CN106520023A - 一种高附着抗冲击中空玻璃用热熔丁基密封胶及其制备方法 - Google Patents
一种高附着抗冲击中空玻璃用热熔丁基密封胶及其制备方法 Download PDFInfo
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Abstract
本发明公开了一种高附着抗冲击中空玻璃用热熔丁基密封胶，其是由下述重量份的原料制得：丁基橡胶10‑20，聚异丁烯30‑40，聚乙烯醇缩丁醛2‑4，二元乙丙橡胶5‑10，硅烷偶联剂A‑151 0.5‑1，醋酸丁酸纤维素0.5‑1，糠醇树脂5‑10，甲基丙烯酸环氧丙酯0.3‑0.5，邻苯二甲酸二丁酯3‑5，重质碳酸钙10‑15，硅藻土5‑10，石膏晶须0.5‑1。本发明的中空玻璃用热熔丁基密封胶兼具优良的抗形变性能和高强度、高粘结性能，并且韧性高、抗冲击性能强，对玻璃的粘接、附着性能好，综合性能好，实用性强。
Description
技术领域
本发明涉及密封胶技术领域，尤其涉及一种高附着抗冲击中空玻璃用热熔丁基密封胶及其制备方法。
背景技术
中空玻璃集绝热、隔音、采光等优良特性于一体，是一种高效的节能产品，在玻璃幕墙、汽车、交通、飞机等方面都得到广泛的应用。随着中空玻璃大量进入新型建筑领域，人们对中空玻璃的质量要求也越来越高。密封寿命长的中空玻璃不仅能带来好的经济效益，还具有更强的市场竞争力。丁基密封胶具有其极低的水汽透过率和良好的密封效果，被用作第一道中空玻璃密封剂，对中空玻璃制品的综合质量性能起到关键作用。
丁基橡胶具有蠕变性，赋予丁基密封胶柔韧性、初粘性和抗冲击性，但是容易导致冷流，发生形变，影响丁基密封胶的使用效果。CN201010283780公开了一种中空玻璃用热熔丁基密封胶，改善了丁基密封胶的高温冷流现象，使其能够长期使用而不变形。然而，该产品具有粘接性能不足的缺陷，且无法提高丁基密封胶的强度及综合性能，在实际应用中仍需改进。
发明内容
本发明目的就是为了弥补已有技术的缺陷，提供一种兼具优良抗形变性能和高强度、高粘结性能的的高附着抗冲击中空玻璃用热熔丁基密封胶及其制备方法。
本发明是通过以下技术方案实现的：
一种高附着抗冲击中空玻璃用热熔丁基密封胶，其是由下述重量份的原料制得：
丁基橡胶10-20，聚异丁烯30-40，聚乙烯醇缩丁醛2-4，二元乙丙橡胶5-10，硅烷偶联剂A-151 0.5-1，醋酸丁酸纤维素0.5-1，糠醇树脂5-10，甲基丙烯酸环氧丙酯0.3-0.5，邻苯二甲酸二丁酯3-5，重质碳酸钙10-15，硅藻土5-10，石膏晶须0.5-1。
一种高附着抗冲击中空玻璃用热熔丁基密封胶的制备方法，包括以下步骤：
（1）按重量称取原料，先将糠醇树脂、聚乙烯醇缩丁醛、醋酸丁酸纤维素、甲基丙烯酸环氧丙酯和邻苯二甲酸二丁酯于80-90℃混合0.5-1h，然后加入硅烷偶联剂A-151于100-120℃搅拌10-15min，冷却后得改性糠醇树脂胶粘剂；
（2）先将丁基橡胶、聚异丁烯和二元乙丙橡胶高速共混均匀后与步骤（1）中得到的改性糠醇树脂胶粘剂共同投入捏合机内于80-90℃预热15-30min，然后将温度升至100-120℃捏合1-2h，再加入其余原料继续捏合1-2h，然后开始抽真空，当真空度达到0.08-0.09Mpa后继续捏合2-4h，挤出、冷却成型得到高附着抗冲击中空玻璃用热熔丁基密封胶。
本发明的优点是：
