CN109575826B - 一种tpu基材易拉可移除双面胶带及其制备和使用方法 - Google Patents
一种tpu基材易拉可移除双面胶带及其制备和使用方法 Download PDFInfo
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Abstract
本发明公开了一种TPU基材易拉可移除双面胶带，其组份和质量份为：橡胶原料80‑150份，增黏树脂75‑130份，甲苯100‑350份，附着力促进剂0.1‑5份，色浆5‑15份。该TPU基材胶带是具有较高粘结强度的双面固定胶带，在使用时剥离离型纸或离型膜贴合后即能使用，在需要移除时，只需通过拉伸胶带即可移除，在电子元件的维修和维护时可以给工作人员带来极大的方便。
Description
技术领域
本发明属于双面粘合固定胶带领域，具体涉及一种TPU基材易拉可移除双面粘合固定胶带。
背景技术
双面胶带，是通过粘接的方式将不同的物体连接到一起的一种胶带产品，广泛应用于电子产品、印刷品、工艺品、金属、玻璃、玩具等材料的粘接固定，各种各样的双面胶带产品在不同行业发挥着不同的功效。随着智能手机、平板电脑等现代电子产品越来越普及，双面胶带在电子元器件等设备的固定中发挥着不可替代的作用。然而很多电子元器件在被胶带固定后存在难以拆卸的问题，当工作人员在产品组装过程中由于其他原因需要重工、产品加工过程中仅仅是用作临时固定、同时工作人员在处理产品售后维修或回收再利用需要再拆卸时，往往采用暴力强拆的方式，强拆后还需要再使用清洁剂或其他工具去除表面残胶，这样不仅容易损坏被粘物本体结构，而且表面残胶清洁也非常困难，费时费力且效果不好。可移除型双面压敏胶带具有较好的粘接性能，同时拉伸时又易于移除的特点，在粘接时与普通的双面压敏胶带无区别，施加压力即可实现不同物体的连接，而当需要对胶带移除时，只要握住胶带的一端保持与粘接界面水平并沿长度方向用力拉伸，胶带会发生严重屈服变形，使胶带能顺利地从被粘物界面间抽出移除，使用方便简洁，在电子元件的维修和维护时可以给工作人员带来极大的方便，因此双面固定易拉可移除胶带的开发具有重大的意义。
现有技术方案公布了一种无基材的易拉胶带，该方法生产工艺相对简单，但是拉伸强度较低（为6-9MPa），在使用过程中存在部分断裂不能完全移除的风险。另有技术采用在TPU薄膜两侧设置橡胶型胶水A和橡胶型胶水B的方式发明了一种总厚度在50-150 μm具有较高拉伸强度的有基材易拉胶带，该技术方案虽然可以在一定程度上提高了拉伸强度，减小了残胶的风险，但是胶带粘接强度不高。还有技术方案公布了一种以成膜树脂层为基材在成膜树脂层两侧设置第一护膜层、第一粘胶层以及第二护膜层、第二粘胶层的方式得到了总厚度范围在60-250 μm的易拉胶带，该方法虽然可以制得易拉可移除胶带，但是制备工艺步骤较多，除了存在胶水与成膜树脂之间附着力不够，胶带自身容易开裂风险外，所得的易拉胶带的粘接强度也较低，同时生产成本也相对较高。
发明内容
针对上述问题，本发明的目的在于克服现有技术中有基材易拉可移除胶带存在胶水与基材膜之间附着力不够、同时胶带本身粘接强度不高，使用时粘接不牢同时拉伸移除时容易出现部分断裂不能完全移除的缺陷。
提供一种制备工艺简单，成本低廉，使用便捷，具有较高的拉伸强度、粘合力、拉伸伸长率的TPU基材易拉可移除双面胶带，该TPU基材胶带是具有较高粘结强度的双面固定胶带，在使用时剥离离型纸或离型膜贴合后即能使用，在需要移除时，只需通过拉伸胶带，即可移除，使用方便简洁，在电子元件的维修和维护时可以给工作人员带来极大的方便。
为实现上述目的，本发明采用如下技术方案来实现。
一种TPU基材易拉可移除双面胶带，其组份和质量份为：橡胶原料80-150份，增黏树脂60-150份，甲苯100-330份，附着力促进剂0.1-5份，色浆5-15份。
所述的橡胶原料为丁苯橡胶或合成天然橡胶之一。
所述的增黏树脂为松香酯或萜烯树脂的至少一种，软化点为110-140℃，酸值为40-150，含有-OH结构。
进一步地，所述的增黏树脂中的几种为梧州荒川化学的GB125、GB138、赣州泰普化工T115。
所述的附着力促进剂为氨基硅烷，其具体为ADDID900或ADDID901。
