CN104691030A - Waterproof flexible water-vapor-permeable composite material as well as forming method and application thereof - Google Patents
Waterproof flexible water-vapor-permeable composite material as well as forming method and application thereof Download PDFInfo
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- CN104691030A CN104691030A CN201510068996.4A CN201510068996A CN104691030A CN 104691030 A CN104691030 A CN 104691030A CN 201510068996 A CN201510068996 A CN 201510068996A CN 104691030 A CN104691030 A CN 104691030A
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- microporous polymer
- flexible water
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- 239000002131 composite material Substances 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical group O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229920006254 polymer film Polymers 0.000 claims abstract description 28
- 229920000642 polymer Polymers 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 21
- 239000002648 laminated material Substances 0.000 claims abstract description 8
- 230000008569 process Effects 0.000 claims abstract description 6
- 239000010410 layer Substances 0.000 claims description 50
- -1 Merlon Polymers 0.000 claims description 15
- 239000000243 solution Substances 0.000 claims description 13
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 12
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 12
- 229920002635 polyurethane Polymers 0.000 claims description 12
- 239000004814 polyurethane Substances 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 11
- 229920001577 copolymer Polymers 0.000 claims description 6
- 239000013047 polymeric layer Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 239000002202 Polyethylene glycol Substances 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 4
- 230000001476 alcoholic effect Effects 0.000 claims description 4
- 229920002313 fluoropolymer Polymers 0.000 claims description 4
- 239000004811 fluoropolymer Substances 0.000 claims description 4
- 229920001223 polyethylene glycol Polymers 0.000 claims description 4
- 229920000098 polyolefin Polymers 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 229920001451 polypropylene glycol Polymers 0.000 claims description 4
- 239000006185 dispersion Substances 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 239000004952 Polyamide Substances 0.000 claims description 2
- 239000004695 Polyether sulfone Substances 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 229920002125 Sokalan® Polymers 0.000 claims description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 2
- 239000002280 amphoteric surfactant Substances 0.000 claims description 2
- 239000003945 anionic surfactant Substances 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 230000001680 brushing effect Effects 0.000 claims description 2
- 239000003093 cationic surfactant Substances 0.000 claims description 2
- 238000011049 filling Methods 0.000 claims description 2
- 238000005470 impregnation Methods 0.000 claims description 2
- 239000004816 latex Substances 0.000 claims description 2
- 229920000126 latex Polymers 0.000 claims description 2
- 229920001467 poly(styrenesulfonates) Polymers 0.000 claims description 2
- 229920002492 poly(sulfone) Polymers 0.000 claims description 2
- 229920002401 polyacrylamide Polymers 0.000 claims description 2
- 239000004584 polyacrylic acid Substances 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- 229920006393 polyether sulfone Polymers 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 229960002796 polystyrene sulfonate Drugs 0.000 claims description 2
- 239000011970 polystyrene sulfonate Substances 0.000 claims description 2
- 239000011118 polyvinyl acetate Substances 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 239000004094 surface-active agent Substances 0.000 claims description 2
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 2
- 239000004744 fabric Substances 0.000 abstract description 7
- 238000002360 preparation method Methods 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 description 11
- 238000000576 coating method Methods 0.000 description 11
- 230000010148 water-pollination Effects 0.000 description 8
- SCVFZCLFOSHCOH-UHFFFAOYSA-M potassium acetate Chemical compound [K+].CC([O-])=O SCVFZCLFOSHCOH-UHFFFAOYSA-M 0.000 description 4
- 210000004243 sweat Anatomy 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920005749 polyurethane resin Polymers 0.000 description 2
- 235000011056 potassium acetate Nutrition 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 238000003855 Adhesive Lamination Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000000502 dialysis Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000013008 moisture curing Methods 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 150000003460 sulfonic acids Polymers 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
- 230000004584 weight gain Effects 0.000 description 1
- 235000019786 weight gain Nutrition 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/02—Layered materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/724—Permeability to gases, adsorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/73—Hydrophobic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2437/00—Clothing
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a waterproof flexible water-vapor-permeable composite material as well as a forming method and application thereof. The composite material comprises a microporous polymer film layer a, an airtight polymer layer b and a microporous polymer film layer c, wherein the microporous polymer film layer a is waterproof and water-vapor-permeable; the airtight polymer layer b is water-vapor permeable; the microporous polymer film layer c is water-vapor-permeable and hydrophilic. The forming method comprises the steps that the airtight polymer layer b is adhered to one side of the microporous polymer film layer a; the microporous polymer film layer c is adhered to the other side of the microporous polymer film layer a to form the three layer laminated material. The composite material is high in water-vapor-permeable performance and is laminated on one or two sides of a fabric layer to form clothing with the waterproof water-vapor-permeable composite material. The material has wide application on clothing and industries and is simple in process, and the preparation materials are easily available.
