论文部分内容阅读
1982年联邦德国生产了近1.1亿—1.2亿米的地板用塑料管材,现已安装了1亿米。在全国性的及建筑行业的经济衰退中,塑料管材的生产仍比上一年有所增长。塑料管热地板是在地板材料下面铺设一些塑料管,管内通有热水或热气以供取暖。(以下简称热地板)目前联邦德国生产的热地板用管材的材料主要有三种即:聚丁二烯(PB)、聚丙烯共聚物(PP-C)以及交联聚乙烯(VPE)。用
In 1982, the Federal Republic of Germany produced nearly 110 million to 120 million meters of plastic pipes for flooring, and now has installed 100 million meters. In the economic recession of the nationwide and construction industries, the production of plastic pipes still increased from the previous year. The plastic tube hot floor is laid with some plastic tubes under the floor material, and there is hot water or hot gas in the tube for heating. (Hereinafter referred to as hot floor) Currently, there are three main types of hot floor pipe materials produced in the Federal Republic of Germany: polybutadiene (PB), polypropylene copolymer (PP-C), and cross-linked polyethylene (VPE). use