PREPARATION METHOD FOR POLYPHENYLENE SULFIDE AND POLYPHENYLENE SULFIDE PREPARED BY MEANS OF SAME

The disclosure relates to a preparation method of a polyphenylene sulfide resin, and a polyphenylene sulfide resin prepared by the method. The disclosure uses a sulfur-containing compound, an alkaline substance and p-dichlorobenzene as raw materials, a fatty acid as a polycondensation aid to carry out a polycondensation reaction. After purification treatment, a primary polyphenylene sulfide is obtained, which then reacts with a terminal-group adjusting agent at a high temperature to generate the polyphenylene sulfide resin. The preparation method of the disclosure has high yield and low cost, and the prepared polyphenylene sulfide resin has high reactivity, high melting crystallization temperature and excellent thermal stability. The polyphenylene sulfide resin of the disclosure can be directly used for extrusion and injection molding, and is especially applicable to fields such as automobile parts, electronic / electrical equipment, chemical industry, and machinery industry.