1. Hunhu hwakasiyana
Hydroxypropyl methylcellulose: chena kana isina-chena fibrous kana granular poda, yemhando dzakasiyana-siyana dzisiri-ionic cellulose yakasanganiswa ethers.Iyo semi-synthetic, isingashande, viscoelastic polymer.
Hydroxyethyl cellulose: (HEC) ichena kana yakareruka yeyero, isinganhuhwi, isina-chepfu fibrous kana poda yakasimba, yakagadzirwa ne etherification yealkaline cellulose uye ethylene oxide (kana chloroethanol).Iyo ndeye asiri-ionic soluble cellulose ethers.
2. Kushandiswa kwakasiyana
Hydroxypropyl methylcellulose: Inoshandiswa seyakakora, dispersant uye stabilizer muindasitiri yekuputira, uye ine kuenderana kwakanaka mumvura kana organic solvents.Sekubvisa pendi;seanoparadzira mukugadzirwa kwepolyvinyl chloride, ndiyo inonyanya kubatsira mugadziri wePVC nekumiswa kwepolymerization;inoshandiswawo zvakanyanya mumatehwe, zvigadzirwa zvemapepa, kuchengetedza michero nemiriwo uye maindasitiri emachira.
Hydroxyethyl cellulose: inoshandiswa seanonamira, surfactant, colloidal protective agent, dispersant, emulsifier uye dispersion stabilizer, etc. Iine zvakawanda zvakasiyana-siyana zvekushandisa mukuputira, inki, fiber, dyeing, papermaking, cosmetics, pesticides, mineral processing, kubviswa kwemafuta. uye mushonga.
3. Yakasiyana solubility
Hydroxypropyl methylcellulose: Inenge isina kunyungudika mune absolute ethanol, ether, uye acetone;inoputika kuva yakajeka kana zvishoma turbid colloidal solution mumvura inotonhora.
Hydroxyethyl cellulose: ine zvimiro zvekukora, kumisa, kubatana, emulsifying, kuparadzira, uye kuchengetedza unyoro.Mhinduro dzine akasiyana viscosity siyana dzinogona kugadzirirwa.Iyo ine yakasarudzika yakanaka munyu solubility kune electrolytes.
Hydroxypropyl methylcellulose (HPMC) Muviri uye kemikari zvivakwa:
1. Kuonekwa: MC yakachena kana inenge yakachena fibrous kana granular powder, isina kunhuwa.
2. Properties: MC inenge isinganyungudika mu absolute ethanol, ether uye acetone.Inoparadzira uye inoputika nekukurumidza mumvura inopisa pa80 ~ 90 ℃, uye inonyungudika nekukurumidza mushure mekutonhora.Iyo aqueous solution yakanyatsogadzikana pakupisa kwekamuri uye inogona gel pakupisa kwepamusoro, uye gel inogona kuchinja nemhinduro nekushisa.Iyo ine yakanakisa wettability, dispersibility, adhesion, thickening, emulsification, kuchengetwa kwemvura uye firimu-kugadzira zvinhu, pamwe nekusamira kwegirisi.Iyo firimu yakaumbwa ine yakanakisa kuoma, kuchinjika uye pachena.Nekuti isiri-ionic, inogona kuenderana nemamwe emulsifiers, asi iri nyore kuisa munyu kunze uye mhinduro yakagadzikana muhuwandu hwePH2-12.
3. Density inooneka: 0.30-0.70g / cm3, density inenge 1.3g / cm3.
2. Disolution nzira:
Chigadzirwa cheMC chinowedzerwa zvakananga kumvura, chinosanganiswa uye chobva chanyungudika, asi kupera uku kunonoka uye kwakaoma.Nzira dzinotevera nhatu dzekunyungudika dzinotaurwa, uye mushandisi anogona kusarudza nzira yakanakira zvinoenderana nemamiriro ekushandisa:
1. Nzira yemvura inopisa: Sezvo MC isinganyungudika mumvura inopisa, MC inogona kuparadzirwa zvakaenzana mumvura inopisa panguva yekutanga.Kana ichinge yatonhodzwa, nzira mbiri dzakajairwa dzinotsanangurwa sezvizvi:
1).Isa huwandu hunodiwa hwemvura inopisa mumudziyo uye kupisa kusvika ku70 ° C.Zvishoma nezvishoma wedzera MC pasi pekutambudzika kunononoka, tanga kuyangarara pamusoro pemvura, uye zvishoma nezvishoma gadzira slurry, uye kutonhorera slurry pasi pekushungurudzika.
