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Molded article and molding material

A technology of molding materials and molded products, applied in the direction of coating, etc., can solve the problems of insufficient consideration of the characteristics of polyphenylene sulfide resin, processability, and insufficient tensile strength of composite materials, and achieve excellent productivity and tensile strength excellent effect

Active Publication Date: 2016-06-15
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the resin properties and processability of polyphenylene sulfide as the matrix resin have not been considered, and the tensile strength of the obtained composite material is insufficient to replace metal materials

Method used

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  • Molded article and molding material
  • Molded article and molding material
  • Molded article and molding material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0126] Examples are shown below to describe the present invention more specifically. First, the evaluation method used in the present invention is as follows.

[0127] (1) Tensile strength per strand of reinforcing fiber (A)

[0128] The tensile strength per strand was determined in the following procedure in accordance with the resin-impregnated strand test method of JIS R7608 (2007) using the reinforcing fiber bundle composed of the reinforcing fiber (A).

[0129] As the resin composition, "Serokiside (registered trademark)" 2021P (manufactured by Daicel Chemical Industry Co., Ltd.) / boron trifluoride monoethylamine (manufactured by Tokyo Chemical Industry Co., Ltd.) / acetone=100 / 3 / 4 (parts by mass), As curing conditions, normal pressure and 130 degreeC were performed for 30 minutes. Ten strands of the reinforcing fiber bundle were measured, and their average value was defined as the tensile strength per strand.

[0130] (2) Number-average fiber length of reinforcing fibers...

reference example 1

[0252] The reinforcing fiber bundle composed of the reinforcing fiber (A) is continuously pulled out, immersed in an aqueous surface treating agent mother solution containing 2% by mass of the surface treating agent, and then heated and dried at 230° C. Reinforcing fiber (A) of the agent. The reinforcing fiber (A) is referred to as CF-1, and the reinforcing fiber (A) obtained by using SZ-1 as the surface treating agent and to which the surface treating agent is attached is referred to as CF-3. In CF-3, the adhesion amount of SZ-1 after drying was 1 mass part with respect to 100 mass parts of CF-1.

reference example 2

[0254] A reinforcing fiber (A) to which a surface treatment agent was adhered was obtained in the same manner as in Reference Example 1 except that the surface treatment agent was replaced with SZ-2. The obtained reinforcing fiber (A) to which the surface treatment agent was adhered was referred to as CF-4. In CF-4, the adhesion amount of SZ-2 after drying was 1 mass part with respect to CF-1100 mass parts.

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Abstract

Provided are: a molded article including 10%-40% by mass reinforcing fibers (A) and 60%-90% by mass matrix resin (B) having as the main component thereof a polyarylene sulphide; and a molding material for obtaining same. The molded article fulfils conditions (I)-(IV) and has a tensile strength in the primary orientation direction of the reinforcing fibers (A) in the molded article of at least 240 MPa. (I) The strand tensile strength of the reinforcing fibers (A) is 1.5-5.5 GPa; (II) the number-average fiber length of the reinforcing fibers (A) is 0.4-10 mm; (III) the tensile elongation of the matrix resin (B) is 1.5%-10%; and (IV) the interfacial shear strength between the reinforcing fibers (A) and the matrix resin (B) is at least 20 MPa.

Description

technical field [0001] The present invention relates to molded articles comprising polyarylene sulfide and reinforcing fibers, and more particularly to molded articles comprising polyarylene sulfide and reinforcing fibers having improved mechanical properties, especially tensile elongation, suitable for obtaining by injection molding moldings, and the molding materials used to obtain it. Background technique [0002] A molded article using a fiber-reinforced resin composition composed of a thermoplastic resin and reinforcing fibers not only takes advantage of the characteristics of thermoplastic resins to facilitate molding processing, but also does not require storage loads like thermosetting resins, and is characterized by excellent cycleability. Such molded articles are known in various forms, such as thermoplastic prepregs in which reinforcing fibers are arranged in a sheet form, pellets in which reinforcing fibers are randomly dispersed, and the like. Molded products m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/04B29C70/06B29K81/00B29K105/12
CPCB29C70/14C08K2201/004C08K7/06C08K9/04C08L81/04B29B15/10B29K2995/0077B29K2507/04B29K2281/04B29C45/0001C08L81/00
Inventor 今井直吉佐野健太郎猪濑启介
Owner TORAY IND INC
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