CN1844241A - Composition of polyurethane permeable microporous thin layer and method for making same - Google Patents
Composition of polyurethane permeable microporous thin layer and method for making same Download PDFInfo
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- CN1844241A CN1844241A CN 200510063452 CN200510063452A CN1844241A CN 1844241 A CN1844241 A CN 1844241A CN 200510063452 CN200510063452 CN 200510063452 CN 200510063452 A CN200510063452 A CN 200510063452A CN 1844241 A CN1844241 A CN 1844241A
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Abstract
The invention discloses a polyurethane permeability microporous cave thin layer component and its manufacturing process, which consists of successively adding more than two solvents into the polyurethane resin of 10-50 mass %, in which the solvents consist of mixed solvents of high boiling point solvent and low-and-moderate boiling point solvent and mixed solvents of strong solvent and weak-and-moderate solvent, and stirring them with a mechanical strength; then supplementally treating with interfacial active agent and bridge agent to construct a component. The said component is dried under different thermostages after being applied to prepare the said permeability microporous cave thin layer, which has good air permeable waterproofing and adhesive ability with the textile, and can not expand because of moisture absorption.
Description
Technical field
The present invention is the application of relevant a kind of urethane (PU) resin material, particularly about a kind of constituent and thin layer manufacture method thereof of polyurethane permeable microporous thin layer.
Background technology
For Waterproof Breathable, can cover the last layer film, and hydrophilic urethane (PU) resin material is to use in the quite general material of Waterproof Breathable dry type coated textiles on the general fabrics.
This polyurethane film is to conduct moisture content with chemical functional group, and the fabric that covers the urethane resin film has multiple processing mode, and for example: behind coating following layer on the fabric, the adhesive again glazer (Calender) of going up rolls the polyurethane film that; Or fabric with separate-type paper elder generation coated thin film after, coated following layer and adhesive again, or, also can directly stick the processing modes such as film that blow out moulding at fabric face at direct coated surface film behind the coating following layer earlier on the fabric with fabric.
Yet, no matter be which kind of processing mode, because this kind urethane resin can't obtain the high ventilation characteristic, therefore can be comparatively sultry in the dress, and the resin of coating layer can be because expand after the moisture absorption, make the characteristic of its rub resistance to disappear, and the adhesion between urethane resin and the fabric also have the situation generation of decline.
Supervise in this, the present invention is at above-mentioned puzzlement, propose a kind of constituent and manufacture method thereof of polyurethane permeable microporous thin layer, it is the technological trend that can satisfy present specific functionality fabric, the awkward situation that also can avoid known wet industry fabric easily to come unstuck because of water simultaneously.
Summary of the invention
Main purpose of the present invention is that a kind of constituent of polyurethane permeable microporous thin layer is being provided, its structure is to have the high ventilation sexual demand, do not keep aqueous vapor in fabric, and itself does not have the situation because of expanding after the moisture absorption, so known thin layer and fabric can also be overcome fully because of the problem that water causes adhesion to descend, so the adhesion between thin layer of the present invention and fabric well and meet the air permeable waterproof functional requirement.
Another object of the present invention is that a kind of manufacture method of polyurethane permeable microporous thin layer is being provided, it is a solvent of constituent being removed in batches heterogeneity after being coated with by the baking in differing temps district, to make the functional fabric of a tool thin layer, this fabric has the high ventilation water-repellancy, and good rub resistance characteristic being arranged under full wet environment, be difficult for coming unstuck because of moist, is a splendid outdoor functional fabric.
For reaching above-mentioned purpose, the present invention is a kind of constituent of polyurethane permeable microporous thin layer, it is characterized in that, comprising:
One contains the urethane resin of weight percent 10% to 50%;
A spot of interfacial agent, it is to mix in this urethane resin; And
Solvent composition more than at least two kinds, it is respectively mixed solvent by high boiling solvent and middle low boiling point solvent, and strong solvent and in the mixed solvent of weak property solvent form, and this high boiling solvent with should in low boiling point solvent be to mix with 10: 1 to 1: 10 weight percent, and this strong solvent with this in weak property solvent be to mix with 10: 1 to 1: 10 weight percent.
