塑料保温管材的研究发展

介绍了塑料保温管材的结构、特点、经济性以及市场应用，主要是替代在二次供热管网的钢管，口径不大于400 mm，温度在80 ℃以下。通过保温材原料、使用过程和行业发展，总结了目前此类管材的新发展，期望塑料保温管材未来应用于一次管网、蒸汽输送、保温、输油和高压输送的领域。

Research and Development of Thermal Insulation Plastic Pipelines

This paper introduces the structure, characteristics, main raw materials, economy and market applications of thermal insulation plastic pipelines, which are mainly used to replace the steel pipelines in the centralized secondary network for district heating systems. The caliber of these pipelines usually has a diameter lower than 400 mm and is used at a temperature lower than 80 ℃. By reviewing the use of raw materials, application process and industry development of thermal insulation pipelines, the paper summarized the new development of the plastic pipelines. The thermal insulation plastic pipelines are expected to be applied for the primary heating pipe network, steam transportation, thermal insulation and high-pressure transportation.