China Plastics ›› 2024, Vol. 38 ›› Issue (5): 61-65.DOI: 10.19491/j.issn.1001-9278.2024.05.011

• Materials and Properties • Previous Articles     Next Articles

Study on polymerization modification of ground calcium carbonate and its application in poly(vinyl chloride)

LAN Qing, HOU Xinyi, LI Yifan, PAN Kai(), ZHOU Jiaju, HUANG Danmeng, HUANG Haobing   

  1. Institute of New Functional Materials of GIIT,Co,LTD,Nanning 530000,China
  • Received:2023-08-02 Online:2024-05-26 Published:2024-05-20

Abstract:

Ground calcium carbonate was modified through water grinding and polymerization modification to fit the application in poly(vinyl chloride)(PVC) pipes, and its structure and performance were investigated by using particle size analyzer, thermogravimetric analyzer, infrared spectrometer, pendulum impact testing machine, universal tensile testing machine, colorimeter, and gloss meter. The results indicated that the surface coating modification of calcium carbonate with polyvinyl acetate could be performed through in situ polymerization in calcium carbonate slurry. Compared to conventional stearic acid⁃modified calcium carbonate, polyvinyl acetate⁃modified calcium carbonate exhibited better appearance and mechanical properties in the PVC application. This is due to the fact that polyvinyl acetate can better enhance the compatibility between calcium carbonate and polyvinyl chloride.

Key words: ground calcium carbonate, poly(vinyl chloride), polymerization modification, poly(vinyl acetate)

CLC Number: