1.Whakaraupapa:
HPMCKa taea te wehewehe ki te momo tere me te momo wera-rewa. Ka tere te marara o nga momo momo hua i roto i te wai matao ka ngaro ki te wai. I tenei wa, karekau he viscosity o te wai, no te mea ka marara noa te HPMC ki te wai, kaore he tino rewa. I muri tata ki te 2 meneti, ka piki haere te pokey o te wē ki te hanga i tētahi colloid viscous mārama. Ko nga hua wetewete wera, ka pa ki te wai makariri, ka tere te marara ki te wai wera ka ngaro ki te wai wera. Ka heke te pāmahana ki tetahi pāmahana, ka ata puta te pokey tae noa ki te hanganga o te colloid viscous marama. Ko te momo wera-rewa ka taea anake te whakamahi i te paura putty me te moata. I roto i te kapia wai me te peita, ka puta te ahua o te kopiri, kare e taea te whakamahi. Ko te momo inamata he whanui ake nga tono. Ka taea te whakamahi i roto i te paura putty me te kumete, tae atu ki te kapia wai me te peita, kaore he whakapae.
2.Te tikanga whakakore:
Tikanga wetewete wai wera: I te mea karekau te HPMC e memeha ki te wai wera, ka taea te whakamarara te HPMC ki roto i te wai wera i te wa tuatahi, ka tere te rewa i te wa whakamatao. E rua nga tikanga e whai ake nei: 1), hoatu te nui e hiahiatia ana ki roto i te ipu wai wera ka whakamahana ki te 70°C. Ko te hydroxypropyl methylcellulose i āta tāpirihia me te puhoi o te whakaoho, i te tuatahi ka maanu te HPMC ki runga i te mata o te wai, katahi ka hanga he slurry, ka whakamataohia ki te whakakorikori. 2), tāpirihia te nui o te 1/3, 2/3 rānei o te wai i roto i te ipu, ka whakamahana ki te 70 ° C, kia rite ki te tikanga o te 1), whakamararatia te HPMC, te whakarite slurry wai wera; ka tāpirihia te toenga o te wai matao ki te wai wera I roto i te slurry, i whakamataohia te ranunga i muri i te whakaoho.
Te tikanga whakaranu i te paura: Whakaranuhia 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 me te kore e piri tahi, no te mea he iti noa te HPMC o ia kokonga iti ka rewa tonu te paura ki te wai. ——Ko tenei tikanga e whakamahia ana e nga kaihanga putty paura me te moata. [Hydroxypropyl methylcellulose (HPMC)ka whakamahia hei kaitakawaenga me te kaihoko pupuri wai i roto i te kumete paura putty]
Te wa tuku: Apr-25-2024