Mitundu ya Methyl Cellulose Ether
A. Hydroxypropyl methylcellulose (HPMC) amapangidwa makamaka ndi thonje woyengedwa kwambiri ngati zopangira, zomwe zimapangidwira mwapadera pansi pamikhalidwe yamchere.
B. Hydroxyethyl methyl cellulose (HEMC), yopanda ionic cellulose ether, ndi ufa woyera, wopanda fungo komanso wosakoma.
C. Hydroxyethylcellulose (HEC) ndi yopanda ionic, yoyera m'mawonekedwe, yopanda fungo komanso yosakoma komanso yosavuta kuyenda.
Zomwe zili pamwambazi ndi ma ethers omwe si a ionic cellulose, ndi ma ionic cellulose ethers (monga carboxymethyl cellulose (CMC)).
Pa ntchito youma ufa matope, chifukwa ayoni mapadi (CMC) ndi wosakhazikika pamaso pa ayoni kashiamu, ndi kawirikawiri ntchito inorganic gelling kachitidwe ndi simenti ndi slaked laimu monga cementing zipangizo. M'malo ena ku China, ena mkati mwa khoma putties kukonzedwa ndi kusinthidwa wowuma monga chuma chachikulu simenti ndi Shuangfei ufa monga filler ntchito CMC monga thickener, koma chifukwa mankhwalawa sachedwa mildew ndipo si kugonjetsedwa ndi madzi, pang'onopang'ono kuthetsedwa. pa msika.
Pakali pano, ma etha omwe amagwiritsidwa ntchito kwambiri pa cellulose muzinthu zadothi zowuma zowuma amatchedwanso hydroxypropyl methylcellulose ether (HPMC) ndi hydroxyethyl methylcellulose ether (HEMC). Pazinthu zomwe zimagwiritsidwa ntchito mosiyanasiyana, mlingo wa cellulose ether ndi wosiyana, otsika ngati 0.02% monga matope a khoma mpaka 0.1%. Monga matope opaka pulasitala, okwera amatha kuchoka pa 0.3% mpaka 0.7% monga zomatira matailosi.
Makhalidwe a Cellulose Ether
❶ Cellulose ether imasunga bwino madzi mumatope. Ntchito yake yosungira madzi imatha kuteteza gawo lapansi kuti lisatenge madzi ochuluka mofulumira kwambiri ndikulepheretsa kutuluka kwa madzi, kuti zitsimikizidwe kuti madzi okwanira pamene simenti imakhala ndi madzi. Ikhoza kuteteza matope kuti asawume ndi kusweka chifukwa cha kutaya madzi mofulumira, kotero kuti matope amakhala ndi nthawi yochuluka yomanga.
Nthawi zambiri, kusungidwa kwa madzi a simenti slurry kumawonjezeka ndi kuchuluka kwa zomwe zili mu cellulose ether. Kuchuluka kwa kukhuthala kwa cellulose ether yowonjezeredwa, kumapangitsa kuti madzi asungidwe bwino.
❷ Kukhuthala kwa cellulose ether kumatha kuwongolera matope kuti akwaniritse kusasinthika kwabwino, kupititsa patsogolo mgwirizano wamatope, kukwaniritsa anti-sag effect, kupititsa patsogolo magwiridwe antchito, ndikuwonjezera kwambiri ntchito yomanga.
❸ Ma cellulose ether amatha kusintha kwambiri kukhathamiritsa kwamadzi kwa matope, kuwonetsetsa kuti matope amadzi amakhala ndi mgwirizano wabwino pamagawo osiyanasiyana.
❹ Cellulose ether imathandizira kwambiri mphamvu ya mgwirizano wa matope, ndipo imatha kutsimikizira nthawi yokwanira yamadzi kuti ithetse simenti ngakhale pamalo otentha kwambiri, motero kuonetsetsa kuti matopewo amalumikizana bwino.
Ntchito yogwiritsira ntchito cellulose ether
Zotengera simenti:
⑴, putty, ⑵, pulasitala matope, ⑶, pulasitala matope, ⑷, caulking agent, ⑸, pulasitala matope, ⑹, matope matope, ⑺, matope okongoletsera, ⑻, zomatira matailosi, ⑼, simenti yodziikira yokha, ⑽ ⑾, matope omangira, ⑿, matope okonza, ⒀, matope otsekemera otenthetsera, ⒁, EIFS matenthedwe omangira matope, ⒂, zinthu zosagwedera.
Zida zomangira zina:
⑴, matope osalowa madzi, ⑵, matope a zigawo ziwiri.
Ndi chitukuko cha matope osakaniza owuma, cellulose ether yakhala yofunika kwambiri ya simenti yosakaniza. Komabe, pali mitundu yambiri ndi mawonekedwe a cellulose ether, ndipo mtundu pakati pa magulu umasinthasintha. Mukamagwiritsa ntchito, muyenera kulabadira:
1. Makhalidwe ogwirira ntchito a matope osinthidwa amagwirizana kwambiri ndi kukula kwa viscosity ya cellulose ether. Ngakhale kuti mankhwala okhala ndi mamasukidwe apamwamba mwadzina amakhala ndi mamasukidwe apamwamba omaliza, chifukwa cha kusungunuka pang'onopang'ono, zimatenga nthawi yayitali kuti mupeze mamasukidwe omaliza; Komanso , The mapadi efa ndi coarser particles amatenga nthawi yaitali kuti apeze mamasukidwe akayendedwe komaliza, kotero mankhwala ndi kukhuthala apamwamba si bwino ntchito makhalidwe.
2. Chifukwa cha kuchepa kwa digiri ya polymerization ya cellulose ether zopangira, kukhuthala kwakukulu kwa cellulose ether kumakhala kochepa.
Nthawi yotumiza: Feb-02-2023