木塑复合包装材料在线挤出计量及计量误差研究
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摘要
目的研究高填充木塑复合材料在线挤出模压成型包装盒过程中,采用全自动计量装置计量的可行性,以及影响精度的因素。方法采用自制的全自动木塑复合包装材料在线挤出计量装置,对不同材料配方复合材料在不同挤出机转速及熔体温度条件下进行评估,并计算计量误差。结果随着木塑料复合包装材料中植物纤维含量的增加,计量稳定性变差,精度降低;相同配方条件下,挤出机的最佳挤出转速为200 r/min;熔体温度为190℃时,计量效果最佳。结论采用自制的在线挤出计量装置对高填充木塑复合包装材料进行计量是可行的,复合材料的配方、挤出机转速和加工温度都会直接、间接地影响计量精度,对特定配方通过改变工艺参数可以得到最佳的计量精度。
The work aims to study the measurement feasibility of automatic measurement setup in the process of online extrusion compression molding of packaging boxes with highly filled wood plastic composite as well as the factors influencing the accuracy. The composites made of different materials were evaluated at different extruder speeds and melt temperatures by the self-made online extrusion measurement setup for the automatic wood plastic packaging composites, and the measurement error was calculated. With the increase of plant fiber content in the wood plastic packaging composites, the measurement stability became poor and the measurement accuracy decreased. Under the same formula, the best extrusion speed of the extruder was 200 r/min. When the melt temperature was 190 ℃, the measurement effect was the best. It is feasible to measure the highly filled wood plastic packaging composites with the self-made online extrusion measurement setup. The formula, extruder speed and processing temperature of the composites will directly and indirectly affect the measurement accuracy. By changing the technological parameters of specific formula, the best measurement accuracy can be obtained.
The work aims to study the measurement feasibility of automatic measurement setup in the process of online extrusion compression molding of packaging boxes with highly filled wood plastic composite as well as the factors influencing the accuracy. The composites made of different materials were evaluated at different extruder speeds and melt temperatures by the self-made online extrusion measurement setup for the automatic wood plastic packaging composites, and the measurement error was calculated. With the increase of plant fiber content in the wood plastic packaging composites, the measurement stability became poor and the measurement accuracy decreased. Under the same formula, the best extrusion speed of the extruder was 200 r/min. When the melt temperature was 190 ℃, the measurement effect was the best. It is feasible to measure the highly filled wood plastic packaging composites with the self-made online extrusion measurement setup. The formula, extruder speed and processing temperature of the composites will directly and indirectly affect the measurement accuracy. By changing the technological parameters of specific formula, the best measurement accuracy can be obtained.
引文
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[2]宋永明,王青文.木塑复合材料流变行为研究进展[J].林业科学,2012,48(8):143—149.SONG Yong-ming,WANG Qing-wen.Research Progress on Rheological Behavior of Wood-Plastic Composite[J].Scientia Silvae Sinicae,2012,48(8):143—149.
[3]刘彬,李彬,王怀栋,等.木塑复合材料应用现状及发展趋势[J].工程塑料应用,2017,45(1):137—141.LIU Bing,LI Bing,WANG Huai-dong,et al.Application Status and Development Trend of Wood Plastic Composite[J].Engineering Plastics Application,2017,45(1):137—141.
[4]王光照,郝建秀,王伟宏.高附加值生物质复合材料研究现状[J].中国人造板,2017,24(7):11—16.WANG Guang-zhao,HAO Jian-xiu,WANG Wei-hong.Research Achievements on High Value-added Biomass Composites[J].China Wood-Based Panels,2017,24(7):11—16.
[5]李冬.塑料与传统材料在工业产品中的应用[J].塑料工业,2017,45(5):20—23.LI Dong.Application of Plastics and Traditional Materials in Industrial Product[J].China Plastics Industry,2017,45(5):20—23.
[6]朱明源,易红玲,林珩,等.木塑复合材料的力学性能、微观结构与流变性能的研究[J].塑料工业,2013,41(2):74—78.ZHU Ming-yuan,YI Hong-ling,LIN Hang,et al.Research on Mechanical Properties,Micro-structure and Rheological Properties of Wood-plastic Composites[J].China Plastics Industry,2013,41(2):74—78.
[7]李正印,王伟宏.高木材纤维含量聚丙烯基复合材料的制备及其性能[J].林业工程学报,2017,2(2):9—15.LI Zheng-yin,WANG Wei-hong.Preparation and Properties of Polypropylene Based Composites with High Wood Fibers Content[J].Journal of Forestry Engineering,2017,2(2):9—15.
[8]赵忠玉.浅谈木塑复合材料挤出加工工艺参数对成型性能的影响[J].橡塑技术与装备,2017(2):50—52.ZHAO Zhong-yu.Effect of Extrusion Process Parameters on the Molding Properties of Wood Plastic Composite Materials[J].China Rubber/Plastics Technology and Equipment,2017(2):50—52.
[9]GWON J G,LEE S Y,CHUN S J,et al.Physical and Mechanical Properties of Wood-plastic Composites Hybridized with Inorganic Fillers[J].Journal of Composite Materials,2012,46(3):301—309.
[10]ASHRAFI M,VAZIRI A,NAYEBHASHEMI H.Effect of Processing Variables and Fiber Reinforcement on the Mechanical Properties of Wood Plastic Composites[J].Journal of Reinforced Plastics&Composites,2011,30(30):1939—1945.
[11]PRISCO U.Thermal Conductivity of Flat-pressed Wood Plastic Composites at Different Temperatures and Filler Content[J].Science&Engineering of Composite Materials,2014,21(2):197—204.
[12]葛正浩,司丹鸽,张双琳.聚乙烯/秸秆粉发泡木塑复合材料的压制成型及性能[J].塑料,2015,44(4):115—118.GE Zhen-hao,SI Dan-ge,ZHANG Shuang-lin.Press Forming and Properties of Foamed Wood Plastic Composite Material of Polyethylene/Straw Flour[J].Plastic,2015,44(4):115—118.
[13]司丹鸽,葛正浩,韩啸宇,等.秸秆粉/聚乳酸生物降解木塑复合材料压制成型工艺及性能[J].塑料,2016,45(1):115—117.SI Dan-ge,GE Zhen-hao,HAN Xiao-yu,et al.Pressing Forming Process and Properties of Biodegradable Wood Plastic Composite Material of Straw Flour/PLA[J].Plastic,2016,45(1):115—117.
[14]HE C,HOU R,XUE J,et al.Performances of PP Wood-plastic Composites with Different Processing Methods[J].Transactions of the Chinese Society of Agricultural Engineering,2012,28(15):145—150.
[15]GARDNER D J,HAN Y,WANG L.Wood–plastic Composite Technology[J].Current Forestry Reports,2015,1(3):139—150.
[16]GUPTA R,NORAZIAH A,GUPTA A,et al.Overview of Simulation in Wood Plastic Composites Manufacturing[J].Indian Journal of Science&Technology,2017,10(7):1—5.