1. Chii chinonyanya kushandiswa pakushandisahydroxypropyl methylcellulose (HPMC)?
HPMC inoshandiswa zvakanyanya muzvinhu zvekuvaka, machira ekuputira, maresini ekugadzira, zviumbwa zvedoro, mishonga, chikafu, machira, kurima, zvizoro, fodya nedzimwe nzvimbo. HPMC inogona kukamurwa kuita giredhi rekuvaka, giredhi rechikafu uye giredhi remishonga zvichienderana nechinangwa. Parizvino, zvigadzirwa zvakawanda zvemumba ndezvekuvaka. Mugiredhi rekuvaka, putty powder inoshandiswa zvakanyanya, inenge 90% inoshandiswa putty powder, uye yasara inoshandiswa simende mortar.
2. Kunhuhwirira kwehydroxypropyl methylcellulose (HPMC) chii?
HPMC inogadzirwa nenzira yekunyungudutsa inoshandisa toluene neisopropanol sezvinhu zvinonyungudutsa. Kana kusukwa kusina kunaka, pachava nekunhuwa kwasara.
3. Ndedzipi nzira dzekunyungudutsa hydroxypropyl methylcellulose (HPMC)?
Nzira yekunyungudutsa mvura inopisa: Sezvo HPMC isinganyungudike mumvura inopisa, HPMC inogona kunyungudika zvakaenzana mumvura inopisa pakutanga, yobva yanyungudika nekukurumidza kana yatonhodzwa. Nzira mbiri dzakajairika dzinotsanangurwa seizvi:
1) Isa mvura inopisa inodiwa mumudziyo woipisa kusvika pa70°C. Hydroxypropyl methylcellulose yakawedzerwa zvishoma nezvishoma nekukurunga zvishoma nezvishoma, pakutanga HPMC yaiyerera pamusoro pemvura, uye zvishoma nezvishoma yakaumba slurry, iyo yaitonhodzwa nekukurunga.
2), wedzera 1/3 kana 2/3 yehuwandu hwemvura hunodiwa mumudziyo, woipisa kusvika 70°C, paradzanisa HPMC zvichienderana nenzira ye1), wobva wagadzira slurry yemvura inopisa; wobva wawedzera huwandu hwemvura inotonhora yasara muslurry yemvura inopisa, musanganiswa wacho watonhodzwa mushure mekukurunga.
Nzira yekusanganisa upfu: sanganisa upfu hweHPMC nezvimwe zvinhu zvakawanda zvine upfu, sanganisa zvakanaka nemuchina wekusanganisa, wobva wawedzera mvura kuti inyunguduke, ipapo HPMC inogona kunyungudutswa panguva ino pasina kuungana, nekuti pane HPMC shoma mukona imwe neimwe diki Powder, inonyunguduka pakarepo kana yasangana nemvura. ——Vagadziri vePutty powder nemortar vari kushandisa nzira iyi. [Hydroxypropyl methylcellulose (HPMC) inoshandiswa sechinhu chinosimbisa uye chinochengetedza mvura mumortar yeputty powder.]
4. Ungatonga sei mhando yehydroxypropyl methylcellulose (HPMC) zviri nyore uye nenzira isinganzwisisike?
(1) Kuchena: Kunyangwe kuchena kusingakwanise kuona kana HPMC iri nyore kushandisa, uye kana mishonga yekuchenesa ikawedzerwa panguva yekugadzira, inokanganisa kunaka kwayo. Zvisinei, zvigadzirwa zvakawanda zvakanaka zvine kuchena kwakanaka.
(2) Kupfava: Kupfava kweHPMC kunowanzova nemambure makumi masere nemembure zana, uye mambure zana nemakumi maviri ari mashoma. HPMC yakawanda inogadzirwa muHebei ine mambure makumi masere. Kupfava kunowedzera, kazhinji, ndiko kuri nani.
