1. Chii chinonyanya kushandiswa chehydroxypropyl methylcellulose (HPMC)?
Hydroxypropyl methylcellulose inoshandiswa zvakanyanya mukuvaka, machira, ekugadzira resin, ceramics, mushonga, chikafu, machira, zvekurima, zvizorwa, fodya uye mamwe maindasitiri. Hydroxypropyl methylcellulose inogona kukamurwa kuita giredhi rekuvaka, giredhi rekudya uye giredhi remishonga zvichienderana nekushandiswa kwayo. Parizvino, zvizhinji zvezvigadzirwa zvepamba ndezvekuvaka giredhi. Mugiredhi rekuvaka, putty poda inoshandiswa muhombe, inenge 90% inoshandiswa kune putty poda, uye imwe yasara inoshandiswa simende dhaka uye glue.
2. Kune marudzi akawanda ehydroxypropyl methylcellulose (HPMC), uye ndezvipi zvakasiyana mukushandiswa kwawo?
HPMC inogona kukamurwa kuva pakarepo mhando uye inopisa-kuparara mhando. Instant mhando zvigadzirwa zvinopararira nekukurumidza kana zvikasangana nemvura inotonhora uye zvinonyangarika mumvura. Panguva ino, mvura haina viscosity nekuti HPMC inongoparadzirwa mumvura pasina kuparara chaiko. Mushure memaminitsi maviri, viscosity yemvura inowedzera zvishoma nezvishoma, ichigadzira yakajeka viscous colloid. Zvigadzirwa zvinopisa zvinonyunguduka, kana zvasangana nemvura inotonhora, zvinogona kupararira nekukurumidza mumvura inopisa uye kunyangarika mumvura inopisa. Kana tembiricha yadzikira kune imwe tembiricha, viscosity inozoonekwa zvishoma nezvishoma kusvika yaita yakajeka viscous colloid. Iyo inopisa-yakanyunguduka mhando inogona kungoshandiswa muputty poda uye dhaka. Mune glue yemvura uye pendi, pachave nemapoka chiitiko uye haigone kushandiswa. Rudzi rwepakarepo rune huwandu hwakakura hwemaapplication. Inogona kushandiswa mu putty poda uye dhaka, pamwe chete nemvura glue uye pendi, pasina contraindications.
3. Ndedzipi nzira dzekuparara kwehydroxypropyl methylcellulose (HPMC)?
Mvura inopisa yekunyungudutsa nzira: Sezvo HPMC isinganyungudika mumvura inopisa, HPMC inogona kuparadzirwa zvakafanana 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, maererano nenzira ye1), paradzira HPMC kugadzirira slurry yemvura inopisa; wobva wawedzera huwandu hwakasara hwemvura inotonhorera kune inopisa mvura slurry, musanganiswa wacho wakanyoroveswa 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 muputty poda.]
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 100 mesh, 120 mesh ishoma, uye yakawanda HPMC inogadzirwa muHebei makumi masere mesh. Kunyanya kunaka, kazhinji kutaura, zviri nani.
(3) Transmittance: Isa hydroxypropyl methylcellulose (HPMC) mumvura kuti iite yakajeka colloid, uye tarisa transmittance yayo. Iyo yakakwirira iyo transmittance, zviri nani, zvichiratidza kuti pane zvishoma zvisinganyunguriki 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. Chii chinonzi hydroxypropyl methylcellulose (HPMC) muputty powder?
Huwandu hweHPMC hunoshandiswa mumashandisirwo anoshanda hunosiyana zvichienderana nemamiriro ekunze, tembiricha, hutano hwemunharaunda ash calcium, formula yeputty powder uye "mhando inodiwa nevatengi". Kazhinji kutaura, pakati pe4 kg ne5 kg. Semuenzaniso: yakawanda yeputty powder muBeijing ndeye 5 kg; yakawanda yeputty powder muGuizhou i5 kg muzhizha uye 4.5 kg muchando; huwandu hweputty hupfu muYunnan hudiki, kazhinji 3 kg kusvika 4 kg, nezvimwe.
6. Chii chakakodzera viscosity yehydroxypropyl methylcellulose (HPMC)?
Putty poda kazhinji inokwana 100,000 yuan, uye zvinodiwa padhaka 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 yemukati uye viscosity, vashandisi 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. Ndeapi makuru ezvigadzirwa 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 kweHPMC mu putty powder, uye inoitika nemakemikari?
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. HPMC haitore chikamu mune chero chemakemikari maitiro, asi inongotamba yebetsero. Kuwedzera mvura kune putty powder uye kuiisa pamadziro ndeyekuita kwemakemikari, nokuti zvinhu zvitsva zvinoumbwa. Kana iwe ukabvisa putty poda pamadziro kubva pamadziro, uchikuya kuita upfu, uye uishandise zvakare, haizoshandi nekuti zvinhu zvitsva (calcium carbonate) zvave zvaumbwa.) zvakare. Izvo zvikamu zvikuru zveash calcium powder ndezvi: musanganiswa weCa (OH) 2, Ca O uye zvishoma zveCaCO3, CaO + H2O = Ca (OH) 2-Ca (OH) 2 + CO2 = CaCO3↓ + H2O Ash calcium iri mumvura uye mumhepo Pasi pekuita kwe CO2, calcium carbonate inogadzirwa, nepo HPMC inochengeta chero ipi zvayo yemvura, inochengetedza mvura uye 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 rinhiHPMCinoiswa mumvura, haizoparadzanise mumaoni anochajiswa, asi aripo muchimiro chemamorekuru.
Nguva yekutumira: Kubvumbi-28-2024