Maganin HPMC

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

Amsa:HPMCAna amfani da shi sosai a kayan gini, shafa, resin roba, yumbu, magani, abinci, yadi, noma, kayan kwalliya, taba da sauran masana'antu. Ana iya raba HPMC zuwa: matakin gini, matakin abinci da matakin likita bisa ga amfani. A halin yanzu, galibi matakin gini ne na gida, a matakin gini, adadin foda putty yana da yawa, kusan kashi 90% ana amfani da shi don yin foda putty, sauran kuma ana amfani da shi don yin turmi da manne na siminti.

2, hydroxypropyl methyl cellulose (HPMC) an raba shi zuwa nau'i daban-daban, menene bambanci tsakanin amfani da shi?

Amsa: Ana iya raba HPMC zuwa nan take da kuma zafi mai narkewa, kayayyakin nan take, a cikin ruwan sanyi da sauri, sun watse, sun ɓace a cikin ruwa, a wannan lokacin ruwan ba shi da danko, domin HPMC kawai yana warwatse a cikin ruwa, babu narkewar gaske. Kimanin mintuna 2, dankowar ruwan yana ƙaruwa a hankali, yana samar da colloid mai haske. Kayayyakin da ke narkewa a cikin ruwan sanyi, suna narkewa cikin sauri, suna ɓacewa cikin ruwan zafi, har sai zafin ya faɗi zuwa wani zafin jiki, danko a hankali yana bayyana, har sai samuwar colloid mai haske mai haske. Ana iya amfani da nau'in mai narkewa a cikin zafi kawai a cikin foda da turmi, a cikin manne da shafi na ruwa, yana iya bayyana wani abu na haɗuwa, ba za a iya amfani da shi ba. Samfurin narkewa nan take, iyakokin aikace-aikace kaɗan ne, a cikin a gaji da foda da turmi, kuma a cikin manne da shafi na ruwa, duk ana iya amfani da su, ba su da abin da aka haramta.

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

– amsa: hanyar narkewar ruwan zafi: saboda HPMC ba ya narkewa a cikin ruwan zafi, don haka HPMC da wuri za a iya watsa shi daidai a cikin ruwan zafi, sannan a narke da sauri lokacin sanyaya, an bayyana hanyoyi guda biyu na yau da kullun kamar haka:

1) A cika kwandon da ruwan zafi gwargwadon yadda ake buƙata sannan a dumama shi zuwa kimanin digiri 70 na Celsius. Ana ƙara sinadarin Hydroxypropyl methyl cellulose a hankali a hankali ana juyawa, kuma HPMC yana shawagi a saman ruwa, sannan a hankali yana samar da wani abu mai laushi, wanda ake sanyaya shi a lokacin juyawa.

2) A zuba 1/3 ko 2/3 na adadin ruwan da ake buƙata a cikin akwati sannan a dumama shi zuwa 70℃. A watsa HPMC bisa ga hanya ta 1) don shirya ruwan zafi; Sannan a zuba sauran ruwan sanyi a cikin ruwan zafi sannan a sanyaya hadin bayan an gauraya.

Hanyar haɗa foda: Fulawar HPMC da adadi mai yawa na sauran sinadaran foda, a gauraya su gaba ɗaya da injin niƙa, sannan a ƙara ruwa don narkewa, a wannan lokacin HPMC na iya narkewa, ba tare da haɗa shi ba, saboda kowace ƙaramin kusurwa, ƙaramin foda na HPMC kawai, ruwa zai narke nan take. – Masana'antun foda na Putty da turmi suna amfani da wannan hanyar. [Hydroxypropyl methyl cellulose (HPMC) da ake amfani da shi azaman mai kauri da kuma wakilin riƙe ruwa a cikin turmi na putty.

4, ta yaya za a tantance ingancin hydroxypropyl methyl cellulose (HPMC) mai sauƙi da fahimta?

Amsa: (1) fari: kodayake fari ba zai iya tantance ko HPMC yana da kyau ba, kuma idan an ƙara shi a cikin tsarin samarwa, zai shafi ingancinsa. Duk da haka, yawancin kayayyaki masu kyau suna da farin launi mai kyau. (2) laushi: fineness na HPMC gabaɗaya shine raga 80 da raga 100, ƙasa da manufa 120, Hebei HPMC galibi shine raga 80, fineness na mafi kyau, gabaɗaya magana, mafi kyau. (3) watsawa: hydroxypropyl methyl cellulose (HPMC) cikin ruwa, samuwar colloid mai haske, duba watsawa, mafi girman watsawa shine mafi kyau, abubuwan da ba za su iya narkewa a ciki ƙasa da haka. watsawa na reactor na tsaye gabaɗaya yana da kyau, kuma na reactor na kwance ya fi muni, amma ba yana nufin cewa ingancin samar da reactor na tsaye ya fi na reactor na kwance kyau ba. Akwai dalilai da yawa don tantance ingancin samfurin. (4) Raba: mafi girman rabo, mafi nauyi mafi kyau. Fiye da babba, saboda yawan sinadarin hydroxyl propyl a cikinsa yawanci yana da yawa, yawan sinadarin hydroxyl propyl yana da yawa, don haka yana kare ruwa don ya fi kyau.

