Ko te Methylcellulose (MC) ko te wai-wairewa cellulose pärönaki ki te thickening, kiriata-hanga, pūmau me ētahi atu āhuatanga. Ka whakamahia i roto i nga kai, rongoa, hanga, whakapaipai me etahi atu mara. He mea ahurei tana whanonga whakangao i roto i te wai, he ngawari hoki ki te hanga i tetahi otinga colloidal, no reira he mea nui te tikanga whakaranu tika mo tona paanga.
1. Nga ahuatanga o te methylcellulose
Ko te Methylcellulose kaore i te ngawari te whakarewa i te pāmahana rūma, a ka tino paheketia tona whakarewatanga e te pāmahana. I roto i te wai matao, ka taea e te methylcellulose te hanga i tetahi otinga rite ma te marara haere; engari i roto i te wai wera, ka tere te pupuhi me te kiri. Na reira, he mea tino nui te whakahaere i te pāmahana i te wa e whakaranua ai te methylcellulose ki te wai.
2. Whakaritenga
Methylcellulose: Kei te waatea mai i nga kaiwhakarato matū, i nga whare taiwhanga ranei.
Te wai: E taunaki ana kia whakamahia te wai kua maturu, kua whakakorehia ranei hei karo i nga poke i roto i te wai maro kia kore e pa ki te whakakorenga o te methylcellulose.
Taputapu Whakaranu: I runga i o hiahia, ka taea te whakamahi i te miihini ringa ngawari, te miihini tere tere iti, te taputapu whakauru ahumahi ranei. Mena he mahi taiwhanga taiwhanga iti, e taunaki ana kia whakamahia he whakakorikori autō.
3. Te ranu
Tikanga 1: Tikanga marara wai makariri
Wai matao premix: Tangohia te nui o te wai matao (he pai ake te 0-10°C) ka maka ki roto i te ipu ranu. Me mohio kei raro iho te pāmahana wai i te 25°C.
Āta tāpirihia te methylcellulose: Ringihia āta te paura methylcellulose ki roto i te wai matao, whakaohokia i te wā e ringihia ana. I te mea ka piri tonu te methylcellulose, ko te taapiri tika ki te wai ka hanga kapoka, ka pa ki te marara. No reira, me ata whakahaere te tere o te taapiri kia kore ai e taapiri te paura nui tonu.
Whakaranu pai: Whakamahia he whakaranu i runga i te tere reo, iti ranei kia tino marara te methylcellulose ki roto i te wai. Ko te wa whakakorikori ka whakawhirinaki ki te pokey otinga whakamutunga e hiahiatia ana me te momo taputapu, me te nuinga o te 5-30 meneti te roa. Me whakarite kia kore he putunga, he putunga paura ranei.
Te pupuhi: I te wa e korikori ana, ka mimiti haere te methylcellulose i te wai, ka pupuhi, ka hanga he otinga colloidal. Ka roa pea tenei mahi, i runga i te momo me te nui o te methylcellulose e whakamahia ana. He roa ake te methylcellulose viscosity teitei ake.
Tukua kia pakeke: Ka oti te whakakorikori, he pai ake me waiho te ranunga kia noho mo etahi haora, mo te po ranei kia tino rewa te methylcellulose me te tino tetere. Ka taea e tenei te whakapai ake i te riterite o te otinga.
Tikanga 2: Tikanga takirua o te wai wera me te wai matao
He pai tenei tikanga mo te methylcellulose tino kakahore he uaua ki te marara tika ki te wai matao.
Premix wai wera: Whakawerahia tetahi wahi o te wai ki te 70-80°C, ka tere te whakaoho i roto i te wai wera me te taapiri i te methylcellulose. I tenei wa, na te nui o te pāmahana, ka tere te tipu o te methylcellulose engari kaore e tino memeha.
Te waimeha wai matao: I a koe e whakakorikori tonu ana ki te wairewa pāmahana teitei, me ata taapirihia te toenga o te wai matao tae noa ki te heke o te pāmahana otinga ki te pāmahana noa, ki raro ranei i te 25°C. Ma tenei ara, ka memeha te methylcellulose tetere ki te wai matao ka hanga he otinga colloidal pumau.