Description
Technical field
The present invention relates to flexible composite, particularly a kind of flexible water vapor pervious composite and forming method thereof and application.
Background technology
Material for raincoat is known, and they have one deck foaming expanded microporous polytetra fluoroethylene-EPTEE (ePTFE) or porous polypropylene, see the United States Patent (USP) 4,194,041 of Gore etc. or the United States Patent (USP) 4,969,998 of Henn.At the United States Patent (USP) 3,953 of Gore, the foaming micropore waterproof polytetrafluoroethylmaterial material disclosed in 566 is specially adapted to this purposes.It is waterproof, but sweat can be made to pass through.Polyurethanes and other polymer also can be used for this purposes.In order to the material being used in fabric aspect (textile sector) has good pliability, described microporous layers should obtain thin as far as possible.But film compares thin-pass and performance often can be caused to reduce, and the thin danger that there is water proofing property and decline of coating.
United States Patent (USP) 4,194,041 refer to use other coating on microporous polymer, and this coating is based thin airtight coating, and it is made up of polyether-polyurethane or poly-perfluorinated sulfonic acid, transports vapour molecule by diffusion.The coating using this thin is to reduce surfactant and pollutant through polymer.Due to the chemical constitution of polymer, this single coating over the microporous structure demonstrates the ability (high water vapor permeability) of high transport hydrone by polymeric material.This film should obtain thin as far as possible, not affect pliability, and provides sufficient protection to composite.And for thicker single film, water vapor permeability reduces greatly.
United States Patent (USP) 4,969, discloses a class composite membrane in 998.In this film, in the outer field hole of inner part infiltration into microporous.As the outer field material of micropore, refer to microporous foam polytetrafluoroethylene (PTFE).As internal layer, refer to polyethers-polythiaether.A rear material is inserted in the hole of microporous layers to a certain extent, but be all the time sealing, unbodied and atresia.It is reported, the moisture vapor permeable rate of this composite is higher than the moisture vapor permeable rate of above-mentioned laminated material.But when this composite is used as the weaving laminated material of raincoat, find to form a large amount of sweat under great exercise load, the latter can not be dissipated in the environment and not have residue.Remain in sweat in clothes for good sense of touch with comfortable and easy to wearly have bad impact.
Summary of the invention
For the deficiencies in the prior art, the object of the present invention is to provide a kind of flexible water vapor pervious composite and its preparation method and application.
For realizing aforementioned invention object, the technical solution used in the present invention comprises:
A composite for flexible water vapor pervious, it comprises:
Microporous polymer film layer a, this polymer is waterproof and moisture vapor permeable;
Airtight polymeric layer b, this layer of moisture vapor permeable;
Microporous polymer film layer c, it is moisture vapor permeable and hydrophilic;
Described airtight polymeric layer b sticks to the one side of described microporous polymer film layer a, and described microporous polymer film c adheres to the opposite side of described microporous polymer film layer a.
In order to obtain pliability, these layers should be thin.
Microporous polymer has the hole penetrating internal structure, forms the interconnective continuous print gas passage from one side to another side.Have now found that, when use in clothes containing the composite of layer c and this layer in the inside time, moisture vapor permeable rate from the inside to surface is unexpectedly greater than other not containing the moisture vapor permeable rate of one of 3-layer composite material of hydrophilic layer.This astonishing phenomenon may be due to when interface existing water, the cause that the moisture vapor permeable rate of intermediate layer b increases with extra proportion.The effect with the micropore internal layer of hydrophilicity resembles sponge kind, absorb the sweat formed, and interspersed among on larger surface area, boundary layer is easily passed through to the single hydrone on diffusion inside layer, or enter solution with higher concentration, therefore move quickly or diffuse to outside, microporous layers (c) can be natively have hydrophilic, or using known method to give, it is hydrophilic
Further, the microporous polymer of described layer a is selected from fluoropolymer, polyolefin, polyamide, polyester, polysulfones, polyether sulfone, Merlon, polyurethane and composition thereof, described fluoropolymer comprises polytetrafluoroethylene (PTFE) or Kynoar, described polyolefin, as polyethylene or polypropylene.Preferably, the microporous polymer of described layer a is selected from polytetrafluoroethylene (PTFE).
