会议论文

Effect of heat treatment on dimensional stability of phenolic resin impregnated poplar wood

中文

2018

1-9

第六届全国生物质材料科学与技术学术研讨会

第六届全国生物质材料科学与技术学术研讨会论文集

20151018

南京

中国林学会生物质材料科学分会

本校为其他机构

为研究高温热处理对杨木PF浸渍材尺寸稳定性的影响,对速生杨木素材和PF浸渍材进行高温热处理,系统研究杨木素材、PF浸渍材、热处理材和PF浸渍-热处理材的吸水性、线性(径向和弦向)和体积吸水膨胀率、吸湿含水率.结果表明:高温热处理可显著降低材料的吸水性、吸水膨胀率、吸湿含水率,提高尺寸稳定性.相比于素材,浸水8d后,PF浸渍材吸水量降低了17.37％,热处理材最高降低了63.8％,PF浸渍-热处理材最高降低了74.7％;PF浸渍材径向、弦向及体积吸水膨胀率分别降低14.71％、36.93％、30.19％,热处理材最高分别降低了64.99％、74.94％、72.33,PF浸渍-热处理材最高分别降低94.4％、90.61％、91.37％;PF浸...

　　The poplar wood and phenol formaldehyde(PF)impregnated wood were subjected to heat treatment at 160℃,180℃,200℃ and 220℃ for 1h to 4h.Hydroscopicity,hygroscopicity,linear(radial and tangential)and volume swelling of the control and PF impregnated wood after heat treatment were measured.The results showed that the dimensional stability can be improved considerably after heat treatment.The water absorption of PF impregnated wood was reduced by 17.37%compared with that of control group after soaking in water for eight days,and the maximum d...