CN103741476A - Self-sticking type easily-washed polytetrafluoroethylene de-molded cloth for autoclave molding composite material and preparation method thereof - Google Patents
Self-sticking type easily-washed polytetrafluoroethylene de-molded cloth for autoclave molding composite material and preparation method thereof Download PDFInfo
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- CN103741476A CN103741476A CN201310729288.1A CN201310729288A CN103741476A CN 103741476 A CN103741476 A CN 103741476A CN 201310729288 A CN201310729288 A CN 201310729288A CN 103741476 A CN103741476 A CN 103741476A
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Abstract
The invention discloses self-sticking type easily-washed polytetrafluoroethylene de-molded cloth for an autoclave molding composite material. The self-sticking type easily-washed polytetrafluoroethylene de-molded cloth comprises an alkali-free glass fabric; the periphery of the alkali-free glass fabric is coated with a polytetrafluoroethylene layer; a silica gel layer is sprayed on one face of the alkali-free glass fabric coated with the polytetrafluoroethylene layer, wherein the weight percents of the alkali-free glass fabric, the polytetrafluoroethylene layer and the silica gel layer are 50%-60%, 20%-40% and 10%-20%. The invention further discloses a preparation method of the self-sticking type easily-washed polytetrafluoroethylene de-molded cloth for the autoclave molding composite material. The preparation method comprises a step of adding a coupling agent into the alkali-free glass fabric and drying, a step of preparing base cloth containing polytetrafluoroethylene and a step of spraying silica gel to obtain the polytetrafluoroethylene de-molded cloth. The polytetrafluoroethylene de-molded cloth disclosed by the invention has the advantages of high strength, good heat stability, easiness of being washed after the polytetrafluoroethylene de-molded cloth is used, no residual glue on the surface of a mould and the like, also has a function of anti-sticking on one side and sticking on the other side, and can be repeatedly applied for a plurality of times.
Description
Technical field
The present invention relates to a kind of autoclave molding composite polytetrafluoroethylene (PTFE) release cloth of self-adhering-type easy-clear and preparation method thereof.
Background technology
Release cloth is that autoclave carries out indispensable part in High Temperature High Pressure curing molding operation to composite, release cloth need to possess the advantages such as intensity is high, Heat stability is good, but the release cloth intensity for autoclave composite material shaping process is not high at present, heat endurance is bad, and easy-clear not, easily cause die surface to leave cull, affect composite material forming quality.
Summary of the invention
One of technical problem to be solved by this invention is deficiency and the defect with release cloth for existing autoclave, the polytetrafluoroethylene (PTFE) release cloth of a kind of autoclave molding composite with self-adhering-type easy-clear is provided, it is high that this polytetrafluoroethylene (PTFE) release cloth has intensity, Heat stability is good, easy-clear after using, die surface does not stay the advantages such as cull, can solve the problems of the technologies described above.
Two of technical problem to be solved by this invention is to provide the preparation method of a kind of autoclave molding composite with the polytetrafluoroethylene (PTFE) release cloth of self-adhering-type easy-clear.
Technical problem solved by the invention can realize by the following technical solutions:
The polytetrafluoroethylene (PTFE) release cloth of self-adhering-type easy-clear for a kind of autoclave molding composite, comprise alkali-free glass fiber cloth, in described alkali-free glass fiber cloth periphery, be coated with polytetrafluoroethylene floor, the wherein one side that is coated with the alkali-free glass fiber cloth of polytetrafluoroethylene floor is coated with layer of silica gel, and wherein said alkali-free glass fiber cloth, described polytetrafluoroethylene floor, the shared percentage by weight of described layer of silica gel are respectively: 50%～60%, 20%～40%, 10%～20%.
