电场作用时间对杨木胶合效应的初探

钱俊; 叶良明; 张文标

doi:10.19455/j.mcgy.1999.03.002

浏览量 : 0 下载量: 22 CSCD: 2

导出
分享
收藏
专辑

电场作用时间对杨木胶合效应的初探
Effect of Electric Field Action Time on Bonding Property of Poplar Wood
1. 浙江林学院
1999年第3期
DOI： 10.19455/j.mcgy.1999.03.002

扫描看全文

[1]钱俊,叶良明,张文标.电场作用时间对杨木胶合效应的初探[J].木材工业,1999(03):7-9.

Qian Jun\ Ye Liangming\ Zhang Wenbiao. Effect of Electric Field Action Time on Bonding Property of Poplar Wood[J]. China Wood Industry, 1999,(3).
[1]钱俊,叶良明,张文标.电场作用时间对杨木胶合效应的初探[J].木材工业,1999(03):7-9. DOI： 10.19455/j.mcgy.1999.03.002.

Qian Jun\ Ye Liangming\ Zhang Wenbiao. Effect of Electric Field Action Time on Bonding Property of Poplar Wood[J]. China Wood Industry, 1999,(3). DOI： 10.19455/j.mcgy.1999.03.002.

摘要

在电场作用下，通过聚醋酸乙烯乳液（ＰＶＡｃ）胶合杨木单板的试验，初步探索了电场作用时间与胶合强度的关系。结果表明：①电场作用时间对胶合强度影响极显著；②对含水率为１２％的杨木单板，使用ＰＶＡｃ（固体含量为１７％，２０℃时的粘度为６０Ｐａ·ｓ）为胶粘剂，单面涂胶量为１８５ｇ／ｍ２，在室温（１７～２４℃）加压（０４５～０８５ＭＰａ）１０ｈ，上、下垫板间３０Ｖ的电势差从加压后１～４ｈ起施加，板材胶合强度最理想。

Abstract

Based on experiment of poplar veneers bonded with PVAc in electric field,relationship between electric field action time and shearing strength between the veneers was preliminarily explored. Experiment results showed that the shearing strength was significantly affected by the time. The strength behaved the best when veneer moisture content was 12%, and 185 g/m\+2 of PVAc(content 17%,viscosity 6.0 Pas at 20 )was spread as adhesive under the following condition:room temperature (1724 ),0.450.85 MPa of pressure for 10 h, 30V of electric potential difference among pole plates initiated after 14 h pressing.\=