HPMC, inozivikanwawo se hydroxypropyl methylcellulose, ikomisheni iri yemhuri ye cellulose ethers. Inotorwa kubva ku cellulose, yakasikwa polymer inowanikwa mumiti yesero madziro. HPMC inoshandiswa zvakanyanya muindasitiri yekuvaka nekuda kwekuita kwayo kwakawanda.
HPMC inowanzoshandiswa seyakakora, bhainda, firimu rekare uye rekuchengetedza mvura mumidziyo yekuvaka senge simende-based zvigadzirwa, mataira anonamira, plasters, plasters uye grouts. Chimiro chayo chemakemikari inobvumira kuti itore mvura uye igadzire gel-sechinhu chinovandudza kushanda, kunamatira uye sag kuramba kwezvinhu zvekuvaka.
Heano mamwe akakosha zvivakwa uye mashandisiro eHPMC muindasitiri yekuvaka:
Kuchengeta mvura: HPMC inotora uye inochengeta mvura, ichidzivirira simende-yakavakirwa zvinhu kubva pakuoma nekukasira. Izvi zvinobatsira kuderedza kuputika, kunatsiridza hydration uye inowedzera simba rose uye kusimba kwezvigadzirwa zvekuvaka.
Yakavandudzwa processability: HPMC inoshanda senge rheology modifier, ichipa zvirinani processability uye nyore kushandisa kwezvinhu zvekuvaka. Iyo inosimudzira kupararira uye kudonha kuramba kwematope uye plasters, zvichiita kuti zvive nyore kubata nekuisa.
Kunamatira uye kubatana: HPMC inovandudza kunamatira pakati pezvivakwa zvakasiyana zvekuvaka. Iyo inowedzera kusimba kwechisungo chekunamatira mataira, plasters uye plasters, kuve nechokwadi chekunamatira zviri nani kune substrates senge kongiri, huni uye mataira.
Sag Resistance: HPMC inoderedza sag kana kudonha kwezvinhu zvakamira senge tile inonamira kana primer panguva yekushandisa. Izvi zvinobatsira kuchengetedza ukobvu hunodiwa uye kudzivirira kuputika kana kudonha.
Kugadzira Firimu: Kana HPMC yaoma, inoumba firimu rakatetepa, rinochinjika, rakajeka. Iyi firimu inogona kupa nani kudzivirira kwemvura, kupikisa kwemamiriro ekunze uye kuchengetedzwa kwepamusoro kwezvishandiso zvekuvaka.
Nguva yekutumira: Jun-06-2023