Txawm hais tias graphene feem ntau hu ua "panacea", nws yog qhov tsis lees paub tias nws muaj cov khoom siv kho qhov muag zoo, hluav taws xob thiab cov khoom siv kho qhov muag, uas yog vim li cas kev lag luam thiaj li mob siab rau disperse graphene li nanofiller hauv polymers lossis inorganic matrice.Txawm hais tias nws tsis muaj cov txiaj ntsig zoo ntawm "tig lub pob zeb rau hauv kub", nws tseem tuaj yeem txhim kho ib feem ntawm kev ua haujlwm ntawm matrix nyob rau hauv ib qho kev nthuav dav thiab nthuav dav nws daim ntawv thov ntau yam.

Tam sim no, cov khoom siv sib xyaw graphene feem ntau tuaj yeem muab faib ua polymer-based thiab ceramic-based.Muaj kev tshawb fawb ntxiv rau yav dhau los.

Epoxy resin (EP), raws li cov khoom siv feem ntau siv, muaj cov khoom zoo adhesion, txhua yam muaj zog, kub tsis kam thiab dielectric zog, tab sis nws muaj ntau pawg epoxy tom qab kho, thiab crosslinking ceev yog siab dhau, yog li qhov tau txais. Cov khoom yog nkig thiab muaj kev cuam tshuam tsis zoo, hluav taws xob thiab thermal conductivity.Graphene yog cov khoom hnyav tshaj plaws hauv ntiaj teb thiab muaj cov khoom siv hluav taws xob zoo thiab thermal conductivity.Yog li ntawd, cov khoom sib xyaw ua los ntawm kev sib xyaw graphene thiab EP muaj qhov zoo ntawm ob qho tib si thiab muaj txiaj ntsig zoo ntawm daim ntawv thov.

     Nano Graphenemuaj thaj tsam loj, thiab molecular-theem dispersion ntawm graphene tuaj yeem tsim muaj zog sib cuam tshuam nrog cov polymer.Cov pab pawg ua haujlwm xws li pawg hydroxyl thiab cov txheej txheem tsim khoom yuav tig graphene rau hauv lub xeev wrinkled.Cov nanoscale irregularities txhim khu kev sib cuam tshuam ntawm graphene thiab polymer chains.Qhov saum npoo ntawm functionalized graphene muaj hydroxyl, carboxyl thiab lwm pawg tshuaj, uas tuaj yeem tsim muaj zog hydrogen bonds nrog polar polymers xws li polymethyl methacrylate.Graphene muaj qhov tshwj xeeb ntawm ob sab qauv thiab ntau yam khoom zoo heev, thiab muaj peev xwm siv tau zoo hauv kev txhim kho thermal, electromagnetic thiab mechanical zog ntawm EP.

1. Graphene nyob rau hauv epoxy resins - txhim kho electromagnetic zog

Graphene muaj cov khoom siv hluav taws xob zoo heev thiab cov khoom siv hluav taws xob, thiab muaj cov yam ntxwv ntawm kev siv tsawg thiab kev ua haujlwm siab.Nws yog qhov muaj peev xwm hloov kho rau epoxy resin EP.Cov kws tshawb fawb tau qhia qhov chaw kho mob GO rau hauv EP los ntawm in-situ thermal polymerization.Cov khoom zoo ntawm cov khoom sib txuas GO / EP (xws li cov khoom siv hluav taws xob, hluav taws xob thiab thermal, thiab lwm yam) tau zoo dua, thiab cov hluav taws xob conductivity tau nce los ntawm 6.5 qhov kev txiav txim ntawm qhov loj.

Hloov kho graphene yog sib xyaw nrog epoxy resin, ntxiv 2% ntawm kev hloov kho graphene, qhov chaw cia khoom ntawm epoxy composite nce 113%, ntxiv 4%, lub zog nce los ntawm 38%.Qhov tsis kam ntawm cov ntshiab EP resin yog 10 ^ 17 ohm.cm, thiab qhov kev tiv thaiv poob los ntawm 6.5 xaj ntawm qhov loj me tom qab ntxiv graphene oxide.

2. Kev siv graphene hauv epoxy resin - thermal conductivity

Ntxivcarbon nanotubes (CNTs)thiab graphene rau epoxy resin, thaum ntxiv 20% CNTs thiab 20% GNPs, thermal conductivity ntawm cov khoom sib xyaw tuaj yeem ncav cuag 7.3W / mK.

3. Daim ntawv thov ntawm graphene nyob rau hauv epoxy resin - nplaim retardancy

Thaum ntxiv 5 wt% organic functionalized graphene oxide, tus nqi hluav taws xob nce ntxiv los ntawm 23.7%, thiab thaum ntxiv 5 wt%, nce 43.9%.

Graphene muaj cov yam ntxwv zoo heev rigidity, seem stability thiab toughness.Raws li kev hloov kho ntawm epoxy resin EP, nws tuaj yeem txhim kho cov khoom siv kho tshuab ntawm cov khoom sib xyaw, thiab kov yeej qhov loj ntawm cov khoom siv tsis zoo tib yam thiab kev hloov kho qis thiab lwm yam tsis zoo.Cov kws tshawb fawb tau siv tshuaj hloov kho GO / EP nanocomposites.Thaum w(GO) = 0.0375%, lub zog compressive thiab toughness ntawm cov sib xyaw ua ke tau nce los ntawm 48.3% thiab 1185.2% feem.Cov kws tshawb fawb tau kawm txog qhov kev hloov pauv ntawm kev qaug zog thiab qhov hnyav ntawm GO / EP system: thaum w(GO) = 0.1%, tensile modulus ntawm cov khoom sib xyaw tau nce li ntawm 12%;thaum w(GO) = 1.0%, Lub zog flexural thiab lub zog ntawm cov khoom sib xyaw tau nce 12% thiab 23%, feem.