Inqaku: Eli nqaku lihlalutya kwiinkcukacha malunga nempembelelo yomgangatho womgangatho wepropathi yokuncamathelisa kwinkqubo yokuncamathelisa. Ukongeza koku, ikhankanya ukuba endaweni yokugweba ukusebenza komgangatho ngokugweba ukuba kukho'amabala amhlophe' okanye 'amaqamza', kukungafihli kweemveliso ezilaminethiweyo ezinokuba ngumgangatho wovavanyo womgangatho wokusebenza kokuncamathelisa.
1.Ingxaki yeBubble kunye neNqanaba leGlue
Amabala amhlophe, amaqamza, kunye nokungacaceli okulambathayo yimiba yomgangatho wenkangeleko eqhelekileyo ekusetyenzweni kwemathiriyeli edibeneyo.Kwiimeko ezininzi, iiprosesa zemathiriyeli edibeneyo zibalula le miba ingasentla kumgangatho ombi wokuncamathelisa!
1.1Le glu asiyiyo loo glu
Iiprosesa zezinto ezihlanganisiweyo zinokubuyisela imigqomo engavulwanga kunye nengasetyenziswanga yokuncamathelisa kubaboneleli ngokusekwe kwisigwebo sokunganyangeki kakuhle kokuncamathela, okanye izikhalazo zefayile okanye amabango kunye nababoneleli.
Kufuneka kuqatshelwe ukuba iglue ethathwa njengento engasebenzi kakuhle "isisombululo sokusebenza kweglue" esilungiselelwe / sihlanjululwe ngabathengi kwaye sine-viscosity yexabiso elithile.I-glue ebuyisiweyo yibhakethi yokuqala engavulwanga yeglue.
Ezi bhakethi zimbini ze "glue" ziingcamango ezahlukeneyo kunye nezinto!
1.2Izalathi zovavanyo lokulinganisa iglue
Iimpawu zobugcisa zokuvavanya ukusebenza komgangatho wokunamathela kufuneka zibe yi-viscosity kunye noxinzelelo lokumanzisa komhlaba.Okanye kunoko, "ubumanzi beglu" yindibaniselwano "yeglue emanzi" kunye "nobumanzi beglu".
Kwiqondo lokushisa kwegumbi, ukunyanzeliswa komphezulu we-ethyl acetate malunga ne-26mN / m.
Ugxininiso lombhobho wokuqala (umxholo oqinileyo) we-solvent based polyurethane adhesives esetyenziswa kwintsimi yokulungiswa kwezinto ezidibeneyo ngokuqhelekileyo phakathi kwe-50% -80%.Ngaphambi kokuphumeza ukusetyenzwa kwe-composite, i-adhesives ekhankanywe ngasentla kufuneka ihlanjululwe kwi-concentration yokusebenza ejikeleze i-20% -45%.
Ngenxa yokuba icandelo eliphambili kwisisombululo sokusebenza esincamatheleyo esixutyiweyo yi-ethyl acetate, ukunyanzeliswa komphezulu we-adhesive diluted isisombululo sokusebenza kuya kuba kufutshane noxinzelelo lokumanzisa komphezulu we-ethyl acetate ngokwayo.
Ngoko ke, ukuba nje ukunyanzeliswa kokumanzisa komphezulu we-substrate edibeneyo esetyenzisiweyo ihlangabezana neemfuno ezisisiseko ze-composite processing, ukumanzisa kwe-adhesive kuya kuba kuhle!
Uvavanyo lwe-fluidity yeglue yi-viscosity.Kwinkalo yokusetyenzwa kwe-composite, into ebizwa ngokuba yi-viscosity (okt i-viscosity yokusebenza) ibhekisela kwixesha kwimizuzwana apho i-glue esebenzayo yolwelo idibana nayo xa iphuma kwikomityi ye-viscosity, elinganiswa kusetyenziswa imodeli ethile ye-viscosity cup.Inokuqwalaselwa ukuba i-fluid esebenzayo yeglue elungiselelwe ukusuka kumabanga ahlukeneyo e-bucket glue yasekuqaleni ine-"viscosity yokusebenza" efanayo, kwaye "ulwelo olusebenzayo" lufana "neglue fluidity" efanayo!
