Methylhydroxyethylcellulose (MHEC) imagwira ntchito yofunika kwambiri pakuwongolera kusasinthika kwa putty, zinthu zomwe zimagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana kuphatikiza zomangamanga, zamagalimoto ndi kupanga.Nkhaniyi ikupereka kusanthula mozama za katundu wa MHEC ndi zotsatira zake pakusintha kwa putty consistency.Imawunika kapangidwe kake, kapangidwe kazinthu, ndi machitidwe a MHEC pamapangidwe a putty.
Putty ndi zinthu zosunthika zomwe zimagwiritsidwa ntchito kwambiri pomanga, kukonza magalimoto, kupanga ndi mafakitale ena osiyanasiyana.Kusasinthika kwake ndi chinthu chofunikira kwambiri pakuzindikira momwe angagwiritsire ntchito komanso magwiridwe antchito osiyanasiyana.Kukwaniritsa kusasinthika komwe kukufunika kwa putty kumafuna kuthana ndi zovuta zosiyanasiyana monga kuwongolera ma viscosity, magwiridwe antchito ndi zomatira.Methylhydroxyethylcellulose (MHEC) imatuluka ngati chowonjezera chachikulu chomwe chimawonjezera kusasinthika kwa putty ndikukulitsa mawonekedwe ake.
1. Mapangidwe a Chemical ndi katundu wakuthupi wa MHEC
MHEC ndi nonionic cellulose ether yomwe imapezeka ndi kusintha kwa mankhwala a cellulose.Amapangidwa pochita ma cellulose ndi ethylene oxide ndi methyl chloride kuti ayambitse magulu a hydroxyethyl ndi methyl mu tcheni chachikulu cha cellulose.Mlingo wa substitution (DS) wa magulu a hydroxyethyl ndi methyl umakhudza kwambiri zinthu za MHEC, kuphatikiza kusungunuka, kukhuthala, ndi machitidwe a rheological.
Mapangidwe a mamolekyu a MHEC amapatsa katundu wapadera, ndikupangitsa kuti ikhale yabwino kwa ntchito zosiyanasiyana, kuphatikiza ma putty formulations.MHEC ili ndi kusungunuka kwamadzi kwabwino kwambiri ndipo imapanga njira yowonekera komanso yokhazikika ikamwazikana m'madzi.Kusungunuka kumeneku kumathandizira kugawa ngakhale mkati mwa putty matrix, kuwonetsetsa kuti magwiridwe antchito amasinthasintha kuchokera pagulu kupita pagulu.
MHEC imapereka machitidwe a pseudoplastic rheological to putty formulations, kutanthauza kuti mamasukidwe ake amachepa ndi kumeta ubweya wambiri.Izi rheological katundu timapitiriza putty a workability, chomasuka ntchito ndi kuwumba, kukhalabe okwanira sag kukana ndi thixotropic khalidwe.
MHEC ili ndi zinthu zabwino kwambiri zopangira mafilimu, zomwe zimathandiza kupititsa patsogolo mphamvu zogwirizanitsa ndi kumamatira kwa putty ku gawo lapansi.Kuthekera kwake kupanga filimu kumapanga chotchinga choteteza, kukulitsa kulimba komanso kukana nyengo, kupangitsa putty kukhala yoyenera kugwiritsa ntchito kunja.
2. Njira yogwiritsira ntchito MHEC mu mapangidwe a putty
Udindo wa MHEC pakuwongolera kusasinthika kwa putty ndi wosiyanasiyana ndipo umaphatikizapo njira zingapo zochitira zomwe zimakhudza mawonekedwe ake komanso magwiridwe antchito.
Njira imodzi yoyambira ndi hydration ndi kutupa kwa mamolekyu a MHEC m'madzi opangidwa ndi putty formulations.Akamwazika m'madzi, unyolo wa MHEC umatulutsa madzi, zomwe zimapangitsa kuti pakhale network ya hydrated polima mkati mwa putty matrix.Kapangidwe ka netiweki kameneka kamapereka mawonekedwe a putty viscosity ndi pseudoplastic, kuwalola kuti aziyenda mosavuta pansi pa kumeta ubweya ndikusunga mawonekedwe ake okhazikika komanso kulumikizana.
MHEC imagwira ntchito ngati thickener powonjezera kukhuthala kwa gawo lamadzi mumtundu wa putty.Chikhalidwe cha hydrophilic cha MHEC chimalimbikitsa kusunga madzi, kuteteza kuphulika kwakukulu ndi kuyanika kwa putty panthawi yogwiritsira ntchito.Kuthekera kosunga madzi kumeneku kumakulitsa nthawi yotseguka ya putty, kulola nthawi yokwanira kuti igwire ntchito isanakhazikitsidwe, kukulitsa kusinthasintha kwa ntchito ndikuchepetsa kuwononga zinthu.
MHEC imagwira ntchito ngati binder ndi stabilizer mu putty formulations.Popanga zomangira za haidrojeni ndi zinthu zina monga zodzaza, utoto ndi ma polima.Kuyanjana uku kumalimbikitsa kufanana komanso kubalalitsidwa kofanana kwa zowonjezera mkati mwa putty matrix, motero kumawonjezera mphamvu zamakina, kusasinthika kwamitundu ndi magwiridwe antchito onse.
