1. Chii chinonyanya kushandiswa chehydroxypropyl methylcellulose (HPMC)?
——Mhinduro: HPMC inoshandiswa zvakanyanya mukuvaka, machira, marezeni ekugadzira, ceramics, mushonga, chikafu, machira, kurima, zvizorwa, fodya uye mamwe maindasitiri. HPMC inogona kukamurwa kuita: giredhi rekuvaka, giredhi rekudya uye giredhi remishonga zvinoenderana nekushandiswa. 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?
——Mhinduro: HPMC inogona kukamurwa kuita yekukurumidza mhando uye inopisa-kuparara mhando. Iko pakarepo rudzi chigadzirwa chinopararira nokukurumidza mumvura inotonhora uye inonyangarika mumvura. Panguva ino, mvura haina viscosity, nokuti HPMC inongopararira mumvura pasina kuparara kwechokwadi. Inenge maminetsi 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. Mumvura glue uye pendi, pachave nemapoka chiitiko uye hachigone 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)?
——Mhinduro: Nzira yekunyungudutsa mvura inopisa: Sezvo HPMC isinganyungudika mumvura inopisa, HPMC inogona kuparadzirwa zvakaenzana mumvura inopisa padanho rekutanga, yobva yanyungudika nekukurumidza kana ichitonhora. 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 hupfu nehuwandu hukuru hwezvimwe zvinhu zvehupfu, nyatso sanganisa nemusanganisi, wobva wawedzera mvura kunyungudika, ipapo HPMC inogona kunyungudutswa panguva ino pasina kusanganiswa, nekuti pane chete HPMC diki mune zvese zvidiki. kona Powder, ichanyungudika 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?
——Mhinduro: (1) Huchena: Kunyangwe kuchena kusingakwanise kuona kana HPMC iri nyore kushandisa, uye kana maajenti 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 i80 mesh, uye iyo yakatsetseka, kazhinji kutaura, zviri nani. (3) Light transmittance: isa hydroxypropyl methylcellulose (HPMC) mumvura kuti iite yakajeka colloid, uye tarisa iyo chiedza transmittance. Iyo yakakura iyo mwenje transmittance, zviri nani, zvichiratidza kuti kune mashoma insolubles mairi. . Kupinda kwereactor yakatwasuka kazhinji kwakanaka, uye kuya kwereactor yakachinjika kwakaipa, asi hazvireve kuti kunaka kwereactor yakatwasuka kuri nani pane iyo yereactor yakachinjika, uye pane zvakawanda zvinotaridza kunaka kwechigadzirwa. . (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. Ndeipi yakakodzera viscosity yehydroxypropyl methylcellulose (HPMC)?
——Mhinduro: Putty powder inowanzoita 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.
6. Ndeapi makuru ehunyanzvi zviratidzo zvehydroxypropyl methylcellulose (HPMC)?
——Mhinduro: Hydroxypropyl yemukati uye viscosity, vazhinji vashandisi vane hanya neizvi zviratidzo zviviri. 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.
7. Ndezvipi zvinhu zvakakosha zvehydroxypropyl methylcellulose (HPMC)?
—— Mhinduro: Iyo huru mbishi ye hydroxypropyl methylcellulose (HPMC): yakanatswa donje, methyl chloride, propylene oxide, uye zvimwe mbishi, caustic soda, acid, toluene, isopropanol, nezvimwe.
8. Ndeipi basa guru rekushandiswa kweHPMC mu putty powder, uye inoitika nemakemikari?
——Mhinduro: Mune putty poda, HPMC inobata 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 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 pekuita kwe CO2, calcium carbonate inogadzirwa, nepo HPMC inongochengetedza mvura, ichibatsira kuita zviri nani kweash calcium, uye haibatanidzi mune chero ipi zvayo pachayo.
9. HPMC isiri-ionic cellulose ether, saka chii chisiri-ionic?
——Mhinduro: Mukutaura kwevasina-ioni zvinhu zvisingaite ioni 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.
10. Chii chinonzi tembiricha yegel yehydroxypropyl methylcellulose ine chekuita nazvo?
--Mhinduro: Iyo tembiricha yegel yeHPMC ine hukama neiyo methoxy yemukati. Iyo yakadzikira iyo methoxy yemukati↓, inokwidza tembiricha yegel.
11. Pane hukama huripo pakati pekudonha kweputty powder uye HPMC?
--Mhinduro: Kurasikirwa kwehupfu hweputty powder kunonyanya kuenderana nehutano hweash calcium, uye haina zvishoma kuita 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.
12. Ndeupi musiyano uripo pakati pemhando yemvura inotonhora-inotonhora uye inopisa-inonyungudika yehydroxypropyl methylcellulose mukugadzira?
——Mhinduro: Iyo inotonhora-yemvura inotonhora yemhando yeHPMC inorapwa pamusoro neglyoxal, uye inopararira nekukurumidza mumvura inotonhora, asi haina kunyatso kunyungudika. Inonyungudika chete kana viscosity ichiwedzera. Mhando dzinopisa dzakanyungudika hadzina kubatwa pamusoro ne glyoxal. Kana huwandu hweglyoxal hwakakura, kupararira kuchakurumidza, asi viscosity ichawedzera zvishoma nezvishoma, uye kana mari yacho iri duku, zvinopesana zvichave zvechokwadi.
