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Resin composition for molding materials, molded body, and method for producing resin composition for molding materials

A resin composition and a manufacturing method technology are applied in the manufacturing field of resin compositions for molding materials, moldings and resin compositions for molding materials, which can solve the problems of adhesion to peripheral parts and the like, and achieve the effect of suppressing atomization

Active Publication Date: 2021-10-15
SEIKO PMC CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] When fiber-reinforced resins containing plant fibers such as wood powder or bast as reinforcing materials are used for automotive parts, etc., volatile components such as organic acids contained in plant fibers will be caused to adhere to peripheral parts. phenomenon, which becomes a problem

Method used

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  • Resin composition for molding materials, molded body, and method for producing resin composition for molding materials
  • Resin composition for molding materials, molded body, and method for producing resin composition for molding materials
  • Resin composition for molding materials, molded body, and method for producing resin composition for molding materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0126] Hereinafter, examples of the present invention will be described. In addition, this invention is not limited to these Examples. In addition, unless otherwise specified, "part" means a "mass part".

[0127] [Measurement method of physical properties]

[0128] The measurement methods of physical properties used in these examples are as follows.

[0129] Calculation of the fixation rate of acid anhydride on plant fiber

[0130] In the case of chemically modifying plant fibers with an acid anhydride, the fixation rate on plant fibers is calculated from the following formula.

[0131] Fixation rate (%)=(dry weight of modified plant fiber-dry weight of plant fiber) / (dry weight of plant fiber)×100

[0132] In addition, the dry weight of the modified plant fiber was measured by the following method. 100 times the quality of tetrahydrofuran was added to the total amount of modified plant fibers obtained by the method of Manufacturing Example 1 to prepare a dispersion liqui...

manufacture example 1

[0142] The solid content of 500 mass parts of packing into the clean container is the conifer bleached kraft pulp (NBKP) of 20 mass % and the N-methylpyrrolidone (NMP) of 150 mass parts, removes water by decompression, then drops into 19.9 mass parts Parts of hexadecenyl succinic anhydride, and reacted at 80°C for 4 hours. After the reaction, NMP was distilled off under reduced pressure to obtain modified cellulose fibers (A-1). The fixing rate of hexadecenyl succinic anhydride was 8.6%.

[0143] [Manufacture of resin composition 1]

Embodiment 1

[0145] 25 parts of modified cellulose fibers (A-1), 75 parts of commercially available polypropylene resin (PP resin) (B, NOVATEC MA04A manufactured by Nippon Polypropylene Co., Ltd.), and 4 parts of Amino group compound (C-1, CARBODILITE HMV-15CA manufactured by Nisshinbo Chemical Co., Ltd.) was used as a compound having reactivity with carboxyl group using LABO PLASTOMILL (Toyo Seiki Manufacturing Co., Ltd.), which is one of the kneaders. production) and melt-kneaded at 170°C to obtain a resin composition (D-1). Modified cellulose fibers (A-1) are opened to nanofibers and dispersed in polypropylene resin (B) ( figure 1 ).

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PUM

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Abstract

A resin composition for molding materials contains (A) plant fibers, (B) a thermoplastic resin and (C) a compound that is reactive with a carboxy group.

Description

technical field [0001] The present invention relates to a resin composition for molding materials suitable for use as a molding (molding) material, a molded article thereof, and a method for producing the resin composition for molding materials. [0002] This application claims priority based on Japanese Patent Application No. 2019-092856 filed in Japan on May 16, 2019, and uses the content thereof here. Background technique [0003] Conventionally, carbon fibers, glass fibers, and the like have generally been widely used as reinforcing materials (reinforcing materials) for resins for molding materials. However, since carbon fibers are difficult to burn, they are not suitable for heat recovery and are expensive. In addition, although glass fiber is relatively cheap, there is a waste problem in heat recovery. In addition, since all of them have high density compared with resins, there is also a problem that sufficient weight reduction cannot be expected when applied to appl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/00C08K5/16C08K7/02
CPCC08K7/02C08J5/045C08J2323/12C08J2323/02C08L23/12C08K5/353C08K5/1515C08K5/29C08L1/02C08L33/24C08K7/08
Inventor 横井裕明堀口萌恵纳谷蓝子
Owner SEIKO PMC CORP
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