(3) Kutumira chiedza: puthydroxypropyl methylcellulose (HPMC)mumvura kuti igadzire colloid yakajeka, uye tarisa kufambiswa kwayo kwechiedza. Kufambiswa kwechiedza kwakakura, zviri nani, zvichiratidza kuti hapana zvinhu zvakawanda zvinonyunguduka mairi. . Kupinda kwemagetsi e-vertical reactors kazhinji kwakanaka, uye kwe-horizontal reactors kwakaipa, asi hazvirevi kuti mhando yemagetsi e-vertical reactors iri nani pane ye-horizontal reactors, uye mhando yechigadzirwa inotsanangurwa nezvinhu zvakawanda.
(4) Simba remagetsi rakasiyana-siyana: Simba remagetsi rakasiyana-siyana rakakura, uye simba remagetsi rakasiyana-siyana rinoremawo. Simba remagetsi rakasiyana-siyana rakakura, kazhinji nekuti huwandu hwehydroxypropyl group hurimo hwakawanda, uye huwandu hwehydroxypropyl group hwakasiyana-siyana, kuchengetedza mvura kuri nani.
5. Ndeupi musiyano uripo pakati pemhando yemvura inotonhora inokurumidza uye mhando yehydroxypropyl methylcellulose inonyungudika inopisa mukugadzirwa kwayo?
Rudzi rweHPMC runopararira nekukurumidza runorapwa pamusoro ne glyoxal, uye runopararira nekukurumidza mumvura inotonhora, asi harunyungudike zvechokwadi. Runonyungudika chete kana viscosity yawedzera. Rudzi rweinstant type haruna mushonga wepamusoro ne glyoxal. Kana huwandu hwe glyoxal hwakakura, kupararira kuchakurumidza, asi viscosity ichawedzera zvishoma nezvishoma, uye kana huwandu hwacho huri hudiki, zvakapesana zvichava zvechokwadi.
6. Chii chinonzi viscosity yakakodzera yehydroxypropyl methylcellulose (HPMC)?
Upfu hweputty hunowanzova 100,000 yuan, uye zvinodiwa zvemortar zvakakwira, uye 150,000 yuan inodiwa kuti zvive nyore kushandisa. Uyezve, basa guru reHPMC kuchengetedza mvura, richiteverwa nekukora. Muupfu hweputty, chero bedzi mvura iri kuchengetwa zvakanaka uye viscosity yakaderera (70,000-80,000), zvinogonekawo. Ehe, viscosity yakakwira, kuchengetedza mvura kuri nani. Kana viscosity ikadarika 100,000, viscosity inokanganisa kuchengetedza mvura. Hazvichanyanyi kukosha.
7. Ndezvipi zviratidzo zvikuru zve hydroxypropyl methylcellulose (HPMC)?
Kuwanda kwehydroxypropyl uye kusviba, vanhu vazhinji vanonetseka nezvezviratidzo zviviri izvi. Avo vane hydroxypropyl yakawanda vanowanzo chengeta mvura zviri nani. Iyo ine kusviba kwakanyanya inochengetedza mvura zviri nani, zvishoma (kwete zvachose), uye iyo ine kusviba kwakanyanya inoshandiswa zviri nani mumota yesimende.
8. Ndezvipi zvinhu zvikuru zve hydroxypropyl methylcellulose (HPMC)?
Zvinhu zvikuru zve hydroxypropyl methylcellulose (HPMC): donje rakanatswa, methyl chloride, propylene oxide, nezvimwe zvinhu zvisina kugadzirwa, caustic soda, acid, toluene, isopropanol, nezvimwewo.
9. Ndeipi basa guru rekushandisaHPMCmuupfu hweputty, uye zvinoitika here nemakemikari?
Muupfu hweputty, HPMC inoita mabasa matatu ekuwedzera kukora, kuchengetedza mvura uye kuvaka.
Kukora: Cellulose inogona kukobvurwa kuti irambe yakakora uye ichengetedze mvura yakafanana kumusoro nekudzika, uye ichidzivirira kudonha.
