CN114717840A - Modified fabric and preparation method and application thereof - Google Patents
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- D06M11/77—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof
- D06M11/79—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon dioxide, silicic acids or their salts
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- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/83—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with metals; with metal-generating compounds, e.g. metal carbonyls; Reduction of metal compounds on textiles
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- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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Abstract
本发明公开了改性织物及其制备方法和应用,方法包括下述步骤:对织物进行(1)聚磷酸铵涂覆,(2)PDMS‑SiO2涂覆,(3)聚多巴胺涂覆;其中,步骤(1)~(3)分别进行,或者其中至少两步同时进行;并且步骤(1)不在步骤(2)之后。改性织物采用上述制备方法得到。本发明中聚磷酸铵与SiO2的协同作用增强了PET织物的疏水性和阻燃性;制备方法简便且耗能小;进一步地通过聚多巴胺本身的还原活性,将纳米银颗粒附着在织物上;赋予了织物阻燃性、抗菌性、疏水性和耐洗涤性。上述改性织物可在户外用品、室内装饰、消防用品领域中应用。
The invention discloses a modified fabric and a preparation method and application thereof. The method comprises the following steps: (1) ammonium polyphosphate coating, (2) PDMS-SiO 2 coating, (3) polydopamine coating on the fabric; Wherein, steps (1) to (3) are performed separately, or at least two of them are performed simultaneously; and step (1) is not after step (2). The modified fabric is obtained by the above preparation method. In the present invention, the synergistic effect of ammonium polyphosphate and SiO 2 enhances the hydrophobicity and flame retardancy of the PET fabric; the preparation method is simple and low in energy consumption; further, the nano silver particles are attached to the fabric through the reducing activity of polydopamine itself ; Endows the fabric with flame retardancy, antibacterial, hydrophobicity and washing resistance. The above-mentioned modified fabrics can be applied in the fields of outdoor products, interior decoration and fire-fighting products.
Description
技术领域technical field
本发明涉及织物改性领域,特别涉及一种改性织物及其制备方法和应用。The invention relates to the field of fabric modification, in particular to a modified fabric and a preparation method and application thereof.
背景技术Background technique
PET织物由于具有良好的耐皱性和弹性等优异性能而被广泛应用于服装、装饰等领域。近年来,随着生活环境和水平的不断提高,人们也开始趋向于追求环保、健康的纺织材料。然而PET织物具有易燃性,在火灾中给人民带来巨大的损失;此外,PET织物有利于微生物和细菌粘附在表面,进而传播和危害人体健康;因此,PET织物的抗菌、阻燃性能整理引起了人们的关注。PET fabrics are widely used in clothing, decoration and other fields due to their excellent properties such as good wrinkle resistance and elasticity. In recent years, with the continuous improvement of living environment and level, people also tend to pursue environmentally friendly and healthy textile materials. However, PET fabric is flammable, which brings huge losses to people in fires; in addition, PET fabric is conducive to the adhesion of microorganisms and bacteria to the surface, which in turn spreads and harms human health; therefore, the antibacterial and flame retardant properties of PET fabric Tidying up has attracted attention.
目前现有技术仅单独实现PET的疏水功能或阻燃功能或抗菌功能,这些材料的功能单一,不能满足人们日益增长的要求。部分专利公开了复合功能的PET材料,如中国专利CN108251911A公开了一种整理抗菌阻燃PET纤维及其制备方法,该方法是将抗菌阻燃剂与成纤高聚物PET熔融纺丝而成,其中抗菌阻燃剂为Cu+离子与含氮杂环类物质及有机磷化合物的双配位络合物。又如中国专利CN109208114A提供一种阻燃抗菌PET纤维及其切片纺丝制备方法,该方法是将PET切片与金属改性超支化聚合物熔融共混制备功能母粒,再将功能母粒与PET切片混合均匀后熔融纺丝制得阻燃抗菌PET纤维。At present, the existing technology only realizes the hydrophobic function, flame retardant function or antibacterial function of PET alone. These materials have single functions and cannot meet people's increasing demands. Some patents disclose PET materials with composite functions. For example, Chinese patent CN108251911A discloses a finishing antibacterial and flame retardant PET fiber and its preparation method. The antibacterial flame retardant is a double-coordination complex of Cu + ions, nitrogen-containing heterocyclic substances and organic phosphorus compounds. Another example is Chinese patent CN109208114A, which provides a flame-retardant and antibacterial PET fiber and a method for preparing its slices and spinning. After the slices are mixed evenly, the flame-retardant and antibacterial PET fibers are obtained by melt spinning.
尽管上述方法均能制备具有复合功能的PET织物,但是依然存在着一些不足。目前所制备的复合功能PET织物多数是利用熔融纺丝法制备,具体地,先将功能改性剂和PET切片熔融混合,然后进行熔融纺丝并制备成织物。这些方法存在着以下缺陷:(1)功能改性剂制备过程复杂,耗时长;(2)需要用到高温设备,耗能大;(3)并未赋予织物防水性,导致PET织物的功能改性剂随着洗涤次数的增加而逐渐脱附。Although the above methods can all prepare PET fabrics with composite functions, there are still some deficiencies. Most of the composite functional PET fabrics currently prepared are prepared by melt spinning. Specifically, the functional modifier and PET chips are first melt-mixed, and then melt-spun to prepare fabrics. These methods have the following defects: (1) the preparation process of the functional modifier is complicated and time-consuming; (2) high temperature equipment is required, which consumes a lot of energy; (3) the fabric is not given waterproofness, which leads to the functional modification of the PET fabric. The agent is gradually desorbed with the increase of washing times.
为了克服PET织物的功能改性剂随着洗涤次数的增加而逐渐脱附的问题,目前常见的方法是使用诸如聚氨酯和环氧树脂之类的粘合剂来提高功能改性剂的粘合性,从而提高织物的防水性,但是,这些不具有阻燃性的粘合剂将可能导致阻燃性的降低。In order to overcome the problem that the functional modifier of PET fabric gradually desorbs with the increase of washing times, the current common method is to use adhesives such as polyurethane and epoxy resin to improve the adhesion of the functional modifier , so as to improve the waterproofness of the fabric, but these non-flame retardant adhesives may lead to a decrease in the flame retardant.
发明内容SUMMARY OF THE INVENTION
为了克服现有技术中PET织物无法同时具有优异的防水性与阻燃性的问题,本发明提供了一种改性织物及其制备方法和应用。本发明的改性织物同时具有良好的阻燃性和超疏水性,即使在多次洗涤循环后,织物的阻燃性和超疏水性仍得以保持;该改性织物制备方法简便,在常温下即可进行,耗能小。In order to overcome the problem that the PET fabric in the prior art cannot have both excellent water resistance and flame retardancy, the present invention provides a modified fabric and a preparation method and application thereof. The modified fabric of the invention has both good flame retardancy and superhydrophobicity, and the flame retardancy and superhydrophobicity of the fabric are maintained even after multiple washing cycles; the preparation method of the modified fabric is simple and convenient at room temperature. It can be carried out, and the energy consumption is small.
本发明是通过以下技术方案来解决上述技术问题:The present invention solves the above-mentioned technical problems through the following technical solutions:
本发明提供了一种改性织物的制备方法,其包括下述步骤:对织物进行(1)聚磷酸铵(APP)涂覆,(2)PDMS-SiO2涂覆,(3)聚多巴胺(PDA)涂覆;其中,步骤(1)~(3)分别进行,或者其中至少两步同时进行;并且步骤(1)不在步骤(2)之后。The invention provides a preparation method of modified fabric, which comprises the following steps: (1) ammonium polyphosphate (APP) coating, (2) PDMS-SiO 2 coating, (3) polydopamine ( PDA) coating; wherein, steps (1) to (3) are performed separately, or at least two of them are performed simultaneously; and step (1) is not after step (2).
