Carbon-fiber reinforced polypropylene resin composition, molding material, and molded articles

A polypropylene resin and molding material technology, which is applied in the field of carbon fiber reinforced polypropylene resin materials, can solve problems such as heat resistance, deterioration, discoloration and mechanical properties, and achieve good interface adhesion, good flame retardancy and weather resistance, The effect of excellent mechanical properties

Active Publication Date: 2013-12-11
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in general, it is known that polypropylene resin is not heat-resistant and is a flammable resin.
In addition, it is also known that it is sensitive to the action of light, which causes deterioration, that is, discoloration or lowering of mechanical properties, and molded products based on polypropylene resin cannot withstand long-term use under conditions of significant light irradiation.
In particular, studies on imparting flame retardancy and weather resistance to carbon fiber-reinforced polypropylene resin compositions are insufficient.

Method used

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  • Carbon-fiber reinforced polypropylene resin composition, molding material, and molded articles
  • Carbon-fiber reinforced polypropylene resin composition, molding material, and molded articles
  • Carbon-fiber reinforced polypropylene resin composition, molding material, and molded articles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0122] Using the TEX-30α twin-screw extruder made by JSW (screw diameter 30mm, die diameter 5mm, barrel temperature 220°C, screw rotation speed 150rpm), the weight ratio (A) / (B)=85 / 15 A mixture obtained by mixing pellets of (A) polypropylene resin (Prime PolyproJ105G resin manufactured by Prime Polymer Co., Ltd.) and (B) maleic acid-modified polypropylene resin (ADMER QE840 manufactured by Mitsui Chemicals Co., Ltd.), ( D) Brominated flame retardant (Nonnen PR-2 manufactured by Maruhishi Petrochemical Co., Ltd.), (E) antimony trioxide (manufactured by Showa Chemical Co., Ltd.), (F) amino ether type hindered amine light stabilizer (Tinuvin 123 manufactured by BASF Japan Co., Ltd.), while degassing through the downstream vacuum vent, the molten resin was ejected from the die, and the resulting strand was cooled and then cut with a cutter to obtain melt-kneaded pellets.

[0123] In addition, using a long-fiber-reinforced resin pellet manufacturing device provided with a coating ...

Embodiment 2

[0131]Using a long-fiber-reinforced resin pellet manufacturing device provided with a coating die for molten resin at the discharge front end of a single-screw extruder, set the cylinder temperature of the extruder to 220°C, and supply a weight ratio of ( A) / (B)=85 / 15 for (A) polypropylene resin (Prime Polypro J105G resin manufactured by Prime Polymer Co., Ltd.) and (B) maleic acid-modified polypropylene resin (manufactured by Mitsui Chemicals Co., Ltd. ADMER QE840), (D) brominated flame retardant (Nonnen PR-2 manufactured by Maruhishi Petrochemical Co., Ltd.), (E) antimony trioxide (manufactured by Showa Chemical Co., Ltd.), ( F) Amino ether type hindered amine light stabilizer (Tinuvin 123 manufactured by BASF Japan Co., Ltd.) was melted at a screw speed of 200 rpm, and the (C) carbon fiber obtained in the reference example was supplied to the die (diameter 3 mm), the resin-coated tow is cooled, and cut into pellets with a length of 10 mm by a granulator, and the molding mat...

Embodiment 3

[0138] When dry-blending the melt-kneaded granules and the long-fiber granules, dry-blending is carried out so that the composition of (C) carbon fibers is 60 parts by weight relative to the total amount of the above-mentioned components (A) and (B) of 100 parts by weight, Other than that, molding evaluation was performed in the same manner as in Example 1. The evaluation results are summarized in Table 1.

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Abstract

The invention relates to a carbon-fiber reinforced polypropylene resin composition. The carbon-fiber reinforced polypropylene resin composition is obtained by blending 100 parts by weight of the total of (A) a polypropylene resin and (B) a modified polypropylene resin with 8 to 70 parts by weight of (C) carbon fiber, 0.4 to 25 parts by weight of (D) a brominated flame retardant, 0.2 to 12.5 parts by weight of (E) an antimony oxide compound, and 0.05 to 2 parts by weight of (F) an amino-ether type hindered amine light stabilizer. Thus, the present invention provides: a carbon-fiber reinforced polypropylene resin composition which combines excellent flame retardance, excellent weather resistance and excellent mechanical characteristics; a molding material; and molded articles.

Description

technical field [0001] The present invention relates to a carbon fiber reinforced polypropylene resin material, and more specifically relates to a carbon fiber reinforced polypropylene resin composition, a molding material and a molded product having particularly good flame retardancy and weather resistance, as well as excellent mechanical properties. Background technique [0002] Compositions composed of reinforcing fibers and thermoplastic resins are widely used in sporting goods, aerospace, and general industrial applications due to their light weight and excellent mechanical properties. The reinforcing fibers used in these fiber-reinforced thermoplastic resin compositions are metal fibers such as aluminum fibers or stainless steel fibers, organic fibers such as aramid fibers, inorganic fibers such as silicon carbide fibers, or carbon fibers. From the viewpoint of the balance of properties, carbon fibers are preferred, and among them, polyacrylonitrile-based carbon fibers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/10C08K7/02C08K13/02
CPCC08K7/02C08K13/02C08L23/10C08K3/2279C08K5/0066C08K5/3435C08K7/06C08L51/06C08L51/003C08L23/26C08K3/22C08K5/17C08J5/00
Inventor 本桥哲也西村透森山匡洋三辻祐树三好且洋
Owner TORAY IND INC
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