Wherein this urethane resin is to be the polyethers urethane resin.
Wherein interfacial agent is to be emulsifying agent.
Wherein this high boiling solvent is made up of one of them the solvent at least that contains colony that dimethyl amide, dimethyl ethanamide, N-methyl-2-Pyrrolidine ketone, hexanaphthene, hexalin, pimelinketone form.
Wherein should in low boiling point solvent formed by one of them the solvent at least that contains colony that water, ethanol, methyl alcohol, dimethylbenzene, toluene, butanone and acetone forms.
Wherein this strong solvent is made up of one of them the solvent at least that contains colony that dimethyl ethanamide, dimethyl amide, N-methyl-2-Pyrrolidine ketone, butanone, acetone form.
Wherein should in weak property solvent formed by one of them the solvent at least that contains colony that toluene, dimethylbenzene, hexanaphthene, hexalin, pimelinketone, methyl alcohol, ethanol and water forms.
Wherein also comprise a bridging agent, make this urethane resin form crosslinking structure with this.
Wherein this bridging agent is to be selected from isophorone diisocyanate, hexa-methylene diisocyanate, ditan-4, one of them diisocyanate class bridging agent of forming at least of 4 '-diisocyanate and toluene di isocyanate etc.
Wherein this at least two solvent is to add in this urethane resin in batches, mix with the mechanical shear stress brute force, and be aided with the micella coating that this interfacial agent produces micelle, and be homogeneous phase or the constituent that only presents microphase-separated with fully emulsified.
The special additive that wherein also can add an antibacterial mildew inhibitor, natural chitin, flame retardant etc.
The manufacture method of a kind of polyurethane permeable microporous thin layer of the present invention is characterized in that, it is to comprise the following steps:
Contain in the urethane resin of weight percent 10% to 50% one and to mix interfacial agent, and add the mixed solvent of forming by high boiling solvent and middle low boiling point solvent one by one, and by strong solvent with at least two kinds the solvent of mixed solvent of weak property solvent composition, mix with the mechanical shear stress brute force, and be aided with the micella coating that this interfacial agent produces micelle, be homogeneous phase or the coating constituent that only presents microphase-separated with fully emulsified; And
This constituent is coated on the fabric, and removes the solvent of different components in batches, so that on this fabric, form thin layer with microvoid structure by the baking of differing temps.
Wherein this urethane resin is to be the polyethers urethane resin.
Wherein interfacial agent is to be emulsifying agent.
Wherein this high boiling solvent is made up of one of them the solvent at least that contains colony that dimethyl amide, dimethyl ethanamide, N-methyl-2-Pyrrolidine ketone, hexanaphthene, hexalin, pimelinketone form.
Wherein should in low boiling point solvent formed by one of them the solvent at least that contains colony that water, ethanol, methyl alcohol, dimethylbenzene, toluene, butanone and acetone forms.
Wherein this strong solvent is made up of one of them the solvent at least that contains colony that dimethyl ethanamide, dimethyl amide, N-methyl-2-Pyrrolidine ketone, butanone, acetone form.
Wherein should in weak property solvent formed by one of them the solvent at least that contains colony that toluene, dimethylbenzene, hexanaphthene, hexalin, pimelinketone, methyl alcohol, ethanol and water forms.
Wherein in this constituent, more can add a bridging agent, make this urethane resin form the crosslinking structure of strengthening.
Wherein this bridging agent is to be selected from isophorone diisocyanate, hexa-methylene diisocyanate, ditan-4, one of them diisocyanate class bridging agent of forming at least of 4 '-diisocyanate and toluene di isocyanate etc.
