1. Zopangira za cellulose ether
Cellulose ether yomanga ndi polima yosasungunuka m'madzi yomwe gwero lake ndi:
Selulosi (zamkati zamatabwa kapena thonje linter), halogenated hydrocarbons (methane kloride, ethyl chloride kapena halides zina zazitali), epoxy compounds (ethylene oxide, propylene oxide, etc.)
HPMC-Hydroxypropyl Methyl Cellulose Ether
HEC-Hydroxyethyl Cellulose Ether
HEMC-Hydroxyethyl Methyl Cellulose Ether
EHEC-Ethyl Hydroxyethyl Cellulose Ether
MC-methyl cellulose ether
2. Makhalidwe a cellulose ether
Makhalidwe a cellulose ethers amadalira:
Digiri ya Polymerization DP Chiwerengero cha mayunitsi a shuga - kukhuthala
Olowa m'malo ndi digiri yawo yolowa m'malo, kuchuluka kwa kufanana kwa kulowetsa m'malo -- dziwani gawo la ntchito
Tinthu Kukula—-Kusungunuka
Chithandizo chapamtunda (ie kuchedwa kutha) --nthawi yamaviscosity imakhudzana ndi mtengo wa pH wa dongosolo
Digiri yosinthira--Kupititsa patsogolo kukana komanso kugwira ntchito kwa cellulose ether.
3. Udindo wa cellulose ether - kusunga madzi
Cellulose ether ndi gulu la polima lopangidwa ndi mayunitsi a β-D-glucose. Gulu la hydroxyl mu molekyulu ndi atomu ya okosijeni pa chomangira cha ether chimapanga mgwirizano wa haidrojeni ndi molekyulu yamadzi, yomwe imatulutsa molekyulu yamadzi pamwamba pa unyolo wa polima ndikumangirira mamolekyu. Mu unyolo, imachedwetsa kutuluka kwa madzi ndipo imatengedwa ndi gawo loyambira.
Ubwino woperekedwa ndi mphamvu yosungira madzi ya cellulose ethers:
Palibe chifukwa kunyowetsa m'munsi wosanjikiza, kupulumutsa ndondomeko
kumanga kwabwino
mphamvu zokwanira
4. Udindo wa cellulose ether - thickening kwenikweni
Cellulose ether ikhoza kuonjezera mgwirizano pakati pa zigawo za matope opangidwa ndi gypsum, zomwe zimawonekera pakuwonjezeka kwa matope.
Ubwino waukulu woperekedwa ndi makulidwe a cellulose ethers ndi awa:
Chepetsani phulusa la pansi
Wonjezerani kumamatira ku maziko
Chepetsani kugwa kwa matope
sunga matope mofanana
5. Udindo wa cellulose ether - ntchito yapamwamba
Ma cellulose ether ali ndi magulu a hydrophilic (magulu a hydroxyl, ether bond) ndi magulu a hydrophobic (magulu a methyl, magulu a ethyl, mphete za glucose) ndipo amapangidwa ndi surfactant.
(Kuthamanga kwamadzi ndi 72mN/m, surfactant ndi 30mN/m, ndi cellulose ether ndi HPC 42, HPMC 50, MC 56, HEC 69, CMC 71mN/m)
Ubwino waukulu woperekedwa ndi ntchito yapamwamba ya cellulose ethers ndi:
Air-entraining zotsatira (kukanda mosalala, kachulukidwe kakang'ono konyowa, modulus yotsika, kukana kuzizira)
Kunyowetsa (kuwonjezera kumamatira ku gawo lapansi)
6. Zofunika za kuwala pulasitala gypsum pa cellulose ether
(1). Kusunga madzi bwino
(2). Kugwira ntchito bwino, popanda kusokoneza
(3). Batch kukwapula kosalala
(4). Wamphamvu anti-sagging
(5). Kutentha kwa gel ndipamwamba kuposa 75 ° C
(6). Kuthamanga kwachangu
(7). Ndi bwino kukhala ndi luso lolowetsa mpweya ndi kukhazikika kwa thovu la mpweya mumatope
11. Momwe mungadziwire mlingo wa cellulose ether
Popaka pulasitala, m'pofunika kusunga madzi okwanira mumatope kwa nthawi yaitali kuti athe kugwira ntchito bwino komanso kupewa ming'alu ya pamwamba. Pa nthawi yomweyi, ether ya cellulose imakhalabe ndi madzi okwanira kwa nthawi yaitali kuti matope akhale ndi ndondomeko yokhazikika ya coagulation.
Kuchuluka kwa cellulose ether kumatengera:
Kukhuthala kwa cellulose ether
Njira yopangira cellulose ether
Zomwe zili m'malo ndi Kugawa kwa Cellulose Ether
Particle Kukula Kugawa kwa Cellulose Ether
Mitundu ndi kapangidwe ka matope opangidwa ndi gypsum
Kuthekera kwa mayamwidwe amadzi a gawo loyambira
Kugwiritsa Ntchito Madzi kwa Standard Diffusion ya Gypsum-Based Mortar
Kukhazikitsa nthawi ya matope opangidwa ndi gypsum
Kumanga makulidwe ndi ntchito yomanga
Zomangamanga (monga kutentha, liwiro la mphepo, ndi zina zotero)
Njira yomanga (kukwapula pamanja, kupopera mbewu pamakina)
Nthawi yotumiza: Jan-18-2023