建筑模板用不同配比高密度聚乙烯/木塑材料性能表征
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摘要
选择竹粉与高密度聚乙烯(HDPE)作为原料,通过加入复合阻燃剂的方法并对其实施共混挤出制备得到木塑材料,之后对该材料的吸水性、力学强度与阻燃性开展实验分析。结果表明,随木塑材料的竹粉添加量上升,复合材料的拉伸强度不断增大,伸长率减小。将HDPE、竹粉与马来酸酐接枝聚乙烯(PE-g-MAH)质量比设定在50/45/5的比例时,材料获得良好的综合力学性能。当木粉的添加量上升后,HDPE/木塑材料获得了更高的吸水率。当PE-gMAH添加量上升,材料力学性能提高。复合型阻燃剂不会使该材料的力学性能发生变化。在没有加入阻燃剂的情况下,测试HDPE/竹粉材料的极限氧指数(LOI)为21. 26%。当膨胀石墨的添加量增加后,HDPE/木塑材料的LOI也明显升高。
Taking bamboo powder and high-density polyethylene( HDPE) as raw materials,the wood plastic materials were prepared by mixing extrusion with composite flame retardant. And then the water absorption,mechanical strength and flame retardancy of the materials were tested and analyzed. The results show that the tensile strength of HDPE increases with the increasing contents of bamboo powder and the elongation decreases. When the mass ratio of HDPE,bamboo powder and PE-g-MAH is 50 ∶ 45 ∶ 5,the material could obtain good comprehensive mechanical properties. When the content of wood powder increases,HDPE/wood plastic material could obtain higher water absorption rate. When the addition amount of PE-gMAH increases,the mechanical properties of the material could be improved. Composite flame retardants could not change the mechanical properties of the material. Without the addition of flame retardant,the LOI of HDPE/bamboo powders is 21. 26%. When the amount of expanded graphite increases,the LOI of HEPE/wood plastic material also increases significantly.
Taking bamboo powder and high-density polyethylene( HDPE) as raw materials,the wood plastic materials were prepared by mixing extrusion with composite flame retardant. And then the water absorption,mechanical strength and flame retardancy of the materials were tested and analyzed. The results show that the tensile strength of HDPE increases with the increasing contents of bamboo powder and the elongation decreases. When the mass ratio of HDPE,bamboo powder and PE-g-MAH is 50 ∶ 45 ∶ 5,the material could obtain good comprehensive mechanical properties. When the content of wood powder increases,HDPE/wood plastic material could obtain higher water absorption rate. When the addition amount of PE-gMAH increases,the mechanical properties of the material could be improved. Composite flame retardants could not change the mechanical properties of the material. Without the addition of flame retardant,the LOI of HDPE/bamboo powders is 21. 26%. When the amount of expanded graphite increases,the LOI of HEPE/wood plastic material also increases significantly.
引文
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[2]邸明伟,尤来,赵婷玉,等.聚乙烯木塑复合材料的异氰酸酯表面处理与胶接[J].建筑材料学报,2016,19(1):94-99.
[3]王阳,路琴,王清清,等.不同发泡剂对高密度聚乙烯/麦秸秆木塑复合材料性能的影响[J].中国塑料,2017,31(7):35-39.
[4]郭丹,赵星,黄科,等.电子束辐射对农作物秸秆粉/聚乙烯木塑复合材料结构与性能的影响[J].高分子材料科学与工程,2016,32(6):63-67.
[5]曹金星,张玲,张云灿,等.聚丙烯基木塑复合材料增韧改性研究进展[J].中国塑料,2017,31(2):1-7.
[6]朱德钦,郑守扬,生瑜.协效剂对膨胀阻燃聚丙烯基木塑复合材料的阻燃增效研究[J].应用化学,2017,34(2):195-203.
[7]张博,房轶群,宋永明,等.尼龙及增容剂对聚氯乙烯木塑复合材料性能的影响[J].东北林业大学学报,2017,45(6):73-78.
[8]生瑜,郑守扬,朱德钦.阻燃型聚丙烯基木塑复合材料的正交优化[J].东北林业大学学报,2017,45(4):88-93.
[9]焦学健,李丽君,董抒华,等.聚丙烯/麦秸秆木塑复合材料的力学性能[J].工程塑料应用,2017,45(12):25-28.
[10]王艳玲,戚嵘嵘,刘林波,等.聚乳酸基木塑复合材料的相容性研究[J].工程塑料应用,2008,36(1):20-23.
[11]斯泽泽,曹积微,盛清泉,等.可生物降解木塑复合材料的国内外研究进展[J].安徽农业科学,2016(2):101-103.
[12]张敬礼,周文君,王雪芹,等.新型阻燃木塑复合材料的制备及其性能研究[J].塑料工业,2014,42(1):112-117.
[13]王林,付锦锋,郭少华,等.注塑级低烟无卤阻燃木塑复合材料的制备与性能研究[J].塑料工业,2012,40(9):104-107.