13. Chii chinonzi kunhuwa kwehydroxypropyl methylcellulose (HPMC)?
——Mhinduro: Iyo HPMC inogadzirwa nenzira yekunyungudutsa inoshandisa toluene uye isopropanol sezvinonyungudutsa. Kana kushambidzika kusina kunaka, pachava nekunhuhwirira kwakasara.
14. Nzira yekusarudza yakakodzera hydroxypropyl methylcellulose (HPMC) kune zvinangwa zvakasiyana?
——Mhinduro: Kushandiswa kweputty powder: zvinodiwa zvishoma, uye viscosity ndeye 100,000, izvo zvakakwana. Chinhu chakakosha kuchengetedza mvura zvakanaka. Kushandiswa kwedhaka: zvinodiwa zvepamusoro, high viscosity, 150,000 zviri nani. Kushandiswa kweglue: zvigadzirwa zvekukurumidza zvine viscosity yakakwirira zvinodiwa.
15. Nderipi rimwe zita rehydroxypropyl methylcellulose?
——Mhinduro: Hydroxypropyl Methyl Cellulose, Shona: Hydroxypropyl Methyl Cellulose Kupfupisa: HPMC kana MHPC Alias: Hypromellose; Cellulose hydroxypropyl methyl ether; Hypromellose, Cellulose, 2-hydroxypropyl methyl Cellulose ether. Cellulose hydroxypropyl methyl ether Hyprolose.
16. Kushandiswa kweHPMC mu putty powder, chii chikonzero chezviputi muputty powder?
——Mhinduro: Mune putty poda, HPMC inobata mabasa matatu ekukora, kuchengetedza mvura uye kuvaka. Usatora chikamu mune chero maitiro. Zvikonzero zvemabhuru: 1. Isa mvura yakawandisa. 2. Musoro wepasi hauna kuoma, ingotsvaira imwe nhanho pamusoro, uye iri nyore kupupa.
17. Ndeupi musiyano uripo pakati peHPMC neMC?
——Mhinduro: MC is methyl cellulose, iyo inogadzirwa ne cellulose ether nekurapa donje rakanatswa nealkali, uchishandisa methane chloride se etherification agent, uye kuburikidza neakatevedzana maitiro. Kazhinji, dhigirii rekutsiva i1.6 ~ 2.0, uye kunyungudika kwakasiyanawo nemadhigirii akasiyana ekutsiva. Iyo ndeye isiri-ionic cellulose ether.
(1) Kuchengetwa kwemvura kwemethyl cellulose kunoenderana nehuwandu hwayo hwekuwedzera, viscosity, particle fineness uye dissolution rate. Kazhinji, kana huwandu hwekuwedzera hwakakura, hunyoro hudiki, uye viscosity yakakura, mwero wekuchengetedza mvura wakakwira. Pakati pavo, huwandu hwekuwedzera hune simba guru pahuwandu hwekuchengetedza mvura, uye chiyero che viscosity hachina kuenzana zvakananga nehuwandu hwekuchengetedza mvura. Mwero wekunyungudika unonyanya kuenderana nehuwandu hwekugadziriswa kwepasi kwe cellulose particles uye particle fineness. Pakati pema cellulose ethers ari pamusoro, methyl cellulose uye hydroxypropyl methyl cellulose vane mwero wepamusoro wekuchengetedza mvura.
(2) Methylcellulose inonyungudika mumvura inotonhora, uye zvichange zvakaoma kunyungudika mumvura inopisa. Mushonga wayo une aqueous wakanyatsogadzikana muhupamhi hwepH = 3 ~ 12. Iine kuwirirana kwakanaka ne starch, guar gum, nezvimwewo uye akawanda ma surfactants. Kana tembiricha inosvika tembiricha yegelation, gelation inoitika.
(3) Shanduko mutembiricha ichakanganisa zvakanyanya mwero wekuchengetedza mvura yemethyl cellulose. Kazhinji, kukwirisa tembiricha, kunowedzera kuchengetedzeka kwemvura. Kana tembiricha yevhu ichipfuura 40 ° C, kuchengetwa kwemvura kwemethyl cellulose kuchaderedzwa zvakanyanya, kunokanganisa zvakanyanya kuvakwa kwedhaka.
(4) Methyl cellulose ine mhedzisiro yakakosha pakuvaka uye kunamatira kwedhaka. “Kunamira” pano kunoreva simba rekunamira rinonzwikwa pakati pemudziyo wemudziyo wekushandisa nemadziro emadziro, ndiko kuti, kugerwa kwedhaka. Kunamatira kwakakwirira, kupikisa kweshear kwevhu kwakakura, uye simba rinodiwa nevashandi vari mukugadzirisa kushandiswa kwakakurawo, uye kushanda kwekuvaka kwedhaka kwakashata. Methyl cellulose adhesion iri pamwero wepakati mune cellulose ether zvigadzirwa.
