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Preparation and application methods of high-temperature resistant nonstick cloth

An application method, non-stick cloth technology, applied in textiles, papermaking, carbon fiber, etc., can solve the problems of phenolic resin infiltrating and sticking to the mold, remaining on the upper and lower molds, and dents on the surface of the product, so as to achieve easy demoulding, resource saving, smooth surface effect

Inactive Publication Date: 2017-04-05
扬州东润新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the process of making carbon fiber thermal insulation hard felt, hot-press curing is an important process, and in this process, the produced workpiece is often pasted with the upper and lower molds. In the past curing process, kraft paper was often used to isolate, but phenolic formaldehyde often appeared Resin penetration or incomplete isolation causes mold sticking. After demoulding, the resin solidifies and remains on the upper and lower molds, which is difficult to clean. Moreover, when kraft paper adheres to the workpiece for high-temperature treatment, it will cause great damage to the furnace. It will lead to dents or a large number of scratches on the surface of the next batch of products, so that the products become unqualified. Therefore, it is a research direction to propose a new material that can withstand high temperatures of 250°C and is easy to demould

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of preparation method of high temperature resistant non-stick cloth is characterized in that, comprises the following steps:

[0023] The first step: woven glass fiber forming: the glass fiber is opened, cleared, formed into a net, and laminated and needle-punched;

[0024] The second step: dipping and coating Teflon resin: impregnating and coating on the glass fiber braid with 20% Teflon resin suspension;

[0025] The third step: drying: after the impregnated or coated glass fiber fabric is dried, it is dried in a resistance oven at a drying temperature of 60°C and a drying time of 40 minutes.

[0026] The prepared high temperature resistant non-stick cloth has a thickness of 0.08 mm and a density of 165 g / m. The high temperature resistant non-stick cloth is stable in size, high in strength, and the total elongation is less than 5%; it has good temperature resistance, and the continuous working temperature is 70-260 ° C; the friction coefficient of the watch ma...

Embodiment 2

[0028] An application method of high temperature resistant non-stick cloth in Example 1, the application method is in the process of preparing carbon fiber felt, using the high temperature resistant and non-stick cloth to make the workpiece and the non-stick cloth in the curing process of multilayer hot press The upper and lower templates are not sticky and easy to demould, which specifically includes the following steps:

[0029] The first step: 10% phenolic resin and 90% industrial alcohol prepare an impregnating agent according to the ratio of 2.5:1, soak the carbon fiber felt with the prepared impregnating agent for 10 minutes, extrude, and dry at 60°C for 30-60 minutes, and set aside;

[0030] Step 2: Spread a layer of high temperature resistant non-stick cloth on the thin steel plate of the lower mold;

[0031] Step 3: Carry out carbon fiber felt laying and interlayer bonding process on the laid high temperature resistant non-stick cloth;

[0032] Step 4: After the bond...

Embodiment 3

[0035] The steps of the preparation method of a high-temperature-resistant non-stick cloth described in this example are the same as in Example 1, and the different technical parameters are: the second step is impregnated and coated with 25% Teflon resin suspension; the second step The three-step drying time is 60 minutes; the thickness of the prepared high-temperature-resistant non-stick cloth is 0.49 mm, and the density is 905 g / m.

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Abstract

Preparation and application methods of a high-temperature resistant nonstick cloth. The invention belongs to the technical field of novel materials. The high-temperature resistant nonstick cloth is prepared by coating a glass fiber cloth with polytetrafluoroethylene. The high-temperature resistant nonstick cloth is applied in a process of manufacturing carbon fiber felts, wherein a workpiece is free of being adhered to an upper and a lower die plates during a multilayer hot-press machine solidification process by means of the high-temperature resistant nonstick cloth, so that demoulding is convenient to carry out. The high-temperature resistant nonstick cloth has good high-temperature resistance and high anti-aging property, has a smooth surface and any substance is not liable to be adhered to the cloth. The cloth can resist corrosion of strong acid and alkali, is insulating, fireproofing and flame-retarding. The cloth, when being applied in manufacturing of the carbon fiber felts, so that demoulding is convenient to carry out and surfaces of products are smooth and flat. The cloth can avoid problems of adhesive permeation and mould adhesion, overcomes a problem of large amount of paper scraps due to usage of kraft paper and safety hidden risk of a furnace hearth in a solidification process in the prior art, and also overcomes a problem that the adhesive is leaked and is adhered to the upper and lower dies due to pavement by the kraft paper and a long time consumed for cleaning the die plates in the prior art. The cloth can be used repeatedly and can not only reduce cost but also save resources.

Description

technical field [0001] The invention belongs to the technical field of new materials, and in particular relates to a preparation and application method of a high-temperature-resistant non-stick cloth. Background technique [0002] In the process of making carbon fiber thermal insulation hard felt, hot-press curing is an important process, and in this process, the produced workpiece is often pasted with the upper and lower molds. In the past curing process, kraft paper was often used to isolate, but phenolic formaldehyde often appeared Resin penetration or incomplete isolation causes mold sticking. After demoulding, the resin solidifies and remains on the upper and lower molds, which is difficult to clean. Moreover, when kraft paper adheres to the workpiece for high-temperature treatment, it will cause great damage to the furnace. This will lead to dents or a large number of scratches on the surface of the next batch of products, so that the products become unqualified. There...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/00D06N3/04D06M15/41
CPCD06N3/0022D06M15/41D06M2101/40D06N3/0011D06N3/0077D06N3/0088D06N3/047D06N2209/06
Inventor 杨建校刘君基曾自力
Owner 扬州东润新材料科技有限公司