HPMC, zita rizere ndiHydroxypropyl Methylcellulose, ikemikari chinhu chinowanzoshandiswa mukuvaka, kunyanya mukugadzirwa kwemadziro putty. HPMC is nonionic cellulose ether ine mvura yakanaka solubility uye multifunctionality. Inoshandiswa zvakanyanya mukuvaka, mushonga, chikafu, cosmetics uye mamwe minda.
1. Chimiro chemakemikari uye zvinhu zveHPMC
HPMC inogadzirwa nekugadziriswa kwemakemikari echisikigo cellulose. Chimiro chayo chikuru chemakemikari ndechekuti iwo hydroxyl mapoka e cellulose anotsiviwa zvishoma ne methyl uye hydroxypropyl mapoka. Ichi chimiro chinopa HPMC yakasarudzika yemuviri uye kemikari zvivakwa. Inogona kunyungudika nekukurumidza mumvura kuti iite yakajeka colloidal mhinduro, uye ine akawanda mabasa akadai sekukora, kumiswa, adhesion, emulsification, kuumbwa kwemafirimu uye kuchengetedza mwando.
2. Basa reHPMC mumadziro putty
Mune formula yemadziro putty, HPMC inonyanya kutamba mabasa anotevera:
Kuomesa mhedzisiro: HPMC inogona kuwedzera zvakanyanya viscosity ye putty, ichiita kuti isanyanya kudonha panguva yekuvaka, nekudaro ichiva nechokwadi chekuti putty layer inovhara madziro zvakaenzana uye zvakanaka.
Kuchengetwa kwemvura: HPMC ine simba rekuchengetedza mvura, iyo inogona kudzivirira zvinobudirira kukurumidza kurasikirwa kwemvura panguva yekuomeswa kwe putty. Iyi ficha inovimbisa kurapa kwakajairwa uye kuomarara kweputty uye inodzivirira matambudziko akadai sekuomesa, kuputika uye kuita hupfu.
Lubrication uye kuita kwekuvaka: Kuwedzerwa kweHPMC kunogona kuvandudza lubricity ye putty, zvichiita kuti chivakwa chive chakapfava. Inogona zvakare kuwedzera nguva yekuvhura yeputty (kureva, iyo nguva iyo putty inoramba yakanyorova), zvichiita kuti zvive nyore kune vashandi vekuvaka kushanda.
Kunamatira uye kuumbwa kwemafirimu: HPMC ine zvimwe zvekunamira zvivakwa, izvo zvinogona kusimudzira kunamatira pakati peputty nemadziro uye kuderedza njodzi yekudurura uye kupaza. Uye zvakare, HPMC inogona zvakare kugadzira firimu rekudzivirira kuti riwedzere kuvandudza kusimba uye kutsemuka kuramba kweiyo putty.
3. Nzira yekushandisa sei HPMC uye kudzivirira
Mugadziriro yekugadzira putty, HPMC inowanzosanganiswa nedzimwe dzakaoma hupfu mufomu yehupfu, uye yobva yanyungudika nekushanda panguva yekusanganisa nzira yekuwedzera mvura. Zvichienderana neiyo putty formula, huwandu hweHPMC hwakawedzerwa hunowanzo pakati pe0.1% ne0.5%, asi iyo chaiyo mari inofanirwa kugadziridzwa zvinoenderana nezvinodiwa zveputty uye mamiriro ekuvaka.
Iwe unofanirwa kuterera kune anotevera mapoinzi paunenge uchishandisa HPMC:
Dissolution nzira: HPMC inonyungudika nyore nyore mumvura inotonhora, saka inokurudzirwa kuisanganisa nekadiki diki yehupfu hwakaoma kutanga, wozoiwedzera kumvura uye kurunga. Dzivisa zvakananga kuisa HPMC muhombe yakawanda yemvura kudzivirira agglomeration.
Tembiricha pesvedzero: Kunyungudika kweHPMC kunokanganisa tembiricha. Dissolution inononoka pane tembiricha yakaderera uye nguva yekukurudzira inoda kuwedzerwa zvakafanira. Kupisa kwakanyanya kunogona kuita kuti kunyungudika kukurumidze, saka mamiriro ekuvaka anoda kugadziridzwa zvakakodzera.
Kudzora kwemhando: Hunhu hweHPMC pamusika hauna kuenzana. Zvigadzirwa zvine hunhu hwakavimbika zvinofanirwa kusarudzwa panguva yekuvaka kuti ive nechokwadi chekuita kwakagadzikana kweiyo putty.
4. Zvimwe zvinoshandiswa zveHPMC mumunda wezvivakwa zvekuvaka
Pamusoro pekushandisa kwayo kwakakura mumadziro putty, HPMC ine zvimwe zvakawanda zvinoshandiswa mumunda wezvivakwa zvekuvaka. Inoshandiswa mu ceramic tile adhesives, gypsum zvigadzirwa, self-leveling dhaka uye zvimwe zvinhu kukora, kuchengetedza mvura uye kunatsiridza mashandiro ekuvaka. Pamusoro pezvo, HPMC inoshandiswawo zvakanyanya mumachira, pendi yelatex, matope ekuvaka uye zvimwe zvinhu, ichiva chinhu chakakosha chemakemikari mundima yekuvaka.
5. Mafambiro ebudiriro yeramangwana
Nekusimuka kwekuvakwa kwegirinhi uye pfungwa dzekuchengetedza kwezvakatipoteredza, zvinodiwa zvepamusoro zvakaiswa pakuchengetedzwa kwezvakatipoteredza kwemakemikari ekuwedzera mune zvekuvaka. Sekuwedzera kune hushamwari kwezvakatipoteredza, HPMC icharamba ichikura mune ramangwana munzira yekuvandudza mashandiro, kuderedza mitengo, uye kuderedza kukanganiswa kwezvakatipoteredza. Pamusoro pezvo, zvigadzirwa zveHPMC zvakagadziridzwa zvemhando dzakasiyana dzekushandisa zvinozoitawo maitiro emusika, zvichiwedzera kusimudzira hunyanzvi uye kuvandudzwa kwezvinhu zvekuvaka.
Iko kushandiswa kweHPMC mumadziro putty uye zvimwe zvekuvaka zvinopa vimbiso yakakosha yekuvandudza kunaka kwekuvaka uye kushanda nesimba. Kukosha kwaro mundima yekuvaka kunozviratidza.
Nguva yekutumira: Aug-16-2024