Ungayikhetha njani i-Antioxidant efanelekileyo?

Kwenziwa kanjaniKhethaiAkufanelekileAi-antioxidant？

Ukukhetha i-antioxidant efanelekileyo linyathelo elibalulekileyo lokuphucula ukuqina, inkangeleko kunye nokusebenza kwe-polymer. Oku kufuna ukuqwalaselwa ngokubanzi kwezinto ezininzi ezifana neempawu zeekhemikhali ze-polymer ngokwayo, iimeko zokucubungula, indawo yokusetyenziswa kwayo kunye nemigaqo yokukhusela okusingqongileyo.

IiPolyolefins(ezifana ne-polyethylene kunye ne-polypropylene) zisengozini yokubola kwe-oxidative yobushushu, zifuna ii-antioxidants eziphambili (ezifana nee-phenols) ukubamba ii-free radicals kunye nee-antioxidants ezincedisayo (ezifana nee-phosphites) ukuze zibole i-hydroperoxide.

I-PVCUkuwohloka kwe-'s kusekelwe kakhulu kwi-ionization, kwaye xa kuthelekiswa nee-polyolefins, abavelisi be-PVC banesidingo esincinci kakhulu se-antioxidants. Okwangoku, ii-antioxidants ezisetyenziswa kakhulu kwi-PVC ziqukaAO1076, AO2246, njl.

Iiplastiki zobunjineli(i-PA, i-PC, i-PPS) zihlala zicutshungulwa kumaqondo obushushu aphezulu kwaye zifunaii-antioxidants ezimelana nobushushuukuthintela ukuba tyheli kunye nokulahlekelwa ngamandla.

①Kwiimeko zokucubungula ezishushu kakhulu (>280 ℃), kuyacetyiswa ukuba ukhethe iintlobo eziguquguqukayo kancinci kunye nokumelana nobushushu obuphezulu.

②Ukuze uhlale ngaphandle ixesha elide, kufuneka inkqubo yokulwa ne-UV esebenzayo, efana nee-phenolic compounds kunyeIzifunxi ze-UV.

③Nika ingqalelo ekuhambelaneni kwezinto kwaye uphephe ukuna kwemvula. Ukongeza, ii-amine antioxidants zikhusela umbala kancinci.

④Ukudibanisa i-antioxidant ephambili kunye ne-antioxidant encedisayo kunokuphucula kakhulu isiphumo sokulwa nokwaluphala.

Ngamafutshane, ukusetyenziswa kwee-antioxidants kuphela akwanelanga ukujongana neemeko ezahlukeneyo zokusetyenziswa, kwaye ukulungelelaniswa kwezongezo ezininzi lukhetho olungcono.

Qhagamshelana nathi ukuze ufumane ulwazi oluthe kratya!