Using carbon black N220 and silicon fiber as reinforcing agents of NR/SBR composite adhesive, the effects of the dosage of silicone emulsion on the properties of NR/SBR composite adhesive were studied in order to provide some support for the practical application of silicone emulsion.The final conclusions are as follows:

(1) With the increase of the dosage of silicone emulsion, the Mooney viscosity of NR/SBR composite adhesive decreased, indicating that silicone emulsion could improve the processing property of the composite adhesive. The t10 and t90 of NR/SBR compound were shortened, which indicated that the silicone emulsion would reduce the processing safety of the compound, but increase the vulcanization rate of the compound.

(2) With the increase of the amount of silicone emulsion, the tensile strength, elongation at break, tear strength and DIN wear of NR/SBR combined adhesive first increased and decreased. When the dosage of silicone emulsion is 6.8 parts, the physical properties and wear resistance of NR/SBR adhesive are the best.

(3) The Payne effect of NR/SBR mixed with silicone emulsion dosage of 6.8 parts was the weakest, and the dispersion of carbon black was the best.