| Study on reinforcement mechanism of short fiber/rubber foam composite |
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| DOI： |
| Key Words: short fiber；rubber foam composite；tensile；compression；reinforcement mechanism |
| Author Name | Affiliation | | LIN Gui | Beijing University of Chemical Technology | | ZHANG Jian-chun | Qartermaster Research Institute of General Logistics Department，CPLA | | ZHANG Xiu-juan | Beijing University of Chemical Technology | | XU Bin-yang | Beijing University of Chemical Technology | | LI Guang-yu | No.295 Rubber Roll Factory | | ZHANG Li-qun | Beijing University of Chemical Technology |
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| Abstract: |
| The rubber foam composites without short fiber (RF)，reinforced by untreated short fiber (USRF) or pretreated fiber (TSRF) were prepared by mold foam technique.The morphology of cell and short fiber in each composite and the reinforcement mechanism of short fiber in the composite during tensile and compression processes were investigated.The results showed that the cells distributed uniformly in the matrixes of all three composites；the compression molding technique made the short fiber distribute planaryly in the matrix；the short fiber could improve the tensile modulus of composite at the first stage and the modulus at 100% elongation，and had little effect on tensile strength；the untreated fiber was surrounded with many cells，but the pretreated fiber bonded well to the rubber matrix，which was beneficial to transfer the stress and confine the deformation in rubber matrix；the short fibers，whether pretreated or not，had little effect on the compressive modulus at the compressive elasticity stage because they were planaryly oriented in the cell walls which were the main loading elements；and the short fiber，especially the pretreated short fiber greatly restricted the distortion at the high compressive strain stage resulting in higher compressive strength. |
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