Yuav ua li cas cam khwb cia polyurethane ua npuas ncauj?
Casting polyurethane ua npuas ncauj tsis yog foob pob hluav taws, tab sis nws yooj yim mus xaus nrog cov kauj ruam nplaum yog tias koj hla cov kauj ruam. Txawm hais tias koj tau ua qauvCov Ntaus Kev Cai Hlualossis DIY-ing padding, ntawm no yog yuav ua li cas ntsia hlau rau nws.
Koj yuav xav tau dab tsi
Ntu A (Isocyanate) + Tshooj B (Polyol Muab Ntxiv) (ob lub cev ua kua)
Ntxiv(catalysts, surfactants, tshuab cov neeg sawv cev - xyuas koj hom ua npuas ncauj).
Pwm(silicone, yas, lossis hlau - tsis-lo lossis coated nrogTus neeg sawv cev).
Sib tov cov cuab yeej: Teev, sib xyaw khob, do pas (lossis cov hluav taws xob tov khoom rau cov batches loj).
Ppe: Nitrile hnab looj tes, goggles, ua pa(Isocyanates tsis yog tso dag).
Ventilated ntshiv(chav nres tsheb, rhiav -Tsis yog koj chav ua noj).
Cov txheej txheem ib qib zuj zus
1. Kev nyab xeeb ua ntej
Xaus: hnab looj tes, ncaws pob, ua pa ua pa.
Qhib lub qhov rais lossis siv lub hood fum.Isocyanate fumes =} tsis zoo siab ntsws.
2. Sib tov cov Cheebtsam
Hnyav yooj yim: Ua raws li cov khw muag khoom qhov sib piv (piv txwv li, 1: 1, 2: 1 feem a rau b).
Sib tov ceev: Muab Tshooj Part A + Tshooj B + Ntxiv rau hauv ib lub khob. Do zoo li koj qhov project nyob ntawm nws (nws ua).
Ua haujlwm nrawm: Koj tau 30-90 vib nas this ua ntej nws pib ua npuas ncauj.
3. Ncuav rau hauv pwm
Ncuav rau hauv ib qho kev taw tes du kom tsis txhob muaj cua hnab.
Sau cov pwm 1/3 puv - ua npuas ncauj3–5xnws cov kua ntim.
4. Cia nws nce + kho
Theem Loj: 5-10 feeb (ua npuas ncauj (ceev hlob zoo li mov ci khob noom cookie).
Kho lub sijhawm: 24 teev rau tag nrho hardness (flexible ua npuas dej yuav siv tsawg dua).
5. Txhim Kho + Trim
Pop lub npaus tawm maj mam. Siv rab riam ntse / sander los ntxuav cov npoo.
Cov lus qhia ntxiv kom tsis txhob muaj kev puas tsuaj
Kuaj cov zauv ua ntej: Sib xyaw me me batches mus tham hauv ntom / nthuav dav.
Tswj kub: Worest ntshoo=20 - 25 degree. Txias=maj mam nce; kub=messy overexpansion.
Txau Pwm Tso: Tshwj tsis yog koj xav ua npuas dej ua rau koj tus pwm mus ib txhis.
Do zoo li tus neeg vwm: Tsis tiav tov =} tsis ncaj ua npuas ncauj(xav tias Lumpy ncuav mog qab zib).
Kev daws teeb meem nquag
| Teeb meem | Kho |
|---|---|
| Ua npuas ncauj npuaj | Ntxiv ntau cov catalyst / Tshuab tus neeg sawv cev. |
| Nplaum me ntsis | Sib tov ntev dua lossis nce ib feem ib feem. |
| Tuab heev | Txo qhov ib lossis ntxiv ntxiv cov neeg sawv cev. |
| Pwm Sticking |
Xuab zeb pwm ua rau cov neeg sawv cev hnyav. |
Saj zawg zog vs. rigid ua npuas ncauj: Dab tsi yog qhov txawv?
Tsis tawv(Rau Cushions, grips): Siv ntau polyol, tsawg dua yog ownocyanate. Ntxiv squish.
Tawv(Rau cov txheej txheem qhov chaw, stroller ntas): ntau dua isocyanate piv. Pob zeb-nyuaj ua tiav.
Vim li cas qhov teeb meem no rau cov qauv tsim
Polyurethane ua npuas ncauj yog cov ntses zais cia rau:
Ergonomic leeguas tsis muaj tes.
Poob siab-abrowbent log(Lub tsho tiv no hlau haub nrog ua npuas ncauj rau cov nyiaj thauj ntsiag to).
Kev Cai Lub Rooj Zaum(Vim tias cov menyuam yaus tus kws txiav txim plaub ntug zoo siab).
Daim Ntawv Zaum Kawg: Polyurethane yog ntau yam tab sis Finicky. Pib me me, sau koj cov kev sib xyaw, thiabTsis txhob hla PPECov. Ib zaug mastered, koj tuaj yeem ua npuas yuav luag txhua yam - los ntawmCov Cuab Yeej Siv Khoom Siv Strollerrau bespoke tus me nyuam iav.
(Xav tau kev cai ua npuas ncauj tsim qauv rau koj cov khoom lag luam? Peb ua cov cheem voodoo yog li koj tsis tas yuav. Peb sib tham.)