Cov lus qhia siv cov kua silicone muaj ntau yam, suav nrog kev faib ua feem, degassing, nchuav thiab txhuam, kho thiab demoulding, thiab lwm yam. Ntawm no yog qee cov lus qhia ntxaws txog kev siv kua silicone:
1. Kev sib faib thiab sib xyaw
Qhov tseeb proportioning: Qhov sib piv ntawm cov kua silicone thiab curing agent yuav tsum tau tswj kom meej. Feem ntau hais lus, qhov sib piv yog 100: 2, uas yog, 2 grams ntawm curing agent yog ntxiv rau txhua 100 grams ntawm silicone. Rau qee yam tshwj xeeb ntawm cov kua silicone (xws li cov kua silicone ntxiv), qhov piv ntawm cov khoom A thiab B yuav yog 1: 1, uas yuav tsum tau txiav txim siab raws li cov khoom siv.
Kev sib xyaw ua ke tag nrho: Siv lub stirrer los sib tov cov silicone thiab curing agent kom huv si thiab sib npaug kom ntseeg tau tias tsis muaj cov tshuaj granular nyob. Kev sib xyaw tsis sib xws tuaj yeem ua rau kev kho tsis tiav ntawm silicone lossis degradation ntawm nws cov kev ua tau zoo.
2. Degassing npuas
Lub tshuab nqus tsev vacuum: Cov kua silicone npaj yuav tsum tau degassed nrog lub tshuab nqus tsev. Muab cov khoom siv silicone rau hauv lub tshuab nqus tsev thiab nqus nws. Feem ntau, cov npuas tuaj yeem raug tshem tawm li ntawm kaum feeb. Nco ntsoov tias lub sijhawm nqus tsev yuav tsum tsis txhob ntev dhau los tiv thaiv cov silicone los ntawm kev sib txuas thiab kho ntxov ntxov.
Sawv ntsug thiab saib xyuas: Tom qab cov npuas tas lawm, cia cov silicone sawv ntsug ib ntus txhawm rau saib seb cov npuas tshiab puas tsim tawm. Yog tias tsim nyog, cov txheej txheem tshem tawm npuas tuaj yeem rov ua dua.
3. Infusion thiab pleev xim
Slow infusion: Ncuav cov txheej txheem ua kua silicone raw khoom maj mam ntawm cov khoom lossis hauv pwm, tso cai rau nws ntws mus rau hauv txhua lub ces kaum. Ua tib zoo saib xyuas kev tswj cov infusion ceev kom tsis txhob tsim cov npuas tshiab.
Kev pleev xim rau ntau txheej: Rau cov khoom lossis pwm uas yuav tsum tau pleev xim rau, lawv yuav tsum tau pleev xim rau ntau txheej. Tom qab txhua txheej ntawm tha xim, tos kom cov silicone kom khov ua ntej pleev xim rau lwm txheej. Thaum lub sij hawm cov txheej txheem tha xim, cov ntaub ntawv txhawb zog xws li daim ntaub fiberglass tuaj yeem ntxiv los txhim kho lub zog thiab ua haujlwm ntawm cov pwm.
4. Kho thiab demoulding
Tswj curing tej yam kev mob: Lub curing ceev ntawm cov kua silicone yog ze ze rau qhov kub thiab txias. Nyob rau hauv chav tsev kub (xws li 25 degree), silicone feem ntau yuav siv sij hawm 4-6 teev los kho tag nrho. Yog tias koj xav tau kev kho kom ceev ceev, koj tuaj yeem ua kom qhov kub thiab txias kom tsim nyog (xws li cua sov rau 60 degree ). Txawm li cas los xij, koj yuav tsum tau ceev faj kom tsis txhob muaj qhov kub thiab txias heev uas yuav ua rau kev ua haujlwm ntawm silicone degradation lossis deformation.
Sij hawm demoulding: Tom qab cov silicone tau kho tag, koj tuaj yeem ua haujlwm demoulding. Ceev faj thaum demoulding kom tsis txhob ua rau pwm lossis cov khoom puas. Rau cov khoom lossis pwm nrog cov duab nyuaj, tus neeg sawv cev demoulding tuaj yeem siv los pab demoulding.
V. Lwm yam ceev faj
Cia thiab khaws cia: Cov kua silicone uas tsis siv yuav tsum tau muab kaw thiab khaws cia rau hauv qhov chaw txias, qhuav, qhov cua, kom deb ntawm tshav ntuj ncaj qha thiab qhov kub thiab txias. Silicone uas tsis tau siv ntev ntev yuav tsum tau kuaj xyuas tsis tu ncua kom pom tias nws qhov kev ua tau zoo tau hloov pauv.
Kev tu thiab tu: Tom qab siv, cov cuab yeej thiab cov cuab yeej xws li cov agitators thiab pwm yuav tsum tau muab ntxuav kom huv si raws sij hawm kom tsis txhob muaj cov silicone residues uas yuav ua rau kev ua haujlwm tsis zoo thaum siv tom ntej. Nyob rau tib lub sijhawm, tsis tu ncua tswj thiab pabcuam cov pwm kom ntev nws lub neej kev pabcuam.