聚氨酯型紫外光固化涂料合成工艺及应用研究

材料科学论文编号:CL056  论文字数:13083,页数:29

目  录
中文摘要 I
英文摘要 II
目录 III
1. 绪论 1
 1.1  紫外光固化涂料的研究进展 1
 1.1.1 紫外光固化涂料的组成 2
 1.2  聚氨酯型光固涂料 4
 1.2.1 聚氨酯型丙烯酸酯的特点 5
 1.2.2 有机硅改性聚氨酯的特点 5
 1.2.3 环氧树脂改性聚氨酯的特点 5
 1.2.4 氨酯型光固涂料的合成方法和路线 5
 1.3 紫外光固化涂料在塑料制品中的应用 7
 1.4 主要研究内容 9
 2  实验部分 10
 2.1 主要原材料及仪器 10
 2.1.1  原材料 10
 2.1.2 主要仪器 10
 2.2 实验步骤 11
 2.2.1  丙烯酸酯化聚氨酯预聚体制备 11
 2.2.2  多元醇改性丙烯酸酯化聚氨酯预聚体制备 11
 2.2.3  有机硅烷改性丙烯酸酯化聚氨酯预聚体制备 12
 2.2.4 游离-NCO的测定 12
 2.2.5  ABS用紫外光固涂料制备 13
 
3. 结果与讨论 15
 3.1丙烯酸酯化聚氨酯预聚体   15
 3.2 多元醇改性丙烯酸酯化聚氨酯预聚体 16
 3.3有机硅烷改性丙烯酸酯化聚氨酯预聚体 19
 3.4  多元醇改性丙烯酸酯化聚氨酯预聚体中试 21
 3.5  涂料配制 21
4．总结与展望 22
致谢 24
参考文献 25

摘 要： 紫外光固化（UV）是目前涂装领域中最快的固化方式之一，经过UV固化后的涂膜具有很高的抗化学腐蚀性，优良的物理性能和光泽。本文主要以丙烯酸酯合成改性聚氨酯，所得产物再进行多元醇和有机硅烷的改性。测试结果表明：硅烷偶联剂成功接枝在聚氨酯丙烯酸酯预聚体上，产物的表干时间、粘接强度、耐热耐水性得到较大改善。
 本文以异佛尔酮二异氰酸酯和丙烯酸羟乙酯为原料，经反应先制得改性丙烯酸羟异佛尔酮二异氰酸酯，而后分别与低分子量聚醚及氨基有机硅烷反应制得聚醚低聚体和硅烷改性低聚体，以此预聚体为主原料，再和双酚A型丙烯酸环氧酯、光敏剂等复合制得一种新型涂料。该涂料用于玻璃涂覆固化后涂膜硬度≥H，附着力0级， 耐磨性RCA 175g≥300次，涂膜外观平整光滑，柔韧性1mm，光泽度≥90，综合性能优良。 
关键词：紫外光固化；聚氨酯；有机硅改性；预聚体；合成

Abstract: ： Ultraviolet curing is one of the fastest curing methods in the coating industry, films cured by UV radiation has the properties of high chemical resistance ，excellent physical strength and very good gloss．In this paper, the synthesis of modified polyurethane acrylates are the products of organic silicon polyol modified. Test results show that: the silane coupling agent successful grafted on urethane acrylates were on the product, dry time table, heat resistant adhesive strength, water has improved greatly.
 In this paper, isophorone diisocyanate and hydroxyethyl acrylate as raw materials, first obtained by the reaction of modified hydroxyl isophorone diisocyanate, and then separately with low molecular weight polyether and amino silane reaction of polyether low Silane modified polymers and oligomers, this pre-polymer-based materials, and then, and bisphenol A type epoxy acrylate ester, a photosensitizer such as composite A new type of paint. The cured coating film for glass coating hardness ≥ H, 0 adhesion, abrasion resistance RCA 175g ≥ 300 times, coating appearance of smooth, flexible 1mm, gloss ≥ 90, good overall performance.
Keywords：UV curing, Polyurethane, Organic silicone modified, Prepolymer, Synthesis,