A preparation method for the polytetrafluoroethylene (PTFE) release cloth of self-adhering-type easy-clear for autoclave molding composite, comprises the following steps:
(1) alkali-free glass fiber cloth is dry again after coupling agent treatment, baking temperature is 100 ℃～120 ℃;
(2) the alkali-free glass fiber cloth of processing through step (1) is immersed in polytetrafluoroethyldispersion dispersion, through several times repetitive coatings, make the content of polytetrafluoroethylene (PTFE) account for 30%～50% of percentage by weight, then carry out high temperature and get rid of volatile matter processing, making the content of polytetrafluoroethylene (PTFE) account for percentage by weight is 20%～40%, make base cloth, the temperature that wherein high temperature eliminating volatile matter is processed is 300 ℃～400 ℃, and the processing time is 1～2 minute;
(3) a wherein silicone spray of the base cloth obtaining in step (2), then through 90 ℃～110 ℃ heat treatments by removal of solvents, make silica gel content account for 10%～20% of percentage by weight, finally curing molding in 180 ℃～190 ℃ high temperature services, obtains polytetrafluoroethylene (PTFE) release cloth.
In a preferred embodiment of the invention, the several times in described step (2) are 3～4 times.
In a preferred embodiment of the invention, the specification of described alkali-free glass fiber cloth is (70～400) dtex/(10～40) f.
Owing to having adopted technical scheme as above, it is high that the autoclave molding composite that the present invention prepares not only has intensity with the polytetrafluoroethylene (PTFE) release cloth of self-adhering-type easy-clear, Heat stability is good, easy-clear after using, die surface does not stay the advantages such as cull, also possess one side antiseized, the gluing function of another side, repeatedly repeated application.
The specific embodiment
For technological means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with specific embodiment, further set forth the present invention.
The polytetrafluoroethylene (PTFE) release cloth of self-adhering-type easy-clear for a kind of autoclave molding composite, comprise alkali-free glass fiber cloth, in alkali-free glass fiber cloth periphery, be coated with polytetrafluoroethylene floor, the wherein one side that is coated with the alkali-free glass fiber cloth of polytetrafluoroethylene floor is coated with layer of silica gel, and wherein alkali-free glass fiber cloth, polytetrafluoroethylene floor, the shared percentage by weight of layer of silica gel are respectively: 50%～60%, 20%～40%, 10%～20%.
A preparation method for the polytetrafluoroethylene (PTFE) release cloth of self-adhering-type easy-clear for autoclave molding composite, comprises the following steps:
(1) alkali-free glass fiber cloth is dry again after coupling agent treatment, baking temperature is 100 ℃～120 ℃, and wherein, the specification of alkali-free glass fiber cloth is (70～400) dtex/(10～40) f;
(2) the alkali-free glass fiber cloth of processing through step (1) is immersed in polytetrafluoroethyldispersion dispersion, through 3～4 repetitive coatings, make the content of polytetrafluoroethylene (PTFE) account for 30%～50% of percentage by weight, then carry out high temperature and get rid of volatile matter processing, making the content of polytetrafluoroethylene (PTFE) account for percentage by weight is 20%～40%, make base cloth, the temperature that wherein high temperature eliminating volatile matter is processed is 300 ℃～400 ℃, and the processing time is 1～2 minute;
(3) a wherein silicone spray of the base cloth obtaining in step (2), then through 90 ℃～110 ℃ heat treatments by removal of solvents, make silica gel content account for 10%～20% of percentage by weight, finally curing molding in 180 ℃～190 ℃ high temperature services, obtains polytetrafluoroethylene (PTFE) release cloth.
Utilize said method to make respectively following some embodiment:
Embodiment 1
The polytetrafluoroethylene (PTFE) release cloth of self-adhering-type easy-clear for a kind of autoclave molding composite, comprise alkali-free glass fiber cloth, in alkali-free glass fiber cloth periphery, be coated with polytetrafluoroethylene floor, the wherein one side that is coated with the alkali-free glass fiber cloth of polytetrafluoroethylene floor is coated with layer of silica gel, and wherein alkali-free glass fiber cloth, polytetrafluoroethylene floor, the shared percentage by weight of layer of silica gel are respectively: 50%, 40%, 10%.
