两种树脂胶合重组竹结构材的性能比较
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摘要
探讨双组分水性高分子异氰酸酯胶黏剂(API)用于胶合高密度重组竹结构材的可行性,采用力学实验机、DMA和SEM等方法,比较自制API与冷固型苯酚—间苯二酚—甲醛树脂(PRF)分别胶合的重组竹结构材试件的压缩剪切强度、木破率、热力学数据以及胶合界面情况。结果显示:API和PRF胶合的重组竹均有较高的干强度值和木破率值;高温处理可显著提高两种树脂的强度; DMA储能模量显示API与PRF胶合的重组竹热力学性能相似; SEM显示PRF胶合的重组竹韧性较API略强。API胶合的重组竹剪切强度值超过标准规定值,说明合适的API可用于重组竹结构材的胶合。
In order to evaluate the feasibility of using Aqueous polymer isocyanate( API) to bonding high density structural bamboo scrimber,compressive shear strength,wood failure ratio,thermal properties and interface morphology of two kinds of structural bamboo scrimber adhesion with API and PRF resins were investigated by mechanical testing machine,dynamic mechanical analysis( DMA) and scanning electronic microscope( SEM) respectively. Results showed that both of dry compressive shear strength and wood failure ratio of bamboo scrimber bonding with API and PRF were high,and they were raised obviously by high temperature treatment.DMA date showed that both of their thermodynamic properties were similar. It can be seen that tenacity of API was weaker than PRF from SEM. The shear strength of bamboo scrimber bonding with API was higher than the value of standard of Structural glued laminated timber. The results showed that proper API could be used to glue structural bamboo scrimber.
In order to evaluate the feasibility of using Aqueous polymer isocyanate( API) to bonding high density structural bamboo scrimber,compressive shear strength,wood failure ratio,thermal properties and interface morphology of two kinds of structural bamboo scrimber adhesion with API and PRF resins were investigated by mechanical testing machine,dynamic mechanical analysis( DMA) and scanning electronic microscope( SEM) respectively. Results showed that both of dry compressive shear strength and wood failure ratio of bamboo scrimber bonding with API and PRF were high,and they were raised obviously by high temperature treatment.DMA date showed that both of their thermodynamic properties were similar. It can be seen that tenacity of API was weaker than PRF from SEM. The shear strength of bamboo scrimber bonding with API was higher than the value of standard of Structural glued laminated timber. The results showed that proper API could be used to glue structural bamboo scrimber.
引文
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[20]吕建雄,蒋佳荔.木材动态黏弹性基础研究[M].北京:科学出版社,2015.LU J X,JIANG J L. Basic research on dynamic viscoelasticity ofwood[M]. Beijing:Science Press,2015.
[2]时君友,韦双颖.水性改性淀粉-多异氰酸酯胶粘剂的研究[J].林业科学,2003,39(5):105-110.SHI J Y,WEI S Y. Study on a water-based adhesive system ofcorn starch/synthetic rubber latex/isocyanate[J]. Scientia SilvaeSinicae,2003,39(5):105-110.
[3]任一萍,王正,王志玲.影响API粘接柞木的强度因子研究[J].木材工业,2007,21(2):1-3.REN Y P,WANG Z,WANG Z L. Factors influencing bondingstrength of API adhesive bonded Mongolian oak[J]. China WoodIndustry,2007,21(2):1-3.
[4]于文吉,余养伦.我国木、竹重组材发展的现状与前景[J].木材工业,2013,27(1):5-8.YU W J,YU Y L. Development and prospect of wood and bambooscrimber industry in china[J]. China Wood Industry,2013,27(1):5-8.
[5]龚正,袁少飞,张建等.重组竹材生产设备现状及发展趋势[J].林业机械与木工设备,2018,46(9):4-9.GONG Z,YUAN S F,ZHANG J,et al. Research status and develop-ment trend of reconstituted bamboo lumber production equipment[J]. Forestry Machinery&Woodworking Equipment,2018,46(9):4-9.
[6]李延军,许斌,张齐生,等.我国竹材加工产业现状与对策分析[J].林业工程学报,2016,1(1):2-7.LI Y J,XU B,ZHANG Q S,et al. Present situation and the coun-termeasure analysis of bamboo timber processing industry in China[J]. Journal of Forestry Engineering,2016,1(1):2-7.
[7]单炜,李玉顺.竹材在建筑结构中的应用前景分析[J].森林工程,2008,24(2):62-65.SHAN W,LI Y S. Application prospect of bamboo utilization inbuilding structures[J]. Forest Engineering,2008,24(2):62-65.
