them at 230°C, and then granulate and cool to obtain a polypropylene composition.

[0038] The tougheners used in the examples and comparative examples are different, and their specific performance parameters are shown in Table 2.

[0039] The polypropylene composition that embodiment and comparative example obtain adopts the following methods to test its relative performance:

[0040] (1) Flexural modulus: tested according to ISO178, the speed is 2mm / min;

[0041] (2) Izo...

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PUM

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Abstract

The invention discloses an ultra-low temperature toughened polypropylene composition. The ultra-low temperature toughened polypropylene composition comprises the following components: 40-80% of polypropylene, 15-30% of a toughening agent and 5-30% of a filling reinforcing agent. According to the invention, elastic bodies with low density, low melt index and low glass transition temperature are selected and used to be in crosslinking with dicumyl peroxide (DCP) to obtain XPOE used as the toughening agent. The prepared polypropylene composition has good low temperature impact toughness, particularly, the multi-shaft low temperature impact strength, and also has good rigidity. An automobile upholstery prepared by using the ultra-low temperature toughened polypropylene composition can meet the automobile industrial safety and appearance use requirements, and can pass an ultra-low temperature (-40 DEG C) multi-shaft impact test.

Description

technical field [0001] The invention relates to a polypropylene composition, in particular to an ultra-low temperature tough polypropylene composition and a preparation method thereof. Background technique [0002] Polypropylene PP is a general-purpose plastic with a wide range of uses. It is polymerized from propylene monomer. Its melting point is 165~175°C and it is a semi-crystalline plastic. Polypropylene plastic has the characteristics of light weight and easy processing, and has become the largest and fastest-growing variety of automotive plastics. However, polypropylene material has poor low temperature resistance and low rigidity, which cannot meet the requirements and standards of automotive interior parts. Interior parts include instrument panel, auxiliary instrument panel, A, B and C pillars, glove box, door panel, rear tail box panel, etc. [0003] In order to improve the low-temperature toughness and rigidity of polypropylene, the usual method is to add elast...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08L23/08C08K13/02C08K5/14C08K3/34C08J3/22
CPCC08J3/226C08J2323/14C08J2423/08C08L23/14C08L2205/025C08L2205/03C08L23/0815C08K13/02C08K5/14C08K3/34
Inventor 肖华明刘奇祥陶四平李晟张春怀李欣王扬利
Owner TIANJIN KINGFA NEW MATERIAL
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