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

– amsa: a gaji da foda na yara ba shi da matsala, yawanci 100,000 ne, wasu sun fi tsayi fiye da abin da ake buƙata a turmi, suna son ikon amfani da 150,000. Bugu da ƙari, HPMC shine mafi mahimmancin aikin riƙe ruwa, sai kuma kauri. A cikin foda na putty, matuƙar riƙe ruwa yana da kyau, ɗanɗanon yana da ƙasa (7-80,000), yana yiwuwa kuma, ba shakka, ɗanɗanon ya fi girma, riƙe ruwa mai alaƙa ya fi kyau, lokacin da ɗanɗanon ya fi 100, ɗanɗanon riƙe ruwa ba shi da yawa.

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

Amsa: Yawan sinadarin Hydroxypropyl da danko, yawancin masu amfani suna damuwa da waɗannan alamomi guda biyu. Yawan sinadarin Hydroxypropyl yana da yawa, riƙon ruwa gabaɗaya ya fi kyau. Danko, riƙon ruwa, dangi (amma ba cikakke ba) shi ma ya fi kyau, kuma danko, turmi na siminti ya fi kyau a yi amfani da wasu.

7, hydroxypropyl methyl cellulose (HPMC) menene manyan kayan masarufi?

Amsa: hydroxypropyl methyl cellulose (HPMC) manyan kayan masarufi: auduga mai ladabi, chloromethane, propylene oxide, sauran kayan masarufi, alkali na kwamfutar hannu, acid, toluene, isopropyl alcohol da sauransu.

8, HPMC a cikin aikace-aikacen foda na putty, babban aikin, ko faruwar sinadarai?

Amsa: HPMC a cikin foda na putty, kauri, ruwa da gina ayyuka uku. Kauri: ana iya ƙara cellulose zuwa dakatarwa, don haka maganin ya kasance iri ɗaya sama da ƙasa rawar da hana kwarara ke ratayewa. Rike ruwa: sa foda na putty ya bushe a hankali, ƙarin sinadarin launin toka a cikin aikin amsawar ruwa. Ginawa: shafa mai a cikin cellulose, zai iya sa foda na putty ya yi kyau. HPMC ba ya shiga cikin duk wani martanin sinadarai, amma yana taka rawa kawai. Foda na putty da ruwa, a bango, amsawar sinadarai ne, saboda samar da sabbin abubuwa, bangon foda na putty ya sauko daga bango, ya niƙa ya zama foda, sannan a yi amfani da shi, ba shi da kyau, saboda ya samar da sabon abu (calcium carbonate). Babban sinadarin foda mai launin toka shine cakuda Ca(OH)2,CaO2 da ƙaramin adadin CaCO3,CaO+H2O=Ca(OH)2 — Ca(OH)2+CO2=CaCO3↓+H2O Calcium mai launin toka a cikin ruwa da iska ƙarƙashin tasirin CO2, calcium carbonate, da ruwa na HPMC kawai, yana taimakawa wajen samar da sinadarin toka mafi kyau, nasa bai shiga cikin wani martani ba.

9. HPMC cellulose ether mara ionic, to menene ba ionic ba?

A: Gabaɗaya, abubuwan da ba ion ba sune abubuwan da ba sa yin ion a cikin ruwa. Ionization shine rabuwar electrolyte zuwa ion masu caji masu motsi a cikin wani takamaiman sinadarin sinadarai, kamar ruwa ko barasa. Misali, gishirin da muke ci kowace rana - sodium chloride (NaCl) yana narkewa a cikin ruwa kuma yana yin ionizes don samar da ions masu motsi masu motsi (Na+) tare da caji mai kyau da ions masu chloride (Cl) tare da cajin mara kyau. Wato, HPMC a cikin ruwa baya rabuwa zuwa ions masu caji, amma yana wanzuwa azaman ƙwayoyin halitta.

10. Me ke da alaƙa da zafin gel na hydroxypropyl methyl cellulose?

– Amsa: Zafin gel naHPMCyana da alaƙa da yawan methoxyl, ƙarancin yawan methoxyl ↓, yawan zafin gel ɗin.

11, foda na putty foda da HPMC babu wata alaƙa?

