2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Ob daim ntawv ntawm polyethylene yog cov resistant rau acids, caustic alkaline kua thiab inorganic kuab tshuaj. Qhov no ua rau polyethylene muaj txiaj ntsig zoo li lub thawv hauv cov chaw sim khaws cov kua qaub thiab cov hauv paus. Txawm li cas los xij qee cov kuab tshuaj organic xws li benzene thiab acetone tuaj yeem yaj polyethylene.
Yuav ua li cas cov kuab tshuaj yuav yaj polyethylene?
Polyethylene (tshwj tsis yog cross-linked polyethylene) feem ntau tuaj yeem yaj ntawm qhov kub siab hauv cov pa roj carbon monoxide xws li toluene lossis xylene, lossis hauv cov kuab tshuaj chlorinated xws li trichloroethane lossis trichlorobenzene. Polyethylene absorbs yuav luag tsis muaj dej.
Puas acetone noj polyethylene?
Muaj txhua yam yas. Yog tias cov yas tshwj xeeb dais qhov zoo sib xws rau acetone,cov acetone yuav yaj lossis tsawg kawg cuam tshuam rau nws qhov chaw, softening, smearing lossis tseem yaj cov yas. Lwm cov yas, sib txawv ntawm acetone, yuav nyob twj ywm tsis cuam tshuam los ntawm cov kuab tshuaj.
Yuav ua li cas cov yas ua acetone yaj?
Cov acetone yuav ua rau cov yas ua kom puas, muag muag, smearing nws, lossis tseem yaj cov yas
- PVDF.
- Polysulfone.
- Cast Acrylic.
- PVC.
- CPVC.
Koj ua li cas tshem polyethylene?
Ib txoj hauv kev uas feem ntau siv los tshem cov polyethylene resin los ntawm cov hlau nto yoghu rau saum npoo nrog xylene boilingkuab tshuaj. Lwm txoj kev yog scouring cov hlau nto nrog tooj liab ntaub plaub los yog zoo li.
Pom zoo:
Puas yog acetone ua cov kuab tshuaj recrystallization zoo?
Kev piav qhia: Cov kuab tshuaj siv rau recrystallization qhov zoo tshaj plaws muab cov dej tsis zoo hauv cov kuab tshuaj txias, tab sis zoo rau middling solubility hauv cov kuab tshuaj kub. … Acetone nyiam ua cov kuab tshuaj zoo ntawm txhua qhov kub;
Puas yog acetone tib yam?
Tsis yog tag nrho '100%' acetone yog ua tib yam. … Qhov tseeb, lawv txawv ntawm lawv cov purities (99.50% txog 99.99%) thiab cov ntsiab lus ntawm impurities (cov uas ua rau lwm tus 0.01% txog 0.50%). Puas muaj ntau hom acetone? Muaj peb qib dav dav ntawm acetone purity;
Puas yog polyethylene terephthalate ntab?
Cov yas ntim siab dua xws li PET (polyethylene terephthalate), PVC (polyvinyl chloride), thiab PS (polystyrene solid), ua dab dej. … Qhov muab qhov tseem ceeb rau qhov ntom ntom ntawm cov khoom yuav yog cov khoom pellets lossis cib ntawm cov yas, thiab cov khoom ntab uas koj pom yuav muaj sib txawv vim qhov zoo li.
Thaum twg yog polyethylene terephthalate tsim?
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.
Dab tsi yog cross txuas polyethylene?
Cross-linked polyethylene, feem ntau abbreviated PEX, XPE lossis XLPE, yog ib daim ntawv ntawm polyethylene nrog cross-links. Nws yog siv feem ntau nyob rau hauv lub tsev cov kev pab cuam pipework systems, hydronic radiant cua sov thiab txias systems, domestic dej piping, thiab rwb thaiv tsev rau high tension hluav taws xob cables.
