Isishwankathelo: Eli nqaku lihlalutya ngokweenkcukacha malunga nempembelelo yomgangatho wepropati yokulinganisa yeglue kwinkqubo yokulamina. Ukongeza koku, likhankanya ukuba endaweni yokugweba ukusebenza kokulinganisa ngokugweba ukuba kukho na'amabala amhlophe' okanye 'amaqamza', kukucaca kweemveliso ezifakwe ilaminethi okunokuba ngumgangatho wovavanyo lokusebenza kokulinganisa kwi-adhesive.
1. Ingxaki yeBubble kunye nokuLinganisela kweGlue
Amabala amhlophe, amaqamza, kunye nokungacaci kakuhle ziingxaki eziqhelekileyo zomgangatho wokubonakala xa kusetyenzwa izinto ezidityanisiweyo. Kwiimeko ezininzi, abaprosesa bezinto ezidityanisiweyo bathi ezi ngxaki zingasentla zibangelwa kukungalingani kakuhle kweglue!
1.1 Le glue ayisiyo loo glue
Abaprosesa bezinto ezidityanisiweyo banokubuyisela imigqomo yeglue engavulwanga nengasetyenziswanga kubaboneleli ngokusekwe kwisigwebo sokuba iglue ayilungiswanga kakuhle, okanye bafake izikhalazo okanye amabango kubaboneleli.
Kufuneka kuqatshelwe ukuba iglu ethathwa njengengasebenzi kakuhle ekulinganiseni "yisisombululo sokusebenza kweglue" esilungisiweyo/esixutywe ngabathengi kwaye sinoburhabaxa obunexabiso elithile. Iglue ebuyisiweyo yibhakethi yokuqala yeglue engavulwanga.
Ezi bhakethi zimbini "zeglue" ziingcamango nezinto ezahlukeneyo ngokupheleleyo!
1.2 Izalathi zovavanyo lokulinganisa iglu
Izalathisi zobugcisa zokuvavanya ukusebenza kokulinganisa kweglu kufuneka zibe kukuxinana kunye noxinzelelo lokumanzisa umphezulu. Okanye, "ukunyibilika kweglu" kukudibanisa "ukunyibilika kweglu" kunye "nokumanzisa kweglu".
Kwiqondo lobushushu begumbi, uxinzelelo lokumanzisa umphezulu we-ethyl acetate lumalunga ne-26mN/m.
Uxinzelelo lokuqala lweebhareli (umxholo oqinileyo) lwee-adhesive ze-polyurethane ezisekelwe kwisinyibilikisi ezisetyenziswa kwicandelo lokucubungula izinto ezidityanisiweyo ngokubanzi luphakathi kwama-50% -80%. Ngaphambi kokuba kusetyenziswe ukucubungula okudityanisiweyo, ii-adhesive ezikhankanyiweyo apha ngasentla kufuneka zincitshiswe ziye kuxinzelelo olusebenzayo olumalunga nama-20% -45%.
Ngenxa yokuba eyona nto iphambili kwisisombululo sokuncamathelisa esixutyiweyo yi-ethyl acetate, uxinzelelo lokumanzisa umphezulu wesisombululo sokunamathela esixutyiweyo luya kusondela kuxinzelelo lokumanzisa umphezulu we-ethyl acetate ngokwayo.
Ngoko ke, lo gama nje uxinzelelo lokumanzisa umphezulu we-substrate edibeneyo esetyenzisiweyo ihlangabezana neemfuno ezisisiseko zokucubungula i-composite, ukumanzisa kwe-adhesive kuya kuba kuhle!
Uvavanyo lokutyibilika kweglue yi-viscosity. Kwicandelo lokucubungula okudityanisiweyo, okubizwa ngokuba yi-viscosity (oko kukuthi i-viscosity esebenzayo) kubhekisa kwixesha ngemizuzwana elifunyanwa lulwelo olusebenzayo lweglue xa luphuma kwi-viscosity cup, olulinganiswa kusetyenziswa imodeli ethile ye-viscosity cup. Kungathathwa ngokuba ulwelo olusebenzayo lweglue olulungiselelwe kwiindidi ezahlukeneyo zeglue yebhakethi yokuqala lune-"viscosity yokusebenza" efanayo, kwaye "ulwelo olusebenzayo" lwayo lune-"glue fluidity" efanayo!