A preparation method for polytetrafluoroethylene (PTFE) release cloth in embodiment 1, comprises the following steps:
(1) alkali-free glass fiber cloth is dry again after coupling agent treatment, baking temperature is 100 ℃, and wherein, the specification of alkali-free glass fiber cloth is 400dtex/10f;
(2) the alkali-free glass fiber cloth of processing through step (1) is immersed in polytetrafluoroethyldispersion dispersion, through 3 repetitive coatings, make the content of polytetrafluoroethylene (PTFE) account for 50% of percentage by weight, then carry out high temperature and get rid of volatile matter processing, make the content of polytetrafluoroethylene (PTFE) account for 40% of percentage by weight, make base cloth, the temperature that wherein high temperature eliminating volatile matter is processed is 300 ℃, and the processing time is 1 minute;
(3) a wherein silicone spray of the base cloth obtaining in step (2), then through 90 ℃ of heat treatments by removal of solvents, make silica gel content account for 10% of percentage by weight, finally curing molding in 180 ℃ of high temperature services, obtains the polytetrafluoroethylene (PTFE) release cloth in embodiment 1.
Embodiment 2
The polytetrafluoroethylene (PTFE) release cloth of self-adhering-type easy-clear for a kind of autoclave molding composite, comprise alkali-free glass fiber cloth, in alkali-free glass fiber cloth periphery, be coated with polytetrafluoroethylene floor, the wherein one side that is coated with the alkali-free glass fiber cloth of polytetrafluoroethylene floor is coated with layer of silica gel, and wherein alkali-free glass fiber cloth, polytetrafluoroethylene floor, the shared percentage by weight of layer of silica gel are respectively: 60%, 20%, 20%.
A preparation method for polytetrafluoroethylene (PTFE) release cloth in embodiment 1, comprises the following steps:
(1) alkali-free glass fiber cloth is dry again after coupling agent treatment, baking temperature is 120 ℃, and wherein, the specification of alkali-free glass fiber cloth is 70dtex/40f;
(2) the alkali-free glass fiber cloth of processing through step (1) is immersed in polytetrafluoroethyldispersion dispersion, through 4 repetitive coatings, make the content of polytetrafluoroethylene (PTFE) account for 30% of percentage by weight, then carry out high temperature and get rid of volatile matter processing, make the content of polytetrafluoroethylene (PTFE) account for 20% of percentage by weight, make base cloth, the temperature that wherein high temperature eliminating volatile matter is processed is 400 ℃, and the processing time is 2 minutes;
(3) a wherein silicone spray of the base cloth obtaining in step (2), then through 110 ℃ of heat treatments by removal of solvents, make silica gel content account for 20% of percentage by weight, finally curing molding in 190 ℃ of high temperature services, obtains the polytetrafluoroethylene (PTFE) release cloth in embodiment 2.
Embodiment 3
The polytetrafluoroethylene (PTFE) release cloth of self-adhering-type easy-clear for a kind of autoclave molding composite, comprise alkali-free glass fiber cloth, in alkali-free glass fiber cloth periphery, be coated with polytetrafluoroethylene floor, the wherein one side that is coated with the alkali-free glass fiber cloth of polytetrafluoroethylene floor is coated with layer of silica gel, and wherein alkali-free glass fiber cloth, polytetrafluoroethylene floor, the shared percentage by weight of layer of silica gel are respectively: 55%, 30%, 15%.
