Maganin HPMC

1, menene babban amfani da hydroxypropyl methyl cellulose (HPMC)?

Amsa: HPMC ana amfani dashi sosai a cikin kayan gini, sutura, resins na roba, yumbu, magani, abinci, kayan yadi, noma, kayan kwalliya, taba da sauran masana'antu.Ana iya raba HPMC zuwa: ƙimar gini, ƙimar abinci da darajar likita bisa ga amfani.A halin yanzu kayan gida galibi matakin gini ne, a matakin gini, adadin foda ya yi yawa sosai, kusan kashi 90% ana amfani da su wajen yin powder, sauran ana yin turmi da gamnai.

2, hydroxypropyl methyl cellulose (HPMC) ya kasu kashi iri-iri, menene bambanci tsakanin amfani da shi?

Amsa :HPMC za a iya raba nan take da zafi mai narkewa, samfuran nan take, a cikin ruwan sanyi da sauri sun watse, sun ɓace a cikin ruwa, a wannan lokacin ruwan ba shi da ɗanko, saboda HPMC kawai ya tarwatse a cikin ruwa, babu narkar da gaske.Kusan mintuna 2, dankowar ruwa a hankali yana ƙaruwa, yana samar da colloid mai haske.Heat mai soluble kayayyakin, a cikin ruwan sanyi agglomeration, na iya zama a cikin ruwan zafi, da sauri tarwatsa, bace a cikin ruwan zafi, har sai da zazzabi saukad da zuwa wani zazzabi, danko sannu a hankali bayyana, har sai da samuwar m danko colloid.Za a iya amfani da nau'in mai soluble mai zafi kawai a cikin sa foda da turmi, a cikin manne ruwa da sutura, zai iya bayyana abin mamaki na agglomeration, ba za a iya amfani da shi ba.Narkar da model nan take, aikace-aikace ikon yinsa ne 'yan fadi, a gundura da yaro foda da turmi, da kuma a cikin ruwa manne da shafi, duk za a iya amfani da, ba su da abin da taboo.

3, hydroxypropyl methyl cellulose (HPMC) hanyoyin rushewa suna da waɗannan?

– Amsa: Hanyar narkar da ruwan zafi: saboda ba a narkar da HPMC a cikin ruwan zafi, don haka ana iya watsewar farko na HPMC a cikin ruwan zafi, sannan a narkar da shi da sauri lokacin sanyaya, ana bayyana hanyoyi guda biyu kamar haka:

1) Cika akwati da ruwan zafi mai yawa kamar yadda kuke buƙata kuma kuyi zafi zuwa kusan 70 ℃.Hydroxypropyl methyl cellulose ne a hankali kara a karkashin jinkirin stirring, da kuma HPMC iyo a saman ruwa, sa'an nan kuma a hankali Forms wani slurry, wanda aka sanyaya a karkashin stirring.

2) Ƙara 1/3 ko 2/3 na adadin da ake bukata na ruwa a cikin akwati kuma zafi shi zuwa 70 ℃.Watsawa HPMC bisa ga hanyar 1) don shirya slurry ruwan zafi;Sa'an nan kuma ƙara sauran ruwan sanyi a cikin slurry ruwan zafi da kuma kwantar da cakuda bayan motsawa.

Hanyar hada foda: HPMC foda da adadi mai yawa na sauran kayan aikin powdery, cikakke gauraye da blender, sa'an nan kuma ƙara ruwa don narke, a wannan lokacin HPMC na iya narke, kuma ba agglomerate ba, saboda kowane ƙananan kusurwa, kawai foda HPMC kadan, ruwa. nan take zai narke.– Putty foda da turmi masana'antun amfani da wannan hanya.[Hydroxypropyl methyl cellulose (HPMC) da aka yi amfani da shi azaman wakili mai kauri da kuma mai riƙe da ruwa a cikin turmi foda.

4, yadda za a ƙayyade ingancin hydroxypropyl methyl cellulose (HPMC) sauki da kuma ilhama?

Amsa: (1) fari: ko da yake fari ba zai iya tantance ko HPMC yana da kyau ba, kuma idan an ƙara shi a cikin tsarin samar da fata, zai shafi ingancinsa.Duk da haka, yawancin samfurori masu kyau suna da farin ciki mai kyau.(2) fineness :HPMC fineness ne kullum 80 raga da 100 raga,120 manufa kasa, Hebei HPMC mafi yawa raga 80, mafi kyaun da fineness, kullum magana, mafi kyau.(3) watsawa: hydroxypropyl methyl cellulose (HPMC) a cikin ruwa, samuwar colloid mai haske, ganin watsawa, mafi girma da watsawa shine mafi kyau, abubuwan da ba a iya narkewa a cikin ƙasa.Yawan watsa reactor a tsaye yana da kyau gabaɗaya, kuma na kwancen reactor ya fi muni, amma ba yana nufin ingancin samar da na'urar da ke samar da wutar lantarki ya fi na kwancen reactor ba.Akwai dalilai da yawa don ƙayyade ingancin samfurin.(4) Matsakaicin: mafi girman rabo, mafi nauyi mafi kyau.Fiye da babba, saboda a cikin tushen abun ciki na hydroxyl propyl yana da girma da yawa, abun ciki na hydroxyl propyl yana da girma, yana kare ruwa don son mafi kyau.

