1. Zomangamanga za Mamolekyulu ndi Zoyambira za Colloidal za Ultrafine Zinc Stearate Emulsions
1.1 Chemical Make-up ndi Surfactant Zochita za Zinc Stearate
(Ultrafine Zinc Stearate Emulsions)
Zinc stearate, mankhwala amatchedwa zinc bis(octadecanoate) [Zn(C ₁₇ H ₃₅ COO)₂], ndi gulu la organometallic lodziwika ngati sopo wachitsulo, opangidwa ndi kuyankha kwa stearic acid– mafuta odzaza ndi unyolo wautali– ndi zinc oxide kapena zinc salt.
Mu mtundu wake wamphamvu, imagwira ntchito ngati hydrophobic lube ndi kutulutsa woyimira, Komabe, pamene woyengedwa mpaka mu ultrafine emulsion, mphamvu zake zimawonjezeka kwambiri chifukwa cha kuchuluka kwa dispersibility ndi interface ntchito.
Chigawocho chimakhala ndi polar, ionic zinki-muna mutu gulu ndi 2 michira yayitali ya hydrophobic alkyl, kupereka ma amphiphilic makhalidwe omwe amawalola kuti azigwira ntchito ngati mafuta amkati, choletsa madzi, ndi zosintha zamtundu wamitundu yosiyanasiyana.
Mu madzi zothetsera, Zinc stearate sisungunuka, komabe, imapanga ma colloidal dispersions otetezeka pomwe tinthu tating'onoting'ono timakhazikika ndi ma surfactants kapena ma polymeric dispersants motsutsana ndi kusonkhanitsa..
The “ultrafine” Matchulidwe amafotokoza miyeso ya madontho kapena zidutswa zomwe zalembedwa pansipa 200 nanometers, nthawi zambiri mumitundu 50– 150 nm, zomwe zimakulitsa kwambiri tsatanetsatane wa dera komanso kukhudzidwa kwa gawo lofalikira.
Kubalalika kwa nanoscale ndikofunika kwambiri kuti tikwaniritse kugawa kofanana mu matrices ovuta kwambiri monga ma polymer thaws., zigawo, ndi machitidwe a simenti, kumene ma macroscopic agglomerates angawononge ntchito yake.
1.2 Njira Zopangira Mayankho ndi Kukhazikika
Kukonzekera kwa ultrafine zinc stearate emulsions kumaphatikizapo njira zobalalitsa zopatsa mphamvu zambiri monga kuthamanga kwamphamvu kwambiri., ultrasonication, kapena microfluidization, zomwe zimathyola tinthu tating'onoting'ono m'mayina amtundu wa nanoscale mkati mwa gawo lamadzi lopitilira.
Kuletsa coalescence ndi Ostwald kucha– njira zomwe zimasokoneza ma colloids– ma surfactants anionic kapena anionic (mwachitsanzo, ethoxylated mowa, mchere dodecyl sulphate) amagwiritsidwa ntchito kuchepetsa kusagwirizana pakati pa nkhope ndikupereka electrostatic kapena steric stablizing.
Kusankhidwa kwa emulsifier ndikofunikira: iyenera kugwira ntchito ndi zomwe mukufuna kugwiritsa ntchito, kukhala osasokonezeka ndi njira zotsika pansi monga machiritso a polima kapena konkriti.
Kuphatikiza apo, co-emulsifiers kapena cosolvents atha kuperekedwa kuti apange kusintha kwa hydrophilic-lipophilic balance. (Zithunzi za HLB) wa dongosolo, kuonetsetsa chitetezo chokhazikika cha colloidal pansi pa pH yosiyana, kutentha, ndi zovuta za ionic.
The chifukwa emulsion zambiri yamkaka woyera, otsika mamasukidwe akayendedwe, ndi bwino mixable ndi madzi ofotokoza formulations, kupangitsa kuphatikizika kosalala mumizere yopangira malonda popanda zida zosinthidwa makonda.
