CN103923456A - Antibacterial polyurethane film and preparation method thereof - Google Patents

Antibacterial polyurethane film and preparation method thereof Download PDF

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Publication number
CN103923456A
CN103923456A CN201410161392.XA CN201410161392A CN103923456A CN 103923456 A CN103923456 A CN 103923456A CN 201410161392 A CN201410161392 A CN 201410161392A CN 103923456 A CN103923456 A CN 103923456A
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nano titanium
polyurethane resin
polyurethane film
waterborne polyurethane
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巫永裕
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KING-TEX TECHNOLOGIES (KUNSHAN) Co Ltd
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KING-TEX TECHNOLOGIES (KUNSHAN) Co Ltd
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Abstract

The invention discloses an antibacterial polyurethane film and a preparation method thereof. The antibacterial polyurethane film comprises waterborne polyurethane resin as well as 10-30% of bamboo charcoal powder, 4-12% of nano titanium dioxide, 1-2% of extinction powder, 0.4-0.6% of a flatting agent and 0.4-0.6% of a peeling aid based on waterborne polyurethane resin, 6-14% of a silane coupling agent based on nano titanium dioxide and the balance of an organic solvent. According to the polyurethane film disclosed by the invention, by taking the waterborne polyurethane resin as a film forming matter and by compounding and adding the bamboo charcoal powder and the nano titanium dioxide into the waterborne polyurethane resin, the nano titanium dioxide is loaded in the bamboo charcoal powder, so that the antibacterial performance of the polyurethane film is good and superior to the total effect of the two which are independently used. The nano titanium dioxide and the bamboo charcoal powder are non-toxic in the antibacterial process, so that the antibacterial polyurethane film is safe to use. In addition, by optimizing the contents of the raw materials, the antibacterial polyurethane film has good waterproofness and air permeability.

Description

A kind of antibacterial polyurethane film and preparation method thereof
Technical field
The present invention relates to the technical field of polyurethane film, relate in particular to a kind of antibacterial polyurethane film and preparation method thereof.
Background technology
Polyurethane film is applied to the preparation of ready-made clothes and fashionable dress more and more in recent years, and the clothes that adopt ventilative thin polyurethane mould material to prepare not only have respiratory function, can also be antistatic; Polyurethane film in sportwear and goods with making the fabrics such as submarine armor, swim suit, rhythm clothing and air Landing clothes, Aerated water bed, ball inner bag, boat, safety buoy and material inside.Shape memory polyurethane film newly developed, there is good crystallinity, block is gathered into microcell and plays physical crosslinking point, controlling the shape of shape memory polyurethane fixes and recovers, the shape memory temperature of these shape memory polyurethanes is decided to be to room temperature, for the production of compound fabric, as home wear facework, below room temperature, can play thermal effect, more than room temperature, can there is good water vapour permeability.It is good that thermoplasticity polyurethane film has soft feel, and intensity is high, windproof ventilative, outstanding features such as environmental protection and be widely used in textile composite fabric, and for Sport & Casual, the fields such as special type protection.
For example, because the microorganisms (acarid) such as the contained more suitable bacterium of organic composition of the sweat of human body skin secretion breed under the environment of comparatively high temps.Adopt the surface of the fabric of polyurethane film can become the hotbed of microorganism, agree to cause all kinds of dermatosis.The polyurethane film of prior art is by adding wherein some chemical substances, for example N-(a fluorine dichloro-methyl sulfo-) O-phthalic phthalimide and 2-benzoglyoxaline carboxylamine lower alkyl esters and/or 2-(4-thiazolyl) benzoglyoxaline.Although add, the polyurethane film of above-mentioned chemical substance is antibacterial has certain antibacterial effect under certain conditions, and its germ resistance is not good in general.Because its antibacterial mechanism is to utilize its toxicity kill microorganisms, thereby the security using is not high.
Summary of the invention
In view of this, one aspect of the present invention provides a kind of antibacterial polyurethane film, and this polyurethane film has good germ resistance, uses safer.
