QIN Xiang,LIU Yu*,XU Yixin,et al.Effect of microencapsulation of formaldehyde capture agents on formaldehyde emission from veneered panels[J].Journal of Forestry Engineering,2020,5(01):81-87.[doi:10.13360/j.issn.2096-1359.201903018]





Effect of microencapsulation of formaldehyde capture agents on formaldehyde emission from veneered panels
东北林业大学材料科学与工程学院,哈尔滨 150040
QIN Xiang LIU Yu* XU Yixin WU Lin HUANG Kejian HUANG Jiaqi WANG Weicong
Material Science and Engineering College, Northeast Forestry University, Harbin 150040, China
薄木饰面板 甲醛释放量 甲醛捕捉剂 微胶囊 长效控释
veneered panel formaldehyde emission formaldehyde capture agent microcapsule long-term controlled release
随着薄木饰面板在家具、装修领域中的使用量越来越大,人造板的游离甲醛释放问题也愈发引起人们关注,现有的甲醛捕捉剂一般只能在短期内发挥效果,而对人造板甲醛的长期释放控制效果并不理想。为解决人造板甲醛释放的长期性问题,以尿素为芯材、乙基纤维素为壁材制备微囊型甲醛捕捉剂,探讨不同乳化剂及芯壁比制备的微囊型甲醛捕捉剂对饰面人造板甲醛控释效果的影响。结果表明,当乳化剂为十二烷基硫酸钠、芯壁比为3:1,乳化剂用量1%、壁材质量分数3%、搅拌速度1 000 r/min时,制备出的微胶囊芯材负载效果最好,负载量达到36.24%、负载效率为8.05%。采用该微胶囊以2%的质量比与脲醛树脂胶黏剂混配进行饰面板贴面热压时,得到的薄木贴面板的甲醛释放量相比未处理饰面板降低了37.9%。经过20 d后,微胶囊对其饰面板甲醛的释放仍表现出一定的控制效果,饰面板的甲醛释放量为0.99 mg/L,仅为未处理饰面板的56.9%。说明用微囊型甲醛捕捉剂对饰面人造板进行处理不仅能够对饰面板中的甲醛进行控释,而且在长期的放置、使用过程中也能够持续发挥作用,从而达到降低室内空气中甲醛浓度的目的。
Recently, with the continuous improvement of living quality, people pay more attention on indoor decorations. Wood-based panels are widely used in the field of indoor decoration and furniture manufacturing because of their good nature characteristics and appearances. Because most wood-based panels are bonded using urea-formaldehyde resin that causes formaldehyde emission from the panels, which limits their application in the indoor environment. Due to the incomplete curing of adhesives during hot pressing, the free formaldehyde would migrate and release from inner to surface. In addition, the degradation of wood composites also produces a small amount of formaldehyde. Formaldehyde has been identified as the typical hazardous composite that causes cancer and birth defects by the world health organization. Formaldehyde is generally released slowly from the source, and new products release the greatest amount of formaldehyde in the first few months. In order to control the continuous release of formaldehyde in long term, the formaldehyde trapping agent is used during the production and in the final product. However, formaldehyde capture agents can only work in a short term. In order to reduce the potential harm of formaldehyde to human health, it is necessary to control the long-term release of formaldehyde. In this study, formaldehyde capture microcapsules with urea as a core material and ethyl cellulose as a wall material were developed and the influences of the emulsifier and wall material ratio on the formaldehyde emissions from veneered panels were investigated. The results showed that the microcapsules with the optimal morphology and high degradation efficiency could be obtained under the conditions of 1% sodium dodecyl sulfate emulsifier, 3% shell liquid, 3:1 core-shell ratio and 1 000 r/min stirring speed. The loading rate and efficiency of microcapsules reached 36.24% and 8.05%, respectively. The formaldehyde emission of microcapsule veneer was 37.9% lower than that of the control group. After exposure for 20 d, the formaldehyde emission of the tablets was still low, with the formaldehyde mass concentration of 0.99 mg/L, which was 56.9% of the control group. The microencapsulated formaldehyde trap can effectively control the short-term and long-term formaldehyde release of the panel and play an important role in the control of indoor air emission. By capturing formaldehyde for a long time, the microcapsules can effectively reduce the indoor formaldehyde content and keep the indoor formaldehyde content at a low value for a long time, to effectively prevent formaldehyde from affecting human health and maintain good indoor air quality.


