Waa maxay hydroxyethyl methyl cellulose (HEMC)?
Hydroxyethyl methylcellulose(HEMCWaxa kale oo loo yaqaan methylhydroxyethyl cellulose (MHEC).Waa qayb cad oo cad, cawlan ama jaalle ah.Waa eter cellulose ah oo aan ionic ahayn oo la helay iyadoo lagu daray ethylene oxide methyl cellulose.Waxay ka samaysan tahay polymers dabiici ah oo la cusboonaysiin karo sida saxarka alwaax ama suufka, iyo HEMC waxaa loo isticmaali karaa sidii wax ku oolnimada sare ee wakiilka biyaha, koollada iyo wakiilka samaynta filimada, stabilizer, iwm Waxaa si ballaaran loo isticmaalaa codsiyada warshadaha kala duwan, sida saliidda. qodista, dhismaha iyo dhismaha, rinjiga iyo dahaarka, dawooyinka, iwm.HEMCwaxaa lagu beddeli karaa iyadoo loo eegayo shuruudaha macaamiisha, iyo ka dib markii wax laga beddelo, waxa ay weli leedahay iska caabin wanaagsan ee sagging iyo habaysan wanaagsan.Ma rabtaa in aad isticmaashoHEMCujeeddooyin warshadeed?Fadlan la xidhiidh alaab-qeybiye lagu kalsoon yahayhydroxyethyl methyl cellulosesi loo helo macaamil ganacsi oo wanaagsan.
HEMCwuxuu leeyahay hawlo kala duwan.Waxaa ka mid ah:
1. Muuqashada
HEMCwuxuu noqon karaa caddaan, jaale khafiif ah, caddaan jaalle ah, ama caddaan cawl ah.
2. Solubility
HEMCwaa ku milmay biyaha (qabow ama kulul).InkastooHEMCwaa mid aan lagu milmi karin inta badan dareerayaasha organic, waxay ku milmi kartaa dareeraha organic binary iyo hababka biyaha dareeraha organic.
Xoog saaristeeda sare waxay ku xidhan tahay muuqalka, milmayntiisuna way ku kala duwan tahay mawqifka.The hoose viscosity, ka weyn ee milanka, iyo lid ku ah.
3. Xasiloonida pH
HEMCwuu xasiloon yahay inta u dhaxaysa 3.0-11.0 iyo viscosity-kiisuna waa ku dhawaad wax saamayn ah kuma yeelan, laakiin haddii xadkan la dhaafo waxay yaraynaysaa mawqifkiisa.
4. dheef-shiid kiimikaad
HEMCwaa walax aan firfircooneyn oo si weyn loogu isticmaalo cuntada iyo daawada sababtoo ah awood la'aanta in ay maro dheef-shiid kiimikaad.
5. Dhaqdhaqaaqa dusha sare
Sababtoo ah shaqada firfircoon ee dusha sare ee xalalka aqueous, waxaa loo isticmaali karaa kala firdhiye, ilaaliye, iyo emulsifier.
6. caabbinta fungus
Kaydinta muddada-dheer,HEMCwaxay leedahay xasillooni viscosity wanaagsan, sidaas darteed waxay leedahay caabbinta caaryada wanaagsan.
Awoodeeda ka hortagga caaryada way ka sarraysaa ta hydroxyethyl cellulose.
7. Haysashada biyaha
HEMCnoqda wakiilka biyaha-haynta wax ku ool ah sababtoo ah viscosity sare ee xalalka aqueous.
Awoodeeda xajinta biyaha ayaa ka weyn tan methyl cellulose.
8. Dambaska ku jira
Habka diyaarinta eeHEMCwaxay isticmaashaa dhaqidda biyaha kulul, taasoo keentay in maadada dambaska ay aad u yar tahay.
9. Xabagta kulaylka leh
MarkaHEMCXalka waxaa lagu kululeeyaa heerkul gaar ah, daah-furnaantiisa ayaa hoos u dhacda, sameynta sediment iyo jel, laakiin haddii la qaboojiyo, waxay ku soo noqon doontaa xaaladdii asalka ahayd ee xalka.
Isticmaalka caadiga ah eeHEMC
Hydroxyethylmethylcellulosewaxaa loo isticmaali karaa sida:
Ø AdhesiveØ ColloidØ ThickenerØ Kahortagga Filimka
Codsiyada warshadaha eeHEMC
HEMCwaxaa si weyn looga isticmaalaa warshadaha soo socda:
Isku-dhafka ·Beeramka ·Waxyaabaha la isku qurxiyo ·Dhismaha ·Cuntada iyo Cabitaanka
Sidii hore loo sheegay.hydroxyethyl methylcellulose (HEMC) waa nooc ka mid ah methylcellulose.Waa eter cellulose aan ionic ahayn oo laga sameeyay alaabta suufka ah ee saafiga ah.HEMCHaysashada biyaha iyo dhumucdooda ayaa ka dhigaysa mid ku habboon rinjiyada cinjirka ah ee biyaha ku salaysan, khadadka iyo qodista batroolka, qalabka dhismaha, iwm. Sababo la xiriira isticmaalka baahsan ee codsiyada kala duwan, helitaankaHEMCalaab-qeybiyeyaasha caanka ah ee hydroxyethyl methyl cellulose waxay hubin karaan inaad hesho alaab ku habboon isticmaalka shakhsi ahaaneed ama warshadaha.
Waqtiga boostada: Agoosto-28-2023