Isingeniso Esifushane ku-DOP kanye ne-DOTP

Ama-DOP vs DOTP Plasticizers: Uyini Umehluko Omkhulu?

I-DOP ne-DOTP ziyizinto zokwenziwa kwepulasitiki ezisetshenziswa kabanzi ezisetshenziselwa ukwenza i-PVC ithambe, iguquguquke futhi kube lula ukuyicubungula. Umehluko omkhulu ukwakheka kwazo kwama-molecule: I-DOP, evame ukubhekisela ku-DEHP, iyi-orthophthalate, kuyilapho i-DOTP, ebizwa nangokuthi i-DEHT, iyi-terephthalate futhi ivame ukukhethwa njengenye indlela engeyona i-orthophthalate.

I-DOP ne-DOTP ngokushesha

I-DOP ne-DOTP zinefomula efanayo yama-molecule kanye nesisindo sama-molecule esifanayo, kodwa ziyi-isomers zesimo. Ku-DOP, amaqembu amabili e-ester aseduze kwendandatho ye-aromatic. Ku-DOTP, aphambene. Lo mehluko wesakhiwo uthonya ukuguquguquka, ukufuduka, ukuziphatha kukagesi, ukwelashwa kokulawula kanye nokusebenza kwesikhathi eside ku-PVC eguquguqukayo.

Inothi lokuqamba: Ezimakethe ze-PVC zezentengiselwano, igama elithi 'DOP' livame ukusho i-DEHP ene-CAS 117-81-7. Akufanele ididaniswe ne-di-n-octyl phthalate, noma i-DNOP, okuyinto ehlukile. Abathengi kufanele baqinisekise njalo igama lamakhemikhali kanye nenombolo ye-CAS ephepheni ledatha yokuphepha.

Ama-Plasticizer asebenza kanjani ku-PVC?

I-PVC engafakwanga ipulasitiki iqinile ngokwemvelo. I-plasticizer ingena phakathi kwamaketanga e-polymer e-PVC futhi inciphise amandla abambe lawo maketanga ndawonye. Amaketanga angabe esehamba kalula, okwehlisa ubulukhuni futhi kwandise ukuguquguquka, ukunwebeka kanye nokucutshungulwa. Umphumela wokugcina uncike ku-resin ye-PVC, ukulayishwa kwe-plasticizer, iziqinisi, izigcwalisi, imibala, indlela yokucubungula kanye nezimo zesevisi.

Kuyini i-DOP Plasticizer?

I-DOP yigama lemboni lendabuko le-bis(2-ethylhexyl) phthalate, elifingqiwe ngokunembile i-DEHP. Inomlando omude njenge-PVC plasticizer yenhloso ejwayelekile ngoba inikeza ukuthambisa okusebenzayo, ukuhambisana okubanzi, ukuziphatha okusemisiwe kokucubungula kanye nezindleko zokukhiqiza ezincintisanayo.

Kuye ngemithetho yendawo kanye nencazelo yomkhiqizo oqediwe, i-DOP isetshenziswe kumafilimu e-PVC ezimboni, isikhumba sokwenziwa, izindwangu ezimboziwe, phansi, amapayipi, izivalo, ama-gasket, izingxenye zezicathulo kanye nama-cable compounds akhethiwe. Isimo sayo sokulawula kumele sihlolwe ngokucophelela ngaphambi kokuba sichazwe ngemikhiqizo ehilela ukuchayeka okukhulu kubantu.

Kuyini i-DOTP Plasticizer?

I-DOTP imele i-dioctyl terephthalate futhi yaziwa nangokuthi i-DEHT noma i-bis(2-ethylhexyl) terephthalate. Iwuketshezi olucacile, olunephunga eliphansi olusetshenziswa kakhulu kwi-PVC eguquguqukayo. Ngenxa yokuthi iyi-terephthalate kunokuba yi-orthophthalate, i-'non-orthophthalate plasticizer' iyincazelo enembile kakhulu kwezobuchwepheshe.

I-DOTP ivame ukuhlolwa njengendlela ehlukile esikhundleni se-DOP lapho umenzi edinga ukuhambisana okuhle kwe-PVC kanye nokuguquguquka okuphansi, ukuhlala isikhathi eside okuthuthukisiwe, ukumelana nokufuduka noma ukukhishwa, izakhiwo zikagesi eziwusizo kanye nephrofayili ehlukile yokulawula.

