1. Halaye daban-daban
Hydroxypropyl methylcellulose: fari ko kashe-fari fibrous ko granular foda, na zuwa iri-iri na wadanda ba ionic cellulose gauraye ethers.Semi-synthetic ne, mara aiki, polymer viscoelastic.
Hydroxyethyl cellulose: (HEC) fari ne ko haske rawaya, wari, mara guba fibrous ko powdered m, shirya ta etherification na alkaline cellulose da ethylene oxide (ko chloroethanol).Yana cikin ethers cellulose mai narkewa ba ionic ba.
2. Amfani daban-daban
Hydroxypropyl methylcellulose: Ana amfani da shi azaman thickener, dispersant da stabilizer a cikin masana'antar shafi, kuma yana da dacewa mai kyau a cikin ruwa ko abubuwan kaushi.A matsayin mai cire fenti;a matsayin mai rarrabawa a cikin samar da polyvinyl chloride, shine babban mahimmin taimako don shirye-shiryen PVC ta hanyar dakatar da polymerization;Hakanan ana amfani dashi sosai a cikin fata, samfuran takarda, adana 'ya'yan itace da kayan lambu da masana'antar masaku.
Hydroxyethyl cellulose: amfani da matsayin m, surfactant, colloidal m wakili, dispersant, emulsifier da watsawa stabilizer, da dai sauransu Yana da fadi da kewayon aikace-aikace a coatings, tawada, zaruruwa, rini, papermaking, kayan shafawa, magungunan kashe qwari, ma'adinai aiki, mai hakar. da magani.
3. Solubility daban-daban
Hydroxypropyl methylcellulose: Yana kusan rashin narkewa a cikin cikakken ethanol, ether, da acetone;yana kumbura a cikin bayani mai haske ko ɗan turbid colloidal a cikin ruwan sanyi.
Hydroxyethyl cellulose: yana da kaddarorin thickening, suspending, bonding, emulsifying, dispersing, da kuma riƙe danshi.Ana iya shirya mafita tare da kewayon danko daban-daban.Ya na kwarai mai kyau gishiri solubility zuwa electrolytes.
Hydroxypropyl methylcellulose (HPMC) Kaddarorin jiki da sunadarai:
1. Bayyanar: MC fari ne ko kusan fari fibrous ko granular foda, mara wari.
2. Properties: MC yana kusan rashin narkewa a cikin cikakken ethanol, ether da acetone.Yana warwatse kuma yana kumbura cikin sauri a cikin ruwan zafi a 80 ~ 90 ℃, kuma yana narkewa da sauri bayan sanyaya.Maganin ruwa mai ruwa yana da kwanciyar hankali a dakin da zafin jiki kuma yana iya gel a babban zafin jiki, kuma gel zai iya canzawa tare da bayani tare da zafin jiki.Yana yana da kyau kwarai wettability, dispersibility, mannewa, thickening, emulsification, ruwa riƙewa da kuma film-forming Properties, kazalika da impermeability ga man shafawa.Fim ɗin da aka kafa yana da kyakkyawan tauri, sassauci da bayyana gaskiya.Saboda ba shi da ionic, yana iya dacewa da sauran emulsifiers, amma yana da sauƙi don fitar da gishiri kuma maganin ya tsaya a cikin kewayon PH2-12.
3. Ƙimar da aka bayyana: 0.30-0.70g / cm3, yawancin yana da kusan 1.3g / cm3.
2. Hanyar warwarewa:
Ana ƙara samfurin MC kai tsaye zuwa ruwa, zai haɓaka sannan kuma ya narke, amma wannan rushewar yana da hankali sosai kuma yana da wahala.An ba da shawarar hanyoyin warwarewa guda uku masu zuwa, kuma mai amfani zai iya zaɓar hanya mafi dacewa bisa ga yanayin amfani:
1. Hanyar ruwan zafi: Tun da MC ba ya narke a cikin ruwan zafi, ana iya tarwatsa MC daidai a cikin ruwan zafi a matakin farko.Lokacin da aka sanyaya daga baya, ana bayyana hanyoyi guda biyu na al'ada kamar haka:
1).Saka adadin ruwan zafi da ake buƙata a cikin akwati kuma yayi zafi zuwa kimanin 70 ° C.A hankali ƙara MC a hankali a hankali, fara yawo a saman ruwan, sannan a hankali ya samar da slurry, a kwantar da slurry a cikin tashin hankali.
