Inkqubo encamathelayo yokunyanga

Inkqubo encamathelayo yokunyanga

Indlela yokucoca:

Ukunyangwa kwe-adhesives kwenziwa ngeendlela ezibonakalayo, ezifana nokunyuka kwe-solvents, i-emulsion coagulation kunye nokupholisa okunyibilikayo, kunye neendlela zekhemikhali.

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(3) I-Emulsion adhesive: Njengoko amanzi kwi-emulsion engena ngokuthe ngcembe kwi-adherend ene-porous and evaporates, i-concentration ye-emulsion iyaqhubeka ikhula, kwaye ekugqibeleni ngenxa yempembelelo yoxinzelelo lomphezulu, i-polymer colloidal particles condense. Xa ubushushu be-ambient buphezulu, i-emulsion idibanisa kwifilimu enamathelayo eqhubekayo, ngelixa iqondo lokushisa eliphantsi liphantsi kunye neqondo lokushisa elincinci lokubumba ifilimu (MFT), ifilimu emhlophe edibeneyo engapheliyo yenziwa. Izinto zokuncamathelisa i-Emulsion ikakhulu ziyi-polyvinyl acetate kunye ne-copolymers zayo kunye ne-acrylic acid copolymers.

(4) I-adhesives ye-Thermosetting I-monomers esebenzayo okanye i-prepolymers ye-thermosetting resins ingena kwi-polymerization reactions. Njengoko ubunzima be-molecular bukhula, amakhonkco e-molecular atshintsha kwaye anqamleze - ikhonkco, enze i-gel engenakunyibilika okanye ukuqina okusisiseko. Ukwandisa ixesha lokunyanga kunye nokunyusa izinga lokushisa ngaphakathi koluhlu oluthile alulingani, kwaye ukwehlisa ubushushu bokunyanga kunzima ukuhlawulela ngokwandisa ixesha. Ngenxa yokuba ukusabela kweekhemikhali ezithile kufuneka kwenzeke phakathi kwe-adhesive kunye nomphezulu we-adherend, oku kufuna ubushushu obuphezulu ngokwaneleyo ukuqhubeka.

Ukunyanga uxinzelelo:

Kuyinzuzo ukuba i-adhesive ingene ngokupheleleyo kumphezulu; kunenzuzo ekususeni i-volatiles ephantsi ye-molecular eveliswa yi-adhesive curing reaction; kunenzuzo ekususeni i-solvents eguqukayo eseleyo kwi-adhesive layer; kunenzuzo ekulawuleni ubukhulu bomgca wokunamathela; izinto zokuncamathelisa ezine-viscosity ephezulu zihlala zinemigangatho encamathelayo etyebileyo, kwaye uhlengahlengiso loxinzelelo lokunyanga lulawula ukutyeba komgangatho wokuncamathelisa.

Emva kokufaka iglue, yiyeke ihlale ixesha elithile, ebizwa ngokuba yi-pre-curing. Xa i-viscosity yeglue ikhula, sebenzisa uxinzelelo ukuze uqinisekise ukufana kobunzima boluhlu lweglue.

Ukunyanga ubushushu:

Ukuba iqondo lokushisa lokunyanga liphantsi kakhulu, umnqamlezo - ukuxinana kwe-adhesive layer iphantsi kakhulu, kwaye ukusabela kokunyanga akuphelelanga; ukuba iqondo lokushisa lokunyanga liphezulu kakhulu, kulula ukubangela ukuba iglue ilahlekelwe okanye yenza i-adhesive layer brittle, okubangela ukuhla kwamandla okudibanisa. Ukufudumeza kukulungele ukusabalalisa iamolekyu phakathi kwe-adhesive kunye neendawo ezidibeneyo, ezinokunceda ukwenza iibhondi zamakhemikhali.

(1) Indlela yokufudumeza ngokuthe ngqo kwi-oveni: Sebenzisa isixhobo sokuvuthela umoya ukuqinisekisa ukuhanjiswa kobushushu obufanayo.

(2) Indlela yokufudumeza yangaphandle: Ubushushu bugqithiselwa ngokukhawuleza ngaphakathi kwendawo yokubambelela, kunciphisa kakhulu ixesha lokunyanga. Indlela yokufudumala ye-Ultrasonic: Ifanelekile ukunyanga ukushisa kwe-viscoelastic adhesives kunye ne-solvent-i-adhesives yamahhala, kodwa ayifanelekanga kwi-thermosetting rigid adhesives.