CN112213920B - 一种水性环保型双固化毛毯胶及其制备方法 - Google Patents
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Abstract
本发明公开了一种水性环保型双固化毛毯胶的制备方法，包括：1)将适量的聚乙烯醇、水、醋酸乙烯和丙烯酸酯合成反应，得到胶体；2)依次加入适量的环氧丙烯树脂、UV单体和UV光敏剂，高速乳化成胶；3)加入适量重氮树脂光敏剂与上述胶体混合均匀得到的混合物。本发明还提供了根据上述方法制备得到的毛毯胶及其应用。本发明的毛毯胶同时存在重氮树脂光敏剂和UV光敏剂，感光过程中存在双固化反应，因此，固化速度较快且耐磨性较好，印刷可高达5万次。
Description
技术领域：
本发明涉及丝网印染技术领域，具体涉及是应用于毛毯业的印花技术，尤其涉及一种水性环保型双固化毛毯胶及其制备方法。
背景技术：
毛毯产业近年来得到了非常迅速的发展。我国目前已成为世界毛毯的生产基地，产量位居世界之首，许多毛毯都用于出口。当前毛毯印染行业多采用普通的醋酸乙烯耐水性感光胶。毛毯厚度较厚，印刷时所用丝网为60目左右，而磁力棒的压力有15Kg/m2造成感光胶不耐磨，一般印刷50-100次左右就脱胶，严重影响印花的效率。所以在印花过程中需借助在感光胶正反两面涂布软性慢干聚胺脂漆以保护感光膜，需要通过吸漆机分两次涂布才能完成制版工艺，制版时耗时长，同时由于慢干软性聚胺脂漆(沸点150℃)中含有有机溶剂，有机溶剂挥发也对周围环境造成不良影响。
发明内容：
本发明的目的就是针对传统工艺技术之不足，而提供一种水性环保型双固化毛毯胶的合成与制备，其有效的解决了毛毯印花耗时较长、制版牢度差且不耐磨的问题，同时解决软性慢干聚胺脂漆(沸点150℃)的有机溶剂挥发，达到安全环保的要求。该毛毯胶的使用采用了环氧丙烯酸合成胶体、UV单体和重氮树脂，制版时整个过程不需要使用慢干软性聚胺脂漆等，能够快速固化，制版柔软且耐磨。
本发明提供一种水性环保型双固化毛毯胶的制备方法，包括：
1)将适量的聚乙烯醇、水、醋酸乙烯和丙烯酸酯合成反应，得到胶体；
2)得到的胶体中依次加入适量的环氧丙烯树脂、UV单体和UV光敏剂，高速乳化成胶
3)将适量重氮树脂与上述胶体混合均匀；即得。
进一步地，步骤1)中，聚乙烯醇为50-100重量份、水为280-570重量份、醋酸乙烯为300-500重量份，丙烯酸酯为80-120重量份。
优选地，步骤1)得到的胶体的玻璃化温度为8-12℃。
进一步地，步骤2)中环氧丙烯树脂为80-120重量份，UV单体为80-120重量份，UV光敏剂为1重量份。
进一步地，所述UV单体选自二缩三丙二醇二丙烯酸酯(TPGDA)、二季戊四醇六丙烯酸酯(DPHA)、己二醇二丙烯酸酯(HDDA)、邻苯二甲酸二甘醇二丙烯烯酸酯(PDDA)、新戊二醇二丙烯酸酯(NPGDA)、季戊四醇三丙烯酸酯(PETA)、三羟甲基丙烷三丙烯酸酯(TMPTA)、乙氧基化三羟甲基丙烷三丙烯酸酯(EO-TMPTA)、甲基丙烯酸异冰片酯(IBOMA)或二丙二醇二丙烯酸酯(DPGDA)中的一种。
进一步地，步骤3)中加入的重氮树脂为5/1000重量份。
本发明还提供了根据上述的制备方法制备的水性环保双固化毛毯胶。
本发明进一步提供了上述的毛毯胶在毛毯印花中的应用
本发明的有益效果是：
1)毛毯胶上胶时较厚，本发明的毛毯胶合成中加入了丙烯酸酯，很好的改善了毛毯胶制版的硬度，使毛毯胶制版软硬度更佳，制的版可以在5℃以下环境中使用，版不裂不脆；
2)本发明的毛毯胶同时存在重氮树脂和UV光敏剂，感光过程中存在双固化反应，因此，固化速度较快且耐磨性较好，印刷可高达5万次；
3)使用现有技术的毛毯胶，在制版的过程中需借助软性慢干聚胺脂漆涂布在感光胶正反两面来保护感光膜，通过吸漆机分两次完成制版工艺，每次需要24h耗时较长，同时由于软性慢干聚胺脂漆(沸点150℃)的有机溶剂挥发气味较大影响环保。本发明提供的毛毯胶在使用过程中可以直接使用，不需要加保护剂。