Te whakakorikori me te tuku kia tu: Whakakorikori tonu i muri i te whakamatao kia rite tonu te otinga. Ka waiho te ranunga kia noho kia rewa katoa.
4. Whakatupato
Te pāmahana whakahaere: Ko te whakarewatanga o te methylcellulose he tino tairongo ki te pāmahana. Ko te tikanga he pai te marara i roto i te wai matao, engari tera pea ka hanga he kiri koretake i roto i te wai wera. Hei karo i tenei ahuatanga, ko te nuinga o te waa e taunaki ana kia whakamahia te tikanga whakamararatanga wai matao, te tikanga rua wera me te makariri ranei.
Aukati i te kapoipoi: I te mea ko te methylcellulose he tino mimiti, ko te riringi i te nui o te paura ki roto i te wai ka tere te whanui o te mata me te hanga kapoi ki roto i te kete. Ehara tenei i te mea ka pa ki te paanga whakakorenga, engari ka arahi pea ki te koretake o te hua whakamutunga. Na reira, kia ata tapirihia te paura me te whakaoho pai.
Tere whakakorikori: Ka taea e te whakakorikori tere tere te whakauru i te maha o nga mirumiru, ina koa i roto i nga otinga whai kiko ake. Ka pa nga mirumiru ki te mahi whakamutunga. Na reira, ko te whakamahi i te whakaoho tere iti he pai ake te whiriwhiri ina hiahia koe ki te whakahaere i te pokey me te rōrahi mirumiru.
Te kukū o te methylcellulose: Ko te kukū o te methylcellulose i roto i te wai he nui te awe ki runga i te whakakorenga me nga ahuatanga otinga. Ko te tikanga, i te iti o te kukū (iti iho i te 1%), he kikokore te otinga me te ngawari ki te whakaoho. I nga kohinga teitei (he nui ake i te 2%), ka tino kikokore te otinga me te hiahia kia kaha ake te mana ina oho.
Te wa e tu ana: I te wa e whakarite ana i te otinga methylcellulose, he mea nui te wa tu. Ehara tenei i te mea ka taea e te methylcellulose te whakakore katoa, engari ka awhina ano hoki i nga mirumiru i roto i te otinga kia ngaro noa, ka karo i nga raruraru mirumiru i roto i nga tono ka whai ake.
5. Nga pukenga motuhake mo te tono
I roto i te ahumahi kai, ko te methylcellulose te nuinga o te wa e whakamahia ana ki te hanga i nga whakamaarama, te whakapumau, te colloids ranei, penei i te aihikirimi, te taro, te inu, me era atu. I roto i enei tono, ko te whakaurunga o te methylcellulose ki te wai ka pa tika ki te waha me te kakano o te hua whakamutunga. He iti te nui o te whakamahinga o te methylcellulose kai, me aro nui ki te pauna tika me te taapiri haere.
I roto i te waahi rongoa, ka whakamahia te methylcellulose hei kaihoko whakakore mo nga papa, hei kawe tarukino ranei. I tenei keehi, ko te whakarite i nga raau taero me tino rite te otinga me te pumau, na reira ka tūtohu kia whakahaere i te kounga o te hua whakamutunga ma te whakanui haere i te pokey me te arotau i nga tikanga whakaoho.
Ko te whakaranu i te methylcellulose ki te wai he tikanga e hiahia ana te manawanui me te mohio. Ma te whakahaere i te pāmahana o te wai, te raupapa taapiri me te tere whakaoho, ka taea te whiwhi i te otinga methylcellulose rite me te pumau. Ahakoa ko te tikanga whakamararatanga wai matao, ko te tikanga rua wera me te makariri, ko te mea nui ko te karo i te pupuhi o te paura me te whakarite kia nui te pupuhi me te okioki.
Wā whakairinga: Sep-30-2024