Effect of different promoters combined on the properties of SBR/NR/RNR sealing materials
Rubber sealing materials were prepared by adding a new type of elastomer material,trans butadiene rubber(TBIR),with styrene butadiene rubber(SBR),natural rubber(NR),and recycled natural rubber(RNR)as the main components.The effect of different promoters on the vulcanization characteristics and mechanical properties of blended rubber was studied.The mass ratios of CZ and TMTD promoters were 1/0,0.9/0.1,0.85/0.15,0.8/0.2,0.75/0.25,and 0.7/0.3,respectively.When the total amount remained unchanged,as the amount of CZ decreased and the amount of TMTD increased,the tensile strength and elongation at break of the co vulcanized rubber gradually decreased,the hardness did not change significantly,and the compression permanent deformation also gradually decreased.The mass ratios of the accelerator NS/TMTD were 1.5/0,1.45/0.05,1.4/0.1,1.35/0.15,1.3/0.2,and 1.25/0.25,respectively.When the total amount remained constant,as the NS dosage decreased and the TMTD dosage increased,the tensile strength of the blended vulcanizate first increased and then decreased,and the hardness did not change much.The permanent deformation during compression gradually decreased.
high trans 1,4-butadiene isoprene copolymer rubberstyrene butadiene rubbernatural rubberseal
NETL
NSTL
万方数据
维普
