Cov yam ntxwv cuam tshuam rau Electroplating ntawm Hluav Taws Kub Kub Tubes: Tshuaj Nickel Deposition
Tso lus
Cov yam ntxwv cuam tshuam rau Electroplating ntawm Hluav Taws Kub Kub Tubes: Tshuaj Nickel Deposition
1.3 Kev ua haujlwm
Lub hom phiaj ntawm kev ua kom muaj zog yog los tsim ib txheej nyias ntawm cov txheej txheem hlau uas muaj txiaj ntsig zoo rau ntawm qhov chaw ntawm ABS resin, uas yog ib qho catalyst rau cov tshuaj tiv thaiv redox thaum lub sij hawm tshuaj kub plating. Thaum npaj cov tshuaj tua kab mob, nws yog ib qho tsim nyog yuav tsum tau them sai sai rau qhov sib faib ntawm activator, dej, thiab acid. Thaum stirring, maj mam ncuav cov kua qaub rau hauv dej, thiab tom qab ntawd ntxiv cov activator. Qhov no yog vim qhov kev ua kom zoo li qub yog colloidal palladium thiab stannic acid colloid. Stannic acid colloid yog lub cev tiv thaiv ntawm colloidal palladium, ua rau cov tshuaj colloidal palladium ua kom ruaj khov. Yog tias txoj kev npaj tsis tsim nyog thiab cov khoom tsim tawm colloid palladium tsis yog colloidal palladium, qhov kev ua haujlwm tsis zoo heev.
1.4 Gel tso tawm
Cov qauv qhib yuav tsum tau kho degumming (10 feem pua sulfuric acid). Qhov no yog vim hais tias tom qab tus qauv ABS yog immersed nyob rau hauv lub colloidal palladium activation tov, lub nto adheres rau atomic micelles raws li cov tub ntxhais. Txhawm rau palladium rau catalyze, kev kho degumming yuav tsum tau ua kom tshem tawm SnO2-3, Sn2 ntxiv, thiab Cl - ntshav txuas rau sab nraud ntawm palladium. Lub gelation kub yuav tsum tswj ntawm 40-50 degree thiab lub sij hawm yuav tsum yog 3-5 feeb.
1.5 Chemical nickel deposition
Qee lub sij hawm, qhov tshwm sim dawb paug tuaj yeem tshwm sim thaum lub sijhawm tshuaj lom neeg nickel deposition, uas yog qhov xwm txheej uas qee qhov tsis tau plated. Cov laj thawj tseem ceeb yog raws li nram no: ① roughening tsis raug; ② tsis txaus lossis tseem tsis tau txuas nrog activator; ③ tsis txaus roughening thiab ua kom cov txheej txheem muaj peev xwm; ④ tsis txaus nag lossis daus peev ntawm cov tshuaj plating tov. Yog tias muaj ntau qhov chaw dawb paug tshwm sim los ntawm tshuaj lom neeg nickel deposition, nws yuav tsum tau ua tib zoo tshawb xyuas qhov ua rau thiab ua qhov kev sim tshiab electroplating. Tsis tas li ntawd, xyuam xim rau cov tshuaj nickel nag lossis daus. Raws li qhov concentration txo qis nrog kev siv tas li, nws yuav tsum tau ntxiv raws li kev kho mob. Tsis tas li ntawd, vim muaj kev sib raug zoo ntawm nag lossis daus thiab pH tus nqi, nws yog ib qho tsim nyog yuav tsum tsis tu ncua xyuas thiab kho tus nqi pH ntawm cov tshuaj nickel nag lossis daus.
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