CN109971375B - 一种防水胶带基材和涂胶的方法 - Google Patents
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Abstract
本发明涉及医用胶带生产技术领域，具体涉及一种防水胶带基材和涂胶的方法。述防水胶带基材为双层结构，由防水层、基体层组成，本发明先得到透气性效果好的胶带基材；随后将胶带基材浸泡在Ti(SO4)2溶液中，负载二氧化钛在胶带基材中，不仅可以提高基材的抗菌性，还能保证后续的透气性，将负载二氧化钛的胶带基材表面进行等离子体处理，使基材表面形成大量反应基团，然后将双亲性聚合物溶液涂覆在其表面，亲水端会和基材表面进行结合，而疏水端在外面，制备得疏水膜。并且纳米二氧化钛颗粒的负载，高温加热后使形成的膜中形成均匀部分的孔径，该孔径保证防水性的同时还能具有优异的透气性。
Description
技术领域
本发明涉及医用胶带生产技术领域，具体涉及一种防水胶带基材和涂胶的方法。
背景技术
在外科手术后，用纱布包裹，其透气性好，但不具有防水性；后者大多采用具有透气孔的硅胶带，再在硅胶带的外面贴合一层防水透气膜，其优点是可以免去缝合的疼痛，具有防水性能，但其透气性能较差，这是由于一方面硅胶带的非孔区域仍占主要地位，整体上的透气性不足，另一方面，再贴合一层防水透气膜，不仅工序复杂，而且会在一定程度上阻碍透气性能，长期使用会影响伤口的愈合。同时现有的防水布料具有高防水性时，无法兼具透气度及抗污性，因此现有的防水透气兼具的医用胶带仍具有改善的必要。
发明内容
为了解决上述技术问题，本发明提供了一种防水胶带基材和涂胶的方法，使制得的胶带具有防水、透气及抗污性的功效。
为了解决上述技术问题，本发明采用的技术方案为：
所述防水胶带基材为双层结构，由防水层、基体层组成；
所述防水胶带基材的具体制备步骤为：
(1)将甲基丙烯酰胺、甲基丙烯酸十八酯、丙二醇甲醚醋酸酯混合后溶解于异丙醇中，加入引发剂，在氮气保护在升温至80℃进行反应，反应3～5h后停止搅拌加热，将反应得到的溶液用减压蒸馏去除溶剂，得聚合物溶液，然后加水，混合后置于超声波振荡器震荡腔内震荡，备用；
(2)将基材浸泡在0.3mol/L的Ti(SO4)2溶液中，用碱液调节pH为8，浸泡3～5h，浸泡后取出基材，并干燥；
(3)将干燥后的基材表面进行低温等离子体处理，处理时间为5～15s，处理功率为150～250W，得预处理后的基材；
(4)将预处理后的基材表面涂覆步骤(1)制备的聚合溶液，涂覆后置于烘箱中，置于真空干燥箱中，在80℃下干燥，干燥后得双层结构的防水胶带基材。
进一步，所述基体层是由棉纤维、麻纤维、腈纶纤维、涤纶纤维混纺编织而成。
进一步，所述甲基丙烯酰胺、甲基丙烯酸十八酯、丙二醇甲醚醋酸酯的摩尔比为1:1.2:1。
进一步所述步骤(4)所述的涂覆量为0.3～0.6g/cm2。
所述涂胶步骤为：
(1)称取马铃薯淀粉，加入水中，搅拌混合均匀后加热至70～80℃进行糊化得混合物A，将透明质酸溶于MES酸性缓冲溶液中，不断搅拌使其完全溶解，然后加入乳化剂和过硫酸铵，得混合物B，继续升温至90～95℃，搅拌混合后向混合物A中分批加入混合物B和混合单体，将混合单体和混合物B滴加完毕后，进行搅拌反应，反应1～2h后降温，得液态胶；
(2)将液体胶按0.3～0.5g涂覆量涂覆在基体表面，涂覆后干燥，得防水胶带。
进一步，所述混合物B、混合单体和混合物A的质量比为1:1：5～10。
进一步，所述乳化剂为十二烷基磺酸钠；所述混合单体是由丙烯酸甲酯、丙烯酸乙酯和衣康酸混合而成。
与现有技术相比，本发明的有益效果为：
