Ƙananan danko HPMC: HPMC 400 galibi ana amfani da shi don turmi mai daidaita kansa, amma gabaɗaya ana shigo da shi daga waje.
Dalili: Danko yana da ƙasa, duk da cewa riƙe ruwa ba shi da kyau, amma daidaita shi yana da kyau, kuma yawan turmi yana da yawa.
Matsakaici da ƙarancin ɗanko:hydroxypropyl methylcelluloseHPMC 20000-40000 ana amfani da shi ne musamman don manne tayal, wakili na caulking, turmi mai hana fashewa, turmi mai ɗaurewa na thermal, da sauransu.
Dalili: kyakkyawan aiki, ƙarancin ƙara ruwa, da kuma yawan turmi.
1. Menene babban manufar hydroxypropyl methylcellulose (HPMC)?
——A: 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 gini, matakin abinci da kuma matakin magunguna bisa ga manufar. A halin yanzu, yawancin kayayyakin gida suna da matakin gini. A matakin gini, adadin foda na putty yana da yawa sosai, kusan kashi 90% ana amfani da shi don foda na putty, sauran kuma ana amfani da shi don turmi da manne na siminti.
2. Akwai nau'ikan hydroxypropyl methylcellulose (HPMC) da dama, kuma menene bambanci a amfani da su?
——Amsa: Ana iya raba HPMC zuwa nau'in nan take da nau'in narke mai zafi. Kayayyakin nan take suna watsuwa da sauri a cikin ruwan sanyi kuma suna ɓacewa cikin ruwa. A wannan lokacin, ruwan ba shi da ɗanɗano, saboda HPMC yana warwatse ne kawai a cikin ruwa kuma ba shi da narkewa ta gaske. Bayan kimanin mintuna 2, ɗanɗano na ruwan yana ƙaruwa a hankali, yana samar da colloid mai haske. Kayayyakin da ke narkewa da zafi, lokacin da suka haɗu da ruwan sanyi, ana iya warwatse su da sauri a cikin ruwan zafi, kuma su ɓace a cikin ruwan zafi. Lokacin da zafin ya faɗi zuwa wani zafin jiki (samfurin kamfaninmu yana da digiri 65 Celsius), ɗanɗano yana bayyana a hankali har sai ya samar da colloid mai haske. Ana iya amfani da nau'in narke mai zafi kawai a cikin foda da turmi. A cikin manne da fenti na ruwa, abin da ke haifar da ƙulli zai faru kuma ba za a iya amfani da shi ba. Nau'in nan take yana da fa'idodi da yawa. Ana iya amfani da shi a cikin foda da turmi na putty, da kuma a cikin manne da fenti na ruwa, ba tare da wata matsala ba.
3. Waɗanne hanyoyi ne ake amfani da su wajen narkar da hydroxypropyl methylcellulose (HPMC)?
——Amsa: Hanyar narkar da ruwan zafi: Tunda HPMC ba ya narkar da ruwan zafi, ana iya watsa HPMC a cikin ruwan zafi a matakin farko, sannan a narkar da shi da sauri idan ya huce. An bayyana hanyoyi guda biyu na yau da kullun kamar haka:
1) A saka ruwan zafi da ake buƙata a cikin akwati sannan a dumama shi zuwa kimanin digiri 70 na Celsius. A hankali aka ƙara hydroxypropyl methylcellulose a hankali ana juyawa a hankali, da farko HPMC ta yi iyo a saman ruwan, sannan a hankali ta samar da wani abu mai laushi, wanda aka sanyaya shi da juyawa.
2), ƙara 1/3 ko 2/3 na adadin ruwan da ake buƙata a cikin akwati, sannan a dumama shi zuwa 70 ° C, bisa ga hanyar 1), a watsa HPMC, a shirya ruwan zafi; sannan a ƙara sauran ruwan sanyi a cikin ruwan zafi. A cikin ruwan, an sanyaya cakuda bayan an juya.
Hanyar haɗa foda: A haɗa foda na HPMC da adadi mai yawa na sauran abubuwa masu ƙura, a haɗa sosai da mahaɗi, sannan a ƙara ruwa don ya narke, sannan a iya narkar da HPMC a wannan lokacin ba tare da ya haɗu ba, domin akwai ƙaramin HPMC kawai a kowace ƙaramin kusurwa. Foda zai narke nan da nan idan ya taɓa ruwa. ——Masana'antun foda na putty da turmi suna amfani da wannan hanyar. [Ana amfani da Hydroxypropyl methylcellulose (HPMC) a matsayin mai kauri da kuma wakili mai riƙe ruwa a cikin turmi na putty. ]
4. Ta yaya za a tantance ingancin hydroxypropyl methylcellulose (HPMC) cikin sauƙi da fahimta?
——Amsa: (1) Fari: Duk da cewa fari ba zai iya tantance ko HPMC yana da sauƙin amfani ba, kuma idan an ƙara mai haske a cikin tsarin samarwa, zai shafi ingancinsa. Duk da haka, yawancin samfuran masu kyau suna da farin launi mai kyau. (2) Tsantsar Siffa: Tsantsar Siffa ta HPMC gabaɗaya raga ce ta 80 da raga 100, kuma raga 120 ƙasa da haka. Yawancin HPMC da ake samarwa a Hebei raga ce ta 80. Mafi ƙanƙantar siffa ce, mafi kyau. (3) Watsawa: Sanya hydroxypropyl methylcellulose (HPMC) a cikin ruwa don samar da colloid mai haske, kuma duba watsa shi. Mafi girman watsa shi, mafi kyau, yana nuna cewa akwai ƙananan abubuwa marasa narkewa a cikinsa. Shukewar siffa ta tsaye gabaɗaya tana da kyau, kuma siffa ta kwance ta fi muni, amma ba za a iya cewa ingancin siffa ta tsaye ta fi ta siffa ta kwance kyau ba, kuma akwai abubuwa da yawa da ke tantance ingancin samfurin. (4) Takamaiman nauyi: girman takamaiman nauyi, mafi nauyi mafi kyau. Nauyin da ke cikinsa yana da girma, gabaɗaya saboda yawan sinadarin hydroxypropyl da ke cikinsa yana da yawa, kuma yawan sinadarin hydroxypropyl yana da yawa, riƙe ruwa ya fi kyau.
