摘要
参照美国材料试验标准ＡＳＴＭＥ９６－８０，研制了用干燥剂法测量保冷材料水蒸汽渗透率（Ｗ＿（ＶＴ））的试验装置，建立了材料水蒸汽渗透性能测试方法及规范，为保冷材料及结构的水蒸汽渗透性能研究提供了有效的手段；利用此装置测试了常用保冷材料的水蒸汽渗透率，为保冷结构的设计及选材提供了可靠的数据。测试结果表明：常用的保冷绝热材料：泡沫玻璃、聚乙烯泡沫、聚氨酯泡沫的水蒸汽渗透率均不为０，从而明确了在保冷结构中必须设置防潮、隔汽层；在此基础上对常用的保冷材料与各种防潮隔汽材料组合而成的保冷结构的水蒸汽渗透性能进行了试验研究，结果表明：目前常用的沥青玛蹄脂并非是最理想的防潮隔汽材料，而铝箔牛皮纸、铝箔玻纤布及铝箔玻璃钢才是理想的防潮隔汽层材料。
With reference to the CODE ASTM E96-80,a testing device for measuring the cold in-sulation material's W_(VT) was developed.The measuring metheds and standard for watervapour transmission of materials were established.The device can provide an effective meansfor studying the W_(VT) of cold insulation materials and their constructions,which fills the gapof this field in our country,With this device,the WVT of several commonly used cold insu-lation materials have been measured.The results shows that none of the W_(VT) of the threecommonly used cold insulation materials,glass foam, polyethylene foam and polyurethanefoam,is zero,It's clear that the moisture prcof barrier must be installed with cold insulationstructure. Based on this,We have made a large number of experiments in the W_(VT) propertyof cold insulation structures which are made up of different cold insulation materials and dif-ferent moisture proof barrier materials. The experiment results show that the asphalt masticcommonly used now is not the most ideal moisture proof barrier material.The aluminum foilkraft paper,the aluminum foil glass cloth and the aluminum foil glass fiber with reinforcedplastic are the ideal moisture prcof barrier materials.
出处
《大庆石油学院学报》
EI
CAS
北大核心
1995年第4期129-133,共5页
Journal of Daqing Petroleum Institute
基金
中国石油化工总公司"八.五"攻关课题
关键词
保冷结构
保冷材料
防潮
隔汽层
油管
cold insulation structure,cold insulation materials,moisture prcof barri-er,water vapour transmission, experiment research
