Plasticizer and manufacturing method thereof

The invention discloses a plasticizer with high surface tension and a manufacturing method thereof, and the manufacturing method of the plasticizer comprises the following steps: mixing binary acid, dihydric alcohol and a catalyst to form a reaction mixture, and enabling the reaction mixture to react in a temperature range of 130-220 DEG C to form a semi-finished product. A blocking alcohol is added to the semi-finished product, and a reaction is carried out in a temperature range of 205 DEG C to 220 DEG C to form a crude plasticizer. The crude plasticizer is purified in a pressure range of 760 to 5 topples to obtain the plasticizer. The molar ratio of the dibasic acid to the dihydric alcohol to the end-capped alcohol is 1: 0.6-0.9: 0.3-0.6, the dibasic acid at least comprises succinic acid or adipic acid, the dihydric alcohol comprises diethylene glycol and 2-methyl-1, 3-propylene glycol, and the end-capped alcohol is ether alcohol or fatty alcohol with the carbon number smaller than or equal to 4. 本发明公开一种高表