Heerka dhismaha ee MHEC

Heerka dhismaha MHEC

Heerka dhismaha MHEC Methyl HydroxyethylCilosewaa budo cad oo aan ur lahayn, dhadhamin, aan sun ahayn oo lagu milmi karo biyo qabow si loo sameeyo xal muuqda. Waxay leedahay sifooyinka dhumuc, isku-xidhka, kala firdhinta, emulsification, samaynta filimka, joojinta, adsorption, gelation, dhaqdhaqaaqa dusha sare, xajinta qoyaanka iyo kolloid ilaalinta. Maadaama xalka aqueous uu leeyahay shaqo firfircoon oo dusha sare ah, waxaa loo isticmaali karaa sida wakiilka ilaalinta kolloidal, emulsifier iyo kala-firdhiye. Heerka dhismaha ee MHEC methyl Hydroxyethylcellulose xal aqueous ah ayaa leh biyo-biyood wanaagsan waana wakiilka biyaha-haynta hufan. Hydroxyethyl methyl cellulose waxa ku jira kooxaha hydroxyethyl, sidaas darteed waxa ay leedahay awood ka hortag ah oo wanaagsan, xasiloonida viscosity wanaagsan iyo caariyaysi ka hortagga inta lagu jiro kaydinta muddada-dheer.

Astaamaha jireed iyo kiimikaad:

Muuqashada: MHEC waa caddaan ama ku dhawaad ​​cad budo granular ah; aan ur lahayn.

Solubility: MHEC waxay ku milmi kartaa biyo qabow iyo biyo kulul, qaabka L wuxuu ku milmi karaa biyo qabow oo keliya, MHEC waa mid aan milmi karin inta badan dareerayaasha organic. Ka dib daaweynta dusha sare, MHEC waxay ku kala firdhisaa biyo qabow iyada oo aan la kicin, oo si tartiib ah u milmaan, laakiin si dhakhso ah ayaa loo kala diri karaa iyada oo la hagaajinayo qiimaha PH ee 8 ~ 10.

Xasiloonida PH: Viscosity-ku wax yar ayuu isu beddelaa inta u dhaxaysa 2 ~ 12, mawgu wuu yaraadaa wixii ka baxsan xadkan.

Granularity: 40 mesh heerka kaarka mesh ≥99% 80 mesh heerka kaarka mesh 100%.

Cufnaanta muuqata: 0.30-0.60g/cm3.

Darajooyinka Alaabta    

Codsiga 

Heerka dhismaha MHEC methyl Hydroxyethyl cellulose waxaa loo isticmaali karaa sida kolloid ilaalin ah, emulsifier iyo kala firdhiso sababtoo ah shaqada firfircoon ee dusha sare ee xalkeeda aqueous. Tusaalooyinka codsiyadeedu waa sida soo socota:

1. Saamaynta methylhydroxyethylcellulose ee waxqabadka sibidhka.Dhismaha darajada MHEC methylHydroxyethylcellulose waa ur aan ur lahayn, dhadhamin, budo cad oo aan sun ahayn oo lagu milmi karo biyo qabow si ay u sameeyaan xal viscous ah oo hufan. Waxay leedahay sifooyinka dhumuc, isku-xidhka, kala firdhinta, emulsification, samaynta filimka, joojinta, adsorption, gelation, dhaqdhaqaaqa dusha sare, xajinta qoyaanka iyo kolloid ilaalinta. Tan iyo markii xal aqueous uu leeyahay shaqo firfircoon dusha, waxa loo isticmaali karaa sida kolloid ah ilaalinta, emulsifier iyo dispersant.Building fasalka MHEC methyl Hydroxyethyl cellulose xal aqueous uu leeyahay hydrophilicity wanaagsan iyo waa wakiil biyo haynta hufan.
2. Diyaarso rinjiga gargaarka leh dabacsanaan sare, kaas oo ka samaysan qaybaha soo socda miisaanka alaabta ceeriin: 150-200g oo biyo ah oo la jarjaray; 60-70 g oo ah emulsion akril saafi ah; 550-650 g oo ah calcium culus; 70-90 g oo ah hilibka lo'da; 30-40 g oo ah methyl cellulose xal aqueous; 10-20 g oo ah xal aqueous lignocellulose; 4-6 g oo ah qalabka wax lagu sameeyo; 1.5-2.5 g oo ah fungicides antiseptic; 1.8-2.2g oo kala firidhsan; 1.8-2.2g oo ah wakiilka qoynta; Dhumucda 3.5-4.5g; ethylene glycol 9-11 g; heerka dhismaha ee MHEC aqueous aqueous wuxuu ka samaysan yahay 2-4% heerka dhismaha MHEC oo lagu milmay biyo; ahfiber cellulosexal aqueous waxa laga sameeyaa 1-3%fiber cellulosewaxaa lagu sameeyaa iyadoo lagu milmo biyaha.

Sida loo soo saaroHeerka dhismaha ee MHEC?

