Experimental study of modified aramid staple fibre reinforcin neoprenel/cis-polybutadiene rubber composites
In this paper,aramid fibres were modified by plasma/potassium oleate,and the reinforcing effect of modified aramid fibres on neoprene rubber was investigated.The results showed that the high-energy impact of plasma increased the surface roughness of aramid fibers and increased the surface modification contact area of the aramid fibre.And the introducation of active sites on the surface of aramid fibre,such as hydroxyl(—OH)and carboxyl(—COOH—),can improve the hydrophilicity,lipophilicity,or other specific properties of fiber surface.Potassium oleate modification promoted the weakening of the polarity of aramid fibre and their interfacial bonding with rubber.The effect of plasma/oleic acid modified aramid fibres on the properties of rubber composites were investigated by determining the vulcanisation characteristics and physical and mechanical properties of aramid fibre reinforced rubber.The results showed that the tensile strength,constant tensile modulus,and stiffness of the rubber composites were increased by 25.85%,34.65%and 10.96%,respectively after reinforcement with plasma/oleic acid-modified aramid fibres,and the t10 was decreased while t90 was unchanged.
aramid fibresplasmapotassium oleaterubber compositessurface modificationphysical and mechanical property
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