Koj puas paub dab tsi yog cov ntaub ntawv tseem ceeb ntawm polyurethane ua npuas ncauj?
Hyundai Tsav Tuam Txhab Ulsan cog tsuas yog siv BASF's Elastoflex polyurethane ua npuas ncauj ua ke los tsim cov rooj zaum hauv tsheb. Qhov no elastic polyurethane ua npuas ncauj muaj cov ntsiab lus VOC tsawg thiab feem ntau yog siv los tsim cov rooj zaum hauv tsheb thiab headrests.
Piv nrog rau cov tsoos foams, Elastoflex txhim kho kev nplij siab, elasticity thiab load-bearing zog ntawm cov rooj zaum thiab headrests, piv txwv li.
Txhawm rau kom ua tau raws li kev tswj hwm kev tswj hwm nruj tshaj plaws, BASF kuj tau txhim kho cov txheej txheem tsim khoom ntawm polyether polyols. Polyether polyols yog siv nyob rau hauv zus tau tej cov Elastoflex polyurethane ua npuas ncauj, uas yog siv nyob rau hauv zus tau tej cov rooj zaum siab. Cov txheej txheem ntau lawm ua rau BASF tsim tshwj xeeb polyether polyols nrog tus nqi qis, kev ua haujlwm siab thiab qis VOC emissions.
Hauv kev sim ua los ntawm lub ntiaj teb kev sim ua lub koom haum SGSKorea, Elastoflex txo qis acetaldehyde thiab formaldehyde emissions los ntawm ntau tshaj 30 feem pua, pab txhim kho cov huab cua hauv lub tsheb thiab kev noj qab haus huv ntawm cov neeg tsav tsheb. Kev ntsuam xyuas teb kuj tau pom tias cov khoom tsim tshiab polyurethane muaj cov khoom ntws zoo heev thiab txo cov khoom tsis xws luag, ua rau kev txhim kho cov kab ntau lawm.
Hauv kev tsim cov tsheb, cov rooj zaum hauv tsheb nyob hauv thaj chaw loj, uas ncaj qha txiav txim siab txog cov khoom siv. Tsheb maj mam cuam tshuam tib neeg txoj kev ua neej thiab ua rau tib neeg txoj kev mus los yooj yim dua. Cov rooj zaum hauv tsheb feem ntau yog cov khoom siv tawv, thiab feem ntau yog ua los ntawm daim txhuam cev thiab lwm yam ntaub ntawv, uas tsis muaj qee qhov kev nplij siab. Niaj hnub no, hloov tau yooj yim polyurethane ua npuas ncauj plastics Raws li ib qho ntawm cov khoom siv ntawm lub rooj zaum hauv tsheb, nws yog qhov zoo thiab tus nqi qis, thiab maj mam siv los ntawm cov tuam ntxhab mus rau ntau lub tsheb ntau lawm.
Polyurethane ua npuas ncauj yog ib yam ntawm cov khoom tshiab kuj muag nrog qee yam elasticity. Nws muaj ntau qhov hws, density ib leeg, zoo resilience, lub suab nqus, qhov cua, thiab cov cua sov hluav taws xob, thiab cov pa thermal zoo. Nws yog siv rau txhua yam ntawm lub neej. Ntau lub tuam txhab xaiv siv high-elasticity polyurethane ua npuas ncauj ua cov khoom siv rau lub rooj zaum hauv tsheb, thiab kev ua haujlwm ntawm cov khoom siv no maj mam txais los ntawm cov neeg.
Qhov kev nplij siab zoo li qub ntawm lub rooj zaum hauv lub tsheb yog hais txog seb qhov kev sib raug zoo ntawm lub rooj zaum hauv lub tsheb thiab tib neeg lub cev tuaj yeem muab cov neeg siv nrog kev xis nyob. Qhov kev nplij siab zoo li qub ntawm lub rooj zaum muaj feem cuam tshuam nrog qhov loj me, kev kho saum npoo thiab hloov cov yam ntxwv ntawm lub rooj zaum.