Thewax soo saarkaHabka dhismaha darajada MHEC methyl hydroxyethyl cellulose waa in suufka la safeeyey loo isticmaalo alaab ceeriin ah iyo ethylene oxide waxaa loo isticmaalaa sidii wakiilka etherifying si loogu diyaariyo darajada Dhismaha MHEC. Qalabka ceeriin ee loogu talagalay diyaarinta heerka dhismaha MHEC waxaa lagu diyaariyaa qaybo miisaan: 700-800 qaybood oo toluene ah iyo isku-darka isopropanol sida dareeraha, 30-40 qaybood oo biyo ah, 70-80 qaybaha sodium hydroxide, 80-85 qaybaha suufka la safeeyey, giraanta 20-28 qaybaha oxyethane, 80-90 qaybaha methyl chloride, 16-19 qaybaha glacial acetic acid; Tallaabooyinka gaarka ah waa sida soo socota:

Talaabada ugu horeysa, ku dar isku dar ah toluene iyo isopropanol, biyo, iyo sodium hydroxide kiliyaha falcelinta, kor u qaad heerkulka ilaa 60-80 ° C, oo ku hay 20-40 daqiiqo;

Tallaabada labaad, alkalization: qabooji walxaha kor ku xusan 30-50 ° C, ku dar suuf la safeeyey, ku buufin isku dar ah toluene iyo isopropanol, u daadgureynta 0.006Mpa, buuxi nitrogen ee 3 beddelka, oo samee alkalis ka dib beddelka Xaaladaha alkalization waa sida soo socota: waqtiga alkalization waa 2 saacadood, iyo alkalization heerkulka waa 30 ℃-50℃;

Tallaabada saddexaad, etherification: alkalization ka dib, reactor waxaa loo daadgureeyay 0.05～0.07MPa, ethylene oxide iyo methyl chloride ayaa lagu daray waxaana lagu hayaa 30～50 daqiiqo; Marxaladda koowaad ee etherification: 40～60℃, 1.0～2.0 Saacadaha, cadaadiska waxaa lagu xakameynayaa inta u dhaxaysa 0.15-0.3Mpa; Marxaladda labaad ee etherification: 60～90℃, 2.0～2.5 saacadood, cadaadiska waxaa lagu xakameynayaa inta u dhaxaysa 0.4-0.8Mpa;

Talaabada afraad, dhexdhexaadin: horay ugu dar aashitada glacial acetic acid ee mitirka ah, ku cadaadi walxaha etherified ee dhexdhexaadinta, kordhi heerkulka ilaa 75～80 ℃ ee kala-saarista, heerkulku wuxuu kor u kici doonaa 102 ℃, qiimaha pH wuxuu noqon doonaa 68. Marka la dhammeeyo burburka; Ku buuxi kiliyaha baabi'inta biyaha tuubada oo lagu daweeyay aaladda osmosis ee 90 ℃～100 ℃;

Talaabada shanaad, dhaqidda centrifugal: Qalabka ku jira tallaabada afraad waxaa lagu dhejiyaa xargo toosan oo siman, iyo alaabta la kala soocay ayaa loo wareejiyaa weel lagu dhaqo oo horay loogu shubay biyo kulul si loogu dhaqo alaabta;

Talaabada lixaad, qalajinta centrifugal: alaabta la dhaqay waxaa lagu soo qaadaa qalajiyaha iyada oo loo marayo centrifuge toosan, alaabta waxaa lagu qallajiyaa 150-170 ° C, alaabta la qalajiyey waa la jajabiyey oo la duubay.

Marka la barbar dhigo tignoolajiyada wax soo saarka ether cellulose ee jira, haddahabka wax soo saarkawaxay isticmaashaa ethylene oxide sida wakiilka etherifying si ay u diyaariso dhismaha heerka MHEC methyl hydroxyethyl cellulose, iyo sababtoo ah waxa ku jira kooxaha hydroxyethyl, waxay leedahay awood antifungal wanaagsan. Degganaanshaha viscosity ee wanaagsan iyo caabbinta caariyaysiga inta lagu jiro kaydinta muddada dheer. Waxay bedeli kartaa ether-yada kale ee cellulose.

Bheerka sare ee MHECwaa derivatives cellulose ether,Cellulose ether waa maaddo kiimiko ah oo wanaagsan oo leh noocyo badan oo adeegsiyeed oo laga sameeyay cellulose polymer-ka dabiiciga ah iyada oo loo marayo daawaynta kiimikada. Tan iyo markii nitrate cellulose iyo acetate cellulose la sameeyay qarnigii 19aad, farmashiyeyaashu waxay soo saareen taxane badan oo ka mid ah derivatives cellulose ee ethers cellulose. Goobo cusub oo codsi ah ayaa si joogto ah loo helaa waxaana ku lug leh qaybo badan oo warshado ah. Alaabooyinka cellulose ether sida sodium carboxymethyl cellulose (CMC), ethyl cellulose (EC), hydroxyethyl cellulose (HEC), hydroxypropyl cellulose (HPC), methyl hydroxypropyl cellulose (MHEC) iyo methyl hydroxypropyl cellulose (MHPC) iyo ethers kale cellulose ayaa loo yaqaan. "Monosodium glutamate warshadaha" iyo heerka dhismaha ee MHEC ayaa si weyn loogu isticmaalay xabagta dhoobada, hoobiye qalalan, sibidhka iyo balastarrada gypsum iwm.

Baakad:

25kg bacaha warqadda gudaha oo leh bacaha PE.

20'FCL: 12Tan oo leh palletized, 13.5Tan oo aan lahayn palletized.

40'FCL: 24Ton oo leh palletized, 28Tan oo aan lahayn palletized.