Kev sib piv ntawm PP thiab HDPE, ob qho tib si siv raw khoom rau cov raj mis reagent

Nrog rau kev nthuav dav ntxiv ntawm daim ntawv thov ntawm ntau yam khoom siv polymer, cov raj mis yas reagent tau maj mam siv dav hauv kev khaws cov tshuaj reagents.Ntawm cov khoom siv raw rau kev tsim cov yas reagent fwj, polypropylene (PP) thiab high-density polyethylene (HDPE) yog ob qho khoom siv.Yog li dab tsi yog qhov txawv ntawm kev ua haujlwm ntawm ob cov ntaub ntawv no?

1)TemperatureRkev cuam tshuam

Lub embrittlement kub ntawm HDPE yog -100 ° C thiab PP yog 0 ° C.Yog li ntawd, thaum cov khoom xav tau qhov kub thiab txias, reagent fwj ua los ntawm HDPE yog qhov nyiam dua, xws li 2-8 ° C buffers siv los khaws cov tshuaj ntsuam xyuas.Reagent fwj rau Buffer thiab -20 ° C enzyme;

2) TshuajRkev cuam tshuam

Reagent fwj ua los ntawm HDPE thiab PP yog ob qho tib si acid thiab alkali resistant nyob rau hauv chav tsev kub, tab sis HDPE yog superior rau PP nyob rau hauv cov nqe lus ntawm oxidation kuj.Yog li ntawd, thaum khaws cov ntaub ntawv oxidizing, HDPE reagent fwj yuav tsum raug xaiv;

Tsawg molecular hnyav aliphatic hydrocarbons, muaj ntxhiab hydrocarbons thiab chlorinated hydrocarbons tuaj yeem muag thiab o polypropylene.Yog li ntawd, HDPE reagent fwj yuav tsum tau siv thaum khaws cov organic solvents xws li benzene rings, n-hexane thiab chlorinated hydrocarbons.

3) Toughness thiab cuam tshuam tsis kam

Polypropylene (PP) muaj qhov zoo heev khoov qaug zog tiv thaiv, tab sis tsis zoo cuam tshuam tsis zoo ntawm qhov kub thiab txias.Kev poob qis ntawm HDPE reagent fwj yog qhov zoo dua li ntawm PP reagent fwj, yog li PP fwj tsis haum rau qhov kub thiab txias.

4)Tkev tsis ncaj ncees

PP yog pob tshab dua HDPE thiab yog qhov tsim nyog rau kev soj ntsuam cov xwm txheej ntawm cov ntaub ntawv khaws cia hauv lub raj mis.Txawm li cas los xij, tshwj xeeb tshaj yog pob tshab PP lub raj mis ntawm kev ua lag luam tam sim no muaj cov neeg sawv cev pob tshab ntxiv rau cov khoom siv, yog li koj yuav tsum tau ua tib zoo saib thaum xaiv lub raj mis ua los ntawm PP.

5) Txoj kev ua kom tsis muaj menyuam

Hais txog kev ua kom tsis muaj menyuam, tsuas yog qhov sib txawv ntawm HDPE thiab PP yog tias PP tuaj yeem ua kom tsis muaj menyuam los ntawm qhov kub thiab txias, tab sis HDPE tsis tuaj yeem.Ob leeg tuaj yeem ua kom tsis muaj menyuam los ntawm EO thiab hluav taws xob (irradiation-resistant PP yog yuav tsum tau, txwv tsis pub nws yuav tig daj) thiab tshuaj tua kab mob kom tsis muaj menyuam.