( Ultrafine Zinc Stearate Emulsions)
Mayankho opangidwa bwino a ultrafine amatha kukhala osasunthika kwa miyezi ingapo, kukana kulekana kwa gawo, sedimentation, kapena gelation, chomwe chili chofunikira kuti chisasunthike pakupanga kwakukulu.
2. Kusamalira Technologies ndi Bit Size Control
2.1 Njira Zobalalitsira Mphamvu Zapamwamba ndi Nanoemulsification Strategies
Kukwaniritsa ndi kusunga ultrafine tinthu kukula kumafuna ulamuliro ndendende mphamvu athandizira ndi ndondomeko specifications lonse emulsification.
High-pressure homogenizers amagwira ntchito mopitilira kupsinjika 1000 bala, kukakamiza pre-emulsion kudzera m'mizere yocheperako pomwe kukameta ubweya wambiri, cavitation, ndi tizidutswa ta zosokoneza mpaka mu nanometer array.
Akupanga mapurosesa kubala lamayimbidwe cavitation mu madzi chida, kutulutsa mafunde amderamo omwe amacheperachepera ndikulengeza kufalikira kwa madontho ofanana.
Microfluidization, kupititsa patsogolo kwaposachedwa, imagwiritsa ntchito ma microchannel okhazikika a geometry kuti apange madera ometa ubweya wofanana, kupangitsa kuti zikhale zotheka kuchepetsa kukula kwapang'ono kocheperako ndi ma polydispersity indices (PDI < 0.2).
Ukadaulowu sikuti umangochepetsa kukula kwa tinthu, komanso umapangitsa kuti crystallinity ikhale yofanana ndi zinc stearate particles., zomwe zimakhudza khalidwe lawo losungunuka ndi kugwirizana ndi zipangizo zogwirira ntchito.
Masitepe okonzanso pambuyo pake monga kuyeretsa angagwiritsidwe ntchito kuti athetse mtundu uliwonse wa zotsalira zotsalira., kupanga chinthu china kukhala chofanana ndikupewa zovuta pakugwiritsa ntchito mopepuka monga zophimba zafilimu zoonda kapena jekeseni.
2.2 Makhalidwe ndi Chitsimikizo Chapamwamba
Kuchita bwino kwa ma emulsions a ultrafine zinc stearate kumalumikizidwa mwachindunji ndi nyumba zawo zakuthupi ndi zamkati., kufunikira kowunikira molimbika.
Kuwala kwamphamvu kubalalika (DLS) amagwiritsidwa ntchito pafupipafupi kuyeza ma hydrodynamic m'mimba mwake ndi kugawa kukula kwake, pomwe zeta mphamvu kusanthula kusanthula kukhazikika kwa colloidal– zamtengo wapatali kuposa ± 30 mV nthawi zambiri amawonetsa kukhazikika kwa electrostatic.
Kutumiza ma electron microscopy (Mtengo wa TEM) kapena microscope ya atomiki (AFM) imapereka chithunzithunzi chowongoka cha fragment morphology ndi mtundu wa kufalikira.
Njira zowunikira matenthedwe monga kusiyanitsa kusanthula kwa calorimetry (DSC) kudziwa chomwe chimasungunuka (~ 120– 130 °C) ndi akaunti ya kuwonongeka kwa kutentha, zomwe ndizofunika kwambiri pamapulogalamu omwe ali ndi kutentha kwambiri.
Kuphatikiza apo, kuyesa chitetezo pansi pa zovuta zowonjezereka (kutentha kwapamwamba, kuzizira kozizira) imatsimikizira moyo wa alumali komanso kulimba panthawi yamayendedwe ndi malo osungira.
Othandizira amawunikanso magwiridwe antchito pogwiritsa ntchito mayeso okhudzana ndi ntchito, monga slip angle dimension for lubricity, Madzi okhudzana ndi hydrophobicity, kapena kufalikira kofanana mumagulu a polima.
