In the thaum ntxov xyoo 1970, thev naus laus zis tau tsim los rau tshuab-stretch molding PET rau hauv lub raj mis. Lub raj mis PET tau patented hauv xyoo 1973.
PET yas tsim thaum twg?
PET tau tsim thawj zaug hauv Tebchaws Meskas thaum nruab nrab xyoo 1940s los ntawm DuPont kws tshuaj, uas tau tshawb nrhiav cov polymers uas tuaj yeem siv los ua cov ntaub ntawv tshiab. DuPont yuav tom qab no cov polyester fibers li "Dacron."
Polyethylene terephthalate PET tuaj qhov twg?
PET polyester yog tsim los ntawm ethylene glycol (EG) thiab terephthalic acid (TPA), qee zaum hu ua "purified terephthalic acid" lossis PTA. PET lub npe tshuaj tag nrho yog polyethylene terephthalate. PET PET tuaj qhov twg? Cov khoom siv raw rau PET yog tau los ntawm cov roj av thiab cov nkev ntuj.
YPolyethylene terephthalate yog dab tsi?
Polyethylene Terephthalate (PET) yog tsim los ntawm polymerization ntawm ethylene glycol thiab terephthalic acid. Ethylene glycol thiab terephthalic acid yog suav tias yog lub tsev thaiv rau PET resin.
YPuas yog polyethylene terephthalate toxic?
PET: polyethylene terephthalate
Thaum nws feem ntau suav tias yog "kev nyab xeeb" yas, thiab tsis muaj BPA, nyob rau hauv qhov muaj cua sov tuaj yeem tawm antimony, ib qho tshuaj lom metalloid, rau hauv cov zaub mov thiab dej haus, uas tuaj yeem ua rau ntuav, raws plab thiab mob plab.
