Adhesive Application Of Diluent

Diluent yog cov khoom siv los txo cov viscosity ntawm cov nplaum, ua rau cov nplaum muaj qhov nkag tau zoo, txhim kho cov txheej txheem kev ua tau zoo, thiab qee qhov tuaj yeem txo cov kev ua haujlwm ntawm cov nplaum, yog li txuas ntxiv lub neej kev pabcuam ntawm cov nplaum. Txhawm rau txhawm rau txhim kho cov nplaum nplaum, diluent feem ntau yog siv los yaj cov nplaum thiab kho qhov xav tau viscosity.
Diluent tuaj yeem muab faib ua ob hom: inactive diluent thiab nquag diluent.
①Inactive diluent Lub diluent no tsis muaj cov active pab pawg nyob rau hauv lub molecule, feem ntau inert kuab tshuaj, xws li ethanol, acetone, toluene, thiab lwm yam. Nws tsis koom nyob rau hauv cov tshuaj tiv thaiv thaum lub sij hawm dilution txheej txheem, nws tsuas yog blended nyob rau hauv cov resin thiab pab lub hom phiaj. txo viscosity. Ntxiv nrog rau kev ua si lub luag haujlwm diluting, nws muaj kev cuam tshuam rau cov khoom siv kho tshuab, kub deformation kub, nruab nrab tsis kam thiab kev laus puas tsuaj. Tus nqi evaporation ntawm cov kuab tshuaj yuav tsum tau muab rau hauv tus account. Yog hais tias tus nqi evaporation ceev heev, qhov saum npoo ntawm cov nplaum nplaum yog ib qho yooj yim los tsim ib zaj duab xis, uas cuam tshuam qhov kev khiav tawm ntawm cov kuab tshuaj hauv cov nplaum txheej. Npuas yog tsim nyob rau hauv cov nplaum txheej; Yog hais tias tus nqi evaporation qeeb dhau lawm, cov kuab tshuaj tau tso rau hauv cov nplaum nplaum, uas yuav cuam tshuam rau lub zog sib txuas. Feem ntau, ntau cov kuab tshuaj nrog cov ntsiab lus kub sib txawv yog sib xyaw kom kho tus nqi evaporation. Nws feem ntau yog siv rau hauv cov nplaum nplaum, phenolic adhesives, polyester adhesives thiab epoxy adhesives.
② Active diluents Active diluents yog diluents nrog active pab pawg nyob rau hauv lub molecule. Nws koom nrog cov tshuaj tiv thaiv thaum lub sij hawm dilution ntawm cov nplaum thiab tuaj yeem ua lub luag haujlwm toughening (xws li ntxiv glycerol epoxy resin lossis propylene oxide butyl ether rau epoxy adhesives ua lub luag haujlwm toughening).
Active diluents feem ntau yog siv nyob rau hauv epoxy adhesives, thiab lwm yam yog siv tsawg.