CN105128350A - Method for preparing polytetrafluoroethylene building membrane - Google Patents
Method for preparing polytetrafluoroethylene building membrane Download PDFInfo
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- CN105128350A CN105128350A CN201510550513.4A CN201510550513A CN105128350A CN 105128350 A CN105128350 A CN 105128350A CN 201510550513 A CN201510550513 A CN 201510550513A CN 105128350 A CN105128350 A CN 105128350A
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Abstract
The invention provides a method for preparing a polytetrafluoroethylene building membrane. The method comprises the following steps: (1) providing a superfine glass fibre base cloth and a polytetrafluoroethylene dispersion liquid; (2) carrying out heat treatment on the superfine glass fibre base cloth; (3) soaking the base cloth subjected to the heat treatment and cooled in the polytetrafluoroethylene dispersion liquid; (4) sequentially drying, roasting and sintering the soaked base cloth; and (5) repeating the soaking in the step (3), and the step (4) to prepare the polytetrafluoroethylene building membrane. According to the method provided by the invention, the polytetrafluoroethylene building membrane material is prepared by a method for soaking a coating for many times; and the prepared polytetrafluoroethylene building membrane has the advantages of being high in strength, light in mass, high in flexibility, easy to transport and install, and the like.
Description
Technical field
The present invention relates to membrane material preparation field, particularly relate to a kind of method preparing polytetrafluoroethylene (PTFE) building film.
Background technology
Modern architecture membrane structure material refer to high-intensity fiber fabric be framework material, surface coating high-performance coating material, and there is ageing-resistant, wind load resistance snow and the performance such as self-cleaning, the roof composite of the buildings such as exhibition, physical culture, traffic, leisure can be widely used as.The one that to take glass fabric as the membrane material made of substrate surface coating polytetrafluoroethylene (PTFE) be exactly wherein.This type of material adopts the method for dip coating, coated with PTFE resin on ultra-fine fibre glass base cloth and the flexible composite made.After dipping, part PTFE resin covers on ultra-fine fibre glass scrim surfaces, a part then enters base cloth internal void, again through super-dry, cure, the operation such as sintering, by the moisture in PTFE dispersion liquid and the volatilization of other small-molecule substance, stay in the surface and hole that PTFE resin granule is closely attached to glass-fiber-fabric, reach the object of glass-fiber-fabric and PTFE strong bonded, make it to become one and both had a glass characteristic, also have the many excellent properties of PTFE
novelmaterial.
But existing PTFE builds the demand that film can not meet user.
Summary of the invention
Technical problem to be solved by this invention is, provide a kind of method preparing polytetrafluoroethylene (PTFE) building film, its polytetrafluoroethylene (PTFE) building film material material prepared has that intensity is high, quality is light, flexibility is good, is easy to the advantages such as transport and installation.
In order to solve the problem, the invention provides a kind of method preparing polytetrafluoroethylene (PTFE) building film, comprise the steps: that (1) provides ultra-fine fibre glass base cloth and polytetrafluoroethyldispersion dispersion; (2) described ultra-fine fibre glass base cloth is heat-treated; (3) cooled for heat treatment base cloth is immersed in polytetrafluoroethyldispersion dispersion; (4) Ji Bu after dipping is carried out drying successively, bakes and sinter; (5) dipping and the step (4) of step (3) is repeated, obtained polytetrafluoroethylene (PTFE) building film.
Further, in step (1), the combustible content of described ultra-fine fibre glass base cloth is 1.1%-1.5%, and weight per square meter is 380 grams-450 grams.
Further, in step (1), the solid content of polytetrafluoroethyldispersion dispersion is 32%-65%, and relative density is 1.35g/cm
3-1.55g/cm
3.
Further, in step (2), described heat treated temperature is 280 DEG C-360 DEG C, and the time is 2 minutes-7 minutes.
