1. Waxaa jira dhowr nooc oo ah hydroxypropyl methylcellulose HPMC, maxayse ku kala duwan yihiin isticmaalkooda?
Jawaab: Hydroxypropyl methylcellulose HPMC waxa loo qaybin karaa nooc degdeg ah iyo nooca-kulul-kulul. Alaabooyinka nooca degdega ah ayaa si degdeg ah ugu firdhiya biyo qabow oo ku baaba'aan biyaha. Waqtigaan, dareeruhu ma laha viscosity, sababtoo ah HPMC kaliya ayaa lagu kala firdhiyey biyaha, ma jiraan wax dhab ah oo milan. Qiyaastii 2 daqiiqo ka dib, viscosity ee dareeraha ayaa si tartiib tartiib ah u kordhay, samaynta kolloid viscos ah oo hufan. Alaabooyinka kululaynta, marka ay la kulmaan biyo qabow, waxay si dhakhso ah ugu firdhi karaan biyaha kulul waxayna ku baaba'aan biyaha kulul. Marka heerkulku hoos u dhaco heerkul gaar ah, mawgu si tartiib ah ayuu u soo baxayaa ilaa kolloid viscous ah oo hufan laga sameeyo. Nooca kulul-kulul waxa kaliya oo loo isticmaali karaa budada suufka ah iyo hoobiye. Xabagta dareeraha ah iyo rinjiga, waxa dhici doona ifafaale is jiid jiid mana la isticmaali karo. Nooca degdegga ah wuxuu leeyahay codsiyo kala duwan oo ballaaran. Waxaa loo isticmaali karaa budada putty iyo hoobiye, iyo sidoo kale xabagta dareeraha ah iyo rinjiga, iyada oo aan wax khilaaf ah.
2. Waa maxay ujeedada ugu weyn ee hydroxypropyl methylcellulose (HPMC)?
J: HPMC waxaa si weyn loogu isticmaalaa qalabka dhismaha, dahaarka, xabagta synthetic, ceramics, daawada, cuntada, dunta, beeraha, qurxinta, tubaakada iyo warshadaha kale. HPMC waxa loo qaybin karaa: heerka dhismaha, heerka cuntada iyo darajada dawooyinka iyadoo loo eegayo ujeedada. Waqtigan xaadirka ah, badi wax soo saarka gudaha waa heerka dhismaha. Marka la eego heerka dhismaha, qadarka budada budada ah waa mid aad u weyn, qiyaastii 90% waxaa loo isticmaalaa budada budada ah, inta soo hartayna waxaa loo isticmaalaa hoobiye sibidhka iyo xabagta.
3. Waa maxay hababka kala dirida hydroxypropyl methylcellulose HPMC?
Jawaab: Habka kala dirida biyaha kulul: Maadaama HPMC aysan ku milmin biyaha kulul, HPMC si isku mid ah ayaa loogu firdhi karaa biyaha kulul marxaladda hore, ka dibna si degdeg ah ayaa loo milmi karaa marka la qaboojiyo. Laba hab oo caadi ah ayaa lagu sifeeyaa sida soo socota:
1), ku dar 1/3 ama 2/3 qiyaasta biyaha loo baahan yahay ee weelka, kuleyli ilaa 70 ° C, sida waafaqsan habka 1), kala firdhi HPMC, diyaari biyo kulul; ka dibna ku dar inta hartay ee biyaha qabow biyo kulul In slurry, isku dar ah ayaa la qaboojiyey ka dib markii la walaaqo.
Habka isku darka budada: Isku qas budada HPMC iyo tiro badan oo walxo kale oo budo ah, si fiican ugu qas qaswadayaasha, ka dibna ku dar biyo si ay u milaan, ka dibna HPMC waa la milmi karaa wakhtigan iyada oo aan la isku dhejin, sababtoo ah waxaa jira HPMC yar oo keliya gees yar oo yar. Budadu isla markiiba way milmi doontaa marka ay biyo taabato. ——Habkan waxaa isticmaala budada shubka ah iyo kuwa sameeya hoobiyeyaasha. [Hydroxypropyl methylcellulose (HPMC) waxaa loo isticmaalaa sidii dhumuc iyo wakiilka biyaha ee hoobiye budada putty.
