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Stress-whitening-resistant filling-modified polypropylene composite material and preparation method thereof

A technology for anti-stress whitening and composite materials, which is applied in the field of anti-stress whitening filled modified polypropylene composite materials and its preparation, can solve the problems of not being able to fundamentally eliminate stress whitening, reduce stress whitening, etc., and achieve elimination of stress whitening. Filled modified polypropylene with stress whitening defects, low production cost and stable performance

Active Publication Date: 2013-08-21
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method of eliminating stress whitening can only reduce the possibility of stress whitening to a certain extent, but cannot fundamentally eliminate stress whitening

Method used

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  • Stress-whitening-resistant filling-modified polypropylene composite material and preparation method thereof
  • Stress-whitening-resistant filling-modified polypropylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 4

[0049] (1) Weigh the raw materials of each component according to the following parts by weight:

[0050] Copolymerized polypropylene (melt index at 20g / 10min) 65 parts,

[0051] Toughener POE (tensile strength at 10MPa) 10 parts,

[0052] Mineral filler talcum powder (particle size is 800 mesh) 25 parts,

[0053] Dispersant ethylene bis stearic acid amide 0.4 part,

[0054] Silane coupling agent KH-550 (purity greater than 97%) 0.1 parts,

[0055] Antioxidant 1010 0.1 part,

[0056] Antioxidant 168 0.3 parts,

[0057] Light stabilizer V703 0.015 parts,

[0058] 0.01 part of initiator dicumyl peroxide,

[0059] 0.2 parts of auxiliary crosslinking agent divinylbenzene;

[0060] (2) Add the mineral filler into the high-speed mixer, then add the dispersant and coupling agent and stir at 1000rpm for 1min, then add polypropylene, toughener, phenolic antioxidant 1010, phosphite antioxidant 168 in sequence , hindered amine light stabilizer V703, initiator and co-crosslinking ag...

Embodiment 5

[0063] (1) Weigh the raw materials of each component according to the following parts by weight:

[0064] Copolymerized polypropylene (melt index at 30g / 10min) 70 parts,

[0065] Toughener POE (tensile strength at 15MPa) 5 parts,

[0066] 30 parts of mineral filler talcum powder (particle size is 1250 mesh),

[0067] Dispersant ethylene bis stearic acid amide 0.35 parts,

[0068] Silane coupling agent KH-550 (purity greater than 97%) 0.2 parts,

[0069] Antioxidant 1010 0.3 parts,

[0070] Antioxidant 168 0.1 parts,

[0071] Light stabilizer V703 0.015 parts,

[0072] 0.1 part of initiator dicumyl peroxide,

[0073] 0.4 parts of auxiliary crosslinking agent divinylbenzene;

[0074] (2) Add the mineral filler to the high-speed mixer, then add the dispersant and coupling agent and stir at 900rpm for 3 minutes, then add polypropylene, toughener, phenolic antioxidant 1010, and phosphite antioxidant 168 in sequence , hindered amine light stabilizer V703, initiator and co-cr...

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Abstract

The invention discloses a stress-whitening-resistant filling-modified polypropylene composite material. The composite material comprises the following components by weight parts: 55-75 parts of polypropylene, 5-20 parts of a flexibilizer, 20-30 parts of mineral fillers, 0.2-0.4 parts of a dispersant, 0.1-0.3 parts of a coupling agent, 0.1-0.3 parts of a phenols anti-oxidant 1010, 0.1-0.3 parts of a phosphite anti-oxidant 168, 0.01-0.03 parts of a hindered amine light stabilizer V703, 0.01-0.1 parts of an initiator and 0.2-0.5 parts of a auxiliary crosslinking agent. The invention further discloses a preparation method of the stress-whitening-resistant filling-modified polypropylene composite material. According to the invention, through the initiator and the auxiliary crosslinking agent, interaction of each phase in a blending system is improved, the problem of stress whitening can be fundamentally solved through forming part chemical bonds, a production cost is low and performances are stable.

Description

technical field [0001] The invention relates to the technical field of polymer composite materials, in particular to an anti-stress whitening filled modified polypropylene composite material and a preparation method thereof. Background technique [0002] Polypropylene (PP) has good bending resistance (commonly known as pleated glue), and has the advantages of non-toxic, odorless, low density, high strength and hardness, and good heat resistance. It is a general-purpose thermoplastic resin. With the increasingly fierce market competition, increasingly harsh use environment and continuous improvement of product performance, all walks of life have put forward higher requirements for the performance of polypropylene (PP), and ordinary polypropylene (PP) has been difficult to meet the needs of the industry , in order to meet different requirements, it is necessary to carry out different modification treatments on polypropylene (PP) to make it adapt to different needs. [0003] M...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08K13/02C08K3/34C08K5/04C08K5/20C08K5/14C08K5/01B29C47/92B29C48/92
CPCB29C48/04B29C48/40B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92923
Inventor 汪海
Owner HEFEI GENIUS NEW MATERIALS
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