3. Ntchito Zothandiza ndi Zida Zochita Mwachangu mu Zida Zamakampani
3.1 Mafuta Opaka Mkati ndi Akunja mu Polima Handling
Mu mapulasitiki ndi kupanga mphira, Ma emulsions a ultrafine zinc stearate amakhala ngati mafuta abwino kwambiri mkati ndi kunja..
Akaphatikizidwa mu polima amasungunuka (mwachitsanzo, Zithunzi za PVC, polyolefins, polystyrene), ma nanoparticles amasamukira kumalo olumikizirana, kuchepetsa kukhuthala kwa kusungunuka ndi kukangana pakati pa maunyolo a polima ndi zida zogwirira ntchito.
Izi zimachepetsa kugwiritsa ntchito mphamvu panthawi ya extrusion ndi kuwombera, amachepetsa kuchuluka kwa kufa, komanso kumawonjezera kutha kwa magawo owumbidwa.
Chifukwa cha kukula kwawo kochepa, Tinthu tating'onoting'ono ta ultrafine timagawa mofanana kwambiri kuposa ufa wa zinc stearate, kuteteza kumadera omwe ali ndi mafuta ambiri omwe angawononge nyumba zamakina.
Amagwiranso ntchito ngati nthumwi zakunja, kupanga nyemba, filimu yopanda ndodo pa nkhungu ndi mildew zomwe zimathandiza ndi kutulutsa mbali popanda kusonkhanitsa ndalama.
Kuthekera kwapawiri kumeneku kumapangitsa kuti zinthu ziziyenda bwino komanso kuti zinthu zikhale bwino m'malo othamanga kwambiri.
3.2 Kuchotsa Madzi, Anti-Caking, ndi Zotsatira Zosintha Malo Apamwamba
Kupaka mafuta m'mbuyomu, zothetsera izi zimapereka hydrophobicity ku ufa, kumaliza, ndi zomangira.
Mukayika pa simenti, mitundu, kapena ufa wamankhwala, Zinc stearate imapanga zokutira za nano zomwe zimathamangitsa kunyowa, kuteteza kuyika ndi kupititsa patsogolo kuyenda panthawi yosungira ndi kusamalira.
Mu kumanga zophimba ndi kumasulira, Kuphatikizidwa kwa emulsion kumawonjezera kukana kwamadzi, kuchepetsa kuyamwa kwamadzi ndikuwongolera kulimba motsutsana ndi nyengo ndi kuwonongeka kwa kuzizira.
Dongosololi limaphatikizapo kuyika kwa tinthu tating'ono ta stearate pamalo olumikizirana, yokhala ndi michira ya hydrophobic yowonekera pazikhazikiko, kutulutsa mphamvu yochepa yomwe imayima mpaka kunyowetsa.
Komanso, muzinthu zophatikizika, zinc stearate imatha kusintha mayendedwe a filler-matrix, kupititsa patsogolo kubalalitsidwa kwa zodzaza ma inorganic monga calcium carbonate kapena talc mu matrices a polima.
Kuphatikizana kumeneku kumachepetsa kusinthasintha komanso kumapangitsa kuti makina azigwira ntchito bwino, makamaka makamaka mphamvu ndi kutalikitsa panthawi yopuma.
4. Ma Domain Ogwiritsa Ntchito ndi Emerging Technical Frontiers
4.1 Zida Zomangamanga ndi Zida Zopangira Simenti
Pamsika womanga, Mayankho a ultrafine zinc stearate amagwiritsidwa ntchito pang'onopang'ono ngati hydrophobic admixtures mu konkire., matope, ndi pulasitala.
Amachepetsa kuyamwa kwamadzi a capillary popanda kuwononga mphamvu yopondereza, Chifukwa chake, onjezerani kukana kwa chloride ingress, sulphate kuukira, ndi dzimbiri lopangidwa ndi carbonation lachitsulo chowonjezera.
