吸声保温玉米秸秆穰板制备及性能研究
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摘要
以疏解后的玉米秸秆穰丝为基材,异氰酸酯为胶黏剂,均匀组坯后经热压制备成吸声保温玉米秸秆穰板。通过单因素试验分别探究了施胶量、热压温度板材密度、厚度对玉米秸秆穰板吸声、导热和压缩性能的影响。结果表明:综合板材的性能和生产成本,优化工艺为施胶量2%、热压温度140℃、密度0.10 g/cm3,所得板材吸声性能达到GB/T 16731—1997的Ⅲ级标准,压缩强度满足GB/T 25975—2010中的要求,属高效保温材料。
In this study,a new sound-absorbing and heat-insulating material was prepared by using corn stalks,the corn stalks were smashed into crepe,and isocyanate was used as a binder.Finally,the corn stalks were obtained by hot pressing.The effects of glue amount,hot pressing temperature,density and thickness on the thermal conductivity,sound absorption and compression properties of corn straw board were investigated by single factor experiments in this work.As a result,the performance of the integrated sheet and the production cost were as follows:the amount of glue was 2%,the hot pressing temperature was 140 ℃,and the density was 0.10 g/cm3.The sound absorption performance of the obtained board reached the Class III standard of GB/T19731—1997,and the compressive strength met the requirements in GB/T 25985—2010,and it was a highly efficient heat insulating material.
In this study,a new sound-absorbing and heat-insulating material was prepared by using corn stalks,the corn stalks were smashed into crepe,and isocyanate was used as a binder.Finally,the corn stalks were obtained by hot pressing.The effects of glue amount,hot pressing temperature,density and thickness on the thermal conductivity,sound absorption and compression properties of corn straw board were investigated by single factor experiments in this work.As a result,the performance of the integrated sheet and the production cost were as follows:the amount of glue was 2%,the hot pressing temperature was 140 ℃,and the density was 0.10 g/cm3.The sound absorption performance of the obtained board reached the Class III standard of GB/T19731—1997,and the compressive strength met the requirements in GB/T 25985—2010,and it was a highly efficient heat insulating material.
引文
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[2]Genuit K,Fiebig A.The influence of combined environmental stimuli on the evaluation of acoustical comfort:case studies carried out in an interactive simulation environment[J].International Journal of Vehicle Noise&Vibration,2007,3(2):10.
[3]余珊,王军锋,陈悦,等.轻木木材吸声性能的研究[J].林产工业,2018,45(8):33-35.
[4]朱广勇,彭立民,王军锋,等.木质穿孔板的研究现状及发展趋势[J].林产工业,2015,42(4):7-10.
[5]Ronald G,Jonathon A,and Thomas H.Acoustic Performance Prediction of Micro-Perforated Panels Using Computational Fluid Dynamics and Flmite Element Anaylysis[R].SAE Technical Paper,2013.
[6]Su C W,Yuan Q P,Huang J D,et al.The experimental research on the sound absorption coefficient of several different mytilaria laosensis veneering boards[J].Key Engineering Materials,2011,486:95-98.
[7]彭立民,梁善庆,傅峰,等.我国木质吸音材料的发展现状分析[J].木材工业,2012,26(3):29-32.
[8]孙文中.节能绿色环保建筑材料在工程中的应用[J].中国标准化,2018(18):69-70.
[9]韩鲁佳,闫巧娟,刘向阳,等.中国农作物秸秆资源及其利用现状[J].农业工程学报,2002(3):87-91.
[10]郭永伟.山西林业剩余物能源化利用前景研究[J].经济问题,2014(9):123-125.
[11]王德福,于克强,陈争光.玉米秸秆皮穰分离机械运行参数优化试验[J].农业工程学报,2013,29(21):26-32.
[12]崔曾杰,葛郁杰.吉林省玉米秸秆综合利用技术分析[J].种子科技,2017,35(12):49-50.
[13]席佳,赵荣军,费本华,等.木结构建筑的墙体组成简介[J].林产工业,2010,37(2):45-47.
[14]王振,张永益,陈友昌,等.节能建筑围护结构的节能测试评价[J].东北石油大学学报,2001,25(1):101-103.
[15]张泽平,李珠,董彦莉.建筑保温节能墙体的发展现状与展望[J].工程力学,2007(S2):121-128.
[16]Naziev Y M,Naziev D Y,Gasanov V G.Determination of the effect of variability of the thermal properties of materials when measuring thermal conductivity using steady-state thermal methods[J].Measurement Techniques,2004,47(l):73-77.
[17]刘冰,雒鹰,陈玲,等.玉米秸秆矿质塑合材料力学性能研究[J].林业机械与木工设备,2019,47(1):40-45.
[18]李学琴,雷廷宙,李翔宇,等.响应面优化生物质玉米秸秆催化液化工艺研究[J].林产工业,2017,44(7):26-30.