nkhani

filimu kupanga wothandizila ndi chigawo chachikulu cha galasi CHIKWANGWANI infiltrant, nthawi zambiri mlandu 2% mpaka 15% ya gawo misa ya chilinganizo infiltrant, udindo wake ndi kumangiriza CHIKWANGWANI galasi mu mitolo, kupanga chitetezo cha ulusi, kuti mitolo CHIKWANGWANI kukhala ndi digiri wabwino wa stiffness, agglomeration, kukwaniritsa zofunika mu galasi CHIKWANGWANI. Zomwe zimagwiritsidwa ntchito kwambiri popanga filimu mumapangidwe opangira magalasi opangira magalasi ndi ma polima, kuphatikiza ma epoxy resins, polyurethane, polyester, phenolic resins, modified polypropylene dispersions, kapena emulsions. Kuchita kwa opanga mafilimu makamaka kumadalira kapangidwe ka maselo ndi kulemera kwa ma polima. Kwa wothandizira filimu yemweyo, kuuma kwagalasi ulusiikhoza kuyendetsedwa ndi kulemera kwa maselo a wothandizira kupanga filimu, ndipo wothandizira filimu wokhala ndi kulemera kwakukulu kwa maselo adzakhala ndi kuuma kwakukulu kwa galasi la galasi, lomwe liri loyenera kuchiza pamwambakulimbikitsa zinthu zamagalasi odulidwa a thermoplastic, pamene filimu yopangira filimu yokhala ndi kulemera kochepa kwa maselo ndi yoyenera kupanga ulusi womwe umagwiritsidwa ntchito popota ndi kukoka. Ma polima a epoxy resin amakhala ndi aliphatic hydroxyl, ether, ndi epoxy magulu, ndipo pali kukopa kwamphamvu kwa mankhwala pakati pa magulu a polar mu epoxy film-forming agents, kotero amakhala ndi kumamatira kwabwino komanso kumangirira pamagalasi;

Komanso, gulu epoxy mu epoxy filimu kupanga wothandizila angatani ndi ochiritsira hydroxyl gulu, terminal carboxyl gulu, terminal amino gulu, ndi magulu ena yogwira mapulasitiki zomangamanga monga PBT, PET, PA, PC, etc., kuti patsogolo interfacial chomangira mphamvu pakati pa galasi CHIKWANGWANI ndi utomoni. Ma polyester opanga mafilimu ali ndi magulu ambiri a ester, maunsaturated chemical bonds, ndi magulu a hydrophilic mu unyolo waukulu, ndipo ntchito yawo imadalira mtundu wa asidi ndi mowa womwe umagwiritsidwa ntchito popanga polyester ndi chiŵerengero. Pamene utomoni m'munsi ndi unsaturated poliyesitala utomoni, ndi unsaturated zomangira pawiri mu poliyesitala filimu kupanga wothandizila polymerize ndi mtanda ulalo ndi zomangira pawiri mu utomoni m'munsi kupanga amphamvu mankhwala chomangira kapena thupi entanglement, amene bwino interfacial kugwirizana mphamvu. Opanga filimu ya polyester nthawi zambiri amakhala ndi zonyowetsa zabwino kwambiri komanso zolowera ndipo amagwiritsidwa ntchito ngati chonyowetsa mu pultrusion, mapindikidwe, kupopera mbewu mankhwalawa, chevron, ndi zinthu zina. Polyurethane filimu kupanga wothandizila molecular unyolo lili kubwereza carbamate dongosolo, kukhalapo kwa magulu polar kumapangitsa polyurethane kuti galasi CHIKWANGWANI kukhala zabwino kwambiri kumanga, maselo zofewa ndi zovuta zigawo za kuphatikiza elasticity mkulu ndi abrasion kukana, pa nthawi yomweyo, polyurethane mu isocyanate gulu akhoza analowerera ndi amino lumikiza wothandizila, kulimbikitsa amino lumikiza wothandizila, kulimbikitsa mankhwala interfatrix ndi kusintha maatomu. ntchito yazinthu zophatikizamankhwala.