Kuchengetwa kwemvura: ita kuti upfu hweputty huome zvishoma nezvishoma, uye batsira ash calcium kuti iite chiito pasi pemvura.
Kuvaka: Cellulose ine simba rekuzora, izvo zvinogona kuita kuti upfu hweputty huve nekugadzirwa kwakanaka.
Kuwedzera mvura kuhupfu hweputty woiisa pamadziro inyaya yemakemikari, nekuti zvinhu zvitsva zvinoumbwa. Kana ukabvisa hupfu hweputty pamadziro kubva pamadziro, wohukuya kuita hupfu, wohushandisa zvakare, hahuzoshande nekuti zvinhu zvitsva (calcium carbonate) zvagadzirwawo.
Zvinhu zvikuru zviri muupfu hwecalcium yemadota ndeizvi: musanganiswa weCa(OH)2, CaO uye huwandu hushoma hweCaCO3, CaO+H2O=Ca(OH)2—Ca(OH)2+CO2=CaCO3↓+H2O Kalsiamu yemadota iri mumvura nemhepo Pasi pekushanda kweCO2, calcium carbonate inogadzirwa, nepo HPMC ichingochengeta mvura chete, ichibatsira kuita zviri nani kwecalcium yemadota, uye haibatanidzwi mune chero chiito pachayo.
10. HPMC i-non-ionic cellulose ether, saka chii chinonzi non-ionic?
Mukutaura kwevanhuwo zvavo, ma non-ion zvinhu zvisingaite ioni mumvura. Ionization zvinoreva maitiro apo electrolyte inosanganiswa kuita ma ioni ane chaji anogona kufamba zvakasununguka mune chimwe chinhu chinonyungudutsa (senge mvura, doro). Semuenzaniso, sodium chloride (NaCl), munyu watinodya zuva nezuva, unonyunguduka mumvura uye unoite ioni kuti igadzire ma sodium ions anofambiswa zviri nyore (Na+) ane chaji yakanaka uye ma chloride ions (Cl) ane chaji yakaipa. Kureva kuti, kana HPMC ikaiswa mumvura, haizoparadzi kuita ma ioni ane chaji, asi inovapo muchimiro chemamorekuru.
11. Chii chinoenderana nekupisa kwegel kwehydroxypropyl methylcellulose?
Kupisa kwejeli kweHPMC kunoenderana nehuwandu hwayo hwemethoxy, kana huwandu hwemethoxy hwakaderera, ndiko kuwedzera kwekushisa kwejeli.
12. Pane hukama huripo pakati pedonhwe reputty powder neHPMC here?
Kurasikirwa kweupfu hweputty powder kunonyanya kukonzerwa nekunaka kwecalcium yemumadota, uye hakuna chekuita neHPMC. Kuderera kwecalcium mugray calcium uye chiyero chisina kunaka cheCaO neCa(OH)2 mugray calcium zvinokonzera kurasikirwa kweupfu. Kana ine chekuita neHPMC, saka kana HPMC isina mvura yakakwana, inokonzerawo kurasikirwa kweupfu.
13. Ndeupi musiyano uripo pakati pemhando yemvura inotonhora inokurumidza uye mhando yehydroxypropyl methylcellulose inonyungudika inopisa mukugadzirwa kwayo?
Rudzi rwekupararira nekukurumidza kweHPMCinorapwa pamusoro ne glyoxal, uye inopararira nekukurumidza mumvura inotonhora, asi hainyungudike zvechokwadi. Inonyungudika chete kana viscosity yawedzera. Rudzi rweinstant type haruna mushonga wepamusoro ne glyoxal. Kana huwandu hwe glyoxal hwakakura, kupararira kuchakurumidza, asi viscosity ichawedzera zvishoma nezvishoma, uye kana huwandu hwacho huri hudiki, zvakapesana zvichava zvechokwadi.
Nguva yekutumira: Kubvumbi-25-2024