Txawm hais tias graphene feem ntau yog dubbed "panacea", nws yog vim li cas thiaj li muaj cov khoom siv hluav taws xob tsis zoo, yog vim li cas thiaj muaj cov khoom siv hluav taws xob zoo li cov nanformers hauv cov polymers lossis inorganic matrice. Txawm hais tias nws tsis muaj cov txiaj ntsig zoo ntawm "tig pob zeb rau hauv matrix hauv qee qhov ntau thiab nthuav nws cov ntawv thov ntau.

Tam sim no, cov ntaub ntawv graphene composite composite tuaj yeem faib ua ke rau hauv polymer-based thiab ceramic-based. Muaj cov kev tshawb fawb ntxiv ntawm cov qub.

Epoxy Resin (EP), raws li cov khoom siv uas siv tau zoo, tab sis muaj zog tshaj plaws, yog li cov khoom lag luam uas muaj zog, thiab muaj zog tawm tsam, thiab muaj zog tawm tsam, hluav taws xob tsis kam, hluav taws xob ua haujlwm. Graphene yog qhov khoom nyuaj tshaj plaws nyob hauv lub ntiaj teb thiab muaj hluav taws xob zoo thiab thermal conductivity. Yog li no, cov khoom siv sib xyaw ua los ntawm compounding graphene thiab EP muaj qhov zoo ntawm ob qho tib si thiab muaj cov txiaj ntsig zoo.

     Nano grapheneMuaj thaj chaw loj thaj chaw, thiab cov molecular-theem dispersion ntawm graphene tuaj yeem tsim interface muaj zog nrog cov polymer. Cov pab pawg ua haujlwm xws li pawg hydroxyl thiab cov txheej txheem ntau lawm yuav tig graphene rau hauv lub xeev wrinkled. Cov nanoscale tsis xwm yeem txhim kho kev sib cuam tshuam ntawm graphene thiab polymer chains. Qhov saum npoo ntawm functalized graphene muaj hydroxyl, carboxyl thiab lwm pab neeg tshuaj lom neeg muaj kuab lom xws li polymethyl methamrylate. Graphene muaj ib qho kev sib txawv ntawm ob qho qauv thiab muaj peev xwm zoo tshaj plaws hauv kev txhim kho lub thermal, electromagnetic thiab cov khoom siv kho mob ntawm EP.

1. Graphene hauv epoxy resins - txhim kho cov khoom siv hluav taws xob

Graphene muaj hluav taws xob tau zoo thiab muaj hluav taws xob cov peev txheej, thiab muaj cov yam ntxwv ntawm cov tshuaj tsawg thiab kev ua haujlwm siab. Nws yog ib qho kev ua tau zoo hloov kho rau Epoxy Resin EP. Cov kws tshawb nrhiav nthuav tawm cov kev kho sab nrauv rau hauv EP los ntawm hauv-situ thermal polymerization. Qhov kev nkag siab ntawm cov kev coj mus / EP sib xyaw (xws li siv hluav taws xob, thiab lwm yam kev ua haujlwm tau nce los ntawm 6.5 kev txiav txim ntawm qhov ntau.

Mackenified Graphene yog compounded nrog epoxy cob, ntxiv 2% ntawm kev hloov kho ntawm Epoxy cov khoom siv nce los ntawm epoxy composite nce los ntawm epoxy composite nce los ntawm epoxy composite nce los ntawm epoxy composite nce los ntawm epoxy composite nce los ntawm 113%, lub zog nce los ntawm 38%. Qhov tsis kam ntawm cov ntshiab ep resin yog 10 ^ 17 ohm.cm, thiab cov kev txiav txim siab tiv taus ntawm 6.5 txiav txim ntawm qhov ntau tom qab ntxiv graphene oxide.

2. Kev thov ntawm graphene hauv epoxy cob qhia - thermal conductivity

NtxivCov Nanotubes (CNTs)Thiab graphene rau epoxy cob, thaum ntxiv 20% CNTs thiab 20% gnps, lub thermal conductivity ntawm cov khoom siv nrog tuaj yeem ncav cuag 7.3w / MK.

3. Kev thov ntawm graphene hauv epoxy cob qhia - nplaim retardancy

Thaum ntxiv 5 wt% organic ua hauj lwm graphene oxide, cov nplaim taws retardant tus nqi nce los ntawm 23.7%, thiab thaum ntxiv 53.9%.

Graphene muaj cov yam ntxwv ntawm kev nruj me ntsis, seem ruaj khov thiab tawv. Raws li kev hloov kho ntawm Epoxy Resin EP, nws tuaj yeem txhim kho cov cuab yeej siv ntau yam ntawm cov neeg siv hluav taws xob loj thiab tsis muaj peev xwm hloov kho thiab lwm yam shortcomings. Cov kws tshawb nrhiav thov siv chemically hloov mus / EP nanocomposites. Thaum w (mus) = 0.0375%, lub zog compressive thiab kev sib xyaw ntawm cov composites tau nce los ntawm 48.3% thiab 1185.2% feem. Cov kws tshawb fawb tau kawm cov kev hloov pauv ntawm kev qaug zog tsis kam thiab tawv tawv: thaum w (mus) = 0.1%, lub tensile modulus ntawm kev sib xyaw ua ke nce txog 12%; Thaum w (mus) = 1.0%, lub zog ntawm cov composite tau nce los ntawm 12% thiab 23%, feem.