Kusiyana pakati peHEC neHPMC

HEC (Hydroxyethyl Cellulose) uye HPMC (Hydroxypropyl Methylcellulose) ese ari maviri anoshandiswa zvakanyanya muindasitiri yependi seanokora uye rheology modifiers. Nepo ivo vachigovana zvimwe zvakafanana, kune zvakare misiyano yakakosha muzvivakwa zvavo uye mashandisiro.

Imwe yemisiyano mikuru pakati peHEC neHPMC iri muchimiro chavo chemakemikari. HEC inotorwa kubva ku cellulose kuburikidza nekuwedzera kwe ethylene oxide mapoka, nepo HPMC inogadzirwa kubva ku cellulose kuburikidza nekuwedzera kwepropylene oxide uye methyl mapoka. Uku kusiyanisa kwemaitiro kunoguma nekusiyana kwekuita kwavo mukugadzira pendi.

Panyaya yekushandiswa, HEC inozivikanwa nekunaka kwekuchengetedza mvura uye kukora zvivakwa, zvichiita kuti ive yakakodzera kushandiswa mumapendi emvura. Inobatsira kuvandudza viscosity uye kugadzikana kwepende, zvichibvumira kushandiswa kuri nani uye kuvhara. Kune rimwe divi, HPMC inopa kwakafanana kukora uye kuchengetedza mvura kugona, asi zvakare inopa yakagadziridzwa sag kuramba uye nani yakavhurika nguva mukuumbwa kwependi. Izvi zvinoita kuti ive sarudzo inosarudzika yekushandisa mune yakakwirira-yekuita coating uye latex pendi.

Imwe mutsauko wakakosha pakati peHEC neHPMC kuenderana kwavo nemamwe mapendi ekuwedzera. HEC inonyanya kukoshesa pH uye electrolytes, iyo inogona kuderedza kuwirirana kwayo nezvimwe zvinowedzera uye maumbirwo. Kusiyana neizvi, HPMC inoratidza kuwirirana kuri nani nehuwandu hwakawanda hwezvinowedzera, zvichiita kuti ive sarudzo inogoneka kune akasiyana pendi masisitimu.

Uyezve, HPMC inozivikanwa neayo firimu-kugadzira zvimiro, izvo zvinogona kubatsira mukusimba kwese uye kuita kwefirimu repende. Izvi zvinoita kuti ive chinhu chakakosha mupende yekunze uye machira uko kupikisa kwemamiriro ekunze uye kuchengetedzwa kwenguva refu kwakakosha.

Mukupedzisa, nepo HEC neHPMC vese vachipa kukora uye rheological mabhenefiti mukugadzira pendi, misiyano yavo muchimiro chemakemikari, kuita, uye kuenderana kunoita kuti ive yakakodzera kune akasiyana marudzi ependi uye machira. Kunzwisisa misiyano iyi kwakakosha kune vanogadzira kuti vasarudze yakanyatsokodzera yekuwedzera yekuwana inodiwa pendi zvivakwa uye kuita.