CN107353839B - 一种强力双面胶带 - Google Patents

一种强力双面胶带 Download PDF

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CN107353839B
CN107353839B CN201710501178.8A CN201710501178A CN107353839B CN 107353839 B CN107353839 B CN 107353839B CN 201710501178 A CN201710501178 A CN 201710501178A CN 107353839 B CN107353839 B CN 107353839B
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王文朝
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Abstract

本发明公开了一种强力双面胶带，涉及双面胶带领域，将胶黏剂均匀涂抹到塑料薄膜基层两面而得，所述胶黏剂由纳米蒙脱土悬浮液、山药表面粘液、氯甲酸苄酯按10‑12:1‑2:0.1‑0.3质量比例混合后对聚氨酯预聚体进行高速分散制成；本发明制备的一种强力双面胶带，能够良好的耐水性，在潮湿环境或带水环境下可以长期使用，粘结性不会降低；稳定分散性好，无污染、无异味，对人体健康没有影响。

Description

一种强力双面胶带
技术领域
本发明属于双面胶带技术领域，具体涉及一种强力双面胶带。
背景技术
双面胶带是一种特殊的粘贴用品。双面胶带一般是以纸、布、塑料薄膜为基材，再把弹性体型压敏胶或树脂型压敏胶均匀涂布在上述基材上制成的卷状胶粘带。一般广泛用于皮革、铭板、文具、电子、汽车边饰 固定、鞋业、制纸、手工艺品粘贴定位等用途；还可以在贴纸、文具、办公等方面。但现有的胶带不能够防水，在高温或者潮湿的环境下，粘结性大大降低，不能够满足使用要求。
发明内容
本发明的目的是针对现有的问题，提供了一种强力双面胶带。
本发明是通过以下技术方案实现的：
一种强力双面胶带，将胶黏剂均匀涂抹到塑料薄膜基层两面而得，所述胶黏剂由纳米蒙脱土悬浮液、山药表面粘液、氯甲酸苄酯按10-12:1-2:0.1-0.3质量比例混合后对聚氨酯预聚体进行高速分散制成；
所述山药表面粘液制备方法为：将新鲜山药去皮后，切成片，按1:5-7质量比例与水均匀混合后，添加山药质量10%的乙醇，进行打浆，打浆30-35min，打浆速度为800r/min，然后过滤，得到滤液，回收滤液中的乙醇，然后向滤液中添加其质量0.12-0.15%的肉豆蔻酸，搅拌均匀后，静置2小时，然后浓缩至原体积的十分之一，即得。
进一步的，所述胶黏剂制备方法具体为：
（1）将原料聚酯多元醇、聚醚多元醇按1:6-8质量比例混合后，加热、真空脱水；
（2）在步骤(1)体系中加入聚酯多元醇质量0.2-0.3%的异氰酸酯，进行催化预聚反应；
（3）在预聚反应后，加入亲水扩链剂和助溶剂，继续反应制得聚氨酯预聚体；
（4）将纳米蒙脱土悬浮液、山药表面粘液、氯甲酸苄酯与步骤(2)制得的聚氨酯预聚体进行高速分散；
（5）在步骤（4）所得体系中加入二乙醇胺，其加入量聚氨酯预聚体质量的0.2%，加入后，以200r/min转速搅拌2小时后，静置1小时后，即得。
进一步的，所述步骤（1）中加热温度为100-110℃，真空度为0.3-0.5MPa。
进一步的，所述步骤（3）中亲水扩链剂是二羟甲基丙酸，其用量为聚氨酯预聚体总量的2.2-2.5%；所述助溶剂为对羟基苯甲酸甲酯，其用量为聚氨酯预聚体含量的0.3-0.4%；反应温度为 50-55℃，反应时间为2-3h。
进一步的，所述步骤（4）中纳米蒙脱土悬浮液制备方法为：将纳米蒙脱土按1：60-65质量比例与去离子水均匀混合后，制成悬浮液，添加纳米蒙脱土质量0.35%的氯化镧，加热至50℃，以500r/min转速搅拌1.5小时，然后静置30min，再添加纳米蒙脱土质量0.58%的双烷基季铵盐，以250r/min转速搅拌2小时，得到纳米蒙脱土悬浮液。
进一步的，所述步骤（4）中将纳米蒙脱土悬浮液、山药表面粘液、氯甲酸苄酯与步骤(2)制得的聚氨酯预聚体进行高速分散，纳米蒙脱土悬浮液与聚氨酯预聚体质量比例为3：16，高速分散速度为3000r/min。
