Mu matope owuma, cellulose ether ndi chowonjezera chachikulu chomwe chingathe kusintha kwambiri ntchito ya matope onyowa komanso kukhudza ntchito yomanga matope.Methyl cellulose ether imagwira ntchito yosunga madzi, kukulitsa, komanso kukonza ntchito yomanga.Kuchita bwino kosungirako madzi kumatsimikizira kuti matopewo sangapangitse mchenga, ufa ndi kuchepetsa mphamvu chifukwa cha kusowa kwa madzi ndi hydration yosakwanira simenti;Kulimbitsa mphamvu ya matope amadzimadzi akuwonjezeka kwambiri, ndipo kuwonjezera kwa methyl cellulose ether kumatha kusintha kwambiri kukhuthala kwamadzi amatope, ndipo kumamatira bwino kumagulu osiyanasiyana, potero kumapangitsa kuti matope amadzimadzi apangidwe pakhoma. ndi kuchepetsa zinyalala;kuonjezerapo, zosiyana Udindo wa cellulose muzogulitsa ndi wosiyana, mwachitsanzo: mapadi mu zomatira matayala amatha kuwonjezera nthawi yotsegulira ndikusintha nthawi;mapadi mu makina kupopera matope matope akhoza kusintha structural mphamvu ya chonyowa matope;pakudziyimira pawokha, cellulose imathandizira kupewa kukhazikika, Kupatulana komanso kusanja.
Kupanga kwa cellulose ether kumapangidwa makamaka ndi ulusi wachilengedwe kudzera kusungunuka kwa alkali, kulumikiza zomwe zimachitika (etherification), kutsuka, kuyanika, kugaya ndi njira zina.Zida zazikulu za ulusi wachilengedwe zitha kugawidwa mu: thonje CHIKWANGWANI, CHIKWANGWANI mkungudza, CHIKWANGWANI beech, etc. Mlingo wawo polymerization ndi osiyana, zomwe zidzakhudza kukhuthala komaliza kwa mankhwala awo.Pakadali pano, opanga ma cellulose akuluakulu amagwiritsa ntchito ulusi wa thonje (wopangidwa kuchokera ku nitrocellulose) ngati chinthu chachikulu.Ma cellulose ethers amatha kugawidwa kukhala ionic ndi non-ionic.Mtundu wa ionic makamaka umaphatikizapo mchere wa carboxymethyl cellulose, ndipo mtundu wosakhala wa ionic umaphatikizapo methyl cellulose, methyl hydroxyethyl (propyl) cellulose, ndi hydroxyethyl cellulose.Su ndi zina zotero.Mumatope owuma a ufa, chifukwa ionic cellulose (carboxymethyl cellulose salt) imakhala yosakhazikika pamaso pa ayoni a calcium, sagwiritsidwa ntchito kawirikawiri muzinthu za ufa wouma monga simenti ya slaked laimu ngati zipangizo za simenti.
Kusungidwa kwa madzi kwa cellulose kumagwirizananso ndi kutentha komwe kumagwiritsidwa ntchito.Kusungidwa kwa madzi kwa methyl cellulose ether kumachepa ndi kuwonjezeka kwa kutentha.Mwachitsanzo, m'chilimwe, pakakhala kuwala kwa dzuwa, khoma lakunja la putty limakutidwa, lomwe nthawi zambiri limathandizira kuchiritsa simenti ndi matope.Kuwumitsidwa ndi kuchepa kwa kuchuluka kwa kusungirako madzi kumabweretsa kumverera koonekeratu kuti zonse zomanga ndi ntchito zotsutsana ndi ming'alu zimakhudzidwa.Pankhaniyi, ndikofunikira kwambiri kuchepetsa mphamvu ya kutentha.Nthawi zina sichingakwaniritse zosowa zogwiritsa ntchito.Mankhwala ena amachitidwa pa cellulose, monga kuonjezera mlingo wa etherification, ndi zina zotero, kotero kuti madzi osungira madzi amatha kukhalabe ndi zotsatira zabwino pa kutentha kwakukulu.
Kusunga madzi a cellulose: Zinthu zazikulu zomwe zimakhudza kusungidwa kwa madzi mumatope ndi monga kuchuluka kwa cellulose yomwe imawonjezeredwa, kukhuthala kwa cellulose, kuyanika kwa cellulose, komanso kutentha kwa malo ogwirira ntchito.
Kukhuthala kwa cellulose: Nthawi zambiri, kukhathamira kwamphamvu kumapangitsa kuti madzi asamasungidwe bwino, koma kukhuthala kwake kumapangitsa kuti cellulose ikhale yolemera kwambiri, komanso kutsika kofananira ndi kusungunuka kwake, komwe kumawononga ntchito yomanga. ndi mphamvu ya matope .The apamwamba mamasukidwe akayendedwe, ndi zoonekeratu kwambiri thickening zotsatira pa matope, koma si mwachindunji molingana.Kukwezeka kwa viscosity, m'pamenenso matope onyowa amawonekera kwambiri.Pakumanga, imamatira ku scraper ndikukhala ndi kumatira kwakukulu ku gawo lapansi, koma sizingathandize kwambiri kuwonjezera mphamvu zamapangidwe a dothi lonyowa palokha, ndipo ntchito yotsutsa-sag sidzaonekera pomanga.
Ubwino wa cellulose: Ubwino wake umakhudza kusungunuka kwa cellulose ether.Coarse cellulose nthawi zambiri amakhala granular ndipo amamwazikana mosavuta m'madzi popanda kuphatikizika, koma kusungunuka kumakhala pang'onopang'ono.Sikoyenera kugwiritsidwa ntchito mumatope owuma a ufa.Kupangidwa m'nyumba Ena mwa mapadi ndi flocculent, si zophweka kumwazikana ndi kupasuka m'madzi, ndipo n'zosavuta agglomerate.Pokhapokha ufa wokwanira ungapewe methyl cellulose ether agglomeration powonjezera madzi ndi kusonkhezera.Koma wokhuthala wa cellulose ether sikuti amangowononga komanso amachepetsa mphamvu yakumaloko ya matope.Mtondo wouma woterewu ukapangidwa m'dera lalikulu, liwiro la kuchiritsa kwa matope am'deralo mwachiwonekere limachepetsedwa, ndipo ming'alu chifukwa cha nthawi zosiyanasiyana zamachiritso imawonekera.Chifukwa cha nthawi yochepa yosakanikirana, matope okhala ndi makina opangira makina amafunika kuwongolera bwino.
Nthawi yotumiza: Feb-13-2023