Preferably, layer b is polyurethane.
The present invention with one of embodiment, a kind of method forming the composite of flexible water vapor pervious described in above-mentioned any one, it comprises the following steps:
(1) moisture vapor permeable but the microporous polymer film a of waterproof is formed;
(2) the airtight but polymer b of moisture vapor permeable is formed;
(3) moisture vapor permeable and hydrophilic microporous polymer film c is formed;
(4) by these polymer-bonded laminated materials forming three layers together.
Further, described vapor pervious and hydrophilic microporous polymer film c are selected from the copolymer of tetrafluoroethene and vinyl acetate, polyacrylic acid and copolymer, polyacrylamide and copolymer thereof, polyvinyl acetate (PVA), poly styrene sulfonate, polyethylene glycol (PEG), polypropylene glycol (PPG), hydrophilic polysiloxane; The aqueous solution of the complex of anion, cation, nonionic or amphoteric surfactant or mixture and above-mentioned substance, alcoholic solution or water/alcoholic solution.
One of another embodiment of the present invention, a kind of method forming the composite of flexible water vapor pervious described in above-mentioned any one, is characterized in that it comprises the following steps:
(1) moisture vapor permeable but the microporous polymer film a of waterproof is formed;
(2) the airtight but polymer b of moisture vapor permeable is formed;
(3) moisture vapor permeable is formed and through the microporous polymer film c of hydrophilic material process;
(4) by these polymer-bonded laminated materials forming three layers together.
Further, with hydrophilic material carry out processing be by by this material with the liquid melt as this material, or solution or latex dispersions surface impregnation are in described liquid, or described liquid applicator, spraying, roller coat or brushing are completed on surface, use the inner surface being performed until this microcellular structure coated, but this liquid of Kong Zhongwei filling, because otherwise will destroy or greatly reduce the vapor pervious performance of this layer.Therefore, the existence of hydrophilic material does not almost affect porosity; In other words, the wall of microporous polymer mesopore is limited preferably only with very thin described material coating.Using of this material in various solution or dispersion concentration, solids content and/or can be carried out at various temperature or pressure.
Clothes containing above-mentioned flexible water vapor pervious composite.
Further, described flexible water vapor pervious composite layer is pressed on the one or both sides of tissue layer.
Compared with prior art, advantage of the present invention comprises:
(1) composite of the present invention can be laminated to the one or both sides of fabric, and the material obtained can be used for manufacturing waterproof but the clothes of moisture vapor permeable, then raincoat and sportswear etc. have extensive use above;
(2) this composite also can be used for other industrial circle, and it can be used for removing low-molecular-weight molecule from solution, distillate, sewage concentration liquid, inspissated juice or living things system, also can be used for dialysis field;
(3) first the fabric of the present invention moisture content that passing hole is infiltrated from the inside will form water droplet, but, this water droplet is admitted to this internal layer again by capillary force, and send into intermediate layer b, on this surface, water distribution surface and be " transformed " into steam discharge, make this composite have pore but do not cause leak.
Detailed description of the invention
In view of deficiency of the prior art, inventor, through studying for a long period of time and putting into practice in a large number, is proposed technical scheme of the present invention.To be further explained this technical scheme, its implementation process and principle etc. as follows.
By any one method in multiple method by air-locked polymeric layer b and polymeric layer a and c compound.Air-locked polymer can the liquid state of liquid mixture be used, or can solid-state sheet form use.If this polymer is the form with thin slice, then by making these thin slices by nip rolls or using the adhesive that can suck it is laminated to oleophobic property diaphragm.The suitable polymer for layer (b) has vapor pervious but the polyurethane of air proof.It can carry out precrosslink or be cross-linked after using.Microporous layers c can carry out pretreatment, makes it have hydrophily.This can carry out before or after layer b is fixing.
Manufacture in the method for 3-layer composite material a kind of, use roll coater that the polyurethane resin of precrosslink is applied to first ePTFE film together with curing agent, this coating weight can be, such as, and 10 grams/m.Then use another sheet micropore ePTFE layer, the layer engaged by the method is sent into the slit between two pressure rollers, make the resin be cross-linked not yet completely be pressed into certain degree and enter microcellular structure and infiltrate in hole.But as described in DE-PS2925318, this polyurethane resin can be used as finished films and first adheres to one deck.Then through above-mentioned process, a microporous film layer c is made to have hydrophily.
The thickness of ePTFE layer used, density and aperture can be different according to purposes.