[8]张亚慧,齐越,黄宇翔,等.我国高性能重组木材料制备技术开发与应用及未来发展[J].木材工业,2018,32(2):14-17.ZHANG Y H,QI Y,HUANG Y X,et al. Manufacturing technologyapplication and future development of high-performance wood scrim-ber in China[J]. China Wood Industry,2018,32(2):14-17.
[9]侯瑞光,刘元,李贤军,等.高温热处理对重组竹物理力学性能的影响[J].中南林业科技大学学报,2013,33(2):101-104.HOU Y G,LIU Y,LI X J,et al. Effects of heat treatment on phys-ical-mechanical properties of reconstituted bamboo lumber(RBL)[J]. Journal of Central South University of Forestry&Technology,2013,33(2):101-104.
[10]曾春雷,曹胜利,王春明,等.采用高频加热方式制造不同结构竹木复合板稳定性的测试[J].林业科技,2017,42(1):47-48.ZENG C L,CAO S L,WANG C M,et al. Testing of stability ofbamboo and wood composite panels of different structures by highfrequency heating[J]. Forestry Science&Technology,2017,42(1):47-48.
[11]任一萍,王正,常亮.低间苯二酚含量PRF树脂的研制[J].木材加工机械,2012,23(3):22-25.REN Y P,WANG Z,CHANG L. Research of low-resorcinol-con-tent PRF[J]. Wood Processing Machinery,2012,23(3):22-25.
[12]柳婷,吴姝云,吴志平,等.木结构工程材用间苯二酚树脂胶粘剂的研究[J].热固性树脂,2015,30(6):33-37.LIU T,WU S Y,WU Z P,et al. Study of resorcinol-phenol-formaldehyde resin adhesive for wood structure engineering materi-als[J]. Thermosetting Resin,2015,30(6):33-37.
[13]王春霞,崔立东,刘浩阳,等.间苯二酚改性酚醛树脂胶粘剂的研究[J].木材机械与木工装备,2014,42(1):31-32.WANG C X,CUI L D,LIU H Y,et al. Study on resorcinol modi-fied Phenolic resin adhesive[J]. Forestry Machinery&Woodwork-ing Equipment,2014,42(1):31-32.
[14]顾继友.我国木材胶黏剂的开发与研究进展[J].林产工业,2017,44(1):6-9.GU J Y. The development and research progress of domestic wood ad-hesives[J]. China Forest Products Industry,2017,44(1):6-9.
[15]唐晓红,毛雅君.人造板胶黏剂的研究进展和发展趋势[J].河南教育学院学报(自然科学版),2017,26(1):30-33.TANG X H,MAO Y J. Research progress and development trend ofadhesives for wood-based panels[J]. Journal of Henan Institute ofEducation(Natural Science Edition),2017,26(1):30-33.
[16]方彦,齐英杰,孙志刚,等.酚醛泡沫防火保温人造板生产线的设备组成与发展[J].林业机械与木工设备,2018,46(4):4-7.FANG Y,QI Y J,SUN Z G,et al. Composition and developmentof equipment for fireproof and thermal insulation henolic foamboard production lines[J]. Forestry Machinery&Woodworking E-quipment,2018,46(4):4-7.
[17]任一萍,刘红征,郭文静,等.热处理温度对重组竹性能的影响[J].木材工业,2018,32(6):1-4.REN Y P,LIU H Z,GUO W J,et al. Effect of thermal treatmenttemperatures on the properties of bamboo scrimber[J]. ChinaWood Industry,2018,32(6):1-4.
[18]国家质量技术监督局.胶粘剂压缩剪切强度试验方法木材与木材[S].北京:中国标准出版社,1999.CSBTS(State Bureau of Quality Technical Supervision). Adhe-sives-wood to wood adhesive bonds-determination of shearstrength by compression loading[S]. Beijing:China StandardsPress,1999.
[19]国家质量技术监督检验检疫总局及中国国家标准化管理委员会.结构用集成材[S].北京:中国标准出版社,2011.General Administration of Quality,Technical Supervision Inspec-tion and Quarantine. Structural glued laminated timber[S]. Bei-jing:China Standards Press,2011.
[20]吕建雄,蒋佳荔.木材动态黏弹性基础研究[M].北京:科学出版社,2015.LU J X,JIANG J L. Basic research on dynamic viscoelasticity ofwood[M]. Beijing:Science Press,2015.