5, hydroxypropyl methyl cellulose (HPMC) danko ya fi dacewa?

– Amsa: a gundura da yaro foda ne ok fiye da dubu 100, wasu tsayi da ake bukata a turmi, so 150 dubu ikon amfani.Bugu da ƙari, HPMC ita ce mafi mahimmancin rawar riƙe ruwa, sannan taurin kai.A cikin putty foda, idan dai ruwa mai kyau yana da kyau, danko yana da ƙananan (7-80 dubu), kuma yana yiwuwa, ba shakka, danko ya fi girma, haɗin ruwan dangi ya fi kyau, lokacin da danko ya fi girma. 100 dubu, danko na riƙewar ruwa ba shi da yawa.

6, hydroxypropyl methyl cellulose (HPMC) menene manyan alamun fasaha?.

Amsa: abun ciki na Hydroxypropyl da danko, yawancin masu amfani suna kula da waɗannan alamomi guda biyu.Abun cikin hydroxypropyl yana da girma, riƙe ruwa gabaɗaya ya fi kyau.Danko, riƙewar ruwa, dangi (amma ba cikakke ba) kuma mafi kyau, kuma danko, turmi ciminti ya fi kyau a yi amfani da wasu.

7, hydroxypropyl methyl cellulose (HPMC) menene manyan albarkatun kasa?

Amsa: hydroxypropyl methyl cellulose (HPMC) main albarkatun kasa: mai ladabi auduga, chloromethane, propylene oxide, sauran albarkatun kasa, kwamfutar hannu alkali, acid, toluene, isopropyl barasa da sauransu.

8, HPMC a cikin aikace-aikace na putty foda, babban rawa, ko abin da ya faru na sunadarai?

Amsa :HPMC a putty foda, thickening, ruwa da gina uku matsayin.Kauri: cellulose na iya yin kauri zuwa dakatarwa, ta yadda maganin ya kasance iri ɗaya sama da ƙasa rawar hana kwararar rataye.Riƙewar ruwa: sanya foda ta bushe a hankali, ƙarar alli mai launin toka a cikin aikin amsawar ruwa.Gina: lubrication cellulose, na iya yin putty foda yana da kyakkyawan gini.HPMC baya shiga cikin kowane halayen sinadarai, amma yana taka rawa ne kawai.Foda da ruwa, a jikin bango, wani nau'in sinadari ne, saboda haɓakar sabbin abubuwa, bangon foda ɗin da aka saukar daga bangon, a niƙa shi da foda, sannan a yi amfani da shi, ba kyau ba, saboda ya sami sabon abu. (calcium carbonate).Babban abun da ke ciki na foda mai launin toka shine cakuda Ca (OH) 2, CaO da ƙaramin adadin CaCO3, CaO + H2O = Ca (OH) 2 - Ca (OH) 2 + CO2 = CaCO3↓ + H2O Grey calcium a cikin ruwa da iska karkashin aikin CO2, calcium carbonate, da HPMC kawai ruwa, taimaka launin toka alli mafi alhẽri dauki, da kansa bai shiga wani dauki.

9.HPMC wadanda ba ionic cellulose ether, don haka abin da ba ionic?

A: Gabaɗaya magana, waɗanda ba ions abubuwa ne waɗanda ba sa ionize cikin ruwa.Ionization shine rarrabuwar electrolyte zuwa ions masu caji kyauta a cikin wani ƙayyadadden ƙarfi, kamar ruwa ko barasa.Alal misali, gishirin da muke ci kowace rana - sodium chloride (NaCl) narke cikin ruwa da ionizes don samar da sodium ions (Na +) mai motsi kyauta tare da caji mai kyau da ions chloride (Cl) tare da caji mara kyau.Wato, HPMC a cikin ruwa baya rabuwa cikin ions masu caji, amma yana wanzuwa azaman kwayoyin halitta.

10. Menene ke da alaƙa da zazzabi na gel na hydroxypropyl methyl cellulose?

- Amsa: Gel zafin jiki na HPMC yana da alaƙa da abun ciki na methoxyl, ƙananan abun ciki na methoxyl ↓, mafi girman yawan zafin jiki na gel.

11, putty foda foda da HPMC babu dangantaka?

