Cellulose ether waa polymer a non-ionic semi-synthetic, biyo-milmi iyo dareere laba, in warshadaha kala duwan oo ay sababto doorka waa ka duwan yahay, sida in qalabka dhismaha kiimikada, waxa uu leeyahay saamaynta soo socota:
① wakiilka biyaha, ② wakiilka dhumuc, ③ simay, ④ samaynta filim, ⑤ xidhe
In warshadaha PVC
waa emulsifier, kala firdhisa;
In warshadaha excipient dawooyinka
waa nooc ka mid ah xirmooyinka iyo walxaha qalfoofka ah ee si tartiib ah loo sii daayo, sababtoo ah ether cellulose waxay leedahay saameyno kala duwan oo isku dhafan, sidaas darteed waa goobta ugu isticmaalka badan.Hoos waxaan diiradda saarayaa isticmaalka etherka cellulose ee qalabka dhismaha ee kala duwan iyo doorka.
In rinjiga cinjirka
In line rinjiga cinjirka ah, si ay u doortaan hydroxyethyl cellulose, qeexidda guud ee viscosity siman yahay 3000-50000cps, waxa ay u dhigantaa HBR250 sifooyin, qiyaasta tixraaca guud ahaan waa 1.5‰-2‰.Doorka ugu weyn ee cellulose hydroxyethyl ee rinjiga cinjirka ah waa in ay dhumucdiisuna, ka hortagga gelation midabka, gacan ka kala firidhsan ee midabka, cinjirka, xasiloonida, iyo hagaajin kartaa viscosity ee qaybaha, gacan ka si siman waxqabadka dhismaha: Hydroxyethyl cellulose waa fududahay in la isticmaalo. , Labada qabow iyo biyaha kululba waa la milmi karaa, mana saameeyaan qiimaha PH.Waxaa si badbaado leh loo isticmaali karaa inta u dhaxaysa qiimaha PI 2 iyo 12. Hababka adeegsigu waa sida soo socota:
I. Ku dar si toos ah wax soo saarka
Habkan, waa in la doortaa hydroxyethyl cellulose oo daahsan oo leh wakhti ka badan 30 daqiiqo.Nidaamku waa sida soo socota: (1) si loo helo sare waa in la gooyaa weelka blender tirada biyaha saafiga ah (2) xoogga gudaha ee dadku waxay bilaabeen isku darka xawaare hooseeya, lebbiska hydroxyethyl si tartiib ah isku mar si ay ugu biiraan xalka (3) sii wad inaad walaaqdo ilaa dhammaan walxaha qoyan ee qoyan (4) si aad ugu biirto waxyaabaha kale ee lagu daro iyo waxyaabaha alkaline-ka ah (5) walaaq ilaa ay si buuxda u milmaan dhammaan hydroxyethyl, ku dar qaybaha kale ee caanaha, adigoo shiidaya alaabta la dhammeeyey.
2, oo lagu rakibay khamriga hooyada
Habkani wuxuu dooran karaa dhakhso - cellulose milmaya, oo leh caariyaysi - saameyn caddayn ah.Faa'iidada habkan waa in la yeesho dabacsanaan weyn, si toos ah ugu biiri kara emulsioni rinjiga, samee habka waa isku mid sida ①-④ tallaabo waa isku mid.
3, oo leh boorash la isticmaalo
Maadaama dareerayaasha organic ay yihiin dareerayaal liidata (aan milmi karin) hydroxyethyl, waxaa loo isticmaali karaa in lagu diyaariyo boorash.Walxaha ugu badan ee la isticmaalo waa dareerayaasha dabiiciga ah ee ku jira qaababka rinjiga cinjirka ah, sida ethylene glycol, propylene glycol iyo wakiilada filim sameynta (sida diethylene glycol butyl acetate), boorashka hydroxyethyl cellulose si toos ah ayaa loogu dari karaa rinjiga, ka dib marka lagu daro. sii wad inaad walaaqdo ilaa si buuxda u milmo.
In suufka gidaarka xoqan
Waqtigan xaadirka ah, Shiinaha ayaa inta badan iska caabbinta biyaha magaalada, iska caabinta suufka ilaalinta deegaanka putty ayaa asal ahaan si dhab ah u qaatay dadka, dhowr sano ka hor, sababtoo ah maaddada ka samaysan xabagta dhismaha waxay soo saartaa gaaska formaldehyde waxyeelada caafimaadka dadka, dhismaha xabagta ayaa ka samaysan alkolada polyvinyl iyo falcelinta acetal formaldehyde.Sidaa daraadeed maaddadan si tartiib tartiib ah ayey u baabi'isaa dadka, beddelka maaddadan waa cellulose ether taxane ah oo alaab ah, taas oo ah in la yiraahdo, horumarinta qalabka dhismaha ilaalinta deegaanka, cellulose waa nooca kaliya ee alaabta hadda.
Biyaha iska caabbinta waxaa loo qaybiyaa laba nooc oo budo ah oo qallalan iyo dhejis laba nooc ah, labadan nooc ee putty guud ahaan waxay doortaan methyl cellulose iyo hydroxypropyl methyl laba nooc, qeexida viscosity guud ahaan waa 40,000-75000cps inta u dhaxaysa kuwa ugu habboon, doorka ugu muhiimsan ee cellulose In putty waa haynta biyaha, isku xidhka, saliidaynta iyo saamaynta kale.
Sababtoo ah caanaha naaska ee soo saaraha kastaa maaha mid isku mid ah, qaar waa calcium cawl, kalsiyum fudud, sibidh cad, qaar waa budada gypsum, kalsiyum cawl, kalsiyum fudud, iwm. isku mid maaha, tirada guud ee wax lagu daro waa 2‰-3‰ ama wax ka badan.
Waqtiga boostada: Dec-10-2021