Chii chakakodzera viscosity yehydroxypropyl methylcellulose (HPMC)?
Putty poda inowanzoita 100,000 yuan, uye zvinodiwa zvedhaka 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.
Ndedzipi nzira dzekupedza hydroxypropyl methylcellulose (HPMC)?
(1) Huchena: Kunyangwe Baidu isingakwanisi kuona kana HPMC iri nyore kushandisa, uye kana maajenti ekuchena akawedzerwa panguva yekugadzira, kunaka kwayo kuchakanganiswa. Zvisinei, zvizhinji zvezvigadzirwa zvakanaka zvine kuchena kwakanaka.
(2) Fineness: Kunaka kweHPMC kunowanzo kuve ne80 mesh uye zana mesh, uye 120 mesh ishoma. Yakawanda HPMC inogadzirwa muHebei ndeye 80 mesh. Kunyanya kunaka, kazhinji kutaura, zviri nani.
(3) Light transmittance: isa hydroxypropyl methylcellulose (HPMC) mumvura kuti iite transparent colloid, uye tarisa kupenya kwayo. Iyo yakakura iyo mwenje transmittance, zviri nani, zvichiratidza kuti kune mashoma insolubles mairi. . Kupinda kwemareactors akatwasuka kazhinji kwakanaka, uye kuya kwemareactors akachinjika kwakaipisisa, asi hazvireve kuti kunaka kwemaactors akatwasuka kuri nani pane emareactor akachinjika, uye kunaka kwechigadzirwa kunotarwa nezvinhu zvakawanda. (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.
Ndeipi basa guru rekushandiswa kweHPMC mune putty powder, uye inoitika nemakemikari?
Mune putty poda, HPMC inoita 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.
Zvinhu zvikuru zvinoumba ash calcium powder ndezvi: musanganiswa weCa(OH)2, CaO uye zvishoma zveCaCO3, CaO+H2O=Ca(OH)2 —Ca(OH)2+CO2=CaCO3↓+H2O ash calcium. 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.
Hukama huri pakati pe viscosity uye tembiricha yeHPMC, chii chinofanira kutariswa mune inoshanda application?
Iyo viscosity yeHPMC inopindirana nekushisa, kureva kuti, viscosity inowedzera sezvo tembiricha inoderera. Iyo viscosity yechigadzirwa yatinowanzo taura nezvayo inoreva mhedzisiro yekuedzwa kwayo 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 insulation mortar rubber powder uye vitrified microbead insulation mortar.
Chikonzero: high viscosity, dhaka haisi nyore kudonha, sagging, iyo inovandudza kuvaka.
Nguva yekutumira: May-18-2023