Waa maxay HPMC Hydroxypropyl methyl cellulose iyo saamiga sibidhka?
Hoobiyaha dahaarka ah ee injineernimada biyuhu, astaamihiisa waxay ku xiran tahay miisaanka saafiga ah ee soo socda ee alaabta ceeriin ee la sameeyay: La taaban karo 30-340, dhismaha dhismaha qashinka budada leben 40-50, lignin fiber 20-24, calcium formate 4-6,hydroxypropyl methyl cellulose7-9, budada silikoon carbide 40-45, budada calcium hydroxide 10-20, budada corundum brown 10-12, budada wasakhda weyn ee magaalada qalalan 30-35, Datong carrada magaalada 40-45, aluminium sulfate 4-6, carboxymethyl Base istaarijka 20-24, alaabta wax laga beddelay nanotechnology budada kaarboon 4-6, biyaha 600-650;Hoobiyaha dahaarka ee injineernimada biyuhu waxay leedahay dahaarka kulaylka xooggan, caabbinta dabka wanaagsan, isku-xidhka adag ee gidaarka, xoogga cadaadiska, waxqabadka jilicsanaanta, caabbinta gabowga wanaagsan, ilaalinta deegaanka wanaagsan, qoyaanka aadka u fiican, iska caabinta dillaaca, ka hortagga hoos u dhaca.Maanta waxaan ka hadli doonaa oo ku saabsan viscosity of hydroxypropyl methyl cellulose xal aqueous waa dhammaan dhinacyada?Aynu si dhab ah u baranno.
1. Miisaanka molecular ee qaraabada ah, heerkulka xalka aqueous, heerka goynta iyo habka tijaabada ah ee ether cellulose;2. Heerkulka kala-guurka dhalada ee sarreeya, waa ka weyn yahay miisaanka molecular qaraabada, viscosity ee xalku si dabiici ah ayuu u sarreeyaa;3. Maaddada sare ee ether cellulose, waxay sare u kacdaa viscosity ee xalka, sidaas darteed hirgelinta codsiga waa in aan fiiro gaar ah u leenahay qadarka ku haboon ee isku-dhafka, ka hortagga isku-dhafka ayaa aad u sarreeya, oo si toos ah u saameeya sifooyinka hoobiye cement. iyo shubka sibidhka;4. Sida inta badan xalka, viscosity ayaa sidoo kale hoos u dhigi doona kororka heerkulka, oo lagu daray heerka sare ee etherka cellulose, way sii weyn tahay waxyeelada heerkulka;Intaa waxaa dheer, saameynta dhumucda dhabta ah waxay sidoo kale ku kala duwan tahay qiyaasta biyaha loo isticmaalo sibidhka epoxy.
Hydroxypropyl methyl cellulose aqueous xal viscosity sidoo kale u adeegi kartaa sida link muhiim ah comments on sifooyinka ether cellulose, sare viscosity of xal aqueous, ay qaro weyn oo ah alaabta cement epoxy yihiin, ka wanaagsan, on dhabarka guryaha gelling saxan, laakiin haddii viscosity uu aad u weyn yahay, waxay dhaawici doontaa sheyga cement ee epoxy isla markaaba dareeraha iyo xoojinta.Marka loo eego qaar ka mid ah hoobiyeyaasha is-heereeya ee leh dareere sarreeya, viscosity ee etherka cellulose ayaa lagu qeexi doonaa inuu hooseeyo.
Xalka aqueous cellulose ether waa jir pseudoplastic ah, annagu marxaladda dambe ee ogaanshaha heerka xiirid waa ka weyn yahay, viscosity waa yar yahay.
Sidaa darteed, si loo soo koobo waa: isku-dhafka dhoobada sibidhka ayaa hoos u dhigi doona xoogga dibadda, taas oo faa'iido u leh dhismaha injineernimada ee ka dambeeya, laakiin cellulose ether xal aqueous ah oo ku saabsan qiimaha fiirsashada aad u hooseeya, ayaa dhici doona sifooyinka aan- Dareeraha Newtonian, liddi ku ah, marka qiimaha fiirsashada la kordhiyo, xalka biyuhu wuxuu ku dhici doonaa sifooyinka dareeraha pseudoplastic.
Haysashada biyaha ee hydroxypropyl methyl cellulose waa mid ka mid ah sifooyinka muhiimka ah ee hydroxypropyl methyl cellulose.Heerarka uumiga biyaha ee ku jira hoobiye isku dhafan iyo alaabta ku salaysan balastarrada waxaa saameeya heerkulka gaaska, heerkulka iyo heerka cadaadiska.Sidaa darteed, xilliyo kala duwan, oo lagu daray hydroxypropyl methyl cellulose isla qadarka waxtarka biyaha badeecada ayaa leh kala duwanaansho.
