1. Maaddada ceeriin ee cellulose ether
Cellulose ether ee dhismaha waa polymer aan biyo-milmi karin oo aan ionic ahayn oo isha uu ka yimaado:
Cellulose (saxarada alwaaxa ama suufka), hydrocarbons-ka halogenated (methane chloride, ethyl chloride ama halides kale oo silsilad dheer leh), isku-dhafka epoxy (ethylene oxide, propylene oxide, iwm.)
HPMC-Hydroxypropyl Methyl Cellulose Ether
HEC-Hydroxyethyl Cellulose Ether
HEMC-Hydroxyethyl Methyl Cellulose Ether
EHEC-Ethyl Hydroxyethyl Cellulose Ether
Cellulose MC-methyl ether
2. Sifooyinka ether-ka cellulose-ka
Sifooyinka ether-ka cellulose waxay ku xiran yihiin:
Shahaadada Polymerization DP Tirada unugyada gulukooska - viscosity
Beddelayaasha iyo heerka beddelka, heerka isku midka ah ee beddelka —- go'aamiya goobta codsiga
Cabbirka Walxaha—-Milmi kara
Daawaynta dusha sare (tusaale ahaan kala dirista dib loo dhigay)—- waqtiga viscosity-gu wuxuu la xiriiraa qiimaha pH ee nidaamka
Heerka wax ka beddelka—- Hagaajinta iska caabbinta dheecaanka iyo shaqada ee ether-ka cellulose.
3. Doorka cellulose ether - haynta biyaha
Cellulose ether waa isku-xidh silsilad polymer ah oo ka kooban cutubyo β-D-glucose ah. Kooxda hydroxyl ee ku jirta molecule-ka iyo atamka oksijiinta ee ku jira xidhmada ether-ku waxay sameeyaan isku xidh haydarojiin ah oo leh molecule-ka biyaha, kaas oo nuuga molecule-ka biyaha ee dusha sare ee silsiladda polymer-ka isla markaana ku xidha molecules-ka. Silsiladda, waxay dib u dhigtaa uumi-baxa biyaha waxaana nuuga lakabka salka.
Faa'iidooyinka ay bixiyaan sifooyinka haynta biyaha ee ether-ka cellulose:
Looma baahna in la qoyso lakabka salka, habka badbaadinta
dhismo wanaagsan
xoog ku filan
4. Doorka cellulose ether - saamaynta dhumucda
Cellulose ether waxay kordhin kartaa isku xirnaanta ka dhaxaysa qaybaha hoobiyaha ku salaysan gypsum, taas oo ka muuqata kororka isku dheelitirka hoobiyaha.
Faa'iidooyinka ugu muhiimsan ee ay bixiso dhumucda ether-ka cellulose waa:
Yaree dambaska dhulka lagu shubay
Kordhi dhegta salka
Yaree dhogorta hoobiyaha
hoobiyaha si siman u ilaali
5. Doorka ether-ka cellulose - dhaqdhaqaaqa dusha sare
Cellulose ether wuxuu ka kooban yahay kooxo hydrophilic ah (kooxaha hydroxyl, bonds ether) iyo kooxo hydrophobic ah (kooxaha methyl, kooxaha ethyl, giraanta gulukooska) waana surfactant.
(Dhibaatada dusha sare ee biyuhu waa 72mN/m, surfactant-ku waa 30mN/m, cellulose ether-kuna waa HPC 42, HPMC 50, MC 56, HEC 69, CMC 71mN/m)
Faa'iidooyinka ugu muhiimsan ee ay bixiso dhaqdhaqaaqa dusha sare ee ether-ka cellulose waa:
Saamaynta gelitaanka hawada (xoqid siman, cufnaan qoyan oo hooseeya, modulus dabacsan oo hooseeya, iska caabin barafaysan iyo dhalaalid)
Qoynta (waxay kordhisaa dhegdhegga substrate-ka)
6. Shuruudaha gypsum-ka laastikada fudud ee cellulose ether
(1). Haysashada biyaha oo wanaagsan
(2). Si fiican u shaqayn kara, ma jiro wax la isku qurxiyo
(3). Si siman u xoqidda dufcadda
(4). Xoog badan oo ka hortagga hoos u dhaca
(5). Heerkulka jelku wuxuu ka sarreeyaa 75°C
(6). Heerka kala dirida degdegga ah
(7). Waxaa ugu wanaagsan inaad awood u yeelato inaad hawo geliso oo aad xasiliso xumbo hawo ah oo ku jira hoobiyaha.
11. Sida loo go'aamiyo qiyaasta ether-ka cellulose-ka
Si loo sameeyo balaastikada, waxaa lagama maarmaan ah in biyo ku filan lagu hayo matoorka muddo dheer si loo helo awood shaqo oo wanaagsan iyo in laga fogaado dildilaaca dusha sare. Isla mar ahaantaana, cellulose ether waxay haysaa biyo ku habboon muddo dheer si matoorku u yeesho hab xinjireed deggan.
Qadarka ether-ka cellulose wuxuu ku xiran yahay:
Viscosity of cellulose ether
Habka wax soo saarka ee cellulose ether
Qaybinta iyo Qaybinta Cellulose Ether ee Beddelka ah
Qaybinta Cabbirka Walxaha ee Cellulose Ether
Noocyada iyo halabuurka hoobiyaha ku salaysan gypsum
Awoodda nuugista biyaha ee lakabka salka
Isticmaalka Biyaha ee Faafinta Caadiga ah ee Madaafiicda Ku Salaysan Gypsum
Waqtiga dejinta hoobiyaha ku salaysan gypsum
Dhumucda dhismaha iyo waxqabadka dhismaha
Xaaladaha dhismaha (sida heerkulka, xawaaraha dabaysha, iwm.)
Habka dhismaha (xoqidda gacanta, buufinta farsamada)
Waqtiga boostada: Jan-18-2023