A kind of antibacterial polyurethane film, comprise waterborne polyurethane resin, in the bamboo charcoal powder of the quality 10~30% of waterborne polyurethane resin, 4~12% nano titanium oxide, 1~2% flatting silica, 0.4~0.6% flow agent, 0.4~0.6% help stripping agent, account for the silane coupling agent of nano titanium oxide quality 6~14%, and the organic solvent of surplus.
Wherein, comprise waterborne polyurethane resin, and in the bamboo charcoal powder of the quality 22% of waterborne polyurethane resin, 7% nano titanium oxide, 1.5% flatting silica, 0.5% flow agent, 0.5% help stripping agent, account for the silane coupling agent of nano titanium oxide quality 10%, and the organic solvent of surplus.
Wherein, the median size of described nano titanium oxide is 60~150nm.
Wherein, described silane coupling agent is a kind of in vinyl triethoxyl siloxanes, γ-methacryloxypropyl trimethoxy siloxane, gamma-aminopropyl-triethoxy-siloxanes and γ-glycidyl ether oxygen propyl trimethoxy siloxanes or at least two kinds.
Wherein, described flatting silica is OK-412 flatting silica, and described flow agent is the alkyl-modified organopolysiloxane in C1~10, described in help stripping agent be polyether-modified polydimethylsiloxane.
Wherein, described organic solvent comprises quality 15~25% butanone, 15~25% toluene and the 25~35%N in waterborne polyurethane resin, dinethylformamide.
In the feed composition of above polyurethane film, nano titanium oxide is as the good inorganic antiseptic of germ resistance.Nano titanium oxide is preferably anatase-type nanometer titanium dioxide, is because the nano titanium oxide of the type has better germ resistance.Bamboo charcoal powder is not only as the good natural antibacterial agent of a kind of effect, and it also can be used as the support materials of nano titanium oxide.Bamboo charcoal powder contains more micropore, and these micropores can be called the well loaded body of nano titanium oxide.When bamboo charcoal powder and nano titanium oxide compound use, nano titanium oxide is stated from bamboo charcoal powder, more than whole effects of both independent uses like this.
The organic solvent adding is dispersion medium, is understandable that, organic solvent refers to the liquid organic compound that dissolving power is stronger." surplus " is only enough to make flatting silica, flow agent, stripper and aqueous polyurethane fully to soak or dissolve the effect that it is fully disperseed to reach.The amount that it is concrete, those skilled in the art can obtain by simple practice.
Flatting silica is the glossiness that reduces mould material, makes it reach half light or unglazed effect.OK-412 flatting silica is a kind of white powder, and taking silicon-dioxide as main component, composition is up to more than 98%, and its median size is at several microns.It has advantages of that easy dispersion, extinction are good, increase slip, suspension is good.
Flow agent is to impel glue in drying and forming-film process, to form smooth, smooth, a uniform film.The alkyl-modified organopolysiloxane in C1~10 is in macromolecular chain, to contain the polymkeric substance that a class of alkyl contains silicon-oxide structure unit.Alkyl wherein can improve thermostability, consistency and foam stability not, even has their defoaming function.
Help stripping agent to be called again release agent, add that can to impel dry film to be easy to from coated substrate separated.Polyether-modified polydimethylsiloxane is to adopt ethers oligopolymer and polydimethylsiloxane to carry out condensation reaction to obtain.It had both been dissolvable in water oil type solvent, was dissolvable in water again water.It can anti, increases wear resistance, increases separate-type paper and obtain access times and can obviously improve glossiness, weathering resistance and the vividness of coating, and this external enwergy gives leather smooth feel, can effectively improve the dispersiveness of pigment and filler, improves the homogeneity of color; Can be used as the waterproof processing of fabric coating.
The present invention provides a kind of method of preparing above-mentioned polyurethane film on the other hand, and the polyurethane film that the method obtains has good germ resistance, uses safer.