Further, in step (4), described baking temperature is 150 DEG C-170 DEG C, and described drying time is 1 minute-3 minutes; Described baking temperature is 260 DEG C-290 DEG C, described in bake the time be 30 seconds-100 seconds; Described sintering temperature is 290 DEG C-370 DEG C, and described sintering time is 30 seconds-100 seconds.
Further, in step (5), number of repetition is 2-20 time.
Further, when repeating step (3), the solid content of polytetrafluoroethyldispersion dispersion is 40%-65%; When repeating step (4), baking temperature is 140 DEG C-180 DEG C, and drying time is 1 minute-4 minutes, and baking temperature is 250 DEG C-295 DEG C, and the time of baking is 30 seconds-90 seconds, and sintering temperature is 290 DEG C-390 DEG C, and sintering time is 30 seconds-90 seconds.
The invention has the advantages that, adopt repeatedly dip coating to prepare polytetrafluoroethylene (PTFE) building film material, the polytetrafluoroethylene (PTFE) of preparation building film has that intensity is high, quality is light, flexibility is good, be easy to the advantages such as transport and installation.
Detailed description of the invention
Below the detailed description of the invention preparing the method for polytetrafluoroethylene (PTFE) building film provided by the invention is elaborated.
A kind of method preparing polytetrafluoroethylene (PTFE) building film of the present invention comprises the steps.
Step (1), provides ultra-fine fibre glass base cloth and polytetrafluoroethyldispersion dispersion.
The combustible content of described ultra-fine fibre glass base cloth is 1.1%-1.5%, and weight per square meter is 380 grams-450 grams, and the institutional framework of described ultra-fine fibre glass base cloth is plain weave or Fang Ping.The solid content of described polytetrafluoroethyldispersion dispersion is 32%-65%, and relative density is 1.35g/cm
3-1.55g/cm
3.Preferably, the solid content of described polytetrafluoroethyldispersion dispersion is 35%-50%.
Step (2), heat-treats described ultra-fine fibre glass base cloth.Heat treatment is the size in order to remove ultra-fine fibre glass scrim surfaces, improves the caking property of resin and base cloth.
In this step, described heat treated temperature is 280 DEG C-360 DEG C, and the time is 2 minutes-7 minutes.
Step (3), immerses cooled for heat treatment base cloth in polytetrafluoroethyldispersion dispersion.
Step (4), carries out drying successively by the Ji Bu after dipping, bakes and sinter.
Described baking temperature is 150 DEG C-170 DEG C, and described drying time is 1 minute-3 minutes; Described baking temperature is 260 DEG C-290 DEG C, described in bake the time be 30 seconds-100 seconds; Described sintering temperature is 290 DEG C-370 DEG C, and described sintering time is 30 seconds-100 seconds.
Step (5), repeats step (3) and step (4), obtained polytetrafluoroethylene (PTFE) building film.
Repeatedly can repeat dipping and the step (4) of step step (3), such as, can be that number of repetition is 2-20 time.
Further, when repeating step (3), the solid content of polytetrafluoroethyldispersion dispersion is 40%-65%; When repeating step (4), baking temperature is 140 DEG C-180 DEG C, and drying time is 1 minute-4 minutes, and baking temperature is 250 DEG C-295 DEG C, and the time of baking is 30 seconds-90 seconds, and sintering temperature is 290 DEG C-390 DEG C, and sintering time is 30 seconds-90 seconds.
Enumerate the present invention's two embodiments below, illustrate that the present invention prepares the method for polytetrafluoroethylene (PTFE) building film.
Embodiment 1
1, select ultra-fine fibre glass base cloth, combustible content is 1.2%, and weight per square meter is 401 grams, and the institutional framework of fabric is plain weave.
2, ultra-fine fibre glass base cloth is heat-treated.Heat treated temperature is 330 DEG C, and the time is 5.5 minutes.
