Study on improvement of reliability and durability of industrial commodity with active protection

根据初始计划，采用退化分析方法，对聚合物材料的疲劳和退化的发展进行了实验研究。将人造材料与自然界中的材料以及在传统商品中的应用进行比较，是本研究的主要研究工作之一。在上述两项工作的基础上，通过实验与调查的结合，对精密复杂系统构成的功能性商品的可靠性进行了调查，并对“环境时代”超长寿命材料的概念进行了研究。人工高分子材料热降解的定量研究技术通过对DPC作为模型材料的固定量和热疲劳过程中分子量变化的考察，得出了退化的定量结果。结果，通过以GC/MS为中心的测量，建立了极限要求等数据处理方法，得到了较满意的聚合物链的短期、热、光劣化等指标。人造高分子材料的劣化研究采用“加速热循环试验机”对高分子材料的疲劳性能进行了研究。结果表明，分子量的变化和结构的变化随环数的变化而变化。阐明了高分子材料的疲劳现象与分子链和分子结构相互交织的复杂性有关，是高分子材料寿命预测的难点。此外，通过研究热解、光学变质、力学变质等，澄清了这是一次主链断裂，并且在每次变质中都能够发生构象变化直至切割3。在自然界中的保护功能，以及对传统材料的调查和检验据了解，它往往与生物中的人工制品和零件以及传统材料有所不同。例如，自修复系统的开发，初步材料的制备，可靠性比第一次使用提高。近年来，重点开展了劣化定量评价技术的开发、自然修复系统的研究和疲劳引起构象变化的检测。少

The development of the fatigue and the degradation of polymeric materials have been experimentally achieved by the analytical method of the deterioration according to the initial plan. The man-made materials were compared with the materials in nature and used in the traditional goods as one of the main research works in this study. In the addition to above two works, the reliability of functional goods which are constructed with sophisticated and complicated system has been surveyed and the concept of the materials which have ultra long lives for "Environmental era" by the cooperation of the experiments and the survey.1. Quantitative research technique of heat degradation of artificial polymeric materialsThe result of the quantification of deterioration was achieved from the examination of the fixed quantity that made DPC a model material and the change in molecular weight in the thermal fatigue process. As a result, it came to obtain a satisfactory fixed quantity about the short-term … More collapse of polymer chains of thermal and optical deterioration, etc.by measurement that centered on the GC/MS and establishing the data processing method such as limitary requirement.2. Deterioration research on artificial polymeric materialsThe fatigue behavior of polymeric material was examined by using "accelerated thermal cyclic tester". As a result, the change of the molecular weight and the change of the structure that depended on number of cycle were seen. It was clarified that the longevity forecast of the polymeric materials was difficult because the fatigue phenomenon of the polymeric materials is related to the complexity of intertwining of molecular chain and molecular structures. Moreover, it was clarified that it was a main chain scission and there was able to be a conformational change up to cutting in each deterioration because of researched pyrolysis, optical deterioration, and the mechanics deterioration, etc3. Protection function in the nature, and investigation and examination of traditional materialsIt has been understood to tend to differ from artificial products and parts in the living thing and the traditional materials. For example, the self-repairing system develops, a preliminary material is prepared, reliability rises more than the first with use.At current year, Development of quantitative evaluation technique of deterioration, investigation of repairing system in nature, and examination of conformational change by fatigue were especially done. Less