Vharuvanyori yepurasitiki inzira yakashandiswa kwazvo yeValve, ine zvakanakira kupokana, kurema, kupfeka kurwisa, etc. Izvo zvinowanzoshandiswa zvakanyanya mumakemikari, petrochemical dziviriro uye mamwe maindasitiri. Izvi zvinotevera inhoroondo yekubudiriro yemavharanda epurasitiki.
Muma1950, nekukura nekukurumidza kweindasitiri yemakemikari, kudikanwa kwemavharuburi zvishoma nezvishoma kwakawedzera. Panguva ino, zvigadzirwa zvepurasitiki zvakange zvichishandiswa zvakanyanya mumunda weindasitiri, saka vamwe mainjiniya vakatanga kudzidza nzira yekunyorera mari yepurasitiki mukugadzira mavharuvhu. Mavharavha epurasitiki ekutanga ainyanya kugadzirwa uchishandisa Polyvinyl chloride (PVC) zvinhu, izvo zvine hunyanzvi hwekumanikidza, asi zvivakwa zvacho zvakarongeka uye zvakakodzera kudzvinyirira kwakaderera uye kudzvinyirira kwakadzika.
Muma1960s, nekukura kwekuenderera mberi kwePurasitiki tekinoroji, polypropylene (PP), polytetrafluorohylene (PTFE) uye zvimwe zvinhu zvakashandiswa mukugadzira mapurasitiki emapurasitiki. Izvi Zvishandiso zvine zvivakwa zviri nani uye kupokana, uye zvinogona kuenderana nerudzi rwakawanda rwekushanda nzvimbo.
Muma1970s, nekukura kweTekinoroji yepurasitiki, midziyo yemapurasitiki mitsva yakaunzwa, yakadai chinja kune zvakanyanya kudiwa kwekushanda nharaunda.
Pakutanga kwezana rino ramakore rechi 21, nekuziva kuri kuwedzera kwekudzivirirwa kwezvakatipoteredza, izvo zvinodiwa zvemavharuvhu zviri kuita zvakakwirira uye zvakakwirira. Panguva ino, zvimwe zvinhu zvitsva zvepurasitiki zvakashandiswa mukugadzira mavharuvhu, senge polyeetherketone (peek), polyimide (pi) uye zvimwe zvinhu zvepamusoro-soro. Izvi zvigadzirwa zvine zvivakwa zviri nani uye kupokana, uye kunogona kuita zvakanyanya kudiwa kwekushanda nharaunda.
Muchidimbu, nekuvandudzwa kweindasitiri yemakemikari uye kuwanda kwehunyanzvi hwekuvandudzwa kwemapurasitiki ekushandisa kwepurasitiki kubva pane zvekutanga zvePVC kuenda kune izvozvi, zvichiramba uchivandudza kupokana kwavo, zvimiro zvemicheka uye huwandu hwe application, kuve midziyo yakakosha uye isingabvumirwe yemakemikari, petrochemical uye nharaunda dziviriro dziviriro.
Kutumira Nguva: Mar-02-2023