Wherein the thickness of this thin layer is between 80 to 600 microns, and the pore size on this thin layer is between 0.05 to 1.0 micron.
Wherein the processing mode of this this constituent of coating be can be selected from the roller bearing upper blade, the coating method of the scraper that swims, roller bearing coating is coated on this fabric.
Description of drawings
Under cooperate appended accompanying drawing to illustrate in detail by specific embodiment, when the effect that is easier to understand purpose of the present invention, technology contents, characteristics and is reached, wherein:
Fig. 1 allocates the schematic flow sheet of coating with constituent for the present invention.
Fig. 2 is machined in constituent the schematic flow sheet that forms laminate structure on the fabric for the present invention.
Embodiment
Selected main resin is polyethers (polyether) urethane (PU) resin in the constituent of the present invention, it is to be that four polymeric polyalcohols more than the carbon are polymerized by repeating unit, resin after polymerization is finished, mix stirring with the composition and the order that cooperate, its virgin resin weight percent accounts for 10～50 weight percents (%) in whole constituent; In addition, and in urethane resin, be mixed with interfacial agents such as emulsifying agent, step S10 as shown in Figure 1 makes urethane resin be able to when Weak solvent exists, and is coated by micella with complete or incomplete emulsified state to present homogeneous phase or microphase-separated with Weak solvent and deposit.
Then, shown in step S12 and step S14, successively add the solvent composition more than two kinds again, respectively by the mixed solvent of high boiling solvent and middle low boiling point solvent, and strong solvent and in the mixed solvent of weak property solvent form, this high boiling solvent and middle low boiling point solvent are to mix with 10: 1～1: 10 weight percent, and this strong solvent with in weak property solvent be to mix with 10: 1～1: 10 weight percent, add in the urethane resin one by one this two mixed solvent in batches, mix with the mechanical shear stress brute force, assistant coats with the micella that the interfacial agent in the urethane resin produces micelle, make constituent can be fully emulsified for homogeneous phase or only present the microphase-separated phenomenon, and be unlikely to present obvious being separated of easily seeing.Wherein, it is by containing dimethyl amide (N that high boiling solvent is formed, N-dimethyl-formamide, DMF), dimethyl ethanamide (N, N-dimethyl-acetamide, DMAc), N-methyl-2-Pyrrolidine ketone (N-methyl-2-pyrrolidone, NMP), one or more the solvent selected of the colony that formed of hexanaphthene (Cyclohexane), hexalin (Cyclohexanol) and pimelinketone (Cyclohexanone); In low boiling point solvent form be by contain water, ethanol (Ethanol), methyl alcohol (Methanol), dimethylbenzene (Xylene), toluene (Toluene), butanone (Methyl acetone, MEK), one or more the solvent selected of the colony that formed of acetone (Acetone); It is by containing dimethyl ethanamide (N that strong solvent is formed, N-dimethyl-acetamide, DMAc), dimethyl amide (N, N-dimethyl-formamide, DMF), N-methyl-2-Pyrrolidine ketone (N-methyl-2-pyrrolidone, NMP), butanone (Methyl acetone, MEK), one or more the solvent selected of the colony that formed of acetone (Acetone); In weak property solvent composition by one or more the solvent that contains that colony that toluene (Toluene), dimethylbenzene (Xylene), hexanaphthene (Cyclohexane), hexalin (Cyclohexanol), pimelinketone (Cyclohex-anone), methyl alcohol (Methanol), ethanol (Ethanol), water forms selects.
Then shown in step S16, the bridging agent that adds the diisocyanate class in urethane resin in stirring and the solvent, for example: isophorone diisocyanate (IPDI), hexa-methylene diisocyanate (HDI), ditan-4,4 '-diisocyanate (4,4-methylene di-p-phenylene isocyanate, MDI) or toluene di isocyanate (toluene-2,4-diisocyanate, one or more blended compounds of selecting in TDI); This bridging agent can make the crosslinked urethane resin that makes of molecular chain form crosslinking structure, produces bigger molecular weight and reaches the firmer opening porous cascaded structure that declines with the intensity of the thin layer that increases follow-up formation.