Ngaphantsi kwezinye iimeko ezingatshintshiyo, i-ezantsi "i-viscosity yokusebenza" "ye-fluid esebenzayo" elungiselelwe nge-adhesive yohlobo olufanayo lwesakhelo, ngcono "i-adhesive fluidity" yayo!
Ngokukodwa, kumabakala amaninzi ahlukeneyo okunamathelayo, ukuba ixabiso le-viscosity yesisombululo sokusebenza esihlanjululweyo yimizuzwana eyi-15, ngoko isisombululo esisebenzayo esilungiselelwe ngala mabanga okunamathela sine "glue leveling" efanayo.
1.3 Ipropathi yokulinganisa iglu luphawu lweglue esebenzayo
Ezinye ii-alcohol azenzi i-viscous fluid xa umgqomo uvulwa nje, kodwa kunokuba ijeli efana neprojekti engenamanzi.Kufuneka zichithwe kwaye zihlanjululwe ngexabiso elifanelekileyo le-solvent ye-organic ukuze bafumane i-concentration efunekayo kunye ne-viscosity yeglue.
Kucacile ukuba ukusebenza komgangatho weglue luvavanyo lwesisombululo esisebenzayo esifakwe kwi "concentration yokusebenza" ethile, kunokuvavanya iglue ye-barrel yokuqala engaxutywanga.
Ke ngoko, akulunganga ukubalelanisa umgangatho ombi weglu kwiimpawu eziqhelekileyo zohlobo oluthile lweglue yebhakethi yokuqala!
2.Izinto ezichaphazela umgangatho we-adhesive
Nangona kunjalo, kwisisombululo sokusebenza sokuncamathisela okuxutyiweyo, kukho ngokwenene umahluko kwinqanaba lamanzi ancamathelayo!
Njengoko bekutshiwo ngaphambili, ezona zalathisi eziphambili zokuvavanya ukusebenza komgangatho wokuncamathelisa okusebenzayo kulwelo lokumanzisa umphezulu kunye ne-viscosity yokusebenza.Isalathisi soxinzelelo lokumanzisa phezu komhlaba alubonakalisi utshintsho olubalulekileyo phakathi koluhlu loxinaniso oluqhelekileyo lokusebenza.Ke ngoko, undoqo womgangatho wokuncamathelisa ongalunganga kukuba ngexesha lenkqubo yesicelo, i-viscosity ye-adhesive inyuka ngokungaqhelekanga ngenxa yezinto ezithile, okukhokelela ekunciphiseni kokusebenza kwayo komgangatho!
Ziziphi izinto ezinokubangela utshintsho kwi-viscosity yeglue ngexesha lokusetyenziswa kwayo?
Kukho izinto ezimbini eziphambili ezinokubangela utshintsho kwi-viscosity yeglue, enye yiqondo lokushisa kweglue, kodwa ukugxilwa kweglue.
Kwiimeko eziqhelekileyo, i-viscosity ye-fluid iyancipha ngokunyuka kweqondo lokushisa.
Kwincwadana yomsebenzisi ebonelelwa ziinkampani ezincamathelayo ezahlukeneyo, ixabiso le-viscosity yesisombululo sokuncamathelisa (phambi nasemva kokuhlanjululwa) kulinganiswe kusetyenziswa i-viscometer ejikelezayo okanye indebe ye-viscosity kubushushu bolwelo obungama-20 ° C okanye ama-25 ° C (oko kukuthi iqondo lokuncamathelisa isisombululo ngokwaso) zidla ngokuboniswa.
