The Study Of Pe Non-halogen Flame-retardant Systems And Formulation For Cable Applications

Non-halogen flame-retardant has become an important research aspect of polymer recently. In this paper, a series of non-haiogen flame-retardants was studied, which includ AL(OH)3. Mg(OH)2. red phosphate and APP . On the one hand , we did some researchs about the effects of LPDE system flame retardant proformance mechanical proformance and flow index by adding these additives alone . On the other had , investigation was focused on the effects of partical size and the combined system synergism , including Al(OH)3/Mg(OH)2 system , red phosphate/Al(OH)3/Mg(OI-I)2 system and APP/pentarythriol/melamine (JFR) system At the same time , by changing the basic resign and adding flame-retardant sysnergists , we obtained a series of formulations for cable material. The results showed that the partical size have an important influence on LDPE system fire proformance . The smaller the partical size is , the better the effect of fire-retardant is . In addition the cooperation of Al(OH)3/Mg(OH)2 can lead to a better effect than adding alone . The synergistic reaction was clear when AL(OH)3/Mg(OH)2/P had been combined . Only adding 60 phr Al(OH)3, 60 phr Mg(OH)2 and 8 phr red phosphrous , the LOI can reach 28.4 , and the flame-retardant level is FV-0 IFR system was not able to make the clear influence in LDPE In the end , the formulation with the best properties was obtained LLDPE 70 phr, EPDM 30 phr, Al(OH)3 50 phr, Mg(OLI)2 50 phr , BTJ-J 8 phr , orgnic silicon 5 phr, BaSt 5 phr, APP 4 phr, (C2H5)2Fe 4 phr. The main properties are able to reach the requirments of Q/320200AJ02- 1999...