iindaba

Ngenxa yokwanda okuqhubekayo kwemfuno yezongezo ezisebenzayo, ezinobuhlobo nokusingqongileyo nezisebenza kakuhle kumashishini amatsha ezinto ezifana ne-polyurethane kunye ne-epoxy resin,i-dimethyl thio-toluene diamine(DMTDA, inombolo yeCAS: 106264-79-3) kancinci kancinci ibe yinxalenye ephambili yokuphucula ishishini ngenxa yeempawu zayo zemveliso ezizodwa kunye neemeko zokusetyenziswa ngokubanzi. Njengohlobo olutsha lwe-aromatic diamine curing agent kunye ne-chain extender, i-DMTDA ithatha indawo ye-antical solid curing agents zemveli. I-Dimethyl thio-toluene diamine isetyenziswe kakhulu kwiindawo ezininzi ezifana neemoto, ulwakhiwo, i-cold chain, kunye ne-anti-corrosion, ikhuthaza ishishini ukuba litshintshe liye kwi-low-carbon, ukusebenza kakuhle kunye nophuhliso oluphezulu.

Iimpawu ze-dimethyl thio-toluene diamine (DMTDA)

Iingenelo eziphambili zeI-Dimethyl thio-toluene diamine (DMTDA)isuka kwipropati yayo ebonakalayo yokuba kwimeko yolwelo kubushushu begumbi kunye nokusebenza kwayo okugqwesileyo kweekhemikhali. Xa kuthelekiswa ne-arhente yokwelapha eqinileyo yesiqhelo i-MOCA, le mveliso inokupompa ngqo kwaye isetyenziswe ngaphandle kokufudumeza. Oku akunciphisi nje kuphela ukusetyenziswa kwamandla kunye nobunzima bokusebenza kwinkqubo yemveliso, kodwa kunokulungiswa kwiimeko zokwakha eziphantsi kobushushu, kujongana ngempumelelo neendawo ezibuhlungu zoshishino ezifana nokukristala kwe-arhente yokwelapha ngexesha lemveliso yasebusika kunye nokwakhiwa okungahambi kakuhle.

Idatha ibonisa ukuba i-reactivity ye-DMTDA iphindwe kayi-3.7 kune-MOCA. Inokwenza ngokukhawuleza isakhiwo se-urea esiqinileyo esine-isocyanates, nto leyo eyonyusa amandla okutsalwa kunye namandla okukrazula kweemveliso ze-elastomer ngama-20%-30%. Kwi-minus 40 degrees Celsius, isagcina ukuthamba kwayo okugqwesileyo kwaye ukusebenza kwayo kwe-hydrolysis kuphuculwe ngama-30% xa kuthelekiswa ne-MOCA, nto leyo eyenza ukuba ifaneleke kwiimeko ezinzima ezifana nokufuma kunye namaqondo obushushu aphantsi.

Ukusetyenziswa kwe-dimethyl thio-toluene diamine (DMTDA)

Kwicandelo lee-polyurethane elastomers, i-DMTDA ibe yinto ephambili yokwenza imveliso yeemveliso eziphezulu. Isetyenziswa kakhulu kwiinkqubo ezifana ne-casting polyurethane elastomers, i-reaction injection molding (RIM), kunye ne-spraying polyurea (SPUA), kwaye ingasetyenziselwa ukuvelisa iimveliso ezifana nee-high-mobility rubber rollers, ii-industrial casters, ii-oil pipe scrapers, kunye nee-automotive shock absorption components. Ngenxa yamandla ayo abalaseleyo oomatshini kunye nokumelana neoyile, ukumelana nokuguga, i-dimethyl thio-toluene diamine (DMTDA) ihlangabezana neemfuno ezingqongqo zokwenziwa koomatshini kunye noshishino lweemoto ukuze kuhlale ixesha elide izinto. Ingakumbi kwicandelo lokuthuthwa kwe-cold chain, ii-seals kunye nee-shock absorption pads ezilungiselelwe nge-DMTDA zinokuziqhelanisa neendawo ezishushu kakhulu, zibonelela ngesiqinisekiso sokusebenza okuzinzileyo kwezithuthi ze-cold chain kunye nezixhobo zokufriji, kwaye zibe yinkxaso ebalulekileyo yokuphucula izinto ze-cold chain logistics.

