正文 您当前的位置：首页》正文
| 木薯秆磷酸液化及其液化物树脂性能研究 |
| 作者： 唐贤明1 莫引优2 李文明1 王文彬1 杨秋妮1 符韵林1 * |
| 单位： （1 广西大学 林学院 南宁 530005；2 广西林业勘测设计院 南宁 530011） |
| 关键词： 木薯秆 液化 树脂化 液化率 胶合性能 |
| 分类号：TQ351.4 |
| 出版年,卷(期):页码：2014 ,45 ( 4 )： 页码：643-647 |
| 摘要： |
|
【目的】研究木薯秆磷酸液化最佳工艺条件及其液化物树脂性能，为木薯秆的开发利用提供参考。【方法】以苯酚为液化剂、磷酸为催化剂，通过单因素试验和正交试验考察液固比、催化剂添加量、液化温度、液化时间等因素对木薯秆液化反应的影响，并测定木薯秆液化物树脂的胶合性能。【结果】木薯秆磷酸液化的最佳工艺条件为：液固比5∶1，催化剂添加量13%，液化温度165 ℃，液化时间130 min；在最佳工艺条件下，木薯秆液化率为90.54%。以木薯秆液化物树脂压制3层胶合板，其平均胶合强度为0.7392 MPa，符合国家标准GB/T 9846-2004对Ⅰ类胶合板的要求（≥0.7000 MPa）。【结论】以木薯秆磷酸液化产物合成树脂制备酚醛树脂胶是可行性的。 |
|
【Objective】The optimal processing conditions for liquefaction of cassava stem under phosphoric acid and resin properties of liquefied products were studied to provide references for efficient utilization of cassava stem. 【Method】With phenol as liquefier and phosphoric acid as catalyst， the effects of phenol/cassava stem ratio， phosphoric acid concentration， temperature and time on liquefaction were investigated by single factor analysis and orthogonal experiment. Bonding strength of the resin of cassava stem liquefied product was measured. 【Result】The optimum processing parameters for liquefaction of cassava stem under phosphoric acid were phenol/cassava stem ratio of 5∶1， phosphoric acid concentration of 13%， liquefaction temperature of 165 ℃ and liquefaction time of 130 min， under which the liquefaction yield reached 90.54%. The average bonding strength of the three-layer plywood prepared by resin， cassava stem liquefied product， was 0.7392 MPa， which conformed with the requirements of GB/T 9846-2004 for typeⅠplywood （≥0.7000MPa）. 【Conclusion】Synthetic resin， obtained from cassava stem liquefied product under phosphoric acid， can be used for preparing phenol formaldehyde resin. |
| 基金项目： |
| 作者简介： |
| 参考文献： |
| 服务与反馈： |
| 【文章下载】【加入收藏】 |