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Hydroxypropyl methylcellulose hpmc matauranga noa

1. He aha te kaupapa matua o te HPMC?

Ka whakamahia tenei hua hei threckener, marara, piata ana, kaikiri, te paninga hinu-hinu, whakakiihia, emulsifier me te whakatuu i roto i te umanga kakano. Kei te whakamahia whānuitia i roto i te riihi hinu, te hinu, te hinu, te pepa, te hiako, te rongoa, te kai me nga ahumahi kai.

2. He aha te mahi o te HPMC i roto i te pakitara o roto?

E toru nga mahi a HPMC: Pakanga PuTTTY mo te pakitara o roto, he matotoru, he wai-maru me te hanga. Ko te kukume: ka taea e te methyl cellulose ma te hurihuri, i te otinga ranei ki te pupuri i nga mahi rite tonu me te aukati i te rere me te whakairi i te rere me te aukati. Maukati Te wai: Ko te paura pakitara o roto ka maroke haere, a ka whakaatuhia te konupuna kotakota ki te whakamahi wai. Hangahanga Hangarau: Ko te methyl cellulose he mahi whakamakuku, ka taea e te hanga paura mo te pakitara o roto he hanganga miihini pai. Kaore te HPMC e whai waahi ki te whakarereke o nga matū katoa, engari ka uru noa ki te whakakii. Ko te paura pakitara o roto, ko te huringa matū, na te mea kua tangohia te paura matū hou, ka whakatuwherahia, ka whakamahia ano hoki, ka whakamahia te konutai hou. The main components of gray calcium powder are: a mixture of Ca(OH)2, CaO and a small amount of CaCO3, CaO+H2O=Ca(OH)2 —Ca(OH)2+CO2=CaCO3↓+H2O gray calcium in water and air Under the action of CO2, calcium carbonate is formed, while HPMC only retains water and assists the better reaction of gray calcium, and it does not participate in Tetahi urupare ano.

3. Me pehea te whakawa i te kounga o te HPMC me te koretake?

(1) ma te maheni: Ahakoa kaore e taea e te ma te whakatau mehemea he ngawari te whakamahi a te HPMC, a mehemea ka tapiritia e te HPMC, a mehemea ka tapiritia e te HPMER i roto i te mahinga whakaputa, ka pa te kounga. Heoi, he pai te ma o nga hua pai. (2) Te Haumaru: Ko te mea pai o te HPMC e 80 mesh, 120 he iti ake te rahi, ko te nuinga o te HPMC i hangaia i te hebei ko 80 te mata. Ko te pai o te pai, ko te mea pai ake i te katoa. (3) Whakawhiti: Whakanohia te methylcelcelose (HPMC) i roto i te wai hei hanga i tetahi kohinga marama, ka titiro ki tana tuku. Ko te nui ake o te whakawhiti, ko te pai ake, e whakaatu ana i te iti ake o nga koretake o roto. . Ko te haangai o te reactor poutū, he kino ake te kino, engari kaore i te kii ko te kounga o te reactor poutū he pai ake i te kaiwhakatakoto whakapae. Ko te kounga hua e whakatauhia ana e te maha o nga mea. (4) Te rahi: Te rahi o te rahi, te nui ake o te kaha. Ko te tino motuhake na te mea nui na te nui o te hydroxypropyl i roto, me te teitei ake o te kiko hydroxypropyl, ko te pai ake o te pupuri wai.

4. He aha nga mea e tika ana kia aro ki te tono i te tirohanga me te pāmahana o te HPMC?

Ko te tirohanga o te HPMC he rite ki te pāmahana, ara, ka piki haere te kaihoroi i te heke o te pāmahana. I te nuinga o te wa ka kii matou ko te matatau o te hua e tohu ana i te whakamatautau i tana otinga 2% i te pāmahana o te 20 nekehanga Celsius. I roto i nga tono whaitake, i nga waahanga me te rereketanga o te pāmahana nui i waenga i te raumati me te takurua, me tohuhia kia whakamahia te tino iti o te takurua, he pai ake te hanga. Ki te kore, ka iti te pāmahana, ka piki te whānuitanga o te cellulose, ka nui te taumaha o te ringa i te wa e tarai ana.

5. He aha nga tikanga o te HPMC?

Tikanga wai wera: i te mea kaore i te rewa te HPMC i te wai wera, ka taea te marara ki te wai wera i te wa tuatahi, a ka tere te memeha. E rua nga tikanga angamaheni e whakaahuahia ana e whai ake nei: 1). Te nui o te wai wera me te wera ki te 70 ° C. Tāpirihia te MydroxyPropyl methylcellulose me te whakaohooho puhoi, tiimata te HPMC e rere ana i runga i te mata o te wai, ka tiimata te hanga, ka whakamarokehia te slurry me te whakaohooho. 2). Tāpirihia te 1/3, te 2/3 ranei o te nui o te wai ki roto i te ipu ka wera ki te 70 ° C. E ai ki te tikanga o te 1), ka tohaina te HPMC ki te whakareri i te pupuhi wai wera; Na ka tapirihia te toenga o te wai makariri ki te wai wera i roto i te riihi, whakamatao i te ranunga i muri i te whakaohooho. Ko ia kokonga o te HPMC, ka whakakotahihia te wai ki te rewa, na te HPMC ka rewa tonu i te wa e tutuki ana i te wai. -Ko te paura me nga kaihanga o te kiore e whakamahi ana i tenei tikanga. [Hydroxypropyl methyl cellulose (HPMC) e whakamahia ana hei rangatira o te wai me te pupuri-pupuri i te wai i roto i te more paura Putty. ]

6. He aha teinengao te HPMC tapiritia i te paura putty?

Ko te nui o te HPMC e whakamahia ana i roto i nga tono tuuturu e rereke ana i te āhuarangi, te pāmahana, te kounga o te pungarehu o te moana, te "kounga e hiahiatia ana e nga kaihoko". Ko te tikanga, ko te 4 kg me te 5 kg. Hei tauira, ko te paura putty i roto i te whakapaipai '> ko Beijing te nuinga 5 kg; Ko te paura putty i Guizhou ko te nuinga o te 5 kg i te raumati me te 4.5 kg i te takurua; Ko te nui o te taapiri a Yunnan he iti noa iho, ko te 3 kg-4 kg me era atu.


Te wa tuku: Nov-13-2021