HPMC inonzi hydroxypropyl methylcellulose, inova isiri-ionic cellulose yakasanganiswa ether yakagadzirwa kubva kudonje rakanatswa mushure me alkalization, uchishandisa propylene oxide uye methyl chloride se etherification agents, uye kuburikidza neakatevedzana maitiro. Dhigirii rekutsiva kazhinji 1.2 ~ 2.0. Zvimiro zvaro zvakasiyana nekuda kweiyo reshiyo yakasiyana yemethoxyl yemukati uye hydroxypropyl yemukati.
(1) Hydroxypropyl methylcellulose inonyungudika nyore nyore mumvura inotonhora, uye ichasangana nematambudziko mukunyungudika mumvura inopisa. Asi tembiricha yayo yegelation mumvura inopisa yakanyanya kukwirira kupfuura yemethyl cellulose. Iyo solubility mumvura inotonhora zvakare yakagadziridzwa zvakanyanya kana ichienzaniswa nemethyl cellulose.
(2) Iyo viscosity yehydroxypropyl methylcellulose inoenderana nehuremu hwayo hwemamorekuru, uye iyo yakakura huremu hwemamorekuru, inokwirisa viscosity. Kupisa kunokanganisawo viscosity yayo, sezvo tembiricha inowedzera, viscosity inoderera. Nekudaro, iyo yakakwira viscosity ine yakaderera tembiricha mhedzisiro pane methyl cellulose. Mushonga waro wakagadzikana kana wakachengetwa pakushambidzika kwekamuri.
(3) Hydroxypropyl methylcellulose yakagadzikana kune asidhi uye alkali, uye mhinduro yayo yemvura yakanyatsogadzikana muhuwandu hwepH = 2 ~ 12. Caustic soda uye mvura yeraimu haina mhedzisiro pakuita kwayo, asi alkali inogona kukurumidzira kuparara kwayo uye kuwedzera viscosity yayo. Hydroxypropyl methylcellulose yakagadzikana kune yakajairwa munyu, asi kana kusanganiswa kwemunyu munyu kwakakwira, viscosity yehydroxypropyl methylcellulose mhinduro inowedzera kuwedzera.
(4) Kuchengetwa kwemvura yehydroxypropyl methylcellulose kunoenderana nehuwandu hwayo hwekuwedzera, viscosity, nezvimwewo, uye chiyero chekuchengetedza mvura pasi peiyo imwe yekuwedzera yakakwira kupfuura iyo yemethyl cellulose.
(5) Hydroxypropyl methylcellulose inogona kusanganiswa nemvura-soluble polymer compounds kuti iite yunifomu uye yakakwirira viscosity mhinduro. Zvakadai se polyvinyl doro, starch ether, muriwo gum, nezvimwe.
(6) Iko kunamatira kwehydroxypropyl methylcellulose kukuvaka kwedhaka kwakakwira kupfuura iyo yemethylcellulose.
(7) Hydroxypropyl methylcellulose ine nani enzyme kuramba kupfuura methylcellulose, uye mhinduro yayo haigone kuderedzwa nema enzymes kupfuura methylcellulose.
18. Chii chinofanira kutariswa mukushandiswa chaiko kwehukama pakati pe viscosity uye tembiricha yeHPMC?
——Mhinduro: The viscosity of HPMC iri inversely proportional kune tembiricha, kureva kuti, viscosity inowedzera sezvo tembiricha inoderera. Iyo viscosity yechigadzirwa chatinowanzo taura nezvayo inoreva bvunzo mhedzisiro yayo 2% aqueous solution patembiricha ye20 degrees Celsius.
Mumashandisirwo anoshanda, zvinofanirwa kucherechedzwa kuti munzvimbo dzine tembiricha yakakura misiyano pakati pezhizha nechando, zvinokurudzirwa kushandisa yakaderera viscosity munguva yechando, iyo inobatsira pakuvaka. Kana zvisina kudaro, kana kutonhora kwakaderera, viscosity ye cellulose inowedzera, uye kunzwa kwemaoko kuchave kunorema pakukwesha.
Medium viscosity: 75000-100000 Inonyanya kushandiswa kune putty.
Chikonzero: kuchengetedza mvura zvakanaka.
High viscosity: 150000-200000 Inonyanya kushandiswa polystyrene particle thermal insulation mortar glue powder uye vitrified microbead thermal insulation mortar.
Chikonzero: high viscosity, dhaka haisi nyore kudonha, kurembera, uye kugadzirisa kuvaka.
Asi kazhinji kutaura, iyo yakakwirira viscosity, zviri nani kuchengetedza mvura. Nokudaro, tichifunga nezvemutengo, mafekitari mazhinji akaoma ehupfu anotsiva epakati uye akaderera viscosity cellulose (20000-40000) nepakati-viscosity cellulose (20000-40000) kuderedza kuwanda kwekuwedzera. .
Nguva yekutumira: Nov-21-2022