CN1061725C - Water-proof air-permeable fabric and producing method thereof - Google Patents
Water-proof air-permeable fabric and producing method thereof Download PDFInfo
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- CN1061725C CN1061725C CN 97102948 CN97102948A CN1061725C CN 1061725 C CN1061725 C CN 1061725C CN 97102948 CN97102948 CN 97102948 CN 97102948 A CN97102948 A CN 97102948A CN 1061725 C CN1061725 C CN 1061725C
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Abstract
The present invention discloses a waterproof air-permeable fabric and a preparation method thereof. The preparation method comprises the steps that a hydrophobic air-permeable film is compounded on the base cloth of the fabric; a composite face material has no need of hydrophilic treatment. The air-permeable film is prepared from polytetrafluoroethylene resin, and is actually a porous film; the elasticity of the film is obtained by a multi-time expanding and shaping method. The method of the present invention has no limitation to raw materials, and is capable of processing both polytetrafluoroethylene resin with high molecular weight and polytetrafluoroethylene resin with low molecular weight. Compared with the prior art and method, the expanding, heating and shaping area of the method is increased by more than one time. Because additives are added, the film has high strength and favorable abrasive resistance; the performance of the film is enhanced.
Description
The invention relates to a kind of proofed breathable fabric and manufacture method thereof, relate more particularly to a kind of perforated membrane and manufacture method thereof.
Everyone wishes that the clothes energy weather of oneself wearing is dual-purpose, rainy day not only can waterproof can also breathe freely, sweat gas on one's body is expanded to the clothes outside, no matter it is fine, cloudy day, various environment of rainy day are worn all comfortable, this has just required a kind of high Air permenbility, high water resistance, and anti-folding, wrinkle, some also requires resilient high-performance garment material, use silicone, the polymer coating that fabric that fluorine carbon and other hydrophober are handled and development are recently released, though it is ventilative good, but once friction, folding, wrinkle, stretch and wait just infiltration, water pressure resistance is also very low ≯ the 1000mm water column, and the life-span is very short, washing just loses water resistance several times, and patent EP0110626 and US4194041 make the hydrophobic air-permeable layer in hydrophilic film and the compound waterproof breathable garment lining that manufactures of fabric with poly tetrafluoroethylene, can reach hydrostatic pressing 250mm, 20 minutes no seepages, Air permenbility＞1000g/m
2My god, but it must be in the one side of water-repellent layer, and promptly the lining face of lining is compounded with hydrophilic film, as the hydrophilic film made from hydrophiles such as polyethers-poly-urethane, poly-perfluorinated sulfonic acids.The preparation of this hydrophilic layer is very complicated, in addition need carry out on PTFE film surface polymerization or with its glycerol polymerization, hydrophilic layer thickness reaches 170 μ.Usually real rainproof actual requirement is; Resistance to hydrostatic pressure 1400mm, extra torrential rain requires greater than 2000mm.Air permenbility＞1000g/m
2My god, large amount of exercise requirement＞3500-4000g/m
2My god.Obviously the product of above-mentioned two patent gained can not meet the demands.
Disclose a kind of waterproof breathable garment and manufacturing method of fabric thereof in the patent CN-94113980 of Fragrance Hill, palace application, garment material is that fabric and hydrophobic ventilated membrane directly are composited, and ventilated membrane prepares with low-molecular-weight resin, and the elasticity of film obtains with the retraction method.
A kind of weather water proof air penetrating shoes and manufacturing method of fabric thereof are disclosed in the patent CN-94113981 of Fragrance Hill, palace application, this lining is well-pressed waterproof and breathable composite, be compounded with polytetrafluoroethylene (PTFE) hydrophobic film, lining in the middle of the bilaminar fiber fabric, compound available various natural, the synthetic direct composite membrane of the viscose glue surface of lining and film needn't hydrophilic treatment.
A kind of new method for preparing perforated membrane with low molecular weight tetrafluoro ethylene resin is disclosed in the patent CN-94112057 of Fragrance Hill, palace application, it utilize mix between different trade mark low-molecular-weight resins and surface tension between atomic little difference, they are mixed by a certain percentage, under-10 ℃～1000 ℃, expand typing with physics expansion method then.But this method applicable surface is narrow, is only applicable to the low-molecular-weight resin of several trades mark, and is difficult to other trade mark resin.And the equipment of usefulness is to heat on the face, non-uniform temperature, about 50,000 yuan of expense.Film-strength with above-mentioned feedstock production is low, wear no resistance, and the expansion typing is only carried out once, and film easily breaks.
