000			01389nam a2200157Ia 4500
008			220216s9999 xx 000 0 und d
100			_aVisetsillapanont A
245		0	_aCompatibilisation of NR/EPDM using liquid rubbers
260			_bIn: Proceedings of the International Rubber Conference, Kobe, 1995, p67-70
520			_aCompatibility between NR and EPDM is investigated in order to improve the ozone resistance and some physical properties of NR/EPDM blends by utilisation of liquid rubbers and some homogenising agents. n-t-butylbenzothiazole-2-sulphenamide BBS is chosen as the most appropriate accelerator for sulphur vulcanisation of the blends. NR/EPDM blend ratios of 70/30 and 80/20 are chosen for comparison because the 70/30 NR/EPDM cannot resist ozone cracking longer than five days, while the 80/20 NR/EPDM fails within 24 hours under the same condition. Struktol 40MS, Rhenosin 145, liquid NR, liquid EPDM, their combinations and partial crosslinking of these two liquid rubbers at 3, 5 and 8phr are added to the 70/30 and 80/20 NR/EPDM blends. Ozone resistance and tensile properties of the blend vulcanisates are measured. The results showeed that among these additives, 3phr of fluid EPDM could best improve blend ozone resistance and tensile strength.
650			_aCapitability
650			_aEPDM
650			_aNatural rubber
700			_aBualek S
942			_cJS
999			_c56044 _d56044