本发明中,步骤(1)可按本领域常规方法进行,较佳地包括将织物与含APP的醇悬浮液混合。In the present invention, step (1) can be carried out according to conventional methods in the art, preferably comprising mixing the fabric with the alcoholic suspension containing APP.
本发明中,步骤(2)可按本领域常规方法进行,较佳地包括将织物与含四乙氧基硅烷(TEOS)和羟基封端的聚二甲基硅氧烷(HPDMS)的醇悬浮液混合,调节pH至8.5-9.5,在30-35℃下反应。In the present invention, step (2) can be carried out according to conventional methods in the art, and preferably comprises mixing the fabric with an alcohol suspension containing tetraethoxysilane (TEOS) and hydroxyl-terminated polydimethylsiloxane (HPDMS). Mix, adjust pH to 8.5-9.5, and react at 30-35°C.
或者,步骤(2)较佳地包括将织物与聚二甲基化硅烷-二氧化硅杂化体(PDMS-SiO2杂化体)醇悬浮液混合,其中,所述PDMS-SiO2杂化体醇悬浮液通过调节含TEOS和HPDMS的醇悬浮液的pH至8.5-9.5,在30-35℃下反应得到。Alternatively, step (2) preferably comprises mixing the fabric with a polydimethylsiloxane-silica hybrid (PDMS-SiO 2 hybrid) alcohol suspension, wherein the PDMS-SiO 2 hybrid The alcoholic suspension is obtained by adjusting the pH of the alcoholic suspension containing TEOS and HPDMS to 8.5-9.5 and reacting at 30-35°C.
或者,步骤(2)较佳地包括将织物与含有TEOS的醇悬浮液混合,调节pH至8.5-9.5,再与含HPDMS的醇悬浮液混合,在30-35℃下反应。Alternatively, step (2) preferably includes mixing the fabric with the alcohol suspension containing TEOS, adjusting the pH to 8.5-9.5, and then mixing with the alcohol suspension containing HPDMS, and reacting at 30-35°C.
本发明中,步骤(3)可按本领域常规方法进行,较佳地包括将织物与含多巴胺盐酸盐(DA)的醇悬浮液混合,调节pH至8.5-9.5,在30-35℃下反应。In the present invention, step (3) can be carried out according to conventional methods in the art, preferably comprising mixing the fabric with an alcohol suspension containing dopamine hydrochloride (DA), adjusting the pH to 8.5-9.5, at 30-35° C. reaction.
或者,步骤(3)较佳地包括将织物与PDA溶液混合,其中所述PDA溶液通过调节含DA的醇悬浮液的pH至8.5-9.5,在30-35℃下反应得到。Alternatively, step (3) preferably includes mixing the fabric with a PDA solution, wherein the PDA solution is obtained by adjusting the pH of the DA-containing alcohol suspension to 8.5-9.5 and reacting at 30-35°C.
本发明中,较佳地,所述聚磷酸铵:四乙氧基硅烷:羟基封端的聚二甲基硅氧烷:多巴胺盐酸盐的质量比为(30~45):(30~45):(30~45):1。In the present invention, preferably, the mass ratio of the ammonium polyphosphate: tetraethoxysilane: hydroxyl-terminated polydimethylsiloxane: dopamine hydrochloride is (30-45): (30-45) : (30 to 45): 1.
其中,较佳地,所述聚磷酸铵:四乙氧基硅烷:羟基封端的聚二甲基硅氧烷的质量比为1:1:1。Wherein, preferably, the mass ratio of the ammonium polyphosphate:tetraethoxysilane:hydroxyl-terminated polydimethylsiloxane is 1:1:1.
较佳地,所述聚磷酸铵:四乙氧基硅烷:羟基封端的聚二甲基硅氧烷:多巴胺盐酸盐的质量比为33:33:33:1或40:40:40:1。Preferably, the mass ratio of ammonium polyphosphate: tetraethoxysilane: hydroxyl terminated polydimethylsiloxane: dopamine hydrochloride is 33:33:33:1 or 40:40:40:1 .
在本发明一较佳的实施方案中,所述改性织物的制备方法包括:同时进行(1)聚磷酸铵(APP)涂覆、(2)PDMS-SiO2涂覆和(3)聚多巴胺(PDA)涂覆。In a preferred embodiment of the present invention, the preparation method of the modified fabric comprises: simultaneously performing (1) ammonium polyphosphate (APP) coating, (2) PDMS-SiO 2 coating and (3) polydopamine (PDA) coating.
在该实施方案中,所述改性织物的制备方法较佳地包括:将织物与含APP,TEOS,HPDMS和DA的醇悬浮液混合,调节pH至8.5-9.5,在30-35℃下反应,洗涤并干燥后得织物-(APP-PDMS-SiO2-PDA)。In this embodiment, the preparation method of the modified fabric preferably comprises: mixing the fabric with an alcohol suspension containing APP, TEOS, HPDMS and DA, adjusting the pH to 8.5-9.5, and reacting at 30-35°C , washed and dried to obtain fabric-(APP-PDMS-SiO 2 -PDA).
在本发明一较佳的实施方案中,所述改性织物的制备方法包括:依次进行(1)聚磷酸铵(APP)涂覆、(2)PDMS-SiO2涂覆和(3)聚多巴胺(PDA)涂覆。In a preferred embodiment of the present invention, the preparation method of the modified fabric comprises: sequentially performing (1) ammonium polyphosphate (APP) coating, (2) PDMS-SiO 2 coating and (3) polydopamine (PDA) coating.
在该实施方案中,所述改性织物的制备方法较佳地包括:In this embodiment, the preparation method of the modified fabric preferably comprises:
1)将织物与含APP的醇悬浮液混合,洗涤并干燥后得织物-APP;1) Mix the fabric with the alcohol suspension containing APP, wash and dry to obtain the fabric-APP;
2)将织物-APP与含TEOS和HPDMS的醇悬浮液混合,调节pH至8.5-9.5,在30-35℃下反应,洗涤并干燥后得织物-APP-PDMS-SiO2;2) Mixing the fabric-APP with the alcohol suspension containing TEOS and HPDMS, adjusting the pH to 8.5-9.5, reacting at 30-35° C., washing and drying to obtain the fabric-APP-PDMS-SiO 2 ;
或,将织物-APP与聚二甲基化硅烷-二氧化硅杂化体(PDMS-SiO2杂化体)醇悬浮液混合,洗涤并干燥后得织物-APP-PDMS-SiO2;其中,所述PDMS-SiO2杂化体醇悬浮液通过调节含TEOS和HPDMS的醇悬浮液的pH至8.5-9.5,在30-35℃下反应得到;Or, the fabric-APP is mixed with the polydimethylsilane-silica hybrid (PDMS-SiO 2 hybrid) alcohol suspension, washed and dried to obtain the fabric-APP-PDMS-SiO 2 ; wherein, The PDMS-SiO 2 hybrid alcohol suspension is obtained by adjusting the pH of the alcohol suspension containing TEOS and HPDMS to 8.5-9.5, and reacting at 30-35° C.;
或,将织物-APP与含TEOS的醇悬浮液混合,调节pH至8.5-9.5,再与含HPDMS的醇悬浮液混合,在30-35℃下反应,洗涤并干燥后得织物-APP-PDMS-SiO2;Or, mix the fabric-APP with the alcohol suspension containing TEOS, adjust the pH to 8.5-9.5, then mix with the alcohol suspension containing HPDMS, react at 30-35°C, wash and dry to obtain the fabric-APP-PDMS -SiO 2 ;
3)将织物-APP-PDMS-SiO2与含DA的醇悬浮液混合,调节该悬浮液的pH至8.5-9.5,在30-35℃下反应,洗涤并干燥后得织物-APP-PDMS-SiO2-PDA;3) Mix the fabric-APP-PDMS- SiO2 with the DA-containing alcohol suspension, adjust the pH of the suspension to 8.5-9.5, react at 30-35 °C, wash and dry to obtain the fabric-APP-PDMS- SiO 2 -PDA;
或,将织物-APP-PDMS-SiO2与PDA溶液混合,洗涤并干燥后得织物-APP-PDMS-SiO2-PDA;其中,所述PDA溶液通过调节含DA的醇悬浮液的pH至8.5-9.5,在30-35℃下反应得到。Or, mix the fabric-APP-PDMS-SiO 2 with the PDA solution, wash and dry to obtain the fabric-APP-PDMS-SiO 2 -PDA; wherein, the PDA solution is adjusted to 8.5 by adjusting the pH of the DA-containing alcohol suspension -9.5, obtained by reaction at 30-35°C.
