Yuav ua li cas txo qhov tsis hnov ​​tsw thaum lub sij hawm txhaj tshuaj molding?

1, Siv cov khoom ntshiab ntau dua
Hauv ntau cov yas, tshwj xeeb tshaj yog nyob rau hauv PVC, styrene, poly (ethyl acetate), acrylate thiab lwm yam yas, cov seem ntawm cov kab monomers tsim cov ntxhiab tsw phem. Cov ntxhiab tsw tuaj yeem raug tshem tawm los ntawm kev siv cov resin nrog me ntsis residual monomer. Yog tias cov resin nws tus kheej tsis muaj ntxhiab, nws kuj yuav muaj txiaj ntsig zoo. Piv txwv li, DuPont yas qhov chaw ua cov nroj tsuag tau tsim ib qib tshiab ntawm acetal copolymer, uas tso tawm cov ntxhiab me ntsis thaum lub sij hawm txhaj tshuaj.
2, Hloov cov additives
1. Lub tertiary amine catalyst siv nyob rau hauv zus tau tej cov polyurethane ua npuas ncauj feem ntau coj muaj zog tsw, thiab pos huab rau sab hauv lub qhov rais ntawm lub tsheb. Txoj hauv kev los daws qhov teeb meem no yog nrhiav kev hloov pauv rau cov amines. Ib qho kev ntsuas yog siv cov tshuaj polyhydroxy. Polyhydroxy compounds tsis yog tsuas yog cov khoom ntawm polyurethane molecular saw, tab sis kuj muaj kev ua haujlwm catalytic. Qee cov tshuaj polyhydroxy tuaj yeem hloov tau ib nrab ntawm tertiary amine catalyst, kom cov ntxhiab tsw ntawm cov khoom tau txais yuav tsis muaj zog.
2. Phenol stabilizers siv nyob rau hauv PVC extrusion los yog calendering txheej txheem feem ntau hloov los ntawm tsawg-odor zinc stabilizers. Tin octanoate, lub tshav kub stabilizer, kuj yog siv nyob rau hauv lub tsheb PVC cov khoom vim nws tsis tshua muaj tsw thiab tsawg atomization yam ntxwv. Cov roj txiv roj xws li erucic acid thiab oleic acid muaj ntxhiab tsw ntau dua li amine lubricants ua los ntawm cov tsiaj extract roj (siv rau polyolefin thiab styrene cov khoom ntim khoom noj).
3, Ntxiv adsorbent
Yog tias ib qho me me ntawm zeolite (ib qho aluminosilicate adsorbent) tau ntim rau hauv cov polymer, nws tuaj yeem ua lub luag haujlwm ntawm kev tshem cov ntxhiab ntawm cov khoom. Lub zeolite muaj ntau cov kab noj hniav siv lead ua, uas tuaj yeem ntes cov roj molecules me me nrog tsw. Cov molecular adsorbent tau ua tiav rau cov kav dej polyolefin extrusion, txhaj tshuaj thiab extrusion tshuab moulding ntim, cais ntim cov ntaub ntawv, extruded txheej ntim cov ntaub ntawv thiab sealing polymers, Molecular adsorption hmoov kuj tuaj yeem muab ntxiv rau cov yas raws li cov dej noo nqus kom tshem tawm cov dej vapor, uas tseem yuav pab cov khoom yas tsim cov ntxhiab tsw.