采用玉米淀粉为主要原料的改性水性高分子异氰酸酯胶黏剂压制15 mm稻秸秆人造板，并对影响板材性能的因素进行分析。经预试验表明，压制稻秸人造板较理想工艺为：板材密度07 g/cm3、热压温度160 ℃、热压时间15 min、热压单位压力35 MPa。结果表明：在质量分数1 %的醋酸喷洒秸秆表面，秸秆与木刨花按质量比85∶15混合，羧基改性丁苯与聚乙烯醇质量比为70∶30，主剂施胶量为25 %，异氰酸酯质量分数为3 %条件下，所压制的稻秸秆人造板的各项理化性能均能达到GB/T 4897.3—2003的标准。
Abstract
The rice straw particleboard was prepared using corn starch based polyme isocyanate adhesive, and the factors which affected the particleboard properties were investigated. The hot pressing parameters were preestablished as follows: density of particleboard 07 g/cm3, hot pressing temperature 160 ℃, hot pressing time 15 min and the unit pressure 35 MPa. The test results showed that the properties of rice straw particleboard prepared according to the following conditions (the mass ratio of rice straw to wood dust was 85∶15, the ratio of SBR/PVA was 70∶30, glue spreading was 25 %, and the PMDI addition was 3 %) could meet the requirement of GB/T 4897.3—2003.
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参考文献
[1]吴德茂．稻秸秆人造板——一种值得重视的生态建材[J]．建筑人造板，1998，4(6)：32-34．
[2]周定国，梅长彤．面向21世纪的农作物秸秆工业[J]．南京林业大学学报，2000，24（5）：1-4．
[3]吴章康，周定国．稻草原料酸碱性及稻草中密度纤维板的性能[J]．林产工业，2002，29(3)：12-14．
[4]Shi S Q, Gardner D J. Dynamic adhesive wettability of wood[J]. Wood and Fiber Science,2001,33(1):58-68.
[5]Yang H S, Kim D J, Kim H J. Rice strawwood particle composite for sound absorbing wooden construction material[J].Bioresource Technology, 2003,86:117-121.
[6]徐信武，周定国．改性异氰酸酯胶黏剂稻秸秆刨花板的研究[J].南京林业大学学报：自然科学版，2003，5(6)：26-28．
[7]Mo X,Cheng E, Wang D, et al, Physical properties of mediumdensity wheat straw particleboard using different adhesives[J]. Industry Crops and Products, 2003,18(1):47-53.
[8]周定国，张洋，徐咏兰,等.农作物秸秆人造板研究[M].北京：中国林业出版社,2008．
[9]Karr G S, Cheng E, Sun X S. Physical properties of straw board as affected by processing parameters[J]. Industry Crops and Products, 2000,12(1):19-24.
[10]潘明珠，连海兰，周定国.不同预处理方法对稻秸纤维表面化学特性及稻秸纤维板性能的影响[J]．林产工业,2006，33(4)：148-151．
[11]杜栓丽，张春燕.改性聚乙烯醇/淀粉无醛胶黏剂的研究[J].中国胶黏剂,2003，10(1)：11-13．
[12]时君友，顾继友，王垚．木材胶黏剂用酸解氧化玉米淀粉乳液[J].林业科学,2009，45(1):131-135．
基金
收稿日期：2010-02-02修回日期：2010-10-26 基金项目：国家自然科学基金项目(31070508);科技部农业转化资金项目（2010GB2B100101）作者简介：时君友(1964—)，教授。Email: jlshijunyou@yahoo.com.cn。引文格式：时君友，汤芸芸. 改性生物质玉米淀粉压制稻秸秆人造板的研究[J]. 南京林业大学学报:自然科学版,2011,35(2):127-130.
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