在本发明一较佳的实施方案中,所述改性织物的制备方法包括:依次进行(1)聚磷酸铵(APP)涂覆、(3)聚多巴胺(PDA)涂覆和(2)PDMS-SiO2涂覆。In a preferred embodiment of the present invention, the preparation method of the modified fabric comprises: sequentially performing (1) ammonium polyphosphate (APP) coating, (3) polydopamine (PDA) coating and (2) PDMS - SiO 2 coating.
在该实施方案中,所述改性织物的制备方法较佳地包括:In this embodiment, the preparation method of the modified fabric preferably comprises:
1)将织物与含APP的醇悬浮液混合,洗涤并干燥后得织物-APP;1) Mix the fabric with the alcohol suspension containing APP, wash and dry to obtain the fabric-APP;
2)将织物-APP与含DA的醇悬浮液混合,调节该悬浮液的pH至8.5-9.5,在30-35℃下反应,洗涤并干燥后得织物-APP-PDA;2) Mix the fabric-APP with the DA-containing alcohol suspension, adjust the pH of the suspension to 8.5-9.5, react at 30-35° C., wash and dry to obtain the fabric-APP-PDA;
或,将织物-APP与PDA溶液混合,洗涤并干燥后得织物-APP-PDA;其中,所述PDA溶液通过调节含DA的醇悬浮液的pH至8.5-9.5,在30-35℃下反应得到;Or, mix the fabric-APP and the PDA solution, wash and dry to obtain the fabric-APP-PDA; wherein, the PDA solution is reacted at 30-35 ° C by adjusting the pH of the DA-containing alcohol suspension to 8.5-9.5 get;
3)将织物-APP-PDA与含TEOS和HPDMS的醇悬浮液混合,调节pH至8.5-9.5,在30-35℃下反应,洗涤并干燥后得织物-APP-PDA-PDMS-SiO2;3) Mixing the fabric-APP-PDA with the alcohol suspension containing TEOS and HPDMS, adjusting the pH to 8.5-9.5, reacting at 30-35° C., washing and drying to obtain the fabric-APP-PDA-PDMS-SiO 2 ;
或,将织物-APP-PDA与聚二甲基化硅烷-二氧化硅杂化体(PDMS-SiO2杂化体)醇悬浮液混合,洗涤并干燥后得织物-APP-PDA-PDMS-SiO2;其中,所述PDMS-SiO2杂化体醇悬浮液通过调节含TEOS和HPDMS的醇悬浮液的pH至8.5-9.5,在30-35℃下反应得到;Or, mix fabric-APP-PDA with polydimethylsilane-silica hybrid (PDMS - SiO hybrid) alcohol suspension, wash and dry to obtain fabric-APP-PDA-PDMS-SiO 2 ; wherein, the PDMS-SiO 2 hybrid alcohol suspension is obtained by adjusting the pH of the alcohol suspension containing TEOS and HPDMS to 8.5-9.5, and reacting at 30-35° C.;
或,将织物-APP-PDA与含TEOS的醇悬浮液混合,调节pH至8.5-9.5,再与含HPDMS的醇悬浮液混合,在30-35℃下反应,洗涤并干燥后得织物-APP-PDA-PDMS-SiO2。Or, mix the fabric-APP-PDA with the alcohol suspension containing TEOS, adjust the pH to 8.5-9.5, then mix with the alcohol suspension containing HPDMS, react at 30-35°C, wash and dry to obtain the fabric-APP -PDA-PDMS- SiO2 .
在本发明一较佳的实施方案中,所述改性织物的制备方法包括:依次进行(3)聚多巴胺(PDA)涂覆、(1)聚磷酸铵(APP)涂覆和(2)PDMS-SiO2涂覆。In a preferred embodiment of the present invention, the preparation method of the modified fabric comprises: sequentially performing (3) polydopamine (PDA) coating, (1) ammonium polyphosphate (APP) coating and (2) PDMS - SiO 2 coating.
在该实施方案中,所述改性织物的制备方法较佳地包括:In this embodiment, the preparation method of the modified fabric preferably comprises:
1)将织物与含DA的醇悬浮液混合,调节该悬浮液的pH至8.5-9.5,在30-35℃下反应,洗涤并干燥后得织物-PDA;1) Mix the fabric with the alcohol suspension containing DA, adjust the pH of the suspension to 8.5-9.5, react at 30-35 ° C, wash and dry to obtain the fabric-PDA;
或,将织物与PDA溶液混合,洗涤并干燥后得织物-PDA;其中,所述PDA溶液通过调节含DA的醇悬浮液的pH至8.5-9.5,在30-35℃下反应得到;Or, the fabric is mixed with the PDA solution, washed and dried to obtain the fabric-PDA; wherein, the PDA solution is obtained by adjusting the pH of the DA-containing alcohol suspension to 8.5-9.5, and reacting at 30-35 ° C;
2)将织物-PDA与含APP的醇悬浮液混合,洗涤并干燥后得织物-PDA-APP;2) fabric-PDA is mixed with APP-containing alcohol suspension, washed and dried to obtain fabric-PDA-APP;
3)将织物-PDA-APP与含TEOS和HPDMS的醇悬浮液混合,调节pH至8.5-9.5,在30-35℃下反应,洗涤并干燥后得织物-PDA-APP-PDMS-SiO2;3) Mix the fabric-PDA-APP with the alcohol suspension containing TEOS and HPDMS, adjust the pH to 8.5-9.5, react at 30-35° C., wash and dry to obtain the fabric-PDA-APP-PDMS-SiO 2 ;
或,将织物-PDA-APP与聚二甲基化硅烷-二氧化硅杂化体(PDMS-SiO2杂化体)醇悬浮液混合,洗涤并干燥后得织物-PDA-APP-PDMS-SiO2;其中,所述PDMS-SiO2杂化体醇悬浮液通过调节含TEOS和HPDMS的醇悬浮液的pH至8.5-9.5,在30-35℃下反应得到;Or, mix fabric-PDA-APP with polydimethylsilane-silica hybrid (PDMS - SiO hybrid) alcohol suspension, wash and dry to obtain fabric-PDA-APP-PDMS-SiO 2 ; wherein, the PDMS-SiO 2 hybrid alcohol suspension is obtained by adjusting the pH of the alcohol suspension containing TEOS and HPDMS to 8.5-9.5, and reacting at 30-35° C.;
或,将织物-PDA-APP与含TEOS的醇悬浮液混合,调节pH至8.5-9.5,再与含HPDMS的醇悬浮液混合,在30-35℃下反应,洗涤并干燥后得织物-PDA-APP-PDMS-SiO2。Or, mix the fabric-PDA-APP with the alcohol suspension containing TEOS, adjust the pH to 8.5-9.5, then mix with the alcohol suspension containing HPDMS, react at 30-35°C, wash and dry to obtain the fabric-PDA -APP-PDMS- SiO2 .
