煤矿安全2019，Vol.50Issue(7)：21-25,30,6.DOI:10.13347/j.cnki.mkaq.2019.07.006
冷却服相变蓄冷填充材料特性实验研究
Experimental Study on Properties of Phase Change Cold Storage Materials Filled in Cooling Suits
摘要
Abstract
With the increase of mining depth, thermal damage has become one of the main disasters affecting the safety of mine production. Wearing a cooling suit is an effective individual protective measure to protect the human body from heat damage in high temperature and high humidity environment. The phase-change material filled in the cooling suit has an important influence on the performance of the cooling suit. In this paper, the cooling agent, anti-supercooling agent, nucleating agent, characteristic of base liquid and formation method of gel were studied experimentally. Results show that NaCl can be used as a phase change point in -2 ℃ to -5 ℃ cooling agent and KCl can be used as a phase change point in -5 ℃ to -10 ℃; Na2B4O7·10H2O with a mass concentration of 0.5% can reduce supercooling of NaCl solution, while Na2B4O7·10H2O with a mass concentration of 1.0% can reduce supercooling of KCl solution. Under the catalysis of citric acid, the gel formed by chemical crosslinking of polyvinyl alcohol and glutaraldehyde are stable and have high latent heat. The mixed solutions of pva, glutaraldehyde and citric acid with the concentration of 7%, 10% and 2%, with a mass of 20∶1.1∶1, can be used as the ideal base solution for the phase change cold storage material filled with the cooling suit.关键词
高温环境/冷却服/相变蓄冷材料/热害防治/降温剂Key words
high temperature environment/cooling suit/phase change cold storage material/thermal damage control/cooling agent分类
矿业与冶金引用本文复制引用
姬长发,姬晨阳,王展荣,李生金,陈柳..冷却服相变蓄冷填充材料特性实验研究[J].煤矿安全,2019,50(7):21-25,30,6.基金项目
国家自然科学基金青年科学基金资助项目(51404191) （51404191）
