Effects of interphase conditions on the tensile and fatigue properties of short-fiber reinforced rubber

摘要

The effects of the amount of nylon-66 short-fiber and its bonding to a chloroprene rubber were studied. the following results were obtained: (a) The tensile strength of short-fiber reinforced rubber 9SFRR) exhibits a dilution effect in each interphone. It was found that the interphone conditions have an important effect on the dilution ratio and the critical fiber content. The specimen with double coatings of the bonding agent and a rubber solution, becomes the best of 5 interphone models. Both the yield strength and tensile modulisignificantly improve with fiber content. Both the yield strength and tensile moduli significantly improve with fiber content. (b) The spring constant (SC) of reinforced rubber decreases after the fatigue test, however, the SC of all reinforced rubbers increases. The change in SC or reinforced rubber decreases with fiber content. The better the interphone condition, the smaller the change of the SC. (c) The temperature of rubber increases about 2.6 fold after the fatigue test. The reinforced rubbers show a 1.4 and 2.2 fold increase in temperature the temperature changes during the fatigue test of the reinforced rubbers decrease with increasing fiber content, as well as with improved interphone bonding.