Qhov muaj pes tsawg leeg ntawm cov rooj zaum hauv tsheb feem ntau yog ua npuas ncauj nrog cov khoom siv zoo thiab qis ntom ntom, uas tuaj yeem tiv thaiv cov tshuaj hlawv. Niaj hnub no, tsoomfwv Suav muaj cov kev cai nruj dua ntawm cov khoom siv tsheb, yuav tsum muaj qhov siab tshaj plaws ntawm kev sib tsoo kom tsawg dua lossis sib npaug li 70mm / min. Cov kev cai zoo li no ua rau kom muaj kev nyab xeeb ntawm lub tsheb nws tus kheej, thiab hloov pauv polyurethane ua npuas ncauj nrog tus qauv no yog siv. Ua eeb kuj tseem maj mam tshwm sim hauv kev pom ntawm cov tuam ntxhab.
Kev hnav tsis kam ntawm polyurethane ua npuas ncauj yog siv los ua raw khoom ntawm lub rooj zaum tsheb. Lub fragility ntawm ntau cov khoom yas ua rau lawv tsis tuaj yeem siv tau ntev, tab sis hloov tau yooj yim polyurethane ua npuas ncauj muaj qhov hnav tsis kam. Nws muaj zog tensile zog thiab tsim kua muag kuj, uas ua rau nws muaj superior kev kawm. Piv nrog rau cov rooj zaum hauv tsheb, nws muaj tus nqi qis, lub sijhawm ua haujlwm ntev thiab muaj zog plasticity. Nws tuaj yeem siv rau hauv tsheb thiab maj mam nyiam tsheb ntau lawm. nyiam los ntawm manufacturers.
Nrog rau txoj kev loj hlob ntawm kev lag luam tsheb, tib neeg muaj kev xav tau ntau dua thiab siab dua rau nws qhov zoo, tshwj xeeb tshaj yog kev nyab xeeb, kev nplij siab thiab kev tiv thaiv ib puag ncig tau dhau los ua qhov kev loj hlob ntawm cov tsheb niaj hnub no. QC/T 850-2011 "Polyurethane Foams for Passenger Car Seats" tau tshaj tawm thiab siv rau xyoo 2011 yog thawj tus qauv kev lag luam hauv kuv lub teb chaws uas tshaj tawm cov kev cai emissions rau polyurethane foams rau lub rooj zaum tsheb. Standard GB/T 7630-2011 "Cov lus qhia rau kev ntsuam xyuas huab cua zoo nyob rau hauv cov neeg nrog caij tsheb". Qhov no tau ua rau cov nroj tsuag sib sau ua ke hauv tsev los muab cov kev xav tau siab dua rau cov khoom siv hluav taws xob tsis zoo (VOC), cov khoom siv kho tshuab thiab kev nplij siab ntawm lub rooj zaum hauv tsheb.
Polyurethane flexible foam yog hais txog cov khoom ntxeem tau los yog reticulated ua npuas ncauj (sponge) nrog qee yam elasticity thiab softness. Nws cov khoom zoo tshaj plaws yog softness, zoo rebound, suab nqus, qhov cua, txuag cua sov, buffering, lub zog nqus, thiab lwm yam, thiab raws li qhov sib txawv Nws kuj muaj ntau yam ntxwv ntawm daim ntawv thov thaj chaw.
