玻璃纤维表面对ESPCEG的吸附过程研究  

Study on Glass Fibre Surface Adsorption of ESPCEG

作　　者：董莲叶[1] 闻荻江[1] 

机构地区：[1]武汉工业大学材料科学与工程系

出　　处：《武汉工业大学学报》1990年第3期6-11,共6页

摘　　要：本文测定了玻璃纤维在双[γ-(三乙氧基硅基)丙基碳酸酰氧基]二甘醇(ESPCEG)/水/乙醇体系中吸附 ESPCEG 的等温线(4℃、29℃)及吸附热△H。结果表明,玻璃纤维表面在上述体系中吸附 ESPCEG 是多分子层吸附;吸附量随溶液深度升高而增加;并进而计算得纤维表面吸附的 ESPCEG 的厚度与溶液深度的关系。其吸附过程是放热过程,吸附热△H 为-5. 930 J·g^(-1) ;在吸附进行16min 左右时,有一最大放热峰,大约2hr 左右达到吸附平衡。Glass fibre equal temperature curves(4℃,29℃)and its enthalpy change for adsorption of bis [γ-(triethoxy silyl)propyl carbonyloxy]bcethylene glycol(ESPCEG)in the system of ESPCEG/wa- ter/alcohol were measured.The resolts show:glass fibre surface adsorption of ESPCEG in the system mentioned above is of multilayer,the amount of which increases with the rise in solution concentra- tion.The relation between the concentration and the adsorption thickness of ESPCEG on the surface of glass fibre has been known throogh calculation.The adsorption is exothermic.And its enthalpy change His-5. 893 J.g^(-1) . An obvius exothermic peak is observed in about 16 minutes during the adsorption and its equilibri- um is reached in aboot 2 hoors.

关 键 词：玻璃纤维 吸附 硅烷 表面 ESPCEG 

分 类 号：TQ171.771[化学工程—玻璃工业]