Amsa: foda mai digo na putty da ingancin sinadarin calcium ash suna da babban alaƙa, kuma HPMC ba shi da babban alaƙa. Ƙarancin sinadarin calcium na sinadarin toka da kuma rashin daidaiton CaO da Ca(OH)2 a cikin sinadarin toka zai haifar da faɗuwar foda. Idan akwai ɗan alaƙa da HPMC, to riƙe ruwa na HPMC ba shi da kyau, shi ma zai haifar da foda.

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

– Amsa: Nau'in maganin ruwan sanyi na HPMC ana yin sa ne bayan an yi maganin glyoxal surface, a saka a cikin ruwan sanyi da sauri, amma ba a narke sosai ba, sai ya narke, sannan ya narke. Ba a yi wa nau'in da ke narkewa da zafi magani da glyoxal ba. Adadin glyoxal yana da yawa, watsawa yana da sauri, amma danko yana da jinkiri, adadin yana da ƙarami, akasin haka.

13, ƙamshin hydroxypropyl methyl cellulose (HPMC) ya ya yake?

– Amsa: Ana yin HPMC ta hanyar amfani da hanyar narkewar abinci daga toluene da isopropyl barasa. Idan wankewar ba ta da kyau sosai, za a sami ɗanɗanon da ya rage.

14, amfani daban-daban, yadda ake zaɓar hydroxypropyl methyl cellulose (HPMC) da ya dace?

– amsa: a gaji da amfani da foda na yara: buƙatar ta yi ƙasa, ɗanko 100, to, yana da mahimmanci a kare ruwa don ya kasance kusa. Aiwatar da turmi: buƙatu mafi girma, buƙatun ɗanko mai yawa, dubu 150 don ya fi kyau. Aiwatar da manne: buƙatar samfuran nan take, ɗanko mai yawa.

15. Menene sunan hydroxypropyl methyl cellulose?

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

16.HPMC wajen amfani da foda na putty, kumfa na putty mene ne dalili?

Amsa: HPMC a cikin foda mai kauri, kauri, ruwa da kuma gina ayyuka uku. Rashin shiga cikin wani abu. Dalilan kumfa: 1, ruwa da yawa. 2, ƙasan ba ta bushe ba, a saman layin gogewa, kuma tana da sauƙin kumbura.

17. Menene bambanci tsakanin HPMC da MC?

– Amsa: MC methyl cellulose ne, wanda aka yi shi da cellulose ether ta hanyar jerin halayen da methane chloride a matsayin wakili mai tsarkakewa bayan an yi wa auduga mai tsafta magani da alkali. Gabaɗaya, matakin maye gurbin shine 1.6~2.0, kuma narkewar ya bambanta dangane da matakin maye gurbin. Ya kasance na cellulose ether nonionic.

(1) Rike ruwa na methyl cellulose ya dogara da adadin ƙarinsa, danko, danko na barbashi da kuma yawan narkewar sa. Gabaɗaya ƙara yawansa, ƙaramin danko, danko, da kuma yawan riƙe ruwa yana da yawa. Daga cikinsu, adadin ƙarin yana da babban tasiri akan riƙe ruwa, kuma danko ba ya daidai da riƙe ruwa. Yawan narkewar ya dogara ne akan matakin gyaran saman da kuma ɗanko na barbashi na barbashi na cellulose. A cikin wasu ƙwayoyin cellulose da ke sama, adadin riƙe ruwa na methyl cellulose da hydroxypropyl methyl cellulose ya fi girma.

(2) Methyl cellulose yana narkewa a cikin ruwan sanyi, wanda yake da wuya a narke a cikin ruwan zafi. Maganin ruwansa yana da ƙarfi sosai a cikin pH = 3 ~ 12. Yana da kyakkyawan jituwa da sitaci, guanidine danko da kuma yawancin surfactants. Gelation yana faruwa ne lokacin da zafin jiki ya kai zafin gelation.

(3) Sauyin zafin jiki zai yi tasiri sosai ga yawan riƙe ruwa na methyl cellulose. Gabaɗaya, mafi girman zafin jiki, haka nan riƙon ruwa ke ƙara muni. Idan zafin turmi ya wuce 40℃, riƙon ruwa na methyl cellulose zai yi muni sosai, wanda hakan ke shafar yadda turmi ke aiki sosai.

(4) Methyl cellulose yana da tasiri a fili akan iya ginawa da mannewa na turmi. "Mannewa" a nan yana nufin mannewa da ma'aikacin ke ji tsakanin kayan aiki da abin da ke kan bango, wato juriyar yanke turmi. Mannewa yana da girma, juriyar yanke turmi yana da girma, ƙarfin da ma'aikata ke buƙata yayin amfani shi ma yana da girma, kuma gina turmi ba shi da kyau. A cikin samfuran cellulose ether, mannewar methyl cellulose yana da matsakaicin matsayi.