3, by the base cloth cooling after above-mentioned heat treatment, be then impregnated in polytetrafluoroethyldispersion dispersion.The solid content of polytetrafluoroethyldispersion dispersion is 40%.
4, the Ji Bu after dipping is carried out drying successively, bakes, sinters.Baking temperature is 150 DEG C, and drying time is 2.5 minutes; Baking temperature is 270 DEG C, and the time of baking is 75 seconds; Sintering temperature is 340 DEG C, and sintering time is 70 seconds.
5. repeat dipping, dry, bake, sintering circuit.Number of repetition is 11 times.During each dipping, the solid content of tetrafluoroethene dispersion liquid is 53%.Baking temperature is 155 DEG C, and drying time is 3 minutes; Baking temperature is 275 DEG C, and the time of baking is 65 seconds; Sintering temperature is 350 DEG C, and sintering time is 65 seconds.Final obtained polytetrafluoroethylene (PTFE) building film material material.
Embodiment 2
1, select ultra-fine fibre glass base cloth, combustible content is 1.3%, and weight per square meter is 417 grams, and the institutional framework of fabric is Fang Ping.
2, ultra-fine fibre glass base cloth is heat-treated.Heat treated temperature is 360 DEG C, and the time is 4 minutes.
3, by the base cloth cooling after above-mentioned heat treatment, be then impregnated in polytetrafluoroethyldispersion dispersion.The solid content of polytetrafluoroethyldispersion dispersion is 47%.
4, the Ji Bu after dipping is carried out drying successively, bakes, sinters.Baking temperature is 165 DEG C, and drying time is 2 minutes; Baking temperature is 290 DEG C, and the time of baking is 50 seconds; Sintering temperature is 360 DEG C, and sintering time is 50 seconds.
5, repeat dipping, dry, bake, sintering circuit.Number of repetition is 13 times.During each dipping, the solid content of tetrafluoroethene dispersion liquid is 55%.Baking temperature is 160 DEG C, and drying time is 2 minutes; Baking temperature is 285 DEG C, and the time of baking is 50 seconds; Sintering temperature is 365 DEG C, and sintering time is 55 seconds.Final obtained polytetrafluoroethylene (PTFE) building film material material.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. prepare a method for polytetrafluoroethylene (PTFE) building film, it is characterized in that, comprise the steps: that (1) provides ultra-fine fibre glass base cloth and polytetrafluoroethyldispersion dispersion; (2) described ultra-fine fibre glass base cloth is heat-treated; (3) cooled for heat treatment base cloth is immersed in polytetrafluoroethyldispersion dispersion; (4) Ji Bu after dipping is carried out drying successively, bakes and sinter; (5) dipping and the step (4) of step (3) is repeated, obtained polytetrafluoroethylene (PTFE) building film.
2. the method preparing polytetrafluoroethylene (PTFE) building film according to claim 1, it is characterized in that, in step (1), the combustible content of described ultra-fine fibre glass base cloth is 1.1%-1.5%, and weight per square meter is 380 grams-450 grams.
3. the method preparing polytetrafluoroethylene (PTFE) building film according to claim 1, it is characterized in that, in step (1), the solid content of polytetrafluoroethyldispersion dispersion is 32%-65%, and relative density is 1.35g/cm
3-1.55g/cm
3.
4. the method preparing polytetrafluoroethylene (PTFE) building film according to claim 1, it is characterized in that, in step (2), described heat treated temperature is 280 DEG C-360 DEG C, and the time is 2 minutes-7 minutes.
5. the method preparing polytetrafluoroethylene (PTFE) building film according to claim 1, it is characterized in that, in step (4), described baking temperature is 150 DEG C-170 DEG C, and described drying time is 1 minute-3 minutes; Described baking temperature is 260 DEG C-290 DEG C, described in bake the time be 30 seconds-100 seconds; Described sintering temperature is 290 DEG C-370 DEG C, and described sintering time is 30 seconds-100 seconds.