MHEC imathandizira ku khalidwe la thixotropic la putty, kutanthauza kuti limasonyeza kukhuthala kwapamwamba pa mpumulo komanso kutsika kwa mamasukidwe amphamvu pansi pa kumeta ubweya wa ubweya.Katunduyu amathandizira kugwiritsa ntchito mosavuta ndikufalikira kwa putty ndikupewa kugwa kapena kugwa pamalo oyimirira.The thixotropic chikhalidwe cha putty formulations munali MHEC amaonetsetsa mulingo woyenera Kuphunzira ndi ofanana ntchito zigawo, potero utithandize aesthetics ndi pamwamba mapeto.
3. Zinthu zomwe zimakhudza kusasinthika kwa putty ndi udindo wa MHEC
Pali zinthu zambiri zomwe zimakhudza kusasinthika kwa ma formula a putty, kuphatikiza mtundu ndi mtundu wa zida zopangira, magawo a formula, momwe zinthu zimagwirira ntchito komanso zachilengedwe.MHEC imagwira ntchito yofunika kwambiri pothana ndi izi ndikukulitsa kusasinthika kwa putty kuti ikwaniritse zofunikira zinazake.
Chofunika kwambiri ndi kukula kwa tinthu ndi kugawa kwa zodzaza ndi inki mu mapangidwe a putty.Fine particles amakonda kuonjezera mamasukidwe akayendedwe ndi thixotropy, pamene coarse particles akhoza kuchepetsa otaya ndi ofanana.MHEC imathandizira kuchepetsa zovutazi polimbikitsa kubalalitsidwa kofanana ndi kuyimitsidwa kwa tinthu tating'onoting'ono mkati mwa putty matrix, kuwonetsetsa kukhazikika kokhazikika komanso machitidwe a rheological.
Kuchuluka ndi kuyanjana kwa zigawo zosiyanasiyana mu fomula ya putty kumakhudzanso kusasinthika ndi magwiridwe antchito a putty.MHEC imagwira ntchito ngati compatibilizer ndi rheology modifier, kulimbikitsa kuphatikizika kwa zowonjezera zosiyanasiyana monga resins, plasticizers ndi rheology modifiers.Katundu wake wosunthika amalola opanga ma formula kuti asinthe ndikusintha bwino mawonekedwe a putty kuti agwirizane ndi zofunikira zinazake.
Kukonzekera magawo monga kusakaniza liwiro, kutentha, ndi kumeta ubweya kungakhudze kubalalitsidwa ndi kuyanjana kwa MHEC mu mapangidwe a putty.Kupititsa patsogolo magawowa kumapangitsa kuti ma hydration ayende bwino komanso kutsegulira kwa mamolekyu a MHEC, kukulitsa kukhuthala kwawo, kukhazikika, komanso kumangirira.
Kuphatikiza apo, zinthu zachilengedwe monga chinyezi, kutentha ndi gawo lapansi zimatha kukhudzanso kugwiritsa ntchito komanso kuchiritsa kwa putty.MHEC imakulitsa kusungirako madzi ndi kumamatira kwa putty, ndikupangitsa kuti ikhale yoyenera pamitundu yosiyanasiyana yazachilengedwe ndi zida zapansi.
4. Njira zogwiritsira ntchito ndi kulingalira kwa mlingo
Kugwiritsa ntchito moyenera kwa MHEC pamapangidwe a putty kumafuna kuwunika mosamalitsa njira zogwiritsira ntchito komanso milingo ya mlingo kuti mukwaniritse zomwe mukufuna komanso magwiridwe antchito.Kusakaniza koyenera, kugwiritsa ntchito ndi kuchiritsa njira ndizofunikira kuti zitsimikizire kugawa kofanana ndi kuyambitsa kwa MHEC mkati mwa putty matrix.
Panthawi yopanga mapangidwe, ndikofunikira kudziwa kuchuluka kwabwino kwa MHEC kutengera zofunikira zantchito monga kukhuthala, kukana kwa sag, ndi nthawi yowuma.Kuchuluka kwa MHEC komwe kumagwiritsidwa ntchito kumatha kusiyanasiyana malinga ndi zinthu monga mtundu wa putty, njira yogwiritsira ntchito, mikhalidwe yagawo ndi zinthu zachilengedwe.
Malingana ndi chikhalidwe cha gawo lapansi, zomwe zimafunidwa pamwamba ndi zofunikira za polojekiti, njira zosiyanasiyana zomangira zingagwiritsidwe ntchito, kuphatikizapo kupopera pamanja, kupopera mankhwala ndi extrusion.Mapangidwe a Putty omwe ali ndi MHEC amawonetsa kugwirizana bwino ndi njira zosiyanasiyana zogwiritsira ntchito, kulola kusinthasintha komanso kusinthasintha pogwiritsira ntchito.
Nthawi yotumiza: Feb-28-2024