在本发明一较佳的实施方案中,所述改性织物的制备方法包括:同时进行(1)聚磷酸铵(APP)涂覆和(2)PDMS-SiO2涂覆,再进行(3)聚多巴胺(PDA)涂覆。In a preferred embodiment of the present invention, the preparation method of the modified fabric comprises: simultaneously performing (1) ammonium polyphosphate (APP) coating and (2) PDMS-SiO 2 coating, and then performing (3) Polydopamine (PDA) coating.
在该实施方案中,所述改性织物的制备方法较佳地包括:In this embodiment, the preparation method of the modified fabric preferably comprises:
1)将织物与含APP、TEOS和HPDMS的醇悬浮液混合,调节pH至8.5-9.5,在30-35℃下反应,洗涤并干燥后得织物-(APP-PDMS-SiO2);1) Mix the fabric with an alcohol suspension containing APP, TEOS and HPDMS, adjust the pH to 8.5-9.5, react at 30-35°C, wash and dry to obtain fabric-(APP-PDMS-SiO 2 );
或,将织物与含APP的醇悬浮液和PDMS-SiO2杂化体醇悬浮液混合,洗涤并干燥后得织物-(APP-PDMS-SiO2);其中,所述PDMS-SiO2杂化体醇悬浮液通过调节含TEOS和HPDMS的醇悬浮液的pH至8.5-9.5,在30-35℃下反应得到;Or, the fabric is mixed with APP-containing alcohol suspension and PDMS-SiO 2 hybrid alcohol suspension, washed and dried to obtain fabric-(APP-PDMS-SiO 2 ); wherein, the PDMS-SiO 2 hybrid The alcohol suspension is obtained by adjusting the pH of the alcohol suspension containing TEOS and HPDMS to 8.5-9.5, and reacting at 30-35 °C;
或,将织物与含TEOS和APP的醇悬浮液混合,调节pH至8.5-9.5,再与含HPDMS的醇悬浮液混合,在30-35℃下反应,洗涤并干燥后得织物-(APP-PDMS-SiO2);Or, mix the fabric with the alcohol suspension containing TEOS and APP, adjust the pH to 8.5-9.5, then mix with the alcohol suspension containing HPDMS, react at 30-35 ° C, wash and dry to obtain the fabric-(APP- PDMS-SiO 2 );
2)将织物-(APP-PDMS-SiO2)与含有DA的醇悬浮液混合,调节pH至8.5-9.5,在30-35℃下反应,洗涤并干燥后得织物-(APP-PDMS-SiO2)-PDA;2) Mix the fabric-(APP-PDMS-SiO 2 ) with the alcohol suspension containing DA, adjust the pH to 8.5-9.5, react at 30-35°C, wash and dry to obtain the fabric-(APP-PDMS-SiO 2 )-PDA;
或,将织物-(APP-PDMS-SiO2)与PDA溶液混合,洗涤并干燥后得织物-(APP-PDMS-SiO2)-PDA;其中,所述PDA溶液通过调节含DA的醇悬浮液的pH至8.5-9.5,在30-35℃下反应得到。Or, mix the fabric-(APP-PDMS-SiO 2 ) with the PDA solution, wash and dry to obtain the fabric-(APP-PDMS-SiO 2 )-PDA; wherein, the PDA solution is adjusted by adjusting the alcohol suspension containing DA pH to 8.5-9.5, obtained by reaction at 30-35 °C.
在本发明一较佳的实施方案中,所述改性织物的制备方法包括:先进行(3)聚多巴胺(PDA)涂覆,再同时进行(1)聚磷酸铵(APP)涂覆和(2)PDMS-SiO2涂覆。In a preferred embodiment of the present invention, the preparation method of the modified fabric comprises: firstly performing (3) polydopamine (PDA) coating, and then simultaneously performing (1) ammonium polyphosphate (APP) coating and ( 2 ) PDMS-SiO coating.
在该实施方案中,所述改性织物的制备方法较佳地包括:In this embodiment, the preparation method of the modified fabric preferably comprises:
1)将织物与含DA的醇悬浮液混合,调节pH至8.5-9.5,在30-35℃下反应,洗涤并干燥后得织物-PDA;1) Mix the fabric with the alcohol suspension containing DA, adjust the pH to 8.5-9.5, react at 30-35 ° C, wash and dry to obtain the fabric-PDA;
或,将织物与PDA溶液混合,洗涤并干燥后得织物-PDA;其中,所述PDA溶液通过调节含DA的醇悬浮液的pH至8.5-9.5,在30-35℃下反应得到;Or, the fabric is mixed with the PDA solution, washed and dried to obtain the fabric-PDA; wherein, the PDA solution is obtained by adjusting the pH of the DA-containing alcohol suspension to 8.5-9.5, and reacting at 30-35 ° C;
2)将织物-PDA与含APP、TEOS和HPDMS的醇悬浮液混合,调节pH至8.5-9.5,在30-35℃下反应,洗涤并干燥后得织物-PDA-(APP-PDMS-SiO2);2) Mix the fabric-PDA with the alcohol suspension containing APP, TEOS and HPDMS, adjust the pH to 8.5-9.5, react at 30-35°C, wash and dry to obtain the fabric-PDA-(APP-PDMS-SiO 2 ) );
或,将织物与含APP的醇悬浮液和PDMS-SiO2杂化体醇悬浮液混合,洗涤并干燥后得织物-PDA-(APP-PDMS-SiO2);其中,所述PDMS-SiO2杂化体醇悬浮液通过调节含TEOS和HPDMS的醇悬浮液的pH至8.5-9.5,在30-35℃下反应得到;Or, the fabric is mixed with APP-containing alcohol suspension and PDMS-SiO 2 hybrid alcohol suspension, washed and dried to obtain fabric-PDA-(APP-PDMS-SiO 2 ); wherein, the PDMS-SiO 2 The hybrid alcohol suspension is obtained by adjusting the pH of the alcohol suspension containing TEOS and HPDMS to 8.5-9.5, and reacting at 30-35 °C;
或,将织物与含TEOS和APP的醇悬浮液混合,调节pH至8.5-9.5,再与含HPDMS的醇悬浮液混合,在30-35℃下反应,洗涤并干燥后得织物-PDA-(APP-PDMS-SiO2)。Or, mix the fabric with the alcohol suspension containing TEOS and APP, adjust the pH to 8.5-9.5, then mix with the alcohol suspension containing HPDMS, react at 30-35 ° C, wash and dry to obtain the fabric-PDA-( APP-PDMS-SiO 2 ).
在本发明一较佳的实施方案中,所述改性织物的制备方法包括:同时进行(1)聚磷酸铵(APP)涂覆和(3)聚多巴胺(PDA)涂覆,再进行(2)PDMS-SiO2涂覆。In a preferred embodiment of the present invention, the preparation method of the modified fabric comprises: simultaneously performing (1) ammonium polyphosphate (APP) coating and (3) polydopamine (PDA) coating, and then performing (2) ) PDMS - SiO coating.