所述的色浆为一任何颜色的丙烯酸酯类色浆，优选为白色浆或蓝色浆。
所述TPU基材易拉可移除胶带的制备步骤如下。
（1）橡胶型胶水的制备：按上述组份和质量份，在常温下，在容器内先将增黏树脂溶入甲苯中搅拌20min，搅拌均匀后再加入橡胶原料搅拌2-3h，待橡胶和增黏树脂搅拌均匀后再依次加入附着力促进剂和色浆，搅拌2-3h后制得橡胶型胶水。
（2）TPU基材胶带的制备：采用涂布的方式，将橡胶型胶水涂布于离型膜或离型纸上，干燥后贴合于TPU基材正反两侧，调节涂布干胶厚度和TPU基材厚度得到不同厚度的TPU基材易拉可移除胶带。
TPU基材易拉可移除胶带贴合时，只需将胶带两侧的离型纸或离型膜剥离后贴合到被粘物表面以实现对被粘物的粘接固定；TPU基材易拉可移除胶带移除时，通过与胶带呈0-70度拉伸胶带一端的方式即可移除。
与现有技术相比，本发明具有如下有益效果和优点。
1. 本发明所得到的TPU基材易拉可移除双面胶带为一种橡胶型胶水涂布于TPU基材上的双面压敏胶带，胶水与TPU基材不存在分离的问题：-OH结构和附着力促进剂氨基硅烷以及热塑性聚氨酯TPU基材之间除了自身相似相溶性较好，而且在分子层面可以通过氢键相互连接，使得胶水与TPU基材之间的连接更加牢固，保证了胶水与基材不易分离，同时采用软化点为110—140℃的增粘树脂对胶水的黏性具有提升作用，使得胶带具有较高的粘接强度。涂布成胶带后具有良好的粘接强度、拉伸伸长率和较高的拉伸强度，不易被拉断，在使用时能长久的固定材料，在需要移除时，可以通过拉伸的方式移除，为电子元器件的售后维修和其他需求带来了极大的方便。
2. 制备工艺简单易行，只需将胶水涂布到离型膜或者离型纸上烘干后贴合于TPU基材上即可得到胶带产品。
3. 使用方便简洁，无需预处理，只需揭去离型纸或离型膜进行贴合即可固定材料。
附图说明
图1是本发明一种TPU基材的易拉可移除双面胶带的结构示意图。图中，A为TPU基材，B为橡胶型胶水。
图2是本发明实施例3得到的TPU基材的双面胶带成品图（a）、检测过程图（b）、（c）及检测结果图(d)，对SUS钢板的剥离力为4200gf/inch左右。
具体实施方式
下面将列举本发明的技术方案实施例，所列举出的实施例仅是本发明的一部分实施例，基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
实例1。
制备该TPU易拉可移除胶带的橡胶型胶水包含下述重量份原料：丁苯橡胶150份，赣州泰普化工T115萜烯树脂130份，甲苯270份，附着力促进剂ADDID900 0.6份，色浆7份；用甲苯先溶解增粘树脂后，再依次加入丁苯橡胶、附着力促进剂、色浆，搅拌均匀后得到胶水；调节涂布厚度，将该胶水涂布于离型纸或离型膜上，烘干，贴合TPU基材后得到厚度为120 μm的TPU基材易拉可移除双面胶带。所得胶带在对SUS钢板测试过程中，剥离力达到4022 gf/inch时，胶带未见分离及残胶，体现了TPU基材与胶带极好的附着力。
TPU基材易拉可移除双面胶带使用时，只需将胶带两侧的离型纸或离型膜剥离后贴合到被粘物表面以实现对被粘物的粘接固定；胶带移除时，沿着胶带方向拉伸胶带一端即可移除。
实例2。
制备该TPU易拉可移除胶带的橡胶型胶水包含下述重量份原料：丁苯橡胶120份，荒川化学GB125松香树脂130份，甲苯300份，附着力促进剂ADDID901 4份，色浆8份；用甲苯先溶解增粘树脂后，再依次加入丁苯橡胶、附着力促进剂、色浆，搅拌均匀后得到胶水；调节涂布厚度，将该胶水涂布于离型纸或离型膜上，烘干，贴合TPU基材后得到厚度为150 μm的TPU基材易拉可移除双面胶带。所得胶带在对SUS钢板测试过程中，剥离力达到4114 gf/inch时，胶带未见分离及残胶，体现了TPU基材与胶带极好的附着力。
TPU基材易拉可移除双面胶带使用时，只需将胶带两侧的离型纸或离型膜剥离后贴合到被粘物表面以实现对被粘物的粘接固定；胶带移除时，沿着胶带方向拉伸胶带一端即可移除。
实例3。
