Ungayikhetha njani iAntioxidant efanelekileyo?

Kwenziwa kanjaniKhethaiAefanelekileyoAi-antioxidant?

Ukukhetha i-antioxidant efanelekileyo linyathelo eliphambili lokuphucula ukuqina, ukubonakala kunye nokusebenza kwepolymer. Oku kufuna ukuqwalaselwa ngokubanzi kwezinto ezininzi ezifana neempawu zeekhemikhali zepolymer ngokwayo, iimeko zokucubungula, ukuphela kokusetyenziswa kwendawo kunye nemimiselo yokukhusela indalo.

Iipolyolefins(ezifana ne-polyethylene kunye ne-polypropylene) zixhomekeke kwi-thermal oxidative degradation, ezifuna i-antioxidants eziphambili (ezifana ne-phenols) ukuba zibambe ii-radicals zamahhala kunye ne-antioxidants ezincedisayo (ezifana ne-phosphites) ukubola i-hydroperoxide.

I-PVCUkuthotywa kusekelwe ikakhulu kwi-ionization, kwaye xa kuthelekiswa ne-polyolefins, abavelisi be-PVC banemfuno encinci ye-antioxidants. Okwangoku, i-antioxidants edla ngokusetyenziswa kwi-PVC ibandakanyaAO1076, AO2246, njl.

Iiplastiki zobunjineli(I-PA, i-PC, i-PPS) ziqhutyelwa ngokubanzi kumaqondo aphezulu kwaye zifunaantioxidants ukumelana nobushushuukuthintela ukutyheli kunye nokulahleka kwamandla.

①Kwiimeko zokulungisa ubushushu obuphezulu (>280 ℃), kuyacetyiswa ukuba ukhethe iintlobo ezinokuguquguquka okuphantsi kunye nokumelana nobushushu obuphezulu.

② Ukuvezwa kwangaphandle kwexesha elide, inkqubo yokuchasana ne-UV iyafuneka, efana neekhompawundi zephenolic kunyeiAbsorber UV.

③Naka ingqalelo ehambelanayo kwaye unqande imvula. Ukongeza, i-amine antioxidants inokhuseleko lombala olubuthathaka.

④Indibaniselwano ye-antioxidant ephambili kunye ne-antioxidant encedisayo inokuphucula kakhulu umphumo wokuchasana nokuguga.

Isishwankathelo, ukusetyenziswa kwe-antioxidants kuphela akwanelanga ukujamelana neemeko ezahlukeneyo zesicelo, kwaye ukulungelelaniswa kwezongezo ezininzi lukhetho olungcono.

Qhagamshelana nathi ngolwazi oluthe kratya!