1. Zita rechigadzirwa:
01. Zita remakemikari: hydroxypropyl methylcellulose
02. Zita rakazara muChirungu: Hydroxypropyl Methyl Cellulose
03. Chirungu chidimbu: HPMC
2. Zvenyama nemakemikari zvimiro:
01. Kuonekwa: chena kana kuti isina-white powder.
02. Kukura kwechikamu; chiyero chekupasa kwe100 mesh yakakura kupfuura 98.5%; chiyero chekupasa che80 mesh yakakura kupfuura 100%.
03. Carbonization tembiricha: 280～300℃
04. Density inooneka: 0.25～0.70/cm3 (kazhinji inenge 0.5g/cm3), yakananga giravhiti 1.26-1.31.
05. Discoloration tembiricha: 190～200℃
06. Kushungurudzika kwepamusoro: 2% aqueous solution ndeye 42～56dyn/cm.
07. Soluble mumvura uye zvimwe zvinonyungudutsa, zvakadai se ethanol / mvura, propanol / mvura, trichloroethane, nezvimwewo muzvikamu zvakakodzera.
Aqueous solutions is surface active. Kujeka kwepamusoro, kushanda kwakagadzikana, gel tembiricha yezvigadzirwa zvine zvirevo zvakasiyana
Yakasiyana, iyo solubility inoshanduka ne viscosity, iyo yakadzika iyo viscosity, iyo yakanyanya kunyungudika, kuita kweakasiyana zvirevo zve hydroxypropyl methylcellulose (HPMC) ine mimwe misiyano, kupera kwe hydroxypropyl methylcellulose (HPMC) mumvura haina kukanganiswa PH kukosha kwekuita. .
08. Nekuderera kwemethoxyl content, gel point inowedzera, kunyungudika kwemvura kunoderera, uye basa repamusoro rehydroxypropyl methylcellulose (HPMC) rinodererawo.
09. Hydroxypropyl methylcellulose (HPMC) inewo kukwanisa kukora, kusaramba kwemunyu, hupfu hwedota shoma, kugadzikana kwePH, kuchengetedza mvura, kugadzikana kwedimensional, yakanakisisa yekugadzira firimu, uye zvakasiyana-siyana zvekudzivirira enzyme, kupararira maitiro akadai sepabonde uye kunamatira.
Zvitatu, hydroxypropyl methylcellulose (HPMC) maitiro:
Chigadzirwa chinosanganisa akawanda emuviri nemakemikari zvivakwa kuti ive yakasarudzika chigadzirwa chine akawanda mashandisiro, uye akasiyana zvivakwa ndeaya anotevera:
(1) Kuchengeta mvura: Inogona kuchengeta mvura panzvimbo dzine porous semapuranga esimende mabhodhi nezvidhinha.
(2) Magadzirirwo efirimu: Inogona kuumba firimu rakajeka, rakaoma uye rakapfava rine yakanakisa mafuta kuramba.
(3) Organic solubility: Chigadzirwa chacho chinonyungudika mune zvimwe organic solvents, senge ethanol/mvura, propanol/mvura, dichloroethane, uye solution system inoumbwa neaviri organic solvents.
(4) Thermal gelation: Kana iyo aqueous solution yechigadzirwa ichipisa, ichaita gel, uye gel yakaumbwa ichava mhinduro zvakare mushure mekutonhora.
(5) Chiitiko chepamusoro: Ipa chiitiko chepamusoro mumhinduro kuti uwane iyo inodiwa emulsification uye inodzivirira colloid, pamwe nekudzikamisa kwechikamu.
(6) Kumiswa: Inogona kudzivirira kunaya kwezvimedu zvakasimba, nokudaro zvichidzivisa kuumbwa kwe sediment.
(7) Protective colloid: inogona kudzivirira madonhwe uye zvimedu kubva pakubatana kana kubatana.
(8) Kunamira: Inoshandiswa sechinamira yemavara, zvigadzirwa zvefodya, uye zvigadzirwa zvemapepa, ine basa repamusoro.
(9) Kunyungudika kwemvura: Chigadzirwa chacho chinogona kunyungudutswa mumvura muhuwandu hwakasiyana, uye huwandu hwayo hwepamusoro hunongogumira ne viscosity.
(10) Non-ionic inertness: Chigadzirwa i-non-ionic cellulose ether, isingabatanidzi nesimbi yemunyu kana mamwe ayoni kuti igadzire mvura isinganyunguriki.
(11) Acid-base kugadzikana: yakakodzera kushandiswa mukati mehuwandu hwePH3.0-11.0.
(12) Kusanaka uye kunhuhwirira, kusakanganiswa nemetabolism; inoshandiswa sechikafu uye zvinodhaka zvinowedzera, hazvizogadziriswi muzvokudya uye hazvizopi macalorie.