制备该TPU易拉可移除胶带的橡胶型胶水包含下述重量份原料：合成天然橡胶100份，荒川化学GB125松香树脂120份，甲苯300份，附着力促进剂ADDID901 3份，色浆8份；用甲苯先溶解增粘树脂后，再依次加入天然合成橡胶、附着力促进剂、色浆，搅拌均匀后得到胶水；调节涂布厚度，将该胶水涂布于离型纸或离型膜上，烘干，贴合TPU基材后得到厚度为200 μm的TPU基材易拉可移除双面胶带。所得胶带在对SUS钢板测试过程中，剥离力达到4231 gf/inch时，胶带未见分离及残胶，体现了TPU基材与胶带极好的附着力。
TPU基材易拉可移除双面胶带使用时，只需将胶带两侧的离型纸或离型膜剥离后贴合到被粘物表面以实现对被粘物的粘接固定；胶带移除时，沿着胶带方向拉伸胶带一端即可移除。
实例4。
制备该TPU易拉可移除胶带的橡胶型胶水包含下述重量份原料：合成天然橡胶120份，荒川化学GB138松香树脂 120份，甲苯290份，附着力促进剂ADDID900 1份，色浆8份；用甲苯先溶解增粘树脂后，再依次加入天然合成橡胶、附着力促进剂、色浆，搅拌均匀后得到胶水；调节涂布厚度，将该橡胶型胶水涂布于离型纸或离型膜上，烘干，贴合TPU基材后得到厚度为220 μm的TPU基材易拉可移除双面胶带。所得胶带在对SUS钢板测试过程中，剥离力达到4310 gf/inch时，胶带未见分离及残胶，体现了TPU基材与胶带极好的附着力。
TPU基材易拉可移除双面胶带使用时，只需将胶带两侧的离型纸或离型膜剥离后贴合到被粘物表面以实现对被粘物的粘接固定；胶带移除时，沿着胶带方向拉伸胶带一端即可移除。
实例5。
制备该TPU易拉可移除胶带的橡胶型胶水包含下述重量份原料：丁苯橡胶120份，荒川化学GB138松香树脂120份，甲苯330份，附着力促进剂ADDID900 1份，色浆8份；调节涂布厚度，将该橡胶型胶水涂布于离型纸或离型膜上，烘干，贴合TPU基材后得到厚度为240 μm的TPU基材易拉可移除双面胶带。所得胶带在对SUS钢板测试过程中，剥离力达到4357 gf/inch时，胶带未见分离及残胶，体现了TPU基材与胶带极好的附着力。
TPU基材易拉可移除双面胶带使用时，只需将胶带两侧的离型纸或离型膜剥离后贴合到被粘物表面以实现对被粘物的粘接固定；胶带移除时，沿着胶带方向拉伸胶带一端即可移除。
将上述实施例中得到的TPU基材胶带测试对SUS钢板的180度剥离力。断裂强度测试时样条宽度宽度为15 mm、夹具间距为20 mm，拉伸速度为300 mm/min，记录断裂时的最大拉伸强度。结果如下表所示。
上述实例的结果汇总于表格中：
可见，本发明公开的技术方案与现有技术相比，具有粘合力皆大于4000 g/inch和拉伸强度皆大于16MPa的优点，同时胶带的厚度可调节。
Claims (4)
1.一种TPU基材易拉可移除双面胶带，其特征在于：所述双面胶带 包含TPU基材和干燥后贴合于TPU基材正反两侧的橡胶型胶水，所述橡胶型胶水的组份和质量份为：
橡胶原料80-150份；
增黏树脂75-130份；
甲苯100-350份；
附着力促进剂0.1-5份；
色浆5-15份；
所述的橡胶原料为丁苯橡胶或合成天然橡胶；
所述的增黏树脂为松香酯或萜烯树脂的至少一种，软化点为110-140℃，酸值为40-150，含有-OH结构；
所述的附着力促进剂为氨基硅烷。
2.根据权利要求1所述的一种TPU基材易拉可移除双面 胶带，其特征在于：所述的氨基硅烷附着力促进剂为ADDID900或ADDID901。
3.如权利要求1-2之一所述一种TPU基材易拉可移除双面 胶带的制备方法，其特征在于包含如下具体步骤：
（1）橡胶型胶水的制备：按照权利要求1-2之一所述的组份和质量份，在常温下，先将增黏树脂溶入甲苯中，搅拌均匀后再依次加入橡胶原料、附着力促进剂、色浆，搅拌均匀后制得橡胶型胶水；
（2）TPU基材胶带的制备：采用涂布的方式，将橡胶型胶水涂布于离型膜或离型纸上，干燥后贴合于TPU基材正反两侧上，得到TPU基材易拉可移除胶带。
4.如权利要求1-2之一所述一种TPU基材易拉可移除双面 胶带的使用方法，其特征在于：贴合时只需将胶带两侧的离型纸或离型膜剥离后贴合到被粘物表面以实现对被粘物的粘接固定；移除时，通过与胶带呈0-70度拉伸胶带一端的方式即可移除。
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