Prepare the method as above-mentioned polyurethane film, comprise the following steps:
(1) bamboo charcoal powder of the quality in waterborne polyurethane resin 10~30%, 4~12% nano titanium oxide and the silane coupling agent that accounts for nano titanium oxide quality 6~14% are well-dispersed in and in organic solvent, form loaded nano slurry;
(2) form mixed solution to adding in loaded nano slurry after fully mixing in the flatting silica of the quality 1~2% of waterborne polyurethane resin, by waterborne polyurethane resin, with in the quality of waterborne polyurethane resin, 0.4~0.6% flow agent and 0.4~0.6% the stripping agent that helps are thoroughly mixed to form hybrid resin;
(3) in hybrid resin, add mixed solution, be thoroughly mixed to form glue;
(4) glue is inserted and make foaming formation aqueous polyurethane foam in bubble machine;
(5) after aqueous polyurethane foam is coated on coated substrate, coated substrate is dried, obtains polyurethane film.
Wherein, be separated into ultrasonic wave described in step (1) and disperse, the time that ultrasonic wave is disperseed is 5~10min.
Wherein, the described mixed solution of step (3) successively divides and is added to hybrid resin three times according to 30%, 30% and 40% add-on.
Wherein, the blowing ratio of the described foaming of step (4) is 4~6, and flow is 8~12g/s; Step (5) described dry be specially coated substrate is inserted in the baking oven of 60~150 DEG C and with the speed of 10~20M/min by baking oven, the glue spread of described coating is 140~180g/m 2, coated substrate is separate-type paper.
In polyurethane film of the present invention taking waterborne polyurethane resin as filmogen, by compound interpolation bamboo charcoal powder and nano titanium oxide in waterborne polyurethane resin, nano titanium oxide is supported on bamboo charcoal powder, makes polyurethane film germ resistance better, is better than both and uses separately total effect.Nontoxicity in the antibacterial process of nano titanium oxide and bamboo charcoal powder, is used safer.In addition, add by the content optimization to each feed composition, make polyurethane film there is good water-repellancy and ventilation property.
Embodiment
The present invention is described in further detail in conjunction with the embodiments respectively below.
In below implementing, related each industrial chemicals source place is as follows:
Waterborne polyurethane resin is the DL-1537 that Bayer A.G becomes to produce.Flow agent is white general the produced ZBJ-002 in Tianjin.Helping stripping agent is white general the produced ZBJ-003 in Tianjin; OK-412 organosilicon flatting silica is degussa(Degussa) to be produced, bamboo charcoal powder and nano titanium oxide are commercially available.
Embodiment 1: first, by the bamboo charcoal powder of the quality in waterborne polyurethane resin 10%, 4% nano titanium oxide and account for the general commodity trade mark of the KH570(γ-methacryloxypropyl trimethoxy silane of nano titanium oxide quality 6%) by taking waterborne polyurethane resin quality as benchmark, 15% butanone, 25% toluene and 25%N, dinethylformamide composition organic solvent carries out ultrasonic wave and disperses 5min, makes loaded nano slurry.Then, the OK-412 flatting silica of the quality in waterborne polyurethane resin 1% is added in above-mentioned loaded nano slurry, under the stirring of the homogenizer of 2500rpm, form mixed solution.And waterborne polyurethane resin is thoroughly mixed to form to hybrid resin at rotating speed together with the ZBJ-002 of the quality 0.4% taking waterborne polyurethane resin and 0.4% ZBJ-003 under the stirring of the stirrer of 1000rpm.Then, divide and three times mixed solution be added in hybrid resin and obtain glue in the stirring of the stirrer of 200rpm according to 30%, 30% and 40% add-on.Then, glue is inserted and is made in bubble machine, and the foaming according to the 4 when flow of 8g/s is carried out fully foaming and obtaining aqueous polyurethane foam.Then, aqueous polyurethane foam is coated in separate-type paper, inserted in baking oven, at 60 DEG C, make to be dried to polyurethane film with the speed of 10M/min by baking oven.Finally, polyurethane film separated and carries out trimming from separate-type paper, obtaining the finished product.
