正硅酸乙酯的水解问题正硅酸乙酯在水-醇溶液下,ph值4,适量的水正好100%水解后,比如100克正硅酸乙酯和17.31克

这是笔误,SiO2含量应该是28.8%.
正硅酸乙酯的聚合物,SiO2含量大于28.8%,一般说商品是32-40-50,因为缩去了乙氧基.
我是这产品的从业者,不必怀疑.

This experiment was adopted by sol-gel,nitric acid,nitric acid manganese and iron teos,ethanol,deionized water as raw material to process,the preparation of manganese ferrite in spin coating method,and then get manganese ferrite thin sintering get to sample.
Preparation of manganese ferrite sol,high temperature,high will not generate a violent reaction and black consoliated cost.Need to teos drops to keep stirring salt solution,which fully mixing.Got sol should pay attention to adjusting the PH value,make its PH in 2-3.Sol,should put day.Chen
By XRD,sem and magnetic properties of analysis,is helpful to MnFe2O4 / SiO2 composite membrane structure understanding,the correct understanding to the magnetic particles scattered on the structure of the mechanism of silica matrix.Magnetic particle dispersion and stable lies in the structure of silica matrix showed very dependent on the magnetic particle size,showing the characteristics of high magnetic permeability,high strength,low saturation magnetization coercive force and low loss characteristics.
Keywords:sol-gel,magnetic conductivity,saturation magnetization strength,coercive force

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这四个物质很多特征吸收都重叠的厉害
建议减少样品量再做一个图,不要出现平顶峰.
说一些特征,自己去看吧,依次按照吸收强度排序
一、.乙醇
1.3360 特征
2.1090 特征
3.1050 特征
4.880
二、.PVA
1.3400,特征
2.1650 特征
3.1400-1500 手指形三或四连峰, ,特征
4.1300
三、.正硅酸乙酯
1.1170,1110二连峰,特征
2.965 特征
四.、十二胺
1.2800-3000脂肪峰
2.720 长链 特征
3.1620-1650 氨基 特征 弱
从你这个图来看,似乎主要是 正硅酸乙酯,有PVA,其他两个就看不到,这个图太蛋疼了. .

测定水解产物中的乙醇含量和理论计算的值作比较就知道了 ,也可以恒定时间间隔测定乙醇的含量,反应完全时,乙醇含量就不会再增加

杂志很少,主要是纯的正硅酸乙酯,分子量208.3,以SiO2来标定正硅酸乙酯的,60/208,28-29%左右..

最好用旋转蒸发仪,温度大约在60-80度,压力是蒸发仪自己控制的,你抽真空就可以了,另外,升温时现在50度左右看看能否蒸出,蒸不出在升到60,依次类推