The above patent is introduced by reference in this application.
One of purpose of the present invention provides a kind of proofed breathable fabric and preparation method thereof.
Two of purpose of the present invention provides a kind of hydrophobic ventilated membrane and preparation method thereof.
Three of purpose of the present invention provides a kind of perforated membrane and preparation method thereof.
These purposes of the present invention and other purpose will further be launched and illustrate by following detailed description and explanation.
In proofed breathable fabric of the present invention, a compound hydrophobic ventilated membrane on the fabric base cloth does not need hydrophilic treatment hydrophobic ventilated membrane to prepare with polyflon, and the elasticity of film obtains the Air permenbility＞6000g/m of film with the expansion typing method
2My god, hydrostatic pressing＞7000mm water column, 2 hours are non-leakage, water feeler＞90 ℃.And the hydrophobic ventilated membrane is direct and fabric is compound.The hydrophobic ventilated membrane can be a polytetrafluoroethylene (PTFE) perforated membrane.
In the present invention, the polytetrafluoroethylene (PTFE) perforated membrane can not be the hydrophobic ventilated membrane also, and can prepare as follows;
A, batching; PTFE is added an amount of extrusion aid and additive, stir evenly;
B, pre-molding: the PTFE powder is pressed into blank in advance at 50～60 ℃;
C, pushing: blank is squeezed into strip at 50～60 ℃;
D, calendering: under uniform temp, strip is rolled into cummerbund;
E, drying: extrusion aid is removed clean at 100～300 ℃;
F, stretching: at 300～350 ℃ belt is carried out longitudinal stretching, make it to become base band;
G, expansion: base band is carried out lateral magnification, and repeatedly typing promptly becomes the PTFE perforated membrane.
Wherein, the expansion temperature is-20～1500 ℃, and expansion typing number of times is more than secondary, below ten times.Additive can be inorganic salts and inorganic oxide and pigment and conventional powder additive, and addition can be ten thousand of total batching/to 1 15.Wherein, inorganic salts can be for the salt of periodic table of elements I A family and II A family metal, as Nacl, and KNO
3, CUSO
4Deng, inorganic oxide can be zinc oxide, aerosil, magnesia, precipitated calcium carbonate etc.
Expansion temperature of the present invention is more extensive, can be-20～1500 ℃ of expansion down, and high temperature expansion typing number of times is more than ten times, every expansion typing once makes heat conduct once to the profound level of film, all reaches requirement until film, the film of expansion typing can not break like this, and intensity is good.
In the present invention, can not only prepare the hydrophobic ventilated membrane with method of the present invention, and can prepare the membrane product in various fabric widths and thickness and aperture, as film, band, battalion, rod, be more suitable for some special goods, as hydrophilic film, reverse osmosis membrane, spy sense film, filter membrane, the prescription that specifically prepares various films is known in Fragrance Hill, palace aforementioned patent and prior art, in this few narration.
In the present invention, above-mentioned prescription and preparation method and technology thereof can be with reference to those patents of chatting before the Fragrance Hill, palace, and all patents are incorporated herein and as a part of the present invention.
Adopt method of the present invention, just unrestricted to raw material, all brands both at home and abroad, no matter the polytetrafluoroethylene (PTFE) resin of high and low molecular weight all can be processed, and uses; Expansion adds the HEAT SETTING area and doubles abovely than art methods, is linear heating, and expense only is 1,000 yuan; And owing to added additive, and the film-strength height, ABRASION RESISTANCE is good; Be more preferably and adopt lateral magnification repeatedly to finalize the design, so film can not break; Certainly also have many advantages and make us surprised part with method of the present invention, do not enumerate one by one at this.
The raw material that the present invention adopts can obtain from commercially available, and the equipment of employing also is that the industry is known.
Below further specify and set forth the present invention by specific embodiment, but embodiment only is used for explanation, and can not limit claim scope of the present invention.
