氟虫腈防白蚁胶合板的制备及性能评价
Preparation and Performance Evaluation of Fipronil-Treated Plywood
- 2026年40卷第4期 页码:77-83
DOI: 10.12326/j.2096-9694.2026021
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1.安蔚优环境科技(上海)有限公司,北京 100010
2.中国林业科学研究院木材工业研究所,北京 100091
收稿:2026-02-02,
修回:2026-07-13,
录用:2026-09-20,
纸质出版:2026-07-30
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我国40%以上的区域有白蚁分布,其对人造板制品的使用安全构成潜在威胁,开发防白蚁人造板成为应对措施之一。研究以质量浓度为25 g/L氟虫腈乳油为防白蚁药剂,将其添加到脲醛树脂胶黏剂中,分别在试验室和工厂中制备不同载药量的杨木(
Populus
spp.)、桉木(
Eucalyptus
spp.)胶合板,评价胶合板的防白蚁性能。结果显示:氟虫腈在最高载药量(10.0 g/m³)时,其对胶合板胶合强度无明显影响。室内防白蚁试验结果表明,当氟虫腈载药量为5.0 g/m³时,除采用厚度为1.7 mm杨木单板制备的胶合板试样外,其余试样白蚁蛀蚀完好值均大于9.0;4.5年室外防白蚁试验结果显示,当氟虫腈载药量为10.0 g/m³时,不同厚度单板制备胶合板的白蚁蛀蚀完好值均不低于6.0。采用氟虫腈与胶黏剂混合法制备胶合板时,建议使用氟虫腈的有效成分在胶黏剂体系中的含量(质量比)来表示药剂水平。在本试验条件下制备的杨木和桉木胶合板,在GB/T 27651—2023《防腐木材的使用分类和要求》中C3.1(即不接触土壤、表面有保护的户外)等级的环境中使用时,氟虫腈的有效成分在胶黏剂体系中的含量不宜低于100 mg/kg。研究为开发防白蚁人造板提供参考。
Termites occur across more than 40% of China's land area and pose a potential threat to the service safety and durability of wood-based panels. To develop termite-resistant plywood
a 25 g/L fipronil emulsifiable concentrate wa
s incorporated into the adhesive system
and poplar and eucalyptus plywood with different fipronil loadings were manufactured at both laboratory and factory scales. The effects of fipronil addition on termite resistance was evaluated through laboratory and long-term above-ground outdoor exposure tests. The results showed that fipronil at the highest loading investigated (10 g/m³) had no significant adverse effect on the bonding strength of the plywood. In the laboratory termite test
at a fipronil loading of 5 g/m³
the termite reistance rating of all plywood specimens exceeded 9.0
except for poplar plywood manufactured from 1.7-mm-thick veneers. After 4.5 years of above-ground outdoor exposure
plywood manufactured with different veneer thicknesses exhibited termite reistance rating not less than 6.0 at a fipronil loading of 10 g/m³. When plywood is manufactured through the co-blending process of fipronil and adhesive
it is proposed that the preservative treatment level be defined by the mass fraction of fipronil active ingredient in the adhesive system. The developed fipronil-containing plywood is suitable for service conditions corresponding to use category C3.1 specified in GB/T 27651—2023
Use category and requirements for preservative-treated wood
namely protected outdoor environments without ground contact. For such applications
the fipronil active ingredient content in the adhesive should be no lower than 100 mg/kg. These findings provide a technical basis for the development and application of termite-resistant wood-based panels.
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