[1] 李翠林, 王传娥, 王莹, 等. 居民室内甲醛污染现状调查与分析[J]. 甘肃联合大学学报(自然科学版), 2013, 27(3): 29-32. DOI:10.3969/j.issn.1672-691X.2013.03.009.
LI C L, WANG C E, WANG Y, et al. Survey and analysis on the status of indoor air formaldehyde contamination among residential apartments[J]. Journal of Gansu Lianhe University(Natural Sciences), 2013, 27(3): 29-32.
[2] WANG L F, QU F, ZHANG Y P, et al. Home environment in relation to allergic rhinitis among preschool children in Beijing, China:a cross-sectional study[J]. Building and Environment, 2015, 93: 54-63. DOI:10.1016/j.buildenv.2015.02.010.
[3] 王高超, 沈隽, 李爽. 室内装饰材料甲醛释放研究现状及发展趋势[J]. 西北林学院学报, 2014, 29(1): 188-191. DOI:10.3969/j.issn.1001-7461.2014.01.38.
WANG G C, SHEN J, LI S. Current research and development trends of the formaldehyde emission from interior decoration materials[J]. Journal of Northwest Forestry University, 2014, 29(1): 188-191.
[4] 韩书广, 刘启明. 改性脲醛树脂甲醛与尿素的摩尔比及其影响[J]. 南京林业大学学报(自然科学版), 2002, 26(3): 56-60. DOI:10.3969/j.issn.1000-2006.2002.03.015.
HAN S G, LIU Q M. The effects of final-molar ratio of UF resin modified by melamine agglutination[J]. Journal of Nanjing Forestry University(Natural Sciences Edition), 2002, 26(3): 56-60.
[5] 张晓辉, 李双石, 曹奇光, 等. 室内空气污染的危害及其防治措施研究[J]. 环境科学与管理, 2009, 34(7): 22-25. DOI:10.3969/j.issn.1673-1212.2009.07.006.
ZHANG X H, LI S S, CAO Q G, et al. Study on harm and prevention of indoor air pollution[J]. Environmental Science and Management, 2009, 34(7): 22-25.
[6] 庄晓虹, 王维宽, 马春蕾, 等. 大芯板中甲醛的释放规律及影响因素分析[J]. 环境保护科学, 2008, 34(3): 21-23. DOI:10.3969/j.issn.1004-6216.2008.03.007.
ZHUANG X H, WANG W K, MA C L, et al. Release regulation of formaldehyde in woodworking board and influencing factors analyzing[J]. Environmental Protection Science, 2008, 34(3): 21-23.
[7] 匡方舟, 刘亚兰. 建筑装饰装修中的甲醛污染及其治理方法[J]. 住宅科技, 2018, 38(4): 20-23. DOI:10.13626/j.cnki.hs.2018.04.006.
KUANG F Z, LIU Y L. Formaldehyde pollution in building decoration and its treatment method[J]. Housing Science, 2018, 38(4): 20-23.
[8] 臧鹏. 改性TiO2-活性炭纤维的制备及其吸附降解甲醛的研究[D].上海: 东华大学, 2011.
ZANG P. A study on preparation of TiO2-ACF and its adsorption and degradation properties for formaldehyde[D]. Shanghai: Donghua University, 2011.
[9] 倪守领, 刘诚, 花军. 人造板氨处理降醛法及设备设计[J]. 现代科学仪器, 2013(1): 93-96.
NI S L, LIU C, HUA J. The method and equipment design of ammonia treatment to reduce formaldehyde emission of wood based panel[J]. Modern Scientific Instruments, 2013(1): 93-96.
[10] 周定国. 添加捕捉剂降低刨花板甲醛散发量的初步研究[J]. 南京林业大学学报(自然科学版), 1990, 14(4): 68-72. DOI:10.3969/j.jssn.1000-2006.1990.04.013.
ZHOU D G. A study on reducing formaldehyde emission of particleboard by addition of chemicals as catcher[J]. Journal of Nanjing Forestry University(Natural Sciences Edition), 1990, 14(4): 68-72.
[11] 史福宝, 孙成忠. E0级刨花板甲醛捕捉剂的研制与应用[J]. 中国人造板, 2010, 17(6): 18-21. DOI:10.3969/j.issn.1673-5064.2010.06.006.
SHI F B, SUN C Z.Manufacture and application of formaldehyde scavenger in E0 grade particleboard[J]. China Wood-Based Panels, 2010, 17(6): 18-21.
[12] STEFANOWSKI B K, CURLING S F, ORMONDROYD G A. Evaluating mould colonisation and growth on MDF panels modified to sequester volatile organic compounds[J]. International Wood Products Journal, 2016, 7(4): 188-194. DOI:10.1080/20426445.2016.1216052.
[13] CHEN G C, ROWELL R M, ELLIS W D. Fungal resistance of southern pine impregnated with methyl fluorophenyl carbamates or reacted with fluorophenyl isocynates[J]. Wood & Fiber Science, 1990, 22(2): 165-172. DOI:10.1515/hfsg.1990.44.2.147.
[14] FREDERIKSEN L, ANTON K, VAN HOOGEVEST P, et al. Preparation of liposomes encapsulating water-soluble compounds using supercritical carbon dioxide[J]. Journal of Pharmaceutical Sciences, 1997, 86(8): 921-928. DOI:10.1021/js960403q.
[15] 户超, 李保国, 吴酉芝, 等. 尿素微胶囊的缓释性能试验[J]. 中国饲料, 2009(15): 38-40. DOI:10.3969/j.issn.1004-3314.2009.15.012.
HU C, LI B G, WU Y Z, et al. The trail of study on slow releasing property of urea microencapsulated[J]. China Feed, 2009(15): 38-40.
[16] 段红云. 环保型脲醛树脂胶粘剂及甲醛控释研究[D]. 北京: 北京化工大学, 2015.
DUAN H Y. The study on environment-friendly urea-formaldehyde resin adhesives and the control on formaldehyde emissions[D]. Beijing: Beijing University of Chemical Technology, 2015.


 LIU Yuansong,GUAN Mingjie*,ZHANG Zhiwei,et al.Effect of lignin modified urea-formaldehyde resin on the formaldehyde emission and bonding performance of bamboo laminated timber[J].Journal of Forestry Engineering,2017,2(01):28.[doi:10.13360/j.issn.2096-1359.2017.03.005]


收稿日期:2019-03-16 修回日期:2019-04-18
基金项目:黑龙江省自然科学基金(C2017002); 东北林业大学大学生创新创业训练计划项目(201810225001)。
更新日期/Last Update: 2019-12-10