Spherulites of some polymers such as PE, PP and PS during melting crystallization under different conditions are studied by means of polarized microscope.
利用偏光显微镜，对高聚物(PP,PS和PE)在不同条件进行熔融结晶时的球晶进行了研究。
The technical process of hot cracking, catalytic cracking and catalytic upgrading for producing gasoline and diesel fuel with waste plastics such as PE, PP and PS were studied.
本文系统地研究了废塑料催化热裂解、废塑料和重油混合热裂解、催化改质制备燃料油的特性和改质催化剂的制备。
OB widely used in PVC, PE, PP, PS, ABS and other thermoplastics, as well as paints, inks and coatings such as whitening.
转播广泛应用于聚氯乙烯，聚乙烯，聚丙烯，聚苯乙烯，ABS等热塑性塑料，以及油漆，油墨，涂料等美白。
OB widely used in PVC, PE, PP, PS, ABS and other thermoplastics, as well as paints, inks and coatings such as whitening.
转播广泛应用于聚氯乙烯，聚乙烯，聚丙烯，聚苯乙烯，ABS等热塑性塑料，以及油漆，油墨，涂料等美白。
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