Guud ahaan, marka uu sareeyo viscosity of hydroxypropyl methyl cellulose waa, si ka wanaagsan saamaynta dhabta ah ee haysashada biyuhu noqon doonaa, laakiin waxyeellada ku haysashada viscosity ee biyaha waa la dhimi doonaa ka dib markii viscosity ka badan 100,000 Mpa.s.Marka viscosity of HYDROXYpropyl methyl cellulose ka badan yahay 100,000, heerka haynta biyaha si weyn loo hagaajin karaa iyadoo la kordhinayo cadadka hydroxypropyl methyl cellulose.
Habka dhismaha ee faahfaahsan, saamaynta xajinta biyaha ee slurry waxaa lagu hagaajin karaa iyadoo la hagaajinayo qadarka hydroxypropyl methyl cellulose.Badeecadaha taxanaha ah ee Hydroxypropyl methyl cellulose waxay si wax ku ool ah u xalin karaan dhibaatada haynta biyaha ee heerkul sare oo joogto ah.Xilliga heerkulka sare ee joogtada ah, gaar ahaan meelaha kulul iyo caajiska ah iyo dhismaha chromatography ee dhinaca qorraxdu, tayada sare ee HYDROXYpropyl methyl cellulose ayaa loo baahan yahay si loo horumariyo xajinta biyaha ee slurry.
Tayada sare ee hydroxypropyl methyl cellulose, waxa ay leedahay dheelitirnaan wanaagsan, ay butyl iyo hydroxypropyl kooxaha functional oxygen ay weheliyaan qaybinta qaab dhismeedka silsilad molecular fiber wadajirka ah, waxay horumarin kartaa kooxda methyl aldehyde iyo ogsijiinta, iyo tayada biyaha ee qaab digital bond bonds covalent karaa. , noqdaan biyo xidhxidhan iyo biyaha kala firidhsan, ka dibna si wax ku ool ah u xakameeyo cimilada heerkulka sare ee ay sababtay uumiga biyaha, xajinta biyaha sare.
Tayada sare ee hydroxypropyl methyl cellulose ku haboon kartaa dabacsan iyo dhul ganacsi in hoobiye isku qasan iyo alaabta malaastaan, iyo dhammaan qaybaha adag cyst, qoyan, qabow, iyo samaynta lakabka ah ee filimka, qoyaan in muddo dheer dhexdhexaad ah si tartiib tartiib ah u sii daayo saldhigga, iyadoo Bilawga isku-dhafka dabiiciga ah ee falcelinta fuuq-celinta, ka dibna dammaanad qaadka isku-xidhnaanta alaabta ceeriin xoogga cufan iyo xoogga xajinta.In geeddi-socodka dhismaha xagaaga sare joogto ah, sidaas darteed, si ay u gaaraan saamaynta biyaha, waa in ay ahaataa si waafaqsan recipe xaddi gaar ah iyo tayada alaabta cellulose hydroxypropyl methyl, haddii kale, waxay muujin doontaa caajis aad u degdeg ah oo keenaya fuuqbax ku filan, la yareeyo cadaadiska. xoog, kala qaybsanaan, soo baxay tayada sida durbaan madhan metope iyo shaki, sidoo kale ay la socdaan dhibka dhismaha shaqaalaha coefficient.Marka heerkulku hoos u dhaco, qadarka hydroxypropyl methyl cellulose si tartiib ah ayaa loo dhimi karaa waxaana la gaari karaa saameyn la mid ah haynta biyaha.
Haddii ether cellulose aan lagu darin, chromatography ee hoobiye cement cusub si deg deg ah u engejin doonaa, samaynta shubka aan la fuuqayn karaa si caadi ah, taasoo keentay in hoobiye cement ma noqon kartaa mid adag primed iyo heli adhesion ka wanaagsan.Isla mar ahaantaana, ku darida ether cellulose waxay ka dhigaysaa hoobiye sibidhka inay leeyihiin ductility iyo dabacsanaan wanaagsan, waxayna wanaajisaa isku-xidhka xoogga isku-xidhka ee hoobiye sibidhka.