2).Wedzera 1/3 kana 2/3 yehuwandu hunodiwa hwemvura mumudziyo uye upise kusvika 70 ℃.Tevedzera nzira ye1) kuparadzira MC kugadzirira inopisa mvura slurry;wobva wawedzera huwandu hwakasara hwemvura inotonhora kana mvura yechando Mumvura inopisa slurry, inotonhorera musanganiswa mushure mekusimudzira.
2. Powder kusanganisa nzira: Sanganisa MC upfu zvimedu pamwe akaenzana kana yakakura uwandu zvimwe upfu zvokubikisa zvizere kuaparadzira nokuoma kusanganisa, uye wobva wawedzera mvura kunyunguduka, ipapo MC anogona kunyungudutswa pasina agglomerating.
3. Organic solvent wetting method: pre-disperse kana moisten MC ine organic solvent, yakadai se ethanol, ethylene glycol kana mafuta, uye wobva wawedzera mvura kuti iparadze, ipapo MC inogonawo kunyungudutswa zvakanaka panguva ino.
3. Chinangwa:
Ichi chigadzirwa chinoshandiswa zvakanyanya mukuvaka zvivakwa, zvekuvakisa, dispersive coatings, Wallpaper paste, polymerization additives, pendi yekubvisa, dehwe, inki, bepa, etc. Semuyenzaniso, inoshandiswa sechibhainda, chikobvu uye chinochengeta mvura mumidziyo yekuvaka, sechinhu chinoumba firimu uye chinokora muindasitiri yekupfekedza, uye inoshandiswa zvakanyanya muminda yakadai sekuchera petroleum uye indasitiri yemakemikari yemazuva ese. .
Izvo zvemuviri uye zvemakemikari zvimiro zvemethyl cellulose (MC):
3. Kuonekwa: MC yakachena kana inenge yakachena fibrous kana granular powder, isina kunhuwa.
Zvivakwa: MC inenge isinganyungudike mune absolute ethanol, ether uye acetone.Inoparadzira uye inozvimba nekukurumidza mumvura inopisa ye80 ~ 90> ℃, uye inonyungudika nekukurumidza mushure mekutonhora.Iyo aqueous solution yakanyatsogadzikana pane yakajairika tembiricha uye inogona gel pakupisa kwakanyanya, uye gel inogona kuchinja nemhinduro nekushisa.Iyo ine yakanakisa wettability, dispersibility, adhesion, thickening, emulsification, kuchengetwa kwemvura uye firimu-kugadzira zvinhu, pamwe nekusamira kwegirisi.Iyo firimu yakaumbwa ine yakanakisa kuoma, kuchinjika uye pachena.Nekuti isiri-ionic, inogona kuenderana nemamwe emulsifiers, asi iri nyore kuisa munyu kunze uye mhinduro yakagadzikana muhuwandu hwePH2-12.
1.Inooneka density: 0.30-0.70g / cm3, density inenge 1.3g / cm3.
Forth.Dissolution nzira:
MC> Chigadzirwa chacho chinowedzerwa zvakananga kumvura, chinozobatanidza uye chobva chanyunguduka, asi kupera uku kunononoka uye kwakaoma.Idzi nzira nhatu dzinotevera dzekumisa dzinokurudzirwa, uye vashandisi vanogona kusarudza nzira iri nyore zvichienderana nemamiriro ekushandisa:
1. Nzira yemvura inopisa: Sezvo MC isinganyungudika mumvura inopisa, MC inogona kuparadzirwa zvakaenzana mumvura inopisa panguva yekutanga.Kana ichinge yatonhodzwa, nzira mbiri dzakajairwa dzinotsanangurwa sezvizvi:
1).Isa huwandu hunodiwa hwemvura inopisa mumudziyo uye kupisa kusvika ku70 ° C.Zvishoma nezvishoma wedzera MC pasi pekutambudzika kunononoka, tanga kuyangarara pamusoro pemvura, uye zvishoma nezvishoma gadzira slurry, uye kutonhorera slurry pasi pekushungurudzika.
2).Isa 1/3 kana 2/3 yehuwandu hunodiwa hwemvura mumudziyo wopisa kusvika 70°C.Tevedzera nzira mu1) kuparadzira MC kugadzirira inopisa mvura slurry;wobva wawedzera huwandu hwakasara hwemvura inotonhora kana mvura yechando Mumvura inopisa slurry, inotonhorera musanganiswa mushure mekusimudzira.
