1. Menene babban amfani da hydroxypropyl methylcellulose?
Ana amfani da HPMC sosai a fannin kayan gini, fenti, 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 yadda ake amfani da shi.
2. Akwai nau'ikan hydroxypropyl methylcellulose da dama. Menene bambance-bambancen da ke tsakaninsu?
Ana iya raba HPMC zuwa nau'in nan take (ƙarin alama "S") da nau'in mai narkewa mai zafi. Samfuran nan take suna watsuwa da sauri a cikin ruwan sanyi kuma suna ɓacewa a cikin ruwa. A wannan lokacin, ruwan ba shi da ɗanko saboda HPMC yana warwatse ne kawai a cikin ruwa kuma ba shi da ainihin mafita. Bayan kimanin mintuna 2 (ana juyawa), ɗanko na ruwan yana ƙaruwa a hankali kuma ana samun colloid mai haske. Samfuran da ke narkewa mai zafi, a cikin ruwan sanyi, na iya watsuwa da sauri a cikin ruwan zafi kuma su ɓace a cikin ruwan zafi. Lokacin da zafin jiki ya faɗi zuwa wani zafin jiki (bisa ga zafin gel na samfurin), ɗanko yana bayyana a hankali har sai an samar da colloid mai haske da ɗanko.
3. Waɗanne hanyoyi ne ake amfani da su wajen magance matsalar hydroxypropyl methylcellulose?
1. Ana iya ƙara duk samfuran zuwa kayan ta hanyar haɗa busasshiyar abu;
2. Yana buƙatar a ƙara shi kai tsaye a cikin ruwan da aka saba amfani da shi a yanayin zafi. Ya fi kyau a yi amfani da nau'in watsa ruwan sanyi. Bayan ƙari, yawanci yakan kai kauri cikin mintuna 10-90 (juya, juyawa, juyawa)
3. Ga samfuran yau da kullun, a fara juyawa a watsa da ruwan zafi, sannan a ƙara ruwan sanyi don ya narke bayan an juya ya kuma sanyaya.
4. Idan haɗuwa ko naɗewa ya faru yayin narkewa, to saboda juyawar bai isa ba ko kuma an ƙara samfurin da aka saba da shi kai tsaye a cikin ruwan sanyi. A wannan lokacin, a juya da sauri.
5. Idan an samar da kumfa yayin narkewa, ana iya barin su na tsawon awanni 2-12 (lokacin ya dogara da daidaiton maganin) ko kuma a cire su ta hanyar cire injin, matsi, da sauransu, kuma ana iya ƙara adadin sinadarin da ke lalata su.
4. Ta yaya za a tantance ingancin hydroxypropyl methylcellulose cikin sauƙi da fahimta?
1. Fari. Duk da cewa fari ba zai iya tantance ko HPMC yana da kyau ko a'a ba, kuma ƙara sinadaran yin fari a lokacin samarwa zai shafi ingancinsa, yawancin kayayyaki masu kyau suna da kyakkyawan fari.
2. Fineness: Fineness na HPMC gabaɗaya shine raga 80 da raga 100, ƙasa da 120, fineness mafi kyau.
3. Watsa haske: HPMC tana samar da colloid mai haske a cikin ruwa. Duba watsa haske. Girman watsa haske, mafi kyawun ikon shiga, wanda ke nufin akwai ƙarancin abubuwan da ba za su iya narkewa a ciki ba. Mai watsa haske na tsaye gabaɗaya yana da kyau, kuma mai watsa haske na kwance zai fitar da wasu. Amma ba za a iya cewa ingancin samar da kettles na tsaye ya fi na kettles na kwance ba. Akwai dalilai da yawa da ke ƙayyade ingancin samfur.
4. Nauyin nauyi na musamman: Girman nauyi na musamman, nauyi mafi kyau. Girman nauyi na musamman, girman abun ciki na hydroxypropyl. Gabaɗaya, girman abun ciki na hydroxypropyl, haka ma riƙe ruwa yake.