6. the method preparing polytetrafluoroethylene (PTFE) building film according to claim 1, it is characterized in that, in step (5), number of repetition is 2-20 time.
7. the method preparing polytetrafluoroethylene (PTFE) building film according to claim 1, it is characterized in that, when repeating step (3), the solid content of polytetrafluoroethyldispersion dispersion is 40%-65%; When repeating step (4), baking temperature is 140 DEG C-180 DEG C, and drying time is 1 minute-4 minutes, and baking temperature is 250 DEG C-295 DEG C, and the time of baking is 30 seconds-90 seconds, and sintering temperature is 290 DEG C-390 DEG C, and sintering time is 30 seconds-90 seconds.
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| CN201510550513.4A CN105128350A (en) | 2015-09-01 | 2015-09-01 | Method for preparing polytetrafluoroethylene building membrane |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108221394A (en) * | 2017-12-29 | 2018-06-29 | 江苏维凯科技股份有限公司 | The production technology of PTFE high temperature resistant multicolour pattern glass wall papers |
| CN108330699A (en) * | 2017-12-29 | 2018-07-27 | 江苏维凯科技股份有限公司 | The production technology of PTFE building film materials |
| CN114605760A (en) * | 2022-03-29 | 2022-06-10 | 江苏博诚新科技材料有限公司 | Process for preparing polytetrafluoroethylene glass fiber breathable varnished cloth |
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| CN101186117A (en) * | 2007-11-30 | 2008-05-28 | 洛阳轴研科技股份有限公司 | Glass cloth reinforced teflon composite holder material |
| CN101240509A (en) * | 2008-03-26 | 2008-08-13 | 泰兴市维维高分子材料有限公司 | Method for preparing polytetrafluoroethylene spatial structure building film material |
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| CN103924452A (en) * | 2014-04-15 | 2014-07-16 | 包信章 | Device and method for preparing double-sided polytetrafluoroethylene glass fiber cloth |
| CN103963309A (en) * | 2014-04-22 | 2014-08-06 | 湖州森诺氟材料科技有限公司 | High-strength transparent polytetrafluoroethylene building membrane and preparation method thereof |
| CN104029400A (en) * | 2014-05-30 | 2014-09-10 | 东华大学 | PTFE (Polytetrafluoroethylene) architectural membrane structure material and production method thereof |
| CN104532504A (en) * | 2014-12-26 | 2015-04-22 | 江苏泰氟隆科技有限公司 | Preparation method of polytetrafluoroethylene glass fiber breathable varnished cloth |
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2015
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Patent Citations (7)
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| CN101186117A (en) * | 2007-11-30 | 2008-05-28 | 洛阳轴研科技股份有限公司 | Glass cloth reinforced teflon composite holder material |
| CN101240509A (en) * | 2008-03-26 | 2008-08-13 | 泰兴市维维高分子材料有限公司 | Method for preparing polytetrafluoroethylene spatial structure building film material |
| CN101920559A (en) * | 2010-06-09 | 2010-12-22 | 浙江格尔泰斯环保特材科技有限公司 | Preparation method and product of polytetrafluoroethylene (PTFE) film |
| CN103924452A (en) * | 2014-04-15 | 2014-07-16 | 包信章 | Device and method for preparing double-sided polytetrafluoroethylene glass fiber cloth |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108221394A (en) * | 2017-12-29 | 2018-06-29 | 江苏维凯科技股份有限公司 | The production technology of PTFE high temperature resistant multicolour pattern glass wall papers |
| CN108330699A (en) * | 2017-12-29 | 2018-07-27 | 江苏维凯科技股份有限公司 | The production technology of PTFE building film materials |
| CN114605760A (en) * | 2022-03-29 | 2022-06-10 | 江苏博诚新科技材料有限公司 | Process for preparing polytetrafluoroethylene glass fiber breathable varnished cloth |
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Application publication date: 20151209 |
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