Polyurethane saj zawg zog ua npuas ncauj tau dav siv nyob rau hauv txhua yam ntawm tib neeg lub neej txhua hnub thiab muaj ntau yam kev lag luam teb txij li thaum Bayer's polyester saj zawg zog ua npuas ncauj (sponge) pib tsim muaj nyob rau hauv 1952. Tom qab ntau tshaj 60 xyoo ntawm txoj kev loj hlob, domestic saj zawg zog ua npuas ncauj qhov tseeb ntau lawm yog kwv yees ntawm ntau tshaj. tshaj 3 lab tons. Cov khoom tseem ceeb yog cov ntaub ntawv tsis zoo, cov khoom siv hluav taws xob zoo, cov ntaub ntawv lim, cov khoom siv hluav taws xob, cov khoom ntim, cov ntaub ntawv zoo nkauj, cov ntaub ntawv khaub ncaws thiab lwm yam. Nyob rau hauv cov nqe lus ntawm cov khoom, hloov tau yooj yim polyurethane ua npuas ncauj feem ntau muaj xws li: thaiv npuas (ib yam li daim txhuam cev), siab-resilience molded ua npuas ncauj, nws tus kheej daim tawv nqaij ua npuas ncauj, qeeb-rebound ua npuas ncauj, thiab lwm yam.
Ntau lawm Technology ntawm Hydrophilic Polyurethane Flexible Foam
1. Cov yam ntxwv yooj yim
Nws muaj kev sib raug zoo rau dej, nqus dej sai thiab muaj dej ntau, siab softness (zoo txhais tes) thiab zoo elasticity; lub microscopic hlwb zoo thiab muaj ib tug reticular qhib-cell qauv, thiab nws zoo heev lom affinity thiab ntshav compatibility. Nws nthuav dav nws daim ntawv thov dav hauv cov tshuaj pleev ib ce thiab kho mob.
2. Kev siv tam sim no
Cov yam ntxwv ntawm hydrophilic polyurethane ua npuas ncauj kuj txiav txim siab tias nws yuav muaj daim ntawv thov zoo hauv qee qhov chaw.
(1) Kev saib xyuas mob thiab cov khoom siv lub cev xws li lub txaj rau cov neeg mob pw hauv txaj thiab cov khoom siv rau cov ntaub so ntswg
(2) Kev kho mob excipients, phais excipients (absorbing ntshav zoo ib yam li paj rwb ntaub plaub)
(3) Kev hnav khaub ncaws hnav, xws li cov khoom siv kho mob xws li Band-Aids, thiab lwm yam.
(4) Txhua hnub ntxuav thaiv, da dej thaiv, thiab lwm yam.
(5) Cov khoom siv kho kom zoo nkauj, xws li puffs, thiab lwm yam.
(6) Kev nqus cov ntaub ntawv kho mob hauv cov chaw tshwj xeeb.
3. Cov txheej txheem ntau lawm
Tam sim no, muaj ob txoj hauv kev tseem ceeb uas tau ua lag luam lossis tab tom tsim, ib qho yog ib txoj hauv kev (tib yam li cov txheej txheem tsim khoom ntawm PU ua npuas ncauj), thiab lwm yam yog ob-kauj ruam txoj kev, uas yog, txoj kev prepolymer.
Ib qho piv txwv ob-kauj ruam mus kom ze:
(1) Basic formula rau prepolymer synthesis
Polyether polyol 0-100
Me me molecule polyols 0-10
Catalyst 0 2-0.6
TDI 20-50 (tsis yog daj tuaj yeem siv HDI, IPDI, HMDI, thiab lwm yam)
NCO percent 3-14%.
Cov txheej txheem ntau lawm ntawm cov tsis-dawb daim txhuam cev hloov pauv ua npuas ncauj
Tam sim no, cov khoom siv polyurethane hloov pauv tau ua npuas dej (sponges) yog qhov ua rau yellowing. Tam sim no cov npuas dej los tiv thaiv daj feem ntau yog hais txog qhov sib ntxiv ntawm cov tshuaj tua kab mob antioxidants, cov cua sov stabilizers thiab lub teeb stabilizers thaum lub sij hawm ua npuas dej, uas tuaj yeem ua rau ib ntus txo cov yellowing ceev ntawm cov npuas dej yog ib qho yooj yim kom tig daj vim tias lub nplhaib benzene ntawm isocyanate tuaj yeem maj mam. oxidized rau hauv cov qauv quinoid thiab tig daj. Tsis tas li ntawd, cov saw hlau macromolecular muaj carbonyl, amino, azo, alkenyl, thiab lwm yam. Cov chromophore, thaum lub teeb nkag mus, yuav xaiv absorbed thiab emit lub teeb ntawm ib co wavelength, uas ua rau ib tug tej degree ntawm yellowing ntawm lub saj zawg zog ua npuas ncauj.
