I-Dibyltin iHilaurate: Indawo yokuguquguqukayo ngezicelo ezahlukeneyo
I-Dibreltorin iHilaurate, ekwabizwa ngokuba yi-DBTDL, yindawo esetyenziswa ngokubanzi kwishishini lekhemikhali. Yenzelwe usapho lwe-organotin kwaye lixabisekile ngenxa yeepropathi zayo kuluhlu lokuphendula kwamachiza. Eli candelo liguquguqukayo lifumene izicelo kwiPolymerization, ehlobeneyo, kunye neenkqubo zeTranses, ezenza ukuba zibe yinxalenye ebalulekileyo ekuvelisweni kweemveliso ezahlukeneyo zemizi-mveliso.
Enye yezona zinto zisetyenziswa yi-dibltorin chictlin i-chillaite injengempumelelo ekuvelisweni kweetafile, iingubo, kunye nokubulala. Kumzi-mveliso wasePolyuredthane, i-DBTDL iqhubela phambili ukumiselwa konxibelelwano lwe-urethane, ebaluleke kakhulu kuphuhliso lwezinto ezikumgangatho ophezulu. Umsebenzi wayo obaluleke kakhulu wenza i-synthesi efanelekileyo yeemveliso zePolyurethane ezineepropathi ezinqwenelekayo ezinje ngokuguquguquka, ukuqina, kunye nokuzinza komzimba.
Ngapha koko,I-Dibyltin iyanditshisauqeshiwe njengeyona nto iphambili kwi-synthesins ye-Polyester PUNAST. Ngokukhuthaza ukuncamasa kunye nendlela yokuphendula yetrapsed, i-DBTDL iqhubela phambili ukuveliswa kwezinto ezisetyenziswayo ezisetyenziswayo kwimveliso yezixhobo, ukupakisha, kunye nezicelo ezahlukeneyo zeshishini. Indima yayo ebaluleke kwezi nkqubo inegalelo kuphuculo lomgangatho wemveliso kunye nokusebenza kwempumelelo kwemveliso.
Ukongeza kwindima yayo kwi-polymerization kunye nokuhloniswa, i-dibytorin yokuphakama isetyenziswa kwimveliso ye-silicone elastone kunye neetywina. Umsebenzi we-DBTDL we-DBTDL uluncedo ekucekezelweni kwe-silicone polymers, ekhokelela ekulandeni izinto ze-Elastomeric, ezikhokelela ekusetyenzisweni kwe-Elastomeric Izixhobo ezikhethekileyo kunye nokuxhathisa ubushushu kunye neekhemikhali. Ngaphezu koko, i-dilisite isebenza njengeyona nto iphambili ekuphinisweni kwesilika, ingenza ukuba iimveliso zesemo zemozulu zisetyenziswa kakhulu kwizicelo zokwakha nezithuthi.
Ukuchuma kwe-dibytorn dilarete idlulela kwisicelo sayo njengeyona nto iphambili kwi-synthes ephakathi ye-sumapring kunye neekhemikhali ezintle. Iipropathi zayo zenkathalo zidlala indima ebalulekileyo ekuququzeleleni iinguqu ezahlukeneyo zezinto ezisebenza, kubandakanya i-Acction, i-alkyporess, kunye neendlela ezibalulekileyo kwimveliso yeekhemithi zamayeza kunye neekhemikhali ezikhethekileyo. Ukusetyenziswa kwe-DBTDL njengeyona ndlela ibaluleke kakhulu kwezi nkqubo inegalelo kwimveliso esebenzayo yeemveliso zekhemikhali eziphezulu ezinezicelo ezahlukeneyo.
Ngaphandle kokusetyenziswa kwayo njengeyona nto ibaluleke kakhulu,I-Dibyltin iyanditshisaiphakamise iinkxalabo malunga neempembelelo zayo ezinokubakho kokusingqongileyo kunye nezempilo. Njengomxholo we-organotin, i-DBTDL ibe ngumxholo wokukrokrelwa komgaqo ngenxa yetyhefu yayo kunye nokuzingisa kwindalo esingqongileyo. Kwenziwe iinzame zokunciphisa ifuthe lokusingqongileyo le-Dibyltorin ngokuphumelela kuphuhliso lwe-catalysts ezingezizo kunye nokuphunyezwa kwemiGaqo-nkqubo elawula ukusetyenziswa nokuchithwa kwayo.
Ukuqukumbela, i-dibytorin ye-dilisirate yintlekele ebalulekileyo ngezicelo ezahlukileyo kwishishini lekhemikhali. Indima yayo kwi-Polymerization, ehlobeneyo, i-silicone synthesis, kunye nenguqu ye-organic igxininisa ukubaluleka kwayo ekuvelisweni kweemveliso ezibanzi zemveliso nezamashishini. Ngelixa iipropathi zayo zekataly zinezixhobo zokuqhuba iinkqubo ezahlukeneyo zekhemikhali, ukusetyenziswa kunye nokulawulwa kwe-dibytorin rilaite kubalulekile ukunciphisa umngcipheko wokusingqongileyo kunye nezempilo ezinxulumene nokusetyenziswa kwendalo esingqongileyo. Njengoko uphando kunye nemveliso entsha iyaqhubeka ukuqhubela phambili, ukuphuculwa kweekati ezizinzileyo nezikhuselekileyo kuya kuba negalelo kwindaleko yemveliso yekhemikhali ukuya kwimozulu enobuhlobo kwindalo.
Iposi: Apri-19 ukuya ku-2004