1. Menene babban amfanin cellulose?
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 masana'antu, matakin abinci da kuma matakin magunguna bisa ga aikace-aikacen.
2. Akwai nau'ikan cellulose da dama, kuma menene bambance-bambancen amfaninsu?
Ana iya raba HPMC zuwa nau'in nan take (ƙarin suna "S") da nau'in narke mai zafi. Samfuran nan take suna watsuwa da sauri a cikin ruwan sanyi kuma suna ɓacewa cikin ruwa. A wannan lokacin, ruwan ba shi da ɗanko saboda HPMC yana warwatse ne kawai a cikin ruwa ba tare da narkewa na gaske ba. Kimanin (yana juyawa) na tsawon mintuna 2, ɗanko na ruwan yana ƙaruwa a hankali, yana samar da farin ɗanko mai haske. Samfuran da ke narkewa da zafi, lokacin da suka haɗu da ruwan sanyi, suna iya watsuwa da sauri a cikin ruwan zafi kuma suna ɓacewa a cikin ruwan zafi. Lokacin da zafin jiki ya faɗi zuwa wani zafin jiki (gwargwadon zafin gel na samfurin), ɗanko zai bayyana a hankali har sai ya samar da colloid mai haske mai haske.
3. Waɗanne hanyoyi ne ake narkar da cellulose?
1). Ana iya ƙara dukkan samfura zuwa kayan ta hanyar haɗa busasshiyar abu;
2) Idan ana buƙatar a ƙara shi kai tsaye a cikin ruwan da aka saba amfani da shi, ya fi kyau a yi amfani da nau'in watsa ruwan sanyi. Yawanci yana ɗaukar mintuna 1-30 kafin ya yi kauri bayan an ƙara (a juya a juya)
3) Da farko ana jujjuya samfuran yau da kullun a kuma watsa su da ruwan zafi, sannan a narkar da su a cikin ruwan sanyi bayan an juya su kuma a sanyaya su;
4) Idan haɗuwa ta faru yayin narkewa, to saboda juyawar ba ta isa ba ko kuma an ƙara samfurin da aka saba kai tsaye a cikin ruwan sanyi. A wannan lokacin, ya kamata a juya shi da sauri.
5). Idan an samar da kumfa yayin narkewa, ana iya barin su su tsaya na tsawon awanni 2-12 (lokacin yana ƙayyade takamammen daidaiton maganin) ko kuma a cire shi ta hanyar feshi, matsi, da sauransu, kuma ana iya ƙara adadin sinadarin da ke lalata shi.
4. Ta yaya za a tantance ingancin cellulose cikin sauƙi da fahimta?
1) Fari, kodayake fari ba zai iya tantance ko HPMC yana da sauƙin amfani ba, kuma idan aka ƙara sinadaran yin fari a cikin tsarin samarwa, zai shafi ingancinsa, amma yawancin samfuran masu kyau suna da kyakkyawan fari.
2) Tsantsar Siffa: Tsantsar SiffaHPMCGalibi yana da raga 80 da raga 100, raga 120 ya yi ƙasa da haka, mafi ƙanƙanta mafi ƙanƙanta mafi kyau.
3) Watsa haske: Bayan an sanya HPMC a cikin ruwa don samar da colloid mai haske, duba yadda hasken yake watsawa. Girman watsa haske, mafi kyau, yana nuna cewa akwai ƙarancin narkewa a cikinsa, kuma watsawar masu amsawa a tsaye gabaɗaya yana da kyau. , Mai amsawa a kwance ya fi muni, amma ba yana nufin cewa ingancin mai amsawa a tsaye ya fi na mai amsawa a kwance kyau ba, kuma akwai dalilai da yawa da ke tantance ingancin samfurin.
4) Nauyin nauyi na musamman: Girman nauyi na musamman, nauyi mafi kyau. Girman nauyi na musamman, yawan sinadarin hydroxypropyl a cikin samfurin. Girman abun ciki na hydroxypropyl, yawan riƙe ruwa mafi kyau.