1, hydroxypropyl methyl cellulose cabbirka walxaha
Baaxadda walxaha ether-ka cellulose waxay dhaawacaysaa milmaheeda.Eter-ka cellulose-ka aadka u yar waa, sida ugu dhakhsaha badan heerka burburka ee biyaha iyo sare u qaadida sifooyinka biyaha.Sidaa darteed, xajmiga qaybta etherka cellulose waa in lagu daraa baaritaanka mid ka mid ah sifooyinkeeda.Guud ahaan, cabbirka walxaha ether cellulose ee 80 mesh oo ku salaysan.
2, hydroxypropyl methyl cellulose engegan oo aan heerka cuf
Manic qalalan oo aan lahayn cuf-jiid, waxaa loola jeedaa heerkul gaar ah oo ether manic cellulose ether qalalan, luminta tayada kiimikaad ayaa lagu xisaabtamay boqolkiiba tayada saamiga asalka ah ee halabuurka.Waayo, tayada qaar ka mid ah ether cellulose ee ether qalalan oo aan heerka cuf aad u sarreeya, hoos u dhigi doonaa qaybaha khuseeya ee ether cellulose, waxyeelo saamaynta dhabta ah ee isticmaalka shirkadaha hoose, laakiin sidoo kale hagaajin qiimaha iibka.Caadiyan ether-ka cellulose eter-ka qalalan ee aan lahayn heerka cuf-jiidadu waa inaanu ka badnayn 5.0%.
3, hydroxypropyl methyl cellulose potassium thiocyanate ash
Waayo, tayada qaar ka mid ah ether cellulose ee content ash waa mid aad u sarreeya, hoos u dhigi doonaa ether cellulose ee qaybaha ku habboon, waxyeello saamaynta dhabta ah ee isticmaalka shirkadaha hoose, cellulose ether potassium thiocyanate ash content waa tixgelinta ugu weyn ee sifooyinka u gaar ah. qiimaha index.
4, hydroxypropyl methyl cellulose viscosity
Hydroxypropyl methyl cellulose biyaha haynta iyo saamaynta dhumucdiisuna waa furaha lagu daro sibidhka hoobiye cellulose ether in ay viscosity iyo isku darka u gaar ah.
5, hydroxypropyl methyl cellulose PH qiimaha
Viscosity ee alaabta hydroxypropyl methyl cellulose si tartiib tartiib ah hoos ugu heerkulka sare ama ka dib kaydinta muddo dheer, gaar ahaan alaabta viscosity sare, sidaas darteed qiimaha pH waa in la xaddido.Guud ahaan waxaa lagu qeexay in qaybta qiimaha PH ee etherka cellulose ay tahay in loo shaqeeyo sida 5-9.
6. Gudbinta hydroxypropyl methyl cellulose
Faa'iidooyinka iyo khasaaraha gudbinta hydroxypropyl methyl cellulose waxay si toos ah u saameyn kartaa saameynta dhabta ah ee isticmaalka qalabka dhismaha.Qodobbada asaasiga ah ee waxyeelleeya gudbinta etherka cellulose waa
1) tayada alaabta ceeriin;(2) saamaynta dhabta ah ee dhimashada;(3) Diyaarinta farsamada farsamaynta;(4) diyaarinta dareeraha organic;(5) Saamaynta dhabta ah ee zhonghe.
Marka loo eego saameynta codsiga dhabta ah, gudbinta ether cellulose waa inaysan ka yarayn 80%.
7, hydroxypropyl methyl cellulose heerkul la tuhunsan yahay
Hydroxypropyl methyl cellulose ee qaybaha sibidhka sida furaha lagu kordhinayo xabagta, viscosity iyo wakiilka biyaha, markaa viscosity iyo heerkulka jel waa qiimaha muhiimka ah ee hydroxypropyl methyl cellulose.Heerkulka waxaa loo isticmaalaa in lagu xukumo nooca iyo qeexida ether cellulose, iyo heerka beddelka etherka cellulose ayaa la xidhiidha.
8. Intaa waxaa dheer, milix iyo haraaga ayaa sidoo kale waxyeeleyn doona heerkulka xabagta.Marka heerkulka xalka aqueous kor u kaco, polymer fiber si tartiib ah biyo la'aan, iyo viscosity ee xal aqueous hoos u dhaco.Marka barta koollada la gaaro, polymer si buuxda ayaa loo engejiyey oo koollada ayaa la soo saaraa.Sidaa darteed, heerkulka hawlgalka ee xubnaha sibidhka ayaa inta badan ka hooseeya heerkulka asalka ah.Marka la eego heerkan, heerkulku hoos ayuu u dhacaa, waa uu kordhaa viscosity-ku, iyo waxa ka sii muhiimsan saamaynta dhabta ah ee muuqashada iyo haynta biyaha.
Waqtiga boostada: Jun-09-2022