Cov kev daws teeb meem zoo los daws cov yellowing
Txoj hauv kev zoo tshaj plaws yog siv cov tsis daj daj aliphatic isocyanates rau foaming. Aliphatic isocyanates, xws li IPDI, HDI thiab HMDI, thiab lwm yam, cov urethane bonds tsim los ntawm cov isocyanates no kuj ruaj khov. Aliphatic amine kuj tsis muaj benzene nplhaib conjugated qauv, thiab tsis tsim ib pab pawg neeg xim, thiab aliphatic amine nws tus kheej tsis yooj yim rau oxidized, thiab nws tsis yooj yim rau yellowing; Yog li ntawd, kev xaiv ntawm aliphatic isocyanate tuaj yeem txo qhov yellowing ntawm npuas.
Technical nyuaj ntawm Aliphatic Isocyanate Foaming
Qhov tseeb, ntau tus neeg tau sim ua npuas dej hauv thaj chaw no ntau xyoo, tab sis feem ntau ntawm lawv tau ntsib qee qhov kev nyuaj ntau dua los yog tsawg dua, uas yog, aliphatic isocyanates feem ntau muaj kev ua haujlwm tsawg, thiab cov txheej txheem foaming nyuaj rau kev tswj thiab khiav lag luam. Qhov ntau los yog latitude yog nqaim heev, thiab nws yog ib qho nyuaj rau ua npuas ncauj hloov tau raws li qhov yuav tsum tau ua. Cov teeb meem uas feem ntau tshwm sim nyob rau hauv cov txheej txheem foaming yog: tawg los yog ib feem ntawm lub cev qhuav dej ua npuas ncauj, coarse foaming, deg hmoov los yog kaw lub hlwb, thiab cov blockages loj dua. npuas shrink.
Dab tsi yuav tsum tau piav qhia ntawm no yog tias daim txhuam cev ua npuas ncauj foamed nrog aliphatic isocyanate tsis tig daj tag nrho, tab sis yuav oxidize thiab tig daj heev maj mam nyob rau lub sij hawm ntev lub teeb, dej thiab cua sov. Tus nqi ntawm yellowing ntawm hom ua npuas ncauj yog tsawg heev, thiab nws zoo nkaus li cov neeg uas nws tsis tig daj.
Cov txheej txheem ua npuas dej
Cov neeg sib txawv lossis cov cheeb tsam yuav muaj cov txheej txheem foaming sib txawv, feem ntau yog vim muaj kev sib txawv, kev xaiv catalyst thiab ntau npaum li cas. Txoj kev no tsis yog ib qho thiab tsuas yog siv rau kev siv xwb.
Cov khoom siv polyether thiab lwm yam additives yog pre-mixed nyob rau hauv chav tsev kub, thiab ces poured rau hauv IPDI thiab stirred rau 6-15 vib nas this, thiab ces ncuav rau hauv lub pre-rhuab foaming thawv. - Tom qab 30 feeb, thawb lub thaiv tawm thiab ua rau hauv chav sov li 24 teev ua ntej txiav. Cov hlwb zoo li qub thiab zoo, muaj lub zog siab, zoo elasticity, tsis muaj pulverization, thiab feem ntau tsis shrinkage. Thaum me me ntawm shrinkage tshwm sim, koj yuav tsum nias maj mam. Kev ceev faj tshwj xeeb yog yuav tsum tsis txhob siv grafted polyether polyols.
