Lub hauv paus ntsiab lus ntawm kev tsim khoom ntawm cov khoom siv rwb thaiv tsev ua npuas dej
Cov Tshuaj Tsuag Ua Npuas Ncauj (SPF) yog cov khoom siv rwb thaiv tsev kub siab heev uas ua los ntawm kev tswj hwm cov tshuaj tiv thaiv ntawm ob lub ntsiab lus tseem ceeb ntawm cov kua, polyol resin thiab isocyanate. Thaum ob lub khoom no sib xyaw ua ke hauv lub cuab yeej txau tshwj xeeb, cov tshuaj tiv thaiv polymerization sai tshwm sim hauv qab kev ua haujlwm ntawm cov catalyst, thiab cov pa roj carbon dioxide raug tso tawm tib lub sijhawm, ua rau cov khoom sib xyaw nthuav dav 30-60 zaug hauv ob peb feeb, thaum kawg tsim cov ua npuas ncauj polyurethane nrog cov khoom rwb thaiv tsev kub zoo heev.
Lub hauv paus ntawm cov txheej txheem tshuaj lom neeg no yog qhov kev sib ntxiv ntawm cov tshuaj polymerization ntawm isocyanate (-NCO) thiab polyol (-OH), thiab cov tshuaj ua npuas ntawm isocyanate thiab dej los tsim cov pa roj carbon dioxide. Qhov sib npaug ntawm ob qho kev sib tw no txiav txim siab qhov kev ua tau zoo kawg ntawm cov ua npuas ncauj, thiab qhov no yog qhov chaw uas cov tshuaj polyurethane ua lub luag haujlwm tseem ceeb.
Kev ua tau zoo heev ntawmMXC-BDMAcov tshuaj ua kom lub cev muaj zog
Peb lub MXC-BDMA (N,N-dimethylbenzylamine, CAS 103-83-3) yog ib qho tshuaj amine catalyst zoo heev uas tau tsim los rau polyurethane ua npuas ncauj, qhia txog ntau yam txiaj ntsig zoo hauv kev tsim cov khoom siv rwb thaiv tsev:
1. Kev tswj hwm cov tshuaj tiv thaiv kom meej
- Muab qhov sib npaug zoo tagnrho ntawm cov tshuaj ua npuas / gelling
- Xyuas kom meej tias muaj qhov nkhaus nce siab thiab lub sijhawm kho kom ruaj khov
- Haum rau ntau qhov kub thiab txias thiab av noo sib txawv
2. Zoo heev ua npuas ncauj zoo
- Tsim ib lub qauv kaw-cell zoo sib xws thiab zoo (closed-cell ratio> 90%)
- Txhim kho qhov ua npuas dej thaum ntxov thiab ua kom tiav qhov kev sau tiav
- Txhim kho lub zog sib txuas ntawm cov ua npuas ncauj thiab ntau yam substrates
3. Cov txiaj ntsig ntawm cov txheej txheem
-Haum rau cov txheej txheem tsim cov khoom muaj zog heev
- Sib xws nrog ntau yam khoom siv ua kom qhuav (HFC, HFO, dej, thiab lwm yam)
- Txo cov ntxhiab tsw ntawm cov amine thiab txhim kho qhov chaw tsim kho
Cov tshuaj catalysttxoj kev xaiv lub kaw lus
Thaum tsim cov tshuaj tsuag ua npuas ncauj, kev xaiv cov catalysts yuav tsum xav txog cov yam tseem ceeb hauv qab no:
1. Cov huab cua: qhov cuam tshuam ntawm qhov kub thiab txias thiab av noo rau qhov kev ua haujlwm
2. Cov yam ntxwv ntawm cov khoom siv: qhov yuav tsum tau sib txuas rau ntau yam khoom siv xws li hlau, ntoo, pob zeb, thiab lwm yam.
3. Cov txheej txheem tsim kho: qhov sib txawv ntawm kev txau tes thiab kev tsim khoom tas mus li
4. Cov ntsuas kev ua tau zoo: cov kev cai tshwj xeeb xws li kev ua tau zoo ntawm cov cua sov, qhov porosity kaw, thiab qhov ntsuas hluav taws
MXC-BDMA siv tau ua ke nrog cov organic metal catalysts (xws li stannous octoate) los txhim kho qhov kev ua haujlwm ntawm cov tshuaj tiv thaiv los ntawm kev sib koom ua ke. Cov kev daws teeb meem uas peb pom zoo suav nrog:
- Kev rwb thaiv tsev sab nraud ntawm phab ntsa: MXC-BDMA yog lub kaw lus tseem ceeb uas ua kom nws khov sai
- Kev rwb thaiv tsev txias: cov txheej txheem catalyst sib xyaw ua ke los txhim kho qhov ceev ntawm lub cell kaw thiab qhov ruaj khov ntawm qhov ntev
- Kev rwb thaiv tsev ntawm cov kav dej hauv kev lag luam: cov mis tshwj xeeb los hloov kho rau kev tsim kho qhov chaw nkhaus nyuaj
Kev txhawb nqa thiab kev pabcuam tshaj lij
Peb muab kev txhawb nqa kev txawj ntse rau cov chaw tsim ua npuas dej thiab cov tuam txhab tsim kho:
- Kev tsim cov mis: ua kom zoo dua qhov system catalyst raws li koj cov khoom siv thiab cov khoom xav tau
- Cov lus qhia txog txheej txheem: muab cov lus qhia tseem ceeb xws li kub thiab siab
- Kev tswj xyuas zoo: pab tsim kom muaj ib lub kaw lus xeem kev ua tau zoo tiav
- Kev txhawb nqa hauv tsev kawm ntawv: cov neeg ua haujlwm txawj ntse qhia kev tsim khoom thiab kev daws teeb meem
Tau txais cov ntaub ntawv khoom
Yog xav paub ntxiv txog MXC-BDMA catalyst los yog xav thov kev kuaj qauv, thov hu rau peb pab neeg kev siv cov hauv qab no:
Email: info@mingxuchem.com
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Xaiv cov tshuaj catalyst tshaj lij kom ua rau koj cov khoom ua npuas dej sawv tawm hauv kev ua haujlwm rwb thaiv tsev thermal, kev tsim kho zoo thiab kev ruaj khov zoo!
Lub sijhawm tshaj tawm: Tsib Hlis-09-2025