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Making method of heat-insulation anticorrosive polytetrafluoroethylene membrane

A technology of polytetrafluoroethylene and anti-corrosion film, which is applied in the fields of pipelines, polytetrafluoroethylene heat-insulating anti-corrosion film materials and their preparation, equipment heat-insulation and heat-insulation outer protection materials, pipe fittings, and detachable heat-insulation and heat-insulation sleeves, and can solve the problem of glass fiber reinforced plastics Poor aging resistance, high manufacturing cost, and no good solutions have been proposed to achieve the effects of ensuring surface compactness, improving peeling performance, and improving heat insulation effect

Inactive Publication Date: 2015-11-18
JIANGSU VEIK TECH & MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditionally used protective layers mainly include glass fiber reinforced plastics, plastics, aluminum alloy plates, stainless steel plates and other materials. Most of these materials need to be pre-customized according to the size of the pipe, and a waterproof layer must be installed inside. The manufacturing cost is high, transportation and installation are inconvenient, and the waterproof effect is poor. , easy to corrode, and its hardness is relatively high. After one installation and use, it is not conducive to disassembly and repeated use, and the aging resistance of FRP and plastic is poor, and the metal material is easy to corrode, and the service life is low
No good solution has been proposed yet

Method used

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  • Making method of heat-insulation anticorrosive polytetrafluoroethylene membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] ⑴The bottom layer is formed by dipping on one side. The PTFE bottom layer dispersion is proportioned by weight percentage: 10% PTFE emulsion with a solid content of 60%, 0.5% KH550 silane coupling agent, and 89.5% deionized water. Add PTFE emulsion, silane coupling agent and deionized water into the container, stir at a speed of 80 rpm, and stir until the components are evenly dispersed; add the PTFE bottom dispersion liquid into the trough of the impregnation equipment, and then pour the glass with a thickness of 0.2mm The fiber cloth is wound on the transmission shaft of the impregnation equipment, and then half-wrapped on the impregnation roller in the trough, so that one side of the fiber cloth is in contact with the PTFE bottom layer dispersion liquid for single-side impregnation treatment, and the thickness of the bottom layer is controlled by the thickness adjustment roller. Enter the oven, pass through the first and second zones of the oven in turn, the oven is ...

Embodiment 2

[0029]⑴The bottom layer is formed by dipping on one side. The PTFE bottom layer dispersion is proportioned by weight percentage: 20% PTFE emulsion with a solid content of 60%, 0.8% KH550 silane coupling agent, 1% JTW titanate coupling agent, and 78.2% deionized water. Add PTEE emulsion, coupling agent and deionized water into the container, stir at a speed of 80 rpm, and stir until the components are evenly dispersed; add the PTFE bottom dispersion liquid into the trough of the impregnation equipment, and then add the plain carbon fiber with a thickness of 0.2mm The fine cloth is wound on the transmission shaft of the impregnation equipment, and then half-wrapped on the impregnation roller in the trough, so that one side of the fiber cloth is in contact with the PTFE bottom layer dispersion liquid for single-side impregnation treatment, and the thickness of the bottom layer is controlled by the thickness adjustment roller. Oven, passing through the first and second zones of th...

Embodiment 3

[0030] ⑴The bottom layer is formed by dipping on one side. The PTFE bottom layer dispersion liquid is proportioned by weight percentage: 25% PTFE emulsion with a solid content of 60%, 0.2% KH550 silane coupling agent, 0.3% JTW18 aluminate coupling agent, and 74.5% deionized water. Add the PTFE emulsion, coupling agent and deionized water into the container, stir at a speed of 80 rpm, and stir until the components are evenly dispersed; add the PTFE bottom dispersion liquid into the trough of the impregnation equipment, and then add the glass fiber with a thickness of 0.25mm The cloth is wound on the transmission shaft of the impregnating equipment, and then half-wrapped on the impregnating roller in the trough, so that one side of the fiber cloth is in contact with the PTFE bottom layer dispersion liquid for single-side impregnation treatment, and the impregnation thickness of the bottom layer is controlled by the thickness adjusting roller, and then enters Oven, passing throug...

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Abstract

The invention discloses a making method of a heat-insulation anticorrosive polytetrafluoroethylene membrane. The making method is characterized in that the heat-insulation anticorrosive polytetrafluoroethylene (called PTFE for short) membrane is produced through coating a coating layer material mainly comprising PTFE resin on single side of a fiber cloth, and the method comprises the following steps: carrying out single side dipping on the fiber cloth in a PTFE bottom layer dispersion liquid through a dipping device, drying, baking to obtain a bottom coating layer, coating a PTFE structure layer slurry on the surface of the bottom coating layer through a coating device, drying, baking to obtain a structure coating layer, carrying out single side dipping on the structure coating layer in a PTFE surface layer dispersion liquid through the dipping device, drying, baking, and sintering to form a surface coating layer in order to make the required heat-insulation anticorrosive PTFE membrane. The membrane can be used for making heat insulation sleeves of detachable pipelines, valves and other pipe fittings, mechanical devices and instruments, and can also be used for making heat insulation layer outer protection materials of the pipelines, valves and other pipe fittings, mechanical devices and instruments.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a polytetrafluoroethylene heat-insulating and anti-corrosion film material and a preparation method thereof, which are mainly applied to detachable heat-insulating sleeves, pipes, pipe fittings, and external protective materials for heat-insulating and heat-insulating equipment. Background technique [0002] In pipe fittings where hot and cold media flow, such as elbows, flanges, valves, instruments, and thermal parts of equipment such as rubber and plastic extruders, injection machines, thermal power nuclear power steam turbine units, etc., conventional insulation methods cannot be used, and detachable insulation sleeves are used. , the insulation cover is composed of an insulation inner core and a protective jacket. The protective jacket is generally made of glass fiber cloth or glass fiber cloth coated with silicone rubber fabric. The glass fiber cloth has poor ...

Claims

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Application Information

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IPC IPC(8): B32B5/02B32B27/12B32B27/04B32B27/30B32B27/18B32B37/24B32B38/08B32B38/16
CPCB32B5/02B32B27/08B32B27/12B32B27/18B32B27/30B32B37/24B32B38/08B32B38/164B32B2037/243B32B2260/046
Inventor 李维伟
Owner JIANGSU VEIK TECH & MATERIALS CO LTD
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