在该实施方案中,所述改性织物的制备方法较佳地包括:In this embodiment, the preparation method of the modified fabric preferably comprises:
1)将织物与含APP和DA的醇悬浮液混合,调节pH至8.5-9.5,在30-35℃下反应,洗涤并干燥后得织物-(APP-PDA);1) Mix the fabric with the alcohol suspension containing APP and DA, adjust the pH to 8.5-9.5, react at 30-35°C, wash and dry to obtain the fabric-(APP-PDA);
或,将织物与含APP的醇悬浮液和含PDA的溶液混合,洗涤并干燥后得织物-(APP-PDA);其中,所述PDA溶液通过调节含DA的醇悬浮液的pH至8.5-9.5,在30-35℃下反应得到;Or, the fabric is mixed with APP-containing alcohol suspension and PDA-containing solution, washed and dried to obtain fabric-(APP-PDA); wherein, the PDA solution is adjusted to 8.5- by adjusting the pH of the DA-containing alcohol suspension 9.5, obtained by reaction at 30-35°C;
2)将织物-(APP-PDA)与含TEOS和HPDMS的醇悬浮液混合,调节pH至8.5-9.5,在30-35℃下反应,洗涤并干燥后得织物-(APP-PDA)-PDMS-SiO2;2) Mix the fabric-(APP-PDA) with the alcohol suspension containing TEOS and HPDMS, adjust the pH to 8.5-9.5, react at 30-35°C, wash and dry to obtain the fabric-(APP-PDA)-PDMS -SiO 2 ;
或,将织物-(APP-PDA)与聚二甲基化硅烷-二氧化硅杂化体(PDMS-SiO2杂化体)醇悬浮液混合,洗涤并干燥后得织物-(APP-PDA)-PDMS-SiO2;其中,所述PDMS-SiO2杂化体醇悬浮液通过调节含TEOS和HPDMS的醇悬浮液的pH至8.5-9.5,在30-35℃下反应得到;Or, mix fabric-(APP-PDA) with polydimethylsiloxane-silica hybrid (PDMS - SiO hybrid) alcohol suspension, wash and dry to obtain fabric-(APP-PDA) -PDMS-SiO 2 ; wherein, the PDMS-SiO 2 hybrid alcohol suspension is obtained by adjusting the pH of the alcohol suspension containing TEOS and HPDMS to 8.5-9.5, and reacting at 30-35° C.;
或,将织物-(APP-PDA)与含TEOS的醇悬浮液混合,调节pH至8.5-9.5,再与含HPDMS的醇悬浮液混合,在30-35℃下反应,洗涤并干燥后得织物-(APP-PDA)-PDMS-SiO2。Or, mix the fabric-(APP-PDA) with the alcohol suspension containing TEOS, adjust the pH to 8.5-9.5, then mix with the alcohol suspension containing HPDMS, react at 30-35°C, wash and dry to obtain the fabric -(APP-PDA)-PDMS- SiO2 .
在本发明一较佳的实施方案中,所述改性织物的制备方法包括:先进行(1)聚磷酸铵(APP)涂覆,再同时进行(2)PDMS-SiO2涂覆和(3)聚多巴胺(PDA)涂覆。In a preferred embodiment of the present invention, the preparation method of the modified fabric comprises: firstly performing (1) ammonium polyphosphate (APP) coating, and then simultaneously performing (2) PDMS-SiO 2 coating and (3) ) polydopamine (PDA) coating.
在该实施方案中,所述改性织物的制备方法较佳地包括:In this embodiment, the preparation method of the modified fabric preferably comprises:
1)将织物与含APP的醇悬浮溶液混合,洗涤并干燥后得织物-APP;1) Mix the fabric with the alcoholic suspension solution containing APP, wash and dry to obtain the fabric-APP;
2)将织物-APP与含TEOS、HPDMS和DA的醇悬浮液混合,调节pH至8.5-9.5,在30-35℃下反应,洗涤并干燥后得织物-APP-(PDMS-SiO2-PDA);2) Mix the fabric-APP with the alcohol suspension containing TEOS, HPDMS and DA, adjust the pH to 8.5-9.5, react at 30-35°C, wash and dry to obtain the fabric-APP-(PDMS-SiO 2 -PDA) );
或,将织物-APP与含TEOS、HPDMS的醇悬浮液和PDA溶液混合,调节pH至8.5-9.5,在30-35℃下反应,洗涤并干燥后得织物-APP-(PDMS-SiO2-PDA);其中,所述PDA溶液通过调节含DA的醇悬浮液的pH至8.5-9.5,在30-35℃下反应得到;Or, mix fabric-APP with alcohol suspension containing TEOS, HPDMS and PDA solution, adjust pH to 8.5-9.5, react at 30-35°C, wash and dry to obtain fabric-APP-(PDMS-SiO 2 - PDA); wherein, the PDA solution is obtained by adjusting the pH of the alcohol suspension containing DA to 8.5-9.5 and reacting at 30-35 °C;
或,将织物-APP与聚二甲基化硅烷-二氧化硅杂化体(PDMS-SiO2杂化体)醇悬浮液和含DA的醇悬浮液混合,调节pH至8.5-9.5,在30-35℃下反应,洗涤并干燥后得织物-APP-(PDMS-SiO2-PDA);其中,所述PDMS-SiO2杂化体醇悬浮液通过调节含TEOS和HPDMS的醇悬浮液的pH至8.5-9.5,在30-35℃下反应得到。Alternatively, mix fabric-APP with polydimethylsiloxane-silica hybrid (PDMS - SiO hybrid) alcoholic suspension and DA-containing alcoholic suspension, adjust pH to 8.5-9.5, at 30 React at -35°C, wash and dry to obtain fabric-APP-(PDMS-SiO 2 -PDA); wherein, the PDMS-SiO 2 hybrid alcohol suspension is adjusted by adjusting the pH of the alcohol suspension containing TEOS and HPDMS To 8.5-9.5, the reaction was obtained at 30-35 °C.
或,将织物-APP与聚二甲基化硅烷-二氧化硅杂化体(PDMS-SiO2杂化体)醇悬浮液和PDA溶液混合,洗涤并干燥后得织物-APP-(PDMS-SiO2-PDA);其中,所述PDA溶液通过调节含DA的醇悬浮液的pH至8.5-9.5,在30-35℃下反应得到;所述PDMS-SiO2杂化体醇悬浮液通过调节含TEOS和HPDMS的醇悬浮液的pH至8.5-9.5,在30-35℃下反应得到;Or, mix fabric-APP with polydimethylsilane-silica hybrid (PDMS - SiO hybrid) alcohol suspension and PDA solution, wash and dry to obtain fabric-APP-(PDMS-SiO 2 -PDA); wherein, the PDA solution is obtained by adjusting the pH of the DA-containing alcohol suspension to 8.5-9.5, and reacting at 30-35 ° C; the PDMS-SiO 2 hybrid alcohol suspension is obtained by adjusting the pH of the alcohol suspension containing The pH of the alcoholic suspension of TEOS and HPDMS is 8.5-9.5, and the reaction is obtained at 30-35 °C;
或,将织物-APP与含TEOS和DA的醇悬浮液混合,调节pH至8.5-9.5,再与含HPDMS的醇悬浮液混合,在30-35℃下反应,洗涤并干燥后得织物-APP-(PDMS-SiO2-PDA);Or, mix fabric-APP with alcohol suspension containing TEOS and DA, adjust pH to 8.5-9.5, then mix with alcohol suspension containing HPDMS, react at 30-35°C, wash and dry to obtain fabric-APP -(PDMS- SiO2 -PDA);
或,将织物-APP与含TEOS的醇悬浮液和PDA溶液混合,调节pH至8.5-9.5,再与含HPDMS的醇悬浮液混合,在30-35℃下反应,洗涤并干燥后得织物-APP-(PDMS-SiO2-PDA);其中,所述PDA溶液通过调节含DA的醇悬浮液的pH至8.5-9.5,在30-35℃下反应得到。Or, mix fabric-APP with TEOS-containing alcohol suspension and PDA solution, adjust pH to 8.5-9.5, then mix with HPDMS-containing alcohol suspension, react at 30-35°C, wash and dry to obtain fabric- APP-(PDMS-SiO 2 -PDA); wherein, the PDA solution is obtained by adjusting the pH of the DA-containing alcohol suspension to 8.5-9.5 and reacting at 30-35°C.
本发明中,在上述各较佳的技术方案中,在含有APP、TEOS、HPDMS和DA中一种或多种的醇悬浮液中,APP、TEOS和HPDMS的浓度较佳地各自独立地为30-50g/L,DA的浓度较佳地为1-2.5g/L。In the present invention, in the above-mentioned preferred technical solutions, in the alcohol suspension containing one or more of APP, TEOS, HPDMS and DA, the concentrations of APP, TEOS and HPDMS are preferably independently 30 -50g/L, the concentration of DA is preferably 1-2.5g/L.
本发明中,在上述各较佳的技术方案中,所述醇悬浮液中的醇可为本领域常规,例如乙醇、丙醇、丁醇等,较佳地为乙醇。In the present invention, in the above preferred technical solutions, the alcohol in the alcohol suspension can be conventional in the art, such as ethanol, propanol, butanol, etc., preferably ethanol.
本发明中,在上述各较佳的技术方案中,所述反应的时间可为8~10h。In the present invention, in each of the above preferred technical solutions, the reaction time may be 8-10 h.
本发明中,在上述各较佳的技术方案中,可采用本领域常规的方法调节pH。调节pH的物质较佳地为氨水、氢氧化钾、氢氧化钠、碳酸钠和碳酸钾中的一种或多种。In the present invention, in each of the above-mentioned preferred technical solutions, the pH can be adjusted by a conventional method in the art. The substance for adjusting pH is preferably one or more of ammonia water, potassium hydroxide, sodium hydroxide, sodium carbonate and potassium carbonate.
本发明中,较佳地,在进行步骤(1)、(2)和(3)之后,所述改性织物的制备方法还包括涂覆Ag的步骤。In the present invention, preferably, after performing steps (1), (2) and (3), the preparation method of the modified fabric further includes the step of coating Ag.
所述涂覆Ag的操作较佳地包括:将织物-(APP-PDMS-SiO2-PDA)与AgNO3水溶液混合,在20-30℃下反应,洗涤并干燥,得到织物-(APP-PDMS-SiO2-PDA-Ag)。由于PDA中的邻苯二酚部分具有氧化还原活性,从而Ag+被还原成银纳米粒子,并均匀分布在改性织物上,从而得到兼具阻燃、抗菌和超疏水性能的改性织物。The operation of coating Ag preferably includes: mixing the fabric-(APP-PDMS-SiO 2 -PDA) with the AgNO 3 aqueous solution, reacting at 20-30° C., washing and drying to obtain the fabric-(APP-PDMS -SiO 2 -PDA-Ag). Due to the redox activity of the catechol moiety in PDA, Ag is reduced to silver nanoparticles and uniformly distributed on the modified fabric, resulting in a modified fabric with flame-retardant, antibacterial and superhydrophobic properties.
其中,较佳地,所述织物与AgNO3水溶液的质量比为1:(20~30)。Wherein, preferably, the mass ratio of the fabric to the AgNO 3 aqueous solution is 1:(20-30).
较佳地,所述AgNO3水溶液的浓度为5-10g/L。Preferably, the concentration of the AgNO 3 aqueous solution is 5-10 g/L.
较佳地,所述反应的时间为7-8h。Preferably, the reaction time is 7-8h.
本发明中,较佳地,在进行步骤(1)、(2)和(3)之前,所述改性织物的制备方法还包括对织物进行前处理的步骤。所述前处理的目的是增加织物表面的羧基。所述前处理的操作一般包括:将织物与碱性溶液混合,在80-90℃下处理20-30min后进行干燥。In the present invention, preferably, before performing steps (1), (2) and (3), the preparation method of the modified fabric further includes the step of pre-treating the fabric. The purpose of the pretreatment is to increase the carboxyl groups on the surface of the fabric. The operation of the pretreatment generally includes: mixing the fabric with an alkaline solution, and drying it after treating at 80-90° C. for 20-30 min.
较佳地,所述碱性溶液为氢氧化钠水溶液。Preferably, the alkaline solution is an aqueous sodium hydroxide solution.
较佳地,所述氢氧化钠水溶液的浓度为30-40g/L。Preferably, the concentration of the sodium hydroxide aqueous solution is 30-40 g/L.
本发明中,所述织物-(APP-PDMS-SiO2-PDA)、所述织物-APP、所述织物-APP-PDMS-SiO2、所述织物-APP-PDMS-SiO2-PDA、所述织物-APP-PDA、所述织物-APP-PDA-PDMS-SiO2、所述织物-PDA、所述织物-PDA-APP、所述织物-PDA-APP-PDMS-SiO2、所述织物-(APP-PDMS-SiO2)、所述织物-(APP-PDMS-SiO2)-PDA、所述织物-PDA-(APP-PDMS-SiO2)、所述织物-(APP-PDA)、所述织物-(APP-PDA)-PDMS-SiO2、所述织物-APP-(PDMS-SiO2-PDA)、所述织物-(APP-PDMS-SiO2-PDA-Ag)仅用于简化上述各方案制备得到的改性织物的表述,不对改性织物表面的涂层顺序产生限制。In the present invention, the fabric-(APP-PDMS-SiO 2 -PDA), the fabric-APP, the fabric-APP-PDMS-SiO 2 , the fabric-APP-PDMS-SiO 2 -PDA, the fabric-APP-PDMS-SiO 2 -PDA, the The fabric-APP-PDA, the fabric-APP-PDA-PDMS-SiO 2 , the fabric-PDA, the fabric-PDA-APP, the fabric-PDA-APP-PDMS-SiO 2 , the fabric -(APP-PDMS- SiO2 ), the fabric-(APP-PDMS- SiO2 )-PDA, the fabric-PDA-(APP-PDMS- SiO2 ), the fabric-(APP-PDA), The fabric-(APP-PDA)-PDMS- SiO2 , the fabric-APP-(PDMS- SiO2 -PDA), the fabric-(APP-PDMS- SiO2 -PDA-Ag) are for simplification only The description of the modified fabrics prepared by the above schemes does not limit the coating sequence on the surface of the modified fabrics.
本发明中,所述混合可采用本领域常规的方法进行,一般可为搅拌或浸入。In the present invention, the mixing can be performed by a conventional method in the art, generally stirring or immersion.
本发明中,所述洗涤可采用本领域常规的方法进行,一般可为用去离子水冲洗。In the present invention, the washing can be carried out by a conventional method in the art, and generally can be washed with deionized water.
