Polypropylene (PP luv luv) yog ib hom thermoplastic yas uas yog dav siv nyob rau hauv ntau yam teb vim nws zoo heev lub cev thiab tshuaj. Txawm li cas los xij, hais txog seb polypropylene puas yog hluav taws kub, peb yuav tsum sib tham txog nws kom meej los ntawm qhov kev xav ntawm nws cov khoom siv thiab kev siv tswv yim.
Cov yam ntxwv tseem ceeb ntawm polypropylene
Polypropylene yog lub siab molecular compound tsim los ntawm polymerization ntawm propylene monomers. Nws muaj cov yam ntxwv hauv qab no:
- Tsawg ntom: Qhov ntom ntawm polypropylene yog li ntawm 0.9g/cm³, uas yog lub teeb tshaj plaws ntawm tag nrho cov yas.
- Lub zog siab: Nws muaj lub zog tensile siab thiab cuam tshuam tsis kam.
- Tshuaj tiv thaiv corrosion: Nws muaj qhov ua tau zoo rau feem ntau cov kua qaub, alkalis thiab lwm yam tshuaj reagents.
- Kev ua haujlwm kub zoo: Nws tuaj yeem siv rau hauv qhov chaw kub siab tshaj 100 degree thiab tuaj yeem tiv taus qhov kub siab dua rau lub sijhawm luv luv.
Hluav taws kub tsis kam ntawm polypropylene
Txawm hais tias polypropylene muaj ntau qhov zoo, nws qhov hluav taws kub tsis zoo. Cov hauv qab no yog qee cov ntsiab lus tseem ceeb txog kev tua hluav taws ntawm polypropylene:
1. Flammability: Polypropylene yog cov khoom siv hluav taws xob. Nws kub hnyiab tau sai heev thaum nws ntsib cov nplaim taws thiab tso pa tawm cov pa phem. Yog li ntawd, ntshiab polypropylene tsis yog ib qho kev xaiv zoo tshaj plaws hauv daim ntawv thov scenarios uas yuav tsum tau tiv thaiv hluav taws.
2. Cov yam ntxwv combustion: Thaum polypropylene kub hnyiab, nws tsim carbon monoxide, carbon dioxide thiab lwm yam teeb meem gases. Cov pa roj no tsis yog tsuas yog tsim kev puas tsuaj rau tib neeg lub cev xwb, tab sis kuj tseem tuaj yeem ua rau muaj kev phom sij rau hauv cov chaw kaw.
3. Kev ntsuas kev txhim kho: txhawm rau txhim kho qhov hluav taws kub tsis kam ntawm polypropylene, qee cov nplaim hluav taws xob feem ntau yog ntxiv. Cov additives no tuaj yeem txo qhov kub ntawm cov khoom thiab tseem ua rau nws tus kheej tua. Cov nplaim hluav taws kub hnyiab muaj xws li phosphorus nplaim retardants, halogen nplaim retardants, thiab inorganic nplaim retardants (xws li txhuas hydroxide thiab magnesium hydroxide).
Kev tiv thaiv hluav taws hauv kev siv tswv yim
Hauv kev siv tswv yim, qhov hluav taws kub tsis kam ntawm polypropylene tuaj yeem ntsuas thiab txhim kho hauv cov hauv qab no:
- Kev hloov pauv nplaim hluav taws: Los ntawm kev ntxiv cov nplaim hluav taws rau polypropylene, nws cov hluav taws kub tuaj yeem txhim kho tau zoo. Piv txwv li, qhov sib ntxiv ntawm phosphorus nplaim retardants tuaj yeem ua rau cov khoom tsim cov txheej txheem carbonized thaum hlawv, yog li tiv thaiv kom tsis txhob muaj nplaim taws ntxiv.
- Cov ntaub ntawv sib xyaw: Muab cov polypropylene nrog lwm cov ntaub ntawv nrog cov hluav taws kub zoo dua los ua cov ntaub ntawv sib xyaw. Qhov no tsis tsuas yog khaws cov khoom zoo ntawm polypropylene, tab sis kuj tseem txhim kho qhov hluav taws kub ntawm tag nrho cov khoom.
- Ib puag ncig daim ntawv thov: Thaum xaiv cov ntaub ntawv, qhov chaw thov tshwj xeeb yuav tsum tau txiav txim siab. Yog tias daim ntawv thov scenario muaj cov cai nruj ntawm kev tiv thaiv hluav taws, nws yuav tsim nyog xaiv lwm yam khoom siv hluav taws xob ntau dua lossis ua kev kho hluav taws kub tshwj xeeb ntawm polypropylene.
Xaus
Feem ntau, polypropylene nws tus kheej tsis yog cov khoom siv hluav taws kub. Txawm li cas los xij, los ntawm kev hloov kho kom tsim nyog thiab kev sib xyaw ua ke, nws qhov hluav taws kub kuj tuaj yeem txhim kho kom tau raws li cov kev xav tau ntawm cov ntawv thov tshwj xeeb. Hauv kev siv cov tswv yim, nws yog ib qho tseem ceeb heev uas yuav tsum xaiv cov ntaub ntawv zoo thiab kev hloov kho, uas tuaj yeem tsis tsuas yog ua kom muaj kev ua tau zoo ntawm cov ntaub ntawv, tab sis kuj txhim kho kev nyab xeeb thiab kev ntseeg siab ntawm tag nrho cov txheej txheem.
Los ntawm kev soj ntsuam saum toj no, peb tuaj yeem nkag siab zoo dua qhov hluav taws kub ntawm polypropylene thiab nws cov kev ua tau zoo hauv kev siv tswv yim. Kuv vam tias tsab xov xwm no tuaj yeem muab cov ntaub ntawv tseem ceeb rau koj los pab koj txiav txim siab paub ntau ntxiv thaum xaiv thiab siv cov ntaub ntawv polypropylene.
