[1]陆全济,李家宁*,李民,等. 树脂浓度对改性橡胶木尺寸稳定性和硬度的影响[J].西北林学院学报,2017,32(6):259-263.[doi:10.3969/j.issn.1001-7461.2017.06.41]
　LU Quan-ji,LI Jia-ning*,LI Min,et al. Effect of Resin Concentration on Dimensional Stability and Surface Hardness of Impregnated Rubber Wood[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2017,32(6):259-263.[doi:10.3969/j.issn.1001-7461.2017.06.41]
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 树脂浓度对改性橡胶木尺寸稳定性和硬度的影响()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第32卷
期数:
2017年第6期
页码:
259-263
栏目:
出版日期:
2017-11-30

文章信息/Info

Title:
 Effect of Resin Concentration on Dimensional Stability and Surface Hardness of Impregnated Rubber Wood
文章编号:
1001-7461(2017)06-0259-05
作者:
 陆全济; 李家宁*; 李民; 蒋汇川; 李晓文; 秦韶山
 （中国热带农业科学院 橡胶研究所，国家重要热带作物工程技术研究中心，海南 儋州 571737）
Author(s):
 LU Quan-ji; LI Jia-ning*; LI Min; JIANG Hui-chuan; LI Xiao-wen; QIN Shao-shan
 (Rubber Research Institute,CATAS;Important Tropical Crops,the State Engineering Research Center,Danzhou,Hainan 571737,China)
关键词:
 ; 脲醛树脂; 橡胶木; 尺寸稳定性; 硬度
Keywords:
 ; urea-formaldehyde resin;  rubber wood;  dimensional stability;  surface hardness
分类号:
S781.31
DOI:
10.3969/j.issn.1001-7461.2017.06.41
文献标志码:
A
摘要:
 为改善橡胶木的尺寸稳定性和硬度，采用自制低分子量脲醛树脂，真空加压浸注橡胶木，分析树脂浓度对改性橡胶木尺寸稳定性和硬度的影响。结果表明，处理材尺寸稳定性随着树脂处理浓度增大而明显改善，与未处理材对比，当树脂浓度分别为10%、20%、30%和40%时，处理试材含水率分别降低了22.3%、24.1%、27.7%和33.9%（温度20℃，湿度65%），体积干缩率分别降低了33.3%、33.3%、35.1%和35.1%，抗干缩率分别改善了29.7%、33.2%、36.9%和34.4%；同样浸注工艺条件下，当树脂浓度为10%、20%、30%时，处理材宽度耐热尺寸稳定性（收缩率）分别降低了51.3%、62.0%和65.3%，耐湿尺寸稳定性（膨胀率）分别降低了27.5%、50.0%和58.8%；处理材表面硬度随着树脂浓度增大而明显提高，与未处理材对比，弦面硬度分别提高了14.7%、39.5%、64.6%和51.5%，径面硬度分别提高了10.8%、36.4%、68.2%和91.8%，端面硬度分别提高了22.4%、50.0%、71.9%和80.6%。
Abstract:
 To improve the dimensional stability and surface hardness of rubber wood,urea-formaldehyde resin with low formaldehyde content was impregnated into rubber wood through a vacuum and pressure process.The properties of rubber wood which included equilibrium moisture content,dry shrinkage rate,anti-shrink efficiency,stability resistance to heat and wet and surface hardness were investigated.The results showed that the dimensional stability of treated samples increased with the increase of resin concentration.The equilibrium moisture contents of treated samples reduced by 22.3%,24.1%,27.7%,and 33.9% after impregnating urea-formaldehyde resin with concentrations of 10%,20%,30%,and 40%,respectively.Volume shrinkage rate reduced by 33.3%,33.3%,35.1%,and 35.1%,respectively.Anti-shrink efficiency reduced by 29.7%,33.2%,36.9,and 34.4%,respectively.Dimensional stability resistance to heat reduced by 51.3%,62.0,and 65.3%,respectively.Dimensional stability resistance to wet decreased by 27.5%,50.0%,and 58.8%,respectively with the resin treated concentrations of were 10%,20%,and 30% respectively.The surface hardness of treated samples increased with the increase of the resin concentration.When the resin concentrations were 10%,20%,30% and 40%,respectively,the surface hardness increased by 14.7%,39.5%,64.6%,and 51.5%,for tangential section,the increments were 10.8%,36.4%,68.2%,and 91.8% for radial section,the increments were 22.4%,50.0%,71.9% and 80.6% for cross section.

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备注/Memo

备注/Memo:
 收稿日期：2017-04-07修回日期：2017-04-27
基金项目：海南省重点科技计划项目（ZDYF2016022）；海南省自然科学基金(317280)。
作者简介：陆全济，男，硕士，助理研究员，研究方向：木材改性。E-mail:luquanji@163.com
*通信作者：李家宁，男，博士，副研究员，研究方向：木材改性。E-mail:Ljn206@163.com
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