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Polypropylene composite material with obvious pearlescent effect, and preparation method and application thereof

A composite material, pearlescent effect technology, applied in the field of polypropylene modification, to achieve the effect of improving rigidity and hardness, improving scratch resistance, and obvious pearlescent effect

Active Publication Date: 2020-04-10
WANHUA CHEMICAL (NINGBO) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a high-hardness and low-shrinkage polypropylene composite material with obvious pearlescent effect that can replace ABS and its preparation method, so as to solve the bottleneck of the application of existing polypropylene materials in replacing spray-free ABS materials, and can On the existing ABS mold, the polypropylene material with high hardness, low shrinkage and obvious pearlescent effect can be realized, which can be applied to many fields such as small household appliances, electronic and electrical shells, etc.

Method used

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  • Polypropylene composite material with obvious pearlescent effect, and preparation method and application thereof
  • Polypropylene composite material with obvious pearlescent effect, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Preparation of glass fiber-based pearlescent pigments: put 100kg of chopped glass fibers into the first high-temperature furnace at 1250°C for melting, set a 14um aperture spinneret tray at the bottom of the melting furnace, open the spinneret tray, and melt the glass The fiber filaments are sprayed out and passed through the second high-temperature melting furnace at 650°C under the traction of the wire rack in the horizontal direction. A stirring paddle is set at the bottom of the high-temperature furnace, and 2.3kg of titanium dioxide and 0.25kg of pure zinc are melted and dispersed, and the titanium dioxide and metallic zinc are uniform It is dip-coated on the smooth glass fiber surface, and cut into 3-5mm fiber segments by a shredder under the traction of the wire separator, and finally obtains a glass fiber-based pearlescent pigment with a coating rate of 70%.

[0042] (2) Preparation of polypropylene composite material: Weigh 7.2kg of high stiffness copolymer ...

Embodiment 2

[0044] (1) Preparation of glass fiber-based pearlescent pigments: put 100kg of chopped glass fibers into the first high-temperature furnace at 1250°C for melting, set a 14um aperture spinneret tray at the bottom of the melting furnace, open the spinneret tray, and melt the glass The fiber filaments are sprayed out and passed through the second high-temperature melting furnace at 700°C under the traction of the wire rack in the horizontal direction. Stirring paddles are installed at the bottom of the high-temperature furnace to melt and disperse 3.3kg of titanium dioxide and 1.7kg of pure zinc, and the titanium dioxide and metal zinc are uniform It is dip-coated on the smooth glass fiber surface, and cut into 3-5mm fiber segments by a shredder under the traction of the wire separator, and finally obtains a glass fiber-based pearlescent pigment with a coating rate of 85%.

[0045] (2) Preparation of polypropylene composite material: Weigh 7.0kg homopolypropylene PPH-PP6012, 0.45k...

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Abstract

The invention discloses a polypropylene composite material with an obvious pearlescent effect, and a preparation method and an application thereof. The polypropylene composite material comprises polypropylene, a glass fiber-based pearlescent pigment, a compatilizer, a dispersing agent and an antioxidant. A certain proportion of the glass fiber-based pearlescent pigment is added to a low-shrinkagepolypropylene material with the pearlescent effect, so the low-shrinkage polypropylene material with the obvious pearlescent effect, the Rockwell hardness of 105 or above and the shrinkage rate of 0.5% or below can be obtained, and the composite material can directly replace an ABS material with the spraying-free pearlescent effect on an existing ABS mold, and is widely applied to the industries of automobiles, small household appliances, toys and the like.

Description

technical field [0001] The invention relates to a polypropylene composite material, in particular to a high-hardness and low-shrinkage polypropylene composite material with obvious pearlescent effect that can replace ABS, a preparation method and application thereof, and belongs to the technical field of polypropylene modification. Background technique [0002] As a general-purpose plastic, polypropylene has the advantages of low price and good weather resistance, and is widely used in automobiles, home appliances, office supplies and various electronic appliances. With the demand of downstream customers for PP to replace ABS materials, especially in some downstream applications that require pearlescent effect, such as small household appliance casings, electronic appliance casings and other products, higher requirements are put forward for PP materials, such as high hardness, durability Scratch free, low shrinkage and has a clear pearlescent effect. PP materials have probl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L23/12C08L51/06C08K9/10C08K7/14
CPCC08L23/14C08L23/12C08L51/06C08K9/10C08K7/14
Inventor 顾永江付懿东李旭陆佳伟
Owner WANHUA CHEMICAL (NINGBO) CO LTD
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