5. Adadin hydroxypropyl methylcellulose (HPMC) a cikin foda na putty?
——Amsa: Adadin HPMC da ake amfani da shi a aikace ya bambanta dangane da yanayi, zafin jiki, ingancin sinadarin calcium na gida, dabarar foda putty da kuma "ingancin da abokan ciniki ke buƙata". Gabaɗaya, yana tsakanin kilogiram 4 zuwa 5. Misali, yawancin foda putty a Beijing shine kilogiram 5; yawancin foda putty a Guizhou shine kilogiram 5 a lokacin rani da kilogiram 4.5 a lokacin hunturu;
6. Menene dacewar danko na hydroxypropyl methylcellulose (HPMC)?
——Amsa: Fulawar Putty gabaɗaya tana da yuan 100,000, kuma turmi yana da matuƙar buƙata, kuma yana da sauƙin amfani a yuan 150,000. Bugu da ƙari, mafi mahimmancin aikin HPMC shine riƙe ruwa, sannan kauri ya biyo baya. A cikin foda putty, matuƙar riƙe ruwa yana da kyau kuma ɗanɗanon ya yi ƙasa (70,000-80,000), haka nan yana yiwuwa. Tabbas, ɗanɗanon ya fi girma, kuma riƙe ruwa mai alaƙa ya fi kyau. Idan ɗanɗanon ya wuce 100,000, tasirin ɗanɗanon ga riƙe ruwa ba shi da yawa.
7. Menene manyan alamun fasaha na hydroxypropyl methylcellulose (HPMC)?
——Amsa: Yawan sinadarin Hydroxypropyl da kuma yawan sinadarin, yawancin masu amfani da shi suna damuwa da waɗannan alamomi guda biyu. Mafi girman sinadarin hydroxypropyl, haka nan yawan sinadarin da ke riƙe ruwa zai fi kyau. Yawan sinadarin da ke riƙe ruwa, mafi kyawun riƙe ruwa (maimakon cikakken bayani), da kuma yawan sinadarin da ke riƙe ruwa, mafi kyawun amfani da shi a turmi na siminti.
8. Menene manyan kayan da ake amfani da su wajen samar da sinadarin hydroxypropyl methylcellulose (HPMC)?
—— A: Manyan kayan da ake amfani da su wajen samar da hydroxypropyl methylcellulose (HPMC): auduga mai tsafta, methyl chloride, propylene oxide, sauran kayan da ake amfani da su sun hada da flake alkali, acid, toluene, isopropanol, da sauransu.
9. Menene babban aikin HPMC wajen amfani da foda mai tsami, kuma akwai wani sinadari?
——Amsa: HPMC tana da ayyuka uku na kauri, riƙe ruwa da kuma ginawa a cikin foda putty. Kauri: Ana iya ƙara kauri cellulose don dakatarwa, kiyaye maganin daidai gwargwado da daidaito, da kuma tsayayya da lanƙwasawa. Riƙe ruwa: Sanya foda putty ya bushe a hankali, kuma yana taimakawa wajen amsawar sinadarin ash a ƙarƙashin aikin ruwa. Ginawa: Cellulose yana da tasirin shafawa, wanda zai iya sa foda putty ya sami kyakkyawan aiki. HPMC ba ya shiga cikin kowane amsawar sinadarai kuma yana taka rawa kawai. Ƙara ruwa a cikin foda putty da sanya shi a bango amsawar sinadarai ce. Saboda samuwar sabbin abubuwa, ɗauki foda putty a bango daga bango, niƙa shi ya zama foda, sannan a sake amfani da shi. Ba zai yi aiki ba, saboda an samar da sabbin abubuwa (calcium carbonate). Babban abubuwan da ke cikin foda na ash calcium sune: cakuda Ca(OH)2, CaO2 da ƙaramin adadin CaCO3, CaO+H2O=Ca(OH)2 —Ca(OH)2+CO2=CaCO3↓+H2O Calcium a cikin ruwa da iska A ƙarƙashin aikin CO2, ana samar da calcium carbonate, yayin da HPMC ke riƙe ruwa kawai kuma yana taimakawa wajen inganta amsawar ash calcium, kuma baya shiga cikin kowane martani da kansa.
10. HPMC ba shi da sinadarin cellulose ether, to menene ba shi da sinadarin ionic?
- Amsa: A taƙaice, non-ions abubuwa ne da ba sa yin ion a cikin ruwa. Ionization yana nufin tsarin da ake raba electrolyte zuwa ions masu motsi kyauta a cikin wani takamaiman sinadarin sinadarai (kamar ruwa, barasa). Misali, sodium chloride (NaCl), gishirin da ake ci kowace rana, yana narkewa a cikin ruwa kuma yana yin ionize don samar da ions masu motsi kyauta (Na+) waɗanda ke da caji mai kyau da ions masu chloride (Cl) waɗanda ke da caji mara kyau. Wato, lokacin da aka sanya HPMC a cikin ruwa, ba ya rabuwa zuwa ions masu caji, amma yana wanzuwa a cikin nau'in ƙwayoyin halitta.
Lokacin Saƙo: Oktoba-17-2022