Menene hanyoyin rushewar hydroxypropyl methylcellulose HPMC?

1. Menene hanyoyin rushewar hydroxypropyl methylcellulose HPMC?

Amsa: Hanyar narkar da ruwan zafi: Tun da HPMC ba ta narke cikin ruwan zafi, ana iya tarwatsa HPMC daidai gwargwado a cikin ruwan zafi a matakin farko, sannan kuma da sauri ya narke idan an sanyaya. Hanyoyi guda biyu na al'ada an bayyana su kamar haka:

1), ƙara 1/3 ko 2/3 na adadin da ake buƙata na ruwa a cikin akwati, kuma zafi shi zuwa 70 ° C, watsar da HPMC bisa ga hanyar 1), da kuma shirya slurry ruwan zafi; sa'an nan kuma ƙara sauran adadin ruwan sanyi zuwa ruwan zafi mai zafi, an sanyaya cakuda bayan ya motsa.

Yadda ake hada foda: sai a hada garin HPMC da sauran abubuwa masu yawa, sai a hada su sosai da mahautsini, sannan a zuba ruwa a narkar da shi, sai a narkar da HPMC a wannan lokaci ba tare da an yi takura ba, domin akwai HPMC kadan a cikin kowane kankanin. kusurwa Powder, zai narke nan da nan lokacin da aka haɗu da ruwa. ——Masu kera foda da turmi suna amfani da wannan hanyar. [Hydroxypropyl methylcellulose (HPMC) ana amfani dashi azaman mai kauri da mai riƙe da ruwa a cikin turmi foda na putty.

2) Sanya adadin ruwan zafi da ake buƙata a cikin akwati kuma yayi zafi zuwa kimanin 70 ° C. A hankali an ƙara hydroxypropyl methylcellulose a ƙarƙashin jinkirin motsawa, da farko HPMC ya yi iyo a saman ruwa, sannan a hankali ya samar da slurry, wanda aka sanyaya a ƙarƙashin motsawa.

2. Akwai nau'ikan hydroxypropyl methylcellulose HPMC da yawa. Menene bambancin amfanin su?

Amsa: Ana iya raba Hydroxypropyl methylcellulose HPMC zuwa nau'in nan take da nau'in rushewar zafi. Irin samfuran nan take suna watse cikin sauri cikin ruwan sanyi kuma su ɓace cikin ruwa. A wannan lokacin, ruwan ba shi da danko, saboda HPMC ana tarwatsewa ne kawai a cikin ruwa, babu ainihin narke. Kusan mintuna 2, dankowar ruwa a hankali yana ƙaruwa, yana samar da colloid mai haske. Abubuwan da aka narke mai zafi, lokacin da aka sadu da ruwan sanyi, suna iya watse da sauri cikin ruwan zafi kuma su ɓace cikin ruwan zafi. Lokacin da zafin jiki ya faɗi zuwa wani zafin jiki, danƙon zai bayyana a hankali har sai ya zama colloid mai haske. Za a iya amfani da nau'in zafi mai zafi a cikin foda da turmi kawai. A cikin manne ruwa da fenti, za a sami al'amuran tarukan kuma ba za a iya amfani da su ba. Nau'in nan take yana da fa'idar aikace-aikace. Ana iya amfani dashi a cikin foda da turmi, da manne ruwa da fenti, ba tare da wani contraindications ba.

3. Menene babban aikace-aikacen hydroxypropyl methylcellulose (HPMC)?

Amsa: Ana amfani da HPMC sosai a cikin kayan gini, kayan kwalliya, resins na roba, yumbu, magani, abinci, masaku, noma, kayan kwalliya, taba da sauran masana'antu. Ana iya raba HPMC zuwa: darajar gini, darajar abinci da kuma darajar magunguna bisa ga amfani. A halin yanzu, yawancin samfuran cikin gida sune darajar gini. A cikin aikin gine-gine, ana amfani da foda mai yawa da yawa, kimanin kashi 90% ana amfani da foda, sauran kuma ana amfani da turmi da manne.

4. Yadda za a yi hukunci da ingancin hydroxypropyl methylcellulose (HPMC) a sauƙaƙe da fahimta?

Amsa: (1) Takamaiman nauyi: Girman takamaiman nauyi, mafi nauyi mafi kyau. Rabon yana da girma, gabaɗaya saboda

(2) Fari: Ko da yake farar fata ba zai iya tantance ko HPMC yana da sauƙin amfani ba, kuma idan an ƙara abubuwan fata yayin aikin samarwa, zai shafi ingancinsa. Duk da haka, yawancin samfurori masu kyau suna da fari mai kyau.