In addition, thin layer also can add antibacterial mildew inhibitor if must reach the antibacterial and mouldproof grade, or adds a certain amount of above natural chitin, also can reach identical effect; If thin layer must reach anti-combustion grade, then can add flame retardant in wherein; Therefore, in step S18, can comply with different functional requirements, in this step, add special additive and stir, so, can shown in step S20, be deployed into the constituent of a coating usefulness, with as the coating fluid of coating on the fabric.
After preparation obtains as the constituent of coating fluid, continue with reference to shown in Figure 2, carry out the procedure for processing of thin layer.At first, shown in step S 22, utilize the coating method of general roller bearing upper blade (knife onroll), the scraper that swims (knife on air), roller bearing coating (roll coating), coating is coated on the fabric under 60～160 ℃ temperature with constituent, and the thickness of coating is between 80～600 microns (mm); For another example shown in the step S24, drying is toasted by the time of passing through of the baking oven in differing temps interval in the coating back, to remove the solvent of different components in batches, so that the pore size size that makes the urethane thin layer that step S 26 obtains is between 0.05 μ m～1.0 μ m, and itself and have balanced good film-forming properties and flexibility.Under the control of temperature and time, in step S28, bridging agent in the constituent is urethane resin can be formed crosslinking structure, produces intensity and the firmer open micropore cascaded structure of bigger molecular weight to increase thin layer, to make the functional fabric finished product of step S30.
Wherein, has Water Vapour Permeability 3000g/m according to the above-mentioned air permeable waterproof fabric that manufacture method obtained
2More than/the Day, water pressure resistance 3000mm.H
2The excellent properties that O is above, and the fabric of using this kind constituent can be reached the demand of the high amount of exercise fabric of new kenel.
The urethane resin constituent that the present invention uses is mainly complete or incomplete emulsive multi-solvent and forms the homogeneous phase resin, and adding bridging agent, after utilizing the different steps temperature drying to remove solvent after the coating, can obtain good open micropore cascaded structure in batches, this structure can obtain the high ventilation sexual demand, does not keep aqueous vapor in fabric; Be the polyethers urethane resin because of the resin material simultaneously, it is that to select repeating unit for use be four carbon and above ethers thereof, so itself also can take place invariably because after the moisture absorption and the expansible situation, so can be overcome fully because of the problem that water causes adhesion to descend between resin and fabric.Therefore the adhesion between formed thin layer of constituent of the present invention and fabric is good and meet the air permeable waterproof functional requirement, also just can satisfy the technological trend of present specific functionality fabric, the awkward situation that can avoid known wet industry fabric easily to come unstuck simultaneously because of water.
Above-described embodiment only is for technological thought of the present invention and characteristics are described, its purpose makes the personage who has the knack of this technology can understand content of the present invention and is implementing according to this, when can not with qualification claim of the present invention, be that every equalization of doing according to disclosed spirit changes or modification, must be encompassed in the claim of the present invention.
Claims (22)
1, a kind of constituent of polyurethane permeable microporous thin layer is characterized in that, comprising:
One contains the urethane resin of weight percent 10% to 50%;
A spot of interfacial agent, it is to mix in this urethane resin; And
Solvent composition more than at least two kinds, it is respectively mixed solvent by high boiling solvent and middle low boiling point solvent, and strong solvent and in the mixed solvent of weak property solvent form, and this high boiling solvent with should in low boiling point solvent be to mix with 10: 1 to 1: 10 weight percent, and this strong solvent with this in weak property solvent be to mix with 10: 1 to 1: 10 weight percent.
