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Method for molding composite material and device for molding composite material

A composite material and forming mold technology, which is applied in the field of composite material forming and composite material forming device, can solve problems such as reducing suction force, and achieve the effect of improving mechanical properties

Pending Publication Date: 2019-12-13
NISSAN MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a result, there is a possibility that the suction force of the exhaust gas is reduced, or the amount of resin in the cavity is insufficient, and a resin-unimpregnated portion may occur in the reinforcing base material.

Method used

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  • Method for molding composite material and device for molding composite material
  • Method for molding composite material and device for molding composite material
  • Method for molding composite material and device for molding composite material

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Embodiment Construction

[0029] Embodiments of the present invention will be described below with reference to the accompanying drawings. In addition, the following description does not limit the scope of protection described in a claim, and the meaning of a term. In addition, the dimensional ratios of the drawings are exaggerated for convenience of description, and may differ from actual ratios.

[0030] (composite material)

[0031] The composite material 10 is composed of a reinforcing base material 11 and a resin 12 . By combining the reinforcing base material 11 and the resin 12 , it has higher strength and rigidity than a molded article composed of the resin 12 alone. An example of composite material 10, reinforcing base material 11 and resin 12 is shown in Figure 3A ~ Figure 3E and Figure 4 .

[0032] The resin 12 can be made of, for example, thermosetting resins such as epoxy resins and phenolic resins, or thermoplastic resins.

[0033] The reinforcing base material 11 can be constitut...

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Abstract

Provided are a method for molding a composite material and a device for molding a composite material with which the occurrence of a void in a composite material is reduced to enable an improvement inthe mechanical characteristics or appearance quality of the composite material. According to a method for manufacturing a composite material (10), a sealing region (270) including a cavity (250) in which a reinforcing base material (11) is arranged and an outer peripheral region (260) communicating with an outer periphery of the cavity is air-tightly sealed by means of a first sealing member (310). Then, an operation of suctioning gas from the outer peripheral region to exhaust the gas inside the sealing region is started, and a resin (12) is injected into a part of the cavity. Next, a moldingmold (200) is clamped to press and fill the resin in the cavity, while a space between the cavity and the outer peripheral region is liquid-tightly sealed by means of a second sealing member (320). After that, the operation of suctioning the gas from the outer peripheral region is stopped.

Description

technical field [0001] The invention relates to a forming method of composite material and a forming device of composite material. Background technique [0002] In recent years, composite materials in which a resin is impregnated with a reinforcing base material have been used as auto parts to reduce the weight of automobile bodies. As a molding method for composite materials, the RTM (Resin Transfer Molding) molding method suitable for mass production has attracted attention. [0003] In the RTM molding method, first, a reinforcing base material is arranged in a cavity in a molding die, and the gas in the cavity is exhausted through an exhaust port to bring it into a depressurized (approximately vacuum) state. Then, resin is injected into the mold cavity, the resin is impregnated into the reinforcing base material, and the resin is cured to form a composite material. By reducing the pressure in the cavity before injecting the resin into the cavity, the resin can be easily...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C39/42B29C39/10B29C39/24B29K105/08
CPCB29C39/10B29C39/24B29C39/42B29C70/48B29C33/0038B29C39/44B29C2791/006B29K2063/00
Inventor 大槻晃久臼井胜宏
Owner NISSAN MOTOR CO LTD
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