非异氰酸酯聚氨酯结构与性能的研究
毕业论文关键词：线性非异氰酸酯聚氨酯；合成；结构表征；过氧化物硫化；力学性能
Study on the structure and properties of non- isocyanate polyurethane
Abstract: In this article, the best conditions for the synthesis and curing of linear non- isocyanate polyurethane are explored. To obtain the best synthetic proportion, we investigate the properties of the cyclic carbonate and aromatic amine in different molar ratio of NIPU. On the basis of the determined synthetic formula, the reaction conditions were acquired by changing some factors, such as the temperature, time and catalyst content. The mechanical properties of the linear non-isocyanate polyurethane were improved by curing and changing the peroxide ratio. The experimental results show that the reaction is almost completed after reacting in 120℃ and 24h. The mechanical properties are the best when the molar ratio of cyclic carbonate and aromatic amine is 1:1. While the content of DCP is 7%, the comprehensive performance of NIPU is relatively good. This NIPU has the lowest elongation at break, the highest tensile properties and moderate hardness.
Keywords：linear non- isocyanate polyurethane; synthesis; structural characterization ;peroxide vulcanization; mechanical properties
目 录
1 绪论 1
1.1研究目的和意义 1
1.2文献综述 1
1.2.1 NIPU的发展历史 1
1.2.2 NIPU的分类 2
1.2.3 NIPU的合成反应机理 2
1.2.4 非异氰酸酯聚氨酯的合成原料 3
1.2.4.1环碳酸酯的制备 3
1.2.4.2多元胺 5
1.2.5 非异氰酸酯聚氨酯的合成 5
1.2.5.1热塑型非异氰酸酯聚氨酯 5
1.2.5.2热固型非异氰酸酯聚氨酯 6
1.2.5.3杂化NIPU及改性NIPU 7
1.2.6 非异氰酸酯聚氨酯的应用领域 7
1.2.6.1涂料 7
1.2.6.2胶黏剂 9
1.2.6.3泡沫塑料 9
1.2.6.4弹性体等材料 9
1.2.6.5复合材料工业 10
2 实验部分 10
2.1实验药品 10
2.1.1原料 10
2.1.2 硫化药品 11
2.2 实验仪器与装置 11
2.2.1 合成的主要实验仪器 11
2.2.2 测试仪器 11
2.3实验方案 12
2.3.1 线性NIPU的合成方案 12
2.3.1.1双官能度环碳酸酯的合成 12
2.3.1.2 线性NIPU的合成 12
2.3.2 线性NIPU的硫化 12
2.4测试与表征 13
2.4.1 测定所需溶液的配置 13
2.4.2 碘值法测定原理 14
2.4.3 性能表征 14
2.4.3.1原料纯度的测定 14
2.4.3.2红外光谱测试 15
2.4.3.3核磁共振测试 15
2.4.3.4力学性能测试 15
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