With these spectral methods, the chemical composition and the structure of the polishing paste for plastics were identified.
通过上述光谱法确定了该塑料抛光膏的化学组成和结构。
Silica gel column chromatography and solvent extraction were used to separate grease and abradant in a kind of excellent polishing paste for plastics, respectively.
分别采用硅胶柱色谱法和溶剂抽提，分离优质塑料抛光膏中的油脂和磨料部分。
Full-biodegradable plastics were prepared by means of melt blending of paste starch with swelled fiber at different blending ratio, with glycerol as plasticizer.
用甘油作为塑化剂，将糊化淀粉和溶胀纤维按不同配比进行熔融共混来制备完全可生物降解塑料。
应用推荐