Example 1:
Prepare polytetrafluoroethylporous porous membrane as follows.
A, batching: get 6-J by weight respectively accounting for 1/3, F-103 and FR-202B, stirring and evenly mixing adds the millesimal calcium sulfate of conventional extrusion aid and gross weight:
B, above-mentioned batching is pressed into blank in advance, at 50～60 ℃ blank is squeezed into strip then, strip is rolled into cummerbund at uniform temp at 50～60 ℃; And then about 236 ℃, extrusion aid is removed totally by dry;
C, about 300 ℃ belt is carried out longitudinal stretching, make it to become base band, then base band is carried out lateral magnification, three typings promptly become the PTFE perforated membrane.
The perforated membrane and the fabric (polyester-cotton blend) of above-mentioned preparation is compound, Air permenbility 4700 gram/rice
3My god, at 6000mm, ne-leakage under 2 hours hydrostatic pressings, washing is not come unstuck after 30 times in washing machine.
Example 2:
The raw material band made from homemade low-molecular-weight polyflon, get 4 times of longitudinal stretchings, width is 5cm, thickness is respectively 0.04mm, 0.2mm, 0.4mm, 1mm, and respectively to be cut into length be that 20cm makes base band, pack into then and clamp with clip in the dilator, it is 50cm that lateral magnification becomes width for 10 times, and every 9cm is equipped with one group of high temperature heat source in the dilator, open one group, two groups, three groups, four groups, five groups thermals source successively and carry out lateral magnification, result such as table one.
Table one
Expansion heating thickness (mm)
Temperature groups several 0.04 0.2 0.4 1
1 is broken
2 is broken
500 degree 3 broken (Celsius) 4 are broken
5 is uneven broken broken
1 is broken
2 is uneven broken broken
1000 degree 3 still can uneven broken (Celsius) 4 one's likes or preferences can break
5 is good uneven carefully
1 is uneven broken broken
2 still can be uneven broken
1500 degree, 3 one's likes or preferences can be uneven broken
(Celsius) 4 good one's likes or preferences can be uneven
5 one's likes or preferences can carefully
Can find out that from table one the thick more required heating number of times of film is just many more; Temperature is high more, and required heating number of times just reduces.
Example 3:
Get the raw material band that did not stretch, put into and be shaped as:
Adjustable secondary vertical, horizontal stretcher.2 times of the first section longitudinal stretchings; 3.5 times of the second section lateral magnifications; The 3rd section stretches 2 times again; 3 times of the lateral magnifications again of the 4th section.One group of heating source is housed in every section.Result of the test such as table two.
Several 0.04 0.2 0.4 1500 degree 1 broken (Celsius) 2 of table two expansion heating thickness (mm) temperature groups are uneven broken broken
3 good uneven broken (Celsius) 4 are uneven carefully
1 uneven broken broken broken 1000 degree 2 still can uneven uneven (Celsius) but 3 one's likes or preferences Shang Keshang can
4 carefully
1 still can uneven uneven uneven 1500 degree, 2 one's likes or preferences can be still can uneven (Celsius) 3 carefully
4 carefully from table two as can be known, be better than once expanding the method for heating for multiple times with secondary lateral magnification method.Example 4: the equipment in the example two is adjusted into three stretching expansions of vertical, horizontal, whenever is assembled with two thermals source.Result of the test such as table three.
Table three
Expansion heating thickness (mm)
Temperature groups several 0.04 0.2 0.4 1
1 is uneven
2 is uneven
500 degree, 3 uneven (Celsius) 4 still can be uneven uneven
5 Shang Keshangkeshangkeshang can
But 6 one's likes or preferences Shang Keshang can
1 is uneven
2 uneven uneven uneven uneven 1000 degree, 3 Shang Keshangkeshangkeshang can (Celsius) 4 Shang Keshangkeshangkeshang can
5 one's likes or preferences can carefully
6 carefully
1 is uneven
2 Shang Keshangkeshang can uneven 1500 degree, 3 good one's likes or preferences can uneven (Celsius) 4 one's likes or preferences can carefully
5 carefully
6 carefully
From table three data as can be known, under supercritical temperature through repeatedly vertical, horizontal stretch, expansion, even all can prepare membrane under relatively lower temp, quality is also better relatively.
