Farqiga u dhexeeya polyurethane MDI iyo nidaamyada TDI ee mashiinnada elastomerka

Hordhac:

Mashiinnada elastomer polyurethane ayaa door muhiim ah ka ciyaara warshadaha casriga ah.Si kastaba ha noqotee, marka ay timaado doorashada nidaamka polyurethane, waxaa jira laba ikhtiyaar oo waaweyn: nidaamka MDI (diphenylmethane diisocyanate) iyo nidaamka TDI (terephthalate).Maqaalkani wuxuu sahamin doonaa farqiga u dhexeeya labadan nidaam si uu uga caawiyo akhristaha inuu sameeyo doorasho xog-ogaalnimo leh oo codsi gaar ah.

I. Mashiinnada Elastomer ee Nidaamyada Polyurethane MDI

Qeexida iyo Halabuurka: Nidaamka MDI waa elastomer polyurethane ah oo laga soo saaray diphenylmethane diisocyanate oo ah alaabta ceeriin ee ugu weyn, sida caadiga ah ka kooban walxaha caawiya sida polyether polyol iyo polyester polyol.

Tilmaamaha iyo Faa'iidooyinka:

Xoog sare iyo caabbinta naaxinta: Elastomers nidaamka MDI waxay leeyihiin sifooyin jireed oo heer sare ah waxayna ilaaliyaan xasilloonida jawiga walaaca sare.

Iska caabin gabow heer sare ah: elastomers leh nidaamyada MDI waxay leeyihiin iska caabin wanaagsan oksaydhka iyo shucaaca UV iyo nolol adeeg oo dheer.

Iska caabbinta wanaagsan ee saliidaha iyo dareerayaasha: Elastomers MDI waxay ahaanayaan kuwo deggan marka ay la kulmaan kiimikooyinka sida saliidaha iyo dareerayaasha.

Aagagga codsiga: Elastomers ee nidaamka MDI ayaa si weyn loogu isticmaalaa wax soo saarka baabuurta, qalabka isboortiga iyo alaabta warshadaha.

II.Mashiinnada elastomer ee nidaamka Polyurethane TDI

Qeexid iyo halabuurka: Nidaamka TDI waa elastomer polyurethane ah oo lagu soo saaray terephthalate oo ah alaabta ceeriin ee ugu weyn, inta badan ka kooban walxaha caawiya sida polyether polyol iyo polyester polyol.

Tilmaamaha iyo Faa'iidooyinka:

Balaasti wanaagsan iyo jilicsanaan: Elastomers nidaamka TDI waxay leeyihiin barti iyo jilicsanaan sare waxayna ku habboon yihiin alaabada u baahan dareemo gacan sare.

Waxqabadka qaloocin heerkul hoose oo heer sare ah: nidaamka TDI elastomers ayaa wali leh waxqabad foorarsi heer sare ah ee jawiga heerkulka hooseeya, mana fududa in la habeeyo ama la jebiyo.

Ku haboon qaababka adag: TDI elastomers waxay ku fiican yihiin soo saarista qaabab adag si ay u daboolaan baahiyaha naqshadeynta ee kala duwan.

Codsiyada: Elastomers TDI ayaa si weyn loogu isticmaalaa alaabta guriga iyo joodariyaasha, soo saarista kabaha iyo alaabta baakadaha.

III.Isbarbardhigga nidaamyada MDI iyo TDI

Marka la eego mashiinnada elastomer polyurethane, nidaamyada MDI iyo TDI waxay leeyihiin sifooyin iyo faa'iidooyin kala duwan.Jaantusyada soo socdaa waxay sii barbar dhigi doonaan kala duwanaanshahooda xagga qaab dhismeedka kiimikada, sifooyinka jidhka, ilaalinta deegaanka iyo badbaadada, kharashyada wax soo saarka iyo meelaha codsiga:

Sida laga arki karo miiska kor ku xusan, elastomers ee nidaamka polyurethane MDI waxay leeyihiin awood sare, caabbinta gabowga iyo caabbinta saliidda, waxayna ku habboon yihiin isticmaalka baabuurta, qalabka isboortiga iyo alaabta warshadaha.Dhanka kale, elastomers nidaamka TDI ee polyurethane waxay leeyihiin dabacsanaan wanaagsan, dabacsanaan iyo heerkul hooseeya, waxayna ku habboon yihiin in loo isticmaalo meelaha sida alaabta guriga iyo furaashyada, soosaarka kabaha iyo alaabta baakadaha.

Waxa kale oo xusid mudan in nidaamka MDI uu aad qaali u yahay in la soo saaro, laakiin uu bixiyo ilaalin iyo badbaado deegaan oo wanaagsan.Taas bedelkeeda, nidaamka TDI wuxuu leeyahay qiimo wax soo saar hoose laakiin ka kooban isocyyanate sare oo wax yar bay'ada saaxiibtinimo ka yar tahay nidaamka MDI.Sidaa darteed, marka la dooranayo nidaamka polyurethane, soosaarayaashu waa inay tixgeliyaan waxqabadka alaabta, shuruudaha deegaanka iyo caqabadaha miisaaniyada si loo horumariyo barnaamijka wax soo saarka ee ugu habboon si loo daboolo baahiyaha codsiyada kala duwan.

IV.Xulashada Codsiga iyo Talooyinka

Doorashada nidaamka saxda ah ee codsiyada kala duwan: Iyadoo la tixgelinayo shuruudaha alaabta iyo sifooyinka aagga codsiga, xulashada elastomers leh nidaamyada MDI ama TDI waxay hubisaa waxqabadka ugu fiican iyo waxtarka kharashka.

Go'aan ka gaarista waxqabadka badeecada iyo miisaaniyada: marka la dooranayo nidaamka, waxqabadka badeecada, shuruudaha deegaanka iyo caqabadaha miisaaniyada ayaa la tixgaliyaa si loo horumariyo xalka wax soo saarka ee ugu habboon.

Gabagabo:

Polyurethane MDI iyo kombuyuutarrada nidaamka TDI mid kastaa wuxuu leeyahay faa'iidooyin u gaar ah waxayna ku habboon yihiin baahiyaha badeecadaha ee meelo kala duwan.Fahamka kala duwanaanshiyaha ayaa ka caawin doona soosaarayaasha inay sameeyaan doorashooyin xog ogaal ah si loo hubiyo in alaabtoodu ay si fiican ugu shaqeeyaan codsiyada gaarka ah.