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

林业科学 ›› 2014, Vol. 50 ›› Issue (12): 161-167.doi: 10.11707/j.1001-7488.20141223

木橡胶的动态压缩力学性能及其破坏行为

杨春梅, 吴哲, 马岩, 张亚新, 齐英杰, 李明宝

东北林业大学林业与木工机械工程技术中心哈尔滨 150040

收稿日期:2014-04-10 修回日期:2014-08-14 出版日期:2014-12-25 发布日期:2015-01-08
通讯作者: 马岩
基金资助:
中央高校基本科研业务费专项资金(DL12CB05,2572014EB04-02);国家自然科学基金项目(31170517,31200434).

Dynamic Mechanical Properties and Micro-Fracture Behavior of Wood Rubber

Yang Chunmei, Wu Zhe, Ma Yan, Zhang Yaxin, Qi Yingjie, Li Mingbao

Forestry and Woodworking Machinery Engineering Technology Center, Northeast Forestry University Harbin 150040

Received:2014-04-10 Revised:2014-08-14 Online:2014-12-25 Published:2015-01-08

摘要/Abstract

关键词: 木橡胶, 动态压缩, 霍普金森压杆, 微观损伤

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

中图分类号:

S781.7

杨春梅, 吴哲, 马岩, 张亚新, 齐英杰, 李明宝. 木橡胶的动态压缩力学性能及其破坏行为[J]. 林业科学, 2014, 50(12): 161-167.

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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木橡胶的动态压缩力学性能及其破坏行为

Dynamic Mechanical Properties and Micro-Fracture Behavior of Wood Rubber

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