2).Ƙara 1/3 ko 2/3 na adadin da ake bukata na ruwa a cikin akwati kuma zafi shi zuwa 70 ℃.Bi hanyar 1) don tarwatsa MC don shirya slurry ruwan zafi;sannan a zuba sauran ruwan sanyi ko ruwan kankara A cikin ruwan zafi mai zafi, a sanyaya cakuda bayan an motsa.
2. Hanyar hadawa foda: Mix MC foda barbashi tare da daidai ko girma adadin sauran powdery sinadaran don cika su tarwatsa su ta bushe hadawa, sa'an nan kuma ƙara ruwa don narkar da, sa'an nan MC za a iya narkar da ba tare da agglomerating.
3. Hanyar da za a jika mai ƙarfi: kafin a tarwatsa ko kuma a jiƙa MC tare da sauran ƙarfi, kamar ethanol, ethylene glycol ko mai, sannan a ƙara ruwa don narkewa, sannan MC kuma za'a iya narkar da shi sosai a wannan lokacin.
3. Manufar:
Wannan samfurin da ake amfani da ko'ina a cikin ginin gini, kayan gini, dispersive coatings, fuskar bangon waya pastes, polymerization Additives, Paint cire, fata, tawada, takarda, da dai sauransu kamar yadda thickeners, adhesives, ruwa-retaining jamiái, film-forming jamiái, Excipients, da dai sauransu. Misali, ana amfani da shi azaman abin ɗaure, mai kauri da mai riƙe ruwa a cikin kayan gini, a matsayin wakili mai yin fim da kauri a cikin masana'antar shafa, kuma ana amfani da shi sosai a fannoni kamar hakar mai da masana'antar sinadarai ta yau da kullun. .
Kaddarorin jiki da sinadarai na methyl cellulose (MC):
3. Bayyanar: MC fari ne ko kusan fari fibrous ko granular foda, mara wari.
Kayayyakin: MC kusan ba zai iya narkewa a cikin cikakken ethanol, ether da acetone.Yana watsewa da kumbura cikin sauri a cikin ruwan zafi na 80 ~ 90> ℃, kuma yana narkewa da sauri bayan sanyaya.Maganin ruwa yana da kwanciyar hankali a yanayin zafi na al'ada kuma yana iya gel a babban zafin jiki, kuma gel zai iya canzawa tare da bayani tare da zafin jiki.Yana yana da kyau kwarai wettability, dispersibility, mannewa, thickening, emulsification, ruwa riƙewa da kuma film-forming Properties, kazalika da impermeability ga man shafawa.Fim ɗin da aka kafa yana da kyakkyawan tauri, sassauci da bayyana gaskiya.Saboda ba shi da ionic, yana iya dacewa da sauran emulsifiers, amma yana da sauƙi don fitar da gishiri kuma maganin ya tsaya a cikin kewayon PH2-12.
1.Parent density: 0.30-0.70g / cm3, yawa ne game da 1.3g / cm3.
Na gaba.Hanyar warwarewa:
MC> Ana zuba samfurin kai tsaye a cikin ruwa, zai yi girma sannan kuma ya narke, amma wannan narkarwar yana da sauri da wahala.Ana ba da shawarar hanyoyin warwarewa guda uku masu zuwa, kuma masu amfani za su iya zaɓar hanya mafi dacewa bisa ga yanayin amfani:
1. Hanyar ruwan zafi: Tun da MC ba ya narke a cikin ruwan zafi, ana iya tarwatsa MC daidai a cikin ruwan zafi a matakin farko.Lokacin da aka sanyaya daga baya, ana bayyana hanyoyi guda biyu na al'ada kamar haka:
1).Saka adadin ruwan zafi da ake buƙata a cikin akwati kuma yayi zafi zuwa kimanin 70 ° C.A hankali ƙara MC a hankali a hankali, fara yawo a saman ruwan, sannan a hankali ya samar da slurry, a kwantar da slurry a cikin tashin hankali.
2).Ƙara 1/3 ko 2/3 na adadin ruwan da ake bukata a cikin akwati kuma zafi shi zuwa 70 ° C.Bi hanyar a cikin 1) don tarwatsa MC don shirya ruwan zafi mai zafi;sannan a zuba sauran ruwan sanyi ko ruwan kankara A cikin ruwan zafi mai zafi, a sanyaya cakuda bayan an motsa.
