1. Menene babban amfani da cellulose?
Ana amfani da HPMC sosai a cikin kayan gini, sutura, resins na roba, yumbu, magunguna, abinci, yadi, noma, kayan kwalliya, taba da sauran masana'antu.Ana iya raba HPMC zuwa matakin masana'antu, darajar abinci da kuma darajar magunguna bisa ga aikace-aikacen.
2. Akwai nau'ikan cellulose da yawa, kuma menene bambancin amfanin su?
Ana iya raba HPMC zuwa nau'in nan take (sunan suffix "S") da nau'in narkewa mai zafi.Irin samfuran nan take suna watsewa da sauri cikin ruwan sanyi kuma su ɓace cikin ruwa.A wannan lokacin, ruwan ba shi da danko saboda HPMC kawai ana tarwatsewa cikin ruwa ba tare da narkar da gaske ba.Game da (hargitsi) na minti 2, dankon ruwa a hankali yana ƙaruwa, yana samar da colloid fari mai haske.Abubuwan da aka narke mai zafi, lokacin da suka fuskanci 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 (bisa ga zazzabi na gel na samfurin), danƙon zai bayyana a hankali har sai ya zama colloid mai haske.
3. Menene hanyoyin narkar da cellulose?
1).Duk samfuran za a iya ƙarawa zuwa kayan ta hanyar bushe bushe;
2).Lokacin da yake buƙatar ƙara kai tsaye zuwa maganin ruwa na al'ada na zafin jiki, yana da kyau a yi amfani da nau'in watsawar ruwan sanyi.Yawancin lokaci yana ɗaukar mintuna 1-30 don yin kauri bayan ƙara (jigina da motsawa)
3).Ana fara motsawa na yau da kullun kuma an tarwatsa su da ruwan zafi, sannan a narkar da su a cikin ruwan sanyi bayan motsawa da sanyaya;
4).Idan agglomeration ya faru a lokacin rushewa, shi ne saboda motsawar bai isa ba ko kuma an ƙara samfurin yau da kullum zuwa ruwan sanyi.A wannan lokacin, ya kamata a motsa shi da sauri.da
5).Idan an haifar da kumfa a lokacin rushewa, za a iya barin su su tsaya na tsawon sa'o'i 2-12 (ƙayyadaddun lokacin da aka ƙayyade ta daidaitattun maganin) ko cire su ta hanyar vacuuming, pressurizing, da dai sauransu, kuma adadin da ya dace na defoaming wakili zai iya kuma a kara.da
4. Yadda za a yi hukunci da ingancin cellulose sauƙi da fahimta?
1) Fari, duk da cewa farar fata ba zai iya tantance ko HPMC yana da sauƙin amfani ba, kuma idan an ƙara abubuwan fata a cikin tsarin samarwa, zai shafi ingancinsa, amma yawancin samfuran masu kyau suna da kyaun fari.
2) Lalacewa: Mafi kyawun HPMC gabaɗaya yana da raga 80 da raga 100, raga 120 ya ragu, mafi kyawun mafi kyawun mafi kyau.
3) Canjin haske: Bayan an sanya HPMC a cikin ruwa don samar da colloid mai haske, duba haskensa.Mafi girman isar da haske, mafi kyau, yana nuna cewa akwai ƙarancin insoluble a cikinsa, kuma watsa na'urorin a tsaye yana da kyau gabaɗaya., A kwance reactor ya fi muni, amma ba yana nufin cewa ingancin na'ura mai ba da hanya tsakanin hanyoyin sadarwa ya fi na na'ura mai mahimmanci, kuma akwai dalilai da yawa don ƙayyade ingancin samfurin.
4) Nauyi na musamman: Girman ƙayyadaddun nauyi, mafi nauyi mafi kyau.Mafi girman ƙayyadaddun nauyi, mafi girman abun ciki na hydroxypropyl a cikin samfurin.Mafi girman abun ciki na hydroxypropyl, mafi kyawun riƙewar ruwa.
5. Menene adadin cellulose a cikin foda mai sawa?
Adadin HPMC da aka yi amfani da shi a aikace-aikace masu amfani yana shafar yanayin yanayi, zafin jiki, ingancin ash ash na gida, ma'anar putty foda da ingancin da abokan ciniki ke buƙata.Akwai bambance-bambance a wurare daban-daban, gabaɗaya magana, yana tsakanin 4-5 kg.
6. Menene madaidaicin danko na cellulose?
Gabaɗaya, 100,000 putty foda ya isa, kuma abin da ake buƙata a cikin turmi ya fi girma, kuma yana buƙatar 150,000 don sauƙin amfani.Bugu da ƙari, mafi mahimmancin aikin HPMC shine riƙe ruwa, wanda ya biyo baya tare da kauri.A cikin foda mai sanyaya, idan dai riƙewar ruwa yana da kyau kuma danko yana da ƙasa (7-8), kuma yana yiwuwa.Tabbas, mafi girman danko, mafi kyawun riƙewar ruwa.Lokacin da danko ya wuce 100,000, danko ba shi da wani tasiri akan riƙe ruwa.babba.
7. Menene manyan alamun fasaha na cellulose?
Hydroxypropyl abun ciki
Methyl abun ciki
danko
Ash
Asarar bushewa
8. Menene ainihin albarkatun cellulose?
Babban albarkatun kasa na HPMC: auduga mai ladabi, methyl chloride, propylene oxide, soda caustic ruwa, da dai sauransu.
