Polymers thiab Plastics tau ntsib hauv lub neej txhua hnub thiab siv rau ntau lub hom phiaj.Ntau cov khoom siv hauv tsev niaj hnub muaj xws li cov yas thiab cov polymers.Yog tias ib tug neeg nug koj ntawm qhov chaw los piav qhia qhov sib txawv ntawm polymer thiab yas, koj puas tuaj yeem muab cov lus teb sib xyaw?Niaj hnub no peb tham txog qhov sib txawv ncaj nraim ntawm ob, muab qee qhov kev siv niaj hnub piv txwv ntawm cov yas thiab polymers, thiab sau cov txiaj ntsig thiab qhov tsis zoo ntawm txhua tus.
Qhov sib txawv tseem ceeb ntawm cov polymers thiab cov yas yog cov yas yog ib hom polymer.Plastics muaj xws li ib tug ntev saw ntawm polymers, qhov twg polymers yog tsim los ntawm me me, uniform molecules.
Polymers yog dab tsi?
Polymers yog cov hlua txuas ntev uas muaj cov monomers.Lub monomer yog ib qho molecule uas tuaj yeem txuas rau lwm cov molecules zoo tib yam.Polymers yog cov molecules loj heev uas ua los ntawm qhov loj me me, zoo tib yam molecules.Polymers muaj qhov sib txawv ntawm lub cev thiab tshuaj pleev ib ce dua li lawv cov monomers, thiab ntau yam tshwj xeeb, lawv cov khoom tuaj yeem raug kho raws li lawv lub hom phiaj tseem ceeb.Muaj ntau hom polymers.Ntxiv cov polymers yog tsim thaum cov monomers tsim ob daim ntawv cog lus nrog cov pa roj carbon atoms.Condensation polymers yog tsim thaum ob monomers koom nrog thiab cov dej molecule raug tshem tawm.Tseem muaj ib txwm tshwm sim thiab tib neeg tsim cov polymers.
Kev siv Polymer
- Lubricants
- Adhesives
- Zaj duab xis
- Xim
- Fibers
Pros
- pheej yig ua
- Ntau yam
- Qee zaum recyclable
Cons
- Ua los ntawm cov roj
- Muab cov pa phem thaum hlawv
- Hom uas tsis tuaj yeem rov ua dua tau nce nqi rov ua dua tshiab
Plastics yog dab tsi?
Cov yas yog cov khoom siv semi-organic uas tuaj ntawm cov roj lossis roj av.Lawv niaj hnub sau npe ua polymers, raws li lawv muaj cov polymers.Plastics yog tsim los ntawm condensation thiab ntxiv cov tshuaj tiv thaiv polymerization.Lawv raug cais raws li thermosetting polymers lossis thermoplastic polymers.Thermosetting polymers solidify mus rau hauv ib tug ruaj khov tsim thiab zoo li.Thermoplastic polymers tuaj yeem ua kom sov thiab rov ua dua rau lub sijhawm tsis txwv.
Kev siv yas
- Ntim
- Cov khoom ua si
- Cov khoom siv ncaws pob
- Automotive qhov chaw
- Aerospace qhov chaw
Pros
- Ntau yam heev
- Yooj yim
- Durable
- Translucent (tuaj yeem yog qhov tsim nyog hloov rau iav)
Cons
- Qee hom siv tsis tau
- Kev tsim khoom thiab kev tshem tawm emits tshuaj lom neeg rau ib puag ncig
Post lub sij hawm: May-09-2019