本发明通过将纳米蒙脱土悬浮液、山药表面粘液、氯甲酸苄酯与聚氨酯预聚体进行高速分散制成胶黏剂，聚氨酯预聚体中含有-NH基和-NCO基，通过添加纳米蒙脱土悬浮液、山药表面粘液，-NCO基能够与纳米蒙脱土粒子有效的结合到一起，能够显著提高-NCO基的活性，提高了其对各种材料的粘结性，能够常温快速固化，通过在纳米蒙脱土悬浮液制备过程中添加一定量的稀土，能够使得纳米蒙脱土粒子表面附带一定量的稀土，在与纳米蒙脱土粒子结合后，形成的胶膜更加坚韧，耐冲击得到显著的提高、挠曲性好，剥离强度进一步的提高，同时具有很好的耐超低温性，耐油和耐磨性，通过添加山药表面粘液和氯甲酸苄酯的协同作用，能够在其固化时胶黏剂中的-NH基、-NCO基能够在强力吸附各种材料后，表层的亲水基能够在氯甲酸苄酯的作用下与山药表面粘液中的黏蛋白和甘露聚糖紧密结合到一起，形成牢固的三维网结构，极大的提高了其耐水性，避免了常规聚氨酯胶黏剂的耐水性不足的弊端。
本发明通过将纳米蒙脱土悬浮液、山药表面粘液、氯甲酸苄酯与聚氨酯预聚体制备的胶黏剂，能够与被粘材料表面之间快速润湿，能够在界面之间以最低能量快速结合，胶黏剂与被粘材料之间形成润湿状态，润湿程度高，形成紧密接触进而发生强力吸附，并且在粘接界面形成巨大的分子间作用，与此同时，山药表面粘液、纳米蒙脱土悬浮液还能够起到填充界面之间的孔隙，排除空气，从而降低被粘材料表面孔隙率，进一步提升粘结强度。
本发明相比现有技术具有以下优点：本发明制备的一种强力双面胶带，能够良好的耐水性，在潮湿环境或带水环境下可以长期使用，粘结性不会降低；稳定分散性好，无污染、无异味，对人体健康没有影响。
具体实施方式
实施例1
一种强力双面胶带，将胶黏剂均匀涂抹到塑料薄膜基层两面而得，所述胶黏剂由纳米蒙脱土悬浮液、山药表面粘液、氯甲酸苄酯按10:1:0.1质量比例混合后对聚氨酯预聚体进行高速分散制成；
所述山药表面粘液制备方法为：将新鲜山药去皮后，切成片，按1:5质量比例与水均匀混合后，添加山药质量10%的乙醇，进行打浆，打浆30min，打浆速度为800r/min，然后过滤，得到滤液，回收滤液中的乙醇，然后向滤液中添加其质量0.12%的肉豆蔻酸，搅拌均匀后，静置2小时，然后浓缩至原体积的十分之一，即得。
所述胶黏剂制备方法具体为：
（1）将原料聚酯多元醇、聚醚多元醇按1:6质量比例混合后，加热、真空脱水；
（2）在步骤(1)体系中加入聚酯多元醇质量0.2%的异氰酸酯，进行催化预聚反应；
（3）在预聚反应后，加入亲水扩链剂和助溶剂，继续反应制得聚氨酯预聚体；
（4）将纳米蒙脱土悬浮液、山药表面粘液、氯甲酸苄酯与步骤(2)制得的聚氨酯预聚体进行高速分散；
（5）在步骤（4）所得体系中加入二乙醇胺，其加入量聚氨酯预聚体质量的0.2%，加入后，以200r/min转速搅拌2小时后，静置1小时后，即得。
所述步骤（1）中加热温度为100℃，真空度为0.3MPa。
所述步骤（3）中亲水扩链剂是二羟甲基丙酸，其用量为聚氨酯预聚体总量的2.2%；所述助溶剂为对羟基苯甲酸甲酯，其用量为聚氨酯预聚体含量的0.3%；反应温度为 50℃，反应时间为2h。
所述步骤（4）中纳米蒙脱土悬浮液制备方法为：将纳米蒙脱土按1：60质量比例与去离子水均匀混合后，制成悬浮液，添加纳米蒙脱土质量0.35%的氯化镧，加热至50℃，以500r/min转速搅拌1.5小时，然后静置30min，再添加纳米蒙脱土质量0.58%的双烷基季铵盐，以250r/min转速搅拌2小时，得到纳米蒙脱土悬浮液。
所述步骤（4）中将纳米蒙脱土悬浮液、山药表面粘液、氯甲酸苄酯与步骤(2)制得的聚氨酯预聚体进行高速分散，纳米蒙脱土悬浮液与聚氨酯预聚体质量比例为3：16，高速分散速度为3000r/min。
实施例2
一种强力双面胶带，将胶黏剂均匀涂抹到塑料薄膜基层两面而得，所述胶黏剂由纳米蒙脱土悬浮液、山药表面粘液、氯甲酸苄酯按12: 2: 0.3质量比例混合后对聚氨酯预聚体进行高速分散制成；
所述山药表面粘液制备方法为：将新鲜山药去皮后，切成片，按1: 7质量比例与水均匀混合后，添加山药质量10%的乙醇，进行打浆，打浆35min，打浆速度为800r/min，然后过滤，得到滤液，回收滤液中的乙醇，然后向滤液中添加其质量0.15%的肉豆蔻酸，搅拌均匀后，静置2小时，然后浓缩至原体积的十分之一，即得。
所述胶黏剂制备方法具体为：
（1）将原料聚酯多元醇、聚醚多元醇按1: 8质量比例混合后，加热、真空脱水；
