1.中国林业科学研究院木材工业研究所，北京 100091
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苏莹莹,孙柏玲,柴宇博等.三聚氰胺-尿素-乙二醛树脂合成及其改性杨木物理力学性能[J].木材科学与技术,2022,36(05):56-62.
SU Ying-ying,SUN Bai-ling,CHAI Yu-bo,et al.Preparation of Melamine-Urea-Glyoxal (MUG) Resin and Properties of MUG Modified Poplar[J].Chinese Journal of Wood Science and Technology,2022,36(05):56-62.
以乙二醛替代甲醛合成木材浸渍改性用三聚氰胺-尿素-乙二醛（melamine-urea-glyoxal，MUG）树脂，通过对不同温度、pH值、原料配比条件下合成的MUG树脂性能进行分析，优选出较佳的合成工艺，并用优化工艺合成的MUG树脂对杨木进行改性。结果表明：当反应pH值在4~5，反应温度为65 ℃，M、U、G量比为0.08∶0.40∶1.00时，合成的MUG树脂性能较佳，黏度为15.01 s，固体含量为49.89%，水混合性大于10，储存时间大于90 d。质谱和红外光谱分析结果表明三聚氰胺、尿素和乙二醛三者之间发生了化学反应，并且合成产物主要为低聚物，相对分子质量小于600；同时热分析结果显示，90 ℃之后树脂开始固化，并在169 ℃处出现了明显热固化吸热峰。与未处理材相比，当MUG树脂质量分数为20%时，改性杨木的抗弯强度和弹性模量的增幅最大，分别为17.5%和18.5%。,2
In this study, melamine-urea-glyoxal (MUG) resin was synthesized by replacing formaldehyde with glyoxal. The synthesis of MUG was used to modify poplar wood. To achieve optimized synthesis condition, MUG resin was synthesized under different temperatures, pH values, and mole ratios. The performance of each synthesis was analyzed. The results showed that when the reaction pH value was 4~5, the reaction temperature was 65 ℃, and the molar ratio of melamine-urea-glyoxal was 0.08∶0.40∶1.00, the performance of the synthesized MUG resin performed optimally. The resin viscosity was 15.01s, the solid content was 49.89%, the water miscibility was greater than 10, and the storage time was greater than 90 days. Through mass spectrometry and infrared spectroscopy, it was found that the chemical reactions occurred between melamine, urea and glyoxal, and the synthesized products were mainly oligomers with relative molecular mass less than 600. According to TG-DSC analysis, the resin began to cure after 90 ℃. An obvious thermal curing endothermic peak appeared at 169 ℃. Compared with untreated wood, when the mass fraction of MUG resin was 20%, the modulus of ruptures (MOR) and modulus of elasticity (MOE) were increased by 17.5% and 18.5%, respectively.
杨木改性三聚氰胺-尿素-乙二醛（MUG）树脂合成工艺物理力学性能
poplar modificationmelamine-urea-glyoxal resinsynthetic processphysical and mechanical properties
Hill C. Wood modification: chemical, thermal and other process [M]. England: Wiley Series in Renewable Resources, 2006: 150-154.
Ashaari Z, Lee S H, Zahali M R. Performance of compreg laminated bamboo/wood hybrid using phenolic-resin-treated strips as core layer[J]. European Journal of Wood Product, 2016, 74(4): 621-624. DOI: 10.1007/s00107-016-1027-0http://dx.doi.org/10.1007/s00107-016-1027-0.
QIN Y, LONG D, LI J. Research Progress in the Chemical Modification of Eucalyptus[J]. Materials Science and Engineering, 2019, 677(2): 022114. DOI: 10.1088/1757-899X/677/2/022114http://dx.doi.org/10.1088/1757-899X/677/2/022114.
LIU K, SU C Q, MA W W, et al. Free formaldehyde reduction in urea-formaldehyde resin adhesive: Modifier addition effect and physicochemical property characterization[J]. BioResources, 2020, 15(2): 2339-2355.
XI X, LIAO J, Pizzi A, et al. 5-Hydroxymethyl furfural modified melamine glyoxal resin [J]. The Journal of Adhesion, 2020, 96(13). DOI: 10.1080/00218464.2018.1561291http://dx.doi.org/10.1080/00218464.2018.1561291.
Glomb M, Lang G. Isolation and characterization of Glyoxal-Arginine modifications [J]. International Congress Series, 2002, 1245: 377-378. DOI: 10.1016/S0531-5131(02)00965-2http://dx.doi.org/10.1016/S0531-5131(02)00965-2.
Younesi-Kordkheili H, Pizzi A. Some of physical and mechanical properties of particleboard panels bonded with phenol-lignin-glyoxal resin[J]. The Journal of Adhesion, 2019, 69 (16): 1385-1395. DOI: org/10.1080/00218464.2019.1600405http://dx.doi.org/org/10.1080/00218464.2019.1600405.