A preparation method for polytetrafluoroethylene (PTFE) release cloth in embodiment 1, comprises the following steps:
(1) alkali-free glass fiber cloth is dry again after coupling agent treatment, baking temperature is 110 ℃, and wherein, the specification of alkali-free glass fiber cloth is 235dtex/25f;
(2) the alkali-free glass fiber cloth of processing through step (1) is immersed in polytetrafluoroethyldispersion dispersion, through 4 repetitive coatings, make the content of polytetrafluoroethylene (PTFE) account for 40% of percentage by weight, then carry out high temperature and get rid of volatile matter processing, make the content of polytetrafluoroethylene (PTFE) account for 30% of percentage by weight, make base cloth, the temperature that wherein high temperature eliminating volatile matter is processed is 350 ℃, and the processing time is 1.5 minutes;
(3) a wherein silicone spray of the base cloth obtaining in step (2), then through 100 ℃ of heat treatments by removal of solvents, make silica gel content account for 15% of percentage by weight, finally curing molding in 185 ℃ of high temperature services, obtains the polytetrafluoroethylene (PTFE) release cloth in embodiment 3.
It is high that the autoclave molding composite that the various embodiments described above prepare not only has intensity with the polytetrafluoroethylene (PTFE) release cloth of self-adhering-type easy-clear, Heat stability is good, easy-clear after using, die surface does not stay the advantages such as cull, also possess one side antiseized, the gluing function of another side, repeatedly repeated application.
More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and description, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (4)
1. the polytetrafluoroethylene (PTFE) release cloth of self-adhering-type easy-clear for an autoclave molding composite, it is characterized in that, comprise alkali-free glass fiber cloth, in described alkali-free glass fiber cloth periphery, be coated with polytetrafluoroethylene floor, the wherein one side that is coated with the alkali-free glass fiber cloth of polytetrafluoroethylene floor is coated with layer of silica gel, and wherein said alkali-free glass fiber cloth, described polytetrafluoroethylene floor, the shared percentage by weight of described layer of silica gel are respectively: 50%～60%, 20%～40%, 10%～20%.
2. a preparation method for the polytetrafluoroethylene (PTFE) release cloth of self-adhering-type easy-clear for autoclave molding composite as claimed in claim 1, is characterized in that, comprises the following steps:
(1) alkali-free glass fiber cloth is dry again after coupling agent treatment, baking temperature is 100 ℃～120 ℃;
(2) the alkali-free glass fiber cloth of processing through step (1) is immersed in polytetrafluoroethyldispersion dispersion, through several times repetitive coatings, make the content of polytetrafluoroethylene (PTFE) account for 30%～50% of percentage by weight, then carry out high temperature and get rid of volatile matter processing, making the content of polytetrafluoroethylene (PTFE) account for percentage by weight is 20%～40%, make base cloth, the temperature that wherein high temperature eliminating volatile matter is processed is 300 ℃～400 ℃, and the processing time is 1～2 minute;
(3) a wherein silicone spray of the base cloth obtaining in step (2), then through 90 ℃～110 ℃ heat treatments by removal of solvents, make silica gel content account for 10%～20% of percentage by weight, finally curing molding in 180 ℃～190 ℃ high temperature services, obtains polytetrafluoroethylene (PTFE) release cloth.
3. the preparation method of the polytetrafluoroethylene (PTFE) release cloth of self-adhering-type easy-clear for a kind of autoclave molding composite as claimed in claim 2, is characterized in that, the several times in described step (2) are 3～4 times.
