1. He aha te whakamahinga matua o te hydroxypropyl methylcellulose (HPMC)?
——Whakautu: Kei te whakamahia nuitia te HPMC i roto i nga taonga hanga, paninga, kapia waihanga, uku, rongoa, kai, kakano, ahuwhenua, whakapaipai, tupeka me etahi atu ahumahi. Ka taea te wehewehea te HPMC ki: te karaehe hangahanga, te karaehe kai me te karaehe rongoa i runga i te whakamahinga. I tenei wa, ko te nuinga o nga hua o te kaainga he tohu hanga. I roto i te hanganga hanga, ka whakamahia te paura putty i roto i te nui nui, mo te 90% e whakamahia ana mo te paura putty, ko te toenga ka whakamahia mo te moata ciment me te kopa.
2. He maha nga momo o te hydroxypropyl methylcellulose (HPMC), a he aha nga rereketanga o o raatau whakamahinga?
——Whakautu: Ka taea te wehewehea te HPMC ki te momo inamata me te momo wetewete wera. Ka marara te momo hua inamata ki 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. Tata ki te 2 meneti, ka piki haere te pokey o te wē, ka puta he colloid karekau marama. Ko nga hua rewa wera, ka tutakina ki te wai matao, ka tere te marara i roto i te wai wera ka ngaro ki te wai wera. Ka taka te pāmahana ki tetahi pāmahana, ka ata puta te pokey tae noa ki te hanga i 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 whakarōpūhia nga ahuatanga kaore 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, me te kore he aukati.
3. He aha nga tikanga whakakore o te hydroxypropyl methylcellulose (HPMC)?
——Whakautu: Tikanga wetewete wai wera: I te mea karekau te HPMC e memeha ki te wai wera, ka taea te marara o te HPMC ki te wai wera i te timatanga, ka tere te rewa ina whakamatao. E rua nga tikanga angamaheni e whakaahuatia ana e whai ake nei:
1) Kuhua te nui o te wai wera ki roto i te ipu ka whakamahana ki te 70°C. Ko te hydroxypropyl methylcellulose i āta tapirihia i raro i te whakaoho puhoi, i te tuatahi ka maanu te HPMC ki runga i te mata o te wai, katahi ka hanga he slurry, ka whakamataohia i raro i te whakakorikori.
2), tāpirihia te 1/3, te 2/3 rānei o te nui o te wai e hiahiatia ana ki roto i te ipu, ka whakamahana ki te 70°C, whakamararatia te HPMC kia rite ki te tikanga o te 1), me te whakarite i te slurry wai wera; kātahi ka tāpirihia te toenga o te wai matao ki te slurry wai wera, ka whakamataohia te ranunga i muri i te whakaoho.
Te tikanga whakaranu i te paura: uruhia te paura HPMC me te maha o etahi atu matū 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 whakahiato, no te mea he iti noa te HPMC i roto i ia iti. kokonga Paura, ka memeha tonu ina pa ana ki te wai. ——Kei te whakamahi nga kaihanga paura putty me te mota i tenei tikanga. [Hydroxypropyl methylcellulose (HPMC) e whakamahia ana hei whakakaha me te pupuri wai i roto i te kumete paura putty.
