【作者】 胡娟；

【导师】 郭腊梅；

【作者基本信息】 东华大学 ， 纺织工程， 2011， 硕士

【摘要】 粘合剂的在纺织加工中应用广泛,但其特殊的化学结构与特性使在自然环境中很难降解,对环境造成了一定的压力。基于这个背景,环保型的可生物降解胶粘剂应运而生。聚酯热熔胶就是其中一种,目前,一类新型聚酯正受到越来越多关注,其中,聚乳酸和聚己内酯由于具有很好的生物降解性能、良好的生物相容性和生物可吸收性,在医用材料方面有很广泛的应用。聚乳酸和聚己内酯在医用和可降解工业用品方面有很多的研究,但用于纺织品的粘合剂研究目前还未有报道。本课题参考已发表的关于聚乳酸及其聚合物的文献,通过利用乳酸与己内酯的共聚,来改善提高聚合物的性能,使之符合粘合剂的使用要求。在聚酯粘合剂的试制备过程中,本文通过对合成方法的探索,确定采用DL-乳酸和ε-己内酯为单体熔融共聚的方法。在抽真空的条件下,以辛酸亚锡为催化剂,控制预聚合时间、聚合时间和温度等反应条件,制备乳酸基粘合剂。利用红外光谱法、GPC、DSC等分析方法来考察聚合物的各项性能,并通过单因子试验,分析总结出最佳的单因素。利用最佳的聚合反应条件,熔融聚合出乳酸基粘合剂。最后探索适合本文所制备的乳酸基粘合剂的织物上胶工艺。通过对织物常用上胶工艺的总结和分析及乳酸基粘合剂上胶的试验,得出撒粉法和薄膜法均适合本文的乳酸基粘合剂的上胶工艺。在薄膜法试验中,通过对薄膜厚度的控制,制备出不同厚度的乳酸基粘合剂薄膜,并进行剥离强度的测试,分析考察其中最优的薄膜厚度,也即上胶量。通过最佳的合成方案制备的乳酸基聚酯粘合剂具有生物相容性、可降解性、粘合性能和机械强力较好,且其织物上胶工艺操作简便,在纺织品领域得有广阔的发展前景。更多还原

【Abstract】 In textile industry, the adhesive can improve the superficial performance and the quality of the yarn or the textile, which will be easy to be processed, so the application of the adhesive becomes more and more widespread. As a result of the special chemical constitution and the characteristic of adhesive, the adhesive are very difficultly degraded in the natural environment, which has created certain pressure to the environment. Based on this background, the environmental biodegradable adhesives have appeared in recent years. The polyester hot melt adhesive is one kind of these new kinds. At present, the new polyester adhesive mainly contains the poly-hydroxyl-butyric acid/valerian ate the poly-lactide (poly-lactic acid) and the poly-caprolactone (PCL) and so on. The poly-lactic acid and the poly-caprolactone have the very good biodegradation performance, the good biological compatibility and the biological absorbability. And they have very widespread application in the medical material aspect. The poly-lactic acid and the poly-caprolactone have many researches in medical and the industrial degraded goods, but the research report of application in the textile has few at present. In this paper, referencing the papers have been published about the poly-lactic acid and the poly-caprolactone, through the copolymerization of D,L-lactic acid andε-caprolactone, improves the performance of the polymer, make it to meet requirements of the textile adhesive.In the paper, through exploring the method of synthesis, use the D, L-lactic acid andε-caprolactone as the monomer to fusing copolymerization. Through assembling polymerization device, in the conditions of vacuum, used caprolactone as catalyst, controlled per-polymerization time, polymerization time and temperature, prepared the adhesive based lactic acid.Using the analysis method of FTIR, GPC, and DSC to characteristic the various performances of polymer and through the experiment of single factor, analyzed and summarized the best single factor. Prepared the adhesive based lactic using the best reaction conditions.Finally explored the suitable sizing process of textiles to the adhesives based on lactic acid. Through summarizing and analyzing the normal sizing process of fabric, determined the film method and the scatter power method were both suitable to this kind adhesive. In the trial of film method, controlled the thickness of the film, and did the peel strength test of these different thickness adhesive. Through the tests, analyzed the most optimal thickness.The polyester adhesive based on lactic acid made using the best synthetic method. It has biocompatibility, biodegradability, good mechanical property, good adhesive property, and its gluing processes were easy. Hence, it has broad prospects for development in textile.更多还原