Effect of ETU on Crosslinking of PVC and PVC/ENR Blend |
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DOI: |
Key Words: ETU;PVC;ENR;crosslink |
Author Name | Affiliation | Zhang Ping | Qingdao Institute of Chemical Technology | Li Peijun | Qingdao Institute of Chemical Technology | Fan Haigang | Qingdao Institute of Chemical Technology | Yang Huaqin | Qingdao Institute of Chemical Technology | Zhao Shugang | Qingdao Institute of Chemical Technology |
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Abstract: |
The effect of ethylene thiourea(ETU)and ETU/sulfur on crosslinking of PVC and PVC/ENR blend was studied in terms of crosslinking rate,compression set,gel content,tensile properties and heat resistance etc.It was found that ETU or ETU/sulfur were the suitable crosslinking systems for PVC and PVC/ENR blend;the physical properties and the heat resistance of crosslinked blend improved significantly;the proper increase of ENR proportion was benificial to the thermal stability of PVC/ENR blend;when the blending ratio of PVC/ENR was 70/30,the optimum level of sulfur was 1.5 phr,and DM/TMTD was the best accelerating system. |
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