甲基纤维素与聚氨酯复合材料的研究
毕业论文关键词： 聚氨酯；甲基纤文素；复合材料；拉伸强度
Research of Methyl cellulose and polyurethane composites
Abstract: This article is mainly for a modification of polyurethane composites by use Methyl cellulose. By adding different viscosity and different percentages of Methyl cellulose in order to obtain composite materials with good heat resistance and strong mechanical properties ,in order to broaden the scope of application of polyurethane, trying to develop a good performance polyurethane composite material can be widely used in industrial. According to the summary of preliminary experimental work, choosing polyurethane as substrate, then add different viscosity of Methyl cellulose to prepare polyurethane composites, By its mechanical properties and thermodynamic test, XRD and infrared spectroscopy, the performance improved, this was due to a combination of Methyl cellulose reinforcement in the soft matrix and increased effective cross-link density of the elastomer network. Tensile tests shows, polyurethane composite material with high tensile strength. In particular 1% of Methyl cellulose, the tensile strength increased significantly. The tensile strength of polyurethane composites overall increased, elongation at break have a opposite trend.
Keywords: Polyurethane;Methyl cellulose;Composites;Tensile strength
目录
1 绪论 1
1.1 聚氨酯弹性体的概况 1
1.1.1 聚氨酯弹性体的概述 1
1.1.2 聚氨酯弹性体的结构 1
1.2 聚氨酯弹性体的性能与反应机理 3
1.2.1 聚氨酯弹性体的性能 3
1.2.2 聚氨酯弹性体的反应机理 4
1.2.3 聚氨酯复合材料的制备 4
1.3 聚氨酯复合材料在各领域的应用 5
1.4 聚氨酯的发展历史 5
1.5 聚氨酯的改性研究 7
1.6 甲基纤文素的概况 9
1.6.1 甲基纤文素的概述 9
1.6.2 甲基纤文素的溶解方法 9
1.6.3 甲基纤文素的应用 9
1.7 研究目的与意义 10
1.7.1 研究目的 10
1.7.2 研究意义 10
2 实验部分 11
2.1 实验的主要原料 11
2.2 实验用仪器 11
2.3 实验过程 12
2.3.1 聚氨酯复合材料基体配方的确定 12
2.3.2 聚氨酯复合材料中A组分的制备 12
2.3.3 聚氨酯复合材料的制备 12
2.4 聚氨酯复合材料的性能表征 12
2.4.1 拉伸性能测定 12
2.4.2 动态机械分析仪测试 13
2.4.3 傅里叶变换显微红外成像光谱仪测试 13
2.4.4 X射线衍射仪测试 13
3 结果与讨论 14