Amsa: putty powder drop foda yafi kuma ash quality calcium yana da dangantaka mai girma, kuma HPMC ba shi da babban dangantaka.Ƙananan abun ciki na calcium na calcium mai launin toka da rashin daidaituwa na CaO da Ca (OH) 2 a cikin calcium mai launin toka zai haifar da faduwa foda.Idan akwai ɗan dangantaka da HPMC, to, riƙewar ruwa na HPMC ba shi da kyau, kuma zai haifar da foda.

12, hydroxypropyl methyl cellulose ruwan sanyi mai narkewa da zafi mai narkewa a cikin tsarin samar da menene bambanci?

– Amsa: HPMC ruwan sanyi nan take bayani irin ne bayan glioxal surface jiyya, sa a cikin ruwan sanyi da sauri tarwatsa, amma ba da gaske narkar da, danko sama, an narkar da.Ba a yi amfani da nau'in thermosoluble saman da glioxal ba.Adadin glioxal yana da girma, tarwatsawa yana da sauri, amma danko yana jinkirin, adadin yana da ƙananan, akasin haka.

13, hydroxypropyl methyl cellulose (HPMC) wari yaya yake?

– Amsa: HPMC da aka samar ta hanyar ƙarfi an yi shi da toluene da barasa isopropyl.Idan wankewar ba ta da kyau sosai, za a sami ɗanɗano kaɗan.

14, daban-daban amfani, yadda za a zabi daidai hydroxypropyl methyl cellulose (HPMC)?

– amsa: zama gundura da aikace-aikace na yaro foda: da ake bukata shi ne m, danko 100 dubu, ok, yana da muhimmanci don kare ruwa ya kasance kusa da.Turmi aikace-aikace: mafi girma bukatun, high danko bukatun, 150 dubu zama mafi alhẽri.Aikace-aikacen manna: buƙatar samfuran nan take, babban danko.

15. Menene sunan farko na hydroxypropyl methyl cellulose?

– AMSA: Hydroxypropyl Methyl Cellulose, An Gagare shi da HPMC ko MHPC, ko Hydroxypropyl Methyl Cellulose;Cellulose hydroxypropyl methyl ether;Hypromellose, Cellulose, 2-hydroxypropyl methyl cellulose ether.

16.HPMC a cikin aikace-aikace na putty foda, putty foda kumfa menene dalili?

Amsa: HPMC a putty foda, thickening, ruwa da gina uku ayyuka.Rashin shiga cikin kowane martani.Dalilan kumfa: 1, yawan ruwa.2, kasa bai bushe ba, a saman saman da ake gogewa, kuma yana da sauƙin blister.

17. Menene bambanci tsakanin HPMC da MC?

Amsa: MC shine methyl cellulose, wanda aka yi da cellulose ether ta hanyar jerin halayen tare da methane chloride a matsayin wakili na etherifying bayan an yi amfani da auduga mai ladabi tare da alkali.Gabaɗaya, matakin maye gurbin shine 1.6 ~ 2.0, kuma solubility ya bambanta da matakin maye gurbin.Ya kasance na nonionic cellulose ether.

(1) Riƙewar ruwa na methyl cellulose ya dogara da adadin adadinsa, danko, fineness barbashi da rushewar kudi.Gabaɗaya ƙara babban adadin, ƙarami fineness, danko, yawan riƙe ruwa yana da girma.Daga cikin su, adadin ƙari yana da tasiri mafi girma a kan riƙewar ruwa, kuma danko bai dace da riƙewar ruwa ba.A rushe kudi yafi dogara a kan surface gyara digiri da barbashi fineness na cellulose barbashi.A cikin abubuwan da ke sama da yawa ethers cellulose, methyl cellulose da hydroxypropyl methyl cellulose yawan riƙe ruwa ya fi girma.

(2) Methyl cellulose yana narkewa a cikin ruwan sanyi, wanda ke da wuyar narkewa a cikin ruwan zafi.Maganin ruwan sa yana da ƙarfi sosai a cikin pH = 3 ~ 12.Yana da kyau dacewa da sitaci, guanidine danko da yawa surfactants.Gelation yana faruwa lokacin da yawan zafin jiki ya kai gelation.

(3) Canjin zafin jiki zai yi tasiri sosai akan adadin riƙe ruwa na methyl cellulose.Gabaɗaya, mafi girman zafin jiki, mafi munin riƙewar ruwa.Idan yawan zafin jiki na turmi ya wuce 40 ℃, riƙewar ruwa na methyl cellulose zai zama mafi muni, wanda ke tasiri sosai ga constructability na turmi.

