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Influence of various wood modifications on the properties of polyvinyl chloride/wood flour composites

机译:各种木材改性对聚氯乙烯/木粉复合材料性能的影响

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摘要

Aminosilane, melamine and acetic anhydride treated wood flour were added to polyvinyl chloride (PVC) in order to process improved PVC/wood flour composites. The influence of wood treatment on water absorption and mechanical properties were evaluated. Treatments with amino-alkyl functional oligomeric siloxane and melamine in suitable concentration as well as acetylated wood flour composites showed decreased equilibrium moisture content and reduced speed of water absorption. Tensile strength, elongation at break and unnotched impact strength were considerably improved by the aminosilane treatments. The increase in strength and elongation was mainly influenced by the chemical structure and concentration of the used aminosilanes.
机译:将氨基硅烷,三聚氰胺和乙酸酐处理过的木粉添加到聚氯乙烯(PVC)中,以加工改进的PVC /木粉复合材料。评估了木材处理对吸水率和机械性能的影响。用合适浓度的氨基烷基官能低聚硅氧烷和三聚氰胺以及乙酰化木粉复合材料进行的处理显示出降低的平衡水分含量和降低的吸水速度。氨基硅烷处理大大提高了拉伸强度,断裂伸长率和无缺口冲击强度。强度和伸长率的增加主要受到所用氨基硅烷的化学结构和浓度的影响。

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