Glycerol acetate plasticizer for PVC (Polyvinyl Chloride) sheet and method of preparing glycerol acetate plasticizer

Abstract

The invention relates to a glycerol acetate plasticizer for a PVC (Polyvinyl Chloride) sheet and a method of preparing the glycerol acetate plasticizer. The glycerol acetate plasticizer is prepared from the following components in parts by weight: 100 parts of PVC, 2 parts of an organic tin stabilizer, 40 parts of a glycerol acetate plasticizer, 5 parts of epoxidized soybean oil, 0.4 parts of an internal lubricant and 0.2 parts of an external lubricant, wherein the glycerol acetate plasticizer is a mixture of glycerol triacetate and o-phenyl and p-phenyl plasticizers; 40 parts by weight of the glycerol acetate plasticizer include 20 to 30 parts by weight of the glycerol triacetate and 10 to 20 parts by weight of the o-phenyl and p-phenyl plasticizers. The method of preparing the glycerol acetate plasticizer comprises the four steps of charging, stirring, mixing and sheeting. The glycerol acetate plasticizer for the PVC sheet and the method of preparing the glycerol acetate plasticizer have the advantages that the prepared composite plasticizer is environmentally-friendly and low in toxicity, and a prepared PVC sheet is high in quality, good in elastic performance and resistant to high temperature; moreover, the method is simple, and the process conditions are stable and easy to control, and the process flow is simple and environmentally-friendly, and industrial production is facilitated.

Description

technical field [0001] The invention relates to plasticizing processing technology, in particular to a kind of glyceryl acetate for PVC sheet [0002] Plasticizers and methods for their preparation. Background technique [0003] Polyvinyl chloride (PVC) is widely used in insulating materials, building materials and daily-use plastic products due to its low price and excellent performance, such as PVC water pipes, slippers, wire and cable materials, etc. In recent years, my country's total demand for PVC is still showing a stable double-digit growth trend. However, due to structural defects in the PVC molecular chain, hydrogen chloride will be released when heated to 110°C, and the released hydrogen chloride will accelerate the decomposition of PVC. Decrease in mechanical properties, etc., will affect service life. To prevent PVC from degrading during processing, heat stabilizers are added. At present, during the processing of PVC sheet, the curing time is relatively long...

AI Technical Summary

Problems solved by technology

At present, during the processing of PVC sheets, the curing time is relatively long, and plasticizers need to be improved.