Method of testing
Gas permeability/air impermeability-Gurley number measures
Gurley number is obtained by following method:
By the resistance to air flow property of Gurley densometer (ASTM D726-58) working sample that W. & L.E.Gurley & Sons manufactures.Report the result according to Gurley number, this result is when the pressure drop of water is 1.205 thousand Ns/square metre, and the air of 100 cubic centimetres flows through 6.8 square centimeters of test specimens time (second) used.If do not observe gas to flow through in 150 seconds, then this material is air-locked.
MVTR test (MVTR)
In the method, the solution that about 75 milliliters are made up of 35 parts by weight of potassium acetate and 15 weight portion distilled water is put into the 135 ml polypropylene cups that internal diameter is 7.5 centimetres.With the United States Patent (USP) 4 authorizing Crosby, 862, expanded polytetrafluoroethyl(ne (PTFE) the film thermal sealing that method described in 730 uses the minimum MVTR that records every 24 hours of potassium acetate to be about 60000 grams/m containing the rim of a cup of this solution, to form the micro-pore septum of the leakproof of tightening.Use controlled temperature rolls and circulator bath, the temperature of water bath device is controlled at 25 DEG C ± 0.2 DEG C.Before measurement, make testing sample be in 25 DEG C temperature and 50% relative humidity under.Place sample, making microporous polymer film to be measured and water-bath surface contact, before putting into cup assembly, to there being the laminated material of fabric at least to balance 15 minutes, 15 minutes at least being balanced to film composite material.This cup assembly is weighed and is accurate to 1/1000 gram, and be upside down in the middle part of test sample.By the motive force between the water in water-bath and saturated salt solution, provide current in the diffusion of this direction and carry water.Sample determination 15 minutes, then takes out this cup assembly and again weighs.Calculate MVTR by cup assembly weight gain, and represent with the grams of every 24 hours every square metre of sample area water.
embodiment 1
Expanded microporous polytetra fluoroethylene-EPTEE (PTFE) thin layer that two panels foamed forces together and prepares composite.The normal pore size of this two panels PTFE film is 0.28 micron, and weight is about 25 grams/m, and thickness is 45 microns.In order to (can suck) polyurethane (PUR) of lamination vapor pervious, use United States Patent (USP) 4,942, MDI prepolymer described in 214 and alkylene oxide, and use the microcellular structure that roll coating device makes its part infiltration first film, then use PUR as second film of the adhesive lamination between two nip rolls.At room temperature after moisturecuring PUR, by the one side of above-mentioned laminated film coating U.S. Patent No. 5,209, the polymer solution described in 850, makes micropore PTFE have hydrophily (depositing=4 grams/m).After drying, the one side of the composite obtained becomes transparent after being immersed in the water.
First make the undressed one side of barrier film in the face of water, then make the hydrophily one side of barrier film in the face of water, measure the MVTR of this composite.
For undressed one side, every MVTR recorded for 24 hours is 29000 grams/m, and for the hydrophily one side in the face of water, every MVTR recorded for 24 hours is 78000 grams/m.
embodiment 2
Before using hydrophilic coating, the method for pointwise bonding is adopted the composite layer of embodiment 1 to be pressed in the one side of 120 grams/m of polyester textiles.After the method, the one side not being laminated to fabric is that the polymer described in 850 gives hydrophilic hydrophily PUR coating (depositing=4 grams/m) by U.S. Patent No. 5,209.
For the fabric one side in the face of water, every MVTR recorded for 24 hours is 7800 grams/m, and for the hydrophilic film one side in the face of water, every MVTR recorded for 24 hours is 25000 grams/m.
embodiment 3
Obtaining composite by method in the same manner as in Example 1, is commercially available antifog spray is applied to one side unlike hydrophily process.For undressed one side, every MVTR recorded for 24 hours is 30000 grams/m, and for the hydrophily one side in the face of water, every MVTR recorded for 24 hours is 80000 grams/m.
Should be appreciated that above-described embodiment is only and technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (9)
1. a composite for flexible water vapor pervious, is characterized in that it comprises:
Microporous polymer film layer a, this polymer is waterproof and moisture vapor permeable;
Airtight polymeric layer b, this layer of moisture vapor permeable;
Microporous polymer film layer c, it is moisture vapor permeable and hydrophilic;
Described airtight polymeric layer b sticks to the one side of described microporous polymer film layer a, and described microporous polymer film c adheres to the opposite side of described microporous polymer film layer a.
