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用有机化合物代替水作为原子反应堆的慢化剂-导热剂是很吸引人的,因它除了保存着几乎全部普通水慢化剂的优点外,还有一系列优于水或一般液体金属慢化剂的特性。有机慢化剂-导热剂的优点是:(1)工作温度高于水而低于液体金属(表1);(2)蒸汽压远比水低。在370℃时,水的蒸汽压已超出100多个大气压(374℃为临界温度),而多联苯类化合物,在400—450℃时,不过1.5—15个大气压(表2);(3)在工作温度时,其黏度比液体金属小;(4)与鈾及水不易起化学作用;(5)对习用的反应堆結构材料
Replacing water with organic compounds as moderators in atomic reactors - thermal agents is intriguing given that in addition to preserving the benefits of almost all normal water moderators, there is a range of products that are superior to water or general liquid metal moderators Features. The organic moderator - the advantages of thermal conductivity agent is: (1) working temperature is higher than water and lower than the liquid metal (Table 1); (2) vapor pressure is lower than water. At 370 ° C, the vapor pressure of water has exceeded 100 atm (374 ° C is the critical temperature), while polybiphenyls have a pressure of 1.5-15 at 400-450 ° C (Table 2); (3) ) At work temperature, its viscosity than the liquid metal small; (4) and uranium and water is not easy to play a chemical role; (5) conventional reactor structural materials