Kodi ndi zinthu ziti zomwe zimakhudza kukhuthala kwa zomatira za pur hot melt?

Mfundo yoziziritsa ndi kulimbitsa kwapur hot melt zomatirandikuti zomatira zotenthetsera za pur hotmelt zimakhala ndi zinthu zosasinthika zomwe zimakhala ndi chinyezi mumlengalenga, komanso zomatira za pur hot melt pambuyo pakulimba sizingakhudzidwe ndi kutentha kwakukulu, kutentha pang'ono, ndi malo ena. Pur hot meltadhesive M'malo mwake, imalowa mu chinthu kuti imangiridwe ndikuphatikizana ndi kapangidwe kake ka maselo kuti iwononge gawo lapansi la chinthucho, potero imamanga zinthu ziwirizo. Ndiye tingagwiritse ntchito chiyani kuti tisinthe zomatira za pur hot melt?

 

1. Surfacetreatment

Pamwamba pa zinthu zambiri zambiri yokutidwa ndi wosanjikiza wa okusayidi, phosphating wosanjikiza kapena moldrelease wothandizira, etc. kupanga "ofooka malire wosanjikiza", amene mwachindunji zimakhudza kugwirizana mphamvu, choncho ndi bwino kuika pamwamba zinthu izi pamaso kugwirizana. The okusayidi wosanjikiza, etc. ndi mankhwala choyamba kupititsa patsogolo thebonding mphamvu.

 

2. Sinthani roughness pamwamba

Pamwamba pa adherend ndi yosalala kwambiri, ndi pur otentha meltadhesive akhoza kudutsa zochepa mamolekyu, potero kuchepetsa kugwirizana mphamvu.The roughening ndondomeko pamwamba pa chinthu kungakhudze adhesion. Choncho, tikhoza kuonjezera mphamvu yomangirira ya meltadhesive yotentha powonjezera roughness ya pamwamba pa chinthu chomangika.

 

3. Adhesivelayer makulidwe

Kulumikizana kwa Pur hot-meltadhesive sikutanthauza kuti guluu mukamagwiritsa ntchito kwambiri, kumamatira kwamphamvu. Kuchuluka kwa guluu wosanjikiza ndikosavuta kutulutsa thovu, zomwe zingayambitse zolakwika kapena kusweka koyambirira, chifukwa chake timayesetsa kumamatira The makulidwe ndi owonda, kuti mphamvu yomangirira ipezeke. Komanso, matenthedwe kukula kwa wandiweyani zomatira wosanjikiza pambuyo Kutentha kumapangitsa thermalstress chifukwa chomangira pamwamba ndi lalikulu, ndipo n'zovuta kukwaniritsa kuwonongeka kwa maselo pamwamba pa malo omangira, ndipo thebonding sadzakhala olimba.

4.kupanikizika

Gluutsani pamwamba pa chinthu chomangika, ndikuyikani mphamvu pazinthu ziwiri zomangika nthawi yake, kuti zomatira za pur hot kusungunula zimadzaza mabowo pamwamba pa thupi lomangika, ndipo ngakhale kulowa m'mabowo akuya ndi ma capillaries kuti muchepetse zolakwika zomangira. Choncho, bwino ntchito kukakamiza pa kugwirizana. Itha kulimbikitsanso kuthawa kwa gasi pamwamba pa chinthu chomangika, kuchepetsa malo omangira dzenje, ndikuwonjezera kulimba kolumikizana.