Indlela ehlanganisiweyo kunye nokuqulunqwa koyilo lwee-antioxididants eziphambili kunye ne-Aneilicy AntioXants ngokuchasene ne-therma yeoksijini yeoksijini

Indlela ehlanganisiweyo kunye nokuqulunqwa koyilo lwee-antioxididants eziphambili kunye ne-Aneilicy AntioXants ngokuchasene ne-therma yeoksijini yeoksijini

I-anti-ye-oxgi ye-oxymen ye-polymer ifezekisiwe ikakhulu ngokudibanisa ii-antioxididants, ezinokwahlulwa zisetyenziswa ngokudibeneyo, kwaye ezi zinto zimbini zisetyenziswa ngokudibeneyo, ezidlala isiphumo esivakalayo seoksijini.

• Indlela yokusebenza ye-antioxididants eziphambili

Eyona nto iphambili i-antioxidant inokusabela nge-radicals yasimahla i-Rine Roo, ithathe i-radicals esebenzayo, iphazamise kwi-radicals esebenzayo, iphazamise i-radicals ebonakalayo, kwaye izuze injongo yokukhusela i-polymer. Imowudi ethile yesenzo imi ngolu hlobo lulandelayo:

Abanikeli be-hydrogen, abasentloko base-Aryalarines kwaye babantele i-antiotiockis ye-phenocan, = amaqela e-hhdrogen, ukuze akwazi ukubonelela nge-radicals yasimahla, ukuze i-radicals esebenzayo okanye i-hydroperoxides.

I-radical ye-radical ye-radical ye-radical, i-antioquinone antioxidants iphinde iphendule nge-radicals yasimahla yokwenza i-radicals emahla.

I-Eleclor Fornor, i-Amine ye-Amine ye-Animer Antioxididants ibonelela ngee-elektroni kwi-radicals esebenzayo, ibetha i-ion ephantsi, iwaphelise imisebenzi ye-oxidation yemoto.

I-antioxidants eziphambili inokusetyenziswa yedwa, kodwa isebenza ngcono kunye ne-Antioxidants yesibini.

• Indlela yokusebenza ye-Antiorimoring

I-Antioxidants eNcedo eNqanaba lokuncedisa i-Antioction inokubola i-hydroperoperoxies eveliswe ngu-Antioxidant ophambili esele inomsebenzi othile, ukuze bangaphinde baqale ngokuphendula kwe-oxition.

Ukongeza, i-antioisorintants encedisayo iyakwazi ukuyithintela kwaye ilibazise ukusekwa kweeradicals zasimahla ngexesha lenkqubo yokuqalisa, kwaye idlulisele i-ion yentsimbi eseleyo kwi-polymer. I-Antioxidantry eNxayayo enjenge-phosphite esters kunye ne-orlfidec sulfides yi-hydtroperoxide ibophe iiarhente zokugcina iiarhente.

• Ukukhetha ii-antioxidants

Zininzi iintlobo ze-antioxidants, kwaye la manqaku alandelayo kufuneka anikelwe ingqalelo xa ukhetha.

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. Nangona kunjalo, iya kutshintsha umbala ngexesha lokuqhubela phambili kwaye ingcolise imveliso, kwaye ityhefu inkulu, ngoko ayisetyenziswanga kwiimveliso zePolymer ezifuna ucoceko.

. Zonke ezi zinto zilapha ngasentla ziya kuchaphazela isiphumo se-antioxidant.

. I-Polatile ibhekisa kwi-phenomenon iimveliso zePolymer eziqulathe iimveliso ezibalekayo xa zivuthiwe, kwaye iphakamile kwindawo enyibilikayo kunye nobunzima be-antioxidants.

• Ukukhetha ii-antioxididants eziphambili

Ithintelwe i-antioxidant ye-meniolidant ye-phenalicy yeyona isetyenziswayo kwi-polymers kuba ayingcolisi imveliso, isondele kwityhuzuli emhlophe, engenabungozi okanye engenabungozi. Isixa esongezelelekileyo se-0.4% ~ 0.45% ithintelwe i-Antioxididant eyi-Antioxidant elungileyo, kodwa kulula ukuba nemveliso kunye neemveliso eziyityhefu, kwaye ayisetyenziswanga kwi-polymers. Ngamanye amaxesha inokusetyenziswa kuphela kwiimveliso ezimnyama zePolymer. I-rynergristic yongezwa kweentlobo ezahlukeneyo zeentlobo ze-antioioxidants eziphambili zinefuthe elingcono kunento engatshatanga, njengokumisa i-phenol / ithintelwe i-amine / ipeyinta i-amine / ipeyintiweyo ye-phenol / ipeyintiweyo ye-phenol / ipeyintiweyo i-amine / ipeyintiweyo ye-phenol.

• Ukukhethwa kwee-antioxidants ezincedisayo

I-phosphite inesiphumo esihle se-antisonisent kunye ne-antioxidant ephambili, kwaye inomgangatho othile wokungaxhathisi, ukuxhathisa ubushushu, i-antioging yemozulu esetyenziswayo, kodwa inokukhetha uhlobo olungavisisani lwamanzi, kodwa banokukhetha uhlobo olungavumiyo lwamanzi, kodwa unokukhetha uhlobo olungavisisani lwamanzi. Ukusetyenziswa kwe-Ilffuur-ene-antioxidants equkeni ayisebenzi njenge-phosphi, kwaye kulula ukuvelisa ungcoliseko lwe-sulfure xa udityaniswa kwezinye izinto zokuzila.

• Isiphumo se-rynergastistististine ye-antiorioridants yeprayimari kunye ne-Aneilicy

I-Antioxidants eNyulo-ziseko kufuneka yongezwe kwi-synergy kunye ne-antioxidant ye-antioxidant, kwaye inokunciphisa inani le-antioxidant ye-antioxidant yongezwa, kwaye ukongezwa kwayo kuphela akukho siphumo. Iindidi ezihlanganisiweyo zee-antioxidants zithintelwe i-phenol / tiofer, phospite / i-antisorionant ye-antisocking yi-themolivey 1010, i-1076, kunye ne-Antiyori yeSibini yi-phospide 168.