预处理对冀北黑桦木材干燥特性影响
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摘要
采用百度试验法研究了氯化钠和热水预处理对黑桦木材干燥特性的影响。结果表明:预处理对黑桦木材干燥缺陷和干缩特性有影响,对干燥速度基本无影响,经氯化钠处理的黑桦木材对各项性能改善效果更好。未处理材、热水处理材、氯化钠处理材的初期开裂等级均为1级;截面变形等级分别为3级、1级、1级;瓦弯变形分别为1.62mm、0.87mm、0.43mm;氯化钠处理黑桦木材的平均体积干缩率较未处理黑桦木材降低了20.83%,并且差异干缩最小。根据干燥特性相关数据,初步拟定了25-30mm厚黑桦木材干燥基准。
Drying characteristics of sodium chloride and hot water-treated betula davurical wood of the influence were investigated using the 100℃test method.The results showed that pretreatment affected the drying defects and shrinkage characteristics of wood,but it had no effect on the drying rate.The betula davurical wood treated with sodium chloride had a better effect on each performance.The initial cracking grades of unprocessed wood,hot water treated wood and sodium chloride treated wood were all Grade 1;the cross-sectional deformation was Grade 3,1 and 1;tile bending deformation were 1.62 mm and 0.87 mm and 0.43 mm;the average volume shrinkage of sodium chloride treated betula davurical wood compared with untreated wood was decreased by 20.83%,and the difference shrinkage was minimal.According to the drying characteristics of the relevant data,the initial development of the 25-30 mm thick black birch wood drying standard.
Drying characteristics of sodium chloride and hot water-treated betula davurical wood of the influence were investigated using the 100℃test method.The results showed that pretreatment affected the drying defects and shrinkage characteristics of wood,but it had no effect on the drying rate.The betula davurical wood treated with sodium chloride had a better effect on each performance.The initial cracking grades of unprocessed wood,hot water treated wood and sodium chloride treated wood were all Grade 1;the cross-sectional deformation was Grade 3,1 and 1;tile bending deformation were 1.62 mm and 0.87 mm and 0.43 mm;the average volume shrinkage of sodium chloride treated betula davurical wood compared with untreated wood was decreased by 20.83%,and the difference shrinkage was minimal.According to the drying characteristics of the relevant data,the initial development of the 25-30 mm thick black birch wood drying standard.
引文
[1]顾炼百.木材加工工艺学[M].北京:中国林业出版社,2003:246-248.
[2]顾炼百.木材干燥理论在木材加工技术中的应用分析[J].南京林业大学学报:自然科学版,2008,32(5):27-31.
[3]张新宇,孙照斌,李星,等.银腺杨木材干燥特性初步研究[J].林业机械与木工设备,2017,45(09):31-34
[4]郑万钧.中国树木志:第2卷[M].北京:中国林业出版社,1985:2113-2148.
[5]杨亮庆,刘一星,蔡英春.氯化钠溶液预处理枫桦原木圆盘的干燥特性研究[J].西部林业科学,2013,42(02):20-25.
[6]杨文斌,林金国,郑建财.蒸煮工艺对木材干燥的影响[J].林业科技开发,1996,10(2):25-27.
[7]邢靖晨,于丽丽,马晓军.加压热水预处理温度对毛白杨木材结构及酶解效果的影响[J].生物质化学工程,2017,51(05):36-40.
[8]何清慧.木材干燥基准简易确定法一百度试验法[J].木材工业,1998,12(6):39-41.
[9]邱炳发,符韵林,蒙好生,等.擎天树木材干燥特性研究[J].江西农业大学学报,2011,33(4):738-742.
[10]LY/T 1068-2012,锯材窑干工艺规程[S].
[11]徐有明.木材学[M].北京:中国林业出版社,2006.
[12]王金满,刘一星,戴澄月.抽提物对木材渗透性影响的研究[J].东北林业大学报,1991,19(3):41-47.
[13]杨亮庆.枫桦圆盘预处理及干燥特性研究[D].哈尔滨:东北林业大学,2011.
[2]顾炼百.木材干燥理论在木材加工技术中的应用分析[J].南京林业大学学报:自然科学版,2008,32(5):27-31.
[3]张新宇,孙照斌,李星,等.银腺杨木材干燥特性初步研究[J].林业机械与木工设备,2017,45(09):31-34
[4]郑万钧.中国树木志:第2卷[M].北京:中国林业出版社,1985:2113-2148.
[5]杨亮庆,刘一星,蔡英春.氯化钠溶液预处理枫桦原木圆盘的干燥特性研究[J].西部林业科学,2013,42(02):20-25.
[6]杨文斌,林金国,郑建财.蒸煮工艺对木材干燥的影响[J].林业科技开发,1996,10(2):25-27.
[7]邢靖晨,于丽丽,马晓军.加压热水预处理温度对毛白杨木材结构及酶解效果的影响[J].生物质化学工程,2017,51(05):36-40.
[8]何清慧.木材干燥基准简易确定法一百度试验法[J].木材工业,1998,12(6):39-41.
[9]邱炳发,符韵林,蒙好生,等.擎天树木材干燥特性研究[J].江西农业大学学报,2011,33(4):738-742.
[10]LY/T 1068-2012,锯材窑干工艺规程[S].
[11]徐有明.木材学[M].北京:中国林业出版社,2006.
[12]王金满,刘一星,戴澄月.抽提物对木材渗透性影响的研究[J].东北林业大学报,1991,19(3):41-47.
[13]杨亮庆.枫桦圆盘预处理及干燥特性研究[D].哈尔滨:东北林业大学,2011.