Ukuqhathaniswa Kokusebenza kwe-DOP vs DOTP

Lokhu kuyiziqhathaniso ezijwayelekile embonini, akuzona izindinganiso eziqinisekisiwe. Amazinga ezentengiselwano ayahlukahluka ngobumsulwa kanye nomkhiqizi, kuyilapho ukusebenza kwenhlanganisela eqediwe kushintsha ngohlobo lwe-resin, ukulayishwa kwe-plasticizer, ama-filler, ama-stabilizer kanye nezimo zokuhlola. Sebenzisa idatha yobuchwepheshe yomhlinzeki kanye nezilingo zohlelo lokusebenza ukuze uthole isinqumo sokugcina.

1. Isakhiwo sama-molecule

I-DOP iyi-ortho isomer: amaqembu ayo e-ester ahlala eduze komunye nomunye eringini ye-aromatic. I-DOTP iyi-para isomer: amaqembu abekwe maqondana. Yingakho amakhemikhali amabili anefomula efanayo angaziphatha ngendlela ehlukile ekwakhiweni kwe-PVC futhi aphathwe ngendlela ehlukile ngemithetho.

2. Ukusebenza Kahle Nokucubungula Ngepulasitiki

I-DOP yaziwa ngokuthambisa okuphumelelayo kanye nokucubungula okubikezelwayo. I-DOTP ingafinyelela ubulukhuni obufanayo kanye nokusebenza komshini ezinhlotsheni eziningi, kodwa akufanele iphathwe njengokushintsha okuzenzakalelayo komuntu ngamunye. Ukuziphatha kokuhlanganiswa, i-viscosity kanye nokusebenzisana nama-filler noma ama-plasticizer esibili kungashintsha.

3. Ukuguquguquka kanye Nokuhlala Isikhathi Eside

Ukulahleka kwe-plasticizer kungandisa iphunga noma inkungu futhi kungenza i-PVC eguquguqukayo ibe nzima noma iqhekeke kakhulu ngokuhamba kwesikhathi. I-DOTP ivame ukukhethwa lapho ukuguquguquka okuphansi kanye nokugcinwa kwe-plasticizer okuthuthukisiwe isikhathi eside kubalulekile. Qinisekisa isimangalo ngokuhlolwa kokuguga kokushisa kanye nokunciphisa isisindo okuhambisana nokushisa kwesevisi okuhlosiwe.

4. Ukumelana Nokufuduka Nokukhipha

Ukufuduka kungabangela ukunamathela kobuso, ukudaya, izinkinga zokudlulisa ukuphrinta noma ukulahlekelwa ukuguquguquka. Ukukhipha kungase kwenzeke lapho i-PVC ithinta amanzi, insipho, uwoyela, amafutha noma izinyibilikisi. I-DOTP ivame ukucatshangelwa lapho kudingeka ukumelana okungcono, kodwa izinga lokushisa, isikhathi sokuxhumana, ukuhlushwa kwe-plasticizer kanye nezinto eziseduze konke kuthinta umphumela.

5. Ukusebenza Kokushisa Nokubanda

Zombili izinto zokupholisa zingasekela ukusebenza kwezinga lokushisa okuwusizo ku-PVC eguquguqukayo. I-DOTP ivame ukuhlolwa lapho ukuguga kokushisa, ukwehlisa isisindo okuphansi kanye nokuguquguquka kwesikhathi eside kuyizinto eziza kuqala. Emakhazeni amakhulu, izinto zokupholisa zingahlanganisa i-plasticizer eyinhloko ne-adipate noma i-sebacate. Ukuze kusetshenziswe ikhebula elishisa kakhulu, i-trimellitate eguquguqukayo ephansi ingafaneleka kakhulu.

