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- W2392492174 abstract "Foamable propylene was prepared by one-step silane-grafting and cross-linking of co-polymerized polypropylene (CPP) with a reactive extruder, using peroxide as initiator, unsaturated silane with long chain as a grafting monomer, unsaturated hydrocarbon as grafting co-agent in the presence of crosslinking catalyst. The effects of the agent system on the CPP modification were investigated by testing the change of the MFR and gel content. The results showed that the MFR of the modified PP decreased obviously to below 0.1 g/10 min and the gel content was up to more than 48 wt % . Each agent in the formulation had effect on the MFR and gel content of the modified PP, and all of the contents were effective and necessary. The more the contents of initiator and monomer, the lower the MFR, and the more the gel content. The optimum molar ratio of co-agent to silane was 1:1. The results of the comparison of the mechanical and foaming properties of the PP before and after modification indicated that the heat resistance, impact resistance and tensile strength of the modified PP were all improved. Furthermore, a high qualified foam with uniform, closed, fine and independent cells could be fabricated from the modified CPP." @default.
- W2392492174 created "2016-06-24" @default.
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- W2392492174 date "2006-01-01" @default.
- W2392492174 modified "2023-09-25" @default.
- W2392492174 title "High-melt-viscosity Foamable PP Prepared by Silane Grafting and Crosslinking" @default.
- W2392492174 hasPublicationYear "2006" @default.
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