Niki gitera imifuka yimikino ya EVA gushira

Bamwe mu nshuti bahuye n'ikibazo nk'iki. Sinzi impamvu. Ibara ryiyi sakoshi yimikino yazimye nyuma yo gukoreshwa igihe kinini. Nabanje gutekereza ko ari ibikoresho bitazashira, ariko ubu byarashize. Reka rero turebe impamvu zibitera. Niyihe mpamvu yo gushira imifuka yimikino ya EVA?

Ibintu bigira ingaruka kumyuka ya plastikeEVAibicuruzwa. Kugabanuka kw'ibicuruzwa bifite amabara ya plastike bifitanye isano no kurwanya urumuri, kurwanya ogisijeni, kurwanya ubushyuhe, aside na alkali birwanya pigment n'amabara, n'ibiranga resin ikoreshwa. Ukurikije uburyo bwo gutunganya nibisabwa gukoreshwa mubicuruzwa bya pulasitike, imitungo yavuzwe haruguru yibintu bisabwa pigment, amarangi, surfactants, dispersants, resin yikigo hamwe ninyongeramusaruro zirwanya gusaza bigomba gusuzumwa byimazeyo mugihe cyo gukora ibihangano mbere yo gutoranya.

1. Kurwanya Acide na alkali Kugabanuka kw'ibicuruzwa bya pulasitiki by'amabara bifitanye isano no kurwanya imiti y’ibara (aside irwanya alkali, irwanya redox).
Kurugero, molybdenum chromium itukura irwanya aside aside, ariko yunvikana kuri alkali, kandi umuhondo wa kadmium ntabwo urwanya aside. Izi pigment ebyiri hamwe na resinike ya fenolike bigira ingaruka zikomeye zo kugabanya amabara amwe, bigira ingaruka zikomeye kubirwanya ubushyuhe no guhangana nikirere byamabara kandi bigatera gushira.

2. Antioxyde: Pigment zimwe na zimwe zigabanuka buhoro buhoro bitewe no kwangirika kwa macromolecules cyangwa izindi mpinduka nyuma ya okiside.

Ubu buryo burimo okiside yubushyuhe bwo hejuru mugihe cyo gutunganya no okiside mugihe uhuye na okiside ikomeye (nka chromate yumuhondo wa chromium). Iyo ibiyaga, azo pigment hamwe na chrome yumuhondo bivanze, ibara ry'umutuku rizashira buhoro buhoro.

3. Ubushyuhe bwumuriro bwibintu bitarwanya ubushyuhe bivuga urwego rwo kugabanuka kwubushyuhe bwumuriro, amabara, hamwe no kugabanuka kwa pigment munsi yubushyuhe.

Ibigize pigment organique ni okiside yicyuma nu munyu, bifite ubushyuhe bwiza bwumuriro hamwe nubushyuhe bwinshi. Pigment ikozwe mubintu kama bizagira impinduka mumiterere ya molekile hamwe no kubora gake kubushyuhe runaka. Cyane cyane kubicuruzwa bya PP, PA, na PET, ubushyuhe bwo gutunganya buri hejuru ya 280 ° C. Mugihe duhitamo amabara, kuruhande rumwe, tugomba kwitondera kurwanya ubushyuhe bwa pigment, kurundi ruhande, tugomba gutekereza igihe cyo guhangana nubushyuhe bwa pigment. Igihe cyo kurwanya ubushyuhe mubisanzwe ni 4-10. .