Nhanganyaya yeHydroxypropyl Methyl Cellulose
Hydroxypropyl methylcellulose, inozivikanwawo se hypromellose uye HPMC cellulose hydroxypropyl methyl ether, inogadzirwa necotton cellulose yakanyanya kuchena seyakagadzirwa, iyo inonyanya kunyungudutswa pasi pemamiriro ealkaline. HPMC ihupfu chena, isinganakidze, isinganhuhwi, isina chepfu, isingachinji zvachose mumuviri wemunhu uye yakaburitswa kubva mumuviri. Chigadzirwa chacho chinonyunguduka mumvura, asi chisina kunyungudika mumvura inopisa. The aqueous solution is a colorless transparent viscous substance. HPMC ine yakanakisa thickening, emulsifying, firimu-kuumba, kuparadzira, inodzivirira colloid, mwando kuchengetedza, adhesion, asidhi uye alkali kuramba, enzyme kuramba uye zvimwe zvinhu, uye rinoshandiswa zvikuru mukuvaka, coatings, mushonga, zvokudya, machira, mafuta minda, cosmetics, washing Agents, ceramics, ingi uye makemikari polymerization maitiro.
1. Iyo yakaderera calcium ye grey calcium uye chiyero chisina kufanira cheCaO uye Ca (OH) 2 mu grey calcium inokonzera kurasikirwa kweupfu. Kana iine chimwe chinhu chekuita neHPMC, zvino kana kuchengetwa kwemvura kweHPMC kusina kunaka, kuchaitawo kuti upfu hurasikirwa. Iko kurasikirwa kwehupfu kweputty powder kune chokuita nehydroxypropyl methylcellulose? Kurasikirwa kwehupfu kweputty powder kunonyanya kuenderana nehutano hwemadota e calcium, uye haina zvishoma zvekuita neHPMC.
2. Basa rinonyanya kukosha rehydroxypropyl methylcellulose kuchengetedza mvura, inoteverwa nekuwedzera. 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.
Chii chinonzi viscosity yehydroxypropyl methylcellulose (HPMC)?
Putty poda inowanzoita 100,000 yuan, uye zvinodiwa zvedhaka zvakakwirira, uye 150,000 yuan inodiwa kuti ishandiswe nyore.
3. Ndezvipi zvinhu zvakakosha zvehydroxypropyl methylcellulose? Iyo huru yezvigadzirwa zvehydroxypropyl methylcellulose (HPMC): donje rakanatswa, methyl chloride, propylene oxide, uye zvimwe zvigadzirwa, caustic soda, acid, Toluene, isopropanol, nezvimwe.
4. Chii chikonzero chekunhuhwirira kwehydroxypropyl methylcellulose? Iyo hydroxypropyl methylcellulose inogadzirwa nenzira yekunyungudutsa inoshandisa toluene uye isopropanol sezvinonyungudutsa. Kana kushambidzika kusina kunyatsonaka, pachava nekunhuhwirira kwakasara .
5. Hydroxypropyl methylcellulose: Iyo ine high hydroxypropyl content inowanzova nani mukuchengetedza mvura. Iyo ine high viscosity ine nani kuchengetedza mvura, zvishoma (kwete zvachose), uye iyo ine viscosity yakakwirira inoshandiswa zviri nani mumatope esimende. Ndeapi makuru ehunyanzvi zviratidzo? Hydroxypropyl yemukati uye viscosity, vashandisi vazhinji vane hanya nezviratidzo zviviri izvi.
Chiitiko che efflorescence mudhaka chine hukama nehydroxypropyl methylcellulose?
Imwe nguva yapfuura, mutengi akataura kuti chigadzirwa chacho chine efflorescence, uye akanga achiita zvekupfapfaidza. Shotcrete: Basa guru nderekuvhara kumashure, roughen, uye kuwedzera kunamatira pakati pemadziro uye pamusoro pezvinhu. Shandisa zvishoma, ingopfapfaidza chidimbu chakaonda pamadziro. Heino mufananidzo weiyo efflorescence phenomenon yandakatumirwa nemutengi: Mufananidzo Kuita kwangu kwekutanga ndeyekuti haisiriyo honzeri yehydroxypropyl methylcellulose, nekuti hydroxypropyl methylcellulose haienderane nechero chinhu chiri mupfuti. Uye chiitiko che efflorescence ndechekuti: yakajairika kongiri ndeye silicate, kana ikasangana nemhepo kana hunyoro mumadziro, iyo silicate ion inopinda hydrolysis reaction, uye iyo inogadzirwa hydroxide inosanganiswa nesimbi ions kuita hydroxide ine yakaderera solubility (chemical properties Alkaline) , kana kutonhora kuchikwira, mhute yemvura inoputika, uye hydroxide inonaya kubva pamadziro. Nekudonha kwemvura zvishoma nezvishoma, iyo hydroxide inonaya pamusoro pesimende yekrete, iyo inounganidza nekufamba kwenguva, ichiita kushongedza kwepakutanga Kana pende kana pende ichisimudzwa uye isingachabatiki kumadziro, kuchena, kupepeta, uye. peeling ichaitika. Iyi nzira inonzi "pan-alkali". Saka haisi iyo ubiquinol inokonzerwa nehydroxypropyl methylcellulose
Mutengi akataurawo chiitiko: iyo yakapfapfaidza grout yaakaita ichava nepani-alkaline chiitiko pamadziro ekongiri, asi haizooneki pamadziro ezvidhinha akapiswa, izvo zvinoratidza kuti iyo nesilicon mune simende inoshandiswa pamadziro ekongiri Manyu (zvakasimba alkaline). salt) dzakawandisa. Efflorescence inokonzerwa nekubuda kwemvura inoshandiswa mukupfapfaidza grouting. Nekudaro, hapana silicate pamadziro ezvidhinha akapiswa uye hapana efflorescence ichaitika. Saka chiitiko che efflorescence hachina chekuita nekupfapfaidza.
