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Composite material mold and manufacturing method thereof

A technology of composite materials and manufacturing methods, which can be applied to household appliances, other household appliances, household components, etc., can solve the problems of difficult laying, deformation of laying materials, high cost, etc., and achieve the effect of increasing working strength and good temperature resistance

Active Publication Date: 2018-09-14
TIANJIN ISTAR-SPACE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the composite material molds produced in the prior art still have the following problems: the temperature resistance level of the master mold is insufficient, and it is easy to collapse during the vacuum infusion process; the surface of the composite material mold is not beautiful, and the cost is high; Difficulty in laying layers; insufficient resin infusion due to material problems; internal stress caused by differences in expansion coefficients of different materials in stroke molds, resulting in dimensional deviations, cracks on the surface, and damage to the mold, etc.

Method used

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  • Composite material mold and manufacturing method thereof
  • Composite material mold and manufacturing method thereof
  • Composite material mold and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0055] The preparation of preparation example 1 master model

[0056] This preparation example is carried out in the following way:

[0057] (1) Weld a steel frame (model Q235) with a size of 6000*2500*10mm, make a steel frame and pile up steel bars (45#) on the steel frame to form a steel profile, and then conduct heat treatment at a temperature of 140°C 3 hours.

[0058] (2) Lay a wood plank layer with a thickness of 20mm on the steel profile to form a plank layer profile, thereby eliminating the gap between the steel frames;

[0059] (c) Adhere a polyurethane foam layer with a thickness of 200mm on the surface of the wooden board layer and rough machine it until the surface accuracy is about ±3mm to form a rough machined surface;

[0060] (d) Laying a FRP layer with a thickness of about 1mm on the foam surface to form a FRP layer surface; then polishing the FRP layer for roughening treatment, so that the surface roughness is above Ra3.2.

[0061] (e) Lay a layer of epoxy...

preparation example 2

[0063] It was carried out in substantially the same manner as in Preparation Example 1, except that the heat treatment was not performed.

preparation example 3

[0065] The method is basically the same as that of Preparation Example 1, except that the glass fiber reinforced plastic layer is not covered.

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Abstract

The invention relates to a composite material mold and a manufacturing method thereof. The method comprises the following steps: (i) paving a fiber surface felt on a female mold; (ii) paving a fiber woven fabric layer on the fiber surface felt; (iii) paving a sewed and woven fabric layer on the fiber woven fabric layer so as to obtain a paved prefabricated body; (iv) introducing pouring resin intothe paved prefabricated body through a vacuum pouring manner, and carrying out curing, post-treatment and de-molding to obtain the composite material mold. The invention further provides the composite material mold prepared by the method. The method provided by the invention has the advantages of low cost, small processing difficulty, short production period and the like; the prepared composite material mold has the advantages of good temperature resistance, high mold precision, light weight and the like; the problems of surface cracks, deformation and the like of a traditional composite material mold are overcome; the composite material mold has a great potential market in the fields of manufacturing aircrafts, vehicles and the like.

Description

technical field [0001] The invention relates to the field of composite material mold manufacturing, in particular to a composite material mold and a manufacturing method thereof. Background technique [0002] In recent years, aerospace, weapons, ships, high-speed rail and other industries have developed rapidly. Lightweight and low-carbon and high-efficiency are the themes of the development of the times. Composite materials replacing traditional metal materials are an important development direction for military-civilian and military-civilian integration. There are some insurmountable technical gaps in the development of large and complex composite components. The long development cycle is also a rigid obstacle to its expansion. The high cost of mold manufacturing has seriously affected the wide application of composite materials. [0003] In recent years, while the wave of wind power blades has gradually receded, the derived composite material mold (hereinafter sometimes r...

Claims

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Application Information

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IPC IPC(8): B29C33/38B29C70/36B29L31/08
Inventor 段轶锋
Owner TIANJIN ISTAR-SPACE TECH CO LTD
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