Dzimwe shamwari dzakasangana nemamiriro ezvinhu akadaro. Handizivi kuti sei. Muvara webhegi remutambo uyu wakapera mushure mekushandiswa kwenguva refu. Ini pakutanga ndaifunga kuti chinhu chisingapere, asi iko zvino chapera. Saka ngatitarisei zvikonzero nei. Ndechipi chikonzero chekudzima kwemabhegi eEVA emitambo?
Zvinhu zvinokanganisa kupera kwepurasitikiEVAzvigadzirwa. Kupera kwezvigadzirwa zvine mavara epurasitiki kune hukama nekudzivirira kwechiedza, kuramba kweokisijeni, kupisa kupisa, asidhi uye alkali kuramba kwepigment uye dhayi, uye hunhu hweresin inoshandiswa. Zvinoenderana nemamiriro ekugadzirisa uye mashandisirwo ezvigadzirwa zvepurasitiki, izvo zvataurwa pamusoro apa zvepigment inodiwa, dhayi, ma surfactants, ma dispersants, anotakura resin uye anti-kuchembera ekuwedzera anofanirwa kuongororwa zvakadzama panguva yekugadzirwa kwe masterbatch isati yasarudzwa.
1. Acid uye alkali kuramba Kupera kwezvigadzirwa zvepurasitiki zvine mavara kune hukama nemakemikari kuramba emuvara (asidhi uye alkali resistance, redox resistance).
Semuenzaniso, molybdenum chromium tsvuku inoshingirira kunyungudutsa asidhi, asi inonzwa kune alkali, uye cadmium yero haimirire acid. Aya ma pigment maviri uye phenolic resin ane simba rekudzikisira pane mamwe mavara, anokanganisa zvakanyanya kupisa kwekupisa uye kuramba kwemamiriro ekunze kwemavara uye kukonzera kupera.
2. Antioxidation: Mimwe organic pigments zvishoma nezvishoma inopera nekuda kwekuora kwema macromolecules kana dzimwe shanduko mushure mekuita oxidation.
Kuita uku kunosanganisira kukwirisa-tembiricha oxidation panguva yekugadzirisa uye oxidation paunosangana nemaoxidants akasimba (akadai sechromate muchromium yellow). Kana madziva, azo pigments uye chrome yero zvakasanganiswa, iro dzvuku rinopera zvishoma nezvishoma.
3. Kugadzikana kwekupisa kwemavara anodzivirira kupisa kunoreva chiyero chekudzikira kwehuremu, kushanduka kwemavara, uye kupera kwe pigment pasi pekugadzirisa tembiricha.
Izvo zvinongedzo zve inorganic pigments isimbi oxides uye munyu, iyo ine yakanaka yekudziya kugadzikana uye yakakwirira kupisa kupisa. Pigment akagadzirwa kubva kuorganic compounds anozochinja mune molecular chimiro uye diki yekuora pane imwe tembiricha. Kunyanya yePP, PA, uye PET zvigadzirwa, tembiricha yekugadzira iri pamusoro pe280 ° C. Pakusarudza mavara, kune rumwe rutivi, tinofanira kubhadhara kupisa kwepigment, uye kune rumwe rutivi, tinofanira kufunga nezvekudzivirira kupisa nguva ye pigment. Nguva yekudzivirira kupisa inowanzova 4-10mvura. .
Nguva yekutumira: Jul-12-2024