Uyilo lwezakhiwo kunye nobunjineli bokulwa nokugqwala yenye imeko ebalulekileyo yesiceloI-DMTDANjenge-epoxy resin ephilisayo, i-dimethyl thio-toluene diamine ingasetyenziselwa ukulungiselela iingubo ezikhusela ukubola kunye neengubo ezingatshiyo, ezisetyenziswa kakhulu kwiindonga zangaphakathi zepayipi yesinyithi, unyango olungatshiyo lweephahla zezakhiwo kunye neendonga ezisecaleni, njl. Ingubo evusiweyo inokunamathela okuhle kakhulu, ukumelana nokubola kweekhemikhali kunye nozinzo lwesakhiwo, okunokwandisa ubomi benkonzo yeziseko zophuhliso ngempumelelo. Kwiimeko ezinomhlwa omkhulu ezifana nobunjineli bolwandle kunye nezixhobo zemigodi, iingubo ezisekwe kwi-DMTDA zinokuxhathisa ukukhukuliseka okuvela kumanzi olwandle, i-acidic kunye ne-alkaline media, zinciphise kakhulu iindleko zokugcinwa kwezixhobo, kwaye zincede ukuphucula ubuchwepheshe kwicandelo lokulwa nokubola okuphezulu.

Amathuba ophuhliso lwe-dimethyl thio-toluene diamine (CAS 106264 79 3)

Ukuthobela indalo kunye namathuba emarike kuye kwakhawulezisa ngakumbi inkqubo yokutshintsha i-dimethyl thio-toluene diamine. Njengoko iindawo ezifana ne-EU ziphumeza imiqathango ekusebenziseni ii-arhente eziqinileyo ezinobungozi ezifana ne-MOCA, i-DMTDA amine engenabungozi kwaye inobuhlobo nokusingqongileyo iye yaba yindlela ekhethwayo kushishino. Ayithobeli nje kuphela imithetho yokhuseleko lokusingqongileyo yamazwe ngamazwe kodwa ikwanciphisa ungcoliseko lothuli ngexesha lenkqubo yemveliso kwaye iphucula ukhuseleko lwemisebenzi yeworkshop. Ngokwembono yendlela yemarike, ubungakanani bemarike yehlabathi ye-DMTDA kunye neemveliso ezifanayo zifikelele kwi-2.873 yeebhiliyoni zeerandi ngo-2024. Kulindeleke ukuba ikhule ngesantya sokukhula sonyaka esidibeneyo se-17.06% ukusuka ngo-2025 ukuya ku-2030. Phakathi kwazo, intsimi ye-polyurethane elastomer yokwenziwa yeyona meko inkulu yesicelo, kwaye ukukhula kwemfuno evela kwimveliso ephezulu kuye kwaba yimpembelelo ephambili yokwandiswa kwemarike.

Iingcali zoshishino zithe ukusetyenziswa okukhulu kweI-DMTDA ethacure 300Ayikhuthazi nje kuphela ukuphindaphinda kwemveliso kushishino lweearhente zokuphilisa, kodwa ikwanceda amashishini asezantsi ukuba afezekise ukunciphisa iindleko, ukuphuculwa kokusebenza kakuhle, kunye nokuphuculwa okuphezulu. Kwixesha elizayo, ngokuphumelela okuqhubekayo kubuchwepheshe obutsha bezinto, ukusetyenziswa kwe-DMTDA amine kwi-aerospace, izixhobo zonyango, kunye nezincamathelisi eziphezulu kunye nezinye iindawo kuya kwanda ngakumbi. Kwangaxeshanye, ubunyulu obuphezulu (≥99%) kunye nomlinganiselo owenziwe ngokwezifiso iimveliso ze-DMTDA ziya kuba yindawo ephambili yokhuphiswano lwemarike kwaye zikhokelele ishishini kwicala elicokisekileyo nelisebenza kakuhle. I-Unilong Industry, ngokusebenzisa ubuchule betekhnoloji kunye nokwandiswa kwamandla, iphucula kancinci ilizwi layo kwimarike yehlabathi ye-DMTDA kwaye inika inkxaso ebalulekileyo yokuzimela kunye nokulawulwa kwekhonkco lemizi-mveliso.