5. Nawa ne hydroxypropyl methylcellulose ake amfani da shi a cikin foda na putty?
Adadin HPMC da ake amfani da shi a aikace-aikace na ainihi ya bambanta daga wuri zuwa wuri, gabaɗaya, yana tsakanin kilogiram 4-5, ya danganta da yanayin yanayi, zafin jiki, ingancin ash na calcium na gida, dabarar foda putty da buƙatun ingancin abokin ciniki.
6. Menene danko na hydroxypropyl methylcellulose?
Fulawar putty gabaɗaya tana kashe RMB 100,000, yayin da turmi ke da buƙatu mafi girma. Yana kashe RMB 150,000 don sauƙin amfani. Bugu da ƙari, mafi mahimmancin aikin HPMC shine riƙe ruwa, sannan kauri. A cikin foda putty, matuƙar riƙe ruwa yana da kyau kuma ɗanɗanon yana da ƙasa (7-8), haka nan yana yiwuwa. Tabbas, girman ɗanɗanon, mafi kyawun riƙe ruwa. Lokacin da ɗanɗanon ya wuce 100,000, ɗanɗanon ba shi da tasiri sosai akan riƙe ruwa.
7. Menene manyan alamun fasaha na hydroxypropyl methylcellulose?
Abubuwan da ke cikin Hydroxypropyl
Yawan sinadarin methyl
danko
Toka
asarar nauyi mai bushewa
8. Menene manyan kayan da ake amfani da su wajen samar da sinadarin hydroxypropyl methylcellulose?
Babban kayan albarkatun HPMC: auduga mai tsafta, methyl chloride, propylene oxide, sauran kayan albarkatun kasa, caustic soda, da acid toluene.
9. Amfani da kuma babban aikin hydroxypropyl methylcellulose a cikin foda putty, shin sinadarai ne?
A cikin foda na putty, yana taka muhimmiyar rawa guda uku: kauri, riƙe ruwa da kuma ginawa. Kauri na iya kauri cellulose kuma yana taka rawar dakatarwa, yana sa maganin ya zama iri ɗaya sama da ƙasa kuma yana hana yin lanƙwasa. Riƙe ruwa: Sanya foda na putty ya bushe a hankali kuma yana taimaka wa launin toka calcium ya amsa ƙarƙashin aikin ruwa. Ikon Aiki: Cellulose yana da tasirin shafawa, wanda ke sa foda na putty ya sami kyakkyawan aiki. HPMC ba ya shiga cikin duk wani halayen sinadarai kuma yana taka rawa kawai.
10. Hydroxypropyl methylcellulose wani sinadari ne na cellulose wanda ba ionic ba, to menene nau'in da ba ionic ba?
Gabaɗaya dai, abubuwan da ba su da aiki ba sa shiga cikin halayen sinadarai.
CMC (carboxymethylcellulose) wani sinadari ne na cationic kuma zai zama tofu idan aka fallasa shi ga tokar calcium.
11. Menene alaƙar zafin gel na hydroxypropyl methylcellulose da shi?
Zafin gel na HPMC yana da alaƙa da sinadarin methoxyl ɗinsa. Mafi ƙarancin sinadarin methoxyl, haka nan zafin gel ɗin yake.
12. Akwai wata alaƙa tsakanin foda na putty da hydroxypropyl methylcellulose?
Wannan yana da mahimmanci! HPMC ba ta da isasshen riƙe ruwa kuma zai haifar da ƙura.
13. Menene bambanci a tsarin samarwa tsakanin maganin ruwan sanyi da maganin ruwan zafi na hydroxypropyl methylcellulose?
Nau'in HPMC mai narkewa cikin ruwan sanyi yana warwatse cikin ruwan sanyi da sauri bayan an yi masa magani da glyoxal, amma a zahiri ba ya narkewa. Danko yana ƙaruwa, wato, yana narkewa. Ba a yi wa saman magani da glyoxal magani da nau'in narke mai zafi ba. Glyoxal yana da girma kuma yana warwatse da sauri, amma yana da ɗanko a hankali da ƙaramin girma, haka nan kuma akasin haka.
