Nine N,N diacyl adipic dihydrazides were synthesized. The compounds all exhibited remarkable inhibiting effects on the aging of polypropylene(PP) contacted with copper and their metal deactivation activity was incr...Nine N,N diacyl adipic dihydrazides were synthesized. The compounds all exhibited remarkable inhibiting effects on the aging of polypropylene(PP) contacted with copper and their metal deactivation activity was increased with increase in their molecular weight. They didnt reduce the mechanical property of PP. The most effective were N,N dihexanoyl adipic dihydrazide and N,N dioctanoyl adipic dihydrazide. At 150 ℃ their aging periods for PP film were over 510 hours.展开更多
通过金属硝酸盐和草酸二酰肼氧化还原的混合物燃烧方法合成了钙钛矿型 L a Al O3粉末。混合物在 350℃着火燃烧后产物为非晶态 ,进一步在 50 0℃和60 0℃焙烧后得到单相结晶钙钛矿相。混合物的 DSC分析得知 ,混合物的着火起始温度为 34 ...通过金属硝酸盐和草酸二酰肼氧化还原的混合物燃烧方法合成了钙钛矿型 L a Al O3粉末。混合物在 350℃着火燃烧后产物为非晶态 ,进一步在 50 0℃和60 0℃焙烧后得到单相结晶钙钛矿相。混合物的 DSC分析得知 ,混合物的着火起始温度为 34 0℃。这种软化学方法的应用使钙钛矿型 La Al O3的合成温度达到了迄今为止的最低温度。展开更多
文摘Nine N,N diacyl adipic dihydrazides were synthesized. The compounds all exhibited remarkable inhibiting effects on the aging of polypropylene(PP) contacted with copper and their metal deactivation activity was increased with increase in their molecular weight. They didnt reduce the mechanical property of PP. The most effective were N,N dihexanoyl adipic dihydrazide and N,N dioctanoyl adipic dihydrazide. At 150 ℃ their aging periods for PP film were over 510 hours.
文摘通过金属硝酸盐和草酸二酰肼氧化还原的混合物燃烧方法合成了钙钛矿型 L a Al O3粉末。混合物在 350℃着火燃烧后产物为非晶态 ,进一步在 50 0℃和60 0℃焙烧后得到单相结晶钙钛矿相。混合物的 DSC分析得知 ,混合物的着火起始温度为 34 0℃。这种软化学方法的应用使钙钛矿型 La Al O3的合成温度达到了迄今为止的最低温度。
