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Process for manufacturing integral molding epoxy glass fibre laminated insulating joint pad

A technology of epoxy glass fiber and insulating joints, which is used in household components, applications, household appliances, etc., can solve the problems of loss of insulation, high cost, and reduced impermeability of insulating gaskets, and achieve the effect of satisfying electrical insulation.

Active Publication Date: 2009-07-22
SHENYANG YONGYE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Ordinary laminated epoxy glass fiber cloth board (such as 3240 epoxy glass fiber cloth board) manufacturing process, the cloth board is 1200×2000mm, using this specification of cloth board to make gasket parts requires machining and compactness Processing, the process of processing is complicated and the cost is high. For gaskets with a diameter greater than 1200mm, lap joints are required due to plate width restrictions, resulting in failure to meet the requirements of electrical insulation, mechanical strength, surface shape tolerance and leak resistance at the lap joints; The manufacturing process of ordinary laminated epoxy glass fiber laminated cloth is produced by the traditional pre-impregnation process. The material contains a large number of micro-air gaps, and the impermeability is reduced under high-pressure conditions. A seal failure occurs and the insulating gasket loses its insulation

Method used

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  • Process for manufacturing integral molding epoxy glass fibre laminated insulating joint pad
  • Process for manufacturing integral molding epoxy glass fibre laminated insulating joint pad

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Embodiment Construction

[0015] The manufacturing process of integrally molded epoxy glass fiber laminated insulating joint gasket is as follows:

[0016] 1) Manufacturing mold: The mold is composed of positioning guide posts, upper mold, middle mold, and lower mold. On the upper surface of the middle mold, there are resin overflow grooves and 8 evenly distributed exhaust through holes, and 16 resin injections. Channel, install the positioning guide post in the middle hole of the lower mold, install the middle mold on the lower mold, install the upper mold on the middle mold and the positioning guide post; 16 resin injection channels, resin grease storage tanks and injection equipment to form resin Injection system; mold is designed according to the size of insulating joint gasket;

[0017] 2) Cut each layer of fiber: cut according to the size of the cavity of the mold;

[0018] 3) Apply mold release agent: Use polyvinyl alcohol and silicone oil. When the mold is heated to 100-120°C, apply PVA twice on th...

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Abstract

The invention provides a process for manufacturing a laminated insulating joint spacing piece by integrally moulding epoxy glass fibers, which relates to improvement of the process for manufacturing epoxy glass fiber laminated cloth, and comprises the following steps: 1) manufacturing a mould; 2) cutting fibers of each layer; 3) coating a mold release agent; 4) laying each fiber layer in the mould; 5) mixing epoxy resin and a curing agent, and degassing; 6) injecting glue; and 7) pressure forming and curing. The process has the advantages that the dimension of a gasket can be ensured by the dimension of the mould without lapping because of the adoption of mould forming, the micro air gap of the final product is reduced because of the adoption of a degassing process, and the requirements on electric insulation, mechanical strength, surface form and position tolerance and leak resistance are satisfied.

Description

Technical field: [0001] The invention relates to the improvement of the manufacturing process of epoxy glass fiber laminated insulating joint gasket. Background technique: [0002] Ordinary laminated epoxy fiberglass cloth board (such as 3240 epoxy fiberglass cloth board) manufacturing process, the fabric board is 1200×2000mm, and the use of this specification cloth board to make gasket parts requires mechanical processing and compactness The processing and processing procedures are complicated and costly. For gaskets with a diameter greater than 1200mm, overlap is required due to the limitation of the plate width, so that the overlapped parts cannot meet the requirements of electrical insulation, mechanical strength, surface tolerance and leakage resistance; The manufacturing process of ordinary laminated epoxy glass fiber laminated cloth board is produced by the traditional pre-impregnation process. The material contains a large amount of micro air gaps, and the impermeability ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/34B29C70/54B29K63/00B29K309/08B29L31/00
Inventor 李家凤王岩
Owner SHENYANG YONGYE IND
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