| 三种杨木的pH值、缓冲容量及其对脲醛树脂胶固化时间的影响 |
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| 引用本文： | 黄金田,郑宏奎,高晓霞,李宏林.三种杨木的pH值、缓冲容量及其对脲醛树脂胶固化时间的影响[J].四川农业大学学报,1998,16(1):150-153. |
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| 作者姓名： | 黄金田 郑宏奎 高晓霞 李宏林 |
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| 作者单位： | 1. 内蒙古林学院林产工业系,呼和浩特010019
2. 内蒙古大兴安岭林管局 |
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| 摘 要： | 本文实测了内蒙古河套地区群众杨、新疆杨及内蒙古呼和浩特郊区小叶杨木材ｐＨ值，缓冲容量及脲醛树脂固化时间，从理论上分析三种杨木的酸碱性质对胶合性能的影响。结果表明，三种杨木木材均呈弱酸性，ｐＨ值为５３０～６３３，酸性接近。三种杨木木材总缓冲容量范围为０２８２～０２９６ｍｍｏｌ，其中酸缓冲容量为０００７～００４６ｍｍｏｌ，碱缓冲容量为０２５０～０２７５ｍｍｏｌ。脲醛树脂胶的固化时间随三种杨木的ｐＨ值和缓冲容量的增加而增长。
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| 关 键 词： | pH值 缓冲容量 固化时间 脲醛树脂胶 |
THE pH DATA BUFFER CAPACITY OF THREE POPLAR AND THEIR EFFECTS ON THE SETTING TIME OF UF RESIN |
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| Huang Jintian,Zheng Hongkui,Gao Xiaoxia,Li Honglin.THE pH DATA BUFFER CAPACITY OF THREE POPLAR AND THEIR EFFECTS ON THE SETTING TIME OF UF RESIN[J].Journal of Sichuan Agricultural University,1998,16(1):150-153. |
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| Authors: | Huang Jintian Zheng Hongkui Gao Xiaoxia Li Honglin |
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| Abstract: | We have measured the pH data, buffer capacity and setting time of UF resin of mass poplar, xinjian poplar growing in lnnermongloia. heta district and little loof poplar growing in the shirt of Huhehot. and analvsed the effects on the bindingproperty. caused by their acidity and basicity. The results show that they are all weakly acidic. the pH data ranges from 5 30～6 33. The araaioty is near. The general buffer capacity range of the three kinds of wood is 0 007～0 046 mmol. individucellvacid buffer capacity is between 0 007～0 046 mmol. basiccapaaty 0 25～0 275 mmol. The increase in setting time of UF resin is accompanied by a increase of the buffer capacity oftyd three poplars. |
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| Keywords: | pH DATA BUFFER AMORRIT SETLING TIME OF ADHESIVE VF RESIN |
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