本发明基体层是由棉纤维、麻纤维、腈纶纤维、涤纶纤维混纺编织而成，可根据客户的需要进行调节，得到透气性效果好的胶带基材；随后将胶带基材浸泡在Ti(SO4)2溶液中，水解后形成二氧化钛负载在胶带基材中，不仅可以提高基材的抗菌性，还能保证后续的透气性。接着在负载二氧化钛的胶带基材表面进行等离子体处理，使得基材表面形成大量羟基等反应基团，然后将制备得到的聚合物溶液涂覆在其表面，由于聚合物溶液呈双亲性，亲水端会和基材表面进行结合，而疏水端在外面。从而使最终疏水防水膜。并且由于纳米二氧化钛颗粒的负载，高温加热后使形成的膜中形成均匀部分的孔径，该孔径保证防水性的同时还能具有优异的透气性。
具体实施方式
实施例1
(1)按摩尔比为1:1.2:1称取甲基丙烯酰胺、甲基丙烯酸十八酯、丙二醇甲醚醋酸酯混合后溶解于异丙醇中，加入引发剂，在氮气保护在升温至80℃进行反应，反应3h后停止搅拌加热，将反应得到的溶液用减压蒸馏去除溶剂，得聚合物溶液，然后加水，混合后置于超声波振荡器震荡腔内震荡，备用；
(2)基体层是由棉纤维、麻纤维、腈纶纤维、涤纶纤维混纺编织而成，将基材浸泡在0.3mol/L的Ti(SO4)2溶液中，用碱液调节pH为8，浸泡5h，浸泡后取出基材，并干燥；
(3)将干燥后的基材表面进行低温等离子体处理，处理时间为15s，处理功率为250W，得预处理后的基材；
(4)将预处理后的基材表面涂覆步骤(1)制备的聚合溶液，涂覆量为0.6g/cm2，涂覆后置于烘箱中，置于真空干燥箱中，在80℃下干燥，干燥后得双层结构的防水胶带基材。
(5)称取马铃薯淀粉，加入水中，搅拌混合均匀后加热至80℃进行糊化得混合物A，将透明质酸溶于MES酸性缓冲溶液中，不断搅拌使其完全溶解，然后加入十二烷基磺酸钠和过硫酸铵，得混合物B，继续升温至95℃，搅拌混合后向混合物A中分批加入混合物B和混合单体(由丙烯酸甲酯、丙烯酸乙酯和衣康酸混合而成)，混合物B、混合单体和混合物A的质量比为1:1：10，将混合单体和混合物B滴加完毕后，进行搅拌反应，反应2h后降温，得液态胶；
(6)将液体胶按0.5g涂覆量涂覆在基体表面，涂覆后干燥，得防水胶带。
实施例2
(1)按摩尔比为1:1.2:1称取甲基丙烯酰胺、甲基丙烯酸十八酯、丙二醇甲醚醋酸酯混合后溶解于异丙醇中，加入引发剂，在氮气保护在升温至80℃进行反应，反应5h后停止搅拌加热，将反应得到的溶液用减压蒸馏去除溶剂，得聚合物溶液，然后加水，混合后置于超声波振荡器震荡腔内震荡，备用；
(2)基体层是由棉纤维、麻纤维、腈纶纤维、涤纶纤维混纺编织而成，将基材浸泡在0.3mol/L的Ti(SO4)2溶液中，用碱液调节pH为8，浸泡3h，浸泡后取出基材，并干燥；
(3)将干燥后的基材表面进行低温等离子体处理，处理时间为5s，处理功率为150W，得预处理后的基材；
(4)将预处理后的基材表面涂覆步骤(1)制备的聚合溶液，涂覆量为0.3～0.6g/cm2，涂覆后置于烘箱中，置于真空干燥箱中，在80℃下干燥，干燥后得双层结构的防水胶带基材。
(5)称取马铃薯淀粉，加入水中，搅拌混合均匀后加热至70℃进行糊化得混合物A，将透明质酸溶于MES酸性缓冲溶液中，不断搅拌使其完全溶解，然后加入十二烷基磺酸钠和过硫酸铵，得混合物B，继续升温至90℃，搅拌混合后向混合物A中分批加入混合物B和混合单体(由丙烯酸甲酯、丙烯酸乙酯和衣康酸混合而成)，混合物B、混合单体和混合物A的质量比为1:1：5，将混合单体和混合物B滴加完毕后，进行搅拌反应，反应1h后降温，得液态胶；
(6)将液体胶按0.3g涂覆量涂覆在基体表面，涂覆后干燥，得防水胶带。
实施例3
(1)按摩尔比为1:1.2:1称取甲基丙烯酰胺、甲基丙烯酸十八酯、丙二醇甲醚醋酸酯混合后溶解于异丙醇中，加入引发剂，在氮气保护在升温至80℃进行反应，反应4h后停止搅拌加热，将反应得到的溶液用减压蒸馏去除溶剂，得聚合物溶液，然后加水，混合后置于超声波振荡器震荡腔内震荡，备用；
