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Silicone rubber composite rubber tube lined with polytetrafluoroethylene and manufacturing method thereof

A technology of polytetrafluoroethylene and composite rubber hose, which is applied in the direction of rubber layered products, laminated, layered products, etc., and can solve the problem of large thickness of polytetrafluoroethylene lined pipe, poor oil resistance, poor solvent resistance, and low sealing performance And other problems, to achieve the effect of improving the scope of use, low equipment cost, and perfect sealing

Active Publication Date: 2012-07-04
XIAMEN CHUANGXINYUAN RUBBER PROD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention has been accomplished in view of at least one of the above-mentioned problems, and an object of the present invention is to provide a silicone rubber composite hose manufacturing process with polytetrafluoroethylene as an inner liner, which can not only solve the problem of existing silicon rubber hoses The rubber tube has the characteristics of poor oil resistance and solvent resistance, and it can also solve the problems of large thickness and low sealing performance of the PTFE lined tube manufactured by the extrusion method

Method used

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  • Silicone rubber composite rubber tube lined with polytetrafluoroethylene and manufacturing method thereof
  • Silicone rubber composite rubber tube lined with polytetrafluoroethylene and manufacturing method thereof
  • Silicone rubber composite rubber tube lined with polytetrafluoroethylene and manufacturing method thereof

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Embodiment 1

[0020] Attached below Figure 1-2 The silicone rubber composite hose of the present invention and its manufacturing process will be described in detail.

[0021] A manufacturing process of a silicone rubber composite hose with polytetrafluoroethylene as an inner liner, comprising the following steps: performing plasma treatment on a polytetrafluoroethylene film strip 2; winding the polytetrafluoroethylene film strip 2 after plasma treatment on the On the mold core 1 of the required size, different layers can be wound according to needs; the glass tape 3 is wound on the outer layer of the polytetrafluoroethylene film tape 2, and then heated and shaped. After the shaping is completed, the glass tape 3 is removed to form a polytetrafluoroethylene inner layer. For the liner 4, evenly coat the surface of the tetrafluoroethylene liner 4 with sodium-naphthalene-tetrahydrofuran solution or directly immerse in the sodium-naphthalene-tetrahydrofuran solution; use alcohol and water to cl...

Embodiment 2

[0031] see figure 2 , a silicone rubber composite hose comprises from the inside to the outside in sequence: a polytetrafluoroethylene liner 4; a first silicone rubber layer 5; a reinforcing layer 6; and a second silicone rubber layer 5. Preferably, the reinforcing layer 6 may preferably include polyester fiber cloth, glass cloth, or carbon fiber cloth.

[0032] Preferably, the silicone rubber composite hose can be manufactured through the following manufacturing process. Specifically, 1 firstly, place the polytetrafluoroethylene film strip 2 in the plasma chamber, under the pressure of 100pa, the oxygen flow of 10L / min and the power of 350W, do plasma bombardment treatment for 3min; 2 place the polytetrafluoroethylene film after plasma treatment Belt 2 is wound on the mold core 1 of the required size, and different layers can be wound according to needs; after 3 is wound, a layer of glass tape 3 is wound on the outer layer of PTFE film tape 2, and then it can be heated in a...

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Abstract

The invention provides a silicone rubber composite rubber tube lined with polytetrafluoroethylene, comprising a polytetrafluoroethylene lining tube, a first silicone rubber layer, a reinforced layer and a second silicone rubber layer from inside to outside in sequence. The silicone rubber composite plastic tube solves the problems of low performance of the silicone rubber in oil resistance and solvent resistance, and greatly increases the use range of the silicone rubber tube. Additionally, the invention also provides a manufacturing method of the silicone rubber composite rubber tube, which improves the bonding property of the polytetrafluoroethylene lining tube with the silicone rubber by three methods, and comprises steps of: (1) performing plasma treatment to a polytetrafluoroethylene film belt; (2) tightly winding a layer of glass cloth on the outer surface of the polytetrafluoroethylene film belt after the polytetrafluoroethylene film belt is wound on a mould core so as to make the surface of the polytetrafluoroethylene film belt acquire the same textures to increase the surface area; (3) performing sodium-naphthalene-tetrahydrofuran solution to the outer surface of the shaped polytetrafluoroethylene lining tube to improve the surface polarity and the surface tension of the tube.

Description

technical field [0001] The invention provides a silicone rubber composite hose with polytetrafluoroethylene as an inner lining layer and a manufacturing process. The silicone rubber composite hose has the effects of high temperature resistance, low temperature resistance and solvent resistance. Background technique [0002] Silicone rubber has excellent properties such as excellent heat resistance, cold resistance, ozone resistance and atmospheric aging resistance, but due to its low oil resistance and solvent resistance, the scope of use of silicone rubber is largely limited. [0003] The prior art patent document ZL200510013565.4 discloses a preparation method of silicone rubber cloth and wrapped rubber hose, in which first the silicone cloth is cut according to the size required by the product with a cutting machine, and it is coated on the mandrel, and then Use cotton water cloth or plastic film to evenly cover the surface of the wrapped hose for vulcanization. The sili...

Claims

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Application Information

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IPC IPC(8): B32B1/08B32B17/02B32B17/10B32B25/10B32B27/12B32B27/16B32B27/30B32B27/36B32B37/06B32B37/10B32B38/16
Inventor 刘建辉
Owner XIAMEN CHUANGXINYUAN RUBBER PROD
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