CN106149387A - 一种光固化耐久液晶热变色服装面料的制备方法 - Google Patents
一种光固化耐久液晶热变色服装面料的制备方法 Download PDFInfo
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Abstract
本发明涉及一种光固化耐久液晶热变色服装面料的制备方法，该方法包括：(1)液晶微胶囊的制备；(2)配制含液晶微胶囊的涂层浆；(3)将含液晶微胶囊的涂层浆涂覆在织物上，烘干，紫外固化。本发明得到的热变色服装面料具有优异的耐水洗牢度和耐磨性能；此外，采用紫外光(UV)固化方式，颠覆了传统加热焙烘的固化方式，不仅减少了天然气、石油液化气、煤等多种能源的使用，同时能为企业大幅度降低生产成本，提高生产效率。
Description
技术领域
本发明属于纺织品后整理领域，特别涉及一种光固化耐久液晶热变色服装面料的制备方法。
背景技术
液晶是物质除固态、液态、气态之外的一种奇异的凝聚态，它既有类似晶体的各向异性，又具有液体的流动性。其中热致液晶中的胆甾相液晶具有动态热色效应、示温可逆可重复、响应速度快和耐光稳定性好等特点。将其制作成液晶微胶囊并印在服装面料上，可使服装面料上的图案随温度变化而改变颜色，达到装饰的效果，使用这种液晶微胶囊整理的服装在常温下可五彩变换，给服装带来动感和美感，更受市场欢迎。
对织物进行耐久性的液晶热变色整理具有广阔的商业前景，但同时也是服装面料领域的一大挑战。这挑战包括两个方面，首先，液晶物质必须不受外界污染；其次，施加到织物上的液晶物质必须具有较好的牢度。采用微胶囊技术将液晶包覆在内，既可以保护液晶材料不受外界污染，又可使液晶材料的性能有效挥发。然而，目前常用的方法是将含有液晶微胶囊的粘合剂涂覆在织物上而后经受一个热焙烘过程。在这个过程中，织物经受数分钟的高温，从而使得粘合剂的组分在织物上交联形成网络结构从而锚固住液晶微胶囊。虽然热焙烘能够提供较好的牢度，但是其一定时间的高温处理会使微胶囊的壁材破裂，导致液晶受到污染，降低液晶热变色服装面料的耐久性和使用寿命，而且热焙烘也消耗大量能源，增加企业负担。
发明内容
本发明所要解决的技术问题是提供一种光固化耐久液晶热变色服装面料的制备方法。本发明整理的热变色服装面料具有很好的耐水洗牢度和耐磨性能。此外，采用UV固化方式，颠覆了传统加热焙烘的固化方式，节能环保，同时能为企业大幅度降低生产成本，提高生产效率。
本发明所要解决的技术问题是提供一种光固化耐久液晶热变色服装面料的制备方法，本发明整理的热变色服装面料具有很好的耐水洗牢度和耐磨性能。此外，采用UV固化方式，颠覆了传统加热焙烘的固化方式，节能环保，同时能为企业大幅度降低生产成本，提高生产效率。
本发明的一种光固化耐久液晶热变色服装面料的低碳制备方法，该方法包括：
(1)液晶微胶囊的制备；
(2)配制含液晶微胶囊的涂层浆；
(3)将含液晶微胶囊的涂层浆涂覆在织物上，烘干，紫外固化。
所述步骤(1)中液晶成分包括胆甾醇油烯基碳酸酯(COC)，胆固醇壬酸酯(CPE)，氯化胆固醇(CC)，胆固醇丙酸酯(CPR)，胆甾醇苯甲酸酯(CBZ)，胆固醇碳酸酯(DCC)，丙烯酸胆甾醇酯(CAE)，胆甾烯基对壬基苯基碳酸酯(CNPC)中的至少两种。
所述步骤(1)中液晶微胶囊的制备工艺流程为：40℃下各取30mL 10g/L的明胶和10g/L阿拉伯胶混合，加入20mL含量为5g/L的芯材混合液晶二氯甲烷溶液，以10000r/min-20000r/min剪切5-10分钟得到分散乳液；将混合相移入三口瓶中，用10％的醋酸溶液调节pH＝4，搅拌30min后，冰水降温至5℃以下，加入与明胶等量的37％甲醛溶液，再继续搅拌30分钟，使微胶囊囊壁固化变硬，加入10％的氢氧化钠溶液调节pH值至9，继续搅拌2h，使溶液缓慢升至室温；最后进行抽滤，获得液晶微胶囊。
所述步骤(2)中的涂层浆按质量百分比计算，其原料组分为：
液晶微胶囊 5-10%；
水性UV树脂 25-40%
水性光引发剂 1-7%
合成增稠剂PTF 0.5-2%
去离子水 41-68.5%