(2)基体层是由棉纤维、麻纤维、腈纶纤维、涤纶纤维混纺编织而成，将基材浸泡在0.3mol/L的Ti(SO4)2溶液中，用碱液调节pH为8，浸泡4h，浸泡后取出基材，并干燥；
(3)将干燥后的基材表面进行低温等离子体处理，处理时间为10s，处理功率为200W，得预处理后的基材；
(4)将预处理后的基材表面涂覆步骤(1)制备的聚合溶液，涂覆量为0.4g/cm2，涂覆后置于烘箱中，置于真空干燥箱中，在80℃下干燥，干燥后得双层结构的防水胶带基材。
(5)称取马铃薯淀粉，加入水中，搅拌混合均匀后加热至75℃进行糊化得混合物A，将透明质酸溶于MES酸性缓冲溶液中，不断搅拌使其完全溶解，然后加入十二烷基磺酸钠和过硫酸铵，得混合物B，继续升温至93℃，搅拌混合后向混合物A中分批加入混合物B和混合单体(由丙烯酸甲酯、丙烯酸乙酯和衣康酸混合而成)，混合物B、混合单体和混合物A的质量比为1:1：7，将混合单体和混合物B滴加完毕后，进行搅拌反应，反应1.5h后降温，得液态胶；
(6)将液体胶按0.4g涂覆量涂覆在基体表面，涂覆后干燥，得防水胶带。
对比例1
对比例1与实施例1相比，主要区别在于：未将基材浸泡在Ti(SO4)2溶液中，其余制备步骤与实施例1相同。
对比例2
对比例2与实施例1相比，主要区别在于：未将基材表面进行低温等离子体处理，其余制备步骤与实施例1相同。
对比例3
对比例3与实施例1相比，主要区别在于：未在基材表面涂覆一层聚合物溶液，其余制备步骤与实施例1相同。
将上述实施例进行性能检测，检测结果如表1所示
表1：
Claims (5)
1.一种防水胶带基材，其特征在于：所述防水胶带基材由防水层、基体层双层结构组成；
所述防水胶带基材的具体制备步骤为：
（1）将甲基丙烯酰胺、甲基丙烯酸十八酯、丙二醇甲醚醋酸酯混合后溶解于异丙醇中，加入引发剂，在氮气保护在升温至80℃进行反应，反应3~5h后停止搅拌加热，将反应得到的溶液减压蒸馏去除溶剂，得聚合物溶液，然后加水，混合后置于超声波振荡器震荡腔内震荡，得双亲型聚合物溶液，备用；
（2）将基材浸泡在0.3mol/L 的Ti（SO4)2溶液中，用碱液调节pH为8，浸泡3~5h，浸泡后取出基材，并干燥；
所述基材是由棉纤维、麻纤维、腈纶纤维、涤纶纤维混纺编织而成；
（3）将干燥后的基材表面进行低温等离子体处理，处理时间为5~15s，处理功率为150~250W，得预处理后的基材；
（4）将预处理后的基材表面涂覆步骤（1）制备的得双亲型聚合物溶液，涂覆后置于烘箱中，置于真空干燥箱中，在80℃下干燥，干燥后得双层结构的防水胶带基材；
防水胶带基材的涂胶方法：称取马铃薯淀粉，加入水中，搅拌混合均匀后加热至70~80℃进行糊化得混合物A，将透明质酸溶于MES酸性缓冲溶液中，不断搅拌使其完全溶解，然后加入乳化剂和过硫酸铵，得混合物B，继续升温至90~95℃，搅拌混合后向混合物A中分批加入混合物B和混合单体，将混合单体和混合物B滴加完毕后，进行搅拌反应，反应1~2h后降温，得液态胶；
将液体胶按0.3~0.5g/cm2涂覆量涂覆在基体表面，涂覆后干燥，得防水胶带。
2.根据权利要求1所述防水胶带基材，其特征在于：所述甲基丙烯酰胺、甲基丙烯酸十八酯、丙二醇甲醚醋酸酯的摩尔比为1:1.2:1。
3.根据权利要求1所述防水胶带基材，其特征在于：所述步骤（4）所述的涂覆量为0.3~0.6g/cm2。
4.根据权利要求1所述的防水胶带基材，其特征在于：所述混合物B、混合单体和混合物A的质量比为1:1：5~10。
5.根据权利要求1所述的防水胶带基材，其特征在于：所述乳化剂为十二烷基磺酸钠；所述混合单体是由丙烯酸甲酯、丙烯酸乙酯和衣康酸混合而成。
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