nkhani

Pali mitundu iwiri ya ma resini omwe amagwiritsidwa ntchito popanga zinthu zophatikizika: thermoset ndi thermoplastic. Ma resini a thermoset ndiye ma resini odziwika kwambiri, koma ma resini a thermoplastic akuyamba kutchuka chifukwa cha kuchuluka kwa anthu omwe amagwiritsa ntchito zinthu zophatikizika.
Ma resin a thermoset amalimba chifukwa cha njira yophikira, yomwe imagwiritsa ntchito kutentha kupanga ma polima olumikizidwa kwambiri omwe ali ndi zomangira zolimba zosasungunuka kapena zosasungunuka zomwe sizisungunuka zikatenthedwa. Koma ma resin a thermoplastic, ndi nthambi kapena unyolo wa ma monomers omwe amafewa akatenthedwa ndi kulimba akazizira, njira yosinthika yomwe siifuna kulumikizana kwa mankhwala. Mwachidule, mutha kusungunula ndikusintha ma resin a thermoplastic, koma osati ma resin a thermoset.

Chidwi cha zinthu zopangidwa ndi thermoplastic chikuwonjezeka, makamaka m'makampani opanga magalimoto.

Ubwino wa Thermosetting Resins
Ma resins a thermoset monga epoxy kapena polyester ndi omwe amakondedwa popanga zinthu zopangidwa ndi zinthu zosiyanasiyana chifukwa cha kukhuthala kochepa komanso kulowa bwino mu netiweki ya ulusi. Chifukwa chake, n'zotheka kugwiritsa ntchito ulusi wambiri ndikuwonjezera mphamvu ya zinthu zopangidwa ndi zinthu zosiyanasiyana zomwe zamalizidwa.

Ndege zaposachedwa kwambiri nthawi zambiri zimakhala ndi zinthu zophatikizana zopitilira 50 peresenti.

Pa nthawi ya pultrusion, ulusi umaviikidwa mu thermoset resin ndikuyikidwa mu nkhungu yotentha. Ntchitoyi imayambitsa njira yochiritsira yomwe imasintha ulusi wolemera pang'ono kukhala netiweki yolimba ya magawo atatu momwe ulusi umatsekeredwa mu netiweki yatsopanoyi. Popeza njira zambiri zochiritsira zimakhala za exothermic, njirazi zimapitilira ngati unyolo, zomwe zimathandiza kupanga kwakukulu. Ulusi ukakhazikika, kapangidwe ka magawo atatu kamatseka ulusiwo ndikupatsa chophatikizacho mphamvu ndi kuuma.