6. Ukufakwa Kokushisa Kukagesi

I-DOTP ihlolwa kabanzi ngama-PVC wire kanye nama-cable compounds aguquguqukayo ngenxa yokuhlanganiswa kwayo kokushisa kagesi, ukuguquguquka kanye nokuhlala unomphela. I-compound eqediwe kumele isadlule ezidingweni ezifanele zokumelana nomthamo, amandla e-dielectric, ukuguga kokushisa, ukugcinwa kokuthamba, ukugcinwa kokunwebeka kanye nokusebenza komlilo.

7. Izindleko kanye Nenani Eliphelele

Amanani e-plasticizer ahamba ngokwe-feedstock, isifunda, ivolumu ye-oda kanye ne-logistics, ngakho-ke i-premium yentengo ye-DOP-to-DOTP engaguquki ayithembekile. Qhathanisa izindleko zokukhiqiza eziphelele, isivuno sokucubungula, ingozi yokwehluleka, isikhathi sokuphila komkhiqizo, izidingo zokuhlola kanye nokufinyelela emakethe kunentengo ngethani elilodwa kuphela.

Izinhlelo zokusebenza ze-DOP vs DOTP

Ifilimu neshidi le-PVC eliguquguqukayo

Ama-plasticizer alawula ukuthamba, ukunwebeka, ukukhuthazela kokugoba kanye nokuziphatha kokushisa okuphansi kwifilimu ye-PVC eguquguqukayo. I-DOP ingasetshenziswa ezinhlotsheni ezivunyelwe zezimboni, kuyilapho i-DOTP ihlolwa kakhulu kumafilimu adinga ukuhlala isikhathi eside noma ukubekwa kwe-non-orthophthalate okuthuthukisiwe. Izimpahla ze-HSQY Ifilimu ethambile ye-PVC yokuphrinta, phansi, ikhethini, ukusetshenziswa kokuvikela kanye nezimboni.

Izakhi Zezintambo Nezintambo

Abakhiqizi bekhebula baqhathanisa ukumelana nomthamo, ukuguga kokushisa, ukuguquguquka kwezinga lokushisa eliphansi, ukuguquguquka, ukuhambisana okuvimbela ilangabi kanye nokucutshungulwa. I-DOTP iyindlela evamile yamakhemikhali ekhebula aguquguqukayo ajwayelekile, kuyilapho ama-plasticizer akhethekile angadingeka ukuze kulinganiswe amazinga okushisa aphezulu noma ezindaweni ezinzima kakhulu.

Isikhumba Sokwenziwa Nezindwangu Ezimboziwe

Ukukhethwa kwe-plasticizer kuthinta ukujiya kwesembozo, ukuhlangana, ukuzwakala kobuso, ukugqokwa, ukumelana nokubanda, ukufiphala kanye nokuguga. I-DOTP ingahlolwa lapho umenzi edinga ukufuduka okuphansi, ukugcinwa kokuthamba isikhathi eside noma okuqukethwe kwe-orthophthalate okuncishisiwe.

Izimbozo Zaphansi Nezindonga

Uphahla lwe-PVC ludinga ibhalansi yokuhlanganiswa, ukuguquguquka, ukuzinza kobukhulu, ukusebenza kahle kokuguguleka, imigomo yokukhishwa komoya endlini kanye nezindleko. I-DOTP icatshangwa kabanzi ezinhlotsheni zesimanje zophahla, ikakhulukazi lapho kusebenza khona izincazelo ezingezona i-orthophthalate noma izidingo zokuthenga ukukhishwa komoya okuphansi.

Amapayipi, Izivalo, Ama-Gasket kanye nama-Plastisols

Kumapayipi, izivalo, ama-gasket, ama-dip coating, ama-sealant nama-plastisol, ukukhetha kuncike ekuqineni, ekuhlanganiseni, ekucindezelweni, ekufudukeni nasekumelaneni noketshezi oluhlosiwe noma endaweni yokuxhumana. Ukuhlolwa kokukhipha okuthile kohlelo lokusebenza kuthembekile kakhulu kunesimangalo esijwayelekile sokuthi i-plasticizer eyodwa ihlala ingcono.

Ishidi le-PVC eliqinile

I-PVC eqinile ngokuvamile ayinayo i-plasticizer eyinhloko noma ayinayo nhlobo ngoba ukuqina nokuqina kobukhulu kuyadingeka. Ishidi le-PVC eliqinile kufanele liqinisekise ukuthi umkhiqizo awuzange ufakwe ipulasitiki, uguqulwe kancane noma wenzelwe ukusetshenziswa okuguquguqukayo ekugcineni.