所述的水性UV树脂为脂肪族聚氨酯丙烯酸酯水溶液(上海氰特化工UCECOAT6558)、含水脂肪族聚氨酯丙烯酸酯(上海氰特化工UCECOAT7177)、水溶性聚氨酯丙烯酸酯(巴斯夫PE55WN)中的至少一种。
所述的水性光引发剂为2-羟基-4’-(2-羟乙氧基)-2-甲基苯丙酮(汽巴IRGACURE2959)、水溶性二苯甲酮衍生物季铵盐(BTC、BPQ)、2-羟基-2-甲基-1-(4-甲基乙稀基-苯基)丙酮(宁柏迪KIP150)稳定水乳液和双(2，4，6-三甲基苯甲酰基)苯基氧化磷(汽巴IRGACURE819)稳定水乳液中的至少一种。
所述步骤(3)中的织物为棉、毛、麻、涤纶、黏胶或尼龙织物。
所述步骤(3)中的烘干温度为50-70℃，时间5-8min。
所述步骤(3)中的紫外光固化使用高压汞灯，功率为1000W，汞灯与织物距离为2-4cm，固化时间为3-5min。
本发明将含液晶微胶囊的涂层浆涂覆在织物上，烘干，紫外固化，制得具有耐久性的液晶热变色服装面料。由于采用含水性UV树脂和水性光引发剂的粘合剂，在紫外线光照射时产生自由基，自由基进攻预聚体从而产生链增长反应，最终形成网状结构从而粘固液晶微胶囊。整个过程在较低温度下进行，颠覆了传统加热焙烘的固化方式，节能环保。
有益效果
(1)本发明的热变色服装面料整理方法低碳节能、高效、环保，具有广阔的市场应用前景和良好的社会效益。
(2)经本发明整理的热变色服装面料具有很好的耐水洗牢度和耐磨性能。
具体实施方式
下面结合具体实施例，进一步阐述本发明。应理解，这些实施例仅用于说明本发明而不用于限制本发明的范围。此外应理解，在阅读了本发明讲授的内容之后，本领域技术人员可以对本发明作各种改动或修改，这些等价形式同样落于本申请所附权利要求书所限定的范围。
实施例1
40℃下各取30mL 10g/L的明胶和10g/L阿拉伯胶混合，加入20mL含量为5g/L的芯材混合液晶二氯甲烷溶液，以10000r/min剪切5分钟得到分散乳液；将混合相移入三口瓶中，用10％的醋酸溶液调节pH＝4，搅拌30min后，冰水降温至5℃以下，加入与明胶等量的37％甲醛溶液，再继续搅拌30分钟，使微胶囊囊壁固化变硬，加入10％的氢氧化钠溶液调节pH值至9，继续搅拌2h，使溶液缓慢升至室温；最后进行抽滤，获得液晶微胶囊。(其中所述的混合液晶为胆甾醇壬酸酯(CPE)、胆甾醇油烯基碳酸酯(COC)，其比例为40∶60)。
配置涂层浆。原料组分为：液晶微胶囊10g、水性UV树脂UCECOAT6558(上海氰特化工)40g、水性光引发剂IRGACURE2959(汽巴)6g、合成增稠剂0.5g、去离子水43.5g。
棉织物经涂层后在50℃下烘干处理8min，最后于1000W的紫外灯下固化5min，汞灯与织物距离为2cm，得到液晶热变色服装面料。
所得液晶热变色服装面料在27℃时为红色，28℃时为绿色，29℃时为紫色，30℃以上为无色。可耐30次家庭洗涤(GB/T8629-2001)，10000次摩擦(ISO 12947-2-1998)。
实施例2
40℃下各取30mL 10g/L的明胶和10g/L阿拉伯胶混合，加入20mL含量为5g/L的芯材混合液晶二氯甲烷溶液，以20000r/min剪切10分钟得到分散乳液；将混合相移入三口瓶中，用10％的醋酸溶液调节pH＝4，搅拌30min后，冰水降温至5℃以下，加入与明胶等量的37％甲醛溶液，再继续搅拌30分钟，使微胶囊囊壁固化变硬，加入10％的氢氧化钠溶液调节pH值至9，继续搅拌2h，使溶液缓慢升至室温；最后进行抽滤，获得液晶微胶囊。(其中所述的混合液晶为胆固醇壬酸酯(CPE)，氯化胆固醇(CC)，胆固醇碳酸酯(DCC)，胆甾烯基对壬基苯基碳酸酯(CNPC)，其比例为45∶10∶15∶30)。
配置涂层浆。原料组分为：液晶微胶囊6g、水性UV树脂UCECOAT7177(上海氰特化工)30g、水性光引发剂IRGACURE819(汽巴)2g、合成增稠剂1g、去离子水61g。
棉织物经涂层后在65℃下烘干处理5min，最后于1000W的紫外灯下固化3min，汞灯与织物距离为4cm，得到液晶热变色服装面料。
