Qhov sib txawv tseem ceeb ntawm IPN thiab kev sib xyaw yog tias IPN muaj ob lub ntsiab lus polymeric uas yog ob qho tib si sib txuas, qhov sib xyaw muaj ob lossis ntau dua polymers uas sib xyaw ua ke.
Lub sij hawm IPN sawv cev rau kev sib cuam tshuam cov tes hauj lwm polymer. Ib qho kev sib xyaw polymer lossis cov khoom sib xyaw polymer yog cov tswv cuab ntawm cov chav kawm ntawm cov khoom uas zoo sib xws rau cov hlau alloys.
IPN yog dab tsi?
Lub sij hawm IPN sawv cev rau kev sib cuam tshuam cov polymer network. Nws yog ib qho polymer uas muaj ob los yog ntau lub tes hauj lwm uas tsawg kawg yog ib feem interlaced ntawm lub polymer scale, tab sis lawv tsis yog covalently bonded rau ib leeg. Peb tsis tuaj yeem cais cov tes hauj lwm yam tsis tau rhuav tshem cov tshuaj lom neeg. Muaj peev xwm muaj ob lossis ntau lub tes hauj lwm uas tuaj yeem piav qhia tias kev sib koom ua ke hauv txoj hauv kev uas cov tes hauj lwm sib txuas thiab tsis tuaj yeem sib nrug. Ntxiv mus, cov tes hauj lwm tsis tuaj yeem rub tawm; Txawm li cas los xij, lawv tsis raug khi rau ib leeg los ntawm kev sib cog lus tshuaj.
Daim duab 01: Tus Qauv ntawm Cadmium Cyanide Sample
Feem ntau, kev sib xyaw ntawm ob lossis ntau dua polymers tsis tuaj yeem tsim IPN. Ntxiv mus, IPN tsis tuaj yeem tsim los ntawm lub network polymer uas muaj ib hom monomers uas raug khi rau ib leeg ua ib lub network xws li heteropolymer ntawm copolymer. Tsis tas li ntawd, muaj peev xwm muaj qee qhov kev sib txuas ntawm cov khoom siv hluav taws xob sib txuas uas yog luv luv li SIPN. Kuj tseem tuaj yeem muaj pseudo-interpenetrating polymer networks hu ua PIPN. Feem ntau, thaum tsim IPNs lossis SIPNs, peb tuaj yeem soj ntsuam qhov tsim ntawm cov khoom sib txawv ib txhij lossis ua ntu zus.
Thaum xav txog cov khoom tseem ceeb ntawm IPN, cov molecular intermixing tuaj yeem ua rau cov iav hloov pauv hauv cov khoom siv IPN thaum piv rau cov khoom siv polymers. Qhov no yog qhov tshwj xeeb yam ntxwv uas tuaj yeem muab cov khoom siv ua kom zoo tshaj plaws ntawm cov khoom siv hluav taws xob ntawm ntau qhov kub thiab ntau zaus.
Kev sib xyaw yog dab tsi?
A polymer blend los yog polymer sib tov yog ib tug tswv cuab ntawm ib chav kawm ntawm cov khoom uas zoo sib xws rau cov hlau alloys. Hauv kev sib xyaw polymer, tsawg kawg yog ob lub polymers sib xyaw ua ke los tsim cov khoom tshiab uas muaj cov khoom sib txawv ntawm lub cev.
Daim duab 02: Tsim cov Polymer Blend
Nws muaj peb pawg dav ntawm cov khoom siv polymer: immiscible polymer blends, sib xyaw polymer sib xyaw, thiab miscible polymer blends. Siv lub sij hawm polymer alloy rau cov khoom siv no tsis tsim nyog vim tias cov khoom siv polymer muaj xws li multiphase copolymers, uas tsis suav nrog cov khoom siv polymer tsis sib haum.
Qee yam piv txwv rau cov khoom siv polymer muaj xws li homopolymers xws li polyphenyl oxide thiab polyethylene terephthalate thiab copolymer xws li polypropylene thiab polycarbonate. Peb tuaj yeem siv cov polymer sib xyaw ua cov thermoplastic elastomers. Thaum xav txog keeb kwm ntawm kev npaj polymer sib xyaw, thawj qhov kev npaj thiab hloov kho cov txheej txheem rau cov tshuaj no yog polymerization.
Qhov txawv ntawm IPN thiab Blend yog dab tsi?
Lub sij hawm IPN sawv cev rau kev sib cuam tshuam cov polymer network. Ib qho kev sib xyaw polymer lossis cov khoom sib xyaw polymer yog cov tswv cuab ntawm chav kawm ntawm cov khoom uas zoo sib xws rau cov hlau alloys. Qhov sib txawv tseem ceeb ntawm IPN thiab kev sib xyaw yog tias IPN muaj ob lub polymeric Cheebtsam uas yog ob qho tib si sib txuas, qhov sib xyaw muaj ob lossis ntau dua polymers uas sib xyaw ua ke.
Hauv qab no yog cov ntsiab lus ntawm qhov sib txawv ntawm IPN thiab sib xyaw ua ke hauv daim ntawv qhia rau kev sib piv ntawm ib sab.
Summary – IPN vs Blend
IPN thiab polymer sib xyaw yog cov ntsiab lus tseem ceeb hauv cov tshuaj polymer. Qhov sib txawv tseem ceeb ntawm IPN thiab kev sib xyaw yog tias IPN muaj ob lub ntsiab lus polymeric uas yog ob qho tib si sib txuas, qhov sib xyaw muaj ob lossis ntau dua polymers uas sib xyaw ua ke.
