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摘要:以淮薯淀粉为起始原料制备淀粉改性软质聚氨酯泡沫塑料，研究反应条件对产品性能的影响。通过土埋试验考察产品的降解性能。淀粉在聚氨酯的制备过程中参与交联反应，随着淀粉行含量的增加，产品的降解速度加快，且降解的程度也越大。淀粉改性聚氨酯泡沫具有良好的热稳定性、和优异的生物降解性能。本文实验通过分别改变土埋时间和淮薯淀粉的加入量对聚氨酯泡沫塑料进行降解测试，发现随着土埋时间的延长，泡沫的降解程度随之增大。随着淮薯淀粉含量的增加，泡沫的降解程度随之增大。54260
毕业论文关键词 : 聚氨酯，淀粉，降解
Abstract: Huai potato starch as the starting material preparation of starch modification of soft polyurethane foam plastic, study the effects of reaction conditions on product performance. By soil burial test to investigate the degradation of product performance. Starch participation in the process of the preparation of polyurethane crosslinking reaction, with the increase of starch content of line, products of degradation accelerated speed, and the degree of degradation. Starch modified polyurethane foam has good thermal stability, and excellent biodegradability. In this paper, the experiment by respectively changing soil buried for the amount of time and huai potato starch degradation of polyurethane foam test, with the extension of soil buried time, the degradation of the bubble degree increase. With the increase of huai potato starch content, the degradation of the bubble degree increase.
Keyword :polyurethane, starch, degradation
目录
第一章 绪论 4
1.1前言 4
1.2聚氨酯泡沫塑料 4
1.2.1聚氨酯泡沫塑料的基本反应 4
1.2.2聚氨酯泡沫塑料的制备工艺 5
1.2.3软质聚氨酯泡沫塑料的应用及研究现状 6
1.2.4聚氨酯泡沫的结构 7
1.2.5软质聚氨酯泡沫塑料的性能 8
1.3淀粉在聚氨酯泡沫塑料中的应用概况 9
1.3.1淀粉的基本概况 9
1.3.2淀粉在聚氨酯泡沫塑料中的应用概况 10
第二章 实验部分 11
2.1 材料 11
2.1.1原料与试剂 12
2.1.2主要仪器 12
2.2 淀粉改性新型环保聚氨酯泡沫的制备 12
2.3 降解用样品的制备 12
2.4力学性能测试 13
2.5 样品的降解 13
2.5.1用埋土法 13
2.5.2失重率 13
第三章 结果与分析 13
3.1工艺条件的考察 13
3.1.1 NCO／OH比值的影响 13
3.1.2淀粉含量的影响 14
3.1.3淀粉含量在聚氨酯泡沫体最大填充量 15
3.2聚氨酯泡沫塑料的生物降解性能分析...................15
3.2.1形貌分析 15