合成化学
閤成化學
합성화학
CHINESE JOURNAL OF SYNTHETIC CHEMISTRY
2009年
6期
675-678
,共4页
王大喜%邢彦岭%沈新春%栗秀刚%徐春明
王大喜%邢彥嶺%瀋新春%慄秀剛%徐春明
왕대희%형언령%침신춘%률수강%서춘명
苯基三氯硅烷%甲基三氯硅烷%倍半硅氧烷树脂%热稳定性%量子化学%合成
苯基三氯硅烷%甲基三氯硅烷%倍半硅氧烷樹脂%熱穩定性%量子化學%閤成
분기삼록규완%갑기삼록규완%배반규양완수지%열은정성%양자화학%합성
phenyltrichlorosilicane%methyltrichlorosilicane%silsesquioxane resin%thermal stability%quantum chemistry%synthesis
以苯基三氯硅烷和甲基三氯硅烷为主要原料,以不同摩尔比(1:1,2:1,3:1)合成了三种梯形聚苯基/聚甲基倍半硅氧烷树脂(1～3),其结构经UV和IR表征.热重分析发现,1～3的热分解温度分别为470 ℃,517 ℃和540 ℃,说明随着苯基三氯硅烷与甲基三氯硅烷摩尔比增大,热稳定性增加.用量子化学方法计算发现苯基硅氧烷的C-Si键长比甲基硅氧烷C-Si键短,且更牢固.
以苯基三氯硅烷和甲基三氯硅烷為主要原料,以不同摩爾比(1:1,2:1,3:1)閤成瞭三種梯形聚苯基/聚甲基倍半硅氧烷樹脂(1～3),其結構經UV和IR錶徵.熱重分析髮現,1～3的熱分解溫度分彆為470 ℃,517 ℃和540 ℃,說明隨著苯基三氯硅烷與甲基三氯硅烷摩爾比增大,熱穩定性增加.用量子化學方法計算髮現苯基硅氧烷的C-Si鍵長比甲基硅氧烷C-Si鍵短,且更牢固.
이분기삼록규완화갑기삼록규완위주요원료,이불동마이비(1:1,2:1,3:1)합성료삼충제형취분기/취갑기배반규양완수지(1～3),기결구경UV화IR표정.열중분석발현,1～3적열분해온도분별위470 ℃,517 ℃화540 ℃,설명수착분기삼록규완여갑기삼록규완마이비증대,열은정성증가.용양자화학방법계산발현분기규양완적C-Si건장비갑기규양완C-Si건단,차경뢰고.
Three ladderlike polyphenyl/methyl silsesquioxane resins(1～3) were synthesized from methyltrichlorosilicane and phenyltrichlorosilicane with different ratios of 1 :1, 2 :1 and 3 :1, respectively. The structures were characterized by UV and IR. The thermal decomposition temperatures of 1～3 are 470 ℃, 517 ℃ and 540 ℃, respectively by DTG. The thermal stability of the polymer increased with the increase of mole ratio of phenyltrichlorosilicane to methyltrichlorosilicane. It is found by quantum chemistry calculation that the C-Si bond length of phenyl silicone is shorter and firmer than that of methyl silicone.
