Ko tetahi o nga whakaurunga nui o te cellulose ether i roto i te moata paura maroke, he maha nga mahi a te hydroxypropyl methylcellulose i roto i te moata. Ko te mahi tino nui o te hydroxypropyl methylcellulose i roto i te kumete ciment ko te pupuri wai me te matotoru. I tua atu, na tana mahi tahi me te punaha ciment, ka taea hoki e ia te mahi awhina ki te whakauru i te hau, te aukati i te waahi, me te whakapai ake i te kaha o te here. pānga.
Ko te mahi tino nui o te hydroxypropyl methylcellulose i roto i te kumete ko te pupuri wai. Hei whakaurunga etera cellulose i roto i te kumete, ka taea te whakamahi i te hydroxypropyl methylcellulose i roto i nga hua moata katoa, na te mea ko te pupuri i te wai. I te nuinga o te korero, ko te pupuri wai o te hydroxypropyl methylcellulose e pa ana ki tona pokey, te tohu whakakapinga me te rahi o te matūriki.
Ko te Hydroxypropyl methylcellulose e whakamahia ana hei kaitao, a, ko te kaha o te whakamaaramatanga e pa ana ki te tohu o te whakakapinga, te rahi o te matūriki, te viscosity me te tohu o te whakarereketanga o te hydroxypropyl methylcellulose. I te nuinga o te korero, ko te teitei ake o te whakakapinga me te viscosity o te cellulose ether, me te iti o nga matūriki, ka tino kitea te paanga o te matotoru.
I roto i te hydroxypropyl methylcellulose, ko te whakaurunga o nga roopu methoxy ka whakaiti i te kaha o te mata o te wairewa wai kei roto te hydroxypropyl methylcellulose, na te hydroxypropyl methylcellulose he awe te hau ki te kumete ciment. Whakauruhia nga mirumiru hau tika i roto i te kumete, na te "paoro paoro" o nga mirumiru hau,
Ko te mahi hanga o te moata ka pai ake, i te wa ano, ko te whakauru o nga mirumiru hau ka piki ake te tere o te whakaputanga o te moata. Ko te tikanga, me whakahaere te nui o te hau-entrainment. Ko te nui o te whakauru o te hau ka pa kino ki te kaha o te moata.
Ko te Hydroxypropyl methylcellulose ka whakaroa i te tukanga whakatakoto o te ciment, na reira ka whakaroa i te whakatakoto me te whakamaroke o te sima, me te whakaroa i te wa whakatuwheratanga o te kumete, engari kaore tenei paanga e pai mo te kumete i nga rohe makariri.
Hei taonga polymer mekameka roa, ka taea e te hydroxypropyl methylcellulose te whakapai ake i te mahi honohono me te tïpako i muri i te taapiri ki te punaha ciment i raro i te kaupapa o te pupuri i te makuku i roto i te slurry.
Hei whakarāpopoto, ko te mahi oHPMCi roto i te kumete te nuinga ko: te pupuri wai, te matotoru, te whakaroa i te waa whakatuu, te whakauru i te hau me te whakapai ake i te kaha here tensile, etc.
Wā tuku: Tihema-19-2022