PU ua npuas ncauj yog dab tsi?

Polyurethane ua npuas ncauj yog tsim los ntawm cov tshuaj tiv thaiv ntawm ob lub hauv paus ntsiab lus:

Polyol

Isocyanate

Thaum cov ntaub ntawv no sib tov nyob rau hauv kev tswj xyuas, lawv hnov ​​​​mob tsim polyurethane polymers thiab tsim cov qauv cellular uas ua rau ua npuas ncauj nws cov khoom tshwj xeeb.

Ntxiv nrog rau ob lub ntsiab lus tseem ceeb no, cov tuam txhab tsim khoom siv ntau yam khoom siv los hloov kho cov yam ntxwv ntawm kev ua haujlwm thiab ua tau raws li cov kev thov tshwj xeeb.

Polyol: Lub Foundation ntawm PU Foam

Polyol yog ib qho tseem ceeb ntawm cov khoom siv raw hauv polyurethane ua npuas ncauj.

Nws ua raws li cov resin tivthaiv thiab cuam tshuam rau lub npuas qhov yooj, softness, thiab tag nrho kev ua tau zoo.

Kev ua haujlwm ntawm Polyol

Polyol pab txiav txim siab:

Qhov ntom

Elasticity

Yooj yim

Cell qauv

Cov yam ntxwv ntawm kev nplij siab

Ntau hom polyol tuaj yeem xaiv tau nyob ntawm seb qhov khoom kawg yuav tsum muaj cushioning mos, rwb thaiv tsev nruj, lossis kev txhawb nqa.

Cov ntawv thov cuam tshuam los ntawm Polyol

Piv txwv muaj xws li:

Memory ua npuas ncauj hauv ncoo

Automotive armrests

Lub rooj zaum

Kev txhawb nqa kev kho mob

Industrial tiv thaiv Cheebtsam

Kev xaiv ntawm polyol ua lub luag haujlwm tseem ceeb hauv kev ua tiav cov khoom lag luam xav tau.

Isocyanate: Cov Reactive Cheebtsam

Isocyanate yog cov khoom siv thib ob uas siv hauv polyurethane ua npuas ncauj ntau lawm.

Nws reacts nrog polyol los tsim cov polyurethane polymer network uas muab cov npuas nws lub zog thiab cov qauv.

Kev ua haujlwm ntawm Isocyanate

Isocyanate influences:

Mechanical zog

Compression kuj

Durability

Cov qauv kev ruaj ntseg

Foam expansion cwj pwm

Qhov piv ntawm polyol thiab isocyanate yog ua tib zoo tswj kom ua tiav cov khoom zoo ib yam.

Qhov tseem ceeb ntawm Kev Ntsuas Zoo

Kev sib piv tsis raug tuaj yeem ua rau:

Kev kho tsis zoo

Deg tsis xws luag

Txo lub zog

Tsis sib haum xeeb

Dimensional instability

Precision formulation yog li tseem ceeb rau kev txhim kho kev tsim khoom.

Blowing Agents: Tsim cov qauv ua npuas ncauj

Cov qauv cellular tshwj xeeb ntawm PU ua npuas ncauj yog tsim los ntawm kev siv tshuab tshuab.

Cov ntaub ntawv no tsim cov roj thaum lub sij hawm cov tshuaj tiv thaiv, ua rau cov npuas dej nthuav dav thiab tsim ntau lab lub hlwb me me.

Kev ua haujlwm ntawm Blowing Agents

Lawv pab tswj:

Ua npuas ncauj ntom ntom

Cell loj

Kev ua haujlwm thermal rwb thaiv tsev

Khoom hnyav

Cov tshuab tshuab sib txawv tuaj yeem siv tau raws li qhov xav tau ntawm ib puag ncig thiab cov khoom tshwj xeeb.

Kev cuam tshuam rau Kev Ua Haujlwm Kawg

Tshuab tshuab ncaj qha cuam tshuam rau:

Lub teeb nyhav

Lub zog nqus

Rwb thaiv tsev efficiency

Nto zoo

Kev xaiv cov tshuab ua kom haum yog qhov tseem ceeb tshwj xeeb hauv kev ua npuas ncauj nruj thiab kev siv rwb thaiv tsev.

Catalysts: Tswj cov tshuaj tiv thaiv

Catalysts ceev thiab tswj cov tshuaj tiv thaiv ntawm polyol thiab isocyanate.

Yog tsis muaj catalysts, ua npuas ncauj ntau lawm yuav tsis muaj txiaj ntsig thiab tsis yooj yim rau kev tswj.

Kev ua haujlwm ntawm Catalysts

Catalysts pab tswj:

Cov tshuaj tiv thaiv ceev

Kev nthuav dav

Lub sijhawm kho

Ntau lawm efficiency

Kev xaiv catalyst kom ntseeg tau tias kev tsim khoom zoo ib yam thiab txhim kho kev tsim khoom.

Surfactants: Stabilizing Cell Structure

Surfactants tau ntxiv los txhim kho ua npuas ncauj ruaj khov thaum nthuav dav.

