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Fabric and molded article formed by molding same

A fabric and square technology, applied in the direction of fabrics, textiles, papermaking, textiles, etc., can solve the problems of being unable to remelt and form, and achieve the effects of excellent appearance, excellent formability, and high mechanical strength

Active Publication Date: 2015-11-04
MITSUBISHI GAS CHEM CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, products using thermosetting resins have a fundamental disadvantage that they cannot be remelted and molded

Method used

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  • Fabric and molded article formed by molding same
  • Fabric and molded article formed by molding same
  • Fabric and molded article formed by molding same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0133] Examples are given below to describe the present invention more specifically. Materials, dosages, ratios, processing contents, processing steps, etc. shown in the following examples can be appropriately changed within the scope not departing from the gist of the present invention. Therefore, the scope of the present invention is not limited to the specific examples shown below.

[0134] 1. Manufacture of polyamide resin fiber

[0135]

[0136] As the polyamide resin, the polyamide resin obtained in the following production examples and the following commercially available hexamethylene isophthalamide resin (MXD6) were used.

[0137] · Hexamethylene diamide isophthalamide resin

[0138] MXD6: Hexamethylene isophthalamide resin (manufactured by Mitsubishi Gas Chemical Co., Ltd., grade S6007), number average molecular weight 25,000, content of components with a molecular weight of 1,000 or less is 0.51% by mass

manufacture example 1

[0140] (Synthesis of polyamide (MPXD10))

[0141] After heating and dissolving sebacic acid in a reaction vessel under a nitrogen atmosphere, while stirring the contents, slowly increase the molar ratio of diamine to sebacic acid to about 1:1 under pressure (0.35Mpa). The temperature was raised to 235 degreeC, dropping the mixed diamine whose molar ratio of p-xylylenediamine (made by Mitsubishi Gas Chemical Co., Ltd.) and m-xylylenediamine (made by Mitsubishi Gas Chemical Co., Ltd.) was 3:7. After completion of the dropwise addition, the reaction was continued for 60 minutes, and the amount of components having a molecular weight of 1,000 or less was adjusted. After completion of the reaction, the contents were taken out into strands and pelletized with a pelletizer to obtain polyamide (MPXD10). Hereinafter referred to as "MPXD10".

manufacture example 2

[0143] (Synthesis of polyamide (PXD10))

[0144] In a reaction vessel with an internal volume of 50 liters equipped with a stirrer, a partial condenser, a cooler, a thermometer, a dropping device, a nitrogen inlet pipe, and a strand die, weigh and drop into accurately weighed sebacic acid (Ito Co., Ltd. 8950 g (44.25 mol) of Sebacic acid TA (product name, Sebacic acid TA) manufactured by Yu Corporation, 12.54 g (0.074 mol) of calcium hypophosphite, and 6.45 g (0.079 mol) of sodium acetate. After the inside of the reaction vessel was sufficiently replaced with nitrogen, the pressure was increased to 0.4 MPa with nitrogen, and the temperature was raised from 20° C. to 190° C. while stirring, and the sebacic acid was uniformly melted over 55 minutes. Next, 5960 g (43.76 mol) of p-xylylenediamine (manufactured by Mitsubishi Gas Chemical Co., Ltd.) was added dropwise over 110 minutes while stirring. Meanwhile, the internal temperature of the reaction container was continuously rai...

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Abstract

Provided is a fabric that exhibits excellent mechanical strength and shaping properties. In the fabric, one of the warp and the weft is a polyamide resin fiber comprising a polyamide resin composition, and the other is a continuous carbon fiber. The average fiber length of the continuous carbon fiber in a discretionary square portion of the fabric in which one side of the square is parallel to the warp and another side of the square is parallel to the weft is 1.1-1.6 times the length of one of the sides of the square. The polyamide resin composition comprises a polyamide resin in which 50 mol% or more of a diamine constituent unit is derived from a xylylenediamine, the number-average molecular weight (Mn) is 6,000-30,000, and the molecular weight of 0.5-5 mass% thereof is 1,000 or less.

Description

technical field [0001] The present invention relates to a fabric using specific polyamide resin fibers and continuous carbon fibers. Furthermore, it is related with the molded article which molded the said fabric. Background technique [0002] Fiber-reinforced resin-based composite materials that combine fiber materials and matrix resins are light in weight and high in rigidity, so molded products using them are widely used as mechanical parts, electrical / electronic equipment parts, vehicle parts / members, aerospace / Cosmic machine parts, etc. As the fiber material, carbon fibers are mainly used. [0003] On the other hand, thermosetting resins such as unsaturated polyester resins and epoxy resins are generally used as matrix resins from the viewpoint of mechanical strength, affinity with fiber materials, moldability, and the like. However, products using thermosetting resins have a fundamental disadvantage that they cannot be remelted and molded. [0004] Based on the a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D03D1/00C08G69/26D03D15/00D03D15/12
CPCD03D15/00C08G69/265D10B2101/12D10B2331/021D10B2505/02D10B2331/02D03D15/275D03D15/573D03D15/283D03D1/00
Inventor 松本信彦三田寺淳
Owner MITSUBISHI GAS CHEM CO INC