椴木和杨木抽提成分对胶合性能影响

个人资料整理仅限学习使用

论文题目：椴木和杨木抽提成分对胶合性能的影响

学院：材料工程学院

专业年级：材料科学与工程2005级

学号：*********

*名：***

指导教师、职称：林巧佳教授黄晓东讲师

2009年 5 月30 日

Effect of Extraction Components ofBasswood and Poplar on the Bonding Properties

College:MaterialEngineeringCollege

Specialty and Grade: Material Science and Engineering,2005

Number: 051055008

Name:WangChonggui

Advisor:Professor Lin Qiaojia LecturerHuang Xiaodong

Submitted time:May30, 2009

目录

摘要：1

A BSTRACT.2

1引言3

1.1 研究意义3

1.2国外研究现状3

1.3国内研究现状4

1.4 本课题研究内容和目标5

2实验材料与方法6

2.1 实验材料6

2.2 化学试剂6

2.3 实验仪器及设备6

2.4 实验方法7

2.4.1 杨木和椴木含水率测定7

2.4.2杨木和椴木PH值测定7

2.4.3 冷水提取抽提物的测定7

2.4.4 热水提取抽提物的测定7

2.4.5 氢氧化钠溶液提取抽提物的测定8

2.4.6 苯-醇提取抽提物的测定8

2.4.7 脲醛树脂胶黏剂制备8

2.4.8 压制胶合板8

2.4.9 试件制作及检测9

3实验结果与分析10

3.1 杨木和椴木含水率值10

3.2 杨木和椴木PH值10

3.3 冷水提取抽提物含量11

3.4热水提取抽提物含量12

3.51％氢氧化钠溶液提取抽提物含量12

3.6苯-醇提取抽提物含量13

3.7胶合板性能测试结果15

3.8正交实验胶合板结果15 4结论17

5问题与建议17

参考文献：19

致谢21

摘要：本文针对杨木和椴木胶合板胶合性能差的问题,首先测定杨木和椴木在四种抽提条件下<冷水抽提、热水抽提、1%NaOH溶液抽提、苯-醇抽提）抽提物成份的含量,确定各种抽提物含量对杨木和椴木胶合板胶合性能的影响；研制一种改性脲醛树脂胶粘剂,提高杨木和椴木胶合板胶合性能；采用正交实验方法,确定杨木和椴木胶合板最佳生产工艺。结果表Cl含量为1%、温度100℃、热压时间为<1.2 min/mm×单板厚度）时，杨木明，当固化剂NH

4

胶合板胶合强度性能最好；当固化剂NH

Cl含量为1%、温度100℃、热压时间为<1.0 min/mm

4

×单板厚度）时，椴木胶合板胶合强度性能最好。

关键词：杨木和椴木抽提物成分改性胶合性能

Abstract:In this paper, specific to the problem of glue poor performance of basswood plywood and poplar plywood, first of all,measure poplar and basswood’s extraction components in the four extractionconditions (cold water extraction, water extraction, 1% NaOH solution extraction, benzene - alcohol extraction>,to determine the effect of the content of the various extracts to poplar and basswood plywood gluing properties。 then develop a modified urea-formaldehyde resin adhesive, to improve poplar and basswood plywood gluing properties. At last use orthogonal test method to determine the best production process of the poplar and basswood plywood . The results show that, when the curing agent NH4Cl concentration of 1%, temperature 100 ℃, hot-pressing time (1.0 min / mm × board thickness>, the performance of poplar plywood bonding strength is the best。 when the curing agent NH4Cl concentration of 1%, temperature 100 ℃, hot-pressing time (1.2 min / mm × board thickness>, the performance of basswood plywood bonding strength is the best.

Key words:basswood and poplar。 extract components。 modification。 bonding performance