Te painga o te hydroxypropyl methylcellulose ki runga i nga ahuatanga o nga rawa raima!

Ko te Hydroxypropyl methylcellulose (HPMC) he pai rawa nga ahuatanga o te matotoru, ka taea te whakamahi hei anti-dispersant pai mo te raima.I nga wa o mua, he hua matū tenei rauemi he iti noa te tuku ki Haina, he nui te utu.Na te maha o nga take, ko tona whakamahinga i roto i te Ko te tono i roto i te umanga hangahanga o taku whenua, i nga tau kua pahure ake nei, me te whakawhanake tonu o te hangarau whakamaarama taiepa o waho, te kore o te ahunga whakamua i roto i te hangarau hanga cellulose, me nga ahuatanga pai o te tumuaki HPMC me te paanga, HPMC kua whakamahia whānuitia i roto i te ahumahi hanga.

Kotahi: Whakamātautau anti-dispersion:

Ko te aukati marara he tohu hangarau nui hei ine i te kounga o te wehenga.Ko te HPMC he pūhui polymer wairewa-wai, e mohiotia ana ano he kapia wairewa-wai, he polymer wairewa-wai ranei.Ka whakanui ake i te whakaritenga ranunga ma te whakanui ake i te pokey ki te wai.He kaupapa-Wai-wai ka taea te memeha i roto i te wai ki te hanga otinga, marara ranei.Ko nga whakamatautau e whakaatu ana ka piki ake te nui o nga whakaheke wai-nui-a-te-naphthalene, ko te taapiri o nga whakaheke wai ka whakaiti i te aukati marara o te raima hou kua konatunatua.Ko tenei na te mea ko te whakaheke wai kaha-nui-a-naphthalene he surfactant.I te wa e whakauruhia ai te whakaheke wai ki te kumete, ka anga te whakaheke wai ki runga i te mata o nga matūriki ciment kia rite ai te utu o te mata o nga matūriki ciment.Ko tenei whakakorenga hiko e hanga ana i nga matūriki ciment Ka whakakorehia te hanganga flocculation i hangaia, ka tukuna te wai kei roto i te hanganga, ka mate te waahanga o te ciment.I te wa ano, ka kitea na te pikinga o te ihirangi HPMC, kei te pai haere te aukati marara o te kumete ciment hou i konatunatua.

E rua: nga ahuatanga kaha o te raima:

(1) Ko te taapiri o te hydroxypropyl methylcellulose he tino puhoi te paanga ki te ranunga moata.Na te pikinga o te nui o te HPMC, ka whakaroa haere te wa whakaroa o te moata.I raro i te nui o te HPMC, te whakakikorua i raro i te wai Ko te wa tautuhi o te moata i roto i te rangi he roa ake i tera i te rangi, he painga ki te pupuhi o te raima wai.

(2) Ko te kumete ciment hou i konatunatua ki te hydroxypropyl methylcellulose he pai nga ahuatanga whakakotahi me te tata kore toto.

(3) Ko te nui o te hydroxypropyl methylcellulose me te hiahia wai mo te kumete i heke tuatahi, katahi ka tino kaha te piki.

(4) Ko te whakaurunga o te kaihoko whakaheke wai ka whakapai ake i te raru o te nui haere o te tono wai mo te kumete, engari me whakahaere tika tana inenga, ki te kore ka heke te whakamararatanga o raro i te wai o te kumete ciment hou i konatunatua i etahi wa.

(5) Ko te taapiri i te hydroxypropyl methylcellulose i raro i te wai te whakauru raima kore-dispersible, ko te whakahaere i te inenga he painga ki te kaha.Ko te whakamatautau e whakaatu ana ko te kaha o te kaha o te raima i hangaia i te wai me te raima i hangaia e te hau he 84.8%, a ka tino whakatauritehia te painga.