2), ku rid inta loo baahan yahay ee biyaha kulul weelka, oo kuleyli ilaa 70 ℃. Hydroxypropyl methylcellulose ayaa si tartiib tartiib ah loogu daray walaaqaya tartiib tartiib ah, markii hore HPMC waxay ku dul sabayn jirtay biyaha dushooda, ka dibna si tartiib tartiib ah u sameeyay slurry, kaas oo lagu qaboojiyey walaaq.
4. Sida loo xukumo tayada hydroxypropyl methylcellulose (HPMC) si fudud oo dareen leh?
Jawaab: (1) Cufis-jiidad gaar ah: mar kasta oo cuf-jiidadka gaarka ah uu weynaado, waa uu sii cuslaaday. ka weyn, badanaa sababtoo ah
(2) Cadaan: Inkasta oo caddaanku aanu go'aamin in HPMC ay fududahay in la isticmaalo iyo in kale, iyo haddii walaxda caddaymaha lagu daro habka wax soo saarka, waxay saameyn doontaa tayada. Si kastaba ha noqotee, badi alaabooyinka wanaagsan waxay leeyihiin caddaan wanaagsan.
(3) Wanaag: Wanaajinta HPMC guud ahaan waa 80 mesh iyo 100 mesh, iyo 120 mesh ayaa ka yar. Inta badan HPMC ee laga soo saaro Hebei waa 80 mesh. Sida ugu fiican ee ganaaxa, ayaa u wanaagsan guud ahaan.
(4) Gudbinta: Geli hydroxypropyl methylcellulose (HPMC) biyaha si ay u sameeyaan kolloid hufan, oo hubi gudbintiisa. Markasta oo ay sare u kacdo gudbinta, ayaa ka sii wanaagsan, taas oo muujinaysa in ay jiraan walxo aan milmi karin oo ku jira. Daawada reactors-ka toosan guud ahaan waa ay wanaagsan tahay, kan jiifka ayaa ka sii daran, laakiin lama odhan karo tayada reactors-ka toosan ayaa ka wanaagsan tan reactors-ka, waxaana jira arrimo badan oo go’aamiya tayada badeecadaha. Maadada hydroxypropyl ee ku jirta aad bay u sarraysaa, waxa ku jira hydroxypropylna waa sarreeyaa, haynta biyaha ayaa fiican.
5. Maxay yihiin tilmaamayaasha farsamada ugu muhiimsan ee hydroxypropyl methylcellulose (HPMC)?
Jawaab: Waxa ku jira Hydroxypropyl iyo viscosity, isticmaalayaasha badankoodu waxay daneeyaan labadan tilmaame. Markasta oo ay sareeyso maadada hydroxypropyl, ayaa sii fiicnaaneysa haynta biyaha. Viscous, haynta biyaha, xad (halkii
6. Waa maxay viscosity habboon ee hydroxypropyl methylcellulose (HPMC)?
Jawaab: Budada Putty guud ahaan waa 100,000 yuan, hoobiyuhuna aad buu u baahan yahay, wayna fududahay in la isticmaalo 150,000 yuan. Waxaa intaa dheer, doorka ugu muhiimsan ee HPMC waa ilaalinta biyaha, oo ay ku xigto dhumucdi. In budada putty, ilaa iyo inta haynta biyuhu ay wanaagsan yihiin iyo viscosity hoose (70,000-80,000), sidoo kale waa suurtogal. Dabcan, haddii viscosity-ku sarreeyo, haynta biyaha qaraabada ah ayaa ka fiican. Marka viscosity-ku dhaafo 100,000, saamaynta maan-jiidka ee haysashada biyuhu ma badna. Absolutely) sidoo kale waa ka sii fiican yahay, iyo viscosity waa sarreeyaa, waxaana fiican in la isticmaalo hoobiye sibidhka.
7. Waa maxay alaabta ceeriin ee ugu muhiimsan ee hydroxypropyl methylcellulose (HPMC)?
Jawaab: Qalabka ceeriin ee ugu muhiimsan ee hydroxypropyl methylcellulose (HPMC): suuf la safeeyey, methyl chloride, propylene oxide, alaabta kale ee cayriin waxaa ka mid ah alkali flake, acid, toluene, isopropanol, iwm.
Waqtiga boostada: Febraayo-05-2024