Ana tace HPMC don hydroxypropyl methyl cellulose ta hanyar auduga bayan an yi maganin alkali, tare da propylene oxide da chloromethane a matsayin wakili mai hana etherifying, ta hanyar jerin halayen kuma an yi su da gaurayen ether cellulose marasa ionic. Matsakaicin maye gurbin gabaɗaya shine 1.2 ~ 2.0. Halayensa sun bambanta dangane da rabon methoxy da hydroxypropyl.

(1) Hydroxypropyl methyl cellulose yana narkewa cikin sauƙi a cikin ruwan sanyi, wanda yake da wahalar narkewa a cikin ruwan zafi. Duk da haka, zafin gelation ɗinsa a cikin ruwan zafi a bayyane yake ya fi na methyl cellulose. An kuma inganta narkewar methyl cellulose a cikin ruwan sanyi sosai.

(2) Dankowar hydroxypropyl methyl cellulose yana da alaƙa da nauyin kwayoyin halittarsa, kuma mafi girman nauyin kwayoyin halittar, haka nan dankowar take. Zafin jiki kuma yana shafar dankowar. Dankowar yana raguwa yayin da zafin jiki ke ƙaruwa. Amma tasirin dankowar sa mai zafi ya yi ƙasa da na methyl cellulose. Maganin yana da ƙarfi idan aka adana shi a zafin jiki na ɗaki.

(3) Hydroxypropyl methyl cellulose yana da daidaito ga acid da tushe, kuma ruwan da ke cikinsa yana da daidaito sosai a cikin kewayon pH = 2 ~ 12. Soda mai kauri da ruwan lemun tsami ba su da tasiri sosai a kan halayensa, amma alkali na iya hanzarta saurin narkewarsa da inganta danko. Hydroxypropyl methyl cellulose yana da daidaito ga gishirin gabaɗaya, amma idan yawan ruwan gishiri ya yi yawa, danko na ruwan hydroxypropyl methyl cellulose yana ƙaruwa.

(4) Rikewar ruwa na hydroxypropyl methyl cellulose ya dogara da yawansa da kuma dankonsa, kuma yawan riƙewar ruwa na hydroxypropyl methyl cellulose ya fi na methyl cellulose a daidai wannan adadin.

(5) Ana iya haɗa sinadarin Hydroxypropyl methyl cellulose da sinadaran polymer masu narkewa cikin ruwa don su zama ruwan da ya dace, mai ƙarfi. Kamar polyvinyl alcohol, sitaci ether, manne na kayan lambu da sauransu.

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

(7) Hydroxypropyl methyl cellulose yana da juriya ga enzyme fiye da methyl cellulose, kuma yiwuwar lalacewar enzyme na mafita yana ƙasa da na methyl cellulose.

18. Me ya kamata a kula da shi wajen amfani da shi a aikace dangane da alaƙar da ke tsakanin danko da zafin jiki na HPMC?

Amsa: Danko naHPMCyana da daidaiton juye-juye da zafin jiki, wato, ɗanɗanon yana ƙaruwa tare da raguwar zafin jiki. Idan muka yi magana game da ɗanɗanon samfurin, muna magana ne game da ɗanɗanon kashi 2% na samfurin a cikin ruwa a digiri 20 na Celsius.

A aikace, a yankunan da ke da babban bambancin zafin jiki tsakanin lokacin rani da hunturu, ya kamata a lura cewa ana ba da shawarar a yi amfani da ƙarancin ɗanko a lokacin hunturu, wanda ya fi dacewa da gini. In ba haka ba, idan zafin ya yi ƙasa, ɗanko na cellulose zai ƙaru, kuma lokacin da ake gogewa, jin zai yi nauyi.

Matsakaicin danko: 75000-100000 galibi ana amfani da shi don putty.

Dalili: Kyakkyawan riƙe ruwa.

Babban danko: 150000-200000 galibi ana amfani da shi don rufin barbashi na polystyrene foda na roba da turmi mai rufin vitrified.

Dalili: yawan danko, turmi ba shi da sauƙin faɗuwa, yana rataye da ruwa, yana inganta ginin.

Amma gabaɗaya, idan aka yi la'akari da yawan danko, to, yawan riƙe ruwa zai fi kyau, don haka masana'antun turmi da yawa, idan aka yi la'akari da farashinsa, suna amfani da cellulose mai matsakaicin danko (75000-100000) don maye gurbin cellulose mai matsakaicin danko da ƙarancin danko (20000-40000) don rage yawan ƙarin.