一、前 言 近年来,玻璃钢/复合材料在低温工程领域中的研究和应用取得了较大进展。在美国,已有二种符合NEMA标准,并已投入批量生产的玻璃纤维增强材料,这二种材料在低温工程中得到了普遍应用。我国在这方面也进行了不少研究,并在液氮低温容器、球形支撑和膨胀机活塞绝热套(液氢)方面得到应用。但到目前为止,在常温-低温条件下作为承重支撑用的玻璃钢/复合材料还缺乏理想的粘结剂、增强材料及完整的技术数据。 本课题研究的目的是在国产树脂和增强材料的基础上,选择适当材料制作适用于承力支 I. Introduction In recent years, FRP / composite materials in the field of cryogenic engineering research and application of great progress. In the United States, there are two types of glass fiber reinforced materials that meet NEMA standards and are already in mass production. These two materials are commonly used in cryogenic engineering. Our country has also carried on a lot of research in this respect, and has been applied in the liquid nitrogen cryogenic vessel, spherical support and expander piston insulation jacket (liquid hydrogen). However, to date, FRP / composite materials for load-bearing support at room temperature and low temperature also lack ideal binders, reinforcements and complete technical data. The purpose of this study is based on the domestic resin and reinforced materials, select the appropriate material for the bearing branch