（2）在步骤(1)体系中加入聚酯多元醇质量0.3%的异氰酸酯，进行催化预聚反应；
（3）在预聚反应后，加入亲水扩链剂和助溶剂，继续反应制得聚氨酯预聚体；
（4）将纳米蒙脱土悬浮液、山药表面粘液、氯甲酸苄酯与步骤(2)制得的聚氨酯预聚体进行高速分散；
（5）在步骤（4）所得体系中加入二乙醇胺，其加入量聚氨酯预聚体质量的0.2%，加入后，以200r/min转速搅拌2小时后，静置1小时后，即得。
所述步骤（1）中加热温度为110℃，真空度为0.5MPa。
所述步骤（3）中亲水扩链剂是二羟甲基丙酸，其用量为聚氨酯预聚体总量的2.5%；所述助溶剂为对羟基苯甲酸甲酯，其用量为聚氨酯预聚体含量的0.4%；反应温度为55℃，反应时间为3h。
所述步骤（4）中纳米蒙脱土悬浮液制备方法为：将纳米蒙脱土按1： 65质量比例与去离子水均匀混合后，制成悬浮液，添加纳米蒙脱土质量0.35%的氯化镧，加热至50℃，以500r/min转速搅拌1.5小时，然后静置30min，再添加纳米蒙脱土质量0.58%的双烷基季铵盐，以250r/min转速搅拌2小时，得到纳米蒙脱土悬浮液。
所述步骤（4）中将纳米蒙脱土悬浮液、山药表面粘液、氯甲酸苄酯与步骤(2)制得的聚氨酯预聚体进行高速分散，纳米蒙脱土悬浮液与聚氨酯预聚体质量比例为3：16，高速分散速度为3000r/min。
实施例3
一种强力双面胶带，将胶黏剂均匀涂抹到塑料薄膜基层两面而得，所述胶黏剂由纳米蒙脱土悬浮液、山药表面粘液、氯甲酸苄酯按11:1:0.2质量比例混合后对聚氨酯预聚体进行高速分散制成；
所述山药表面粘液制备方法为：将新鲜山药去皮后，切成片，按1:6质量比例与水均匀混合后，添加山药质量10%的乙醇，进行打浆，打浆32min，打浆速度为800r/min，然后过滤，得到滤液，回收滤液中的乙醇，然后向滤液中添加其质量0.14%的肉豆蔻酸，搅拌均匀后，静置2小时，然后浓缩至原体积的十分之一，即得。
所述胶黏剂制备方法具体为：
（1）将原料聚酯多元醇、聚醚多元醇按1:7质量比例混合后，加热、真空脱水；
（2）在步骤(1)体系中加入聚酯多元醇质量0.2%的异氰酸酯，进行催化预聚反应；
（3）在预聚反应后，加入亲水扩链剂和助溶剂，继续反应制得聚氨酯预聚体；
（4）将纳米蒙脱土悬浮液、山药表面粘液、氯甲酸苄酯与步骤(2)制得的聚氨酯预聚体进行高速分散；
（5）在步骤（4）所得体系中加入二乙醇胺，其加入量聚氨酯预聚体质量的0.2%，加入后，以200r/min转速搅拌2小时后，静置1小时后，即得。
所述步骤（1）中加热温度为105℃，真空度为0.4MPa。
所述步骤（3）中亲水扩链剂是二羟甲基丙酸，其用量为聚氨酯预聚体总量的2.3%；所述助溶剂为对羟基苯甲酸甲酯，其用量为聚氨酯预聚体含量的0.4%；反应温度为 52℃，反应时间为2h。
所述步骤（4）中纳米蒙脱土悬浮液制备方法为：将纳米蒙脱土按1：62质量比例与去离子水均匀混合后，制成悬浮液，添加纳米蒙脱土质量0.35%的氯化镧，加热至50℃，以500r/min转速搅拌1.5小时，然后静置30min，再添加纳米蒙脱土质量0.58%的双烷基季铵盐，以250r/min转速搅拌2小时，得到纳米蒙脱土悬浮液。
所述步骤（4）中将纳米蒙脱土悬浮液、山药表面粘液、氯甲酸苄酯与步骤(2)制得的聚氨酯预聚体进行高速分散，纳米蒙脱土悬浮液与聚氨酯预聚体质量比例为3：16，高速分散速度为3000r/min。
对比例1：与实施例1区别仅在于步骤（4）中不添加山药表面粘液。
对比例2：与实施例1区别仅在于步骤（4）中不添加氯甲酸苄酯。
对比例3：与实施例1区别仅在于步骤（4）中纳米蒙脱土悬浮液制备中不添加氯化镧。
试验：
分别按实施例与对比例方法制备双面胶带，胶黏剂涂膜厚度为0.5μm，规格相同，将大小相同的塑料板条粘结到一起，2小时后，检测（按ASTM D3807-79）：
表1
胶合强度（MPa）
实施例1 1.75
实施例2 1.72
实施例3 1.73
对比例1 1.16
对比例2 1.23
对比例3 1.18
由表1可以看出，本发明制备的双面胶带粘结性能优越；
进一步试验，将上述粘结好的塑料板条放入60℃中水中水煮3小时，然后检测胶合强度：
表2
胶合强度（MPa）
实施例1 1.58
实施例2 1.52
实施例3 1.55
对比例1 0.56
对比例2 0.52
对比例3 0.89
由表2可以看出，本发明制备的双面胶带耐水性极佳，经过水煮后，胶合强度小幅度降低。

