The mechanical properties of ozonized high density polyethylene(HDPE)blended with sericite-tridymite-cristobalite(STC)were studied in this paper.The experimental results show that some oxygen containing polar groups a...The mechanical properties of ozonized high density polyethylene(HDPE)blended with sericite-tridymite-cristobalite(STC)were studied in this paper.The experimental results show that some oxygen containing polar groups areintroduced on the molecular chain of HDPE through ozonization,the compatibility between HDPE and STC is thusimproved,the mechanical properties of the blend are markedly enhanced.Compared with untreated HDPE/STC(60/40)blend,the yield strength and notched impact strength of ozonized HDPE/STC(60/40)blend are increased from 27.0 MPa to29.5 MPa and from 2.8 kJ/m^2 to 13.3 kJ/m^2,respectively,the notched impact strength is close to that of HDPE(13.6 kJ/m^2),the yield strength is in excess of 3.9 MPa of that of HDPE.The yield strength and notched impact strength will be furtherincreased to 30.7 MPa and 32.4 kJ/m^2 in case the ozonized HDPE is blended with STC pretreated with silane coupling agent.展开更多
基金This project was supported by the Special Funds for Major State Basic Research Projects of China(No.G1999064809).
文摘The mechanical properties of ozonized high density polyethylene(HDPE)blended with sericite-tridymite-cristobalite(STC)were studied in this paper.The experimental results show that some oxygen containing polar groups areintroduced on the molecular chain of HDPE through ozonization,the compatibility between HDPE and STC is thusimproved,the mechanical properties of the blend are markedly enhanced.Compared with untreated HDPE/STC(60/40)blend,the yield strength and notched impact strength of ozonized HDPE/STC(60/40)blend are increased from 27.0 MPa to29.5 MPa and from 2.8 kJ/m^2 to 13.3 kJ/m^2,respectively,the notched impact strength is close to that of HDPE(13.6 kJ/m^2),the yield strength is in excess of 3.9 MPa of that of HDPE.The yield strength and notched impact strength will be furtherincreased to 30.7 MPa and 32.4 kJ/m^2 in case the ozonized HDPE is blended with STC pretreated with silane coupling agent.