4. the preparation method of the polytetrafluoroethylene (PTFE) release cloth of self-adhering-type easy-clear for a kind of autoclave molding composite as claimed in claim 2, is characterized in that, the specification of described alkali-free glass fiber cloth is (70～400) dtex/(10～40) f.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310729288.1A CN103741476A (en) | 2013-12-25 | 2013-12-25 | Self-sticking type easily-washed polytetrafluoroethylene de-molded cloth for autoclave molding composite material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310729288.1A CN103741476A (en) | 2013-12-25 | 2013-12-25 | Self-sticking type easily-washed polytetrafluoroethylene de-molded cloth for autoclave molding composite material and preparation method thereof |
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| CN103741476A true CN103741476A (en) | 2014-04-23 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105667017A (en) * | 2016-01-14 | 2016-06-15 | 中国科学院长春应用化学研究所 | Adhesive high temperature-resistant demoulding cloth and preparation method thereof |
| CN106274007A (en) * | 2016-07-30 | 2017-01-04 | 龙宇电子(梅州)有限公司 | For multilayer printed wiring board and the preparation method of the cushion pad of copper-clad plate process for pressing |
| CN106738507A (en) * | 2016-12-13 | 2017-05-31 | 上海道储新材料有限公司 | A kind of die surface protective layer construction method and its product |
| US20210122088A1 (en) * | 2015-12-22 | 2021-04-29 | Cytec Industries Inc. | Mold-releasable surfacing materials for composite parts |
| CN113241425A (en) * | 2021-06-03 | 2021-08-10 | 贵州民族大学 | Molybdenite electrode and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01314165A (en) * | 1988-06-13 | 1989-12-19 | Nitto Denko Corp | Release sheet |
| JPH0711581A (en) * | 1993-06-23 | 1995-01-13 | Toray Ind Inc | Heat-resistant releasing sheet and its production |
| CN101003191A (en) * | 2006-01-19 | 2007-07-25 | 日东电工株式会社 | Composite sheet |
| CN202179904U (en) * | 2011-07-21 | 2012-04-04 | 江苏明晶布业有限公司 | Sprayed and film-covered composite filter material |
| CN102442026A (en) * | 2011-09-25 | 2012-05-09 | 顾根山 | Method for manufacturing polytetrafluoroethylene fiberglass-cloth demoulding cloth |
-
2013
- 2013-12-25 CN CN201310729288.1A patent/CN103741476A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01314165A (en) * | 1988-06-13 | 1989-12-19 | Nitto Denko Corp | Release sheet |
| JPH0711581A (en) * | 1993-06-23 | 1995-01-13 | Toray Ind Inc | Heat-resistant releasing sheet and its production |
| CN101003191A (en) * | 2006-01-19 | 2007-07-25 | 日东电工株式会社 | Composite sheet |
| CN202179904U (en) * | 2011-07-21 | 2012-04-04 | 江苏明晶布业有限公司 | Sprayed and film-covered composite filter material |
| CN102442026A (en) * | 2011-09-25 | 2012-05-09 | 顾根山 | Method for manufacturing polytetrafluoroethylene fiberglass-cloth demoulding cloth |
Non-Patent Citations (2)
| Title |
|---|
| 胡福田 等: "玻璃纤维布增强聚四氟乙烯复合材料的制备及性能研究", 《化工新型材料》 * |
| 胡福田 等: "聚四氟乙烯覆铜板的制备及性能研究", 《玻璃钢/复合材料》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210122088A1 (en) * | 2015-12-22 | 2021-04-29 | Cytec Industries Inc. | Mold-releasable surfacing materials for composite parts |
| US11833718B2 (en) * | 2015-12-22 | 2023-12-05 | Cytec Industries Inc. | Mold-releasable surfacing materials for composite parts |
| CN105667017A (en) * | 2016-01-14 | 2016-06-15 | 中国科学院长春应用化学研究所 | Adhesive high temperature-resistant demoulding cloth and preparation method thereof |
| CN106274007A (en) * | 2016-07-30 | 2017-01-04 | 龙宇电子(梅州)有限公司 | For multilayer printed wiring board and the preparation method of the cushion pad of copper-clad plate process for pressing |
| CN106274007B (en) * | 2016-07-30 | 2018-12-25 | 龙宇电子(梅州)有限公司 | Preparation method for multilayer printed wiring board and the cushion of copper-clad plate process for pressing |
| CN106738507A (en) * | 2016-12-13 | 2017-05-31 | 上海道储新材料有限公司 | A kind of die surface protective layer construction method and its product |
| CN106738507B (en) * | 2016-12-13 | 2018-12-28 | 道生天合材料科技（上海）有限公司 | A kind of die surface protective layer construction method and its product |
| CN113241425A (en) * | 2021-06-03 | 2021-08-10 | 贵州民族大学 | Molybdenite electrode and preparation method thereof |
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Application publication date: 20140423 |