2, the constituent of polyurethane permeable microporous thin layer as claimed in claim 1 is characterized in that, wherein this urethane resin is to be the polyethers urethane resin.
3, the constituent of polyurethane permeable microporous thin layer as claimed in claim 1 is characterized in that, wherein interfacial agent is to be emulsifying agent.
4, the constituent of polyurethane permeable microporous thin layer as claimed in claim 1, it is characterized in that wherein this high boiling solvent is made up of one of them the solvent at least that contains colony that dimethyl amide, dimethyl ethanamide, N-methyl-2-Pyrrolidine ketone, hexanaphthene, hexalin, pimelinketone form.
5, the constituent of polyurethane permeable microporous thin layer as claimed in claim 1, it is characterized in that, wherein should in low boiling point solvent formed by one of them the solvent at least that contains colony that water, ethanol, methyl alcohol, dimethylbenzene, toluene, butanone and acetone forms.
6, the constituent of polyurethane permeable microporous thin layer as claimed in claim 1, it is characterized in that wherein this strong solvent is made up of one of them the solvent at least that contains colony that dimethyl ethanamide, dimethyl amide, N-methyl-2-Pyrrolidine ketone, butanone, acetone form.
7, the constituent of polyurethane permeable microporous thin layer as claimed in claim 1, it is characterized in that, wherein should in weak property solvent formed by one of them the solvent at least that contains colony that toluene, dimethylbenzene, hexanaphthene, hexalin, pimelinketone, methyl alcohol, ethanol and water forms.
8, the constituent of polyurethane permeable microporous thin layer as claimed in claim 1 is characterized in that, wherein also comprises a bridging agent, makes this urethane resin form crosslinking structure with this.
9, the constituent of polyurethane permeable microporous thin layer as claimed in claim 8, it is characterized in that, wherein this bridging agent is to be selected from isophorone diisocyanate, hexa-methylene diisocyanate, ditan-4, one of them diisocyanate class bridging agent of forming at least of 4 '-diisocyanate and toluene di isocyanate etc.
10, the constituent of polyurethane permeable microporous thin layer as claimed in claim 1, it is characterized in that, wherein this at least two solvent is to add in this urethane resin in batches, mix with the mechanical shear stress brute force, and be aided with the micella coating that this interfacial agent produces micelle, be homogeneous phase or the constituent that only presents microphase-separated with fully emulsified.
11, the constituent of polyurethane permeable microporous thin layer as claimed in claim 1 is characterized in that, wherein also can add the special additive of an antibacterial mildew inhibitor, natural chitin, flame retardant etc.
12, a kind of manufacture method of polyurethane permeable microporous thin layer is characterized in that, it is to comprise the following steps:
Contain in the urethane resin of weight percent 10% to 50% one and to mix interfacial agent, and add the mixed solvent of forming by high boiling solvent and middle low boiling point solvent one by one, and by strong solvent with at least two kinds the solvent of mixed solvent of weak property solvent composition, mix with the mechanical shear stress brute force, and be aided with the micella coating that this interfacial agent produces micelle, be homogeneous phase or the coating constituent that only presents microphase-separated with fully emulsified; And
This constituent is coated on the fabric, and removes the solvent of different components in batches, so that on this fabric, form thin layer with microvoid structure by the baking of differing temps.
13, the manufacture method of polyurethane permeable microporous thin layer as claimed in claim 12 is characterized in that, wherein this urethane resin is to be the polyethers urethane resin.
14, the manufacture method of polyurethane permeable microporous thin layer as claimed in claim 12 is characterized in that, wherein interfacial agent is to be emulsifying agent.
15, the manufacture method of polyurethane permeable microporous thin layer as claimed in claim 12, it is characterized in that wherein this high boiling solvent is made up of one of them the solvent at least that contains colony that dimethyl amide, dimethyl ethanamide, N-methyl-2-Pyrrolidine ketone, hexanaphthene, hexalin, pimelinketone form.
