When the -NCO concentration of diisocyanate compounds is the same, the thickeningrate will be faster with the increase of its molecular weight;
在相同的-NCO浓度下，不饱和聚酯树脂的增稠速度随分子量的提高而加快；
2
Gradual shifting of the spectral band toward high-frequency presents upward thickening succession, which means the upward net depositional rate decrease.
能谱带逐渐向高频方向转移，反映一个向上变薄的序列，即向上净沉积速率减小。
3
Surface viscous acid has been prepared by mixing thickening agent (PAM) and cross? Linking agent (GL-5) with acid, which has the function of retarding reaction rate and sand prevention.