Ko silicone ndeyezvigadzirwa zvepurasitiki here?

Ko silicone ndeyezvigadzirwa zvepurasitiki here?

Silica gel ndeye colloidal zvinhu zvakagadzirwa nesilicate, iyo inonyanya kuumbwa nesilika, mvura uye silicone monomers.Silica gel ine hunhu hwepamusoro elasticity, kujeka kwepamusoro, kugadzikana kwepamusoro uye kushomeka kwekushisa, saka inoshandiswa zvakanyanya munzvimbo dzakasiyana siyana.Kunyangwe silica gel yakafanana nepurasitiki mune zvimwe zvivakwa, haisi yezvigadzirwa zvepurasitiki kubva pakuona kwechimiro chemakemikari uye maitiro ekugadzirira.

Chokutanga pane zvose, pane kusiyana kwakajeka mukugadzirwa kwemakemikari yesilicone uye plastiki.Mapurasitiki anowanzo kuumbwa neakakwira mamorekuru makomisheni, ayo anogadzira marefu cheni mamorekuru kuburikidza nepolymerization, achigadzira yunifomu inoenderera chimiro.Iyo silica gel inonyanya kuumbwa ne silico-oxygen bond, ichigadzira network network.Iyo yakakosha chimiro chesilico-okisijeni chisungo chinoita kuti silica gel ive nehunhu hwezvakaoma colloidal zvinhu, nepo mapurasitiki anowanzo ari akapfava colloidal zvinhu.

Kechipiri, kune zvakare misiyano iri pachena pakati pesilica gel nepurasitiki mugadziriro yekugadzirira.Kugadzirira kwepurasitiki kunowanzoitwa nekupisa kunyunguduka, extrusion, jekiseni kuumba uye dzimwe nzira dzekugadzirisa kugadzira zvigadzirwa zvemhando dzakasiyana uye saizi.Kugadzirira kwesilica gel kunonyanya kuitwa kuburikidza nekuita kwegel kwe hydrated colloid, inoda kudzora mamiriro ekuita, chiyero uye pH kukosha uye mamwe ma parameter, uyezve kuburikidza nekuomesa uye calcination uye mamwe matanho, kuitira kuti iite silico-. okisijeni bond network, uye pakupedzisira yakagadzirirwa kuita silicone zvigadzirwa.

Mukuwedzera, pane mimwe misiyano pakati pesilicone nepurasitiki mune zvakasikwa uye kushandiswa.Mamiriro akajairika emapurasitiki ndeyekuvharira kwakanaka, kusimba kwemagetsi uye kugadzikana kwemakemikari, nezvimwewo, izvo zvinoshandiswa zvakanyanya muhupenyu hwezuva nezuva, kugadzirwa kwemaindasitiri neminda yemagetsi.Silica gel ine yakanaka kugadzikana kwekupisa, kupfeka kuramba uye kusagadzikana kwemakemikari uye inoshandiswa zvakanyanya mukudya, zvekurapa, zvemagetsi uye nendege uye mamwe minda.Zvishandiso zvakajairika zvezvigadzirwa zvesilicone zvinosanganisira muromo webhodhoro resilicone, zvishongo zvesilicone uye zvisimbiso zvesilicone.

Muchidimbu, kunyange zvazvo silica gel yakafanana nepurasitiki mune zvimwe zvinhu, kune misiyano iri pachena pakati pesilica gel nepurasitiki maererano nekugadzirwa kwemakemikari, nzira yekugadzirira uye minda yekushandisa.Silica gel yakasarudzika colloidal zvinhu ine yakasarudzika zvivakwa uye kukosha kwekushandisa.Saka, silicone haisi yezvigadzirwa zvepurasitiki.