Chothandizira cha DMDEE Chogwira Ntchito Kwambiri cha Foam ya Polyurethane

kufotokozera mwachidule:

Dimorpholinodiethyl Ether (DMDEE) ndi amine catalyst yogwira ntchito kwambiri yomwe imafulumizitsa machitidwe a urethane, zomwe zimapangitsa DMDEE kukhala yofunika kwambiri popanga thovu lolimba komanso losinthasintha, komanso kupanga zokutira ndi zomatira. DMDEE imasankha bwino kwambiri, imalimbikitsa njira yolumikizira popanda zotsatira zoyipa kwambiri, zomwe zimatsimikizira kuti zinthu zimakhala bwino komanso zimagwira ntchito bwino. Ndi kusungunuka bwino m'makina ambiri a polyurethane, DMDEE imawonjezera magwiridwe antchito olumikizirana ndikufupikitsa nthawi yochira, ndikuwonjezera kupanga. DMDEE imasonyezanso kusinthasintha kochepa komanso fungo lochepa, ikugwirizana ndi miyezo yokhwima yachitetezo cha mafakitale ndikupangitsa DMDEE kukhala chisankho chomwe chimakondedwa kwambiri pakugwiritsa ntchito polyurethane yogwira ntchito bwino komanso yosamalira chilengedwe m'misika yapadziko lonse lapansi.

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Kufotokozera

Gulu la Katundu	Tsatanetsatane
Kudziwika Koyambira kwa Mankhwala	Dzina la Mankhwala: Dimorpholinodiethyl Ether (DMDEE)Nambala ya CAS: 6425-39-4 Fomula ya Molekyulu: C₁₀H₂₀N₂O₃ Kulemera kwa Maselo: 216.28 g/mol
Maonekedwe ndi Fungo	Madzi owonekera bwino opanda utoto mpaka achikasu; Fungo lofooka, lofanana ndi la amine
Katundu Wofunika Kwambiri	Malo Owira: 225–230 °CMalo Osungunula: -20 °C Kuchuluka: 0.98 g/cm³ (pa 20 °C) Malo Oziziritsira: 101 °C (chikho chotsekedwa) Kukhuthala: 15–20 mPa·s (pa 25 °C) Kuthamanga kwa nthunzi: < 0.1 mmHg (pa 20 °C)
Mbiri Yosungunula	Zingasakanizidwe ndi zinthu zosungunuka zachilengedwe (mowa, ma ester, ma ether, ma hydrocarbon);Sungunuka pang'ono m'madzi (~1% kusungunuka pa 25 °C)
Makhalidwe Achilengedwe	Chothandizira chochokera ku amine chapamwamba;Kuchitapo kanthu kwakukulu pa zochita za isocyanate-hydroxyl; Yokhazikika pansi pa malo osungiramo zinthu mwachizolowezi (pewani ma asidi/mabowo amphamvu); Yosawononga zitsulo wamba zamafakitale (chitsulo, aluminiyamu)
Chitetezo & Kuopsa	LD₅₀ yomwa pakamwa mwachangu (makoswe): ~2000 mg/kgKhungu lofewa ndi maso zimakwiyitsa zikakhudzana mwachindunji Madzi osayaka (malo owunikira > 100 °C) Palibe mphamvu zodziwika zoyambitsa matenda a mutagenic kapena carcinogen
Mapulogalamu Oyambirira	Chothandizira cha urethane cha thovu lolimba/losinthasintha la polyurethane;Kukonza zinthu zothandizira kupukutira zinthu za PU, zomatira, ndi zomatira; Kuthandizira pakupanga nsalu ndi mipando

Dimorpholinodiethyl Ether (DMDEE, CAS 6425-39-4)ndi chothandizira chapamwamba cha amine chapamwamba, chodziwika ndi kusankha kwake kwapadera, kusasinthasintha kochepa, komanso kugwirizana kwakukulu ndi machitidwe a polyurethane (PU) - zomwe zimaiyika ngati chowonjezera chachikulu pakupanga mafakitale olondola. Mosiyana ndi zothandizitsa za amine wamba, DMDEE imapereka kufulumizitsa kwa urethane cross-linking reactions, kuchepetsa zotsatira zoyipa ndikuwonetsetsa kuti kuchira kumagwirizana popanda kusokoneza kapangidwe ka mankhwala, kutsatira kwathunthu miyezo yapadziko lonse lapansi komanso miyezo yachilengedwe.

Ntchito za DMDEE zimakhudza mafakitale osiyanasiyana amtengo wapatali: ndi chinthu chothandiza kwambiri popanga thovu lolimba komanso losinthasintha la PU lomwe limagwiritsidwa ntchito popanga zinthu zoteteza ku zinthu zomangira komanso mipando yamagalimoto, komwe limawonjezera kusinthasintha kwa thovu komanso mphamvu ya makina; limagwira ntchito ngati chothandizira kwambiri pakuchiritsa zinthu zomatira za PU, zomatira, ndi zomatira, kufupikitsa nthawi yopangira zinthu pamene likuwonjezera kulimba kwa ma bond ndi kukana mankhwala; kuphatikiza apo, DMDEE imagwira ntchito ngati chithandizo chofunikira kwambiri pakupanga ma elastomer apadera a PU popanga nsalu ndi nsapato.

Ma DMDEE athu azinthu akuphatikizapo magiredi osinthidwa (mafakitale, apamwamba kwambiri, ndi otsika fungo) kuti agwirizane ndi zofunikira zosiyanasiyana zogwiritsira ntchito, ndi njira zowongolera bwino zomwe zimatsimikizira kuchuluka kwa kusayera pansi pa 0.05% ndi magawo okhazikika a mankhwala kuti pakhale zotsatira zokhazikika. Timapereka mayankho osinthika, kuyambira ma phukusi ang'onoang'ono a zitsanzo mpaka kutumiza kwa IBC tote ndi zotengera za thanki, pamodzi ndi zikalata zonse zotsatizana (kuphatikiza MSDS yamitundu yosiyanasiyana, ziphaso zotumizira za UN, ndi zikalata zolembetsa za REACH). Gulu lathu lodzipereka laukadaulo limapereka chithandizo cha munthu payekhapayekha—monga kukonza kapangidwe ka PU, kuyesa kuchuluka kwa catalyst, ndi chitsogozo chotetezeka chosungira—kuti chikuthandizeni kukonza njira zopangira ndikukweza mpikisano wazinthu.