LI Jia-yao,CHEN Xue-yi,SHI Jiang-tao,et al.A Rapid Bleaching Process for Wood Veneer of Taxodium hybrid“Zhongshanshan 302”[J].Chinese Journal of Wood Science and Technology,2021,35(06):62-66.
LI Jia-yao,CHEN Xue-yi,SHI Jiang-tao,et al.A Rapid Bleaching Process for Wood Veneer of Taxodium hybrid“Zhongshanshan 302”[J].Chinese Journal of Wood Science and Technology,2021,35(06):62-66. DOI: 10.12326/j.2096-9694.2020180.
A Rapid Bleaching Process for Wood Veneer of Taxodium hybrid “Zhongshanshan 302”
Single-factor experiment was conducted for investigating a rapid bleaching process for wood veneer of ,Taxodium hybrid, "Zhongshanshan 302". Hydrogen peroxide and ammonium bicarbonate were used as chemical bleaching agents; the degree of color difference and whiteness difference of the bleached veneer were served as evaluation indicators. The results showed that H,2,O,2, concentration and treatment temperature had less effect on bleaching performance. However, NH,4,HCO,3, concentration of 25% had a greater effect on bleaching process. Combining with range and variance analysis, the optimum rapidly bleaching process were selected as follows: the ratio of hydrogen peroxide (mass fraction was 15%) to ammonium bicarbonate (mass fraction was 15%) was 1∶1; the bleaching temperature was 70 ℃; and the treatment duration was 3 min. Under this situation, the value of color difference and whiteness difference of the bleached veneer were 19.6 and 15.1%, respectively. The results proved that the formulation of H,2,O,2, and NH,4,HCO,3, was suitably for bleaching ,Taxodium hybrid, "Zhongshanshan 302" veneer and provided a theoretical basis for rapidly bleaching process for industrial applications.
关键词
中山杉单板漂白工艺色差白度差
Keywords
veneer of Taxodium hybrid "Zhongshanshan 302"bleaching processcolor differencewhiteness difference
WU R D, WU Z H, HUANG Q T, et al. Bleaching process optimization of Liriodendron tulipifera used for furniture[J]. Journal of Nanjing Forestry University (Natural Sciences Edition), 2014, 38(3): 125-128.
CHANG D L, DONG R Z, XIE Q, et al. Bleaching wood with blue-stain during slice production[J]. Journal of Northeast Forestry University, 2012, 40(12): 90-92, 127.
LI N C, XIANG Q, XIAO S L. Study on bleaching process with a new kind of bleaching agent[J]. China Forest Products Industry, 2001, 28(2): 28-29, 35.
吴智慧. 木材漂白技术(二)[J]. 建筑人造板, 1992(3): 30-32.
刘一星. 木材视觉环境学[M]. 哈尔滨: 东北林业大学出版社, 1994.
徐行. 仪器测色在纺织工业中的应用[J]. 纺织学报, 1982, 3(12): 42-48.
XU H. Introductory description of instrumental colour measurement and its application in textile industry[J]. Journal of Textile Research, 1982, 3(12): 42-48.
Dannacher J, Schlenker W. The Mechanism of Hydrogen Peroxide Bleaching[J]. Text Chem Color, 2014, 28(11): 12-13.