1. Chii chinonyanya kushandiswa chehydroxypropyl methylcellulose (HPMC)?
HPMC inoshandiswa zvakanyanya mukuvaka, machira, ekugadzira resin, ceramics, mushonga, chikafu, machira, kurima, zvizorwa, fodya uye mamwe maindasitiri. HPMC inogona kukamurwa kuita giredhi rekuvaka, giredhi rekudya uye giredhi remishonga zvinoenderana nechinangwa. Parizvino, zvizhinji zvezvigadzirwa zvepamba ndezvekuvaka giredhi. Mugiredhi rekuvaka, putty poda inoshandiswa muhombe, inenge 90% inoshandiswa kune putty poda, uye imwe yese inoshandiswa kune simende dhaka.
2. Chii chinonzi kunhuwa kwehydroxypropyl methylcellulose (HPMC)?
Iyo HPMC inogadzirwa nenzira yekunyungudutsa inoshandisa toluene uye isopropanol sezvinonyungudutsa. Kana kushambidzika kusina kunaka, pachava nekunhuhwirira kwakasara.
3. Ndedzipi nzira dzekuparara kwehydroxypropyl methylcellulose (HPMC)?
Mvura inopisa yekunyungudika nzira: Sezvo HPMC isinganyungudika mumvura inopisa, HPMC inogona kuparadzirwa zvakaenzana mumvura inopisa padanho rekutanga, uye yobva yanyungudika nekukurumidza kana yatonhodzwa. Nzira mbiri dzakajairika dzinotsanangurwa sezvizvi:
1) Isa huwandu hunodiwa hwemvura inopisa mumudziyo uye kupisa kusvika ku70 ° C. Iyo hydroxypropyl methylcellulose yakawedzerwa zvishoma nezvishoma pasi pekusimudzira zvishoma nezvishoma, pakutanga HPMC yakayangarara pamusoro pemvura, uye zvishoma nezvishoma yakagadzira slurry, iyo yakanyoroveswa pasi pekukurudzira.
2), wedzera 1/3 kana 2/3 yehuwandu hunodiwa hwemvura mumudziyo, uye kupisa kusvika 70 ° C, paradzira HPMC maererano nenzira ye1), uye gadzirira slurry yemvura inopisa; wobva wawedzera huwandu hwakasara hwemvura inotonhora kumvura inopisa slurry, musanganiswa wacho wakatonhodzwa mushure mekukurudzira.
Powder kusanganisa nzira: sanganisa HPMC poda nehuwandu hukuru hwezvimwe zvinhu zvehupfu, nyatso sanganisa nemuvhenganisi, wobva wawedzera mvura kuti inyunguduke, ipapo HPMC inogona kunyungudika panguva ino pasina agglomeration, nekuti pane HPMC shoma mukona yega yega Powder, inonyungudika pakarepo kana yasangana nemvura. —— Vagadziri vehupfu nedhaka vari kushandisa nzira iyi. [Hydroxypropyl methylcellulose (HPMC) inoshandiswa sechinhu chakakora uye chekuchengetedza mvura mu putty powder mortar. ]
4. Nzira yekutonga sei kunaka kwehydroxypropyl methylcellulose (HPMC) nyore uye intuitively?
(1) Kuchena: Kunyangwe kuchena kusingakwanise kuona kana HPMC iri nyore kushandisa, uye kana majenti ekuchena akawedzerwa panguva yekugadzira, zvinokanganisa kunaka kwayo. Zvisinei, zvizhinji zvezvigadzirwa zvakanaka zvine kuchena kwakanaka.
(2) Fineness: Kunaka kweHPMC kunowanzo kuve ne80 mesh uye zana mesh, uye 120 mesh ishoma. Yakawanda HPMC inogadzirwa muHebei ndeye 80 mesh. Kunyanya kunaka, kazhinji kutaura, zviri nani.
(3) Chiedza chekufambisa: kuisahydroxypropyl methylcellulose (HPMC)mumvura kuti iite sparent colloid, uye tarisa kutenderera kwayo kwechiedza. Iyo yakakura iyo mwenje transmittance, zviri nani, zvichiratidza kuti kune mashoma insolubles mairi. . Kupinda kwemareactors akatwasuka kazhinji kwakanaka, uye kuya kwemareactors akachinjika kwakaipisisa, asi hazvireve kuti kunaka kwemaactors akatwasuka kuri nani pane emareactor akachinjika, uye kunaka kwechigadzirwa kunotarwa nezvinhu zvakawanda.
(4) Simba rinokwevera zvinhu pasi: Kukura kwegiravhiti chaiyo, kurema ndiko kuri nani. Iyo chaiyo yakakura, kazhinji nekuti zvirimo muboka re hydroxypropyl mariri zvakakwirira, uye zviri muboka re hydroxypropyl zvakakwirira, kuchengetwa kwemvura kuri nani.
5. Ndeupi musiyano uripo pakati pemhando yemvura inotonhora-inotonhora uye inopisa-inonyungudika yehydroxypropyl methylcellulose mukugadzira?
Iyo yekukurumidza-kupararira mhando yeHPMC inobatwa-yakagadziriswa ne glyoxal, uye inopararira nekukurumidza mumvura inotonhora, asi haina kunyatso kunyungudika. Inonyungudika chete kana viscosity ichiwedzera. Iyo yekukurumidza mhando haina kurapwa kwepamusoro ne glyoxal. Kana huwandu hweglyoxal hwakakura, kupararira kuchakurumidza, asi viscosity ichawedzera zvishoma nezvishoma, uye kana mari yacho iri duku, zvinopesana zvichave zvechokwadi.
