Preparation and Properties of PE Wax/PVC Composites
PVC is a kind of polymer materials with corrosion resistance,wear resistance,flame retardant,and excellent mechanical properties,and it has excellent comprehensive performance and low price,widely used in the cable industry.However,the outer sheath of PVC cable is easy to crack when used in high-cold and high-altitude areas,which is easy to cause safety hazards.Therefore,it is very important to study the modification of PVC,such as toughening and strengthening.Calcium stearate(CaSt2),as an excellent lubricant,can effectively improve this defect.The effects of different amounts of CaSt2 on the mechanical properties,low temperature toughness and thermal stability of PVC were studied.The results show that the introduction of CaSt2 can improve the mechanical properties and low temperature toughness of PVC composites.When the content of CaSt2 is 0.3 phr,the elongation at break of CaSt2/PVC is 10.5%higher than that of PVC composite without CaSt2,the tensile strength is 7.8%higher,the embrittlement temperature can reach-60℃,and the thermal stability is improved.This study provides reference value for the high value application of PVC in the high cold area.The calcium stearate modification technology has been applied to the toughening modification of PVC,and certain results have been achieved.
Low temperature toughnessCalcium stearatePolyvinyl chloride
NETL
NSTL
万方数据