本发明中,所述干燥可采用本领域常规的方法进行,能够去除织物表面的溶剂即可。所述干燥的温度较佳地为60-100℃。In the present invention, the drying can be performed by a conventional method in the art, as long as the solvent on the surface of the fabric can be removed. The drying temperature is preferably 60-100°C.
本发明中,所述织物可为PET、蚕丝、尼龙和棉织物中的一种或多种。所述织物较佳地为PET织物。In the present invention, the fabric can be one or more of PET, silk, nylon and cotton fabrics. The fabric is preferably a PET fabric.
本发明还提供一种改性织物,其根据前述改性织物的制备方法制备得到。The present invention also provides a modified fabric, which is prepared according to the aforementioned preparation method of the modified fabric.
本发明还提供所述改性织物在户外用品、室内装饰或消防用品领域中的应用。The present invention also provides the application of the modified fabric in the field of outdoor products, interior decoration or fire protection products.
在符合本领域常识的基础上,上述各优选条件,可任意组合,即得本发明各较佳实例。On the basis of conforming to common knowledge in the art, the above preferred conditions can be combined arbitrarily to obtain preferred examples of the present invention.
本发明所用试剂和原料均市售可得。The reagents and raw materials used in the present invention are all commercially available.
本发明的积极进步效果在于:The positive progressive effect of the present invention is:
本发明的改性织物制备方法将APP、PDMS-SiO2和PDA改性巧妙结合,一方面,APP与SiO2有协同作用,可同时增强织物的阻燃性和超疏水性;另一方面,由于PDA所含的邻苯二酚部分具有强粘附力,可以粘附在APP和SiO2上,形成微纳米级的APP-SiO2-PDA聚集体,APP-SiO2-PDA聚集体可以粘附在织物表面,这样使得织物即使在多次洗涤循环后,其阻燃性和超疏水性仍得以保持。The modified fabric preparation method of the present invention skillfully combines the modification of APP, PDMS-SiO 2 and PDA. On the one hand, APP and SiO 2 have a synergistic effect, which can simultaneously enhance the flame retardancy and super-hydrophobicity of the fabric; on the other hand, Since the catechol moiety contained in PDA has strong adhesion, it can adhere to APP and SiO2 , forming micro-nano-scale APP- SiO2 -PDA aggregates, and APP- SiO2 -PDA aggregates can adhere to Attached to the surface of the fabric, this allows the fabric to maintain its flame retardancy and superhydrophobicity even after multiple washing cycles.
进一步地通过PDA本身的还原活性,在没有外加还原剂的条件下,将Ag附着在织物上,使改性织物同时具有阻燃性、超疏水性和抗菌性。Further, through the reducing activity of PDA itself, Ag is attached to the fabric without external reducing agent, so that the modified fabric has flame retardancy, superhydrophobicity and antibacterial properties at the same time.
另外,本发明中用后整理法对织物进行改性,制备过程简便且在常温下即可进行,耗能小。In addition, in the present invention, the fabric is modified by the post-finishing method, the preparation process is simple and can be carried out at normal temperature, and the energy consumption is small.
附图说明Description of drawings
图1为本发明实施例1~3中改性织物的制备过程示意图。Fig. 1 is a schematic diagram of the preparation process of the modified fabrics in Examples 1-3 of the present invention.
图2为本发明实施例1中改性织物的SEM图。Figure 2 is a SEM image of the modified fabric in Example 1 of the present invention.
具体实施方式Detailed ways
下面通过实施例的方式进一步说明本发明,但并不因此将本发明限制在所述的实施例范围之中。下列实施例中未注明具体条件的实验方法,按照常规方法和条件,或按照商品说明书选择。The present invention is further described below by way of examples, but the present invention is not limited to the scope of the described examples. The experimental methods that do not specify specific conditions in the following examples are selected according to conventional methods and conditions, or according to the product description.
本发明中实施例1~3均按照如图1所示的制备过程进行织物改性。In the present invention, Examples 1 to 3 all carry out fabric modification according to the preparation process shown in FIG. 1 .
实施例1Example 1
将5cm*5cm的PET织物与1M NaOH水溶液混合,在90℃下处理30min,60℃干燥后备用。The 5cm*5cm PET fabric was mixed with 1M NaOH aqueous solution, treated at 90°C for 30min, and dried at 60°C for use.
将碱处理过的PET织物与含有乙醇(100ml)、聚磷酸铵(APP)(4g)、四乙氧基硅烷(TEOS)(4g)、羟基封端的聚二甲基硅氧烷(HPDMS)(4g)和多巴胺盐酸盐(DA)(0.1g)的悬浮液混合,搅拌30min后,加入氨水将pH调至9,在30℃下反应8h,取出织物后用去离子水洗涤,在60℃下烘干,得到织物-(APP-PDMS-SiO2-PDA)。Alkali-treated PET fabric was mixed with ethanol (100ml), ammonium polyphosphate (APP) (4g), tetraethoxysilane (TEOS) (4g), hydroxyl terminated polydimethylsiloxane (HPDMS) ( 4g) and a suspension of dopamine hydrochloride (DA) (0.1g), stir for 30min, add ammonia water to adjust the pH to 9, react at 30°C for 8h, take out the fabric and wash with deionized water, at 60°C Under drying, the fabric-(APP-PDMS-SiO 2 -PDA) was obtained.
将织物-(APP-PDMS-SiO2-PDA)与10g/L的AgNO3水溶液混合,在30℃下以1:20的质量比处理7h,取出织物后用去离子水洗涤,在60℃下烘干,得到织物-(APP-PDMS-SiO2-PDA-Ag),也即改性PET织物,该改性PET织物的SEM图像如图2所示。The fabric-(APP-PDMS-SiO 2 -PDA) was mixed with 10 g/L AgNO 3 aqueous solution, treated at 30 °C with a mass ratio of 1:20 for 7 h, and the fabric was taken out and washed with deionized water at 60 °C. After drying, a fabric-(APP-PDMS-SiO 2 -PDA-Ag) is obtained, that is, a modified PET fabric. The SEM image of the modified PET fabric is shown in FIG. 2 .
实施例2Example 2
将5cm*5cm的PET织物与1M NaOH水溶液混合,在90℃下处理30min,60℃干燥后备用。The 5cm*5cm PET fabric was mixed with 1M NaOH aqueous solution, treated at 90°C for 30min, and dried at 60°C for use.
将碱处理的PET织物与含有乙醇(110ml)、聚磷酸铵(APP)(4.5g)、四乙氧基硅烷(TEOS)(4.5g)、羟基封端的聚二甲基硅氧烷(HPDMS)(4.5g)和多巴胺盐酸盐(DA)(0.1g)的悬浮液混合,搅拌30min后,加入氨水将pH调至9,在30℃下反应8h,取出织物后用去离子水洗涤,在60℃下烘干,得到织物-(APP-PDMS-SiO2-PDA)。Alkali-treated PET fabric was mixed with ethanol (110 ml), ammonium polyphosphate (APP) (4.5 g), tetraethoxysilane (TEOS) (4.5 g), hydroxyl terminated polydimethylsiloxane (HPDMS) (4.5g) and a suspension of dopamine hydrochloride (DA) (0.1g) were mixed, and after stirring for 30min, ammonia water was added to adjust the pH to 9, and the reaction was carried out at 30°C for 8h. Dry at 60°C to obtain fabric-(APP-PDMS-SiO 2 -PDA).
