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时间:2020-04-19
《烟秆制备刨花板的力学性能研究.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第42卷第6期西部林业科学Vol畅42 No畅6 2013年12月JournalofWestChinaForestryScienceDec畅2013 烟秆制备刨花板的力学性能研究磁龚迎春,李晓平,吴章康,周中原(西南林业大学材料工程学院,云南昆明650224)摘要:烟秆为烟草采摘烟叶后的废弃物,为了更好的利用这种原料,利用不同含水率(9%、6%、3%、0%)和烟秆不同部位(上部、中部和下部)的刨花制成刨花板,测定刨花板的内结合强度、弹性模量和静曲强度,分析含水率和烟秆部位对刨花板力学性能的影响。结果表明,随着含水率从0增加至9%,刨花板的内结
2、合强度从0畅35MPa增加至0畅58MPa,其弹性模量和静曲强度呈先增后减趋势,当含水率在6%时,烟秆刨花板的弹性模量和静曲强度最大。不同部位的烟秆刨花对刨花板的内结合强度、弹性模量、静曲强度有显著影响,其中,利用中部烟秆刨花制备的刨花板的内结合强度、弹性模量、静曲强度最小。利用烟秆刨花制备的刨花板其力学性能能达到国家标准的要求,因此利用烟秆制备刨花板是可行的。关键词:烟秆;刨花板;含水率;力学性能中图分类号:S781畅2 文献标识码:A文章编号:1672-8246(2013)06-0115-04ResearchontheMechanical
3、PropertiesofParticleboardofTobaccoRodGONGYing-chun,LIXiao-ping,WUZhang-kang,ZHOUZhong-yuan(CollegeofMaterialsEngineering,SouthwestForestryUniversity,KunmingYunnan650224,P畅R畅China)Abstract:Tobaccorodwasthegarbagefortobaccoafterpickingtheleaves.Inordertomakebetteruseofthema-te
4、rials,theparticleboardmanufacturedbytheshavingsofthedifferentwatercontent(9%,6%,3%,0%)anddifferentpartsoftobaccorod(upper,middleandlower).Theeffectsofthedifferentwatercontentanddifferentpartsoftobaccorodonthemechanicalpropertiesoftheparticleboardwerestudiedbytestingtheintern
5、albondingandthemodulusofelasticityandstaticbendingstrength.Theresultsshowedthat:withthemoisturecontentin-creasingfrom0%to9%,theinternalbondingoftheparticleboardincreasedform0畅58MPato0畅35MPa,andthemodulusofelasticityandstaticbendingstrengthoftheparticleboardmanifestedupwardfi
6、rstandthendownwardtrend.Whenthemoisturecontentwas6%,themodulusofelasticityandstaticbendingstrengthoftheparticle-boardwerethelargest.Besides,theshavingsfromdifferentpartsoftobaccorodhadgreatinfluenceontheinternalbonding,modulusofelasticityandstaticbendingstrengthoftheparticle
7、board.Yet,theparticleboardmanufacturedbythemiddlepartshavingsofthetobaccorodhadthesmallestinternalbonding,modulusofelasticityandstaticbendingstrength.Themechanicalpropertiesoftheparticleboardmanufacturedbytobaccostemshavingscouldmeetthenationalstandardsof枟Requirementsforboar
8、dsforinteriorfitments(includingfurniture)foruseindrycondi-tions枠GB/T4897畅3-
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