6. Chii chakakodzera viscosity yehydroxypropyl methylcellulose (HPMC)?
Putty poda inowanzoita 100,000 yuan, uye zvinodiwa zvedhaka zvakakwirira, uye 150,000 yuan inodiwa kuti ishandiswe nyore. Uyezve, iyo inonyanya kukosha basa reHPMC ndeyekuchengetedza mvura, inoteverwa nekukora. Mune putty powder, chero bedzi kuchengetwa kwemvura kwakanaka uye viscosity yakaderera (70,000-80,000), zvinogonekawo. Zvechokwadi, iyo yakakwirira viscosity, zviri nani kuchengetedza mvura. Kana iyo viscosity inopfuura 100,000, iyo viscosity inokanganisa kuchengetwa kwemvura. Hazvina zvakawanda zvakare.
7. Ndeapi makuru ehunyanzvi zviratidzo zvehydroxypropyl methylcellulose (HPMC)?
Hydroxypropyl content uye viscosity, vanhu vazhinji vane hanya nezviratidzo zviviri izvi. Avo vane yakakwira hydroxypropyl zvemukati kazhinji vane zvirinani kuchengetedza mvura. Iyo ine high viscosity ine nani kuchengetedza mvura, zvishoma (kwete zvachose), uye iyo ine viscosity yakakwirira inoshandiswa zviri nani mumatope esimende.
8. Ndezvipi zvinhu zvakakosha zvehydroxypropyl methylcellulose (HPMC)?
Iyo mikuru yezvigadzirwa zvehydroxypropyl methylcellulose (HPMC): donje rakanatswa, methyl chloride, propylene oxide, uye zvimwe zvigadzirwa, caustic soda, acid, toluene, isopropanol, nezvimwe.
9. Ndeipi basa guru rekushandiswa kweHPMCmuputty powder, uye zvinoitika nemakemikari here?
Mune putty poda, HPMC inoita mabasa matatu ekukora, kuchengetedza mvura uye kuvaka.
Kukora: Cellulose inogona kukobvu kumisa uye kuchengeta yunifomu yemhinduro kumusoro nekudzika, uye kuramba kudonha.
Kuchengetwa kwemvura: ita kuti putty poda iome zvishoma nezvishoma, uye batsira madota e calcium kuti aite pasi pekuita kwemvura.
Kuvaka: Cellulose ine lubricating effect, iyo inogona kuita kuti putty powder ive nekuvakwa kwakanaka.
Kuwedzera mvura kune putty powder uye kuiisa pamadziro ndeyekuita kwemakemikari, nokuti zvinhu zvitsva zvinoumbwa. Kana iwe ukabvisa putty powder pamadziro kubva pamadziro, uikuya muupfu, uye uishandise zvakare, haigoni kushanda nokuti zvinhu zvitsva (calcium carbonate) zvakagadzirwa. ) zvakare.
Zvikamu zvikuru zveash calcium powder ndezvi: musanganiswa weCa (OH) 2, CaO uye zvishoma zveCaCO3, CaO+H2O=Ca(OH)2—Ca(OH)2+CO2=CaCO3↓+H2O Ash calcium iri mumvura nemhepo Pasi pechiito cheCO2, calcium carbonate inogadzirwa, nepo HPMC ichingochengeta chero mhinduro yemvura, haibatsiri mvura.
10. HPMC isiri-ionic cellulose ether, saka chii chisiri-ionic?
Muchirevo che layman, asiri-ion zvinhu zvisingaite ionise mumvura. Ionization inoreva nzira iyo electrolyte inopatsanurwa kuita ayoni anochaji anogona kufamba akasununguka mune chaiyo solvent (semvura, doro). Semuenzaniso, sodium chloride (NaCl), munyu watinodya zuva rega rega, unonyunguduka mumvura uye ionizes kugadzira zvakasununguka sodium ion ions (Na+) iyo inochajiswa zvakanaka uye chloride ions (Cl) ine mhosva yakaipa. Kureva kuti, kana HPMC yaiswa mumvura, haizoparadzanise mumaoni anochajwa, asi aripo muchimiro chemamorekuru.
11. Chii chinonzi tembiricha yegel yehydroxypropyl methylcellulose ine chekuita nazvo?
Iyo tembiricha yegel yeHPMC ine hukama neiyo methoxy yemukati, iyo yakadzikira methoxy yemukati, iyo yakakwirira tembiricha yegel.
12. Pane hukama huripo pakati pekudonha kweputty powder uye HPMC?
Kurasikirwa kwehupfu kweputty powder kunonyanya kuenderana nehutano hwemadota e calcium, uye haina zvishoma zvekuita neHPMC. Iyo yakaderera calcium ye grey calcium uye chiyero chisina kukodzera cheCaO uye Ca (OH) 2 mu grey calcium inokonzera kurasikirwa kweupfu. Kana iine chimwe chinhu chekuita neHPMC, zvino kana HPMC ine urombo hwekuchengetedza mvura, inokonzerawo kurasikirwa kweupfu.
13. Ndeupi musiyano uripo pakati pemhando yemvura inotonhorera uye inopisa-inonyungudika yehydroxypropyl methylcellulose mukugadzira?
Kutsanya-kupararira mhando yeHPMCinogadziriswa pamusoro ne glyoxal, uye inopararira nekukurumidza mumvura inotonhora, asi hainyanyi kunyungudika. Inonyungudika chete kana viscosity ichiwedzera. Iyo yekukurumidza mhando haina kurapwa kwepamusoro ne glyoxal. Kana huwandu hweglyoxal hwakakura, kupararira kuchakurumidza, asi viscosity ichawedzera zvishoma nezvishoma, uye kana mari yacho iri duku, zvinopesana zvichave zvechokwadi.
Nguva yekutumira: Kubvumbi-25-2024