Embodiment 2: first, by the bamboo charcoal powder of the quality in waterborne polyurethane resin 15%, 5.5% nano titanium oxide and account for the general commodity trade mark of the KH550(γ-aminopropyl triethoxysilane of nano titanium oxide quality 7%) by taking waterborne polyurethane resin quality as benchmark, 20% butanone, 15% toluene and 35%N, dinethylformamide composition organic solvent carries out ultrasonic wave and disperses 6min, makes loaded nano slurry.Then, the OK-412 flatting silica of the quality in waterborne polyurethane resin 2% is added in above-mentioned loaded nano slurry, under the stirring of the homogenizer of 2800rpm, form mixed solution.And waterborne polyurethane resin is thoroughly mixed to form to hybrid resin at rotating speed together with the ZBJ-002 of the quality 0.6% taking waterborne polyurethane resin and 0.6% ZBJ-003 under the stirring of the stirrer of 1200rpm.Then, divide and three times mixed solution be added in hybrid resin and obtain glue in the stirring of the stirrer of 250rpm according to 30%, 30% and 40% add-on.Then, glue is inserted and is made in bubble machine, and the foaming according to the 4.5 when flow of 9g/s is carried out fully foaming and obtaining aqueous polyurethane foam.Then, aqueous polyurethane foam is coated in separate-type paper, inserted in baking oven, at 80 DEG C, make to be dried to polyurethane film with the speed of 11M/min by baking oven.Finally, polyurethane film separated and carries out trimming from separate-type paper, obtaining the finished product.
Embodiment 3: first, by the bamboo charcoal powder of the quality in waterborne polyurethane resin 20%, 6% nano titanium oxide and account for the general commodity trade mark of KH560(γ-glycidyl ether oxygen propyl trimethoxy siloxanes of nano titanium oxide quality 8%) by taking waterborne polyurethane resin quality as benchmark, 20% butanone, 15% toluene and 35%N, dinethylformamide composition organic solvent carries out ultrasonic wave and disperses 7min, makes loaded nano slurry.Then, the OK-412 flatting silica of the quality in waterborne polyurethane resin 1% is added in above-mentioned loaded nano slurry, under the stirring of the homogenizer of 3000rpm, form mixed solution.And waterborne polyurethane resin is thoroughly mixed to form to hybrid resin at rotating speed together with the ZBJ-002 of the quality 0.45% taking waterborne polyurethane resin and 0.4% ZBJ-003 under the stirring of the stirrer of 1300rpm.Then, divide and three times mixed solution be added in hybrid resin and obtain glue in the stirring of the stirrer of 280rpm according to 30%, 30% and 40% add-on.Then, glue is inserted and is made in bubble machine, and the foaming according to the 5 when flow of 10g/s is carried out fully foaming and obtaining aqueous polyurethane foam.Then, aqueous polyurethane foam is coated in separate-type paper, inserted in baking oven, at 100 DEG C, make to be dried to polyurethane film with the speed of 12M/min by baking oven.Finally, polyurethane film separated and carries out trimming from separate-type paper, obtaining the finished product.
