Ii-polyurethane elastomers zizinto ezinokusetyenziswa ngeendlela ezahlukeneyo ezibonisa iimpawu ezintle zoomatshini ezifana nokuqina okuphezulu, ukumelana nokuguguleka kunye nokuqina. Ezi mpawu zizenza zifaneleke kwiintlobo ngeentlobo zezicelo zoshishino, kubandakanya izixhobo zeemoto, izihlangu, izitywini kunye neengubo. Ukuveliswa kwee-polyurethane elastomers kufuna ulawulo oluchanekileyo lweempendulo zeekhemikhali ezibandakanyekayo, ingakumbi xa kusenziwa i-urethane bond phakathi kwe-polyol kunye ne-isocyanate. Ii-polyurethane catalysts zidlala indima ebalulekileyo apha.
Iikhatalyst zePolyurethaneziyakwazi ukulawula isantya kunye nokusebenza kakuhle kwempendulo ye-polyurethane. Zichaphazela ibhalansi phakathi kwe-gelation (polyol-isocyanate) kunye ne-foaming (water-isocyanate), emisela ngokuthe ngqo iipropati zokugqibela ze-elastomer. Ngokukhetha i-catalyst efanelekileyo, abavelisi banokwenza ngcono iimeko zokucubungula kwaye balungelelanise iipropati zomzimba ze-elastomer ukuze zihlangabezane neemfuno ezithile zokusetyenziswa.
Esinye isihluthulelo esibalulekileyo esisetyenziswa ekuvelisweni kwee-elastomers ze-polyurethane yi-MXC-37, ekwaziwa ngokuba yi-dimethylethanolamine ether (DMAEE).I-MXC-37 yi-catalyst ye-amine ekhupha umbane kancinci, enevumba eliphantsi esetyenziswa kakhulu kwiindawo ezifuna ukukhutshwa kwe-amine okuncinci kunye nokusebenza okuphezulu. Iipropati ezikhethekileyo ze-MXC-37 zenza ukuba ifaneleke ngakumbi kwi-foam ethambileyo esekwe kwi-ester, i-microcellular foam, i-elastomers, i-reaction injection molding (RIM) kunye nezicelo zokupakisha i-foam eqinileyo.
I-MXC-37kwi-Polyurethane Elastomers
I-MXC-37Inika iingenelo ezininzi ekuvelisweni kwee-elastomers ze-polyurethane. Sisithako esisebenzayo kakhulu esiphucula inkqubo yokufutha kwaye sifanelekile kwiifomyula ezinomthamo wamanzi amaninzi. Umsebenzi wayo wokufutha ophezulu ukhuthaza ukwakheka kwamaqamza ngokufanelekileyo kunye nolwakhiwo olufanayo lweeseli, nto leyo ibalulekileyo kwizicelo ezifana neefoams ze-microcellular kunye nee-elastomers.
Kwizicelo ze-elastomer, i-MXC-37 iqinisekisa ukuphiliswa ngokukhawuleza nangokufanayo, nto leyo ephucula iipropati zoomatshini ze-elastomer, njengokuqina okunamandla okutsalwa kunye nokuguquguquka. Oku kwenza ukuba ibe lukhetho oludumileyo kwimveliso yezinto ze-elastomer ezihlala ixesha elide ezifuna ukuthamba okuphezulu, ezifana nezitywini, ii-gaskets kunye nezixhobo zemoto.
Ukongeza, ivumba eliphantsi kunye neempawu zokukhupha umbane ze-MXC-37 nazo ziluncedo olukhulu, ngakumbi xa kusetyenziswa ivumba elibi. Ivumba le-amine elidla ngokunxulunyaniswa nee-catalysts ze-polyurethane liyancitshiswa xa kusetyenziswa i-MXC-37, nto leyo eyenza ifaneleke kwiimveliso ezidibana ngqo nabathengi, ezifana nezihlangu kunye nezinto zokuthambisa.
Izicelo Ezininzi
Ukuguquguquka kwe-MXC-37 akupheleli nje kwi-elastomers, kodwa kukwafikelela nakwezinye iinkqubo ze-polyurethane foam. Kwizicelo ze-microcellular foam, inceda ukuvelisa amagwebu aneembobo ezincinci nezifanayo, nto leyo ephucula ukufunxwa kwe-shock kunye neempawu ze-cushion zezinto. Kwi-reaction injection molding (RIM), i-MXC-37 inceda ekubumbeni ngokukhawuleza iindawo ezintsonkothileyo, inyuse imveliso, kwaye ivelise iindawo ezikhaphukhaphu, ezisebenzayo kakhulu kwiimoto nakwimizi-mveliso.
Ukongeza, i-MXC-37 ingasetyenziswa kwiiphakheji ze-foam eziqinileyo, apho umsebenzi wayo wokwenza i-foam ibe phezulu uqinisekisa ubushushu obufanelekileyo kunye nokhuseleko. Iipropati ze-catalyst azinavumba liphantsi kwaye azikhuphi mveliso nazo ziyanceda kwezi zicelo, zinciphisa impembelelo yokusingqongileyo kwaye ziphucule iimeko zomsebenzi.
Isiphelo
Ukuqukumbela, ii-catalysts ze-polyurethane ezifanaI-MXC-37 (i-DMAEE)zizinto ezibalulekileyo ekuvelisweni kwee-polyurethane elastomers kunye nezinye iinkqubo ze-foam. Ukukwazi kwazo ukulawula amazinga okusabela, ukuphucula umgangatho we-foam, kunye nokunciphisa ukukhutshwa kwevumba kuzenza zibe yimfuneko kwiintlobo ngeentlobo zezicelo zoshishino. I-MXC-37, ngomsebenzi wayo ophezulu wokukhupha igwebu kunye neempawu zokukhupha umbane omncinci, inika abavelisi isisombululo esithembekileyo sokwenza iimveliso ze-polyurethane ezisebenza kakuhle, ukusuka kwii-elastomers ukuya kwii-microcellular foams kunye nokupakisha igwebu eliqinileyo.
Ixesha leposi: Disemba-24-2024