5. Nawa ne adadin cellulose a cikin foda putty?
Yawan HPMC da ake amfani da shi a aikace yana shafar yanayi, zafin jiki, ingancin sinadarin calcium na gida, dabarar foda putty da ingancin da abokan ciniki ke buƙata. Akwai bambance-bambance a wurare daban-daban, gabaɗaya, yana tsakanin kilogiram 4-5.
6. Menene dacewar danko na cellulose?
Gabaɗaya, foda mai kauri 100,000 ya isa, kuma buƙatar turmi ya fi girma, kuma yana buƙatar 150,000 don ya zama mai sauƙin amfani. Bugu da ƙari, mafi mahimmancin aikin HPMC shine riƙe ruwa, sannan kauri. A cikin foda mai kauri, matuƙar riƙe ruwa yana da kyau kuma ɗanɗanon yana da ƙasa (7-8), haka nan yana yiwuwa. Tabbas, mafi girman ɗanɗanon, mafi kyawun riƙe ruwa. Lokacin da ɗanɗanon ya wuce 100,000, ɗanɗanon ba shi da tasiri ga riƙe ruwa. babba.
7. Menene manyan alamun fasaha na cellulose?
Abubuwan da ke cikin Hydroxypropyl
Yawan sinadarin methyl
danko
Toka
Asara idan aka busar da ita
8. Menene manyan kayan da ake amfani da su wajen samar da cellulose?
Babban kayan albarkatun HPMC: auduga mai tsafta, methyl chloride, propylene oxide, ruwa mai caustic soda, da sauransu.
9. Menene babban aikin amfani da cellulose a cikin foda putty? Akwai wani tasirin sinadarai?
Daga cikin foda na putty, yana taka rawa guda uku na kauri, riƙe ruwa da ginawa. Yana ƙara kauri, cellulose zai iya yin kauri don tsayawa, yana sa maganin ya zama iri ɗaya sama da ƙasa, kuma yana hana yin lanƙwasa. Riƙe ruwa: sa foda na putty ya bushe a hankali, kuma yana taimaka wa tokar calcium ta amsa a ƙarƙashin aikin ruwa. Ginawa: Cellulose yana da tasirin shafawa, wanda zai iya sa foda na putty ya sami kyakkyawan tsari. HPMC ba ya shiga cikin duk wani halayen sinadarai, amma yana taka rawa kawai.
10. Cellulose wani sinadari ne na cellulose wanda ba ionic ba, to menene ba ionic ba?
A taƙaice dai, abubuwan da ba su da aiki ba sa shiga cikin halayen sinadarai.
CMC (carboxymethyl cellulose) wani sinadari ne na cationic cellulose, don haka zai zama wake curd idan ya ci karo da sinadarin ash calcium.
11 Menene alaƙar zafin gel na cellulose da shi?
Zafin gel na HPMC yana da alaƙa da yawan methoxy ɗinsa, ƙarancin yawan methoxy ɗin, mafi girman zafin gel ɗin.
12. Akwai wata alaƙa tsakanin asarar foda na putty foda da cellulose?
Akwai alaƙa! ! ! Wato, rashin isasshen riƙe ruwa na HPMC zai haifar da asarar foda (abin da ke cikin kayan kamar toka, babban sinadarin calcium, da siminti, zafin ginin, da yanayin bango duk zai shafi).
13. Menene bambanci tsakanin ruwan sanyi da cellulose mai narkewa mai zafi a cikin tsarin samarwa?
Ana yi wa nau'in ruwan sanyi na HPMC magani a saman da glyoxal, kuma yana warwatsewa da sauri a cikin ruwan sanyi, amma ba ya narkewa da gaske. Yana narkewa ne kawai lokacin da danko ya ƙaru. Ba a yi wa nau'in narke mai zafi magani da glyoxal ba. Idan adadin glyoxal ya yi yawa, watsawar zai yi sauri, amma danko zai ƙaru a hankali, kuma idan adadin ya ƙanƙanta, akasin haka zai zama gaskiya.
