Qhov sib txawv tseem ceeb ntawm polyacrylates thiab polyesters yog tias polyacrylates muaj cov acrylic acid rov ua dua, hos polyester muaj cov ester rov ua dua.
Polyacrylates thiab polyesters yog cov khoom siv polymer nrog ntau qhov rov ua dua tshiab. Lawv txawv ntawm ib leeg raws li hom kev rov ua dua tshiab, kuj ua rau cov khoom sib txawv ntawm lub cev thiab tshuaj lom neeg. Lub monomer rau polyacrylates yog acrylic acid. Muaj ob lub monomers uas tsim cov qauv ntawm polyester; Cov monomers rau polyester yog carboxylic acids thiab cawv.
YPolyacrylates yog dab tsi?
Lo lus polyacrylate yog hais txog cov khoom siv polymer uas muaj cov acrylate rov ua dua. Nws yog ib hom hluavtaws cob. Thiab, nws yog tsim los ntawm polymerization ntawm acrylic esters. Yog li, lub ntsiab lus ntawm polyacrylates yog acrylic polymers thiab acrylics. Tsis tas li ntawd, cov acrylate monomers muaj cov qauv ntawm acrylic acid. Muaj ib pawg carboxyl thiab ib pawg vinyl. Cov pawg carboxylic acid feem ntau yog ester kawg lossis nitrile kawg. Ntxiv rau qhov ntawd, muaj cov derivatives ntawm acrylates xws li methyl methacrylates.
Daim duab 01: Cov qauv tshuaj ntawm Acrylic Acid
Ntxiv mus, cov khoom no tseem ceeb heev vim nws cov pob tshab zoo li, tiv thaiv kev tawg, elasticity, thiab lwm yam. Muaj ntau daim ntawv thov ntawm polyacrylates. Piv txwv li, cov polymers no yog cov khoom xyaw tseem ceeb hauv cov xim ua cov txheej txheem dej thiab cov binders. Tsis tas li ntawd, cov polymer no yog siv los tsim cov xim acrylic, acrylic fiber, thickeners xws li sodium polyacrylate, acrylic resin, super kua nplaum, thiab lwm yam.
Polyesters yog dab tsi?
Polyester yog ib pab pawg ntawm cov saw ntev polymers uas muaj ester pawg hauv cov saw tseem ceeb. Polyesters yog chemically tsim los ntawm tsawg kawg yog 85% los ntawm qhov hnyav ntawm ester thiab dihydric cawv thiab terephthalic acid. Hauv lwm lo lus, cov tshuaj tiv thaiv ntawm carboxylic acids thiab cawv, uas tsim cov esters, ua rau tsim cov polyester.
Daim duab 02: Ib daim ntaub ua los ntawm polyester
Ntxiv mus, polyesters yog tsim los ntawm condensation cov tshuaj tiv thaiv ntawm dicarboxylic acids thiab cawv (diols). Tsis tas li ntawd, muaj ob lub ntsiab ntawm polyesters li saturated polyesters thiab unsaturated polyesters. Saturated polyesters yog tsim los ntawm cov pob txha saturated. Txij li thaum lawv saturated, cov polyesters no tsawg dua los yog tsis reactive. Meanwhile, unsaturated polyesters yog tsim los ntawm vinyl unsaturation. Yog li ntawd, cov ntaub ntawv polyester no reactive heev.
Tsis tas li ntawd, polyester fibers muaj zog heev thiab ruaj khov. Nws yog vim polyesters feem ntau tiv taus cov tshuaj, ncab, shrinking, thiab lwm yam. Cov kev siv feem ntau ntawm polyester yog nyob rau hauv kev lag luam textile, kev lag luam khoom noj khoom haus (rau cov ntim khoom noj), thiab lwm yam.
Qhov txawv ntawm Polyacrylates thiab Polyesters yog dab tsi?
Polyacrylates thiab polyesters yog cov ntaub ntawv polymer uas muaj ntau qhov rov ua dua tshiab. Qhov sib txawv tseem ceeb ntawm polyacrylates thiab polyesters yog tias polyacrylates muaj acrylic acid rov ua dua units, hos polyester muaj cov ester rov ua dua. Tsis tas li ntawd, cov monomer rau polyacrylates yog acrylic acid. Hauv qhov sib piv, muaj ob lub monomers uas tsim cov qauv ntawm polyester; Cov monomers rau polyester yog carboxylic acids thiab cawv.
Tsis tas li ntawd, polyacrylate muaj pawg carboxyl thiab pawg vinyl thaum polyester muaj pawg dicarboxylic thiab pawg cawv.
Cov lus hauv qab no qhia txog qhov sib txawv ntawm polyacrylates thiab polyesters.
Summary – Polyacrylates vs Polyesters
Polyacrylates thiab polyesters yog cov ntaub ntawv polymer uas muaj ntau qhov rov ua dua tshiab. Qhov sib txawv tseem ceeb ntawm polyacrylates thiab polyesters yog tias polyacrylates muaj cov acrylic acid rov ua dua, hos polyester muaj cov ester rov ua dua. Lub monomer rau polyacrylates yog acrylic acid. Muaj ob lub monomers uas tsim cov qauv ntawm polyester; Cov monomers rau polyester yog carboxylic acids thiab cawv.