16, the manufacture method of polyurethane permeable microporous thin layer as claimed in claim 12, it is characterized in that, wherein should in low boiling point solvent formed by one of them the solvent at least that contains colony that water, ethanol, methyl alcohol, dimethylbenzene, toluene, butanone and acetone forms.
17, the manufacture method of polyurethane permeable microporous thin layer as claimed in claim 12, it is characterized in that wherein this strong solvent is made up of one of them the solvent at least that contains colony that dimethyl ethanamide, dimethyl amide, N-methyl-2-Pyrrolidine ketone, butanone, acetone form.
18, the manufacture method of polyurethane permeable microporous thin layer as claimed in claim 12, it is characterized in that, wherein should in weak property solvent formed by one of them the solvent at least that contains colony that toluene, dimethylbenzene, hexanaphthene, hexalin, pimelinketone, methyl alcohol, ethanol and water forms.
19, the manufacture method of polyurethane permeable microporous thin layer as claimed in claim 12 is characterized in that, wherein more can add a bridging agent in this constituent, makes this urethane resin form the crosslinking structure of strengthening.
20, the manufacture method of polyurethane permeable microporous thin layer as claimed in claim 19, it is characterized in that, wherein this bridging agent is to be selected from isophorone diisocyanate, hexa-methylene diisocyanate, ditan-4, one of them diisocyanate class bridging agent of forming at least of 4 '-diisocyanate and toluene di isocyanate etc.
21, the manufacture method of polyurethane permeable microporous thin layer as claimed in claim 12 is characterized in that, wherein the thickness of this thin layer is between 80 to 600 microns, and the pore size on this thin layer is between 0.05 to 1.0 micron.
22, the manufacture method of polyurethane permeable microporous thin layer as claimed in claim 12 is characterized in that, wherein the processing mode of this this constituent of coating be can be selected from the roller bearing upper blade, the coating method of the scraper that swims, roller bearing coating is coated on this fabric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510063452 CN1844241A (en) | 2005-04-08 | 2005-04-08 | Composition of polyurethane permeable microporous thin layer and method for making same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200510063452 CN1844241A (en) | 2005-04-08 | 2005-04-08 | Composition of polyurethane permeable microporous thin layer and method for making same |
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| CN 200510063452 Pending CN1844241A (en) | 2005-04-08 | 2005-04-08 | Composition of polyurethane permeable microporous thin layer and method for making same |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106398176A (en) * | 2015-09-28 | 2017-02-15 | 华懋（厦门）特种材料有限公司 | Process for preparing antibacterial, mildewproof, waterproof and vapor-permeable film |
| CN108312648A (en) * | 2017-12-15 | 2018-07-24 | 合肥普尔德医疗用品有限公司 | Composite material for manufacturing elastic surgical packet and its method |
| CN110818880A (en) * | 2019-11-19 | 2020-02-21 | 江苏华大新材料有限公司 | Solvent type polyurethane resin, preparation method thereof and fluorine-free clothes with lotus leaf effect |
-
2005
- 2005-04-08 CN CN 200510063452 patent/CN1844241A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106398176A (en) * | 2015-09-28 | 2017-02-15 | 华懋（厦门）特种材料有限公司 | Process for preparing antibacterial, mildewproof, waterproof and vapor-permeable film |
| CN108312648A (en) * | 2017-12-15 | 2018-07-24 | 合肥普尔德医疗用品有限公司 | Composite material for manufacturing elastic surgical packet and its method |
| CN110818880A (en) * | 2019-11-19 | 2020-02-21 | 江苏华大新材料有限公司 | Solvent type polyurethane resin, preparation method thereof and fluorine-free clothes with lotus leaf effect |
| CN110818880B (en) * | 2019-11-19 | 2021-12-31 | 江苏华大新材料有限公司 | Solvent type polyurethane resin, preparation method thereof and fluorine-free clothes with lotus leaf effect |
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