2. the composite of flexible water vapor pervious as claimed in claim 1, is characterized in that the microporous polymer of described layer a layer is selected from fluoropolymer, polyolefin, polyamide, polyester, polysulfones, polyether sulfone, Merlon, polyurethane and composition thereof; Described fluoropolymer comprises polytetrafluoroethylene (PTFE) or Kynoar, and described polyolefin comprises polyethylene or polypropylene.
3. the composite of flexible water vapor pervious as claimed in claim 1, is characterized in that layer b is polyurethane.
4. form a method for the composite of flexible water vapor pervious described in any one of claim 1-3, it is characterized in that it comprises the following steps:
(1) moisture vapor permeable but the microporous polymer film a of waterproof is formed;
(2) the airtight but polymer b of moisture vapor permeable is formed;
(3) moisture vapor permeable and hydrophilic microporous polymer film c is formed;
(4) by these polymer-bonded laminated materials forming three layers together.
5. the method for the composite of formation flexible water vapor pervious according to claim 4, it is characterized in that described vapor pervious and hydrophilic microporous polymer film c is selected from the copolymer of tetrafluoroethene and vinyl acetate, polyacrylic acid and copolymer thereof, polyacrylamide and copolymer thereof, polyvinyl acetate (PVA), poly styrene sulfonate, polyethylene glycol (PEG), polypropylene glycol (PPG), hydrophilic polysiloxane, anion surfactant, cationic surfactant, the aqueous solution of the complex of non-ionic surface active agent or amphoteric surfactant or mixture and above-mentioned substance, alcoholic solution or water/alcoholic solution.
6. form a method for the composite of flexible water vapor pervious described in any one of claim 1-3, it is characterized in that it comprises the following steps:
(1) moisture vapor permeable but the microporous polymer film a of waterproof is formed;
(2) the airtight but polymer b of moisture vapor permeable is formed;
(3) moisture vapor permeable is formed and through the microporous polymer film c of hydrophilic material process;
(4) by these polymer-bonded laminated materials forming three layers together.
7. the method for the composite of formation flexible water vapor pervious according to claim 6, it is characterized in that with hydrophilic material carry out processing be by by this material with the liquid melt as this material, or solution or latex dispersions surface impregnation are in described liquid, or described liquid applicator, spraying, roller coat or brushing are completed on surface, use the inner surface being performed until this microcellular structure coated, but this liquid of Kong Zhongwei filling.
8. containing, for example the clothes of flexible water vapor pervious composite according to claim 1.
9. the clothes according to claim 8 containing flexible water vapor pervious composite, is characterized in that described flexible water vapor pervious composite layer is pressed on the one or both sides of tissue layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510068996.4A CN104691030A (en) | 2015-02-10 | 2015-02-10 | Waterproof flexible water-vapor-permeable composite material as well as forming method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510068996.4A CN104691030A (en) | 2015-02-10 | 2015-02-10 | Waterproof flexible water-vapor-permeable composite material as well as forming method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104691030A true CN104691030A (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510068996.4A Pending CN104691030A (en) | 2015-02-10 | 2015-02-10 | Waterproof flexible water-vapor-permeable composite material as well as forming method and application thereof |
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| CN (1) | CN104691030A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111941977A (en) * | 2020-08-07 | 2020-11-17 | 常州浩文塑料新材料有限公司 | Waterproof breathable film and production process thereof |
| CN112543786A (en) * | 2018-07-31 | 2021-03-23 | W.L.戈尔及同仁股份有限公司 | Polyethylene film |
| CN112543785A (en) * | 2018-07-31 | 2021-03-23 | W.L.戈尔及同仁股份有限公司 | Polyethylene film |
| CN113226524A (en) * | 2018-12-17 | 2021-08-06 | 日东电工株式会社 | Selectively permeable polymeric membranes |
-
2015
- 2015-02-10 CN CN201510068996.4A patent/CN104691030A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112543786A (en) * | 2018-07-31 | 2021-03-23 | W.L.戈尔及同仁股份有限公司 | Polyethylene film |
| CN112543785A (en) * | 2018-07-31 | 2021-03-23 | W.L.戈尔及同仁股份有限公司 | Polyethylene film |
| CN112543785B (en) * | 2018-07-31 | 2023-02-17 | W.L.戈尔及同仁股份有限公司 | Polyethylene film |
| CN113226524A (en) * | 2018-12-17 | 2021-08-06 | 日东电工株式会社 | Selectively permeable polymeric membranes |
| CN111941977A (en) * | 2020-08-07 | 2020-11-17 | 常州浩文塑料新材料有限公司 | Waterproof breathable film and production process thereof |
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