Indlela Yokukhetha Phakathi Kwe-DOP Ne-DOTP

Ukukhetha okulungile kuncike ekuchazeni umkhiqizo, hhayi igama le-plasticizer kuphela. Sebenzisa umhlahlandlela wesinqumo olandelayo njengesiqalo.

Ngaphambi kokukhetha, chaza okuqondiwe Ukuqina kwe-Shore, izinga le-resin, ukulayisha kwe-plasticizer, indlela yokucubungula, ububanzi besevisi-yokushisa, umkhawulo wokuguga kokushisa, umkhawulo wokufuduka noma wokukhipha, isidingo sikagesi, okuqondiwe kwephunga, isikhathi sokuphila esilindelekile, imakethe yendawo kanye nezindleko zokwakheka eziphelele.

Indlela Yokufaka I-DOTP Esikhundleni Se-DOP Ekwakhekeni Kwe-PVC

I-DOTP ingathatha indawo ye-DOP emikhiqizweni eminingi ye-PVC eguquguqukayo, kodwa ukushintshaniswa kwesilinganiso sokukhiqiza kufanele kulandele isivivinyo esilawulwayo kunokushintshaniswa okucatshangwayo komuntu ngamunye.

1. Chaza isisekelo: bhala phansi umthamo wamanje we-DOP, ubulukhuni be-Shore, amandla okuthamba, ukunwebeka, ukuziphatha kokuhlangana, i-viscosity kanye nefasitela lokucubungula.

2. Yenza isivivinyo selabhorethri: qala eduze kwezinga lamanje le-phr, bese ulungisa ukulayisha kwe-DOTP ukuze ufinyelele ubulukhuni obuqondiwe kanye nezakhiwo zomshini.

3. Hlola ukucutshungulwa: kala ukuziphatha kokuxubana okomile, isikhathi sokuhlanganiswa, i-torque, ingcindezi yokukhipha, impendulo yekhalenda noma i-plastisol viscosity njengoba kufanele.

4. Hlola ukusebenza kokusetshenziswa kokugcina: qhathanisa ukuguga kokushisa, ukwehla kwesisindo, ukuguquguquka kokubanda, ukufuduka, ukukhipha, ukufiphala, ukumelana nogesi kanye nephunga ngokumelene nencazelo yomkhiqizo.

5. Buyekeza ukuhambisana nomthetho: qinisekisa izinga le-DOTP, zonke ezinye izithako kanye ne-athikili eqediwe ngokuhambisana nezidingo zendawo oya kuyo emakethe.

6. Qinisekisa emgqeni wokukhiqiza: qedela ukukhulisa okulawulwayo ngaphambi kokushintsha indlela yokuhweba.

Izinto Ezicatshangelwayo Zokuphepha Nokulawula ze-DOP kanye ne-DOTP

I-DEHP, into evame ukuthengiswa njenge-DOP, ivela ohlwini lwabazongenela ukhetho lwe-European Chemicals Agency kanye nohlu lokugunyazwa ngenxa yobuthi bokuzala kanye nezakhiwo eziphazamisa i-endocrine. Iphinde imbozwe yimikhawulo ezigabeni ezithile zemikhiqizo ye-EU. I-EU RoHS Directive ikhawulela i-DEHP ezintweni ezifanayo ezisetshenziswa emishinini kagesi neye-elekthronikhi, kuye ngobubanzi kanye nokukhululwa.

E-United States, iKhomishini Yokuphepha Komkhiqizo Wabathengi iyakwenqabela amathoyizi ezingane nezinto zokunakekela izingane eziqukethe i-DEHP engaphezu kuka-0.1% engxenyeni yepulasitiki efinyelelekayo. Amanye amazwe nezigaba zomkhiqizo zisebenzisa imikhawulo ehlukene, ukukhululwa, imibhalo kanye nemithetho yokuhlola.

