1.广西森工集团股份有限公司,广西南宁 530000
2.广西国旭春天人造板有限公司,广西百色 533000
3.中国林业科学研究院木材工业研究所,北京 100091
4.广西壮族自治区林业科学研究院,广西南宁 530000
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黎小波,黄忠良,谭葆华等.含疏水结构分子对脲醛树脂胶调制黏度的控制[J].木材科学与技术,2023,37(04):65-71.
LI Xiaobo,HUANG Zhongliang,TAN Baohua,et al.Effect of Molecules Containing Hydrophobic Groups on Viscosity of Urea Formaldehyde Resin[J].Chinese Journal of Wood Science and Technology,2023,37(04):65-71.
为减缓改性脲醛树脂与面粉调配后黏度快速升高对胶合板淋胶工艺施胶均匀性的影响，本研究提出利用含疏水结构分子的乙二醇油酸酯、三油酸甘油酯和吐温-80削弱调配胶液组分间缔合作用，控制胶液黏度，并探讨含疏水结构分子对胶液黏度及其变化速率以及胶合强度的影响。结果表明，非离子型表面活性剂类含疏水结构分子的吐温-80添加量为胶液质量的1.6%时，胶液黏度由4 039 mPa·s降低至3 429 mPa·s，且在调配后0.5~5.5 h内，胶液黏度平均增加速率相比对照组降低74%。非离子型表面活性剂类含疏水结构分子的亲水端保障其在胶液体系中均匀分散，疏水端有效削弱胶液组分间缔合作用；适当添加非离子型表面活性剂类含疏水结构分子，可提高胶合板的胶合强度，但添加过量时，会降低胶合板的胶合强度。
The viscosity of the glue increased rapidly when the modified urea-formaldehyde resin combined with flour at the sprinkling process of manufacturing plywood. It significantly affects the uniformity of the adhesive layer. This study proposed a method to control the viscosity of the glue by diluting the association between the glue components with the molecules containing hydrophobic groups (ethylene glycol oleate, triolein, and Tween-80). The effects of the molecules containing hydrophobic groups on the viscosity and the change rate of the glue were discussed. Results show that when the amount of Tween-80 which was non-ionic surfactant was 1.6% of the glue mass, the viscosity of the glue decreased from 4 039 mPa·s to 3 429 mPa·s. Within 0.5~5.5 hours after mixing, the average increase rate of the glue viscosity reduced by 74% compared to the control group. The hydrophilic end of the molecules containing hydrophobic groups which were non-ionic surfactant ensures its uniform dispersion in the glue. The association between the components of the glue was effectively diluted by the hydrophobic end of the non-ionic surfactant. In addition, when the amount of non-ionic surfactant was appropriate, the bonding strength of the plywood prepared with the corresponding adhesive was higher than that of the control group. However, an excessive addition of the additive led to a decrease in the bonding strength of the plywood.
改性脲醛树脂胶黏剂黏度淋胶缔合作用非离子型表面活性剂
modified urea formaldehyde resin adhesiveviscositysprinkling adhesiveassociation interactionsnon-ionic surfactant
李晓娜, 李建章, 李炯炯. 无机添加剂改性脲醛树脂胶黏剂研究进展[J]. 林业工程学报, 2021, 6(3): 28-34.
LI X N, LI J Z, LI J J. Research progress of urea formaldehyde resin modified by inorganic additives[J]. Journal of Forestry Engineering, 2021, 6(3): 28-34.
Kelleci O, Koksal S E, Aydemir D, et al. Eco-friendly particleboards with low formaldehyde emission and enhanced mechanical properties produced with foamed urea-formaldehyde resins[J]. Journal of Cleaner Production, 2022, 379: 134785.
CAO Y, ZHANG W, YANG P, et al. Comparative investigation into the interfacial adhesion of plywood prepared by air spray atomization and roller coating[J]. European Journal of Wood and Wood Products, 2021, 79(4): 887-896.
