资源描述：
《176 042 six essential glues外语英文电子书》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、SixEssentialBYSCOTTGIBSONGluesPVAVersatileworkhorsegoodforgeneralassemblyTheseadhesiveshandlemostworkandjoineryfurniture-makingneedsCYANOACRYLATEBestforquickrepairsofdefects,suchascracks,smallknots,andsliversPOLYURETHANEIdealforlaminations,edgejoints,andoutdoorfurnitureEPOXYGoodforlaminations,
2、outdoorfurniture,andwhenastructuralgap-fillingbondisneeded42FINEWOODWORKINGPhoto,above:RodneyDiazhenIfirststartedmakingfurni-Wture,Ithoughtthechancesofgluealoneholdingapieceoffurnituretogetherwereprettyslim.Wouldn’titbeagoodidea,Iwondered,tosneakinafewUREAnailsorscrewstoreinforcejointsthatoth-
3、erwisewouldsurelyfail?ButIlearnedthatFORMALDEHYDEwoodworkingjointsdon’tfailveryoften,Goodforveneeringandwhentheydo,it’susuallynottheglueandbentlaminationsthat’stoblame.Mostwoodworkershavetheirfavor-ites,butfewrelyonasingletypeofglue,andforgoodreason.Themanygluestochoosefromhavecharacteristicst
4、hatmakethemespeciallywellsuitedtoonejoboranother.Takingintoaccountawiderangeofwoodworkingapplications,I’vecho-sensixtypesofgluethatwillbeusefulinmanyshops:polyvinylacetate(PVA)oryellowglue,polyurethane,two-partepoxy,cyanoacrylate,hide(bothforms,driedandliquid),andureaformaldehyde(bothtypes,one
5、-partandtwo-part).Thebondingstrengthofeachglueisde-rivedfromstandardindustrytestsandrang-esfrom2,500to4,000psiinshear.Allofthegluesaremorethanstrongenoughforgeneralwoodworkingandfurnituremak-ing,sotodetermineyourchoice,consid-erotherpropertiessuchasshelflife,opentime,clamptime,structuralgap-fi
6、llingproperties,andpotlife.Opentimeisthelengthoftimethatgluedcompo-nentscanbeleftopentotheairbeforetheymustbeassembled.Eachgluehasalim-itedshelflife,whichcanbeshortenedbyexposuretoair,moisture,orheat.Howlonggluecansitaroundandstillworkasadvertisedvariesfromsixmonthstoseveralyears.Two-component
7、gluessuchasepoxyandureaformalde-hydealsohaveapotlife,ortheamountoftimethattheadhesiveremainsusablewhenleftinitsmixingcontainer.Allgluesdifferintheirlevelsoftoxic-ity;ifindoubt,getaMaterialSafetyDataSheet(MSDS)fromthemanufacturerformorei