4. Me pehea te whakatau i te kounga o te hydroxypropyl methylcellulose (HPMC) ngawari me te mohio?
——Whakautu: (1) Maama: Ahakoa kaore e taea e te ma te whakatau mena he ngawari te whakamahi i te HPMC, a mena ka taapirihia nga maaka ma i te wa o te mahi whakaputa, ka pa ki tona kounga. Engari, ko te nuinga o nga hua pai he pai te ma. (2) Pai: Ko te pai o te HPMC he 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, me te pai ake o te pai, te nuinga o te korero, ka pai ake. (3) Whakawhiti marama: hoatu te hydroxypropyl methylcellulose (HPMC) ki roto i te wai hei hanga i te colloid marama, ka tirohia tona whakawhiti marama. Ko te nui o te whakawhiti marama, ko te pai ake, e tohu ana he iti ake nga insolubles kei roto. . I te nuinga o te wa he pai te uruhanga o te reactor poutū, he kino ake te kino o te reactor whakapae, engari ehara i te mea he pai ake te kounga o te reactor poutū i to te reactor whakapae, a he maha nga mea hei whakatau i te kounga o te hua. . (4) Te taumahatanga motuhake: Ko te nui ake o te taumahatanga motuhake, ko te taumaha ake ka pai ake. He nui te motuhake, te tikanga na te mea he tiketike te ihirangi o te roopu hydroxypropyl kei roto, he nui te ihirangi o te roopu hydroxypropyl, he pai ake te pupuri wai.
5. He aha te pokey tika o te hydroxypropyl methylcellulose (HPMC)?
——Whakautu: Ko te paura Putty te tikanga 100,000 yuan, a ko nga whakaritenga mo te kumete he teitei ake, me te 150,000 yuan e hiahiatia ana mo te whakamahi ngawari. I tua atu, ko te mahi tino nui o te HPMC ko te pupuri wai, ka whai i te whakamaaru. I roto i te paura putty, i te mea he pai te pupuri wai me te iti o te pokey (70,000-80,000), ka taea hoki. O te akoranga, te teitei te pokey, te pai te pupuri wai whanaunga. Ka nui ake te pokey ki te 100,000, ka pa te pokey ki te pupuri wai. Kaore i te nui ake.
6. He aha nga tohu hangarau matua o te hydroxypropyl methylcellulose (HPMC)?
——Whakautu: Hydroxypropyl content and viscosity, te nuinga o nga kaiwhakamahi kei te awangawanga mo enei tohu e rua. Ko te hunga he nui te ihirangi hydroxypropyl he pai ake te pupuri wai. Ko te mea he pokey teitei he pai ake te pupuri i te wai, he ahua (kaore i te tino tika), a ko te mea he nui te pokey he pai ake te whakamahi ki te kumete sima.
7. He aha nga mea matua o te hydroxypropyl methylcellulose (HPMC)?
—— Whakautu: Ko nga rawa matua o te hydroxypropyl methylcellulose (HPMC): miro para, methyl chloride, propylene oxide, me etahi atu rauemi mata, houra caustic, waikawa, toluene, isopropanol, etc.
8. He aha te mahi matua o te tono HPMC ki te paura putty, a he matū te mahi?
——Whakautu: I roto i te paura putty, e toru nga mahi a HPMC mo te whakamatotoru, te pupuri wai me te hanga. Te Whakamatotoru: Ka taea te whakapouri i te Cellulose ki te whakatarewa me te pupuri i te ahua o te otinga ki runga, ki raro, me te aukati i te heke. Te pupuri wai: kia ata whakamaroke te paura putty, me te awhina i te konupūmā pungarehu ki te tauhohe i raro i te mahi a te wai. Hanganga: He whakahinuhinu te whakahinuhinu o te Cellulose, ka pai te hanga o te paura putty. Karekau a HPMC e uru ki nga tauhohenga matū, engari he mahi awhina noa. Ko te taapiri i te wai ki te paura putty me te tuu ki runga i te pakitara he tauhohenga matū, na te mea ka puta he matū hou. Mena ka tangohia e koe te paura putty i runga i te pakitara mai i te pakitara, ka huri hei paura, ka whakamahia ano, ka kore e whai hua na te mea kua hanga he matū hou (konupora warowaiha). ) hoki. Ko nga waahanga matua o te paura konupūmā pungarehu ko: he ranunga o Ca(OH)2, CaO me te iti o te CaCO3, CaO+H2O=Ca(OH)2—Ca(OH)2+CO2=CaCO3↓+H2O Ash calcium kei roto i te wai me te hau I raro i te mahi a te CO2, ka hangaia te konupūmā pākawa waro, i te mea ko te HPMC anake te pupuri i te wai, e awhina ana i te pai ake o te tauhohenga o te konupūmā pungarehu, me te kore e uru ki tetahi tauhohenga ake.
