Improving durability of cross laminated timber (CLT) with borate treatment

被引：7
|
作者：
Bagheri, Sajad [1 ]
Alinejad, Mona [2 ]
Ohno, Katie [3 ]
Hasburgh, Laura [3 ]
Arango, Rachel [3 ]
Nejad, Mojgan [1 ,2 ]
机构：
[1] Michigan State Univ, Chem Engn & Mat Sci Dept, 480 Wilson Rd, E Lansing, MI 48824 USA
[2] Michigan State Univ, Dept Forestry, E Lansing, MI 48824 USA
[3] US Forest Serv, USDA, Forest Prod Lab, Madison, WI USA
来源：
JOURNAL OF WOOD SCIENCE | 2022年 / 68卷 / 01期
基金：
美国食品与农业研究所;
关键词：
Mass-timber; Borate; Durability; Flammability; Termite resistance; Decay resistance; Spray treatment; DOUGLAS-FIR; WOOD; RESISTANCE; BORON; PREDICTION;
D O I：
10.1186/s10086-022-02041-6
中图分类号：
S7 [林业];
学科分类号：
0829 ; 0907 ;
摘要：
Borate solution was used to treat two sets of Douglas-fir wood samples, one by spraying cross-laminated timbers (CLT) and another set by dip-treating wood in solutions at different retentions. A novel model was developed to explain and predict borate uptake based on dip-treatment parameters. Small-scale CLT samples were prepared using commercial emulsion polymer isocyanate (EPI) and polyurethane (PU) adhesive with dip-treated wood. The effect of adhesive and borate retention on CLT samples were evaluated through adhesion, fire, termite, and decay tests. The adhesion strength of wood was statistically unaffected by borate treatment. Statistical analysis showed that both spray- and dip-treated samples had significantly higher termite and decay resistance and fire performance than the untreated boards. Untreated CLT samples bonded with PU showed a considerably higher inherent decay and termite resistance than untreated specimens bonded with EPI adhesive.
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页数：16
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