将织物-(APP-PDMS-SiO2-PDA)与10g/L的AgNO3水溶液混合,在30℃下以1:20的质量比处理7h,取出织物后用去离子水洗涤,在60℃下烘干,得到织物-(APP-PDMS-SiO2-PDA-Ag),也即改性PET织物。The fabric-(APP-PDMS-SiO 2 -PDA) was mixed with 10 g/L AgNO 3 aqueous solution, treated at 30 °C with a mass ratio of 1:20 for 7 h, and the fabric was taken out and washed with deionized water at 60 °C. Dry to obtain fabric-(APP-PDMS-SiO 2 -PDA-Ag), that is, modified PET fabric.
实施例3Example 3
将5cm*5cm的PET织物与1M NaOH水溶液混合,在90℃下处理30min,60℃干燥后备用。The 5cm*5cm PET fabric was mixed with 1M NaOH aqueous solution, treated at 90°C for 30min, and dried at 60°C for use.
将碱处理的PET织物与含有乙醇(150ml)、聚磷酸铵(APP)(5g)、四乙氧基硅烷(TEOS)(5g)、羟基封端的聚二甲基硅氧烷(HPDMS)(5g)和多巴胺盐酸盐(DA)(0.15g)的悬浮液混合,搅拌30min后,加入氨水将pH调至9,在30℃下反应8h,取出织物后用去离子水洗涤,在60℃下烘干,得到织物-(APP-PDMS-SiO2-PDA)。Alkali-treated PET fabric was mixed with ethanol (150ml), ammonium polyphosphate (APP) (5g), tetraethoxysilane (TEOS) (5g), hydroxyl terminated polydimethylsiloxane (HPDMS) (5g) ) and the suspension of dopamine hydrochloride (DA) (0.15g), stir for 30min, add ammonia water to adjust the pH to 9, react at 30°C for 8h, take out the fabric and wash with deionized water, at 60°C After drying, a fabric-(APP-PDMS-SiO 2 -PDA) was obtained.
将织物-(APP-PDMS-SiO2-PDA)与10g/L的AgNO3水溶液混合,在30℃下以1:20的质量比处理7h,取出织物后用去离子水洗涤,在60℃下烘干,得到织物-(APP-PDMS-SiO2-PDA-Ag),也即改性PET织物。The fabric-(APP-PDMS-SiO 2 -PDA) was mixed with 10 g/L AgNO 3 aqueous solution, treated at 30 °C with a mass ratio of 1:20 for 7 h, and the fabric was taken out and washed with deionized water at 60 °C. Dry to obtain fabric-(APP-PDMS-SiO 2 -PDA-Ag), that is, modified PET fabric.
效果实施例1Effect Example 1
将实施例1-3得到的改性PET织物进行阻燃性能的检测。采用国际标准ASTMd2863-2000,通过HC-2氧指数测定仪测试织物的极限氧指数,样条尺寸为5*10cm。燃烧过程观察改性PET织物是否熔滴。The flame retardant properties of the modified PET fabrics obtained in Examples 1-3 were tested. Using the international standard ASTMd2863-2000, the limiting oxygen index of the fabric is tested by the HC-2 oxygen index tester, and the spline size is 5*10cm. Observe whether the modified PET fabric is molten or not during the combustion process.
表1改性PET织物的阻燃性能测试结果Table 1 Test results of flame retardant properties of modified PET fabrics
如表1的织物质量增重数据可以看出,实施例1-3所制备的改性PET织物表面均成功涂覆了功能改性剂;从熔滴的数据可以看出,所制备的改性PET织物在燃烧过程中均无熔滴现象。从极限氧指数的数据可以看出,所制备的改性PET织物具有优异的阻燃性能,阻燃的机理归纳为:在燃烧过程中,PDMS-SiO2会生成热稳定性的SiO2,它们可能会阻挡氧气和热量以及易燃挥发物,从而减慢火焰在织物上的扩散,但是这种疏松的物理屏障层并无法完全熄灭火焰,当SiO2和APP复合时,在物理阻隔作用和膨胀阻燃作用下,可以在PET织物上产生致密且膨胀的炭层,从而有效地熄灭火焰。As can be seen from the fabric weight gain data in Table 1, the modified PET fabrics prepared in Examples 1-3 were successfully coated with functional modifiers; There is no droplet phenomenon in the PET fabric during the combustion process. From the data of limiting oxygen index, it can be seen that the prepared modified PET fabric has excellent flame retardant properties. The mechanism of flame retardant can be summarized as follows: during the combustion process, PDMS-SiO 2 will generate thermally stable SiO 2 , which May block oxygen and heat and flammable volatiles, thereby slowing the spread of flame on the fabric, but this loose physical barrier layer cannot completely extinguish the flame, when SiO2 and APP are compounded, the physical barrier effect and expansion Under the action of flame retardant, a dense and expanded carbon layer can be produced on the PET fabric, thereby effectively extinguishing the flame.
效果实施例2Effect Example 2
将实施例1-3得到的改性PET织物进行抗菌性能的检测。采用抗菌标准QB/T2591-2003测试织物的抗菌性能。The antibacterial properties of the modified PET fabrics obtained in Examples 1-3 were tested. The antibacterial properties of the fabrics were tested by the antibacterial standard QB/T2591-2003.
表2改性PET织物的抗菌性能测试结果Table 2 Test results of antibacterial properties of modified PET fabrics
如表2的结果可知,所制备的改性PET织物具有优异的抗菌性能,抗菌机理归纳为:织物可以释放Ag+,从而抑制细菌的生长。As can be seen from the results in Table 2, the prepared modified PET fabric has excellent antibacterial properties, and the antibacterial mechanism is summarized as: the fabric can release Ag + , thereby inhibiting the growth of bacteria.
效果实施例3Effect Example 3
将实施例1-3得到的改性PET织物进行疏水性能的检测。疏水性能检测是通过测定改性PET织物的水接触角来进行的。接触角测试采用DSA100的接触角测试仪来评估织物的WCA。The hydrophobic properties of the modified PET fabrics obtained in Examples 1-3 were tested. The hydrophobic properties were tested by measuring the water contact angle of the modified PET fabrics. Contact angle testing The WCA of the fabrics was evaluated using a DSA100 contact angle tester.
表3改性PET织物的疏水性能测试结果Table 3 Test results of hydrophobic properties of modified PET fabrics
由表3的水接触角数据可知,所制备的改性PET织物的水接触角均大于90°,表明液滴在所制备的改性PET织物表面呈收缩状态,沿改性PET织物表面聚集成珠状,改性PET织物表面不易被润湿,表现为疏水。It can be seen from the water contact angle data in Table 3 that the water contact angles of the prepared modified PET fabrics are all greater than 90°, indicating that the droplets are in a shrinking state on the surface of the prepared modified PET fabric, and aggregate along the surface of the modified PET fabric into Bead-shaped, the surface of modified PET fabric is not easily wetted and is hydrophobic.
效果实施例4Effect Example 4
耐水洗性能检测是通过测定多次水洗后的改性PET织物的极限氧指数、抗大肠杆菌率和抗金黄色葡萄球菌率来进行的。The washing resistance test was carried out by measuring the limiting oxygen index, anti-Escherichia coli rate and anti-Staphylococcus aureus rate of the modified PET fabric after multiple washings.
由表3的结果可知,实施例1-3制备得到的改性PET织物的阻燃性和抗菌性能不会随着洗涤次数的增加而明显下降,说明改性PET织物具有良好的耐水洗性。It can be seen from the results in Table 3 that the flame retardancy and antibacterial properties of the modified PET fabrics prepared in Examples 1-3 do not decrease significantly with the increase of washing times, indicating that the modified PET fabrics have good washing resistance.
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