4. Hydroxypropyl methylcellulose (HPMC) nzira yekubvisa:
Kana hydroxypropyl methylcellulose (HPMC) zvigadzirwa zvinowedzerwa zvakananga kumvura, zvinobatana zvobva zvanyungudika, asi kupera uku kunonoka uye kwakaoma. Pane nzira nhatu dzakakurudzirwa dzekumisa pazasi, uye vashandisi vanogona kusarudza nzira iri nyore zvichienderana nekushandisa kwavo:
1. Nzira yemvura inopisa: Sezvo hydroxypropyl methylcellulose (HPMC) isinganyungudika mumvura inopisa, danho rekutanga rehydroxypropyl methylcellulose (HPMC) rinogona kuparadzirwa zvakaenzana mumvura inopisa, uye kana yatonhodzwa, matatu A akajairika nzira inotsanangurwa se. zvinotevera:
1). Isa huwandu hunodiwa hwemvura inopisa mumudziyo uye kupisa kusvika ku70 ° C. Zvishoma nezvishoma wedzera hydroxypropyl methylcellulose (HPMC) pasi pekusimudzira zvishoma nezvishoma, iyo hydroxypropyl methylcellulose (HPMC) inotanga kuyangarara pamusoro pemvura, uye zvishoma nezvishoma inogadzira slurry, inotonhorera slurry pasi pekukurudzira.
2). Pisa 1/3 kana 2/3 (chiyero chinodiwa) chemvura mumudziyo wopisa kusvika 70°C. Zvinoenderana neiyo nzira ye1), paradzira hydroxypropyl methylcellulose (HPMC) kugadzirira inopisa mvura slurry Wobva wawedzera huwandu hwasara hwemvura inotonhora kana mvura yechando mumudziyo, wobva wawedzera yataurwa pamusoro apa hydroxypropyl methylcellulose (HPMC) inopisa mvura slurry kune mvura inotonhora, uye kurunga, uye wozotonhodza musanganiswa.
3). Isa 1/3 kana 2/3 yehuwandu hunodiwa hwemvura mumudziyo wopisa kusvika 70°C. Maererano nenzira ye1), paradzira hydroxypropyl methylcellulose (HPMC) kugadzirira slurry yemvura inopisa; Iyo yakasara yemvura inotonhora kana yechando inowedzerwa kune inopisa mvura slurry uye musanganiswa unotonhodzwa mushure mekukurudzira.
2. Powder mixing method: hydroxypropyl methylcellulose (HPMC) powder particles uye imwe yakaenzana kana yakawanda yezvimwe zvinhu zvehupfu zvinoparadzirwa zvakakwana nekusanganiswa kwakaoma, uye zvino kunyungudutswa mumvura, ipapo hydroxypropyl methylcellulose Base cellulose (HPMC) inogona kunyungudutswa pasina agglomeration. . 3. Organic solvent wetting method: pre-disperse kana wet hydroxypropyl methylcellulose (HPMC) ine organic solvents yakadai se ethanol, ethylene glycol kana mafuta, uye wozoinyungudutsa mumvura. Panguva ino, hydroxypropyl methylcellulose (HPMC) inogonawo kunyungudika zvakanaka.
5. Kushandiswa kukuru kwehydroxypropyl methylcellulose (HPMC):
Hydroxypropyl methylcellulose (HPMC) inogona kushandiswa seyakakora, dispersant, emulsifier uye film-forming agent. Zvigadzirwa zvayo zvemaindasitiri-giredhi zvinogona kushandiswa mumakemikari emazuva ese, zvemagetsi, zvekugadzira resin, kuvaka uye machira.
1. Kumiswa kwepolymerization:
Mukugadzira resin dzekugadzira senge polyvinyl chloride (PVC), polyvinylidene chloride uye mamwe macopolymers, suspension polymerization inonyanya kushandiswa uye inofanirwa kudzikamisa kumiswa kwemahydrophobic monomers mumvura. Semvura inonyungudika polymer, hydroxypropyl methylcellulose (HPMC) zvigadzirwa zvine yakanakisa pamusoro pekuita uye kuita senge colloidal inodzivirira mumiriri, inogona kudzivirira zvinobudirira kuunganidzwa kwepolymer particles. Uyezve, kunyangwe hydroxypropylmethylcellulose (HPMC) iri mvura-inonyungudika polymer, zvakare inonyungudika zvishoma muma hydrophobic monomers uye inowedzera porosity yemamonomers ayo mapolymeric particles anogadzirwa, kuitira kuti ikwanise Inopa mapolymer ane kugona kwakanyanya kubvisa asara monomers. uye kuwedzera kutorwa kweplasticizers.
2. Mukugadzirwa kwezvinhu zvekuvaka, hydroxypropyl methylcellulose (HPMC) inogona kushandiswa:
1). Adhesive uye caulking agent ye gypsum-based adhesive tepi;
2). Kusungirirwa kwezvidhinha, matairi uye nheyo;
3). Plasterboard-based stucco;
4). Cement-based structural plaster;
5). Muchigadziro chepende uye kubvisa pendi.
Nguva yekutumira: May-24-2023