Mosiyana admixtures chikhalidwe zimene zingakhudze kukhazikitsa nthawi kapena mpweya entrainment, zinc stearate solutions ndi intramul innert in alkaline zoikamo ndipo samasokoneza simenti hydration..
Kubalalika kwawo kwa nanoscale kumatsimikizira chitetezo chofanana pamatrix onse, ngakhale pa mlingo wochepa (kawirikawiri 0.5– 2% ndi kulemera kwa konkire).
Izi zimawapangitsa kukhala abwino kwambiri pantchito zomanga m'mphepete mwa nyanja kapena kumadera komwe kumakhala chinyezi chambiri komwe kulimba kwanthawi yayitali ndikofunikira..
4.2 Zapamwamba Kupanga, Zodzoladzola, ndi Nanocomposites
Mu kupanga mwatsopano, mayankho awa amagwiritsidwa ntchito mu ufa wosindikiza wa 3D kuti apititse patsogolo kufalikira ndikuchepetsa kukhudzidwa kwa chinyezi.
Mu zodzoladzola ndi munthu mankhwala zinthu, amagwira ntchito ngati zosintha zowoneka bwino komanso zoteteza madzi mumaziko, milomo, ndi sunscreens, kupereka kumverera kopanda mafuta komanso kukulitsa kufalikira.
Mapulogalamu omwe akubwera amaphatikizanso kugwiritsidwa ntchito kwawo pamakina oletsa moto, kumene zinc stearate imagwira ntchito ngati synergist polimbikitsa chitukuko cha char mu matrices a polima, komanso m'malo odziyeretsa okha omwe amaphatikiza hydrophobicity ndi ntchito ya photocatalytic.
Kafukufuku akuwunikanso kuphatikiza kwawo kukhala zomaliza zanzeru zomwe zimakhudzidwa ndi kukopa kwachilengedwe, monga chinyezi kapena makina nkhawa.
Powombetsa mkota, Mayankho a ultrafine zinc stearate amawonetsa momwe mapangidwe a colloidal amasinthira chowonjezera chokhazikika kukhala chinthu chothandiza kwambiri..
Pochepetsa gawo lachidutswa ku nanoscale ndikuchirikiza kufalikira kwamadzi, machitidwe awa amapeza kufanana kwapamwamba, kumva, ndi kuyanjana pamitundu ingapo yazamalonda.
Monga zofunika kwa dzuwa, kupirira, ndi kukhazikika kukula, Mayankho a ultrafine zinc stearate apitiliza kugwira ntchito yofunika kwambiri kuti athe kupanga zida ndi njira za m'badwo wotsatira..
5. Wofalitsa
RBOSCHCO ndi ogulitsa odalirika padziko lonse lapansi & wopanga ndi over 12 zaka zambiri popereka mankhwala apamwamba kwambiri komanso Nanomaterials. Kampaniyo imatumiza kumayiko ambiri, monga USA, Canada, Europe, UAE, South Africa, Tanzania, Kenya, Egypt, Nigeria, Cameroon, Uganda, nkhukundembo, Mexico, Azerbaijan, Belgium, Cyprus, Czech Republic, Brazil, Chile, Argentina, Dubai, Japan, Korea, Vietnam, Thailand, Malaysia, Indonesia, Australia,Germany, France, Italy, Portugal etc. Monga wopanga chitukuko cha nanotechnology, RBOSCHCO imalamulira msika. Gulu lathu la akatswiri ogwira ntchito limapereka mayankho abwino kwambiri othandizira kukonza magwiridwe antchito amakampani osiyanasiyana, pangani mtengo, ndi kuthana mosavuta ndi zovuta zosiyanasiyana. Ngati mukuyang'ana zinc stearate, chonde tumizani imelo ku: [email protected]
Tags: Ultrafine zinc stearate, zinc stearate, emulsion ya zinc stearate
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