Thin silicon rubber and fabric composite product and mold pressing vulcanizing forming process thereof

A composite product, molded vulcanization technology, which is applied in the field of thin silicon rubber-fabric composite products and its molded vulcanization process, which can solve the problems that it is difficult to ensure that the fabric is evenly placed in the middle of the rubber material, and achieve strict size control and consistent shrinkage , high-strength effect

Active Publication Date: 2017-07-18
HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process is suitable for the manufacture of regular-shaped and ultra-thin fabric-rubber products. For thicker and complex-shaped products, it is difficult to ensure that the fabric is evenly placed in the middle of the rubber and the product is not deformed.

Method used

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  • Thin silicon rubber and fabric composite product and mold pressing vulcanizing forming process thereof
  • Thin silicon rubber and fabric composite product and mold pressing vulcanizing forming process thereof
  • Thin silicon rubber and fabric composite product and mold pressing vulcanizing forming process thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] like image 3 , Figure 4 The silicone rubber-fabric composite finger cot product shown has an inner diameter of Φ26±0.1mm, a height of 28.1±0.1mm, a thickness of 1.1±0.1mm, and a fingertip spherical radius of 11±0.1mm. The skeleton fabric is placed between the inner and outer layers of silicone. The production process is as follows (1) Fabric degreasing: Soak the fabric in a stainless steel bucket filled with ethyl acetate solution for 24 hours and then take it out to dry; (2) Surface treatment: Configure 12% VTPS- Ethyl acetate solution, soak the degreased fabric in it for 2 hours and then take it out to dry; (3) Mucilage configuration: Weigh 200g of silicone rubber compound and soak it in 1000ml of gasoline for 12 hours, then stir it with a high-speed mixer , until the rubber is completely dissolved in gasoline; (4) Glue application: use a glass rod to evenly apply the glue on the fabric, dry it, cut it into a square skeleton fabric 4 of 80×80mm, and set aside; (5) ...

Embodiment 2

[0040] like Figure 5The silicon rubber-fabric composite finger cot product shown above requires an inner diameter of Φ21±0.1mm, a height of 25.8±0.1mm, a thickness of 0.8±0.1mm, and a fingertip spherical radius of 9±0.1mm. The process method is as follows (1) Fabric degreasing: Soak the fabric in a stainless steel bucket filled with ethyl acetate solution for 24 hours, then take the fabric out to dry; (2) Surface treatment: prepare 15% VTPS-ethyl acetate solution, soak the degreased fabric in it for 2 hours Take out the fabric to dry after 1 hour; (3) Glue configuration: Weigh 200g of silicone rubber compound and soak it in 1000ml of gasoline for 12 hours, then stir it with a high-speed mixer until the rubber is completely dissolved in gasoline; (4) Glue application: apply the glue evenly on the fabric with a glass rod, dry it, cut it into 70×70mm squares, and set it aside; (5) Silica gel preforming: weigh 1.6g of silica gel compound, place it at a height of 0.15 Put two pie...

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Abstract

The invention provides a thin silicon rubber and fabric composite product and a mold pressing vulcanizing forming process thereof. The thickness of the product is smaller than or equal to 1.2 mm. The mold pressing vulcanizing forming process comprises the following steps that (1) fabric degreasing is conducted; (2) surface treatment is conducted; (3) rubber cement preparation is conducted; (4) rubber coating is conducted; (5) silicon rubber preforming is conducted; (6) compositing is conducted, specifically, fabric is placed between two pieces of preformed silicon rubber, pressed and cut into a clover-shaped wafer with the corresponding diameter size; (7) mold preheating is conducted; (8) vulcanizing is conducted, specifically, a mold core is coated with the clover-shaped rubber wafer, and mold assembling, pressurizing and vulcanizing are conducted; (9) after being taken out from a vulcanizing machine, a mold is cooled; and (10) the product is taken out from a mold cavity and subjected to post vulcanizing for 4 h. According to the mold pressing vulcanizing forming process of the thin silicon rubber and fabric composite product, the silicon rubber and the fabric are subjected to mold pressing vulcanizing forming and are firmly connected, and the fabric is uniformly placed between the inner-layer silicon rubber and the outer-layer silicon rubber; demolding is conducted through cooling, the shrinkage rate of the silicon rubber is consistent with that of the fabric, and the product is strict in size control, not deformed and good in sealing performance; and the situation that the fabric is exposed and eccentric is avoided.

Description

technical field [0001] The invention relates to a thin silicon rubber-fabric composite product and its molding process of vulcanization. Background technique [0002] Extravehicular space suits are used under harsh conditions and require extremely high technical requirements. It not only requires resistance to space radiation and space debris, but also requires astronauts to be able to carry out various space scientific research activities in space at ultra-low temperatures (-120°C) after leaving the cabin. The extravehicular space suit gloves are an important part of the space suit, providing the astronauts with the ability to operate the hand and the necessary protective performance. In order to ensure that the hands of astronauts have a good touch after leaving the cabin and improve the work efficiency of astronauts working outside the cabin, finger cots are pasted on the top of the fingers of space suit gloves. The thickness of the finger cots is required to be ≤1.2mm a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/82B29C70/68B29C35/02
CPCB29C35/0227B29C70/683B29C70/82
Inventor 陈兵勇王凡魏荣梅王炜赵志祥宋丹隋琦
Owner HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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