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Position: Home > Articles > Dynamic Mechanical Properties and Micro-Fracture Behavior of Wood Rubber Scientia Silvae Sinicae 2014,50 (12) 161-167

木橡胶的动态压缩力学性能及其破坏行为

作  者:
杨春梅;吴哲;马岩;张亚新;齐英杰;李明宝
单  位:
东北林业大学林业与木工机械工程技术中心
关键词:
木橡胶;动态压缩;霍普金森压杆;微观损伤
摘  要:
我国古人知道木材细胞具有非常好的抗压性,建造房屋时通常利用木或竹等弹性支撑材料进行减振和缓振。随着橡胶和塑料的诞生,现在人们基本用人造橡胶和塑料泡沫来实现这些功能,但在冲击振动较大的机械设备减振中,人造橡胶和塑料泡沫还达不到使用要求。为了满足机械领域的实际需求,提高材料的冲击吸能效果,马岩(2003)提出了木橡胶的概念。木橡胶主要由胶和木纤维构成,是通过胶将木纤维黏合在一起而形成的一种复合材料
译  名:
Dynamic Mechanical Properties and Micro-Fracture Behavior of Wood Rubber
作  者:
Yang Chunmei;Wu Zhe;Ma Yan;Zhang Yaxin;Qi Yingjie;Li Mingbao;Forestry and Woodworking Machinery Engineering Technology Center,Northeast Forestry University;
关键词:
wood rubber;;dynamic compression;;Hopkinson pressure bar;;microscopic damage
摘  要:
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.

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