本发明将糠醇树脂、聚乙烯醇缩丁醛、醋酸丁酸纤维素、甲基丙烯酸环氧丙酯和邻苯二甲酸二丁酯进行共混，并利用硅烷偶联剂A-151进行改性，得到的改性糠醇树脂胶粘剂与丁基橡胶、聚异丁烯、二元乙丙橡胶复配而成的密封胶基料具有良好的兼容性，既能有效改善体系的稳定性，避免产生冷流现象，又能提高密封胶的粘接性能和强度。同时，通过其余原料的选择与复配，使得到的中空玻璃用热熔丁基密封胶兼具优良的抗形变性能和高强度、高粘结性能，并且韧性高、抗冲击性能强，对玻璃的粘接、附着性能好，综合性能好，实用性强。
具体实施方式
一种高附着抗冲击中空玻璃用热熔丁基密封胶，由下列重量(kg)的组分原料制备而成：
丁基橡胶10，聚异丁烯30，聚乙烯醇缩丁醛2，二元乙丙橡胶5，硅烷偶联剂A-151 0.5，醋酸丁酸纤维素0.5，糠醇树脂5，甲基丙烯酸环氧丙酯0.3，邻苯二甲酸二丁酯3，重质碳酸钙10，硅藻土5，石膏晶须0.5。
一种高附着抗冲击中空玻璃用热熔丁基密封胶的制备方法，包括以下步骤：
（1）按重量称取原料，先将糠醇树脂、聚乙烯醇缩丁醛、醋酸丁酸纤维素、甲基丙烯酸环氧丙酯和邻苯二甲酸二丁酯于80℃混合0.5h，然后加入硅烷偶联剂A-151于100℃搅拌10min，冷却后得改性糠醇树脂胶粘剂；
（2）先将丁基橡胶、聚异丁烯和二元乙丙橡胶高速共混均匀后与步骤（1）中得到的改性糠醇树脂胶粘剂共同投入捏合机内于80℃预热15min，然后将温度升至100℃捏合1h，再加入其余原料继续捏合1h，然后开始抽真空，当真空度达到0.08Mpa后继续捏合2h，挤出、冷却成型得到高附着抗冲击中空玻璃用热熔丁基密封胶。
上述制得的密封胶性能测试结果如下：
密度（g/cm3）：1.26；
剪切强度（MPa）：0.31；
水蒸气透过率（24h，1.8mm）/（g/cm2）：0.09；
紫外线照射发雾性：无雾；
冷流性接近于零。
Claims (2)
1.一种高附着抗冲击中空玻璃用热熔丁基密封胶，其特征在于，其是由下述重量份的原料制得：
丁基橡胶10-20，聚异丁烯30-40，聚乙烯醇缩丁醛2-4，二元乙丙橡胶5-10，硅烷偶联剂A-151 0.5-1，醋酸丁酸纤维素0.5-1，糠醇树脂5-10，甲基丙烯酸环氧丙酯0.3-0.5，邻苯二甲酸二丁酯3-5，重质碳酸钙10-15，硅藻土5-10，石膏晶须0.5-1。
2.根据权利要求1所述的一种高附着抗冲击中空玻璃用热熔丁基密封胶的制备方法，其特征在于，包括以下步骤：
（1）按重量称取原料，先将糠醇树脂、聚乙烯醇缩丁醛、醋酸丁酸纤维素、甲基丙烯酸环氧丙酯和邻苯二甲酸二丁酯于80-90℃混合0.5-1h，然后加入硅烷偶联剂A-151于100-120℃搅拌10-15min，冷却后得改性糠醇树脂胶粘剂；
（2）先将丁基橡胶、聚异丁烯和二元乙丙橡胶高速共混均匀后与步骤（1）中得到的改性糠醇树脂胶粘剂共同投入捏合机内于80-90℃预热15-30min，然后将温度升至100-120℃捏合1-2h，再加入其余原料继续捏合1-2h，然后开始抽真空，当真空度达到0.08-0.09Mpa后继续捏合2-4h，挤出、冷却成型得到高附着抗冲击中空玻璃用热熔丁基密封胶。
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107201196A (zh) * | 2017-06-15 | 2017-09-26 | 湖北新海鸿化工有限公司 | 一种中空玻璃用丁基橡胶密封胶及其制备方法 |
| CN109401086A (zh) * | 2018-09-10 | 2019-03-01 | 天长市永泰密封材料有限公司 | 一种强效减震丁基密封胶 |
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