Kev faib tawm ntawm cov polymer sib txuas
Polymer cov khoom sib txuas tau faib ua ob pawg: cov txheej txheem polymer cov txheej txheem sib txuas thiab cov ntaub ntawv polymer ua haujlwm zoo. Cov qub yog qhov tseem ceeb tshaj plaws. Cov polymeric cov qauv sib xyaw ua ke muaj ob yam: ib qho chaw ua haujlwm ntxiv. Nws yog cov ntaub nrog lub zog loj, siab modulus thiab kub tsis kam, xws li iav fiber ntau, silicon nitride whisker, boron fiber thiab fiber ntau saum toj no. 2 cov khoom siv matrix. Feem ntau cov nplaum, xws li cov dej tsis muaj cov cob polyester, epoxy resin, phenolic resin, polyimide thiab lwm cov thermosetting resins thiab thermoplastic resins xws li styrene thiab polypropylene. Lub zog tshwj xeeb thiab piv ntawm no puas. Cov modulus yog siab dua li ntawm cov hlau, thiab nws yog qhov khoom siv tsis tseem ceeb rau kev tiv thaiv kev tiv thaiv thiab kev siv tshuab. Cov khoom siv ua haujlwm polymer ua haujlwm kuj yog tsim ntawm cov khoom siv resin matrix thiab cov khoom siv muaj cov haujlwm tshwj xeeb, xws li qee cov ntaub ntawv ntawm conductivity, semiconductivity, magnetism, luminescence, piezoelectricity, thiab lwm yam, thiab cov sib txuas nrog cov binder kom nws muaj qhov tshiab nta. Sib nqus foob xws li tub yees yog cov khoom siv sib xyaw.