Te hydroxypropyl methyl cellulose i roto i te sima me te raima gypsum

HPMC Hydroxypropyl methyl celluloseI roto i te moata sima me te paru gypsum, ko te nuinga o te mahi he pupuri wai me te whakamātotoru, ka taea te whakapai ake i te piri me te ātete totoro o te paru.

Ka pā te pāmahana hau, te pāmahana me te tere o te pēhanga hau ki te tere mimiti o te wai i roto i ngā hua sima me te gypsum. Nō reira, i ngā wā rerekē, he rerekē te nui o te hua pupuri wai mā te tāpiri i te hydroxypropyl methyl cellulose. I roto i te hanganga raima, ka taea te whakarite i te hua pupuri wai o te paru mā te whakanui ake, te whakaiti rānei i te nui o te HPMC. Ko te pupuri wai o te methyl cellulose ether i te pāmahana teitei he tohu nui hei wehewehe i te kounga o te methyl cellulose ether.

Tino paihydroxypropyl methyl celluloseKa taea e ngā hua raupapa te whakaoti rapanga o te pupuri wai i raro i te pāmahana tiketike. I te wā pāmahana tiketike, inā koa i ngā wāhi wera me te maroke me te hanganga paparanga angiangi i te taha paki, me whakamahi HPMC kounga teitei hei whakapai ake i te pupuri wai o te paru; he tino pai te ōritetanga o te hydroxypropyl methyl cellulose (HPMC), he rite te tohatoha o ngā rōpū hāora me te hāora hydroxypropyl puta noa i te mekameka cellulose, ka taea te whakapai ake i te hydroxyl me te ether. Ko te hāora me te wai kei runga i te hononga matua o te hanganga hauwai, ka hanga wai kore utu, kia pai ai te whakahaere i te rangi wera e puta mai ana i te makuku kia mimiti. Ka tutuki te pupuri wai teitei.

Ka taea e te hydroxypropyl methyl cellulose kounga teitei te horapa ōrite me te whai hua ki roto i ngā hua moata sima me te raima, ka tākai i ngā matūriki totoka katoa, ka hanga he paparanga kiriata mākū, ka tukuna mārire te makuku i roto i te turanga mō te wā roa, ka tauhohe te waikura o ngā rauemi sima kore-waro, kia pai ai te kaha o te here me te kaha pēhi o ngā rauemi.

I roto i te hanganga, kia tutuki ai te pānga o te tiaki wai, me tāpiri te kounga teiteiHPMCkia rite ngā hua ki te tauira, ki te kore, ka tere rawa te maroke nā te korenga o te makuku, te ngoikore o te kaha, te pakaru, te pakaru o te pūwero me te whakahekenga o te kounga, engari ka piki ake hoki te uauatanga o te hanganga a ngā kaimahi. I te hekenga o te pāmahana, ka taea te whakaiti haere i te nui o te wai HPMC, ā, ka taea te whakatutuki i te pānga pupuri wai ōrite.