A Rapid Bleaching Process for Wood Veneer of <italic style="font-style: italic">Taxodium hybrid</italic> “Zhongshanshan 302”

Jia-yao LI; Xue-yi CHEN; Jiang-tao SHI; Pei-pei CHEN; Xin-zhou WANG; Wei-dong WANG

doi:10.12326/j.2096-9694.2020180

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A Rapid Bleaching Process for Wood Veneer of Taxodium hybrid “Zhongshanshan 302”
1.College of Materials Science and Engineering，Nanjing Forestry University，Nanjing 210037，Jiangsu，China
2.Garden Nursery of Jingjiang City，Taizhou 214500，Jiangsu，China
Vol. 35, Issue 6, Pages: 62-66(2021)
DOI： 10.12326/j.2096-9694.2020180

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李珈瑶,陈雪怡,石江涛等.中山杉单板快速漂白工艺[J].木材科学与技术,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.
李珈瑶,陈雪怡,石江涛等.中山杉单板快速漂白工艺[J].木材科学与技术,2021,35(06):62-66. DOI： 10.12326/j.2096-9694.2020180.

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.

摘要

为了研究中山杉单板快速漂白工艺，采用H,2,O,2,和NH,4,HCO,3,作为漂白剂进行单因素漂白试验，以漂白单板的色差, $∆ E^{*}$ ,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=22574407&type=,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=22574402&type=,4.82600021,2.53999996,和白度差, $∆ W^{*}$ ,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=22574416&type=,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=22574413&type=,5.84200001,2.53999996,来评价漂白效果。试验结果表明，单因素条件下，H,2,O,2,质量分数、处理温度对漂白效果影响较小，NH,4,HCO,3,质量分数25%时漂白效果更好。结合极差与方差分析，筛选出适合中山杉单板快速漂白的工艺：,V,（H,2,O,2,质量分数15%）∶,V,（NH,4,HCO,3,质量分数15%）=1∶1、处理温度70 ℃、处理时间3 min，此条件下漂白试样色差值为19.6，白度差值为15.1%。研究结果证明了H,2,O,2,和NH,4,HCO,3,复配漂白剂对于中山杉单板的作用，为单板快速漂白工业化生产提供理论依据。

Abstract

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

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