1. Ushwankathelo lwe-methyl hydroxyythl seluplose (MHC)
I-methyl hydroxyythy seluplose (MHC) yi-ionic selsulose ether efunyenwe kukulungiswa kwe-methytrance ngesiseko se-hydroxyyethyl sellyulose. Ngenxa yesakhiwo sayo esahlukileyo semolekyuli, i-MHC inesimo esihle, esinqeni, i-adhesion, ukwenza ifilimu kunye nomsebenzi womphezulu, kwaye isetyenziswe ngokubanzi kwi-cayishini, iikhemikhali zemihla ngemihla kunye nezinye iikhemisi.
I-2. Ushwankathelo lweepeyinti zepeyinti
Iipeyinti zamalungiselelo eekhemikhali ezisetyenziselwa ukususa iingubo zomphezulu ezinje ngeentsimbi, iinkuni kunye neplastiki. Iipeyinti zepeyinti zemveli ikakhulu zixhomekeke kwiinkqubo ze-harsh i-harsh i-harsh, ezinjengeDichloromethane kunye ne-toluene. Nangona ezi khemikhali ziyasebenza, zineengxaki ezinjengokuguquka okuphezulu, ubuthi kunye neengozi zokusingqongileyo. Ngomthetho oqinileyo wokwanda okusingqongileyo kunye nokuphuculwa kweemfuno zokusebenza zomsebenzi, iipeyinti ezisekwe emanzini kwaye zinetywina ezinamanzi ziye zaya kuba yeyona ntengiso iphambili kwintengiso.
I-3. Indlela yokusebenza ye-MHEC kwipeyinti
Kwipeyinti, i-MHC idlala indima ebalulekileyo njenge-thi cheener kunye ne-raheology modifier:
Isiphumo sokuqaqamba:
I-MHEC inefuthe elihle kakhulu kwiinkqubo ezisekwe emanzini. Ngokuhlengahlengisa i-viscofity yepeyinti yokupeyinta, i-MHC inokwenza umthi wepeyinti athobelele phezulu okanye kumphezulu othe nkqo ngaphandle kokutsala. Le ndawo ibaluleke kakhulu ngexesha lokusetyenziswa kwepeyinti yepeyinti kuba ivumela umhluzi wepeyinti ukuze uhlale kumhlaba ojolise kuyo ixesha elide, ngaloo ndlela ukuphuculwa kwempembelelo yokupeyinta.
Yinze uzinziswe inkqubo yokumiswa:
Iipeyinti ezipeyinti zihlala zinezithako ezisebenzayo, ezinokuthi zikhawuleze okanye zihlale ngexesha lokugcina. Ngokuphucula uVekyuli lolwakhiwo lwesisombululo, i-MHC inokuthintela ngokufanelekileyo i-sedation yamasuntswana aqinileyo, gcina ukusasazwa kwezithako, kwaye uqinisekise ukusebenza ngokuzithandela kwepeyinti yepeyinti.
Lungisa iipropathi zeRheOoology:
Ukusetyenziswa kweepensile zeepeyinti kufuna ukuba ineepropathi ezilungele izinto ezintle, oko kukuthi, inokuhamba kakuhle xa kusetyenziswa amandla angaphandle, kodwa unokukhululeka ngokukhawuleza xa egqitha ngokukhawuleza. Isakhiwo se-molecular se-MHC sisinika i-Sherings elungileyo yokuthoba, oko kukuthi, kumaxabiso ase-Shear, i-viscosity yesisombululo iya kuncipha, esenza kube lula ukupeyinta; Ngexesha lamaxabiso asezantsi asezantsi okanye kwimo yemozulu eqingqiweyo, isisombululo se-vissity iphezulu, enceda ekwenzeni izinto ezenziwa yiyunifom kwindawo ekugxilwe kuyo.
Ukukhuthaza ukwenziwa kwefilimu:
Ngexesha lenkqubo yokupeyinta ipeyinti, i-MHC inokunceda umhluzi wepeyinti kwifilimu efanayo kumhlaba ojolise kuyo. Le filimu ayinakukwenza kuphela ixesha lokuthatha izithako ezisebenzayo, kodwa likomeleze amandla okufihlakeleyo, ukuze ingene ngokukuko kuwo onke amacala okuthuka.
