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Mineral/whisker reinforced polypropylene composite material having good spraying property

A composite material, polypropylene technology, applied in the field of plastic processing, can solve the problems of high-rigidity polypropylene composite coating performance (poor spraying performance, limited application range of high-rigidity polypropylene composites, low notched impact strength, etc.) Good spray characteristics, good spray performance, reduced dosage

Inactive Publication Date: 2008-08-27
JIANGNAN MOLD & PLASTIC TECH
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although polypropylene has excellent comprehensive mechanical properties, it has a particularly obvious disadvantage: low notched impact strength and poor low temperature toughness
Due to the non-polar nature of the poly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example

[0032] Comparative Example and Examples 1 to 4:

[0033] Two polypropylene resins are used as base materials, surface-modified whiskers are used as reinforcing agents, surface-modified talc is used as fillers, and maleic anhydride grafted thermoplastic polyolefin elastomers are used as polar modifiers. POE( Thermoplastic polyolefin elastomer) is a toughening agent, and the batching ratio is shown in Table 1.

[0034] Table 1 Ingredients of high-rigidity polypropylene composite material with good sprayability

[0035] Ingredients

[0036] The preparation process of the present invention is as follows:

[0037] (1) Inorganic minerals and whiskers are respectively surface-treated with silane coupling agent KH-550, the dosage of KH550 is 1.5%;

[0038] (2) Weigh each component according to the proportion, mix at high speed in a high-speed mixer for 3 to 4 minutes, and then discharge;

[0039] (3) The mixed raw materials are extruded and pelletized by a twin-screw extruder. T...

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PUM

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Abstract

The invention relates to mineral/crystal whisker reinforcement polypropylene composite material which has excellent spraying property, which is mainly comprises the following raw materials with proportioning by weight: 50-70% polypropylene, 15-30% inorganic crystal whisker, 5-15% inorganic mineral, 5-10% polarity modifier, 5-15% toughening agent POE, 0.1-0.4% anti-oxidant and 0.1-3% other auxiliary agent, wherein inorganic mineral and crystal whisker are respectively conducted with surface treatment trough coupling agent, polarity modifier is polyolefine thermoplastic elastomer grafted by maleic anhydride, and the grafting rate is 0.8-1.2%. The product of the invention has excellent spraying property, and high rigidity and strength. The product of the invention can be used as car components such as guard strips and the like, can be also used on household appliances such as laundry machine and the like, and especially is suitable for places which have higher requirement for spraying such as various external decorative elements of cars, etc.

Description

technical field [0001] The present invention relates to a mineral / whisker reinforced polypropylene composite material with good sprayability. It can be used in home appliances and automobiles. It belongs to the technical field of plastic processing. Background technique [0002] Polypropylene, as a bulk polyolefin material with both superior comprehensive performance and low cost, has been widely used in interior and exterior trim parts of automobiles and various household appliances. At present, with the continuous development of technology, people put forward higher and higher requirements for various properties of plastics (such as impact resistance, strength and rigidity, sprayability, fluidity, etc.), which poses a huge challenge to the plastics industry. challenge. [0003] Although polypropylene has excellent comprehensive mechanical properties, it has a particularly obvious disadvantage: low notched impact strength and poor low temperature toughness. Therefore, i...

Claims

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Application Information

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IPC IPC(8): C08L23/10C08K13/06C08K7/04C08J5/06C08L51/06
Inventor 曹克波周龙建柳庆春
Owner JIANGNAN MOLD & PLASTIC TECH
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