Claims (3)

1.一种强力双面胶带，其特征在于，将胶黏剂均匀涂抹到塑料薄膜基层两面而得，所述胶黏剂由纳米蒙脱土悬浮液、山药表面粘液、氯甲酸苄酯按10-12:1-2:0.1-0.3质量比例混合后对聚氨酯预聚体进行高速分散制成；
所述山药表面粘液制备方法为：将新鲜山药去皮后，切成片，按1:5-7质量比例与水均匀混合后，添加山药质量10%的乙醇，进行打浆，打浆30-35min，打浆速度为800r/min，然后过滤，得到滤液，回收滤液中的乙醇，然后向滤液中添加其质量0.12-0.15%的肉豆蔻酸，搅拌均匀后，静置2小时，然后浓缩至原体积的十分之一，即得；所述胶黏剂制备方法具体为：
（1）将原料聚酯多元醇、聚醚多元醇按1:6-8质量比例混合后，加热、真空脱水；
（2）在步骤(1)体系中加入聚酯多元醇质量0.2-0.3%的异氰酸酯，进行催化预聚反应；
（3）在预聚反应后，加入亲水扩链剂和助溶剂，继续反应制得聚氨酯预聚体；
（4）将纳米蒙脱土悬浮液、山药表面粘液、氯甲酸苄酯与步骤(3)制得的聚氨酯预聚体进行高速分散；
（5）在步骤（4）所得体系中加入二乙醇胺，其加入量聚氨酯预聚体质量的0.2%，加入后，以200r/min转速搅拌2小时后，静置1小时后，即得；所述步骤（4）中纳米蒙脱土悬浮液制备方法为：将纳米蒙脱土按1：60-65质量比例与去离子水均匀混合后，制成悬浮液，添加纳米蒙脱土质量0.35%的氯化镧，加热至50℃，以500r/min转速搅拌1.5小时，然后静置30min，再添加纳米蒙脱土质量0.58%的双烷基季铵盐，以250r/min转速搅拌2小时，得到纳米蒙脱土悬浮液。
2.根据权利要求1所述的一种强力双面胶带，其特征在于，所述步骤（3）中亲水扩链剂是二羟甲基丙酸，其用量为聚氨酯预聚体总量的2.2-2.5%；所述助溶剂为对羟基苯甲酸甲酯，其用量为聚氨酯预聚体含量的0.3-0.4%；反应温度为 50-55℃，反应时间为2-3h。
3.根据权利要求1所述的一种强力双面胶带，其特征在于，所述步骤（4）中将纳米蒙脱土悬浮液、山药表面粘液、氯甲酸苄酯与步骤(2)制得的聚氨酯预聚体进行高速分散，纳米蒙脱土悬浮液与聚氨酯预聚体质量比例为3：16，高速分散速度为3000r/min。
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