Phantsi kwezinye iimeko ezingatshintshanga, okukhona i-"viscosity yokusebenza" ye-"working fluid" elungiselelwe nge-adhesive yohlobo olufanayo lwesakhelo isezantsi, kokukhona i-"adhesive fluidity" yayo ingcono!
Ngokukodwa, kwiindidi ezahlukeneyo zeeglue, ukuba ixabiso le-viscosity yesisombululo sokusebenza esixutyiweyo yimizuzwana eli-15, isisombululo sokusebenza esilungiselelwe zezi didi zeeglue sinomlinganiselo ofanayo weglue.
1.3 Ipropati yokulinganisa iglu luphawu lolwelo olusebenzayo lweglu
Ezinye iialcohols azenzi ulwelo oluqinileyo xa ibhere ivuliwe, kodwa zenza ijeli efana nejeli engenamanzi. Zifuna ukunyibilikiswa kwaye zixutywe nesixa esifanelekileyo se-organic solvent ukuze kufunyanwe uxinaniso olufunekayo kunye ne-viscosity yeglue.
Kuyacaca ukuba ukusebenza kokulinganisa kweglue kukuvavanya isisombululo esisebenzayo esenziwe "kwingxinano yokusebenza" ethile, endaweni yokuvavanya iglue yokuqala yebharele engaxutywanga.
Ngoko ke, akulunganga ukuthi iglue ayilunganga kakuhle ngenxa yeempawu eziqhelekileyo zohlobo oluthile lweglue yebhakethi yokuqala!
2. Izinto ezichaphazela ukulinganiswa kwento yokuncamathelisa
Nangona kunjalo, kwisisombululo sokuncamathelisa esixutyiweyo, kukho umahluko kwinqanaba lamanzi anamathelayo!
Njengoko bekutshiwo ngaphambili, izalathisi eziphambili zokuvavanya ukusebenza kokulinganisa ulwelo olusebenzayo lwe-adhesive kukuxinana kokumanzisa kumphezulu kunye ne-viscosity yokusebenza. Isalathisi soxinzelelo lokumanzisa kumphezulu asibonisi utshintsho olukhulu ngaphakathi koluhlu lwesiqhelo loxinzelelo lokusebenza. Ke ngoko, umongo wokungalingani kakuhle kwe-adhesive kukuba ngexesha lenkqubo yokufaka, i-viscosity ye-adhesive iyanda ngokungaqhelekanga ngenxa yezizathu ezithile, nto leyo ebangela ukwehla kokusebenza kwayo kokulinganisa!
Ziziphi izinto ezinokubangela utshintsho kwi-viscosity yeglue ngexesha lokusetyenziswa kwayo?
Kukho izinto ezimbini eziphambili ezinokubangela utshintsho kwi-viscosity yeglue, enye bubushushu beglue, kodwa uxinzelelo lweglue.
Kwiimeko eziqhelekileyo, i-viscosity yolwelo iyancipha xa ubushushu busanda.
Kwiincwadi zomsebenzisi ezibonelelwa ziinkampani ezahlukeneyo zokuncamathelisa, amaxabiso e-viscosity yesisombululo sokuncamathelisa (ngaphambi nasemva kokuxutywa) alinganiswa kusetyenziswa i-viscometer ejikelezayo okanye indebe ye-viscosity kubushushu bolwelo obuyi-20 ° C okanye i-25 ° C (oko kukuthi ubushushu besisombululo sokuncamathelisa ngokwaso) buhlala buboniswa.
Kwicala lomthengi, ukuba ubushushu bokugcina bebhakethi yokuqala yeglue kunye ne-diluent (i-ethyl acetate) buphezulu okanye bungaphantsi kwama-20 ° C okanye ama-25 ° C, ubushushu beglue elungisiweyo buya kuba phezulu okanye bungaphantsi kwama-20 ° C okanye ama-25 ° C. Ngokwemvelo, ixabiso lokwenyani leglue elungisiweyo liya kuba ngaphantsi kwexabiso le-viscosity eliboniswe kwincwadi yemiyalelo. Ebusika, ubushushu beglue elungisiweyo bunokuba ngaphantsi kwama-5 ° C, kwaye ehlotyeni, ubushushu beglue elungisiweyo bunokuba ngaphezulu kwama-30 ° C!
