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【答案】应助回帖
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真强必胜: 金币+2, 哇哇哇 2014-03-16 11:14:10
satanwy: 金币+300, 翻译EPI+1, ★★★★★最佳答案, 谢谢！！！ 2014-03-17 08:47:22
MOR (static bending strength or modulus of rupture) ， MOE (modulus of elastic),
It can be seen from Figure4(a) and 4(b)that the lower the concentration of the modifier, the more reasonable the MOR and MOE improvement rate of different tree height positions . At high concentrations modifier (modifier concentration of 6%), the mechanical properties at different height locations much obviously decreased. It might be that low concentration modifier is difficult to aggregate and cure in wood pores and high concentration modifying agent is easily collected in the catheters and pores in a short time , which solidified and clogged the modifier's flow to the direction of the treetop, thus affected the uniform distribution of modifiers inside the standing tree and the change rate of the MOR and MOE .It can also be seen from Figure 4 (b) and 4 (c)that with the addition of polyethylene glycol, the change rate of MOR and MOE at different height positions become more uniform and less obvious . Where in the bottom of the tree trunk and other locations ,the rate of change has no significant decrement. While the mechanical strength of the tree trunk has more significant improvement toward the treetop than the bottom after the polyethylene glycol was added to . It might be that the added polyethylene glycol, as a surfactant, can effectively diffuse the modifier inside the trunk. So it is not easy for the modifier to aggregate in the pores and catheter and cure. The upper blocked modifier diffusion promoted modifier enrichment in the upper tree trunk in the process of modification so that the change rate of MOR and MOE of greater tree height is much greater.
供你参考，一直以为树是高科技词汇，实际上好像就是树，应该没错吧！ |
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