Kufananiza kwa utoto wa pulasitiki kumatengera mitundu itatu yoyambira yofiira, yachikasu ndi yabuluu, kuti igwirizane ndi mtundu womwe ndi wotchuka, imakwaniritsa zofunikira zamitundu yamtundu wa khadi, ndiyopanda ndalama, ndipo sikusintha mtundu pakukonza ndi kugwiritsa ntchito.Kuphatikiza apo, utoto wa pulasitiki ungathenso kupereka ntchito zosiyanasiyana ku mapulasitiki, monga kukonza kukana kuwala ndi kukana kwa mapulasitiki;kupatsa mapulasitiki ntchito zina zapadera, monga kupangika kwamagetsi ndi zinthu zotsutsa static;Makanema osiyanasiyana amitundu yaulimi a mulch ali ndi ntchito zopalira kapena zothamangitsa tizilombo ndikukweza mbande.Ndiko kunena kuti, imathanso kukwaniritsa zofunikira zina pogwiritsira ntchito kufananitsa mitundu.
Chifukwa mtunduwo umakhudzidwa kwambiri ndi ma pulasitiki opangira pulasitiki, chinthu china munjira yopangira pulasitiki ndi yosiyana, monga zida zosankhidwa, tona, makina, magawo akamaumba ndi ntchito za ogwira ntchito, etc., padzakhala kusiyana kwamitundu.Choncho, kufananitsa mitundu ndi ntchito yothandiza kwambiri.Nthawi zambiri, tiyenera kulabadira chidule ndi kudzikundikira zinachitikira, ndiyeno kuphatikiza chiphunzitso cha akatswiri pulasitiki mtundu mafananidwe mwamsanga kusintha mtundu wofananira luso.
Ngati mukufuna kukwaniritsa mtundu wofananira bwino, choyamba muyenera kumvetsetsa mfundo ya mtundu wa mtundu ndi kufananitsa mitundu, ndipo potengera izi, mutha kukhala ndi chidziwitso chozama cha chidziwitso chadongosolo lofananira ndi utoto wa pulasitiki.
Kumapeto kwa zaka za m'ma 1700, Newton anatsimikizira kuti mtundu mulibe mu chinthucho, koma ndi zotsatira za ntchito ya kuwala.Newton amachotsa kuwala kwa dzuwa kudzera pa prism ndiyeno akujambula pawindo loyera, lomwe lidzawonetse mawonekedwe okongola amtundu ngati utawaleza (mitundu isanu ndi iwiri yofiira, lalanje, yachikasu, yobiriwira, yacyan, yabuluu, ndi yofiirira).Mafunde aatali ndi aafupi owunikira pa sipekitiramu yowoneka amaphatikizana kupanga kuwala koyera.
Choncho, mtundu ndi mbali ya kuwala ndipo umapangidwa ndi mafunde a electromagnetic a utali wosiyanasiyana.Pamene mafunde a kuwala akuwonekera pa chinthu, chinthucho chimatumiza, chimatenga kapena kuwonetsera mbali zosiyanasiyana za mafunde a kuwala.Pamene mafunde onyezimira a utali wosiyanasiyana ameneŵa asonkhezera maso a anthu, adzatulutsa mitundu yosiyanasiyana muubongo wa munthu, ndipo umu ndi mmene mitundu imabwera.
Zomwe zimatchedwa kufananitsa mtundu ndikudalira pamalingaliro amitundu itatu yayikulu, ndikugwiritsa ntchito njira zamtundu wowonjezera, mtundu wotsitsa, wofananira ndi mtundu, mtundu wofananira ndi mtundu wa achromatic kukonzekera mtundu uliwonse womwe umafunidwa ndi mankhwalawa.
Maumboni
[1] Zhong Shuheng.Kupanga Kwamitundu.Beijing: China Art Publishing House, 1994.
[2] Song Zhuoyi et al.Pulasitiki zopangira ndi zowonjezera.Beijing: Science and Technology Literature Publishing House, 2006. [3] Wu Lifeng et al.Masterbatch User Manual.Beijing: Chemical Industry Press, 2011.
[4] Yu Wenjie et al.Zowonjezera Pulasitiki ndi Ukadaulo Wopanga Zopanga.3rd Edition.Beijing: Chemical Industry Press, 2010. [5] Wu Lifeng.Pulasitiki Coling Formulation Design.2nd Edition.Beijing: Chemical Viwanda Press, 2009
Nthawi yotumiza: Apr-09-2022