聚氨酯醇解产物评价体系构建研究
关键词：记忆海绵；醇解；多元醇
The Structure of Evaluation System on Polyurethane Alcoholysis Product
Abstract:In this paper, the article studied memory foam, and recycled polyol from it by glycolysis.By changing the types of alcoholysis agents,changing the glycolysis temperature, changing the ratio of alcoholysis agents and memory foam, the article studied systematically the glycolysis of memory foam, separated the glycolysis product, and analysis the polyol in the upper layer,filtered out the optimal conditions by measuring the ammonia value, acid value, hydroxyl value, viscosity of alcoholysis product , etc.Fourier transform infrared spectroscopy(FTIR) experiment shows that the raw materials for memory foam are polyether alcohol and toluene diisocyanate (TDI). It is showed that the best optimal alcohol solution time is 4h, , the best optimal alcohol solution emperature is 200 ℃, the best ratio of memory foam and alcoholysis agent is 1:1 through the determination of hydroxyl value and viscosity of alcoholysis product. Experimental results show that the effect of 1, 4 - butanediol on memory sponge alcoholysis is better, and join the alcoholysis aid can accelerate the alcoholysis reaction rate, thus can reduce the reaction time.
Keywords: memory foam; glycolysis ; polyol
目 录
1 绪论1
1.1 聚氨酯回收利用.1
1.1.1回收方法1
1.1.2废旧聚氨酯再生利用实例2
1.2 聚氨酯醇解简介.2
1.2.1 聚氨酯醇解的研究进展2
1.2.2聚氨酯醇解机理.3
1.2.3聚氨酯醇解工艺.4
1.2.4聚氨酯醇解技术的意义.4
2 本论文的研究目的和内容6
2.1 研究目的.6
2.2 研究内容.6
3 实验部分6
3.1聚氨酯醇解 .6
3.2 聚氨酯醇解产物测定.9
3.2.1 羟值滴定9
3.2.2粘度测定.10
3.2.3酸值测定11
3.2.4水含量11
3.2.5产物组分红外光谱分析.12
4 结果与讨论13
4.1 记忆海绵原料分析.13
4.2 醇解剂的选择.13
4.3 反应温度的确定.14
4.4 反应时间的确定.15
4.5 助醇解剂对醇解产物的的影响.17
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