Ko te matotoru he tawhā nui o te mahi a te cellulose ether.
I te nuinga o te wā, ko te teitei ake o te matotoru, ko te pai ake o te pānga pupuri wai o te moata gypsum. Heoi, ko te teitei ake o te matotoru, ko te teitei ake o te taumaha ngota o te cellulose ether, ā, ko te hekenga o tōna wairewa ka pā kino ki te kaha me te mahi hanga o te moata. Ko te teitei ake o te matotoru, ko te kitea ake o te pānga matotoru ki te moata, engari kāore i te ōrite tika.
Ka nui ake te matotoru, ka nui ake te matotoru o te moata mākū. I te wā hanga, ka kitea ko te piri ki te waru me te piri nui ki te papa. Engari kāore e tino āwhina ki te whakanui ake i te kaha hanganga o te moata mākū tonu. Hei tāpiri, i te wā hanga, kāore i te kitea te mahi ārai-totoka o te moata mākū. Engari, ko ētahi matotoru reo me te iti engari he methyl cellulose ethers kua whakarerekētia he mahi tino pai ki te whakapai ake i te kaha hanganga o te moata mākū.
He hanganga pūwero te nuinga o ngā rauemi pakitara hanga, ā, he kaha te mimiti wai i roto i ēnei rauemi katoa. Heoi, ko te rauemi hanga gypsum e whakamahia ana mō te hanganga pakitara ka whakaritea mā te tāpiri wai ki te pakitara, ā, ka ngawari te mimiti o te wai e te pakitara, ka kore he wai e tika ana mō te whakamakuku o te gypsum, ka uaua te hanga parai me te heke o te kaha o te hononga, ka pakaru, ka raru te kounga pērā i te poka me te kiri. Mā te whakapai ake i te pupuri wai o ngā rauemi hanga gypsum ka taea te whakapai ake i te kounga hanga me te kaha piri ki te pakitara. Nō reira, kua noho te kaihopu wai hei tetahi o ngā ranunga nui o ngā rauemi hanga gypsum.
Ka whakamahia te gypsum parai, te gypsum piri, te gypsum whakapiri, te gypsum putty me ētahi atu rauemi paura hanga. Hei whakahaere i te hanga, ka tāpirihia ngā aukati gypsum i te wā hanga hei whakaroa i te wā hanga o te paru gypsum. Nā te mea kua konatunatua te gypsum ki te Retarder, e aukati ana i te tukanga whakamakuku o te gypsum hemihydrate. Me waiho tēnei momo paru gypsum ki te pakitara mō te 1~2H i mua i te whakatō. He maha ngā āhuatanga mimiti wai o ngā pakitara, inā koa ngā pakitara pereki me te raima hau. He pakitara, he papa whakamahana porowhita me ētahi atu rauemi pakitara hou mama, nō reira me whakahaere te maimoatanga pupuri wai ki runga i te paru gypsum kia kore ai e neke tetahi wāhanga o te wai i roto i te paru ki te pakitara, ka hua ake he kore wai me te whakamakuku kore i te wā e whakapakeketia ana te paru gypsum. Ka puta te wehenga me te tihore o te hononga i waenga i te gypsum me te mata o te pakitara. Ko te tāpiri i te kaihoko pupuri wai hei pupuri i te makuku kei roto i te paru gypsum, hei whakarite i te tauhohenga whakamakuku o te paru gypsum i te atanga, kia whakarite ai i te kaha o te here. Ko ngā mea e whakamahia whānuitia ana ko ngā cellulose ethers, pērā i te methyl cellulose (MC), te hydroxypropyl methyl cellulose (HPMC), te hydroxyethyl methyl cellulose (HEMC), me ētahi atu. Hei tāpiri, ka taea hoki te whakamahi i te waipiro polyvinyl, te konutai alginate, te māngaro whakarerekētia, te oneone diatomaceous, te paura oneone onge, me ētahi atu hei whakapai ake i te mahi pupuri wai.
Ahakoa te momo kaiāwhina pupuri wai ka taea te whakaroa i te tere o te makuku o te gypsum ki ngā taumata rerekē, ina kore e rerekē te horopeta o te aukati, ka taea e te kaiāwhina pupuri wai te whakaroa i te tautuhinga mō te 15-30 meneti. Nō reira, ka taea te whakaiti i te nui o te aukati.
Wā tuku: Hui-tanguru-08-2023