Embodiment 4: first, by the bamboo charcoal powder of the quality in waterborne polyurethane resin 25%, 8% nano titanium oxide and the KH560 that accounts for nano titanium oxide quality 10% by taking waterborne polyurethane resin quality as benchmark, 20% butanone, 20% toluene and 35%N, dinethylformamide composition organic solvent carries out ultrasonic wave and disperses 8min, makes loaded nano slurry.Then, the OK-412 flatting silica of the quality in waterborne polyurethane resin 1.3% is added in above-mentioned loaded nano slurry, under the stirring of the homogenizer of 3100rpm, form mixed solution.And waterborne polyurethane resin is thoroughly mixed to form to hybrid resin at rotating speed together with the ZBJ-002 of the quality 0.4% taking waterborne polyurethane resin and 0.45% ZBJ-003 under the stirring of the stirrer of 1500rpm.Then, divide and three times mixed solution be added in hybrid resin and obtain glue in the stirring of the stirrer of 300rpm according to 30%, 30% and 40% add-on.Then, glue is inserted and is made in bubble machine, and the foaming according to the 6 when flow of 11g/s is carried out fully foaming and obtaining aqueous polyurethane foam.Then, aqueous polyurethane foam is coated in separate-type paper, inserted in baking oven, at 120 DEG C, make to be dried to polyurethane film with the speed of 15M/min by baking oven.Finally, polyurethane film separated and carries out trimming from separate-type paper, obtaining the finished product.
Embodiment 5: first, by the bamboo charcoal powder of the quality in waterborne polyurethane resin 28%, 10% nano titanium oxide and the KH550 that accounts for nano titanium oxide quality 12% by taking waterborne polyurethane resin quality as benchmark, 20% butanone, 20% toluene and 30%N, dinethylformamide composition organic solvent carries out ultrasonic wave and disperses 9min, makes loaded nano slurry.Then, the OK-412 flatting silica of the quality in waterborne polyurethane resin 1.6% is added in above-mentioned loaded nano slurry, under the stirring of the homogenizer of 3100rpm, form mixed solution.And waterborne polyurethane resin is thoroughly mixed to form to hybrid resin at rotating speed together with the ZBJ-002 of the quality 0.4% taking waterborne polyurethane resin and 0.45% ZBJ-003 under the stirring of the stirrer of 1500rpm.Then, divide and three times mixed solution be added in hybrid resin and obtain glue in the stirring of the stirrer of 300rpm according to 30%, 30% and 40% add-on.Then, glue is inserted and is made in bubble machine, and the foaming according to the 5 when flow of 12g/s is carried out fully foaming and obtaining aqueous polyurethane foam.Then, aqueous polyurethane foam is coated in separate-type paper, inserted in baking oven, at 140 DEG C, make to be dried to polyurethane film with the speed of 18M/min by baking oven.Finally, polyurethane film separated and carries out trimming from separate-type paper, obtaining the finished product.
Embodiment 6: first, by the bamboo charcoal powder of the quality in waterborne polyurethane resin 30%, 12% nano titanium oxide and the KH550 that accounts for nano titanium oxide quality 14% by taking waterborne polyurethane resin quality as benchmark, 20% butanone, 20% toluene and 30%N, dinethylformamide composition organic solvent carries out ultrasonic wave and disperses 11min, makes loaded nano slurry.Then, the OK-412 flatting silica of the quality in waterborne polyurethane resin 1.8% is added in above-mentioned loaded nano slurry, under the stirring of the homogenizer of 3300rpm, form mixed solution.And waterborne polyurethane resin is thoroughly mixed to form to hybrid resin at rotating speed together with the ZBJ-002 of the quality 0.55% taking waterborne polyurethane resin and 0.55% ZBJ-003 under the stirring of the stirrer of 1200rpm.Then, divide and three times mixed solution be added in hybrid resin and obtain glue in the stirring of the stirrer of 300rpm according to 30%, 30% and 40% add-on.Then, glue is inserted and is made in bubble machine, and the foaming according to the 5.5 when flow of 10g/s is carried out fully foaming and obtaining aqueous polyurethane foam.Then, aqueous polyurethane foam is coated in separate-type paper, inserted in baking oven, at 150 DEG C, make to be dried to polyurethane film with the speed of 20M/min by baking oven.Finally, polyurethane film separated and carries out trimming from separate-type paper, obtaining the finished product.
