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玻璃纤维表面对ESPCEG的吸附过程研究
Study on Glass Fibre Surface Adsorption of ESPCEG
【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。
【Abstract】 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 systemmentioned 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 ofglass fibre has been known throogh calculation.The adsorption is exothermic.And its enthalpy changeHis-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.
【Key words】 Fiber glass; Surface; Adsorption; Bis[γ-(triethoxy silyl)propyl carbonyloxy]bcethylene glycol;
- 【文献出处】 武汉工业大学学报 , 编辑部邮箱 ,1990年03期
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