9. Ko te HPMC he ether cellulose kore-ionic, na he aha te mea kore-katote?
——Whakautu: Ki nga korero a te reimana, ko nga katote kore he matū e kore e katote i roto i te wai. Ko te Ionization e pa ana ki te tukanga e wetewete ai te electrolyte ki roto i nga katote kua utaina ka taea te neke noa i roto i tetahi whakarewa motuhake (pērā i te wai, te waipiro). Hei tauira, te konutai pūhaumāota (NaCl), te tote e kainga ana e tatou ia rā, ka memeha ki te wai, ka katote ki te whakaputa i nga katote konutai (Na+) ka taea te neke haere he pai te utu me nga katote pūhaumāota (Cl) he toraro. Arā, ka tukuna te HPMC ki roto i te wai, karekau e wehe ki roto ki nga katote katoo, engari ka noho i roto i te ahua o te ngota ngota.
10. He aha te paanga o te reera o te hydroxypropyl methylcellulose ki te aha?
——Whakautu: Ko te mahana o te reera o te HPMC e pa ana ki tona ihirangi methoxy. Ko te iti iho o te ihirangi methoxy↓, ka teitei ake te pāmahana reera.
11. He hononga kei waenganui i te maturuturunga iho o te paura putty me te HPMC?
——Whakautu: Ko te paura paura o te paura putty te nuinga e pa ana ki te kounga o te konupūmā pungarehu, he iti nei te mahi ki te HPMC. Ko te iti o te konupūmā konupūmā o te konupūmā hina me te ōwehenga hē o CaO me Ca(OH)2 i roto i te konupūmā hina ka mate te paura. Mēnā he pā ana ki te HPMC, mena he ngoikore te pupuri wai a HPMC, ka ngaro te paura.
12. He aha te rereketanga o te momo wai matao me te momo wairewa wera o te hydroxypropyl methylcellulose i roto i te tukanga whakaputa?
——Whakautu: Ko te momo wai matao o HPMC he mea rongoa ki te mata ki te glyoxal, a ka marara tere ki te wai matao, engari kaore e tino memeha. Ka memeha noa ina piki te pokey. Ko nga momo whakarewa wera kaore i te rongoa ki te glyoxal. Mena he nui te nui o te glyoxal, ka tere te marara, engari ka piki haere te pokey, a mena he iti te nui, ka puta ke te ahua.
13. He aha te haunga o te hydroxypropyl methylcellulose (HPMC)?
——Whakautu: Ko te HPMC i hangaia e te tikanga whakarewa ka whakamahi i te toluene me te isopropanol hei whakarewa. Mena kaore i te tino pai te horoinga, ka toe etahi kakara.
14. Me pehea te whiriwhiri i te hydroxypropyl methylcellulose (HPMC) e tika ana mo nga kaupapa rereke?
——Whakautu: Ko te tono paura putty: he iti noa nga whakaritenga, he 100,000 te viscosity, ka nui. Ko te mea nui kia pai te pupuri i te wai. Te tono mo te kumete: nga whakaritenga teitei ake, te pokey teitei, te 150,000 he pai ake. Te whakamahi i te kapia: ko nga hua inamata me te pokey teitei e hiahiatia ana.
15. He aha tetahi ingoa mo te hydroxypropyl methylcellulose?
——Whakautu: Hydroxypropyl Methyl Cellulose, English: Hydroxypropyl Methyl Cellulose Abreviation: HPMC or MHPC Alias: Hypromellose; Cellulose hydroxypropyl methyl ether; Hypromellose, Cellulose, 2-hydroxypropyl methyl Cellulose ether. Cellulose hydroxypropyl methyl ether Hyprolose.
