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Method for producing FRP

A manufacturing method and preform technology, which are applied in the field of FRP manufacturing, can solve the problems of insufficient impregnated resin, insufficient surface quality, etc.

Active Publication Date: 2013-09-25
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if the shape line of the flow front does not follow the desired shape, or if there is a part that is difficult for the flow front to reach, it is easy to cause insufficient impregnation resin (resin deficiency part, resin unimpregnated part), and there is a concern that the surface quality will be damaged. not good parts

Method used

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  • Method for producing FRP
  • Method for producing FRP
  • Method for producing FRP

Examples

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Embodiment Construction

[0043] Embodiments of the present invention will be described below with reference to the drawings.

[0044] figure 1 Shown is an example of an RTM molding apparatus for carrying out the method of the first aspect of the present invention. figure 1 Among them, the RTM molding device 1 has an upper mold 4 and a lower mold 5, the upper mold 4 and the lower mold 5 are used as the forming mold 3 for forming the mold cavity 2, and the upper mold 4 is closed and opened by a pressurizing mechanism 6. A preform 7 is arranged in the cavity 2, and the preform 7 is made of a laminated body of a reinforcing fiber base material, and is preformed into a predetermined shape, for example. With the preform 7 placed in the cavity 2, the upper mold 4 and the lower mold 5 are clamped facing each other, the resin for constituting the FRP is supplied from the resin supply passage 8, and the preform 7 is faced from the opposite side. The resin injection port 9 as a plurality of resin injection pas...

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Abstract

This method for producing FRP in which a pre-form made of a reinforced fiber base material is disposed within a cavity of a mold, a resin injection path and a suction path for suctioning at least air are provided to the mold, and resin from the resin injection path is made to flow in the direction toward the suction path within the cavity to impregnate the pre-form is characterized in that a high flow resistance region for partially preventing flow of the resin flowing through the pre-form is formed in the pre-form, and the flow front of the resin flowing in the direction toward the suction path through the high flow resistance region is controlled so as to settle within a permitted region that has been determined in advance with respect to the shape of the molded product. The present invention makes it possible to obtain a molded product of favorable quality with no air traps.

Description

technical field [0001] The present invention relates to a manufacturing method of FRP (Fiber Reinforced Plastic: Fiber Reinforced Plastic), and in particular to impregnating an injected resin into a preform made of a reinforced fiber base material by the RTM (Resin Transfer Molding: Resin Transfer Molding) method Improvement of the manufacturing method of FRP. Background technique [0002] The RTM method called the so-called RTM multi-point injection method is known. In this method, a preform made of a reinforcing fiber base material is placed in the cavity of a molding die, and the A plurality of resin injection ports opened on one side are injected with resin to impregnate the reinforcing fiber base material of the preform (for example, Patent Document 1). In addition, the RTM method called the so-called wire injection method is also known. In this method, a resin injection line extending along the end surface is provided on the end surface side of the preform, and the E...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C39/24B29C39/10B29K105/06
CPCB29C45/0046B29C70/48B29C70/548B29K2105/06B29C39/10B29C39/24B29C45/0005B29L2009/00
Inventor 山本晃之助辻诚司渡边和矢
Owner TORAY IND INC
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