Embodiment 7: first, by the bamboo charcoal powder of the quality in waterborne polyurethane resin 22%, 7% nano titanium oxide and the KH550 that accounts for nano titanium oxide quality 10% by taking waterborne polyurethane resin quality as benchmark, 20% butanone, 20% toluene and 30%N, dinethylformamide composition organic solvent carries out ultrasonic wave and disperses 12min, makes loaded nano slurry.Then, the OK-412 flatting silica of the quality in waterborne polyurethane resin 1.5% is added in above-mentioned loaded nano slurry, under the stirring of the homogenizer of 3300rpm, form mixed solution.And waterborne polyurethane resin is thoroughly mixed to form to hybrid resin at rotating speed together with the ZBJ-002 of the quality 0.5% taking waterborne polyurethane resin and 0.5% ZBJ-003 under the stirring of the stirrer of 1200rpm.Then, divide and three times mixed solution be added in hybrid resin and obtain glue in the stirring of the stirrer of 300rpm according to 30%, 30% and 40% add-on.Then, glue is inserted and is made in bubble machine, and the foaming according to the 5 when flow of 6g/s is carried out fully foaming and obtaining aqueous polyurethane foam.Then, aqueous polyurethane foam is coated in separate-type paper, inserted in baking oven, at 100 DEG C, make to be dried to polyurethane film with the speed of 16M/min by baking oven.Finally, polyurethane film separated and carries out trimming from separate-type paper, obtaining the finished product.
The polyurethane film obtaining according to embodiment 1~7 is tested to (taking bacteriostasis rate as index) according to FZ/T01021-1992 standard to germ resistance.According to ASTM D737 standard, ventilation property (taking vapor transfer rate as index) is tested.According to JIS L1099B standard to water-repellancy (taking resistance to hydrostatic pressure as index).Endwise tensile strength and transverse tensile strength are tested according to GB/T4757-1997.Above-mentioned test result is as following table:
As can be seen from the above table, the bacteriostasis rate of embodiment 6 is slightly better than embodiment 7.The vapor transfer rate of embodiment 7 and resistance to hydrostatic pressure all want large compared with other embodiment, illustrate that implementing 7 has good ventilation property and water-repellancy.Except this, the endwise tensile strength of embodiment 7 and transverse tensile strength want large compared with other embodiment, illustrate that implementing 7 has good tensile strength.Consider, the present invention preferably implements 7 for optimum formula, in the bamboo charcoal powder of the quality 22% of waterborne polyurethane resin, 7% nano titanium oxide, 1.5% flatting silica, 0.5% flow agent, 0.5% help stripping agent, and the silane coupling agent of rice titanium dioxide quality 10%, and the organic solvent of surplus.
Should be noted that and understand, in the case of not departing from the spirit and scope of accompanying claim the present invention for required protection, can make various amendments and improvement to the present invention of foregoing detailed description.Therefore, the scope of claimed technical scheme is not subject to the restriction of given any specific exemplary teachings.
Applicant's statement, the present invention illustrates detailed process equipment and process flow process of the present invention by above-described embodiment, but the present invention is not limited to above-mentioned detailed process equipment and process flow process, do not mean that the present invention must rely on above-mentioned detailed process equipment and process flow process and could implement.Person of ordinary skill in the field should understand, any improvement in the present invention, and the selections of the equivalence replacement to the each raw material of product of the present invention and the interpolation of ancillary component, concrete mode etc., within all dropping on protection scope of the present invention and open scope.

Claims (10)

1. an antibacterial polyurethane film, it is characterized in that, comprise waterborne polyurethane resin, in the bamboo charcoal powder of the quality 10~30% of waterborne polyurethane resin, 4~12% nano titanium oxide, 1~2% flatting silica, 0.4~0.6% flow agent, 0.4~0.6% help stripping agent, account for the silane coupling agent of nano titanium oxide quality 6~14%, and the organic solvent of surplus.
2. polyurethane film according to claim 1, it is characterized in that, comprise waterborne polyurethane resin, and in the bamboo charcoal powder of the quality 22% of waterborne polyurethane resin, 7% nano titanium oxide, 1.5% flatting silica, 0.5% flow agent, 0.5% help stripping agent, account for the silane coupling agent of nano titanium oxide quality 10%, and the organic solvent of surplus.