9. Menene babban aikin aikace-aikace na cellulose a cikin putty foda?Shin akwai wani maganin sinadari?
Daga cikin foda na putty, yana taka rawar uku na thickening, riƙe ruwa da ginawa.Yin kauri, cellulose na iya yin kauri don dakatarwa, kiyaye bayani 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.
10. Cellulose shine ether cellulose maras ionic, don haka menene wanda ba na ionic ba?
A cikin sharuddan layman, abubuwan da ba su da ƙarfi ba sa shiga cikin halayen sinadarai.
CMC (carboxymethyl cellulose) shine cellulose na cationic, don haka zai zama ɗan wake idan ya ci karo da calcium ash.
11 Menene zafin gel na cellulose da ke da alaƙa?
Zazzabi na gel na HPMC yana da alaƙa da abun ciki na methoxy, ƙananan abun ciki na methoxy, mafi girman zafin gel ɗin.
12. Shin akwai wata dangantaka tsakanin asarar foda na putty foda da cellulose?
Akwai dangantaka!!!Wato, rashin kula da ruwa na HPMC zai haifar da asarar foda (abin da ke cikin kayan kamar ash, calcium mai nauyi, da siminti, zafin gini, da yanayin bango duk za su shafi).
13. Menene bambanci tsakanin ruwan sanyi nan take da cellulose mai zafi mai narkewa a cikin tsarin samarwa?
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 da glioxal.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. Me yasa cellulose ke da wari?
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.(Sake dawowa shine maɓalli na tsari na wari)
15. Yadda za a zabi cellulose mai dacewa don dalilai daban-daban?
Putty foda: yana buƙatar babban riƙewar ruwa, sauƙin ginawa mai kyau
Tumi na tushen siminti na yau da kullun: yana buƙatar riƙe ruwa mai yawa, juriya mai zafi, da danko nan take
Aikace-aikacen manne gini: samfuran nan take tare da babban danko.(gwajin daraja
Turmi Gypsum: babban riƙewar ruwa, matsakaici da ƙananan danko, haɓakar danko nan take
16. Menene wani suna ga cellulose?
Ana nufin HPMC ko MHPC wanda aka fi sani da hypromellose, cellulose hydroxypropyl methyl ether.
17. Aikace-aikacen cellulose a cikin foda, menene dalilin kumfa a cikin foda mai sanyaya?
A cikin putty foda, HPMC tana taka rawar uku na kauri, riƙe ruwa da gini.Dalilan kumfa sune:
1. Ana kara ruwa da yawa.
2. Ƙarƙashin ƙasa bai bushe ba, kawai zazzage wani Layer a saman, kuma yana da sauƙi don kumfa.
18. Menene bambanci tsakanin cellulose da MC:
MC shine methyl cellulose, wanda aka yi da ether cellulose ta hanyar magance auduga mai ladabi tare da alkali, ta amfani da methane chloride a matsayin wakili na etherification, da kuma jurewa jerin halayen.Gabaɗaya, matakin maye gurbin shine 1.6-2.0, kuma solubility ya bambanta da digiri daban-daban na maye gurbin.Daban-daban, nasa ne na ether cellulose maras ionic.
(1) Riƙewar ruwa na methylcellulose ya dogara da adadin adadinsa, danko, fineness barbashi da rushewar kudi.Gabaɗaya, idan adadin ƙari yana da girma, ƙarancin ƙarancin ƙanƙara ne, kuma danko yana da girma, yawan riƙe ruwa yana da girma.Daga cikin su, ƙarin adadin yana da tasiri mafi girma akan yawan riƙe ruwa na ɗan adam.Dankin ba ya daidai da adadin riƙe ruwa.Adadin narkewa ya dogara ne akan saman ƙwayoyin cellulose.Degree na gyare-gyare da kuma barbashi fineness.Daga cikin nau'ikan ethers na cellulose da yawa na sama, yawan riƙe ruwa na methyl cellulose da Jinshuiqiao cellulose ya fi girma.
(2) Methylcellulose yana narkewa a cikin ruwan sanyi, kuma zai yi wuya a narke cikin ruwan zafi.Maganin ruwan sa yana da ƙarfi sosai a cikin kewayon ph=3-12.Yana da kyau dacewa tare da sitaci, da dai sauransu da yawa surfactants.Lokacin da yawan zafin jiki Lokacin da aka kai zafin gelation, gelation zai faru.
(3) Canje-canje a cikin zafin jiki zai yi tasiri sosai akan ƙimar riƙe ruwa na methyl cellulose.Gabaɗaya, mafi girman zafin jiki, mafi munin ƙimar riƙe ruwa.Idan yawan zafin jiki na turmi ya wuce digiri 40, za a rage yawan ruwa na methyl cellulose, wanda zai yi tasiri sosai wajen gina turmi.
(4) Methyl cellulose yana da tasiri mai mahimmanci akan ginin da mannewa na turmi.Adhesion a nan yana nufin ƙarfin manne da ake ji tsakanin kayan aikin ma'aikaci da katangar bango, wato juriyar juriyar turmi.Manne yana da girma, juriya na juriya na turmi yana da girma, kuma ƙarfin da ma'aikata ke bukata a cikin aikin da ake amfani da su yana da girma, kuma aikin ginin turmi ba shi da kyau.
Lokacin aikawa: Nuwamba-22-2022