16. Ko te tono o te HPMC ki te paura putty, he aha te take o nga mirumiru o te paura putty?
——Whakautu: I roto i te paura putty, e toru nga mahi a HPMC mo te whakamatotoru, te pupuri wai me te hanga. Kaua e uru atu ki tetahi tauhohenga. Nga take o te mirumiru: 1. Kia nui rawa te wai. 2. Ko te paparanga o raro karekau i maroke, waruhia noa tetahi paparanga ki runga, ka ngawari te pahuka.
17. He aha te rereketanga i waenga i te HPMC me te MC?
——Whakautu: Ko te MC he methyl cellulose, he mea hanga mai i te cellulose ether ma te rongoa i te miro parakore ki te kawakawa, te whakamahi methane chloride hei kaihoko whakaeera, me te haere i roto i te raupapa tauhohenga. Ko te tikanga, ko te 1.6~2.0 te tohu whakakapinga, he rereke ano te whakarewatanga me nga nekehanga rereke o te whakakapi. No te ether cellulose kore-ionic.
(1) Ko te pupuri i te wai o te methyl cellulose e whakawhirinaki ana ki te nui o te taapiri, te pokey, te pai o te matūriki me te tere memeha. Ko te tikanga, mena he nui te taapiri, he iti te pai, he nui te pokey, he nui te reeti pupuri wai. I roto i a raatau, ko te nui o te taapiri he tino paanga ki te reiti pupuri wai, a, ko te taumata o te potata kaore i te rite ki te taumata o te reeti pupuri wai. Ko te tere o te whakakore i te nuinga ka whakawhirinaki ki te tohu o te whakarereketanga o te mata o nga matūriki cellulose me te pai o te matūriki. I roto i nga ethers cellulose i runga ake nei, ko te methyl cellulose me te hydroxypropyl methyl cellulose he teitei ake te reiti pupuri wai.
(2) He wairewa te Methylcellulose ki te wai matao, a ka uaua te memeha ki te wai wera. He tino pumau tona otinga wai i te awhe o te pH=3~12. He pai te hototahitanga ki te māngaro, kapia guar, aha atu, me te maha o nga surfactants. Ka tae te pamahana ki te mahana o te wai, ka puta te wai.
(3) Ko nga huringa o te pāmahana ka tino pa ki te reiti pupuri wai o te methyl cellulose. Ko te tikanga, ka nui ake te pāmahana, ka kino te pupuri wai. Mena ka nui ake te pāmahana moata ki te 40°C, ka tino heke te pupuri wai o te methyl cellulose, ka tino pa ki te hanga o te moata.
(4) Ko te Methyl cellulose he painga nui ki te hanga me te whakapiri o te moata. Ko te “adhesion” i konei e pa ana ki te kaha whakapiri i rongohia i waenga i te taputapu tono a te kaimahi me te tïpako pakitara, ara, te parenga kutikuti o te moata. He tiketike te adhesiveness, he nui te parenga kutikuti o te moata, me te kaha e hiahiatia ana e nga kaimahi i roto i te tukanga o te whakamahinga he nui ano hoki, a he kino te mahi hanga o te moata. Ko te piri o te Methyl cellulose kei te taumata ngawari i roto i nga hua cellulose ether.
Ko te HPMC he hydroxypropyl methylcellulose, he katote-kore te cellulose i konatunatua etera i hangaia mai i te miro parakore i muri i te whakamaaramatanga, ma te whakamahi i te propylene oxide me te methyl chloride hei maataki whakaeera, a na roto i te raupapa tauhohenga. Ko te tohu o te whakakapinga ko te tikanga 1.2~2.0. He rereke ona ahuatanga na te rereke o nga owehenga o te ihirangi methoxyl me te ihirangi hydroxypropyl.
