Ndiyakholelwa ukuba abantu abaninzi banenkxalabo enkulu malunga nengxaki ephelayo yeplastikiIingxowa zesixhobo ze-EVA, ngoko yintoni ebangela ukuba iingxowa zesixhobo ziphele? Ukuphela kweemveliso ezinemibala yeplastiki kunxulumene nokumelana nokukhanya, ukumelana neoksijini, ukumelana nobushushu, ukuxhathisa kwe-asidi kunye ne-alkali yemibala kunye nedayi, kunye neempawu ze-resin esetyenzisiweyo. Makhe siyihlalutye ngokufutshane apha ngezantsi.
1. Ukumelana ne-Acid kunye ne-alkali Ukuphela kweemveliso zeplastiki ezinemibala kuhambelana nokumelana nemichiza yombala (ukumelana ne-asidi kunye ne-alkali, ukuxhathisa i-redox).
Umzekelo, i-molybdenum chromium ebomvu iyaxhathisa kwi-acids dilute, kodwa iyavela kwi-alkali, kunye ne-cadmium emthubi ayinakumelana ne-asidi. Ezi pigments zimbini kunye ne-phenolic resin zinempembelelo enamandla yokunciphisa kwimibala ethile, echaphazela kakhulu ukuxhathisa ubushushu kunye nokumelana nemozulu yemibala kwaye ibangele ukubuna.
2. I-Antioxidation: Ezinye ii-pigments eziphilayo ziphela ngokuthe ngcembe ngenxa yokuthotywa kwee-macromolecules okanye ezinye iinguqu emva kwe-oxidation.
Le nkqubo ibandakanya i-oxidation yobushushu obuphezulu ngexesha lokucubungula kunye ne-oxidation xa udibana nee-oxidants ezinamandla (ezifana ne-chromate kwi-chromium yellow). Xa amachibi, i-azo pigments kunye ne-chrome etyheli zixutywe, umbala obomvu uya kuncipha ngokuthe ngcembe.
3. Ukuzinza kwe-Thermal ye-pigment ekwazi ukumelana nobushushu kubhekiselele kwiqondo lokuncipha kobunzima be-thermal, ukujika kombala, kunye nokuncipha kwebala phantsi kobushushu bokusebenza.
I-pigments ye-inorganic yenziwe ngee-oxide zetsimbi kunye neetyuwa, ezinozinzo oluhle lwe-thermal kunye nokumelana nokushisa okuphezulu. Ii-pigments ezenziwe kwi-organic compounds ziya kutshintsha kwi-molecular structure kunye nexabiso elincinci lokubola kwiqondo lokushisa elithile. Ngokukodwa kwi-PP, i-PA, kunye neemveliso ze-PET, ubushushu bokusebenza bungaphezulu kwe-280 ° C. Xa ukhetha i-colorants, kwelinye icala, kufuneka sinikele ingqalelo ekuxhathiseni ubushushu be-pigment, kwaye kwelinye icala, kufuneka siqwalasele ixesha lokumelana nobushushu be-pigment. Ixesha lokumelana nobushushu lidla ngokuba yi-4-10imvula. .
4. Ukukhanya ukukhanya Ukukhanya kokukhanya kwemibala kukuchaphazela ngokuthe ngqo ukubola kweemveliso.
Kwiimveliso zangaphandle ezibonakaliswe ekukhanyeni okunamandla, ukukhanya (ilanga) izinga lombala osetyenzisiweyo luphawu olubalulekileyo. Ukuba inqanaba lokukhanya lincinci, imveliso iya kuphelelwa ngokukhawuleza ngexesha lokusetyenziswa. Umgangatho wokumelana nokukhanya okhethiweyo kwiimveliso ezichasene nemozulu kufuneka ungabi ngaphantsi kwenqanaba lesithandathu, kwaye kungcono ukhethe amanqanaba asixhenxe okanye asibhozo. Kwiimveliso zangaphakathi, inqanaba lesine okanye lesihlanu linokukhethwa.
Ukumelana nokukhanya kwe-resin ye-carrier carrier kunempembelelo enkulu ekutshintsheni umbala. Emva kokuba i-resin ilayishwe yimitha ye-ultraviolet, isakhiwo sayo se-molecular siyatshintsha kwaye umbala uphela. Ukongeza i-stabilizers yokukhanya efana ne-ultraviolet absorbers kwi-masterbatch inokuphucula ukunyanzeliswa kokukhanya kwemibala kunye neemveliso zeplastiki ezinemibala.
Ixesha lokuposa: Jul-05-2024