Hydroxypropyl methyl cellulose
Te whakarite whakamatautau wa
Ko te wa whakatuu o te raima te nuinga e pa ana ki te wa waahi o te ciment, kaore he nui o te paanga o te kohinga, na reira ka taea te whakamahi i te waa o te kumete hei whakakapi mo te ako o te HPMC mo te waahi o te raima kore-marara i raro i te wai, ko te awe o te ranunga e tika ana ki te wa whakarite e te wai-ciment ōwehenga o te kumete, te kirikiri kirikiri pānga ōwehenga, na i roto i te tikanga ki te arotake i te ōwehenga o te wa o te moata-waatea o te HPMC me te tauwehenga o te wa mo te moata. me whakatika.
Ko te HPMC he hanganga raina macromolecule, me te roopu hydroxyl i runga i te roopu mahi, ka taea te hanga i nga here hauwai me nga ngota ngota wai whakaranu me te whakanui ake i te pokey o te wai whakaranu. HPMC mekameka rāpoi roa ka kukume tahi i te tahi, kia tuitui ngota ngota HPMC ki tahi i te tahi ki te hanga i te hanganga whatunga, te sima, ranu wai takai. Na te mea ka hangaia e te HPMC he hanganga whatunga e rite ana ki te kiriata angiangi me te paanga o te takai o te ciment, ka whai hua te aukati i te whakaetonga o te makuku i roto i te kumete, te aukati, te whakaroa ranei i te tere o te whakamakuku o te sima.
Te whakamatautau whakaheke wai
Ko te ahua o te wai-toto o te kumete he rite ki tera o te raima, ka nui te whakahiato o te whakataunga, ka piki ake te ōwehenga wai-ciment o te paparanga o runga o te slurry, a ka hanga i te paparanga o runga o te slurry he nui te whakaheke kirihou, ka pakaru ranei i te timatanga, a he ngoikore te kaha o te paparanga mata o te slurry. Mai i te whakamatautau, ka kitea ka eke te nui o te ranunga ki runga ake i te 0.5%, kaore he ahuatanga rerenga wai. Ko tenei na te mea kaHPMCkua konatunatua ki te kumete, kua HPMC hanga kiriata me te hanganga whatunga, me te adsorption o hydroxyl i runga i te mekameka roa o macromolecules, kia te sima i roto i te kumete me te ranu wai puka flocculation, ki te whakarite i te hanganga pūmau o te tinana moata. Whai muri i te taapiri i te HPMC ki te kumete, he maha nga mirumiru iti motuhake ka puta. Ka tohatohahia enei mirumiru ki roto i te kumete, ka aukati i te tukunga o te whakahiato. HPMC te mahi hangarau o ngā rauemi e hāngai ana sima he pānga nui, maha whakamahia ki te whakarite pērā i te kumete maroke, polymer kumete me ētahi atu rauemi hiato e hāngai ana sima hou, kia pai te pupuri wai, plasticity.
Te wa tuku: Apr-26-2024