Pulasitiki Kupanga Njira & Mbiri

Pulasitikiamapangidwa ndi ma polima, koma ma polima ena monga biopolymers si mapulasitiki.Zida zamapulasitiki zikugwiritsidwa ntchito tsiku ndi tsiku moyo monga makompyuta, cholembera, mafoni a m'manja, ma compact disc, pendrive, ndi masukisi etc.Plastic imatanthauzidwa ngati zinthu zonse zopangidwa ndi organic kapena semi-synthetic zomwe zingathe kupangidwa kapena kuumbidwa mumtundu uliwonse.Mankhwala a mapulasitiki amaphatikizapo unyolo wa carbon, oxygen, sulfure kapena nitrogen.

Mbiri yamapulasitiki

Mu 1284 zopangidwa mwachilengedwe zopangidwa ndi pulasitiki kuchokera ku nyanga ndi tortoiseshell zidadziwika1820 nthawi ya pulasitiki Mu 1823, katswiri wa zamankhwala waku Scotland Charles Macintosh adapeza labala. , Londoner Alexander Parkes adavumbulutsa makina apulasitiki opangidwa ndi anthu oyamba ku ParkesineMu 1869, John W. Hyatt adapanga Celluloid [zinthu zosayaka] Mu 1872, abale a Hyatt anali ndi chilolezo choyamba makina omangira jakisoni apulasitikiMu 1880 cellulose nitrate m'malo mwa nyanga ngati chinthu chomwe chimakonda kupangira zisa. Makina ovomerezeka a Eastman Kodak opangira filimu yojambula mosalekeza yotengera cellulose nitrate.1900 nthawi ya pulasitiki Mu 1908, Jacques E. Brandenberger anapanga Cellophane [transparent cellulose material]Mu 1909, mapulasitiki a Casein, opangidwa kuchokera ku mkaka, opangidwa ndi Erinoid9,In H. Mu 1916, Rolls Royce adayamba kugwiritsa ntchito phenol formaldehyde mkati mwagalimoto yake. Mu 1920, polyvinyl chloride kapena PVC idapangidwa. ndi kampani ya 3MMu 1933, Fawcett ndi Gibson adapeza zinthu za polyethylene Mu 1938, mswachi woyamba wokhala ndi nsonga za nayiloni kupangidwa. Mu 1939, mchaka chino nayiloni idapangidwa. Mu 1942, Dr. styrene (ABS) yopangidwa. Mu 1949, Tupperware material yopangidwa kuchokera ku low density polyethylene. Toy Fair.Mu 1965 DuPont inatulutsa mankhwala okhala ndi dzina la malonda la Kevlar.Mu 1973, mabotolo akumwa a Polyethylene terephthalate adayambitsa. system] idakhazikitsidwa2005 mchaka chino NASA ikuwona ubwino wa zida za polyethylene RFX1 [RFX1 yomwe imagwiritsidwa ntchito pomanga mlengalenga] Mu 2011, vinylplus - pulogalamu yokhazikika idakhazikitsidwaMu 2012 nsalu ya PVC yomwe imagwiritsidwa ntchito pomanga malo a Olimpiki a London2020 kupanga zinthu za PVC kudzafika 800,000 matani pachaka2022 mchaka chino bwalo lamasewera la FIFA world cup qatar showcase likukonzekera kugwiritsa ntchito nsalu yonyezimira ya katatu ya PVC kuti ipange zero carbon.

Njira yopanga mapulasitiki

Kukonzekera kwa zopangira Kukonzekera kwa monomerPolymerization processKutembenuka kwa resin polima kukhala zinthu zapulasitiki

Pakusintha ma resins a polima kukhala zinthu zapulasitiki, njira zotsatirazi zikuphatikizidwa

ExtrusionInjection jekeseniKuumba kowombaKumangirira kozungulira