Powder kusanganisa nzira: yakaoma kusanganisa MC upfu zvimedu pamwe akaenzana kana hombe uwandu zvimwe upfu zvokubikisa zvizere kuaparadzira, uye wobva wawedzera mvura kuzvinyungudutsa, ipapo MC anogona kunyungudutswa pasina agglomeration.
3. Organic solvent wetting method: paradzira kana kunyorovesa MC ne organic solvent, yakadai se ethanol, ethylene glycol kana mafuta, uye wobva wawedzera mvura kuti inyunguduse.Ipapo MC inogona zvakare kunyungudika zvakanaka.
Shanu.Chinangwa:
Ichi chigadzirwa chinoshandiswa zvakanyanya mukuvaka zvivakwa, zvekuvakisa, dispersive coatings, Wallpaper paste, polymerization additives, pendi yekubvisa, dehwe, inki, bepa, etc. Semuyenzaniso, inoshandiswa sechibhainda, chikobvu uye chinochengeta mvura mumidziyo yekuvaka, sechinhu chinoumba firimu uye chinokora muindasitiri yekupfekedza, uye inoshandiswa zvakanyanya muminda yakadai sekuchera petroleum uye indasitiri yemakemikari yemazuva ese. .
1. Indasitiri yekuvaka: Sechinhu chinochengetedza mvura uye chinodzoreredza simende dhaka, inoita kuti dhaka ripombike.Inoshandiswa sebhainda mupurasita, purasita, putty poda kana zvimwe zvekuvaka kuvandudza kupararira uye kurebesa nguva yekushanda.Inogona kushandiswa kunama mataira eceramic, marble, kushongedza kwepurasitiki, paste enhancer, uye zvakare inogona kuderedza huwandu hwesimende.Iyo yekuchengeta mvura zvimiro zveHPMC inodzivirira slurry kubva pakutsemuka nekuda kwekuoma nekukurumidza mushure mekushandisa, uye kuwedzera simba mushure mekuoma.
2. Ceramic kugadzira indasitiri: yakashandiswa zvakanyanya sebhainda mukugadzira zvigadzirwa zveceramic.
3. Indasitiri yepende: Sezvinoita thickener, dispersant uye stabilizer mumhizha yepende, ine kuwirirana kwakanaka mumvura kana organic solvents.Sekubvisa pendi.
4. Ink kudhinda: Sezvinoita thickener, dispersant uye stabilizer muindasitiri yeinki, ine kugarisana kwakanaka mumvura kana organic solvents.
5. Plastics: inoshandiswa se mold release agents, softeners, lubricant, nezvimwewo.
6. Polyvinyl chloride: Inoshandiswa seanoparadzanisa mukugadzirwa kwepolyvinyl chloride uye ndiyo inonyanya kubatsira mumiririri wekugadzirira kwePVC nekumisa polymerization.
7. Vamwe: Ichi chigadzirwa chinoshandiswawo zvakanyanya mumatehwe, zvigadzirwa zvemapepa, kuchengetedza michero nemiriwo uye maindasitiri emachira.
8. Indasitiri yemishonga: kuvhara zvinhu;zvinhu zvemufirimu;chiyero-chinodzora zvinhu zvepolymer zvekugadzirira kunononoka-kuburitswa;stabilizers;suspending agents;tablet binders;thickeners.Njodzi dzehutano: chigadzirwa ichi chakachengeteka uye chisina chepfu, uye chinogona kushandiswa sechikafu chekuwedzera , Hapana kupisa, hapana kutsamwa kweganda uye mucous membrane kusangana.Kazhinji inoonekwa seyakachengeteka (FDA1985), inobvumidzwa yezuva nezuva ye25mg/kg (FAO/WHO 1985), uye zvekudzivirira zvinofanirwa kupfekwa panguva yekushanda.
Kukanganisa kwezvakatipoteredza: Dzivisa kukanda zvisina tsarukano kukonzeresa kusvibiswa kwemhepo neguruva rinobhururuka.
Njodzi dzemuviri nemakemikari: Dzivisa kusangana nezvinopisa moto, uye dzivirira kuumbwa kwehuruva yakawanda munzvimbo yakavharwa kudzivirira njodzi dzinoputika.
Chinhu ichi chinonyatso shandiswa chete seyakakora, iyo isina kunaka kune ganda.
Nguva yekutumira: Nov-24-2021