溶剂型耐高温丙烯酸酯类压敏胶的研制与性能优化毕业论文
2021-12-28 21:08:45
论文总字数:14874字
摘 要
压敏胶在胶粘剂中占有非常重要的地位,这是因为压敏胶又叫做不干胶,并且还具有干粘性和持久粘性的优点,并且无色无味,对纤维有一定的粘结强度,热稳定性好,应用范围广。经过最近几十年科技的发展,压敏胶的适用范围和需求量不断增大,现有的压敏胶已经无法满足我们的需求了,因此公司企业正在研发改进现有的压敏胶,根据需求的不同,赋予压敏胶特定的性能。
为了满足工业生产需要,本课题拟设计出一种耐高温的溶剂型丙烯酸压敏胶,其中包括引入第二功能性单体对其改性,添加封闭型固化剂进行固化。探究软硬单体比例,第二功能性单体的含量,固化剂用量对压敏胶耐高温以及综合性能的影响。最终发现当软硬单体比例为6:1,HEMA质量分数为3%,压敏胶稀释至20%固含量封闭型固化剂的加入量为1.0%时,压敏胶的耐高温和综合性能最好。
关键词:压敏胶 丙烯酸酯 耐高温 固化
Preparation and curing of fat-soluble acrylate pressure sensitive adhesive
Abstract
Pressure sensitive adhesive in the adhesive occupies a very important position, this is because pressure sensitive adhesive is also called adhesive, and also has the advantages of dry viscosity and lasting viscosity, and colorless and tasteless, fiber has a certain bond strength, good thermal stability, wide range of applications. With the development of science and technology in recent decades, the application range and demand of pressure-sensitive adhesive have been increasing, and the existing pressure-sensitive adhesive has been unable to meet our demand. Therefore, the company is developing and improving the existing pressure-sensitive adhesive and endowing pressure-sensitive adhesive with specific properties according to different demands.
In order to meet the needs of industrial production, this project plans to design a high temperature resistant solvent acrylic acid pressure sensitive adhesive, including the introduction of a second functional monomer to modify it, adding a sealing curing agent for curing. The effect of the amount of hard and soft monomers, the second functional and the amount of closed curing agent on the performance of the pressure-sensitive adhesive was studied. It was finally found that when the ratio of soft and hard monomers is 6: 1, When the mass fraction of HEMA was 3%, and the content of the pressure-sensitive adhesive was diluted to 20% and the amount of the sealing agent was 1.0%, the pressure-sensitive adhesive had the best high-temperature resistance and comprehensive performance.
Key words:Pressure sensitive adhesive; Acrylate; High temperature resistance; Curing
目录
摘要 I
Abstract II
第一章 前言 1
1.1选课的背景及意义: 1
1.2 丙烯酸酯压敏胶综合概论 1
1.2.1丙烯酸酯压敏胶的组成 1
1.2.2 丙烯酸酯压敏胶的种类 2
1.2.3 丙烯酸酯压敏胶的制备工艺 2
1.3 现在丙烯酸酯压敏胶的研究进展 3
1.4 未来丙烯酸酯类压敏胶的发展展望 3
1.4.1 医用领域 4
1.4.2 电子产品领域 4
1.4.3 航空领域 5
1.4.4 压敏胶带领域 5
1.5 本课题的研究内容 5
第二章 实验部分 6
2.1实验设计 6
2.1.1 实验流程设计 6
2.1.2 聚合工艺的选择 6
2.1.3 引发剂的选择 7
2.1.4 溶剂的选择 7
2.1.5 单体的选择 7
2.2 丙烯酸酯压敏胶的制备实验 9
2.2.1 主要原料试剂 9
2.2.2 实验设备仪器 9
2.2.3 制备步骤 9
2.3 压敏胶带的制备 10
2.4 压敏胶的固化时间测定 10
2.5 压敏胶带的性能测试 10
2.5.1 初粘力测试 10
2.5.2 持粘性测试 11
2.5.3 180°剥离强度测试 11
2.5.4 耐高温性能测试 12
第三章 结果与讨论 12
3.1 软硬单体用量对压敏胶性能的影响 12
3.2 AA用量对APSA性能的影响 13
3.3 HEMA含量和固化剂用量对压敏胶固化时间的影响 14
3.4 封闭型固化剂的用量对压敏胶带性能的影响 15
3.5 温度对压敏胶带性能的影响 16
第四章 结论与展望 16
4.1 结论 16
4.2 展望 17
参考文献 18
致谢 20
第一章 前言
1.1选课的背景及意义:
压敏胶是一种仅需轻轻按一下就能将物体很好地粘合在一起的胶粘剂。丙烯酸酯压敏胶(APSA)作为现在最常用的压敏胶,它的用量已经达到所有压敏胶用量的一半以上。 APSA主要由丙烯酸酯和含乙烯基的其他单体组成,是具有液体和固体性质的粘弹性材料,具有良好的耐热性,没有相转移,具有良好的透明性,对皮肤无损伤,在医疗和工业领域应用广泛[1]。
丙烯酸酯压敏胶粘剂应用广泛因为其优异的粘合性能,不易分解,毒性小和低廉的成本。交联型丙烯酸酯压敏胶只能在150℃下短时间使用。所以这会让压敏胶的使用范围减小[2]。虽然在保护环境,节约资源,能源和安全等方面依旧存在许多问题,但它仍在市场中占有很大比例,并广泛用于标签,包装胶带,双面胶带和医用胶带[4]。
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