Modification of larch wood by intensive microwave irradiation

落叶松木头被微波照耀在不同绚烂的紧张和对待的持续时间下面对待。和 un-treatedfor 比较的对待微波的木头标本在压力容器走水路被使妊娠然后由 SEM 为渗透，机械性能和微观结构变化测试了在落叶松木头上学习微波处理的修正表演。结果证明没有破裂(粗腐殖质) 的模量和弹性(MOE ) 的模量的显著减少，在微波处理的合适的条件下面，落叶松木头的渗透被改进。光线的实质和某坑膜被破裂，并且微小的裂缝在细胞壁被形成。在细胞壁的微小的裂缝的形成是服务人造气体和液体和这的隧道贡献改进木头的渗透。

Dynamic-mechanical analysis and SEM morphology of wood flour/polypropylene composites

A study was conducted to investigate the effects of compatibilizers, including Maleic anhydride grafted polypropylene （MA-PP） and maleic anhydride grafted ethylene-propylene-diene copolymer （MA-EPDM）, on wood-flour/polypropylene （WF/PP） composites. WF/PP composites were prepared by direct extrusion profiles using a twin-screw/single-screw extruder system. DMA analysis showed that the loss factor of composites decreased and the storage modulus improved in the presence of MA-PP, which indicated much better interfacial adhesion between the PP matrix and wood flour filler than in the absence of compatibilizer. Morphological feature based on SEM observation showed that MA-PP and MA-EPDM improved the dispersion of the wood particles in the plastic matrix. MA-EPDM is a soft segment, although it improved the interfacial adhesion, storage modulus decreases with adding of MA-EPDM. As compatibilizer of wood-flour/polypropylene composites, both DMA analysis and SEM feature proved that MA-PP was superior to MA-EPDM.

Effect of maleic anhydride grafted styrene-ethylene-butylene-styrene （MA-SEBS） on impact fracture behavior of polypropylene / wood fiber composites

MA-SEBS 作为 compatibilizer；影响修饰词被合并到聚丙烯 / 木头纤维(PP/WF ) 提高接口粘附；影响力量合成。PP/WF composites 的影响破裂行为上的 MA-SEBS 内容的效果被学习。有 8% MA-SEBS 的 composites 的影响性质到达了最大的价值。并且到 10% 的 MA-SEBS 内容的进一步的增加没改进破裂坚韧，但是由直接存储器存取分析改进 composites 的僵硬。这被归因于改进 PP/WF 粘附。因为 MA-SEBS 内容是超过 8% ， PP 的分子相互作用；WF 被期望到比更低的 MA-SEBS 强壮的大部分。扫描电子显微镜学(SEM ) 被执行分析影响破裂表面；为木头表面显示出一种更强壮的亲密关系。