Claims (6)
1, a kind of preparation method of polytetrafluoroethylporous porous membrane is characterized in that may further comprise the steps:
A, batching: PTFE is added an amount of extrusion aid and additive, stir evenly;
B, pre-molding: the PTFE powder is pressed into blank in advance at 50～60 ℃:
C, pushing: blank is squeezed into strip at 50～60 ℃;
D, calendering: under uniform temp, strip is rolled into cummerbund;
E, drying: extrusion aid is removed clean at 100～300 ℃;
F, stretching: at 300～350 ℃ belt is carried out longitudinal stretching, make it to become base band:
G, expansion: base band is carried out lateral magnification, and repeatedly typing promptly becomes the PTFE perforated membrane.
2, the preparation method of polytetrafluoroethylporous porous membrane as claimed in claim 1 is characterized in that described expansion temperature is-20～1500 ℃, and expansion typing number of times is more than secondary, below ten times.
3, the preparation method of polytetrafluoroethylporous porous membrane as claimed in claim 1 is characterized in that described additive can be inorganic salts and inorganic oxide and pigment, and addition is ten thousand of total batching/to 1 15.
4, the preparation method of polytetrafluoroethylporous porous membrane as claimed in claim 4 is characterized in that described inorganic salts can be the salt of periodic table of elements I A family and II A family metal.
5, the preparation method of polytetrafluoroethylporous porous membrane as claimed in claim 4 is characterized in that described inorganic oxide can be zinc oxide, aerosil, magnesia and precipitated calcium carbonate.
6, the prepared polytetrafluoroethylporous porous membrane of the preparation method of polytetrafluoroethylporous porous membrane as claimed in claim 1 is characterized in that the elasticity of described film obtains with the expansion typing method, and the Air permenbility of film is greater than 6000 gram/rice
2My god, hydrostatic pressing is greater than 7000 millimeters of water, and 2 hours are non-leakage, and the water feeler is greater than 90 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97102948 CN1061725C (en) | 1997-03-06 | 1997-03-06 | Water-proof air-permeable fabric and producing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97102948 CN1061725C (en) | 1997-03-06 | 1997-03-06 | Water-proof air-permeable fabric and producing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1193060A CN1193060A (en) | 1998-09-16 |
| CN1061725C true CN1061725C (en) | 2001-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 97102948 Expired - Fee Related CN1061725C (en) | 1997-03-06 | 1997-03-06 | Water-proof air-permeable fabric and producing method thereof |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5899534B2 (en) * | 2010-06-24 | 2016-04-06 | ディーエスエム アイピー アセッツ ビー．ブイ． | Waterproof breathable composite material capable of manufacturing articles such as flexible membranes |
| CN102103088A (en) * | 2010-12-27 | 2011-06-22 | 山东省科学院海洋仪器仪表研究所 | Device and method for measuring water quality chemical oxygen demand by ozone method for acquiring total light intensity |
| CN102765237B (en) * | 2011-05-05 | 2015-07-08 | 常州市泛亚微透科技有限公司 | Waterproof ventilated membrane for car light and manufacturing method thereof |
| CN104130401B (en) * | 2013-05-01 | 2018-05-29 | 英威达纺织（英国）有限公司 | Operation pressure control in nylon synthesis |
| CN106139918A (en) * | 2015-04-16 | 2016-11-23 | 青岛远东富隆新材料有限公司 | A kind of production method of polytetrafluoroethylhollow hollow fiber pipe |
| CN108078032A (en) * | 2016-11-22 | 2018-05-29 | 上海赤坡实业有限公司 | A kind of processing method of mackintosh |
| CN110054855B (en) * | 2019-02-18 | 2021-10-15 | 浙江格尔泰斯环保特材科技股份有限公司 | Polytetrafluoroethylene bubble point membrane and preparation method thereof |
| CN110373917A (en) * | 2019-07-26 | 2019-10-25 | 际华三五四二纺织有限公司 | A kind of waterproof and breathable shell fabric and preparation method thereof |
| CN113492565A (en) * | 2020-03-19 | 2021-10-12 | 赛恩斯(北京)科技发展有限公司 | High-strength high-breathability fabric |
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