Ungayikhetha njani i-PVC heat stabilizer?

1, Cacisa iimeko zesicelo kunye neemfuno zokusebenza
1. Ukutya/Iimveliso zonyango
Beka phambili ukusetyenziswa kwezithambisi ze-organotin (i-mercaptan methyl tin), ezihlangabezana nemigangatho ye-FDA kwaye zibonakala ngokucacileyo, zifanelekile kwiimveliso ze-PVC ezibonakalayo, iifilimu zokupakisha ukutya, njl.njl. Ezinye iindlela ziquka izithambisi ze-calcium zinc composite, ekufuneka ziqinisekiswe yi-REACH, i-LFGB, kunye neminye imigangatho ukuze zihlangabezane neemfuno zokufuduka okungenatyhefu.
2. Izixhobo zokwakha/zoshishino
Iipayipi eziqinileyo kunye neepleyiti: Kucetyiswa ukuba kusetyenziswe iziqinisi ezidityanisiweyo zetyuwa yelead (ezingabizi kakhulu, ezizinzisa ubushushu obuphezulu), kodwa kufuneka kuqwalaselwe imida yazo yokusingqongileyo.
2, Ukuvavanya imigaqo yokusingqongileyo nokhuseleko
1. Ukuthobela imiqathango yokusingqongileyo:
Iziqinisi ezingenalo i-lead kunye ne-cadmium ezifana ne-calcium zinc composite okanye iziqinisi ze-organotin ziyafuneka ukuze zithunyelwe kwi-European Union okanye kwiinkalo zonyango.
Ziphephe izinto ezigcina ityuwa yelothe ingasebenzi kakuhle (ubuthi obuphezulu) kwaye ukhethe iimveliso ezihambelana nemigangatho ye-ROHS kunye ne-REACH.
2. Ukhuseleko lokudibana: Izinga lokufuduka kwezinto ezizinzisayo kufuneka liqinisekiswe kwizixhobo zokupakisha ukutya, kwaye kufuneka kukhethwe iifomyula ezidityanisiweyo ezinobunzima obukhulu beemolekyuli.
3, iteknoloji yokucubungula kunye nenkqubo yokuthambisa ehambelanayo
1. Uhlengahlengiso lweendlela zokucubungula
Ukukhupha/ukubumba ngenaliti: Iziqinisi zetin zendalo kufuneka zidityaniswe nenkqubo yokuthambisa iparafini wax+calcium stearate, kwaye ubungakanani bezithambiso zangaphandle ezongeziweyo kufuneka bulawulwe kwiindawo eziyi-0.1-0.5 ukuze kuthintelwe ukusasazeka okungalinganiyo;
Ukubumba i-Rolling/Blow: Iziqinisi ze-calcium zinc composite kufuneka zidityaniswe nezithambisi ezishushu kakhulu ezifana ne-polyethylene wax ukuthintela ukunyibilika okugqithisileyo;
Ukulungiswa kweeparamitha zenkqubo: Ukucubungula ubushushu obuphezulu (ngaphezulu kwe-200 ℃) kufuna ukusetyenziswa kwezithambisi ezingatshisi ubushushu (ezifana ne-organotin, njl.njl.) ukunciphisa i-torque ephezulu yokunyibilika ngaphezulu kwe-15%. Iimveliso ezicacileyo kufuneka zilawule ukuhambelana phakathi kwezithambisi kunye neeresini ukuze kuthintelwe imvula kunye nokwanda kobushushu ngama-37.
4, iindlela zokuqinisekisa nokuvavanya
Uvavanyo lozinzo lobushushu: Beka isampulu yePVC equlethe i-stabilizer kwi-80 ℃ iiyure ezingama-48 uze ujonge utshintsho lombala.
Ukulinganisa ukumelana nemozulu: Vavanya isiphumo sokukhusela i-UV ngovavanyo lokwaluphala lwe-QUV, olufuna izinga lokugcina amandla okutsalwa elingaphezulu kwama-85% emva kweeyure ezingama-5000.
Ukuqinisekiswa kokusebenza kokucubungula: Sebenzisa i-torque rheometer ukujonga ukunyibilika kokunyibilika kunye nokuphucula umlinganiselo we-lubricant kunye ne-stabilizer.