硫酸二乙酯酸值对123树脂固化的影响研究

用微热量热法研究了用不同酸值的硫酸二乙酯作固化剂时123树酯的固化过程，结果表明，酯值大于1％的硫酸二乙酯对123树脂的固化速度与固化反应深度有较大影响。当酸值小于1％时，固化的速率、深度和热效应基本不变。用FTIR研究了123树脂的固化机理，发现随着固化反应的加深，1651cm^-1处的〉C＝C〈特征峰、3095－3075cm^-1和3040－3010cm^1处的＝CH2特征峰强度明显减弱，表明交联反应发生在单体的不饱和双键处。

Influence of Acid Value in Diethyl Sulfate on the Curing Process of 123 Resin

The curing process of 123 resin was studied by means of microcalorimetry with diethyl sulfate as a curing agent. The results show that the acid value(greater than 1 percent) of diethyl sulfate has an effect on the curing rate and cured degree. When acid values of diethyl sulfates vary in a proper range(less than 1 percent),curing rate,cured degree and curing heat of 123 resin will not be affected.The curing mechanism of 123 resin was studied through FTIR technique. It shows that with the deepening of cured degree,the magnitude of characteristic peaks of CC at 1 651 cm-1 、CH2 at 3 095～3 075 cm-1 and 3 040～3 010 cm-1 attenuates sharply,indicating that the cross-link reaction takes place on the non-saturated double bond within the CC group for monomers Ⅰ and Ⅱ.