(4) Methyl cellulose yana da tasiri a bayyane akan constructability da adhesion na turmi."Adhesion" a nan yana nufin mannewa da ma'aikaci ya ji tsakanin kayan aiki da bangon bango, wato juriya na juriya na turmi.Adhesion yana da girma, juriyar juriya na turmi yana da girma, ƙarfin da ma'aikata ke bukata wajen amfani da shi kuma yana da girma, kuma ginin turmi ba shi da kyau.A cikin samfuran ether cellulose, mannewar methyl cellulose yana a matsakaicin matakin.

HPMC don hydroxypropyl methyl cellulose, an mai ladabi da auduga bayan alkali magani, tare da propylene oxide da chloromethane a matsayin etherifying wakili, ta hanyar jerin halayen da Ya sanya daga wadanda ba ionic cellulose gauraye ether.Matsakaicin maye gaba ɗaya shine 1.2 ~ 2.0.Kaddarorinsa sun bambanta da rabon methoxy da abun ciki na hydroxypropyl.

(1) Hydroxypropyl methyl cellulose yana da sauƙin narkewa a cikin ruwan sanyi, wanda ke da wuyar narkewa a cikin ruwan zafi.Duk da haka, zafinsa na gelation a cikin ruwan zafi a fili ya fi na methyl cellulose girma.Solubility na methyl cellulose a cikin ruwan sanyi kuma an inganta sosai.

(2) Dankin hydroxypropyl methyl cellulose yana da alaƙa da nauyin kwayoyin halitta, kuma mafi girman nauyin kwayoyin halitta, mafi girman danko.Hakanan yanayin zafi yana shafar danko.Danko yana raguwa yayin da zafin jiki ya karu.Amma tasirinsa na danko yana da ƙasa da na methyl cellulose.Maganin yana da ƙarfi lokacin da aka adana shi a cikin zafin jiki.

(3) Hydroxypropyl methyl cellulose ya tsaya tsayin daka ga acid da tushe, kuma maganin sa na ruwa yana da ƙarfi sosai a cikin kewayon pH = 2 ~ 12.Caustic soda da ruwan lemun tsami suna da ɗan tasiri akan kaddarorin sa, amma alkali na iya haɓaka ƙimar narkarwar sa kuma inganta danko.Hydroxypropyl methyl cellulose yana da kwanciyar hankali ga gishiri na gabaɗaya, amma lokacin da maida hankali na maganin gishiri ya yi girma, dankon hydroxypropyl methyl cellulose bayani yana ƙara ƙaruwa.

(4) Riƙewar ruwa na hydroxypropyl methyl cellulose ya dogara da adadinsa da ɗankowar sa, kuma yawan riƙewar ruwa na hydroxypropyl methyl cellulose ya fi na methyl cellulose girma a daidai sashi.

(5) Hydroxypropyl methyl cellulose za a iya gauraye da ruwa-mai narkewa polymer mahadi ya zama uniform, mafi girma danko bayani.Kamar polyvinyl barasa, sitaci ether, kayan lambu manne da sauransu.

(6) Mannewar hydroxypropyl methyl cellulose zuwa ginin turmi ya fi na methyl cellulose girma.

(7) Hydroxypropyl methyl cellulose yana da mafi kyawun juriya na enzyme fiye da methyl cellulose, kuma yuwuwar lalatawar enzyme ɗinta yana ƙasa da na methyl cellulose.

18. Menene ya kamata a kula da shi a cikin aikace-aikacen aikace-aikace na dangantaka tsakanin danko da zafin jiki na HPMC?

Amsa: Dankowar HPMC ya bambanta da yanayin zafi, wato, danko yana ƙaruwa tare da raguwar zafin jiki.Lokacin da muke magana game da danko na samfur, muna magana ne game da danko na 2% na samfurin a cikin ruwa a digiri 20 na ma'aunin celcius.

A cikin aikace-aikacen aikace-aikacen, a cikin yankunan da ke da manyan bambance-bambancen zafin jiki tsakanin rani da hunturu, ya kamata a lura cewa an bada shawarar yin amfani da ƙananan danko a cikin hunturu, wanda ya fi dacewa don ginawa.In ba haka ba, lokacin da zafin jiki ya yi ƙasa, danko na cellulose zai karu, kuma lokacin da zazzagewa, jin zai yi nauyi.

Matsakaici danko: 75000-100000 galibi ana amfani dashi don putty.

Dalili: Kyakkyawan riƙe ruwa.

Babban danko: 150000-200000 ana amfani dashi galibi don polystyrene barbashi rufi turmi roba foda da vitrified beads rufi turmi.

Dalili: high danko, turmi ba sauki sauke, kwarara rataye, inganta yi.

Amma gabaɗaya magana, mafi girman danko, mafi kyawun riƙewar ruwa, masana'antun busassun busassun da yawa, la'akari da farashin, suna amfani da cellulose matsakaici danko (75000-100000) don maye gurbin matsakaici da ƙananan danko (20000-40000) don rage adadin. na kari.