Yam Tseem Ceeb rau Adhesive Selection

Yam Tseem Ceeb rau Kev Xaiv Adhesive ----Technical Principles and Practical Selection Criteria


The fundamental function of adhesives is to coat the surfaces of adherends and bond them together. Thaum tsim cov khoom sib txuas ua ke, thawj qhov tseem ceeb yog xaiv cov nplaum tsim los ntawm ntau hom muaj. Hauv qab no yog ob peb yam tseem ceeb uas cuam tshuam rau kev xaiv nplaum.

1. I. Bonded Assemblies

Tag nrho cov txheej txheem kev ua haujlwm rau kev tsim cov kev sib koom ua ke ua haujlwm sib txawv ntawm kev cuam tshuam rau kev xaiv nplaum. Pre-bonding processing tsim tej yam kev mob ntawm lub adherend nto, uas ncaj qha txiav txim qhov kawg kev sib raug zoo kev ua tau zoo. Yog hais tias xws li deg tej yam kev mob hloov tsis tau, yuav tsum tau xaiv ib tug nplaum sib haum nrog rau qhov uas twb muaj lawm nto. Post-bonding machining txheej txheem ntawm cov tiav lawm bonded tivthaiv kuj yuav tsum tau coj mus rau hauv tus account thaum lub sij hawm adhesion xaiv. Yog tias qhov sib koom ua ke ua haujlwm ua ib qho kev sib koom ua ke nrog lwm cov khoom, cov khoom tuav ntawm cov nplaum nplaum yuav tsum ua raws li cov khoom sib dhos ntawm lwm cov txheej txheem ua haujlwm. Tsis tas li ntawd, lub cev daim ntawv ntawm cov nplaum (kua, muab tshuaj txhuam, zaj duab xis los yog khoom) yuav tsum phim cov kev tsim khoom siv rau kev sib koom ua ke.

1. II. Cov khoom ntawm Adherend Materials

Lub cev thiab tshuaj lom neeg cov khoom ntawm adherend cov ntaub ntawv, raws li zoo raws li qhov yuav tsum tau deg npaj txheej txheem ua ntej kev sib raug zoo, yog lwm yam tseem ceeb rau cov adhesive xaiv.Lub hom phiaj ntawm kev xaiv nyob rau theem no yog ua kom lub zog sib raug zoo nyob rau hauv lub sib koom tes interface, thiaj li hais tias lub sib koom tsis cohesively thaum lub sij hawm kuaj es tsis muaj kev cuam tshuam interfacial tsis ua hauj lwm ntawm cov nplaum thiab cov adherend. Tsuas yog nyob rau hauv txoj kev no tuaj yeem ua tiav lub zog siab tshaj plaws ntawm cov nplaum.

1. III. Lub zog ntawm Adherend Materials

Tsawg - lub zog substrates yuav tsis muaj zog dua li cov nplaum nws tus kheej, ua rau muaj kev sib txuam tsis zoo tshwm sim hauv qhov adherend es tsis yog cov nplaum nplaum.

Rau cov ntawv thov zoo li no, cov nplaum nplaum uas tau xaiv yuav tsum tso cai rau kev sib koom ua ke los tiv thaiv txhua yam kev pabcuam lub cev uas cov khoom siv tuaj yeem tiv taus, yam tsis muaj kev pheej hmoo ntawm kev sib koom ua ke. Nyob rau hauv cov ntaub ntawv no, txais yuav high-strength adhesives yuav ua rau over- specification ntawm adherend cov ntaub ntawv thiab tsis tsim nyog tus nqi ntxiv.

