Izinto ezichaphazela umgangatho weengubo zomgubo

Imiba echaphazela ukuNqanawa kwe Iingubo zePowder

Ukugquma umgubo luhlobo olutsha lwe-solvent-free 100% yokugquma umgubo oqinileyo. Ineendidi ezimbini eziphambili: i-thermoplastic powder coatings kunye neengubo zomgubo we-thermosetting. Ipeyinti yenziwe nge-resin, i-pigment, i-filler, i-ejenti yokunyanga kunye nezinye izinto ezincedisayo, ezixutywe kumlinganiselo othile, kwaye zilungiswe ngokutshisa okutshisa kunye nokuhlutha kunye nokuhlutha. Zigcinwa kwiqondo lobushushu begumbi, ezinzile, electrostatic ukutshiza okanye fluidized ebhedini dip ukutyabeka, ukufudumeza kunye nokubhaka inyibilika ukuqina, ukuze ukwakheka ifilimu yokwambathisa egudileyo kwaye ixesha elide, ukufezekisa injongo umhombiso kunye nokhuseleko umhlwa.

Okubizwa ngokuba ngumgangatho wepeyinti kuthetha ukuba ifilimu yepeyinti ihamba kakuhle emva kokusetyenziswa. Umphezulu womgangatho olungileyo kufuneka ungabinazitenxo ezifana nexolo le-orenji, amanqaku ebrashi, i-corrugations, kunye nemingxuma eshwabeneyo. Ngokuqhelekileyo, abantu bajonga ngqo iliso leze ngokuthelekisa isampuli kunye nesampulu eqhelekileyo ukuvavanya inqanaba lokulinganisa ifilimu. Le ndlela iyahluka ukusuka kumntu ukuya kumntu kwaye inokuzithoba okuqinileyo. Indlela yokuskena ubude obungamaza esetyenziswa kushishino lweemoto ukubonisa ubume bomphezulu wefilimu yokugquma inesiphumo esinesiqingatha sobungakanani. I-long-wave (10-0.6 mm) kunye ne-short-wave (0.6-0.1 mm) i-scans isetyenzisiweyo, kwaye ixabiso elilinganisiweyo liphakathi kwe-0 kunye ne-100. Ixabiso eliphantsi, i-smooth-coating surface kunye nokuphucula umgangatho.
Imiba echaphazela ipropathi yomgangatho wokugquma umgubo ikakhulu ibandakanya imiba emihlanu:

Okokuqala, i-viscosity enyibilikayo yeengubo zomgubo

Kwi-thermosetting powder coatings, kwinkqubo yokunyibilika kokunyibilika, kunye ne-cross-link yokunyanga ukuphendula, ukuphakama kweqondo lokushisa, ngokukhawuleza ukusabela kokunyanga, ngokukhawuleza i-viscosity yenkqubo iphakama, ixesha lokuhamba lifutshane, kunye nomgangatho ophantsi. Ngoko ke, xa ukhetha i-resin, sikhetha i-resin ene-viscosity ephantsi, ebonisa umsebenzi ocothayo, ukwenzela ukuba i-coating ingaba nexesha elaneleyo lokulinganisa.

Okwesibini, ukulinganisa izongezo

Izixhobo ezifanelekileyo zokulinganisa zongezwa kwi-powder coating formulation. Xa umgubo unyibilika, ezi zongezo zinokunciphisa ngokukhawuleza ukuxinana komphezulu wengubo, zikhuthaze ukuhamba ngokukhawuleza kokugquma ngaphambi kokunyanga kunye nokuphelisa okanye ukunciphisa i-orenji yamaxolo, amanqaku ebrashi kunye nama-ripples. , Ukucutheka kunye nezinye iziphene zomhlaba.

Okwesithathu, ukhetho lwe-pigment

Ngaphambi kokudibanisa imibala, akufuneki sihambelane kuphela ne-hue yemibala eyahlukeneyo, kodwa kwakhona siqwalasele ukufunxa kweoli kunye nobungakanani bebala ngalinye. Ukufunxwa kwe-oyile yee-pigments ze-inorganic kuncinci kakhulu kunezo ze-organic pigments, ngoko sinokuzama ukuphepha ukusetyenziswa kwe-organic pigments. Umlinganiselo opheleleyo wemibala eyahlukeneyo kufuneka ulungelelaniswe ngokweemfuno zabathengi zokugquma. Nokuba i-pigment inokufunxa i-oyile ephantsi, ukugqithisa kuya kubangela ukuba umgangatho ube mandundu.

Okwesine, ukhetho lokuzalisa

Kuyaziwa ukuba iifayili kwi-powder coatings azigcini nje ukunciphisa iindleko kodwa ziphucula iipropati ze-powder coating, ngokukodwa ukuchasa ukunxiba. Nangona kunjalo, ukugcwaliswa okungafanelekanga kuya kunika umgubo ukubetha okubulalayo. Kwimfuzaral, ukufunxwa kwe-oyile ye-barium sulfate kuncinci kune-calcium carbonate, i-kaolin, i-mica powder, i-quartz powder, i-silicon powder, njl. ukufunxwa kwe-oyile kwaye kokukhona kuhlwempuzeka ukulinganisa.

Okwesihlanu, inkqubo yokunyanga

Kukho inkqubo yokunyuka kweqondo lokushisa xa umgubo ubhakwa. Isantya somlinganiselo wokufudumeza sinempembelelo ebaluleke kakhulu ekulinganisweni komgangatho wokugquma.
Ngamafutshane, ngokuqwalasela i-overall isakhiwo sefomula, kufuneka siqale sikhethe i-viscosity ephantsi, i-resin ephendula ngokukhawuleza njengeyona nto isisiseko, ukongeza inani elaneleyo le-ejenti yokulinganisa, kunye nokusebenzisa i-pigments kunye nefayili (i-barium sulfate) kunye ne-oyile ephantsi yokufunxa. Ukongezelela, iiparamitha zenkqubo zihlengahlengiswa ngokufanelekileyo kwinkqubo yokukhupha kunye nokugaya ukufezekisa ipropati yokubonakala ngakumbi.