邓书端, 杜官本, 汪进. 乙二醛-尿素树脂的合成、结构与性能研究[J]. 中国胶粘剂, 2014, 23(3): 25-29, 41. DOI:10.13416/j.ca.2014.03.007http://dx.doi.org/10.13416/j.ca.2014.03.007.
阚雨菲, 阚浩峰, 姜也, 等. 尿素-乙二醛树脂的优化合成及其对大豆胶黏剂的改性[J]. 林业工程学报, 2020, 5(5): 69-75.
KAN Y F, KAN H F, JIANG Y, et al. Optimal synthesis of urea-glyoxal resin and its crosslinking modification on soybean-based wood adhesive[J]. Journal of Forestry Engineering, 2020, 5(5): 69-75.
DENG S D, Pizzi A, DU G B, et al. Synthesis, structure characterization and application of melamine-glyoxal adhesive resins[J]. European Journal of Wood and Wood Products, 2018, 76(1): 283-296.
DENG S D, DU G B, LI X H, et al. Performance, reaction mechanism, and characterization of glyoxal-monomethylol urea (G-MMU) resin[J]. Industrial & Engineering Chemistry Research, 2014, 53(13): 5421-5431.
胡极航, 刘君良, 范书桐. 乙二醛-尿素树脂的合成及橡胶木改性应用[J]. 木材工业, 2020, 34(2): 6-9.
HU J H, LIU J L, FAN S T. Synthesis of glyoxal-urea(GU) resin and its application in rubberwood modification[J]. China Wood Industry, 2020, 34(2): 6-9.
官仕龙, 李代华, 刘攀攀, 等. 脲醛-三聚氰胺甲醛复合树脂胶粘剂的研制[J]. 武汉工程大学学报, 2008, 30(4): 12-14, 19.
GUAN S L, LI D H, LIU P P, et al. Synthesis of urea-formaldehyde/melamine-formaldehyde composite resin adhesive[J]. Journal of Wuhan Institute of Technology, 2008, 30(4): 12-14, 19.
席雪冬, 雷洪, 杜官本, 等. 高质量分数甲醛增强冷固型三聚氰胺-尿素-甲醛树脂性能[J]. 浙江农林大学学报, 2016, 33(2): 300-305.
XI X D, LEI H, DU G B, et al. Cold-setting MUF resin adhesive prepared with concentrated fomaldehyde[J]. Journal of Zhejiang A ＆ F University, 2016, 33(2): 300-305.
平立娟, 孙柏玲, 邵亮亮, 等. 三聚氰胺-尿素-乙二醛树脂改性对橡胶木物理力学性能的影响[J]. 木材科学与技术, 2021, 35(6): 38-43.
PING L J, SUN B L, SHAO L L, et al. Effect of melamine-urea-glyoxal resin on physical and mechanical properties of rubberwood[J]. Chinese Journal of Wood Science and Technology, 2021, 35(6): 38-43.
Kan Y F, Sun B, Kan H F, et al. Preparation and characterization of a melamine-urea-glyoxal resin and its modified soybean adhesive[J]. International Journal of Adhesion and Adhesives, 2021, 111: 102986.
Yan Y T, Dong Y M, et al. Enhancement of mechanical and thermal properties of Poplar through the treatment of glyoxal-urea/nano-SiO2 [J]. RSC Advances, 2015, 5(67): 54148-54155. DOI: 10.1039/C5RA07294Hhttp://dx.doi.org/10.1039/C5RA07294H.
孙永春. 乙二醛/三聚氰胺/尿素共缩聚树脂的制备性质及应用的研究[D]. 广州: 华南理工大学, 2015.
DENG S D, Pizzi A, DU G B, et al. Synthesis, Structure, and characterization of glyoxal-urea-formaldehyde cocondensed resins[J]. Journal of Applied Polymer Science, 2014, 131(21): 41009. DOI: 10.1002/app.41009http://dx.doi.org/10.1002/app.41009.
李中昊, 李贤军, 张晓萌, 等. DSC法研究水分含量对低分子量MUF树脂固化特性的影响[J]. 北京林业大学学报, 2021, 43(1): 119-126.
LI Z H, LI X J, ZHANG X M, et al. Effects of moisture content on curing characteristics of low molecular mass melamine-urea-formaldehyde(MUF) resin by differential scanning calorimetry(DSC) method[J]. Journal of Beijing Forestry University, 2021, 43(1): 119-126.
Konnerth J, Gindl W. Mechanical characterisation of wood-adhesive interphase cell walls by nanoindentation[J]. Holzforschung, 2006, 60 (4): 429-433. DOI: 10.1515/HF.2006.067http://dx.doi.org/10.1515/HF.2006.067.
WANG D W, ZHANG X, LUO S, et al. Preparation and property analysis of melamine formaldehyde foam[J]. Advances in Materials Physics and Chemistry, 2012, 2(4): 63-67.
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