(3) Lalacewa: Mafi kyawun HPMC gabaɗaya yana da raga 80 da raga 100, kuma raga 120 ya ragu. Yawancin HPMC da aka samar a Hebei raga 80 ne. Mafi kyawun fineness, mafi kyawun shi gabaɗaya.

(4) Canja wurin haske: sanya hydroxypropyl methylcellulose (HPMC) a cikin ruwa don samar da colloid mai haske, da kuma duba haskensa. Mafi girman watsa hasken, mafi kyau, yana nuna cewa akwai ƙananan insoluble a ciki. . Matsakaicin ma'aunin reactor gabaɗaya yana da kyau, kuma na na'urar a kwance ya fi muni, amma ba yana nufin cewa ingancin injin ɗin ya fi na na'urar da ke kwance ba, kuma akwai dalilai da yawa don tantance ingancin samfurin. . Abubuwan da ke cikin rukunin hydroxypropyl a ciki yana da girma, kuma abun ciki na ƙungiyar hydroxypropyl yana da girma, kuma riƙewar ruwa ya fi kyau.

5. Menene manyan alamun fasaha na hydroxypropyl methylcellulose (HPMC)?

Amsa: Abubuwan da ke cikin Hydroxypropyl da danko, yawancin masu amfani sun damu da waɗannan alamomi guda biyu. Wadanda ke da babban abun ciki na hydroxypropyl gabaɗaya suna da mafi kyawun riƙe ruwa. Babban danko, riƙewar ruwa, in mun gwada (maimakon

6. Menene madaidaicin danko na hydroxypropyl methylcellulose (HPMC)?

Amsa: Gabaɗaya yuan 100,000 Putty foda ne, kuma buƙatun turmi sun fi girma, kuma yana da sauƙin amfani da yuan 150,000. Bugu da ƙari, mafi mahimmancin aikin HPMC shine riƙe ruwa, wanda ya biyo baya tare da kauri. A cikin foda mai sakawa, idan dai ruwa yana da kyau kuma danko yana da ƙananan (70,000-80,000), yana yiwuwa kuma. Tabbas, mafi girman danko, mafi kyawun riƙewar ruwa. Lokacin da danko ya wuce 100,000, danko zai shafi riƙewar ruwa. Ba yawa kuma. Babu shakka) ya fi kyau, kuma danko ya fi girma, kuma yana da kyau a yi amfani da turmi siminti.

7. Menene manyan albarkatun kasa na hydroxypropyl methylcellulose (HPMC)?

Amsa: Babban albarkatun kasa na hydroxypropyl methylcellulose (HPMC): mai ladabi auduga, methyl chloride, propylene oxide, da sauran albarkatun kasa, caustic soda, acid, toluene, isopropanol, da dai sauransu.

8. Menene babban aikin aikace-aikacen HPMC a cikin foda, kuma yana faruwa ta hanyar sinadarai?

Amsa: A cikin putty foda, HPMC tana taka rawar uku na kauri, riƙe ruwa da gini. Kauri: Za a iya kauri cellulose don dakatarwa da kuma kiyaye maganin daidai sama da ƙasa, da tsayayya da sagging. Riƙewar ruwa: sanya foda ta bushe a hankali, kuma ta taimaka wa ash calcium don amsawa ƙarƙashin aikin ruwa. Gina: Cellulose yana da sakamako mai lubricating, wanda zai iya sa foda na putty yana da kyakkyawan gini. HPMC baya shiga cikin kowane halayen sinadarai, amma yana taka rawar taimako kawai. Ƙara ruwa a cikin foda da kuma sanya shi a kan bango wani nau'i ne na sinadaran, saboda an samar da sababbin abubuwa. Idan ka cire foda da ke jikin bango daga bangon, ka niƙa shi ya zama foda, ka sake amfani da shi, ba zai yi aiki ba saboda an samu sababbin abubuwa (calcium carbonate). ) kuma. Babban abubuwan da ke cikin ash calcium foda sune: cakuda Ca (OH) 2, CaO da karamin adadin CaCO3, CaO+H2O=Ca(OH)2-Ca(OH)2+CO2=CaCO3↓+H2O Ash calcium yana cikin ruwa da iska Karkashin aikin CO2, ana samar da sinadarin calcium carbonate, yayin da HPMC ke rike da ruwa kawai, yana taimakawa mafi kyawun dauki na ash calcium, kuma baya shiga cikin kowane irin dauki da kansa.