Kufuneka kuqatshelwe ukuba i-ethyl acetate sisinyibilikisi sendalo esiguquguqukayo kakhulu. Ngexesha lenkqubo yokuguquguquka kwe-ethyl acetate, iya kutsala ubushushu obuninzi kwisisombululo esinamathelayo kunye nomoya ojikelezileyo.
Okwangoku, uninzi lweeyunithi zokulaminetha kwiimashini ezidityanisiweyo zivulekile kwaye zixhotyiswe ngezixhobo zokukhupha umoya zasekuhlaleni, ngoko ke isixa esikhulu se-solvent siya kuphuma kwidiski yokunamathela kunye nebhereli. Ngokwezinto ezibonweyo, emva kwexesha lokusebenza, ubushushu bolwelo olusebenzayo lweglue kwitreyi yeglue ngamanye amaxesha bunokuba ngaphezulu kwe-10 ° C ngaphantsi kobushushu obujikelezileyo!
Njengoko ubushushu beglu busiya buncipha kancinci kancinci, uburhabaxa beglu buya kunyuka kancinci kancinci.
Ngoko ke, ukusebenza kokulinganisa kwe-adhesives ezisekelwe kwi-solvent kuyawohloka kancinci kancinci njengoko ixesha lokusebenza kwezixhobo liqhubeka ixesha elide.
Ngamanye amazwi, ukuba ufuna ukugcina uzinzo lwe-adhesive based solvent leveling, kuya kufuneka usebenzise i-viscosity controller okanye ezinye iindlela ezifanayo ukugcina i-adhesive viscosity izinzile kuyo yonke inkqubo yokufaka.
3. Izalathi zovavanyo lweziphumo ezichanekileyo zokulinganisa iglu
Uvavanyo lwesiphumo sokulinganisa iglu kufuneka lube luphawu lwemveliso edityanisiweyo kwinqanaba elithile, kwaye umphumo wokulinganisa iglu ubhekisa kwisiphumo esifunyenwe emva kokuba iglu isetyenzisiwe. Njengokuba "isantya esiphezulu esiyilwe" semoto siluphawu lwemveliso, isantya sokuqhuba imoto endleleni phantsi kweemeko ezithile sisiphumo esinye.
Ukulinganisa iglu kakuhle yeyona nto iphambili ekufumaneni iziphumo ezilungileyo zokulinganisa. Nangona kunjalo, ukusebenza kakuhle kweglu kusenokungabi naziphumo ezilungileyo zokulinganisa iglu, kwaye nokuba iglu inamandla okulinganisa aphantsi (oko kukuthi, i-viscosity ephezulu), iziphumo ezilungileyo zokulinganisa iglu zisenokufunyanwa kwiimeko ezithile.
4. Ulwalamano phakathi kweziphumo zokulinganisa iglu kunye neziganeko "zamabala amhlophe" kunye "namaqamza"
“Amabala amhlophe, amaqamza, kunye nokungafihlisi” okungalunganga ziziphumo ezininzi ezingafunekiyo kwiimveliso ezidityanisiweyo. Zininzi izizathu zeengxaki ezingentla, kwaye ukungalingani kakuhle kweglue yenye yazo. Nangona kunjalo, isizathu sokungalingani kakuhle kweglue asikokuba kuphela ukungalingani kakuhle kweglue!
Isiphumo sokungalingani kakuhle kweglue asinakukhokelela "kumabala amhlophe" okanye "amaqamza", kodwa sinokuchaphazela ukucaca kwefilimu edityanisiweyo. Ukuba ukuthamba okuncinci kwesiseko esidityanisiweyo kuphantsi, nokuba isiphumo sokulinganiswa kweglue silungile, kusekho ithuba lokuba "amabala amhlophe namaqamza".
Ixesha leposi: Jan-17-2024