Ni akọkọ, cellulose aise ohun elo igi ti ko nira/owu ti a ti tunṣe ti wa ni fifun pa, lẹhinna alkalized ati fifa labẹ iṣẹ ti omi onisuga caustic. Fi olefin oxide (gẹgẹbi ethylene oxide tabi propylene oxide) ati methyl kiloraidi fun etherification. Nikẹhin, fifọ omi ati isọdọmọ ni a ṣe lati gba funfun nikẹhinmethylcelluloselulú. Lulú yii, paapaa ojutu olomi rẹ, ni awọn ohun-ini ti ara ti o nifẹ. Ether cellulose ti a lo ninu ile-iṣẹ ikole jẹ methyl hydroxyethyl cellulose ether tabi methyl hydroxypropyl cellulose (ti a tọka si MHEC tabi MHPC, tabi orukọ ti o rọrun diẹ sii MC). Ọja yii ṣe ipa pataki pupọ ni aaye ti amọ lulú gbigbẹ. ipa pataki.
Kini idaduro omi ti methyl cellulose ether (MC)?
Idahun: Ipele ti idaduro omi jẹ ọkan ninu awọn itọkasi pataki lati wiwọn didara methyl cellulose ether, paapaa ni tinrin Layer ikole ti simenti-orisun ati gypsum-orisun amọ. Idaduro omi ti o ni ilọsiwaju le ṣe idiwọ lasan ti ipadanu agbara ati jijẹ ti o ṣẹlẹ nipasẹ gbigbe gbigbẹ pupọ ati aito hydration. Itọju omi ti o dara julọ ti methyl cellulose ether labẹ awọn ipo otutu ti o ga julọ jẹ ọkan ninu awọn itọkasi pataki lati ṣe iyatọ iṣẹ ti methyl cellulose ether. Labẹ awọn ipo deede, idaduro omi ti awọn ethers methyl cellulose ti o wọpọ julọ dinku pẹlu ilosoke ti iwọn otutu. Nigbati iwọn otutu ba dide si 40 ° C, idaduro omi ti awọn ethers methyl cellulose ti o wọpọ ti dinku pupọ, eyiti o ṣe pataki ni awọn agbegbe gbigbona ati gbigbẹ. Ati ikole tinrin-Layer ni ẹgbẹ oorun ni igba ooru yoo ni ipa to ṣe pataki. Sibẹsibẹ, ṣiṣe fun aini ti idaduro omi nipasẹ iwọn lilo giga yoo fa iki giga ti ohun elo nitori iwọn lilo giga, eyiti yoo fa airọrun si ikole.
Idaduro omi jẹ pataki pupọ lati mu ilana líle ti awọn eto gelling nkan ti o wa ni erupe ile. Labẹ iṣẹ ti ether cellulose, ọrinrin ti wa ni tu silẹ laiyara si ipele ipilẹ tabi afẹfẹ lori igba pipẹ, nitorinaa aridaju pe ohun elo simenti (simenti tabi gypsum) ni akoko pipẹ to lati ṣe ajọṣepọ pẹlu omi ati di lile.
Kini ipa ti methyl cellulose ether ni amọ lulú gbẹ?
Methyl hydroxyethyl cellulose ether (MHEC) ati methyl hydroxypropyl cellulose ether (HPMC) ni a tọka si bi methyl cellulose ether.
Ni aaye ti amọ lulú ti o gbẹ, methyl cellulose ether jẹ ohun elo ti o ṣe pataki ti a ṣe atunṣe fun amọ lulú gbigbẹ gẹgẹbi amọ-lile plastering, gypsum plastering, adhesive tile, putty, awọn ohun elo ti o ni ipele ti ara ẹni, amọ-amọ-amọ-ọpa, lẹ pọ ogiri ati ohun elo caulking. Ni orisirisi awọn amọ lulú gbigbẹ, methyl cellulose ether ni pato ṣe ipa ti idaduro omi ati sisanra.
Akoko ifiweranṣẹ: Jan-09-2023