具体实施方式：
下面对本发明的较佳实施例进行详细阐述，以使本发明的优点和特征能更易被本领域人员理解，从而对本发明的保护范围做出更为清楚明确的界定。
实施例1
在遮光条件下，在带有机械搅拌、温度计的2000ml三口圆底反应瓶中，依次加入50g聚乙烯醇、570g水、300g醋酸乙烯和100g丙烯酸丁酯合成胶体，随后加入100g环氧丙烯树脂、100g TPGDA和1g UV光敏剂、5g重氮树脂，高速乳化成胶。
实施例2
在遮光条件下，在带有机械搅拌、温度计的2000ml三口圆底反应瓶中，依次加入50g聚乙烯醇、570g水、300g醋酸乙烯和90g丙烯酸乙酯合成胶体，随后加入100g环氧丙烯树脂、100g TPGDA和1g UV光敏剂、5g重氮树脂，高速乳化成胶。
实施例3
在遮光条件下，在带有机械搅拌、温度计的2000ml三口圆底反应瓶中，依次加入50g聚乙烯醇、500g水、400g醋酸乙烯和100g丙烯酸丁酯合成胶体，随后加入100g环氧丙烯树脂、100g TPGDA和1g UV光敏剂、5g重氮树脂、，高速乳化成胶。
实施例4
在遮光条件下，在带有机械搅拌、温度计的2000ml三口圆底反应瓶中，依次加入50g聚乙烯醇、570g水、300g醋酸乙烯和100g丙烯酸丁酯合成胶体，随后加入5g重氮树脂、100g环氧丙烯树脂、130g TMPTA和1g UV光敏剂，高速乳化成胶。
实施例5
在遮光条件下，在带有机械搅拌、温度计的2000ml三口圆底反应瓶中，依次加入50g聚乙烯醇、570g水、300g醋酸乙烯和90g丙烯酸乙酯合成胶体，随后加入100g环氧丙烯树脂、80g HDDA和1g UV光敏剂、5g重氮树脂、，高速乳化成胶。
实施例6
使用实施例1-5中制得的毛毯胶制版60目丝网，得到毛毯胶网版。利用全自动耐磨试验机对网版进行耐磨性试验，摩擦压力设定为15N，耐磨次数高达5万次，其具体情况见下表。
表1耐磨实验数据表
| 产品 | 耐磨次数(次) |
| 普通产品 | 300 |
| 实施例1 | 47320 |
| 实施例2 | 46520 |
| 实施例3 | 49750 |
| 实施例4 | 50200 |
| 实施例5 | 42075 |
上述发明内容及具体实施方式意在证明本发明所提供技术方案的实际应用，不应解释为对本发明保护范围的限定。本领域技术人员在本发明的精神和原理内，当可作各种修改、等同替换、或改进。本发明的保护范围以所附权利要求书为准。
Claims (4)
1.一种水性环保型双固化毛毯胶的制备方法，其特征在于，包括：
1)将适量的聚乙烯醇、水、醋酸乙烯和丙烯酸酯合成反应，得到胶体；
2)再向步骤1)得到胶体中依次加入适量的环氧丙烯树脂、UV单体和UV光敏剂，高速乳化成胶；
3)再向步骤2)得到的混合物加入适量重氮树脂，混合均匀；
步骤1)中，聚乙烯醇为50-100重量份、水为280-570重量份、醋酸乙烯为300-500重量份，丙烯酸酯为80-120重量份在80℃进行合成反应得到胶体；步骤1)得到的胶体的玻璃化温度为8-12℃；
步骤3)中环氧丙烯树脂为80-120重量份，UV单体为80-120重量份，UV光敏剂为1重量份，重氮树脂为5重量份。
2.如权利要求1所述的制备方法，其特征在于，所述UV单体选自二缩三丙二醇二丙烯酸酯TPGDA、二季戊四醇六丙烯酸酯DPHA、己二醇二丙烯酸酯HDDA、邻苯二甲酸二甘醇二丙烯酸酯PDDA、新戊二醇二丙烯酸酯NPGDA、季戊四醇三丙烯酸酯PETA、三羟甲基丙烷三丙烯酸酯TMPTA、乙氧基化三羟甲基丙烷三丙烯酸酯EO-TMPTA、甲基丙烯酸异冰片酯IBOMA或二丙二醇二丙烯酸酯DPGDA中的一种。
3.一种根据权利要求1-2中任一项所述的制备方法制备的水性环保双固化毛毯胶。
4.如权利要求3所述的毛毯胶在毛毯印花中的应用。
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