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A kind of manufacturing method of high temperature resistant glass fiber reinforced plastic mold

The technology of a glass fiber reinforced plastic mold and a manufacturing method, which is applied in the field of aviation material composite materials, can solve the problems of high cost of metal molds, too large difference in thermal expansion coefficients of materials, and high cost, and solve the problems of high temperature resistance, high cost, satisfactory temperature resistance, and high cost. low cost effect

Active Publication Date: 2016-02-24
SHAANXI AIRCRAFT CORPORATION
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Problems solved by technology

The molding temperature of a large aviation composite part is up to 130°C. When ordinary epoxy resin plastic sand molds are used for molding, when the temperature exceeds 100°C, the mold will bulge, crack, and deform seriously, which cannot meet the requirements of high-temperature molding at all. ;The cost of using metal material molds is quite high for large parts, and due to the large difference in thermal expansion coefficients of materials, the size deviation of parts is large, which directly affects assembly; in addition, metal molds are not only expensive, but also heavy and difficult to handle

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  • A kind of manufacturing method of high temperature resistant glass fiber reinforced plastic mold

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Embodiment Construction

[0020] The present invention is described in further detail below.

[0021] A method for manufacturing a high-temperature-resistant glass fiber reinforced plastic mold, based on glass fiber-reinforced polymer-based composite material technology, comprising the following steps:

[0022] The first step: prepare the glue solution for FRP mold making. The formula is shown in Table 1. When preparing the glue, first preheat the F51 resin to 60°C-80°C, after the resin is completely softened, add 2-ethyl, 4-methylimidazole, and stir well. (The glue preparation materials are all commercially available)

[0023] Table 1 Resin Glue Formula for Mold Making

[0024]

[0025] The second step: FRP mold forming (for example: concave mold). Calculate the required glue solution according to the glue content of 68%. On the transition mold coated with the liquid release agent CHEMLEASEPMR (the transition mold selects the appropriate material according to the demoulding temperature, such a...

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Abstract

The invention belongs to the field of aviation material composite materials, in particular to a method for manufacturing a high-temperature-resistant glass fiber reinforced plastic mold. Using glass fiber reinforced polymer-based composite material technology, the manufacturing problem of large-scale composite material parts forming tooling is solved, and a glass fiber reinforced plastic forming mold that meets the cost and use requirements is manufactured. The invention proposes a 160°C low-cost FRP mold that can be solidified and demolded at 100°C, so that the rigidity and temperature resistance of the mold can meet the requirements of use, and the cost is low, the weight is light, and it can be used repeatedly. It solves the technical problems of high temperature resistance and high cost of forming molds for large-scale aviation composite materials.

Description

technical field [0001] The invention belongs to the field of aviation material composite materials, in particular to a method for manufacturing a high-temperature-resistant glass fiber reinforced plastic mold. Background technique [0002] Forming molds for composite parts usually need to select suitable materials for processing and manufacturing according to comprehensive factors such as forming temperature, number of uses, and cost. Commonly used materials include wood, gypsum, epoxy resin mortar, glass fiber reinforced plastic, steel and so on. The molding temperature of a large aviation composite part is up to 130°C. When ordinary epoxy resin plastic sand molds are used for molding, when the temperature exceeds 100°C, the mold will bulge, crack, and deform seriously, which cannot meet the requirements of high-temperature molding at all. The cost of using metal molds is quite high for large parts, and the large difference in thermal expansion coefficients of materials le...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/34B29C70/54
CPCB29C33/3842B29C70/34B29C2033/385
Inventor 郭绍华殷立新段正才潘文进黄智勇王翀邱航波欧文冉安国胡清乔艳孙晓春赵清清王文全
Owner SHAANXI AIRCRAFT CORPORATION
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