化工学报2025，Vol.76Issue(z1)：462-468,7.DOI:10.11949/0438-1157.20241289
适配环保制冷剂R290的阻燃剂性能研究
Performance of flame retardant for environmentally friendly refrigerant R290
摘要
Abstract
At present,the international community demand for environmentally friendly working fluids is more and more big,but their use is limited due to their flammability.This study experimentally tested the inhibition effect of R227ea on the flammability of environmentally friendly working fluid R290.It was found that as the proportion of R227ea increased,the lower flammability limit of the mixture gradually increased,and the upper flammability limit first increased and then decreased.The critical inhibitory ratio of R227ea on the flammability of R290 was 3.35.Considering the strong greenhouse effect of R227ea,this study proposed to add environmentally friendly R1216 to R227ea to form a new hybrid flame retardant,thereby achieving"complementary advantages"in their performance.The new mixed flame retardant has a large unit volume cooling capacity compared to R227ea,higher cooling coefficient and thermal conductivity compared to R1216,and lower viscosity.By comparing the performance of ternary mixed refrigerant R290/R227ea/R1216 with pure refrigerant R290,it was found that when the composition ratio of R290/R227ea/R1216 is 21%/6%/73%,its coefficient of performance and unit volume cooling capacity were 103.8%and 94.2%of pure R290,respectively,and its environmental friendliness and flammability meet the requirements.The research results have reference significance for the safe application of R290 and the study of new hybrid flame retardant.关键词
制冷剂/R290/阻燃剂/可燃性/二元混合物/爆炸/有机化合物Key words
refrigerant/R290/flame retardant/flammability/binary mixture/explosions/organic compounds引用本文复制引用
冯彪,张昭,李思琪,王秉睿,吴红颖,史淼,王丹,马素霞..适配环保制冷剂R290的阻燃剂性能研究[J].化工学报,2025,76(z1):462-468,7.基金项目
国家自然科学基金青年基金项目(52106024,12104333) （52106024,12104333）
山西省基础研究计划青年科学研究项目(20210302124447) （20210302124447）
中国博士后基金资助项目(2022M722343) （2022M722343）