Solution:
1. Iyo silicate content ye basekrete simenti inoderedzwa.
2. Shandisa anti-alkali back coating agent, mhinduro inopinda mudombo kuti ivhare capillary, kuitira kuti mvura, Ca (OH) 2, munyu uye zvimwe zvinhu zvisingagoni kupinda, uye kugura nzira yepan-alkaline phenomenon.
3. Kudzivirira kupindira kwemvura, uye usasasa mvura yakawanda isati yavakwa.
Kurapa kwepan-alkaline phenomenon:
Iyo ibwe efflorescence yekuchenesa mumiriri pamusika inogona kushandiswa. Iyi yekuchenesa mumiriri imvura isina ruvara inopenya inogadzirwa neasiri-ionic surfactants uye zvinonyungudutsa. Iine humwe hunoita pakucheneswa kwemamwe matombo ematombo echisikigo. Asi usati washandisa, ita shuwa kuita diki sampuli test block kuti uedze maitiro uye usarudze kana uchiishandisa.
Kushandiswa kweCellulose muIndasitiri Yekuvaka
1. Simende dhaka: Kuvandudza kuparadzirwa kwejecha-samende, kunatsiridza zvikuru mapurasitiki uye kuchengetwa kwemvura kwedhaka, kuva nemigumisiro pakudzivirira kutsemuka, uye kuwedzera simba resimende.
2. Tile simende: kunatsiridza epurasitiki uye kuchengetwa kwemvura kweakatsikirirwa matairi dhaka, kunatsiridza kunamatira kwematiles, uye kudzivirira chalking.
3. Kupfekedzwa kwezvinhu zvinoramba zvakadai seasbestos: sechinhu chinomisa, fluidity kuvandudza mumiririri, uyewo inovandudza simba rekubatanidza kune substrate.
4. Gypsum coagulation slurry: kunatsiridza kuchengetedza kwemvura uye kugadzirisa, uye kunatsiridza kunamatira kune substrate.
5. Joint simenti: yakawedzerwa kune yakabatana simende yegypsum board kuti ivandudze fluidity uye kuchengetedza mvura.
6. Latex putty: kunatsiridza fluidity uye kuchengetwa kwemvura ye resin latex-based putty.
7. Stucco: Sepaste yekutsiva zvigadzirwa zvechisikigo, inogona kuvandudza kuchengetedza kwemvura uye kuvandudza simba rekubatanidza ne substrate.
8. Coatings: Se plasticizer ye latex coatings, inogona kuvandudza kushanda uye fluidity yekuputira uye putty powders.
9. Kupfapfaidza pendi: Iine mhedzisiro yakanaka pakudzivirira kunyura kwe simende kana latex yekupfapfaidza zvinhu uye mafirita uye kunatsiridza fluidity uye spray pattern.
10. Zvigadzirwa zvechipiri zvesimende uye gypsum: inoshandiswa se extrusion molding binder ye simenti-asbestos nezvimwe zvinhu zve hydraulic kuti zvigadzirise fluidity uye kuwana yunifomu yakaumbwa zvigadzirwa.
11. Fiber wall: Nekuda kweiyo anti-enzyme uye inorwisa mabhakitiriya, inoshanda sebhainda rejecha madziro.
12. Vamwe: Inogona kushandiswa semhepo bubble retaining agent (PC version) kune yakaonda yevhu jecha dhaka uye mudhaka hydraulic operator.
Zvikumbiro muindasitiri yemakemikari
1. Polymerization yevinyl chloride uye vinylidene: Sekusimudzira kugadzikana uye kupararira panguva yepolymerization, inogona kushandiswa pamwe chete nevinyl doro (PVA) hydroxypropyl cellulose (HPC) kudzora chimiro chechidimbu uye kugoverwa kwechidimbu.
2. Adhesive: Sechinamira chemapuranga, chinogona kushandiswa pamwe chete nevinyl acetate latex pendi pane starch.
3. Mishonga yezvipembenene: Yakawedzerwa kune mishonga yezvipembenene nemishonga yesora, inogona kuvandudza maitiro ekunamatira pakupfapfaidza.
4. Latex: Emulsion stabilizer yeasphalt latex, thickener ye styrene-butadiene rubber (SBR) latex.
5. Binder: sebhinda rekugadzira remapenzura nemakrayoni.
Zvishandiso muindasitiri yezvizoro
1. Shampoo: Kuvandudza viscosity ye shampoo, detergent, uye kuchenesa mumiririri uye kugadzikana kwemabhuru.
2. Mushonga wemazino: Kuvandudza kuyerera kwemushonga wemazino.
Zvikumbiro muindasitiri yemishonga
1. Encapsulation: The encapsulation agent inogadzirwa mu organic solvent solution kana aqueous solution yemishonga inoshandiswa, kunyanya kupfapfaidza encapsulation ye granules yakagadzirwa.
2. Slow down agent: 2-3 gramu pazuva, 1-2G nguva imwe neimwe, mhedzisiro ichaonekwa mumazuva 4-5.
3. Madonhwe eziso: Sezvo iyo osmotic pressure yemethylcellulose aqueous solution yakangofanana neyemisodzi, hainyanyi kutsamwisa maziso, saka inowedzerwa kumadonhwe emeso semafuta ekuonana nemboni yeziso.
4. Jelly: sechinhu chekutanga chejelly-semishonga yekunze kana mafuta.
5. Mushonga wekudhibha: semukobvu, mumiriri wekuchengetedza mvura
Nguva yekutumira: Nov-17-2022