I-DOTP inobunikazi obuhlukile bamakhemikhali kanye nephrofayili yokulawula, kodwa ukusebenzisa i-DOTP akwenzi ngokuzenzakalelayo umkhiqizo oqediwe ube 'uphephile,' ''' 'izinga lokudla,' ''' 'izinga lezokwelapha,' ''uphephile ngamathoyizi,' ''angena-phthalate,' ''ukuthobela i-REACH' noma 'ukuthobela i-RoHS.' Lezo zimangalo zidinga ubufakazi bezinga elithile lezinto ezibonakalayo, iphakheji ephelele yokwengeza, izimo zokuchayeka, into eqediwe kanye nemakethe.

Izinkomba Ezigunyaziwe

• I-PubChem: I-Di(2-ethylhexyl) phthalate (DEHP)

• I-ECHA: I-Bis(2-ethylhexyl) terephthalate (DOTP/DEHT)

• Uhlu Lwabazongenela I-ECHA: I-Bis(2-ethylhexyl) phthalate (DEHP)

• I-EUR-Lex: Isiqondiso Esidluliselwe ku-RoHS (EU) 2015/863

• I-CPSC yase-US: Izidingo ze-Phthalates kanye ne-FAQ

Imibuzo Evame Ukubuzwa Mayelana ne-DOP kanye ne-DOTP

Uyini umehluko phakathi kwe-DOP ne-DOTP?

I-DOP ivame ukuba yi-DEHP, i-orthophthalate plasticizer. I-DOTP yi-DEHT, i-terephthalate plasticizer. I-DOP ibhekwa njengebalulekile ngenxa yokusebenza kahle kwe-plasticization kanye nezindleko ezimisiwe, kuyilapho i-DOTP ivame ukukhethwa ngenxa yokuguquguquka okuphansi, ukuhlala isikhathi eside okuthuthukisiwe, ukumelana nokufuduka, izakhiwo zikagesi kanye nokubekwa kwe-non-orthophthalate.

Ingabe i-DOP ne-DEHP ziyinto efanayo?

Ekusetshenzisweni okuvamile kwezentengiselwano, i-DOP ivame ukubhekisela ku-DEHP, noma i-bis(2-ethylhexyl) phthalate, i-CAS 117-81-7. Ngenxa yokuthi izifinyezo zingase zingahambisani, qinisekisa igama eliphelele lamakhemikhali kanye nenombolo ye-CAS ngaphambi kokuthenga.

Ingabe i-DOTP ne-DEHT ziyi-plasticizer efanayo?

Yebo. I-DOTP kanye ne-DEHT amagama avamile e-bis(2-ethylhexyl) terephthalate, i-CAS 6422-86-2. I-DEHT ikhomba isakhiwo se-2-ethylhexyl terephthalate ngokunembe kakhudlwana.

Ingabe i-DOTP iyi-plasticizer engena-phthalate?

I-DOTP ngokuvamile ikhangiswa njengengeyona i-phthalate ngoba akuyona i-orthophthalate efana ne-DEHP. 'I-plasticizer engeyona i-orthophthalate' iyincazelo enembile kakhulu ngamakhemikhali. Noma yisiphi isimangalo somkhiqizo oqediwe ongena-phthalate kufanele sisekelwe yincazelo echaziwe kanye nendlela yokuhlola.

Ingabe i-DOTP iphephile kune-DOP?

I-DOTP ikhethwa kabanzi njengenye indlela ngoba i-DEHP ingaphansi kwemingcele emikhulu yokulawula. Kodwa-ke, ukuphepha kuncike ebungozini, ekuvezweni, ekuhlanzekeni, emthamo kanye nokusetshenziswa okuhlosiwe. Akukho pulasitiki okufanele ichazwe njengephephile yonke indawo ngaphandle kobufakazi bokusetshenziswa kwayo ngqo.

Ingabe i-DOTP ingayithatha indawo ye-DOP ngqo?

I-DOTP ingathatha indawo ye-DOP ngezindlela eziningi ze-PVC eziguquguqukayo, kodwa ukushintshaniswa komuntu ngamunye akuqinisekisiwe. Isilinganiso, iziqinisi, izigcwalisi, izinga lokushisa lokucubungula kanye nesikhathi sokuhlanganiswa kungadinga ukulungiswa. Qedela izivivinyo zelebhu kanye nokukhiqiza ngaphambi kokushintshaniswa okugcwele.

