木橡胶的动态压缩力学性能及其破坏行为

doi:10.11707/j.1001-7488.20141223

Abstract

Abstract:

In this paper, by molding the wood fiber and adhesive curing prepared wood rubber, and by doping iron colloid way in the performance of the modified rubber, rubber wood prepared doping. Using split Hopkinson pressure bar on the preparation of undoped and doped rubber wood dynamic compression test, then the samples were observed on the macro impact, results showed that the surface mixed hardwood rubber had higher dynamic mechanical strength and impact resistance deformation ability. Using scanning electron microscopy microscopic damage morphology after impact specimens were observed, and through the analysis of the results, found that adiabatic temperature rise on the strength of rubber wood doping less than undoped rubber wood which come from impact process. When the strain rate of 1 800 s^-1,doping wood damage in the form of softening rubber wood fiber tear and tensile failure of colloids, mixed hardwood rubber specimen occurred only 45° splitting failure; Without doping destruction in the form of rubber wood softened colloids even melted, and thus eventually be crushed rubber wood, wood fiber spreading, the sample overall failure.

Key words: wood rubber, dynamic compression, Hopkinson pressure bar, microscopic damage

CLC Number:

S781.7

Yang Chunmei, Wu Zhe, Ma Yan, Zhang Yaxin, Qi Yingjie, Li Mingbao. Dynamic Mechanical Properties and Micro-Fracture Behavior of Wood Rubber[J]. Scientia Silvae Sinicae, 2014, 50(12): 161-167.

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Dynamic Mechanical Properties and Micro-Fracture Behavior of Wood Rubber

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