Focus on Cellulose ethers

Ether Cellulose i roto i te kumete whakamaarama whaiaro

Ko te Ether Cellulose he kupu whanui mo te raupapa o nga hua ka puta mai i te tauhohenga o te cellulose alkali me te kaihoko whakaetere i raro i etahi tikanga.Ka whakakapihia te cellulose alkali e nga momo etherifying agents ki te whiwhi rerekeethers cellulose.E ai ki nga ahuatanga o te katote o nga mea whakakapi, ka taea te wehea nga etera cellulose ki nga waahanga e rua: te katote (pērā i te carboxymethyl cellulose) me te kore-ionic (pēnei i te methyl cellulose).E ai ki te momo whakakapinga, ka taea te wehea te cellulose ether ki te monoether (pēnei i te methyl cellulose) me te ether whakauru (pēnei i te hydroxypropyl methyl cellulose).E ai ki te rereke rereke, ka taea te wehewehe ki te wai-wairewa (penei i te hydroxyethyl cellulose) me te wairewa-wairewa (penei i te ethyl cellulose), me etahi atu. wehea ki momo inamata me te mata tukinotia momo whakaroa whakaroa.

I muri i te rewa o te cellulose ether i roto i te kumete ki roto i te wai, ko te tohatoha whai hua me te riterite o nga rauemi cimentitious i roto i te punaha ka whakapumautia na te mahi o te mata, a ko te cellulose ether, hei colloid tiaki, "ka takai" nga matūriki totoka me te uhi. ratou i runga i te mata o waho.Hanga he kiriata whakahinuhinu, kia pai ake te punaha moata, me te whakapai ake i te rere o te kumete i te wa o te whakaranu me te maeneene o te hanga.

Na tona ake hanganga ngota, na te otinga cellulose ether e kore e ngawari te ngaro o te wai i roto i te kumete, me te tuku haere i roto i te waa roa, ka whakawhiwhia te moata ki te pupuri wai pai me te kaha mahi.

Ko te kumete sima-a-whaiaro, he iti te pokey hydroxypropyl methylcellulose ether.I te mea ko te whenua katoa ka whakatauritea me te iti o te wawaotanga a nga kaimahi hanga, ka whakaritea ki nga mahi whakaene a-ringa o mua, ka tino pai ake te papatahi me te tere hanga.Ko te wa whakamaroke whakamaroke-whaiaro ka whai painga ki te pupuri wai pai o te hydroxypropyl methylcellulose.I te mea ko te whakataurite-whaiaro e hiahia ana kia taea e te kumete whakakorikoria kia taurite aunoa ki te whenua, he ahua nui te wai.I muri i te taapiri i te hpmc, ka whakahaere i te whenua Ko te pupuri i te wai o te mata kaore i te kitea, ka kaha te kaha o te mata i muri i te whakamaroke, me te iti o te whakaheke, e whakaiti ana i nga pakaru.Ko te taapiri o te HPMC e whakarato ana i te viscosity, ka taea te whakamahi hei awhina anti-sedimentation, te whakarei ake i te rere me te papu, me te whakapai ake i te pai o te para i te whenua.

Ko te ether cellulose pai he ahua puhoi me te kiato rahi iti;He pai te ma o te HPMC parakore, he parakore nga rauemi mata e whakamahia ana i roto i te whakaputanga, he pai ake te tauhohenga me te kore he poke, he maamaa te wairewa wai, he teitei te whakawhiti marama, kaore he haukini, he maaka me te waipiro.Te reka, te kiko i raro i te karu karu, i te karaehe whakanui ranei.


Wā tuku: Tihema-06-2022
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