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Manufacturing method for fibre-reinforced composite material, heat resistant material using said composite material, and heat resistant structural material using said composite material

一种复合材料、制造方法的技术，应用在纺织、织物等方向，能够解决长时间、不能成型、高耐热材料成型困难等问题

Active Publication Date: 2012-08-22
MITSUBISHI CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In the molding method using such a molding mold made of plaster, it is desirable to mold at 130°C or lower due to the heat resistance of the molding mold itself or auxiliary materials, and generally use a high-temperature curing prepreg that requires a molding temperature of 180°C or higher. Molding of high heat-resistant materials is difficult
In addition, if the high-temperature-curable prepreg is cured and molded at a low or medium temperature, it usually cannot be molded, or it takes a very long time, and there is a problem that a molded product with greatly reduced heat resistance is formed.
[0012] Therefore, attempts have been made to perform primary curing of high-temperature-curing prepregs in which curing agents and curing accelerators are added to resin compositions at low or medium temperatures, and then perform secondary curing at high temperatures, but mechanical properties cannot generally be avoided. , The reduction of heat resistance, even if the mechanical properties can be maintained, the reduction of heat resistance caused by the addition of curing agent and curing accelerator cannot be avoided

Method used

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  • Manufacturing method for fibre-reinforced composite material, heat resistant material using said composite material, and heat resistant structural material using said composite material
  • Manufacturing method for fibre-reinforced composite material, heat resistant material using said composite material, and heat resistant structural material using said composite material
  • Manufacturing method for fibre-reinforced composite material, heat resistant material using said composite material, and heat resistant structural material using said composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～12

[0107] By curing the resin compositions of Examples 1-12 with medium-temperature primary curing (8 hours at 120°C) and high-temperature secondary curing (200°C for 2 hours), a combination of high mechanical strength (resin bending physical properties) is obtained. ) and high heat resistance (DMA-Tg) cured resin (Table 1, Table 2, Table 3). In Example 2, the degree of curing at each temperature was measured. As a result, it was strong at 110°C for 6 hours, at 120°C for 3 hours, and at 130°C for 2 hours, and the degree of curing exceeded 50%. Even if heated for 12 hours, the degree of curing does not exceed 50% ( figure 2 , Table 7). Furthermore, in Example 7, a composite having both high mechanical strength (12K cloth composite bending properties) and high heat resistance (12K cloth composite DMA-Tg) was obtained (Table 4). In addition, in Example 7, a good molded article with little resin flow and few excess resin was obtained (Table 5). In addition, in Example 7, a good m...

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Abstract

A method for manufacturing a fibre-reinforced composite material with good mechanical properties and high heat resistance, such that a plaster mold can be used for initial curing. A fibre-reinforced prepreg obtained by impregnating reinforced fibres with an epoxy resin composition which contains a triphenylmethane type epoxy resin (A), N, N, N', N'-tetraglycidyl diaminodiphenylmethane (B), and diaminodiphenylsulfone (C), undergoes an initial curing at 110-130 DEG C and furthermore undergoes a second curing at a temperature not less than the temperature of the initial curing.

Description

technical field [0001] The present invention relates to a method of manufacturing fiber reinforced composite materials. In particular, the present invention relates to a method for producing a fiber-reinforced composite material suitable for use as a heat-resistant profile and a heat-resistant structural material, and a heat-resistant profile and a heat-resistant structural material obtained by the production method. Background technique [0002] As one of the molding methods of fiber-reinforced composite materials, there is a method of using a prepreg in which reinforcing fibers are impregnated with a matrix resin mainly composed of a thermosetting resin, and it is used in a wide range of applications from sports and leisure related applications to aircraft applications the use of. Furthermore, molding of a fiber-reinforced composite material using an intermediate base material formed of the above-mentioned prepregs is performed by laminating the prepregs and then heating ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/04B29C70/06C08G59/50
CPCC08G59/3218C08G59/3227C08G59/504C08J2363/00C08L63/00Y10T442/2631C08J5/244C08J5/249C08J5/243C08L2666/22
Inventor 三浦铁平金子学
Owner MITSUBISHI CHEM CORP
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