所得液晶热变色服装面料在22℃时为红色，26℃时为蓝色。可耐20次家庭洗涤(GB/T8629-2001)，10000次摩擦(ISO 12947-2-1998)。
实施例3
40℃下各取30mL 10g/L的明胶和10g/L阿拉伯胶混合，加入20mL含量为5g/L的芯材混合液晶二氯甲烷溶液，以15000r/min剪切7分钟得到分散乳液；将混合相移入三口瓶中，用10％的醋酸溶液调节pH＝4，搅拌30min后，冰水降温至5℃以下，加入与明胶等量的37％甲醛溶液，再继续搅拌30分钟，使微胶囊囊壁固化变硬，加入10％的氢氧化钠溶液调节pH值至9，继续搅拌2h，使溶液缓慢升至室温；最后进行抽滤，获得液晶微胶囊。(其中所述的混合液晶为胆固醇壬酸酯(CPE)，胆甾醇苯甲酸酯(CBZ)，胆固醇碳酸酯(DCC)，胆甾烯基对壬基苯基碳酸酯(CNPC)，其比例为36.8∶15.1∶19.2∶28.9)。
配置涂层浆。原料组分为：液晶微胶囊8g、水性UV树脂UCECOAT6558(上海氰特化工)35g、水性光引发剂IRGACURE819(汽巴)4g、合成增稠剂0.5g、去离子水52.5g。
棉织物经涂层后在60℃下烘干处理6min，最后于1000W的紫外灯下固化4min，汞灯与织物距离为3cm，得到液晶热变色服装面料。
所得液晶热变色服装面料在27℃时为红色，32.5℃时为蓝色。可耐25次家庭洗涤(GB/T8629-2001)，10000次摩擦(ISO 12947-2-1998)。
Claims (9)
1.一种光固化耐久液晶热变色服装面料的制备方法，包括如下步骤：
(1)液晶微胶囊的制备；
(2)配制含液晶微胶囊的涂层浆；
(3)将含液晶微胶囊的涂层浆涂覆在织物上，烘干，紫外固化。
2.如权利要求1所述的一种光固化耐久液晶热变色服装面料的制备方法，其特征在于：所述步骤(1)中液晶微胶囊的制备工艺流程为：40℃下各取30mL 10g/L的明胶和10g/L阿拉伯胶混合，加入20mL含量为5g/L的芯材混合液晶二氯甲烷溶液，以10000r/min-20000r/min剪切5-10分钟得到分散乳液；用10％的醋酸溶液调节pH＝4，搅拌30min后，冰水降温至5℃以下，加入与明胶等量的37％甲醛溶液，再继续搅拌30分钟，加入10％的氢氧化钠溶液调节pH值至9，继续搅拌2h，使溶液缓慢升至室温；最后进行抽滤，获得微胶囊。
3.如权利要求2所述的一种光固化耐久液晶热变色服装面料的制备方法，其特征在于：所述步骤(1)中液晶成分包括胆甾醇油烯基碳酸酯，胆固醇壬酸酯，氯化胆固醇，胆固醇丙酸酯，胆甾醇苯甲酸酯，胆固醇碳酸酯，丙烯酸胆甾醇酯，胆甾烯基对壬基苯基碳酸酯中的至少两种。
4.如权利要求1所述的一种光固化耐久液晶热变色服装面料的制备方法，其特征在于：所述步骤(2)中的涂层浆按质量百分比计算，其原料组分为：
液晶微胶囊 5-10%；
水性UV树脂 25-40%
水性光引发剂 1-7%
合成增稠剂PTF 0.5-2%
去离子水 41-68.5% 。
5.如权利要求4所述的一种光固化耐久液晶热变色服装面料的制备方法，其特征在于：所述的水性UV树脂为脂肪族聚氨酯丙烯酸酯水溶液、含水脂肪族聚氨酯丙烯酸酯、水溶性聚氨酯丙烯酸酯中的至少一种。
6.如权利要求4所述的一种光固化耐久液晶热变色服装面料的制备方法，其特征在于：所述的水性光引发剂为2-羟基-4’-(2-羟乙氧基)-2-甲基苯丙酮、水溶性二苯甲酮衍生物季铵盐、2-羟基-2-甲基-1-(4-甲基乙稀基-苯基)丙酮和双(2，4，6-三甲基苯甲酰基)苯基氧化磷中的至少一种。
7.如权利要求1所述的一种光固化耐久液晶热变色服装面料的制备方法，其特征在于：所述步骤(3)中的织物为棉、毛、麻、涤纶、黏胶或尼龙织物。
8.如权利要求1所述的一种光固化耐久液晶热变色服装面料的制备方法，其特征在于：所述步骤(3)中的紫外光固化使用高压汞灯，功率为1000W，汞灯与织物距离为2-4cm，固化时间为3-5min。
9.如权利要求1所述的一种光固化耐久液晶热变色服装面料的制备方法，其特征在于：所述步骤(3)中的烘干温度为50-70℃，时间5-8min。
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