| 174 | 4 | 2 |
| 下载次数 | 被引频次 | 阅读次数 |
以马尾松阻燃单板和三聚氰胺改性脲醛(MUF)树脂制备胶合板,研究了不同固化剂对胶合板胶合性能、固化性能和热性能的影响。研究结果表明:相较传统固化剂氯化铵,过氧化氢、氯化铝和甲酸都能有效地促进MUF树脂的固化,并均能提高胶合板的胶合强度,但木破率有所降低,其中过氧化氢作为MUF固化剂综合性能相对最好;相较氯化铵,氯化铝和甲酸作为固化剂会降低MUF树脂的热稳定性,而过氧化氢则能提高MUF树脂的热稳定性;过氧化氢、氯化铝和甲酸催化固化的MUF树脂胶层断面都存在大量的空隙,树脂的耐久性将受到影响;固化剂通过产生氢离子降低树脂体系的p H来促进MUF树脂的固化,但存在一定的局限性。
Abstract：The plywood was prepared from flame retardant veneer of masson pine and melamine modified urea formaldehyde(MUF) resin,and the effects of curing agent on plywood bonding performance,curing characteristics and thermal properties were studied.The research results showed that,compared with the traditional curing agent ammonium chloride,hydrogen peroxide,aluminum chloride and formic acid could effectively promote the curing of MUF resin and improve the bonding strength of ply wood,but the wood failure percentage was reduced.Among them,hydrogen peroxide had the relatively best comprehensive performance as MUF curing agent.Compared with ammonium chloride,aluminum chloride and formic acid as curing agents could reduce the thermal stability of MUF resin,while hydrogen peroxide could improve the thermal stability of MUF resin.There were a lot of gaps in the cross-section of MUF resin cured by hydrogen peroxide,aluminum chloride and formic acid,and the durability of resin would be affected.The curing agent could promote the curing of MUF resin by producing hydrogen ions and then reducing the pH of resin system,but there exist certain limitations.
[1]高强，刘峥，李建章.人造板用大豆蛋白胶黏剂研究进展[J].林业工程学报，2020,5(2):1-11.
[2]肖小兵.我国人造板产业发展现状[J].木材工业，2016,30(2):11-15.
[3]伍艳梅，吕斌.我国人造板产品发展现状及建议[J].中国人造板，2020,27(4):7-11.
[4]时君友，温明宇，李翔宇，等.生物质基无甲醛胶黏剂的研究进展[J].林业工程学报，2018,3(2):1-10.
[5]管宁.欧洲人造板联合会（EPF)2019年度大会要闻[J].国际木业，2020,50(2):14-15.
[6]陈杰，余丽萍，田美芬，等.复合阻燃剂对杨木胶合板性能的影响[J].林产工业，2020,57(1):22-24;36.
[7]张其，肖泽芳，龚宸，等.磷酸脒基脲和季戊四醇磷酸酯复合改性MUF木材涂料的阻燃性能研究[J].林业工程学报，2018,3(6):48-55.
[8]吴丹妮，孙萍，郑妮华，等.胶合板用镁质胶黏剂的制备与性能表征[J].林业工程学报，2020,5(2):54-61.
[9]韦鹏练，秦志永，符韵林，等.阻燃剂浓度对桉木胶合板胶合强度和润湿性的影响[J].西南林业大学学报，2018,38(2):211-214.
[10]李晓平，吴章康，王珺.思茅松阻燃胶合板的制备和性能[J].浙江农林大学学报，2013,30(5):724-728.
[11]韦鹏练，秦志永，符韵林，等.桉木阻燃胶合板胶合强度及润湿性研究[J].西北林学院学报，2017,32(4):244-247.
[12]吴志刚，张本刚，梁坚坤，等.大豆蛋白-三聚氰胺-尿素-甲醛树脂胶黏剂固化剂的研究[J].西北林学院学报，2019,34(5):212-217.
[13]董泽刚，高华，杜海军，等.三聚氰胺改性脲醛树脂胶黏剂的固化性能[J].合成树脂及塑料，2018,35(3):72-75.
[14]孙燕，徐伟涛，毛安，等.我国脲醛树脂制备技术研究概述[J].林产工业，2020,57(1):1-4.--28 550299
[15]WU Z G,LEI H,DU G B,et al.Urea-formaldehyde resin prepared with concentrated formaldehyde[J].Journal of Adhesion Science and Technology,2016,30(24):2655-2666.
[16]CAO M,LI T H,WU Z G,et al.A computational study on the reaction mechanism of neutral phenol with formaldehyde in aqueous solution[J].Progress in Reaction Kinetics and Mechanism,2016,41(2):144-152.
[17]沈介发，陈代祥，马晓明，等.固化体系对脲醛树脂粘接强度的影响[J].中国胶粘剂，2018,27(2):7-10.
[18]张云飞，吕满庚，刘辉，等.复合固化剂对低甲醛脲醛树脂固化特性的影响[J].中国胶粘剂，2017,26(8):38-41;47.
[19]刘源松，关明杰，张志威，等.木质素改性脲醛树脂对竹层积材甲醛释放量及胶合性能的影响[J].林业工程学报，2017,2(3):28-32.
[20]WU Z G,ZHANG B G,ZHOU X J,et al.Influence of single/collective use of curing agents on the curing behavior and bond strength of soy protein-melamine-urea-formaldehyde(SMUF)resin for plywood assembly[J].Polymers,2019,11(12):1995.
[21]LUO J L,ZHANG J Y,GAO Q,et al.Toughening and enhancing melamine-urea-formaldehyde resin properties via in situ polymerization of dialdehyde starch and microphase separation[J].Polymers,2019,11(7):1167.
基本信息:
DOI：10.13416/j.ca.2020.09.007
中图分类号:TS653.3
引用信息:
[1]田美芬,李利芬,余丽萍等.固化剂对MUF树脂基马尾松阻燃胶合板性能影响研究[J].中国胶粘剂,2020,29(09):24-28.DOI:10.13416/j.ca.2020.09.007.
基金信息:
贵州省科技项目（黔科合支撑[2019]2308、NY[2015]3027和[2020]1Y125）; 国家自然科学基金项目（31800481）; 贵州省林业厅项目（黔林科合[2017]14）; 贵州省科技计划项目（黔科合平台人才[2018]5781）