I-4. Ungayisebenzisa njani i-MHEC kwipeyinti
Ukulungiswa kwesisombululo se-acteous:
I-MHEC ihlala ikhona kwifom ye-powder kwaye kufuneka ilungiswe kwisisombululo se-ACTER ngaphambi kokusetyenziswa. Inkqubo ngokubanzi iya kongeza kancinci i-MHEC kumanzi avuyiweyo ukuba aphephe ukwahluka. Kufuneka kuqatshelwe ukuba ukuntywila kwe-MHEC kuya kuchaphazeleka kubushushu bamanzi kunye nexabiso le-pH. Iqondo lokushisa eliphezulu (50-60 ℃) linokukhawulezisa inkqubo yokupheliswa kwe-MHEC, kodwa ubushushu obuphezulu kakhulu buya kuchaphazela ukusebenza kwawo.
Ixutywe kwipeyinti:
Xa ulungiselela iipeyinti zepeyinti, i-MHC Accough idla ngokuthe ngcembe kwipeyinti yepeyinti yolwelo lwepeyinti. Ukuze kuqinisekiswe ukusasazeka okungafaniyo, isantya sokudibanisa se-MHEC akufuneki sibe ngokukhawuleza, kwaye sishukumisa kufuneka siqhubeke isisombululo esilinganayo. Le nkqubo ifuna ukulawula isantya esitshatileyo ukuthintela ukwenziwa kweebhubhu.
Uhlengahlengiso lwefomula:
Isixa-mali se-MHEC kwi-Peet Strippers siqhele ukulungiswa ngokwefomyula ethile kunye nokujongwa kwethagethi yepeyinti. Isixa esongezeleleneyo siphakathi kwe-0.1% -1%. Isiphumo esibi kakhulu sinokubangela ukuba iqengqele okanye i-viscofity egqithileyo, ngelixa i-dosage engapheliyo isenokungafezekisi i-viscofity efanelekileyo kunye neepropathi ze-rihloogical, ke kufuneka ukuba zixhase ukusetyenziswa kwayo ngovavanyo.
I-5. Izibonelelo ze-MHEC kwipeyinti
Ukhuseleko lweNkcubeko:
Xa kuthelekiswa neetrickivers zemveli, i-MHC yi-Ionic seluplose i-ether, ayinazo izinto eziyityhefu neziyingozi, ikhuselekile emzimbeni kunye nokusingqongileyo kunye nokusingqongileyo, kwaye kuhambelana nolwalathiso lophuhliso lwe-chemistry eluhlaza.
Uzinzo olugqwesileyo: I-MHC inozinzo oluhle lweekhemikhali kwi-PH ye-PH (PH 2-12), inokugcina isiphumo esizinzileyo kwiinkqubo ezahlukeneyo zepeyinti, kwaye ayithathwa lula ngamanye amacandelo kwinkqubo.
Ukungqinelana okuhle: Ngenxa yobume be-mhec, kuhambelana ngokufanelekileyo nezithako ezisebenzayo, aziyi kunxibelelana okanye zibangele ukungazinzi kwenkqubo, kwaye kufanelekile ngeendlela ezahlukeneyo zokutyibilika.
Iziphumo ezisebenzayo zokuthinta:
I-Methyl HydroxyEtheetheetheethyl seluplose (MHC) isetyenziswe ngokubanzi kwimithi yepeyinti yale mihla ngenxa yokungazinzi kwawo okugqwesileyo, uzinzo kunye nokuhambelana. Ngoyilo olululo lwefomula kunye nokusetyenziswa kwe-formus, i-MHEC inokuphucula kakhulu ukusebenza kwabahluzi sepeyinti, kubenza babonakalise ukusebenza kakuhle nasekunyuseni kwendalo esingqongileyo kwizicelo ezenziwayo. Kwixa elizayo, ngokuphuhliswa okuqhubekayo kwetekhnoloji yokupeyinta yepeyinti kunye nokuphuculwa kweemfuno zoKhuselo lweNdalo, amathuba okusebenzisa i-MHEC kwipeyinti abanzi.
IXESHA LOKUQALA: Jun-14 ukuya ku-2424