Video: LDPE yas yog dab tsi?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
Tsawg-density polyethylene ( LDPE ) yog cov thermoplastic ua los ntawm monomer ethylene. Nws yog thawj qib ntawm polyethylene , tsim nyob rau hauv 1933 los ntawm Imperial Chemical Industries (ICI) siv cov txheej txheem siab ntawm cov dawb radical polymerization. Nws cov chaw tsim khoom siv tib txoj kev niaj hnub no.
Hauv qhov no, dab tsi yog tsim los ntawm LDPE yas?
LDPE yog dav siv rau kev tsim ntau yam ntim, dispensing fwj, ntxuav fwj, tubing, yas qhov chaw rau computer Cheebtsam, thiab ntau yam molded laboratory khoom. Nws feem ntau siv yog nyob rau hauv yas hnab. Lwm yam khoom ua los ntawm nws muaj xws li: cov tais thiab cov thawv ntim khoom siv dav dav.
Ib sab saum toj, LDPE thiab HDPE yog dab tsi? HDPE thiab LDPE yog ob qib sib txawv ntawm cov yas uas txawv hauv cov qauv thiab muaj cov khoom sib txawv. Ob leeg cov ntaub ntawv no yog ua los ntawm polymerization ntawm ethylene. HDPE ( High Density Polyethylene ) yog cov polyethylene nrog ntau ntom. LDPE ( Tsawg Density Polyethylene ) Yog cov polyethylene nrog qhov ntom ntom.
Tsuas yog li ntawd, puas yog LDPE yas zoo?
Nkauj xwb LDPE resins yog nyab xeeb rau kev sib cuag zaub mov. LDPE muaj cov tshuaj tiv thaiv zoo, muaj zog muaj zog, thiab muaj zog hnav zoo. Zoo li PET thiab HDPE yas , LDPE tuaj yeem tuav koj cov khoom noj yam tsis muaj leaching tej yam khoom phem los yog cia cov kab mob permeate.
Puas yog LDPE yas BPA dawb?
LDPE raug suav hais tias yog cov tshuaj lom neeg tsawg yas thiab nws yog siv nyob rau hauv lub khob cij, tsim cov hnab, squeezable fwj nrog rau cov ntawv coated ntawv mis cartons thiab kub / txias haus khob. Thaum LDPE tsis muaj BPA , nws tuaj yeem tso cov tshuaj estrogenic, zoo li HDPE.
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