Ingabe i-DOTP inikeza ukumelana nokushisa okungcono kune-DOP?

I-DOTP ivame ukukhethwa ngenxa yokuguquguquka okuphansi kanye nokusebenza okuthuthukisiwe kokuguga kokushisa, kodwa inhlanganisela ephelele ye-PVC inquma umphumela wokugcina. Qinisekisa ukusebenza ngokuhlolwa kokunciphisa isisindo, ukugcinwa kokuthamba, ukugcinwa kokunwebeka kanye nokuhlolwa kokuguga okuqondene nesicelo.

Ingabe i-DOTP ifanelekile ekufakweni kwensimbi kanye nekhebula?

I-DOTP ivame ukusetshenziswa kuma-PVC wire and cable compounds aguquguqukayo ngoba ingahlinzeka ngokuvikela ugesi okuwusizo, ukuguquguquka kanye nokuhlala unomphela. I-compound eqediwe kumele isahlangabezane nezinga lekhebula elidingekayo, isilinganiso sokushisa, ukuhlolwa kukagesi, ukuhlolwa kokuguga kanye nezidingo zomlilo.

Ingabe i-DOTP ifanelekile kwi-PVC ethinta ukudla?

Ukufaneleka akuzenzakaleli. Ibanga elithile le-DOTP kanye ne-athikili eqediwe kumele kuhlangabezane nohlu olufanele, imikhawulo yokwakheka, imikhawulo yokufuduka, izinhlobo zokudla, isikhathi sokuxhumana kanye nezimo zokushisa emakethe yokuya kuyo.

Ingabe i-DOP ingasetshenziswa emikhiqizweni yezokwelapha?

I-PVC eyenziwe ngepulasitiki ye-DEHP inokusetshenziswa kwezokwelapha komlando, kodwa lokho kusetshenziswa kungabandakanya ukuhlolwa kwengozi, ukulebula, ukuvezwa kanye nezidingo zomthetho. I-DOP yenhloso evamile akufanele neze imakethwe njengezinga lezokwelapha ngaphandle kwemibhalo yezinto eziqondile, idivayisi kanye nemakethe.

Yimaphi amadokhumenti okufanele abathengi bawacele kumhlinzeki we-plasticizer?

Cela i-SDS, i-TDS, i-COA, igama lamakhemikhali, inombolo ye-CAS, imininingwane yobumsulwa kanye nezimemezelo zomthetho ezifanele. Ukuze uthole ukusetshenziswa okubucayi, cela imibiko yokuhlola umkhiqizo onqunyelwe yinkampani yangaphandle, ukufuduka noma umkhiqizo oqediwe ehambisana nemakethe yendawo oya kuyo.

Isiphetho: Yisiphi i-Plasticizer Okufanele Uyikhethe?

I-DOP ne-DOTP zingenza i-PVC eguquguqukayo ibe yipulasitiki ngempumelelo, kodwa zixazulula izinto eziza kuqala zokuthenga nokusebenza. I-DOP ingase ihlale isebenza emikhiqizweni yezimboni evunyelwe, ebiza kakhulu. I-DOTP ivame ukuba yisiqalo esinamandla lapho ukuhlala unomphela, ukusebenza kukagesi, ukumelana nokufuduka, impilo yesevisi noma imininingwane engeyona i-orthophthalate ibalulekile.

Ukukhetha okungcono kuncike ebulukhunini benhloso, inqubo, izinga lokushisa lesevisi, indawo yokukhipha, impilo yonke, imakethe yendawo kanye nokuhlolwa okudingekayo. Buyekeza imibhalo yobuchwepheshe bese uqinisekisa inhlanganisela ephelele ye-PVC ngaphambi kokukhiqizwa kwezentengiselwano.

Ukuze uthole usizo ekukhetheni ishidi le-PVC noma ifilimu ye-PVC eguquguqukayo, xhumana ne-HSQY Plastic ngohlobo lomkhiqizo wakho, ukujiya, ubukhulu, ukuguquguquka, indlela yokucubungula, izinga lokushisa lesevisi, imakethe yendawo kanye nezidingo zokuthobela imithetho.