(1) He ngawari te wairewa Hydroxypropyl methylcellulose i roto i te wai matao, a ka raru ki te rewa i te wai wera. Engari he tino teitei ake te pāmahana o te wai wera i tera o te methyl cellulose. Ko te memehatanga i roto i te wai matao ka tino pai ake ki te methyl cellulose.
(2) Ko te viscosity o te hydroxypropyl methylcellulose e pa ana ki tona taumaha ngota, me te nui ake o te taumaha o te ngota, ka nui ake te viscosity. Ka pa ano te pamahana ki tona pokey, i te pikinga o te pāmahana, ka heke te pokey. Heoi, he iti ake te paanga o tona pokey teitei i te methyl cellulose. He pūmau tana otinga ina penapena ki te pāmahana rūma.
(3) Ko te Hydroxypropyl methylcellulose he pumau ki te waikawa me te kawakawa, a he tino pumau tona otinga wai i roto i te awhe o te pH = 2 ~ 12. He iti te paanga o te houra me te wai kotakota ki runga i ana mahi, engari ka taea e te kawakore te tere ake i te memeha me te whakanui ake i te pokey. Ko te Hydroxypropyl methylcellulose he pumau ki nga tote noa, engari ka nui te kukū o te wairewa tote, ka piki ake te pokey o te otinga hydroxypropyl methylcellulose.
(4) Ko te pupuri i te wai o te hydroxypropyl methylcellulose e whakawhirinaki ana ki te nui o te taapiri, te viscosity, me etahi atu, me te tere o te pupuri wai i raro i te nui o te taapiri he nui ake i tera o te methyl cellulose.
(5) Ka taea te whakauru Hydroxypropyl methylcellulose ki te wai-wairewa polymer pūhui ki te hanga i te otinga rite me te teitei pokey. Pērā i te waipiro polyvinyl, te māngaro ether, te kāpia huawhenua, aha atu.
(6) Ko te piri o te hydroxypropyl methylcellulose ki te hanga kumete he teitei ake i tera o te methylcellulose.
(7) Ko te Hydroxypropyl methylcellulose he pai ake te aukati i te methylcellulose, a he iti ake te whakaheke o tana otinga e nga enzymes i te methylcellulose.
18. He aha te mea e tika ana kia arohia ki roto i te tino tono o te hononga i waenga i te pokey me te pāmahana o te HPMC?
——Whakautu: Ko te pokey o te HPMC he taurite ki te pāmahana, ara, ka piki te pokey i te hekenga o te pāmahana. Ko te pokey o te hua ka korerohia e matou e pa ana ki te hua whakamatautau o tana otinga wai 2% i te mahana o te 20 nga nekehanga Celsius.
I roto i nga whakamahinga mahi, me tohu ko nga waahi he nui te rereketanga o te pāmahana i waenga i te raumati me te hotoke, ka tūtohuhia kia whakamahia te iti o te viscosity i te takurua, he pai ake te hanga. Ki te kore, ka iti te pāmahana, ka piki ake te pokey o te cellulose, ka kaha te kaha o te ringa i te wa e wiriwiri ana.
Pokey Waenga: 75000-100000 Te nuinga whakamahia mo putty.
Take: pai te pupuri wai.
Te pokey teitei: 150000-200000 Te nuinga o te whakamahia mo te matūriki polystyrene matūriki waiariki moata moata kapia paura me vitrified microbead waiariki moata waiariki.
Ko te take: ko te pokey teitei, ko te kumete e kore e ngawari ki te taka, ki te whakairi, ki te whakapai ake i te hanga.
Engari i te nuinga o te korero, ko te teitei o te pokey, ko te pai ake o te pupuri wai. Na reira, i te whakaaro ki te utu, he maha nga wheketere moata paura maroke ka whakakapi i te cellulose reo me te iti (20000-40000) me te cellulose reo-viscosity (20000-40000) hei whakaiti i te nui o te taapiri. .
Wā tuku: Noema-21-2022