3. polyurethane film according to claim 1, is characterized in that, the median size of described nano titanium oxide is 60~150nm.
4. polyurethane film according to claim 1, it is characterized in that, described silane coupling agent is a kind of in vinyl triethoxyl siloxanes, γ-methacryloxypropyl trimethoxy siloxane, gamma-aminopropyl-triethoxy-siloxanes and γ-glycidyl ether oxygen propyl trimethoxy siloxanes or at least two kinds.
5. polyurethane film according to claim 1, is characterized in that, described flatting silica is OK-412 flatting silica, and described flow agent is C 1~10alkyl-modified organopolysiloxane, described in help stripping agent be polyether-modified polydimethylsiloxane.
6. polyurethane film according to claim 1, is characterized in that, described organic solvent comprises quality 15~25% butanone, 15~25% toluene and the 25~35%N in waterborne polyurethane resin, dinethylformamide.
7. prepare a method for polyurethane film as claimed in claim 1, it is characterized in that, comprise the following steps:
(1) bamboo charcoal powder of the quality in waterborne polyurethane resin 10~30%, 4~12% nano titanium oxide and the silane coupling agent that accounts for nano titanium oxide quality 6~14% are well-dispersed in and in organic solvent, form loaded nano slurry;
(2) form mixed solution to adding in loaded nano slurry after fully mixing in the flatting silica of the quality 1~2% of waterborne polyurethane resin, by waterborne polyurethane resin, with in the quality of waterborne polyurethane resin, 0.4~0.6% flow agent and 0.4~0.6% the stripping agent that helps are thoroughly mixed to form hybrid resin;
(3) in hybrid resin, add mixed solution, be thoroughly mixed to form glue;
(4) glue is inserted and make foaming formation aqueous polyurethane foam in bubble machine;
(5) after aqueous polyurethane foam is coated on coated substrate, coated substrate is dried, obtains polyurethane film.
8. method according to claim 7, is characterized in that, is separated into ultrasonic wave described in step (1) and disperses, and the time that ultrasonic wave is disperseed is 5~10min.
9. method according to claim 7, is characterized in that, the described mixed solution of step (3) successively divides and is added to hybrid resin three times according to 30%, 30% and 40% add-on.
10. method according to claim 7, is characterized in that, the blowing ratio of the described foaming of step (4) is 4~6, and flow is 8~12g/s; Step (5) described dry be specially coated substrate is inserted in the baking oven of 60~150 DEG C and with the speed of 10~20M/min by baking oven, the glue spread of described coating is 140~180g/m 2, coated substrate is separate-type paper.
CN201410161392.XA 2014-04-21 2014-04-21 Antibacterial polyurethane film and preparation method thereof Pending CN103923456A (en)

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CN104727150A (en) * 2015-03-02 2015-06-24 东南大学 Waterproof moisture-penetrable antibacterial anti-ultraviolet waterborne polyurethane material and preparation method thereof
CN105926310A (en) * 2016-06-28 2016-09-07 大连海事大学 Fabric and preparation method thereof
CN106751730A (en) * 2016-11-23 2017-05-31 广东聚航新材料研究院有限公司 A kind of nano-antibacterial TPU film and preparation method thereof
CN107033376A (en) * 2016-11-23 2017-08-11 广东聚航新材料研究院有限公司 A kind of antimicrobial form TPU is cast membrane preparation method
CN106977683A (en) * 2017-04-14 2017-07-25 陕西科技大学 No-solvent type polyurethane nano TiO2Composite membrane and preparation method thereof
CN108822528A (en) * 2018-07-09 2018-11-16 江苏阳光股份有限公司 A kind of preparation method of warming-type wool fabric
CN111621141A (en) * 2020-06-12 2020-09-04 广西大学 Slow-release chlorine dioxide-waterborne polyurethane antibacterial film and preparation method thereof

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Application publication date: 20140716