崔启鹏, 叶春香, 杨旭, 等. 脲醛树脂胶粘剂添加剂不同配比研究[J]. 广东林业科技, 2015, 31(6): 67-70.
CUI Q P, YE C X, YANG X, et al. Study on additives ratio of urea-formaldehyde resin[J]. Guangdong Forestry Science and Technology. 2015, 31(6): 67-70.
DING R, SU C, YANG Y, et al. Effect of wheat flour on the viscosity of urea-formaldehyde adhesive[J]. International Journal of Adhesion and Adhesives, 2013, 41: 1-5.
杨洁, 刘天璐, 宋慧波, 等. 微乳液法降低含油污泥黏度[J]. 化工学报, 2016, 67(7): 2963-2969.
YANG J, LIU T L, SONG H B, et al. Micro-emulsion method for reducing viscosity of petroleum sludge[J]. CIESC Journal, 2016, 67(7): 2963-2969.
钱珊珊, 姚燕, 王子明, 等. 降低高强混凝土黏度的减水剂制备与机理研究[J]. 材料导报, 2021, 35(2): 2046-2051.
QIAN S S, YAO Y, WANG Z M, et al. Preparation and mechanism of superplasticizer for reducing the viscosity of high strength concrete [J]. Materials Reports, 2021, 35(2): 2046-2051.
吕文怡, 吴玉国, 张梦轲, 等. 曲拉通与甜菜碱复配对稠油乳化降黏的影响[J]. 辽宁石油化工大学学报, 2019, 39(3): 22-25.
LYU W Y, WU Y G, ZHANG M K, et al. The effect of Triton X100 and Betaine (BS12) compound viscosity reducer on emulsification and viscosity reduction of heavy oil[J]. Journal of Liaoning Shihua University, 2019, 39(3): 22-25.
CHEN X, WANG N, XIA S. Research progress and development trend of heavy oil emulsifying viscosity reducer: a review[J]. Petroleum Science and Technology, 2021, 39(15-16): 550-563.
熊钰, 冷傲燃, 孙业恒, 等. 水溶性分散型降黏剂降黏及微观驱油机理[J]. 油气地质与采收率, 2020, 27(5): 62-70.
XIONG Y, LENG A R, SUN Y H, et al. Study on the mechanisms of viscosity reduction and microscopic oil displacement of a water-soluble dispersed viscosity reducer[J]. Petroleum Geology and Recovery Efficiency, 2020, 27(5): 62-70.
王彦玲, 许宁, 张传保, 等. 稠油降黏剂的降黏机理研究进展[J]. 应用化工, 2021, 50(11): 2069-3073.
WANG Y L, XU N, ZHANG C B, et al. Research progress on viscosity reduction mechanism of heavy of viscosity reducer[J]. Applied Chemical Industry, 2021, 50(11): 2069-3073.
徐力峥, 李建章, 雷得定. 脲醛树脂用添加剂的研究与应用进展[J]. 林产工业, 2007, 34(2): 9-17.
XU L Z, LI J Z, LEI D D. Advances in study and application of additives for urea-formaldehyde resin adhesive[J]. Chinese Forest Products Industry, 2007, 34(2): 9-17.
朱益萍, 邱伟剑, 张四辈, 等. 竹粉填充对脲醛树脂胶黏剂性能的影响[J]. 森林与环境学报, 2016, 36(3): 277-282.
ZHU Y P, QIU WJ, ZHANG S B, et al. Effects of mixing the bamboo powder on properties of urea formaldehyde adhesive[J]. Journal of Forest and Environment, 2016, 36(3): 277-282.
潘煜怡, 马胜军, 富秀玲, 等. 脲醛树脂耐水性的研究[J]. 玻璃纤维, 2006(6): 8-12.
PAN Y Y, MA S J, FU X L, et al. Study on the water resistance of urea-formaldehyde resin[J]. Glass Fiber, 2006(6): 8-12.
JIANG S, HU M, DU G, et al. Highly branched polyurea-enhanced urea-formaldehyde resin[J]. ACS Applied Polymer Materials, 2021, 3(2): 1157-1170.
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