9. HPMC shine ether cellulose maras ionic, don haka menene ba ionic ba?

Amsa: A ma'anar liman, rashin ion abu ne da ba zai yuwu a cikin ruwa ba. Ionization yana nufin tsarin da ake rarraba electrolyte zuwa ions da aka caje wanda zai iya motsawa cikin yardar kaina a cikin wani ƙayyadadden ƙarfi (kamar ruwa, barasa). Misali, sodium chloride (NaCl), gishirin da muke ci kowace rana, yana narkar da ruwa da ionizes don samar da ions sodium ions (Na+) masu motsi da yardar rai da kuma chloride ions (Cl) waɗanda aka caje su. Wato lokacin da aka sanya HPMC a cikin ruwa, ba zai rabu da ions da aka caje ba, amma ya kasance a cikin nau'in kwayoyin halitta.

10. Shin akwai wata dangantaka tsakanin digo na putty foda da HPMC?

Amsa: Asarar foda na putty foda yana da alaƙa da ingancin ash calcium, kuma ba shi da alaƙa da HPMC. Ƙananan abun ciki na calcium mai launin toka mai launin toka da daidaitaccen rabo na CaO da Ca (OH) 2 a cikin launin toka zai haifar da asarar foda. Idan yana da wani abu da HPMC, to, idan HPMC yana da rashin ruwa mai kyau, zai haifar da asarar foda.

11. Menene zafin gel na hydroxypropyl methylcellulose da ke da alaƙa?

Amsa: Gel zafin jiki na HPMC yana da alaƙa da abun ciki na methoxy, ƙananan abin da ke cikin methoxy↓, mafi girman zazzabin gel.

12. Yadda za a zabi hydroxypropyl methylcellulose (HPMC) mai dacewa don dalilai daban-daban?

Amsa: Aikace-aikace na putty foda: bukatun suna da ƙananan ƙananan, kuma danko shine 100,000, wanda ya isa. Muhimmin abu shine kiyaye ruwa da kyau. Aikace-aikace na turmi: mafi girma bukatun, high danko, 150,000 ne mafi alhẽri. Aikace-aikacen manne: ana buƙatar samfuran nan take tare da babban danko.

13. Menene bambanci tsakanin nau'in ruwan sanyi mai sanyi da nau'in zafi mai narkewa na hydroxypropyl methylcellulose a cikin tsarin samarwa?

Amsa: Nau'in ruwan sanyi nan take na HPMC ana yi masa magani da glioxal, kuma yana watsewa da sauri cikin ruwan sanyi, amma ba ya narke da gaske. Yana narkewa ne kawai lokacin da danko ya karu. Nau'in narke mai zafi ba a yi masa magani tare da glycoxal. Idan adadin glioxal yana da girma, tarwatsawa zai yi sauri, amma danko zai karu a hankali, kuma idan adadin ya yi kadan, akasin haka zai zama gaskiya.

14. Menene kamshin hydroxypropyl methylcellulose (HPMC)?

Amsa: The HPMC samar da sauran ƙarfi hanya amfani da toluene da isopropanol a matsayin kaushi. Idan wankan bai yi kyau sosai ba, za a sami ɗan ƙamshi.

15. Menene wani suna na hydroxypropyl methylcellulose?

Amsa: Hydroxypropyl Methyl Cellulose, Turanci: Hydroxypropyl Methyl Cellulose Abbreviation: HPMC ko MHPC Alias: Hypromellose; Cellulose hydroxypropyl methyl ether; Hypromellose, Cellulose, 2-hydroxypropyl methyl cellulose ether. Cellulose hydroxypropyl methyl ether Hyprolose.

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

Amsa: Dankowar HPMC ya yi daidai da yanayin zafi, wato, danko yana ƙaruwa yayin da zafin jiki ya ragu. Dankowar samfurin da muke magana akai yana nufin sakamakon gwajin 2% na maganin ruwa a zazzabi na digiri 20 na ma'aunin celcius.

A cikin aikace-aikace masu amfani, ya kamata a lura cewa a cikin yankunan da ke da manyan bambance-bambancen zafin jiki tsakanin rani da hunturu, ana 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 jin daɗin hannun zai yi nauyi lokacin da ake gogewa. Matsakaici danko: 75000-100000 Anfi amfani dashi don putty. Dalili: kyakkyawan tanadin ruwa. High danko: 150000-200000 Yafi amfani da polystyrene barbashi thermal rufi turmi manne foda da vitrified microbead thermal insulation turmi. Dalili: babban danko, turmi ba shi da sauƙin sauke, rataye, da inganta gini.

17. Aikace-aikacen HPMC a cikin foda, menene dalilin kumfa a cikin foda?

Amsa: A cikin putty foda, HPMC tana taka rawar uku na kauri, riƙe ruwa da gini. Kada ku shiga cikin kowane hali. Dalilan kumfa: 1. Sanya ruwa da yawa. 2. Ƙarƙashin ƙasa bai bushe ba, kawai zazzage wani Layer a saman, kuma yana da sauƙi don kumfa.