Hanyar hadawa foda: busassun hadawa MC foda barbashi tare da daidai ko girma adadin sauran powdered sinadaran don cika su tarwatsa su, sa'an nan kuma ƙara ruwa don narkar da su, sa'an nan MC za a iya narkar da ba tare da agglomeration.
3. Hanyar jika mai ƙarfi mai ƙarfi: tarwatsa ko jiƙa MC tare da sauran ƙarfi, kamar ethanol, ethylene glycol ko mai, sannan a ƙara ruwa don narkar da shi.Sannan MC kuma ana iya narkar da shi lafiya.
Biyar.Manufar:
Wannan samfurin da ake amfani da ko'ina a cikin ginin gini, kayan gini, dispersive coatings, fuskar bangon waya pastes, polymerization Additives, Paint cire, fata, tawada, takarda, da dai sauransu kamar yadda thickeners, adhesives, ruwa-retaining jamiái, film-forming jamiái, Excipients, da dai sauransu. Misali, ana amfani da shi azaman abin ɗaure, mai kauri da mai riƙe ruwa a cikin kayan gini, a matsayin wakili mai yin fim da kauri a cikin masana'antar shafa, kuma ana amfani da shi sosai a fannoni kamar hakar mai da masana'antar sinadarai ta yau da kullun. .
1. Masana'antar gine-gine: A matsayin wakili mai riƙe da ruwa da kuma sake dawo da turmi na siminti, yana sa turmin ya zama mai ɗorewa.Ana amfani da shi azaman ɗaure a cikin filasta, filasta, foda ko wasu kayan gini don haɓaka yaduwa da tsawaita lokacin aiki.Ana iya amfani da shi don manna fale-falen yumbu, marmara, kayan ado na filastik, mai haɓaka manna, kuma yana iya rage adadin siminti.Abubuwan riƙe ruwa na HPMC suna hana slurry daga fashe saboda bushewa da sauri bayan aikace-aikacen, da haɓaka ƙarfi bayan taurin.
2. Masana'antar masana'antar yumbu: ana amfani da shi sosai azaman ɗaure a cikin masana'antar samfuran yumbu.
3. Paint masana'antu: A matsayin thickener, dispersant da stabilizer a cikin fenti masana'antu, yana da kyau dacewa a cikin ruwa ko kwayoyin kaushi.A matsayin mai cire fenti.
4. Tawada bugu: A matsayin thickener, dispersant da stabilizer a cikin tawada masana'antu, yana da kyau dacewa a cikin ruwa ko kwayoyin kaushi.
5. Filastik: ana amfani da su azaman masu sakin mold, softeners, lubricants, da sauransu.
6. Polyvinyl chloride: Ana amfani dashi azaman mai rarrabawa a cikin samar da polyvinyl chloride kuma shine babban mahimmin taimako don shirya PVC ta hanyar dakatar da polymerization.
7. Wasu: Hakanan ana amfani da wannan samfur a cikin fata, samfuran takarda, adana 'ya'yan itace da kayan lambu da masana'antar masaku.
8. Masana'antar magunguna: kayan shafa;kayan fim;kayan aikin polymer mai sarrafa kudi don shirye-shiryen jinkirin-saki;stabilizers;wakilai masu dakatarwa;kwamfutar hannu masu ɗaure;masu kauri.Haɗarin kiwon lafiya: wannan samfurin yana da aminci kuma ba mai guba ba, kuma ana iya amfani dashi azaman ƙari na abinci, Babu zafi, babu haushi ga hulɗar fata da mucosa.Gabaɗaya ana la'akari da aminci (FDA1985), abin da ake yarda da shi yau da kullun shine 25mg/kg (FAO/WHO 1985), kuma yakamata a sanya kayan kariya yayin aiki.
Tasirin muhalli: Ka guji jefawa bazuwar don haifar da gurɓataccen iska ta hanyar ƙura mai tashi.
Hatsari na jiki da na sinadarai: Ka guji tuntuɓar maɓuɓɓugar wuta, da guje wa samuwar ƙura mai yawa a cikin rufaffiyar muhalli don hana haɗarin fashewar abubuwa.
Wannan abu a zahiri ana amfani da shi azaman mai kauri ne kawai, wanda ba shi da kyau ga fata.
Lokacin aikawa: Nuwamba-24-2021