Lawv pab tswj kev tsim ntawm tes thiab tswj kom muaj cov qauv sab hauv.

Cov txiaj ntsig ntawm Surfactants

Txhim kho cell uniformity

Zoo dua saum npoo

Ua npuas ncauj stability

Raws li lub cev muaj zog

Cov qauv ntawm tes ruaj khov ua rau muaj txiaj ntsig zoo rau cov khoom zoo thiab kav ntev.

Flame Retardants: Txhim kho hluav taws kev ua tau zoo

Ntau daim ntawv thov kev lag luam xav tau kev txhim kho hluav taws kub.

Cov nplaim retardant additives tuaj yeem muab tso rau hauv polyurethane foam formulations los txhim kho kev nyab xeeb kev ua haujlwm.

Cov ntawv thov siv

Nplaim taws- PU ua npuas ncauj yog dav siv hauv:

Automotive interiors

Cov ntaub ntawv tsim kho

Public tsheb thauj mus los zaum

Cov cuab yeej siv tshuab

Kev lag luam sib txawv yuav xav tau kev ua raws li cov qauv kev nyab xeeb tshwj xeeb thiab cov cai.

Pigments thiab Xim Additives

Xim additives yog siv thaum cov neeg siv khoom xav tau cov khoom tshwj xeeb tshwm sim.

Pigments tuaj yeem muab tso ncaj qha rau hauv daim ntawv ua npuas ncauj thaum tsim khoom.

Cov txiaj ntsig

Cov xim zoo ib yam thoob plaws hauv cov khoom

Txhim kho qhov muag pom

Hom -kev hloov kho tshwj xeeb

Txo kev xav tau ntxiv cov txheej txheem tiav

Customized xim yog feem ntau siv rau hauv cov khoom siv thiab cov khoom lag luam muaj npe.

Ntxiv Functional Additives

Nyob ntawm daim ntawv thov, cov tuam txhab lag luam tuaj yeem qhia cov khoom siv tshwj xeeb los txhim kho kev ua haujlwm.

Piv txwv muaj xws li:

UV stabilizers

Anti- cov tshuaj zoo li qub

Antimicrobial additives

Cov ntaub ntawv txhawb zog

Hnav- tiv thaiv kev hloov pauv

Cov additives no tso cai rau polyurethane ua npuas ncauj kom tau raws li kev xav tau ntawm kev lag luam.

Yuav ua li cas tshuaj Formulation cuam tshuam PU Foam Performance

Qhov kev ua tau zoo kawg ntawm PU ua npuas ncauj tsis yog nyob ntawm tus kheej cov tshuaj, tab sis kuj nyob ntawm seb lawv cuam tshuam li cas hauv cov qauv.

Cov khoom tseem ceeb cuam tshuam los ntawm kev tsim muaj xws li:

Qhov ntom

Txiav qhov hnyav, lub zog, thiab durability.

Hardness

Muaj feem xyuam rau kev nplij siab, kev txhawb nqa, thiab kev thauj khoom -cov peev txheej.

Elasticity

Influences cushioning thiab rov ua haujlwm.

Thermal rwb thaiv tsev

Tseem ceeb heev rau kev tsim kho thiab kev lag luam rwb thaiv tsev daim ntaub ntawv.

Durability

Kev cuam tshuam rau lub sijhawm ntev - kev ua tau zoo thiab kev pabcuam lub neej.

Kev hloov kho me me tuaj yeem hloov pauv cov yam ntxwv ntawm cov khoom.

Vim li cas cov neeg yuav khoom yuav tsum nkag siab PU Foam Tshuaj

Nkag siab txog cov tshuaj siv hauv polyurethane ua npuas ncauj pab cov neeg yuav khoom:

Sib piv cov khoom muaj peev xwm

Ntsuas cov khoom zoo

Qhia meej txog kev ua haujlwm

Txhim kho cov khoom tsim kev txiav txim siab

Xyuas kom ua raws li cov qauv kev lag luam

Tus neeg tsim khoom paub txog yuav tsum muaj peev xwm pom zoo rau cov qauv tsim nyog tshaj plaws raws li daim ntawv thov thiab cov hom phiaj ua haujlwm.

Xaus

Polyurethane ua npuas ncauj yog tsim los ntawm kev ua tib zoo sib xyaw ua ke ntawm polyol, isocyanate, tshuab tshuab, catalysts, surfactants, thiab ntau yam kev ua tau zoo-txhim kho additives.

Txhua yam tshuaj ua lub luag haujlwm tshwj xeeb hauv kev txiav txim siab ua npuas ncauj qhov ntom ntom, lub zog, yoog raws, durability, thiab kev ua haujlwm tag nrho.

Los ntawm kev nkag siab txog cov tshuaj lom neeg yooj yim tom qab PU ua npuas dej, cov neeg yuav khoom tuaj yeem txiav txim siab txog kev paub ntau ntxiv thiab xaiv cov tshuaj polyurethane rau lawv cov kev xav tau tshwj xeeb.