Ko te tauira cellulose ether he pūhui polymer i hangaia ki te cellulose me te hanganga ether.Kei ia mowhiti huka i roto i te macromolecule cellulose e toru nga roopu hydroxyl, ko te roopu hydroxyl tuatahi kei runga i te ngota waro tuaono, me te roopu hydroxyl tuarua kei te ngota waro tuarua me te tuatoru.Ko te hauwai kei roto i te roopu hydroxyl ka whakakapihia e te roopu hauwai hei hanga cellulose.Ko te hua o te whakakapinga o te hauwai hauwai ki te roopu warowaiwai ki te polymer cellulose.Ko te Cellulose he puhui polyhydroxy polymer e kore e rewa, e kore e rewa.Ka taea te rewa te cellulose i roto i te wai, te wairewa kawakore me te whakarewa pararopi i muri i te whakaetherification, a he taonga whakamaarama.
Ko te Ether Cellulose te kupu whanui o te raupapa o nga hua ka puta mai i te tauhohenga o te cellulose alkali me te kaihoko whakaetere i raro i etahi tikanga.Ko te cellulose alkali ka whakakapihia e nga momo etherifying agents ki te whiwhi i nga momo ethers cellulose.
E ai ki nga ahuatanga o te katote o nga mea whakakapi, ka taea te wehea te tauira cellulose ethers ki te katote (pēnei i te carboxymethyl cellulose) me te katote-kore (penei i te methyl cellulose) kia rua nga waahanga.
E ai ki te momo whakakapinga, ka taea te wehea te tauira cellulose ethers ki te etera kotahi (pēnei i te methyl cellulose) me te ether whakauru (pēnei i te hydroxypropyl methyl cellulose).E ai ki te wairewa, ka taea te wehea ki te wairewa wai (pērā i te hydroxyethyl cellulose) me te whakarewa wairewa (pēnei i te ethyl cellulose).Ko te moata whakauru maroke te nuinga o te whakamahi i te cellulose wairewa-wai, ka taea te wehewehe ki te momo tere-whakarewa me te momo whakaroa whakaroa i muri i te maimoatanga mata.
Ko te whakaurunga he mahi nui ki te whakapai ake i nga ahuatanga o te moata whakaranu maroke me te nui atu i te 40% o te utu rauemi i roto i te moata whakaranu maroke.Ko te waahanga nui o te whakaurunga i roto i te maakete o-whare ka tukuna e nga kaihanga o nga iwi ke, a ko te waahanga tohutoro o te hua ka tukuna ano e nga kaiwhakarato.Ko te mutunga mai, he nui tonu te utu mo nga hua moata whakaranu maroke, he uaua ki te whakanui i te moata masonry noa me te raima raima me te nui me te whanui whanui.Ko nga hua o te maakete teitei e whakahaerehia ana e nga kamupene kee, nga kaihanga moata maroke he iti nga hua, he iti te utu o te utu;Ko te whakamahinga o te whakaurunga karekau he rangahau nahanaha me te whai kiko, ka whai matapo i nga whakatakotoranga ke.
Ko te kaihoko pupuri wai te whakaurunga matua hei whakapai ake i te mahi pupuri wai o te kumete whakauru maroke me tetahi o nga whakaurunga matua hei whakatau i te utu rauemi mo te moata whakauru maroke.Ko te mahi matua o te cellulose ether ko te pupuri wai.
Ko te tikanga mahi o te cellulose ether i roto i te kumete e whai ake nei:
(1) kumete i roto i te cellulose etera rewa i roto i te wai, no te mea te mata mahi mātātoa ki te whakarite i te rauemi gelled tōtika tohatoha ōrite i roto i te pūnaha, me te cellulose etera rite te ahua o te colloid tiaki, "mōkī" matūriki totoka, a ki runga ki tona mata waho ki hanga he apa o te kiriata whakahinuhinu, te pūnaha slurry ake pūmau, me te whakapai ake hoki i te slurry i roto i te tukanga ranu o te wai me te hanga o te paheketanga kia tika rite te pai.
(2) Cellulose ether otinga e tika ana ki ona ake āhuatanga hanganga rāpoi, kia kore te wai i roto i te kumete he ngāwari ki te ngaro, me te āta tukua i roto i te wā roa o te wā, hoatu moata pai pupuri wai me te mahi.
Wā tuku: Tihema-14-2021