14. Me yasa cellulose ke da wari?
HPMC da aka samar ta hanyar narkewar abinci yana amfani da toluene da isopropanol a matsayin masu narkewa. Idan wankewar ba ta da kyau sosai, za a sami ɗan wari. (Mayar da hankali kan narkewar abinci shine babban hanyar wari)
15. Yadda ake zaɓar cellulose mai dacewa don dalilai daban-daban?
Foda mai kauri: yana buƙatar riƙe ruwa mai yawa, sauƙin gini mai kyau
Turmi mai tushen siminti na yau da kullun: yana buƙatar riƙe ruwa mai yawa, juriya ga zafin jiki mai yawa, da kuma ɗanko nan take
Amfani da manne na gini: samfuran nan take masu yawan danko. (matsayin da aka ba da shawarar
Turmi na Gypsum: riƙe ruwa mai yawa, matsakaicin da ƙarancin danko, ƙaruwar danko nan take
16. Menene wani suna na cellulose?
Ana kiransa da HPMC ko MHPC wanda aka fi sani da hypromellose, cellulose hydroxypropyl methyl ether.
17. Yadda ake amfani da cellulose a cikin foda na putty, menene dalilin kumfa a cikin foda na putty?
A cikin foda na putty, HPMC tana taka rawa guda uku na kauri, riƙe ruwa da kuma ginawa. Dalilan kumfa sune:
1. An ƙara ruwa da yawa.
2. Ƙasan ƙasan ba ta bushe ba, kawai a goge wani Layer a saman, kuma yana da sauƙin kumfa.
18. Menene bambanci tsakanin cellulose da MC:
MC shine methyl cellulose, wanda aka yi shi da cellulose ether ta hanyar magance auduga mai tsafta da alkali, amfani da methane chloride a matsayin wakilin etherification, sannan kuma ana samun jerin martani. Gabaɗaya, matakin maye gurbin shine 1.6-2.0, kuma narkewar ya bambanta da matakai daban-daban na maye gurbin. Bambancin, yana cikin cellulose ether mara ionic.
(1) Rikewar methylcellulose ruwa ya dogara da adadin ƙarinsa, ɗanko, ɗanko da kuma yawan narkewar sa. Gabaɗaya, idan adadin ƙarin ya yi yawa, ɗanko yana da ƙarami, kuma ɗanko yana da girma, ƙimar riƙe ruwa yana da yawa. Daga cikinsu, adadin ƙarin yana da tasiri mafi girma akan ƙimar riƙe ruwa na ɗan adam. Danko ba ya daidai da ƙimar riƙe ruwa. Yawan narkewar ya dogara ne akan saman ƙwayoyin cellulose. Matakin gyara da ɗanko. Daga cikin ƙwayoyin cellulose da yawa da ke sama, ƙimar 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 a cikin ruwan zafi. Maganin ruwansa yana da ƙarfi sosai a cikin kewayon ph = 3-12. Yana da kyakkyawan jituwa da sitaci, da sauransu da kuma yawancin surfactants. Lokacin da zafin jiki Lokacin da zafin gelation ya kai, gelation zai faru.
(3) Sauye-sauye a yanayin zafi zai yi tasiri sosai ga yawan riƙe ruwa na methyl cellulose. Gabaɗaya, idan yawan zafin ya yi yawa, to, yawan riƙe ruwa ya yi muni. Idan zafin turmi ya wuce digiri 40, riƙe ruwa na methyl cellulose zai ragu sosai, wanda zai yi tasiri sosai ga ginin turmi.
(4)Methyl celluloseyana da tasiri mai mahimmanci akan ginawa da mannewa na turmi. Mannewa a nan yana nufin ƙarfin manne da aka ji tsakanin kayan aikin mai amfani da ma'aikacin da kuma abin da ke kan bango, wato, juriyar yanke turmi. Mannewa yana da girma, juriyar yanke turmi yana da girma, kuma ƙarfin da ma'aikata ke buƙata yayin amfani shi ma yana da girma, kuma aikin ginin turmi ba shi da kyau.
Lokacin Saƙo: Afrilu-25-2024