1. Lintho tse tala tsa cellulose ether
Cellulose ether bakeng sa kaho ke polima e qhibilihang ka metsing e seng ionic eo mohloli oa eona e leng:
Cellulose (matlapa a lehong kapa lesela la k'hothone), li-hydrocarbon tse halogenated (methane chloride, ethyl chloride kapa halide tse ling tse telele), metsoako ea epoxy (ethylene oxide, propylene oxide, joalo-joalo)
HPMC-Hydroxypropyl Methyl Cellulose Ether
HEC-Hydroxyethyl Cellulose Ether
HEMC-Hydroxyethyl Methyl Cellulose Ether
EHEC-Ethyl Hydroxyethyl Cellulose Ether
MC-methyl cellulose ether
2. Thepa ea cellulose ether
Thepa ea cellulose ether e itšetlehile ka:
Polymerization degree DP Palo ea likarolo tsa tsoekere-viscosity
Li-substitute le tekanyo ea tsona ea ho kenya sebaka, tekanyo ea ho lumellana ha sebaka -- khetholla sebaka sa kopo
Particle Size--Solubility
Phekolo ea bokaholimo (ke hore, ho lieha ho felisoa) - nako ea viscosity e amana le boleng ba pH ba sistimi.
Tekanyo ea ho fetola - Ntlafatsa ho hanyetsa le ho sebetsa ha cellulose ether.
3. Karolo ea cellulose ether - ho boloka metsi
Cellulose ether ke motsoako oa polymer chain o entsoeng ka yuniti ea β-D-glucose.Sehlopha sa hydroxyl ka molek'hule le athomo ea oksijene holim'a tlamo ea ether li etsa tlamo ea hydrogen le molek'hule ea metsi, e khahlang molek'hule ea metsi holim'a ketane ea polymer ebe e kopanya limolek'hule.Ka ketane, e lieha ho tsoa ha metsi 'me e monngoa ke lera la motheo.
Melemo e fanoang ke thepa ea ho boloka metsi ea cellulose ethers:
Ha ho hlokahale ho kolobisa lera la motheo, mokhoa oa ho boloka
kaho e ntle
matla a lekaneng
4. Karolo ea cellulose ether - phello e teteaneng
Cellulose ether e ka eketsa momahano pakeng tsa likarolo tsa seretse se thehiloeng ho gypsum, se bonahalang ka ho eketseha ha ho tsitsa ha seretse.
Melemo ea mantlha e fanoang ke ho tiea ha cellulose ethers ke:
Fokotsa molora oa fatše
Eketsa ho khomarela motheong
Fokotsa ho sisinyeha ha seretse
boloka seretse hantle
5. Karolo ea cellulose ether - mosebetsi oa holim'a metsi
Cellulose ether e na le lihlopha tsa hydrophilic (lihlopha tsa hydroxyl, li-ether bond) le lihlopha tsa hydrophobic (lihlopha tsa methyl, lihlopha tsa ethyl, mehele ea tsoekere) 'me ke sehlahisoa.
(Tension ea holim'a metsi ke 72mN/m, surfactant ke 30mN/m, le cellulose ether ke HPC 42, HPMC 50, MC 56, HEC 69, CMC 71mN/m)
Melemo ea mantlha e fanoang ke ts'ebetso ea bokaholimo ba cellulose ethers ke:
Matla a ho kenya moea (ho khoahla ha boreleli, metsi a tlase a mongobo, modulus e tlase ea elastic, ho hanyetsa ho qhibiliha ha leqhoa)
Ho kolobisa (ho eketsa ho khomarela ho substrate)
6. Litlhoko tsa gypsum e entsoeng ka leseli bakeng sa cellulose ether
(1).Ho boloka metsi hantle
(2).Ho sebetsa hantle, ha ho na ho pheha
(3).Batch scraping boreleli
(4).Anti-sagging e matla
(5).Mocheso oa gel o phahame ho feta 75°C
(6).Sekhahla sa ho qhibiliha ka potlako
(7).Ho molemo ho ba le bokhoni ba ho kenya moea le ho tsitsisa li-bubble tsa moea seretseng
11. Mokhoa oa ho tseba tekanyo ea cellulose ether
Bakeng sa li-plastering, hoa hlokahala ho boloka metsi a lekaneng ka seretse ka nako e telele e le hore ho be le ts'ebetso e ntle ea ho sebetsa le ho qoba mapetsong a holim'a metsi.Ka nako e ts'oanang, cellulose ether e boloka palo e loketseng ea metsi ka nako e telele ho etsa hore seretse se be le ts'ebetso e tsitsitseng ea coagulation.
Palo ea cellulose ether e itšetlehile ka:
Viscosity ea cellulose ether
Mokhoa oa tlhahiso ea cellulose ether
Likahare tsa Substituent le Kabo ea Cellulose Ether
Kabo ea boholo ba karolo ea cellulose Ether
Mefuta le sebopeho sa seretse se thehiloeng ho gypsum
Matla a ho monya metsi a lera la motheo
Tšebeliso ea Metsi bakeng sa Phallo e Tloaelehileng ea Seretse se Thehiloeng ka Gypsum
Ho beha nako ea seretse se thehiloeng ho gypsum
Botenya ba kaho le ts'ebetso ea kaho
Maemo a kaho (joalo ka mocheso, lebelo la moea, joalo-joalo)
Mokhoa oa kaho (ho phurula ka letsoho, ho fafatsa ka mochini)
Nako ea poso: Jan-18-2023