Kev tsim cov txheej txheem ntawm microcellular saj zawg zog ua npuas ncauj khoom
1. Daim ntawv thov ntawm microporous mos ua npuas ncauj
Nws yuav tsum tau muab sau tseg ntawm no hais tias microcellular ua npuas ncauj tsis yog hais txog microcellular PU elastomers (xws li soles, insoles, high-speed rail gaskets, log tsheb, tsheb springs, thiab lwm yam), tab sis ib tug mos high-density polyurethane ua npuas ncauj ntawv. Nws belongs rau tshwj xeeb polyurethane mos ua npuas ncauj. Cov ntaub ntawv polyurethane hloov tau yooj yim no tau siv dav hauv kev sib txuas lus, khoos phis tawj, khoom siv hauv tsev, cov khoom siv digital, lwm yam khoom siv hluav taws xob, cov ntaub ntawv khau, khoom siv kho mob, khoom kho mob, thiab lwm yam raws li kev sib khi, kev poob siab, thiab cov ntaub ntawv cushioning.
2. Kev ua tau zoo
High sealing, siab zog nqus (siab cushioning), siab dimension stability. Zoo heev compression deformation kuj, dej tsis kam, kub tsis kam, laus kuj, ib puag ncig tiv thaiv thiab tsis muaj kuab paug, thiab lwm yam.
3. Cov txheej txheem molding yooj yim
Cov txheej txheem foaming no txawv ntawm cov dej-raws li tshuaj foaming los yog lub cev zoo tib yam foaming tus neeg sawv cev (xws li dichloromethane, thiab lwm yam) foaming txheej txheem, tab sis siv cov roj txhaj tshuaj mus tas li, thiab cov txheej txheem tsim tawm tau txais ntau cov khoom qis. txheej txheem foaming. Nws yog mechanically poured rau ntawm daim ntawv tso tawm ntawm txoj siv conveyor thiab tsis tu ncua scraped mus rau ib tug uniform thickness thiab ces kho los ntawm qhov kub thiab txias gel nyob rau hauv ib tug qhuav qhov. Cov khoom yog dov rau hauv ib lub yob thiab tom qab kho; cov txheej txheem foaming tshwj xeeb txiav txim siab qhov ua tau zoo ntawm cov khoom siv.
Kev tsom xam:
Organometallic ntsev catalysts yog tsim los tswj cov tshuaj tiv thaiv tus nqi.
Kev tswj qhov kub thiab txias yog qhov tseem ceeb hauv kev tswj cov khoom zoo.
Raws li ib qho ntawm 6 cov khoom siv hluavtaws loj hauv ntiaj teb, kev lag luam polyurethane tau nthuav dav sai hauv xyoo tas los no. Raws li "{0}} Tuam Tshoj Polyurethane Kev Lag Luam Kev Lag Luam Kev Lag Luam Trend Forecast thiab Trend Forecast Research Report" tso tawm los ntawm Booz Cov ntaub ntawv: lub ntiaj teb cov khoom tsim tawm ntawm polyurethane tau tshaj 21 lab tons, ntawm cov khoom ua npuas ncauj thiab cov khoom tsis ua npuas ncauj txhua tus account rau ib nrab ntawm lub teb chaws, thiab nws cov peev xwm loj hlob tuaj yog npaj rau kev mloog.
Cov qauv ntawm cov nplai ntau lawm yog qhov pom tseeb Hauv kev tsim khoom, kev lag luam polyurethane, zoo li feem ntau cov kev lag luam tshuaj, muaj qhov ua kom pom tseeb ntawm kev siv zog thiab nplai. Raws li polyurethane ntau lawm technology ua ntau thiab ntau mature, cov khoom ua nrov thiab daim ntawv thov teb txuas ntxiv, manufacturers pom hais tias nyob rau hauv thiaj li yuav tswj tau ib theem ntawm profitability, lawv yuav tsum muaj tej yam kev lag luam ntawm scale. Raws li qhov tshwm sim, qhov ntsuas ntawm cov lag luam tshiab tau loj dua thiab loj dua, thiab lub peev xwm ntau lawm kuj nce nrawm.
