1. He aha te kaupapa matua o HPMC?
Ko tenei hua ka whakamahia hei whakamaarama, whakamarara, herea, taapiri, paninga hinu-atete, whakakii, emulsifier me te whakapumau i roto i te umanga kakano.Kei te whakamahia nuitia i roto i te kapia waihanga, petrochemical, uku, pepa, hiako, rongoa, kai me nga umanga whakapaipai.
2. He aha te mahi a te HPMC i roto i te paura putty pakitara o roto?
E toru nga mahi a te HPMC: te paura putty mo te pakitara o roto, te matotoru, te kati wai me te hanga.Te Kukutanga: Ka taea te whakakorikori te Methyl cellulose ma te maanu, ma te wairewa wai ranei hei pupuri i nga mahi rite me te riterite me te aukati i te rere me te iri.Te wai maukati: Ka maroke te paura o roto o te pakitara, a ka kitea te konupūmā kotakota i roto i te whakamahinga o te wai.Hangahanga Hangarau: Methyl cellulose he mahi makuku, ka taea e te paura putty o roto te hanga miihini pai.Kaore te HPMC e uru ki te whakarereketanga o nga matū katoa, engari ka uru noa ki te whakakii.Ko te paura putty pakitara o roto, kei runga i te pakitara, he huringa matū, na te mea he huringa matū hou, ka tangohia te paura putty o roto mai i te pakitara, ka mira, ka whakamahia ano , Na te mea kua puta he matū matū hou (calcium bicarbonate) .Ko nga waahanga matua o te paura konupūmā hina ko: he ranunga o Ca(OH)2, CaO me te iti o CaCO3, CaO+H2O=Ca(OH)2 —Ca(OH)2+CO2=CaCO3↓+H2O konupūmā hina i roto i te wai me te hau I raro i te mahi a CO2, ka hangaia te konupūmā pākawa waro, i te mea ko te HPMC anake te pupuri i te wai me te awhina i te pai ake o te tauhohenga o te konupūmā hina, me te kore e uru ki tetahi tauhohenga ake.
3. Me pehea te whakatau i te kounga o te HPMC me te ngawari?
(1) Maama: Ahakoa kaore e taea e te maama te whakatau mena he ngawari te whakamahi a HPMC, a mena ka whakauruhia he kanapa ki roto i te mahi whakaputa, ka pa ki tona kounga.Heoi, he pai te ma o nga hua pai.(2) Pai: Ko te pai o te HPMC ko te 80 mesh me te 100 mesh, he iti ake te 120 mesh, a ko te nuinga o te HPMC i hangaia i Hebei he 80 mesh.Ko te pai o te pai, ko te pai ake i te nuinga.(3) Whakawhitinga: Kuhua te hydroxypropyl methylcellulose (HPMC) ki te wai kia hanga he colloid maramara, ka titiro ki tona tukunga.Ko te nui ake o te whakawhiti, ko te pai ake, e tohu ana he iti ake nga insolubles o roto..I te nuinga o te wa he pai te uruhanga o te reactor poutū, he kino ake te reactor whakapae, engari ehara i te mea he pai ake te kounga o te reactor poutū i to te reactor whakapae.Ko te kounga o te hua ka whakatauhia e te maha o nga mea.(4) Whakaritenga: Ko te nui o te waahanga, ko te taimaha ka pai ake.Ko te tino motuhake ko te tikanga na te nui o te ihirangi hydroxypropyl kei roto, me te teitei ake o te ihirangi hydroxypropyl, ka pai ake te pupuri i te wai.
4. He aha te mea me aro ki te tono i te pokey me te pāmahana o te HPMC?
Ko te pokey o te HPMC he rerekee ki te pāmahana, ara, ka piki te pokey i te hekenga o te pāmahana.I te nuinga o te wa e kii ana matou ko te pokey o tetahi hua e pa ana ki te hua o te whakamatautau i tana otinga wai 2% i te mahana o te 20 nga nekehanga Celsius.I roto i nga whakamahinga mahi, i nga waahi he nui te rereketanga o te wera i waenga i te raumati me te hotoke, me tohuhia he mea pai ki te whakamahi i te waahi iti i te hotoke, he pai ake te hanga.Ki te kore, ka iti te pāmahana, ka piki ake te pokey o te cellulose, ka taumaha te ringa ina waruhia.
5. He aha nga tikanga whakakore o HPMC?
Tikanga wetewete wai wera: I te mea karekau te HPMC e rewa ki te wai wera, ka taea te whakamarara te HPMC ki roto i te wai wera i te timatanga, ka tere te memeha ina whakamatao.E rua nga tikanga angamaheni e whakaahuatia ana e whai ake nei: 1).Te nui o te wai wera me te whakamahana ki te 70°C.Taapirihia te hydroxypropyl methylcellulose me te whakaoho puhoi, timata te HPMC ki runga i te mata o te wai, katahi ka hanga he slurry, ka whakamatao i te slurry me te whakaoho.2).Tuhia he 1/3, 2/3 ranei o te nui o te wai e hiahiatia ana ki roto i te ipu ka whakamahana ki te 70°C.E ai ki te tikanga o 1), whakamararatia HPMC ki te whakarite slurry wai wera;ka tāpirihia te toenga o te wai matao ki te wai wera I roto i te slurry, whakamataohia te ranunga i muri i te whakaoho.Te tikanga whakaranu i te paura: uruhia te paura HPMC me te nui o etahi atu mea paura, uru pai ki te whakaranu, katahi ka tapirihia he wai kia memeha, katahi ka taea te rewa te HPMC i tenei wa kaore he kopiri me te whakahiato, no te mea ko ia kokonga iti, he mea noa. he iti o te HPMC Ka memeha tonu te paura ina tutaki ki te wai.-Ka whakamahia e nga kaihanga paura me nga moata tenei tikanga.[Hydroxypropyl methyl cellulose (HPMC) e whakamahia ana hei whakakaha me te pupuri wai i roto i te kumete paura putty.]
6. He aha teinengao HPMC kua tapirihia ki te paura putty?
Ko te nui o te HPMC e whakamahia ana i roto i nga tono tuuturu he rereke i runga i te ahuarangi, te pāmahana, te kounga konupūmā pungarehu o te rohe, te tauira o te paura putty, me te "kounga e hiahiatia ana e nga kaihoko".Ko te tikanga, kei waenganui i te 4 kg ki te 5 kg.Hei tauira, ko te paura putty i te whakapaipai'>Beijing te nuinga 5 kg;ko te paura putty i Guizhou te nuinga 5 kg i te raumati me te 4.5 kg i te takurua;He iti te rahinga taapiri a Yunnan, ko te tikanga 3 kg-4 kg me etahi atu.
Wā tuku: Nov-13-2021