14. Menene ƙamshin hydroxypropyl methylcellulose?
Ana yin HPMC da aka samar ta hanyar amfani da sinadarin solvent ta hanyar toluene da isopropyl alcohol a matsayin sinadaran solvent. Idan ba a wanke shi da kyau ba, za a sami ɗan wari. (Rage wari da sake amfani da shi muhimmin tsari ne na wari)
15. Ta yaya za a zaɓi hydroxypropyl methylcellulose da ya dace don amfani daban-daban?
Foda mai kauri: buƙatun riƙe ruwa mai yawa da kuma kyakkyawan sauƙin gini (alamar da aka ba da shawarar: 7010N)
Turmi na yau da kullun da aka yi da siminti: riƙe ruwa mai yawa, juriya ga zafin jiki mai yawa, ɗanko nan take (shawarar matakin: HPK100M)
Manna kayan gini: samfurin nan take, ɗanko mai yawa. (Alamar da aka ba da shawarar: HPK200MS)
Turmi na Gypsum: riƙe ruwa sosai, ɗanko mai matsakaici-ƙasa, ɗanko nan take (shawarar matakin: HPK600M)
16. Menene sunan hydroxypropyl methylcellulose guda ɗaya?
HPMC ko MHPC kuma ana kiranta da hydroxypropyl methylcellulose da hydroxypropyl methylcellulose ether.
17. Amfani da hydroxypropyl methylcellulose a cikin foda na putty. Me ke haifar da kumfa ga foda na putty?
HPMC tana taka muhimmiyar rawa guda uku a cikin foda mai kauri: kauri, riƙe ruwa da kuma ginawa. Dalilan kumfa sune:
1. Ƙara ruwa da yawa.
2. Idan ƙasan ba ta bushe ba, goge wani Layer a saman zai haifar da ƙuraje cikin sauƙi.
18. Menene bambanci tsakanin hydroxypropyl methylcellulose da MC:
Ana yin MC, methyl cellulose, daga auduga mai tsafta bayan an yi maganin alkali, ana amfani da methane chloride a matsayin wakilin etherifying, da kuma jerin halayen da ake samu don samar da cellulose ether. Matsakaicin matakin maye gurbin shine 1.6-2.0, kuma narkewar matakan maye gurbin daban-daban shima ya bambanta. Cellulose ether ne wanda ba ionic ba.
(1) Rikewar methylcellulose ruwa ya dogara da adadin ƙarinsa, ɗanko, ɗanko da kuma yawan narkewar sa. Gabaɗaya, adadin ƙarin yana da girma, ɗanko yana da girma, ɗanko yana da yawa, kuma yawan riƙe ruwa yana da yawa. Adadin ƙarin yana da babban tasiri akan yawan riƙe ruwa, kuma ɗanko ba shi da alaƙa da yawan riƙe ruwa. Yawan narkewar ya dogara ne akan matakin gyaran saman da kuma ɗanko na ƙwayoyin cellulose. Daga cikin ƙwayoyin cellulose da ke sama, methylcellulose da hydroxypropylmethylcellulose suna da yawan riƙe ruwa.
(2) Ana iya narkar da Methyl cellulose a cikin ruwan sanyi, amma zai fuskanci matsala wajen narkewa a cikin ruwan zafi. Maganin ruwansa yana da ƙarfi sosai a cikin kewayon pH = 3-12, kuma yana da kyakkyawan jituwa da sitaci da sauran surfactants. Lokacin da zafin jiki ya kai gel Lokacin da zafin gel ɗin ya ƙaru, gelation zai faru.
(3) Canje-canje a yanayin zafi zai yi tasiri sosai ga yawan riƙe ruwa na methylcellulose. Gabaɗaya, idan yawan zafin ya yi yawa, to, yawan riƙe ruwa ya yi muni. Idan zafin turmi ya wuce digiri 40, riƙe ruwa na methylcellulose zai yi muni sosai, wanda hakan zai shafi ginin turmi sosai.
(4) Methylcellulose yana da tasiri mai yawa akan ginawa da mannewa na turmi. Mannewa a nan yana nufin mannewa tsakanin kayan aikin ma'aikacin da kayan tushe na bango, wato, juriyar yanke turmi. Mannewa yana da yawa, juriyar yanke turmi yana da yawa, kuma ƙarfin da ma'aikata ke buƙata yayin amfani shi ma yana da yawa, don haka aikin ginin turmi ba shi da kyau.
Lokacin Saƙo: Janairu-31-2024