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Glass fiber modified polypropylene with high impact resistance and high modulus and preparation method thereof

A technology of glass fiber and high modulus, which is applied in the field of polypropylene and its composition, can solve the problem that the impact and other mechanical properties of glass fiber modified polypropylene cannot be improved at the same time, and achieve the goal of improving impact performance and impact resistance Effect

Pending Publication Date: 2020-10-02
WANHUA CHEM GRP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a high-impact, high-modulus glass fiber-modified polypropylene and a preparation method thereof, aiming at the inability to simultaneously improve the impact and other mechanical properties of glass fiber-modified polypropylene in the prior art

Method used

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  • Glass fiber modified polypropylene with high impact resistance and high modulus and preparation method thereof
  • Glass fiber modified polypropylene with high impact resistance and high modulus and preparation method thereof
  • Glass fiber modified polypropylene with high impact resistance and high modulus and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] (1) Weigh 5wt.% of thermoplastic polyurethane elastomer, 0.2wt.% of primary antioxidant, and 0.1wt.% of secondary antioxidant, put them in a high-speed mixer and mix for 5 minutes to obtain mixture one; It is melted and plasticized in a twin-screw extruder at 120°C for 1 min. The plasticized melt is fully infiltrated with the continuous glass fiber through the long glass fiber infiltration die. The infiltrated continuous glass fiber is cooled under cold air, fully dried, and then collected. volume;

[0053] (2) Weigh 66.8wt.% polypropylene, 15wt.% polyolefin elastomer (brand 8150, Dow), 2wt.% compatibilizer, 0.1wt.% primary antioxidant, 0.1wt.% The auxiliary antioxidant, 0.2wt.% light stabilizer, and 0.5wt.% lubricant were mixed to obtain the second mixture, which was mixed and added to the single-screw extruder for melting and plasticization, and the melting and plasticization temperature was 190 ~220℃, plasticizing time 2min;

[0054] After fully melted and plasticized, ...

Embodiment 2

[0056] (1) Weigh 10wt.% of thermoplastic polyurethane elastomer, 0.2wt.% of primary antioxidant, and 0.1wt.% of secondary antioxidant, put them in a high-speed mixer and mix for 5 minutes to obtain mixture one; It is melted and plasticized in a twin-screw extruder at 120°C for 1 min. The plasticized melt is fully infiltrated with the continuous glass fiber through the long glass fiber infiltration die. The infiltrated continuous glass fiber is cooled under cold air, fully dried, and then collected. volume;

[0057] (2) Weigh 51.8wt.% polypropylene, 15wt.% polyolefin elastomer (brand 8150, Dow), 2wt.% compatibilizer, 0.1wt.% primary antioxidant, 0.1wt.% The auxiliary antioxidant, 0.2wt.% light stabilizer, and 0.5wt.% lubricant were mixed to obtain the second mixture, which was mixed and added to the single-screw extruder for melting and plasticization, and the melting and plasticization temperature was 190 ~220℃, plasticizing time 2min;

[0058] After being fully melted and plasti...

Embodiment 3

[0060] (1) Weigh 15wt.% of thermoplastic polyurethane elastomer, 0.2wt.% of primary antioxidant, and 0.1wt.% of secondary antioxidant, put them in a high-speed mixer and mix for 5 minutes to obtain mixture one; It is melted and plasticized in a twin-screw extruder at 120°C for 1 min. The plasticized melt is fully infiltrated with the continuous glass fiber through the long glass fiber infiltration die. The infiltrated continuous glass fiber is cooled under cold air, fully dried and then collected volume;

[0061] (2) Weigh 46.8wt.% polypropylene, 15wt.% polyolefin elastomer (brand 8150, Dow), 2wt.% compatibilizer, 0.1wt.% primary antioxidant, 0.1wt.% The auxiliary antioxidant, 0.2wt.% light stabilizer, and 0.5wt.% lubricant were mixed to obtain the second mixture, which was mixed and added to the single-screw extruder for melting and plasticization, and the melting and plasticization temperature was 190 ~220℃, plasticizing time 2min;

[0062] After being fully melted and plastici...

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Abstract

The invention provides a glass fiber modified polypropylene composition with high impact resistance and high modulus and a preparation method thereof. The sum of the weight contents of the componentsis 100%, and the glass fiber modified polypropylene composition comprises 5-90% of polypropylene, 1-30% of a thermoplastic polyurethane elastomer, 1-90% of continuous glass fibers, 1-10% of a compatilizer, 0.1-2% of an antioxidant, and 0.2-2% of a light stabilizer. The method comprises the following steps of: (1) mixing the polyurethane elastomer, the light stabilizer and the antioxidant, meltingand plasticizing; infiltrating continuous glass fibers into the molten and plasticized mixture I, and cooling and drying the infiltrated continuous glass fibers; (2) mixing polypropylene, the compatilizer, the light stabilizer, the antioxidant and the polyolefin elastomer, melting and plasticizing; and (2) infiltrating the continuous glass fibers infiltrated in the step (1) in a mixture II subjected to melt plasticization, and drying to obtain the glass fiber modified polypropylene composition. The polypropylene composition provided by the invention has relatively high impact resistance and modulus.

Description

Technical field [0001] The invention relates to polypropylene and a composition thereof, in particular to a high-impact, high-modulus glass fiber modified polypropylene and a preparation method thereof. Background technique [0002] Glass fiber modified polypropylene has the advantages of low cost, high strength, high modulus, high heat resistance, etc., and is widely used in automobile structural parts and other bracket materials. However, due to the high modulus of glass fiber itself, brittle fracture, and poor interface bonding with polypropylene, the impact strength of such materials is usually low. In order to improve the impact performance of such materials, the commonly used method is to use high resistance Punching polypropylene resin or adding a certain proportion of elastomer to the matrix resin, this method improves the impact strength very significantly. However, since the elastomer is directly melted and mixed with the matrix resin and uniformly dispersed in it, oth...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L75/04C08L23/08C08L51/06C08K13/04C08K7/14
CPCC08L23/12C08L2205/02C08L2205/03
Inventor 张文勇石耀东姚威宇
Owner WANHUA CHEM GRP
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