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Method for preparing and using fiber-reinforced hat-shaped rib molding soft mold

A fiber-reinforced, forming mold technology, applied in the field of composite material forming, can solve the problems of Airpad rubber soft mold being time-consuming and laborious, having to be re-prepared in time, prone to breakage, etc., to avoid breakage problems, improve reusability, and facilitate The effect of passing

Active Publication Date: 2017-01-11
AVIC BASIC TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the molding temperature and pressure of the composite wallboard are generally high, this has a great impact on the strength of the Airpad soft rubber mold. After the resin is cured, it has strong adhesion to the Airpad rubber soft mold. , this kind of Airpad rubber soft mold is very easy to break, and it takes time and effort to clean the Airpad rubber soft mold remaining inside the "cap" shaped rib; Even if there is no fracture during the molding process, it is easy to produce large deformation, which will affect the reuse, which will have an adverse impact on the low-cost production of "hat" type reinforced composite wall panels

Method used

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  • Method for preparing and using fiber-reinforced hat-shaped rib molding soft mold
  • Method for preparing and using fiber-reinforced hat-shaped rib molding soft mold

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Effect test

Embodiment 1

[0023] according to figure 1 The inner profile surface 1 of the "cap" rib shown in the figure is designed in the soft molding mold 2 of the "hat" rib, and the unvulcanized rubber matrix 3 and the unidirectional fiber reinforcement 4 adopt the sandwich blending method, and the "hat" rib Lay 3 layers of unvulcanized rubber 3 in the molding die 2 of the strip soft mold, and lay unidirectional carbon fiber reinforcements with a width of 3 mm and a length of 200 mm on the surface of the unvulcanized rubber 3 at intervals of 10 mm. The length and direction of the hat-shaped ribs are consistent, and the unidirectional carbon fiber reinforcements are spliced ​​along the 0° direction. Lay 2 layers of unvulcanized rubber 3, such as Image 6 As shown, after encapsulation, vacuuming, and vulcanization, a carbon fiber-reinforced "cap" type rib forming soft mold 5 is obtained;

[0024] Put the "cap" type reinforced composite wall panel structure preform 6 between the rigid female mold 7 a...

Embodiment 2

[0026] according to figure 1 The inner profile surface 1 of the "cap" rib shown in the figure is designed in the soft molding mold 2 of the "hat" rib, and the unvulcanized rubber matrix 3 and the unidirectional fiber reinforcement 4 are interlayer blended. A layer of unvulcanized rubber 3 is laid in the strip soft mold forming mold 2, and unidirectional glass fiber reinforcements with a width of 3 mm are laid on the surface of the unvulcanized rubber 3 at intervals of 15 mm. The length and direction of the "shaped ribs are consistent, and the unidirectional glass fiber reinforcements are spliced ​​along the 0° direction. The non-collinear unidirectional glass fiber reinforcements are not spliced ​​at the same cross-sectional position of the "cap" rib forming soft mold 5, and then Lay a layer of unvulcanized rubber 3, and then lay unidirectional glass fiber reinforcements with a width of 3 mm on the surface of the unvulcanized rubber 3 at intervals of 10 mm and interlaced with ...

Embodiment 3

[0029] according to figure 1The inner profile surface 1 of the "cap" rib shown in the figure is designed in the soft molding mold 2 of the "hat" rib, and the unvulcanized rubber matrix 3 and the unidirectional fiber reinforcement 4 adopt the sandwich blending method, and the "hat" rib Lay two layers of unvulcanized rubber 3 in the molding die 2 of the strip soft mold, and lay unidirectional aramid fiber reinforcements with a width of 5 mm on the surface of the unvulcanized rubber 3 at intervals of 20 mm. The 0° direction of the unidirectional aramid fiber reinforcement is The length and direction of the "hat" ribs are consistent, and the unidirectional aramid fiber reinforcement is spliced ​​along the 0° direction, and the non-collinear unidirectional aramid fiber reinforcement is not in the same cross-sectional position of the "hat" rib forming soft mold 5 Splicing, and then laying two layers of unvulcanized rubber 3, packaging, vacuuming, and vulcanization to obtain aramid f...

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Abstract

The invention belongs to the composite molding technology, and relates to the improvement on the technology for preparing hat-shaped ribbed composite wall panel molding soft molds, in particular to a method for preparing and using a fiber-reinforced hat-shaped rib molding soft mold. A traditional pure rubber soft mold is improved, a unidirectional fiber reinforcement body is added in the soft mold in the rib length direction, and therefore the toughness, in the length direction, of the soft mold is increased, transmission of demolding tensile force is facilitated better, the problem of breakage of the fiber-reinforced hat-shaped rib molding soft mold in the demolding process is avoided, and the demolding efficiency is improved. The unidirectional fiber reinforcement body has a large limiting function on deformation, in the length direction, of the fiber-reinforced hat-shaped rib molding soft mold in the demolding process, the fiber-reinforced hat-shaped rib molding soft mold is not prone to being broken and damaged, restoring of deformation in the length direction is easy, the repeated use performance of the fiber-reinforced hat-shaped rib molding soft mold is improved, and the process cost is reduced.

Description

technical field [0001] The invention belongs to the molding technology of composite materials, and relates to the improvement of the preparation technology of the "hat" type reinforced composite material wall board forming soft mold, and in particular to a method for preparing and using a fiber reinforced "hat" type rib forming soft mold. Background technique [0002] The "hat" type reinforced composite wall panels have been widely used in various advanced models. At present, the "hat" type reinforced composite wall panels are usually prepared by combining rigid female molds and soft molds. Generally, it is a "cap" shell structure made of Airpad rubber. The advantage of this structure is that it can form a closed cavity through the vacuum bag and the rigid female mold during curing, meeting the pressure requirements for the "cap" ribs, and at the same time soft The mold rigidity is greater than that of the vacuum bag and the surface is smooth, which can better ensure that th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C33/40B29C33/42B29C70/44B29K19/00B29K307/04B29K309/08B29K277/00
CPCB29C33/405B29C33/42B29C70/44B29K2019/00B29K2277/10B29K2307/04B29K2309/08
Inventor 王海雷高艳秋李鸣阳
Owner AVIC BASIC TECH RES INST
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