1. IV. Thickness ntawm Adherend Materials

Lwm yam uas tsis tuaj yeem saib tsis tau yog lub cev daim ntawv ntawm cov nplaum. Solvent-raws li adhesives yuav ua rau wrinkling ntawm cov npoo sib koom ua ke thaum sib txuas cov yeeb yaj kiab thermoplastic lossis lawv cov laminates sib xyaw; Txawm li cas los xij, thaum siv rau cov thermoplastics nruj, lawv feem ntau txo cov kev cai rau substrate nto pretreatment. Qhov tshwj xeeb geometry ntawm adherends feem ntau ua kom yooj yim rau kev siv cov khoom tshwj xeeb ntawm cov nplaum. Rau ntug kev sib txuas ntawm aluminium honeycomb lug thiab ca hlau los xij, kua primer ua ke nrog thermosetting nplaum zaj duab xis ntxiv nrog fiberglass npuag muab kev pom kev ua haujlwm zoo. Paste nplaum yog yooj yim rau fabricating tshav kub exchangers los ntawm kev koom nrog tooj liab fins thiab txhuas raj. Rau porous substrates, siab - viscosity los yog muab tshuaj txhuam - hom adhesives yog tsim nyog

1. V. Compatibility ntawm Adherends thiab Adhesives

Incompatibility ntawm adherend thiab nplaum yuav ua rau kev sib txuas tsis ua haujlwm ntawm kev sib koom ua ke. Qhov no muaj tseeb txawm tias tsuas yog ib feem ntawm cov nplaum yog incompatible nrog adherend. Piv txwv li no: hlau qhov chaw raug corroded los ntawm acidic los yog alkaline adhesives; plasticizers tsiv tawm ntawm cov yas hloov tau yooj yim rau hauv cov nplaum thiab ua rau kev sib txuas ntawm kev sib txuas; cov kuab tshuaj los yog cov tshuaj volatile uas muaj nyob rau hauv cov nplaum tawm tsam cov yeeb yaj kiab yas. Yog li ntawd, thaum twg los tau, cov ncauj lus kom ntxaws specifications yuav tsum tau muab nrog rau cov qauv nplaum. Qhov no yuav undoubtedly muaj txiaj ntsig rau ob lub tuam txhab nplaum thiab cov kws tshaj lij ua cov txheej txheem sib txuas.

1. VI. Kev Tiv Thaiv Kev Ruaj Ntseg Rau Kev Sib Txuas Lus

Thaum cov kev pab cuam ntawm kev sib koom ua ke feem ntau ua rau muaj kev txaus siab, lawv cov kev cia khoom feem ntau tsis saib xyuas. Qhov kev coj ua kom zoo yog coj mus rau hauv tus account qhov tsis zoo ntawm qhov kub thiab txias thiab cuam tshuam cov khoom sib koom ua ke tuaj yeem ntsib thaum lub sijhawm thauj mus los thiab khaws cia ntawm theem ntawm kev xaiv nplaum.

1. VII. Nqi

Thaum ntsuas tag nrho cov txheej txheem sib txuas ua ke tag nrho, qhov tsim nyog ntawm cov nplaum nplaum muaj qhov hnyav dua li nws cov nqi raw khoom. Tshaj li tus nqi ntawm cov nplaum nws tus kheej, kev ua haujlwm ntau lawm thiab lwm yam cuam tshuam yuav tsum tau muab tso rau hauv cov txheej txheem xaiv. Tsuas yog xaiv cov nplaum nplaum uas pheej yig tshaj yam tsis xav txog cov txheej txheem uas tau teev tseg hauv qab no yuav tsis tas xa cov txiaj ntsig zoo nyiaj txiag:

Zuag qhia tag nrho kev sib txuas efficiency

Kev yooj yim ntawm kev tau txais cov cuab yeej xav tau rau kev thov thiab kev ua haujlwm

Lub sijhawm voj voog siv los ntawm cov txheej txheem sib txuas

Cov nqi zog rau kev sib dhos thiab tshuaj xyuas

Pov tseg tiam ntim piv nrog lwm txoj kev koom nrog technologies

Feem ntau, ceev ceev - tack adhesives uas ua kom yooj yim kev sib txuas ua haujlwm yog tus nqi - siv tau txawm tias tus nqi siab dua me ntsis, yog tias lawv tshem tawm qhov xav tau ntawm kev sib dhos nyuaj jigs lossis pwm.