Hydroxypropylmethylcellulose (HPMC) musanganiswa unoshanda unoshandiswa zvakanyanya mumhando dzakasiyana dzekushandisa muindasitiri yekuvaka. Hunhu hwayo hwakasiyana hunoita kuti ive yekuwedzera yakakosha mune zvekuvakisa, ichipa yakagadziridzwa mashandiro uye inokwidziridzwa zvivakwa kune akasiyana zvigadzirwa.
1. Nhanganyaya kuHPMC:
Hydroxypropylmethylcellulose is cellulose ether inotorwa kubva kumapolima echisikigo, kunyanya cellulose. Inogadzirwa nekemikari inoshandura cellulose uchishandisa propylene oxide uye methyl chloride, zvichiita kuti pave nekomboni ine hydroxypropyl uye methyl mapoka akabatanidzwa kune cellulose musana. Dhigirii rekutsiviwa kwemapoka aya rinokanganisa mashandiro eHPMC.
2. Kuita kweHPMC:
Kuchengeta Mvura: Chimwe chezvinhu zvakakosha zveHPMC kugona kwayo kuchengetedza mvura. Mukuvaka zvikumbiro, izvi zvakakosha kuchengetedza kushanda kwedhaka uye nekuona hydration yakakodzera yesimende zvinhu.
Thickener: HPMC chikobvu chinoshanda icho chinowedzera viscosity yezvinhu zvekuvaka senge zvinonamira, machira uye majoini makomisheni.
Kuvandudzwa kwekushanda: HPMC inobatsira kuvandudza kushanda uye kudonha kuchengetwa kwezvinhu zvesimende, zvichiita kuti zvive nyore kubata nekushandisa.
Kugadzirisa kutonga: Inobata nguva yekugadzika yesimende zvinhu uye inopa kutonga kuri nani pamusoro pekugadzirisa maitiro.
Kugadzira Firimu: HPMC inoumba firimu rakatetepa, rinochinjika pamusoro, richibatsira kuita kuti pendi igare yakasimba uye isingapinde mvura.
Yakavandudzwa Adhesion: Inosimudzira kunamatira kwezvinhu zvekuvaka, kukurudzira zvirinani kubatana pakati pe substrates.
3. Kushandiswa kweHPMC mukuvaka:
3.1 Madhaka nemapurasita:
Kuchengeta Mvura: HPMC inowanzoshandiswa mumadhaka uye mapurasita kunatsiridza kuchengetwa kwemvura, kudzivirira kuoma nguva isati yakwana yemusanganiswa uye kuve nechokwadi chekuti simende yakakwana.
Kushanda: Kuwedzerwa kweHPMC kunowedzera kushanda kwedhaka, kuita kuti kuvaka uye kupedza kuve nyore.
Adhesion: Inonatsiridza kunamira kwedhaka uye stucco kune akasiyana ma substrates, zvichikonzera kusimba, kusimba kwekupedzisira.
3.2 Mataira anonamira uye magrout:
Slip Resistance: Mumataira anonamira, HPMC inobatsira kudzora kutsvedza kuramba kuti ive nechokwadi chekuti tile inonamira zvakasimba kumusoro.
Kukora: Semushonga wekukora, HPMC inobatsira kuenderana kwakaringana kwematairi anonamira uye grouts.
Kuchengetwa kwemvura: Inodzivirira kukurumidza kubuda kwemvura uye inosimudzira kurapa kwakanaka kweanonamatira uye grout.
3.3 Cement-based rendering:
Crack Resistance: HPMC inokwidziridza kuchinjika uye kutsemuka kuramba kwesemende-based render, ichipa kusimba kune yakapera nzvimbo.
Consistency: Inobatsira kuchengetedza inodiwa kuenderana kweiyo render panguva yekuvaka, kudzivirira kudonha uye kuve nechokwadi cheunifomu ukobvu.
3.4 Kuzvimiririra makomisheni:
Kuyerera: Pakati pe-self-leveling makomisheni, HPMC inovandudza kuyerera, zvichiita kuti kupararira uye kuenzana kuve nyore.
Kuchengeta Mvura: Inodzivirira kurasikirwa nekukurumidza kwehunyoro, kuve nechokwadi chekurapa kwakakodzera uye kukura kwezvinhu zvinodiwa.
3.5 Gypsum zvigadzirwa:
Consistency: HPMC inoshandiswa mune gypsum-based zvigadzirwa kudzora kuenderana uye kuseta nguva.
Kuchengetwa kwemvura: Inodzivirira kuomesa nguva isati yakwana yemusanganiswa wepurasita uye inosimudzira hydration yakakwana.
4. Mabhenefiti ekushandisa HPMC mukuvaka:
Yakavandudzwa Kugadziriswa: HPMC inosimudzira kugadziridzwa kwezvinhu zvekuvaka, zvichiita kuti zvive nyore kubata nekushandisa.
Kuchengetedzwa kwemvura: Iyo yekuchengeta mvura zvivakwa zveHPMC zvinobatsira mukurapa kunoshanda kwesimende zvinhu.
Kubatana uye kusungirirana: Inovandudza chisungo uye chisungo chezvivakwa zvekuvaka zvigadzirwa, nekudaro zvichiita kuti chimiro chive chakasimba uye chakasimba.
Kukora: Semukobvu, HPMC inopa viscosity inodiwa kune akasiyana ezvivakwa zvekuvaka kuti ive nechokwadi chekushandisa kwakaringana.
Crack resistance: Kuwedzerwa kweHPMC kunosimudzira kuchinjika uye kutsemuka kuramba kwenzvimbo yakapera.
Kuisa Nguva Yekudzora: HPMC inopa kutonga kuri nani pamusoro penguva yekumisikidza yesimende-yakavakirwa zvinhu.
5. Matambudziko nekufunga:
Dosage Kudzora: Chaiyo dosage yakakosha kuti uwane kuita kwaunoda uye kushandisa zvakanyanya HPMC kunogona kukonzera mhedzisiro.
Kugarisana: Kuenderana nezvimwe zvinowedzera uye zvekuvaka zvinofanirwa kutariswa kudzivirira chero maitiro akashata.
Environmental Impact: Nepo HPMC pachayo ichionekwa seyakachengetedzeka, kukanganisa kwezvakatipoteredza kwekugadzirwa kwayo uye kuraswa kunofanirwa kutariswa.
6. Mhedziso:
Muchidimbu, hydroxypropyl methylcellulose (HPMC) inoita basa rakakosha muindasitiri yekuvaka, ichipa huwandu hwakawanda hwezvakanakira mumhando dzakasiyana dzekushandisa. Zvimiro zvayo zvakasiyana-siyana zvakadai sekuchengetedza mvura, kukora uye kunamatwa kwakagadziridzwa kunoita kuti ive yekuwedzera yakakosha mukugadzirwa kwematope, zvinonamira, plasters nezvimwe zvekuvaka. Kunyangwe zvipingamupinyi zvine kudzora dosi uye mamiriro ezvakatipoteredza, HPMC yakanaka mhedzisiro pakuita uye kusimba kwezvigadzirwa zvekuvaka inoita kuti ive chikamu chakakosha cheyezvino kuvaka kit. Sezvo indasitiri yekuvaka ichienderera mberi nekushanduka, HPMC ingangoramba iri mutambi akakosha mukuvandudza kunaka uye kugona kwezvinhu zvekuvaka uye maitiro.
Nguva yekutumira: Zvita-18-2023