Kwicala lomxhasi, ukuba ubushushu bokugcinwa kwebhakethi yokuqala yeglue kunye ne-diluent (ethyl acetate) iphezulu okanye ingaphantsi kwe-20 ° C okanye i-25 ° C, iqondo lokushisa leglue elilungisiweyo liya kuba phezulu okanye ngaphantsi kwe-20 ° C. okanye i-25 ° C. Ngokwemvelo, ixabiso le-viscosity langempela leglue elilungisiweyo liya kuba ngaphantsi kwexabiso le-viscosity eliboniswe kwincwadana.Ebusika, ukushisa kwe-adhesive elungiselelwe kunokuba ngaphantsi kwe-5 ° C, kwaye ehlotyeni, ukushisa kwe-adhesive elungiselelwe kunokuba ngaphezulu kwe-30 ° C!
Kufuneka kuqatshelwe ukuba i-ethyl acetate sisinyibilikisi esiguquguqukayo kakhulu se-organic.Ngethuba lenkqubo ye-volatilization ye-ethyl acetate, iya kuthatha ubuninzi bobushushu kwisisombululo sokubambelela kunye nomoya ojikelezayo.
Okwangoku, iiyunithi ezininzi zokulahla kumatshini odibeneyo zivulekile kwaye zixhotyiswe ngezixhobo zokukhupha zendawo, ngoko ke inani elikhulu le-solvent liya kunyuka kwi-disc adhesive kunye ne-barrel.Ngokoqwalaselo, emva kwexesha lokusebenza, iqondo lobushushu leglu esebenza kulwelo kwitreyi yeglu ngamanye amaxesha linokuba ngaphezulu kwe-10 ° C ngaphantsi kweqondo lobushushu elijikelezileyo!
Njengoko ubushushu beglue buyancipha ngokuthe ngcembe, i-viscosity yeglue iya kwanda ngokuthe ngcembe.
Ke, ukusebenza komgangatho wokuncamathelisa okusekwe kwi-solvent iyehla ngokuthe ngcembe ngokwandiswa kwexesha lokusebenza kwesixhobo.
Ngamanye amazwi, ukuba ufuna ukugcina uzinzo lwe-adhesive leveling esekelwe kwi-solvent, kufuneka usebenzise isilawuli se-viscosity okanye ezinye iindlela ezifanayo ukugcina i-viscosity enamathelayo izinzile kuyo yonke inkqubo yesicelo.
3.Izalathi zokuphonononga iziphumo ezichanekileyo zokulinganisa iglue
Uvavanyo lwesiphumo somgangatho weglu kufuneka lube luphawu lwemveliso edibeneyo kwinqanaba elithile, kwaye umphumo wokulinganisa weglue ubhekisela kwisiphumo esifunyenwe emva kokuba iglue isetyenziswe. uphawu lwemveliso, isantya sangempela sokuqhuba isithuthi endleleni phantsi kweemeko ezithile sesinye isiphumo.
Umgangatho weglue olungileyo yimeko esisiseko yokufumana iziphumo ezilungileyo.Nangona kunjalo, ukusebenza kakuhle kweglue kusenokungabi neziphumo ezilungileyo zokulinganisa iglu, kwaye nokuba iglu inomgangatho ophantsi wokusebenza (oko kukuthi, i-viscosity ephezulu), iziphumo ezilungileyo zokulinganisa iglu zinokufumaneka kwiimeko ezithile.
4. Ulungelelwaniso phakathi kweziphumo zokunyuswa kweglue kunye neziganeko "zeendawo ezimhlophe" kunye "namaqamu"
"Amabala amhlophe, amaqamza, kunye nokungafihli" okungalunganga ziziphumo ezininzi ezingafunekiyo kwiimveliso ezidibeneyo.Zininzi izizathu zezi ngxaki zingasentla, kwaye umgangatho ombi weglue yenye yazo.Nangona kunjalo, isizathu sokungahambi kakuhle kweglue asikho nje ngenxa yomgangatho ophantsi weglue!
Isiphumo esibi somgangatho weglue asinakukhokelela ekubeni "amabala amhlophe" okanye "amaqamza", kodwa sinokuchaphazela ukucaca kwefilimu edibeneyo.Ukuba i-micro flatness ye-composite substrate ihlwempuzekile, nangona umphumo wokulinganisa we-adhesive ulungile, kusekho ithuba lokuba "amabala amhlophe kunye namabhubhu".
Ixesha lokuposa: Jan-17-2024