urea formation

Based on character of structure formation of urea formaldehyde ( UF) resin, a new synthesizing technology was designed for making low formaldehyde emission UF resin for bagasse medium density fiberboard ( MDF).

以脲醛树脂结构形成特征为基础，研制了一种甲醛释放量低、内结合强度高的适用于蔗渣中密度纤维板生产的脲醛树脂胶粘剂。

The critical micelle concentrations of SDS in aqueous solution at different temperature and urea concentration were obtained by conductance and the thermodynamic parameters dependence of temperature and urea concentration for the formation of SDS micelle were also obtained by the thermodynamics of micellar formation. 2.

通过水溶液中SDS电导的测定，得到不同温度不同尿素浓度下SDS水溶液的临界胶束浓度，根据胶束形成的热力学特性，得到SDS胶束形成的热力学常数与温度、尿素浓度之间的关系。

study on the influence of fermentation temperature, inoculation amount and addition of inorganic salt to urea formation.

研究发酵过程中的发酵温度，接种量以及添加无机盐的种类和浓度对尿素生成的影响。