Kev npaj thiab cov yam ntxwv ntawm polyimide zaj duab xis / graphene polymer khoom

Raws li cov lus ceeb toom, cov txheej txheem kev npaj ntawm polyimide / graphene cov ntaub ntawv sib xyaw feem ntau yog: kev sib tov sib xyaw, hauv-situ polymerization thiab yaj blending.

(1) Kev sib xyaw ua ke

Kev sib xyaw ua ke: Tom qab sib xyaw graphene thiab graphene derivatives kom tawg mus rau hauv cov tshuaj polymer, thiab tom qab ntawd tshem tawm cov kuab tshuaj, cov ntaub ntawv sib xyaw polymer nanocomposite tuaj yeem npaj tau. Vim hais tias graphene yuav luag tsis muaj solubility, thiab graphene yog nquag rau interlayer aggregation. Yog li, cov kws tshawb fawb tau qhia cov pab pawg ua haujlwm organic rau hauv cov qauv ntawm graphene txhawm rau ua kom cov solubility ntawm graphene thiab graphene derivatives. Vim tias graphene oxide yog dej-soluble, nws tuaj yeem sib xyaw ncaj qha nrog nws cov tshuaj colloidal thiab dej-soluble polymer aqueous tov. Tom qab sib tov, kev kho ultrasonic thiab molding txheej txheem, npaj cov khoom siv polymer / graphene oxide muaj cov khoom siv zoo heev. Nyob rau hauv kev npaj ntawm graphene oxide thiab dej-insoluble polymers los ntawm kev sib xyaw los npaj cov ntaub ntawv sib xyaw, cov kev ua haujlwm ntawm graphene oxide yog qhov muaj txiaj ntsig zoo los txhim kho nws cov solubility hauv cov kuab tshuaj organic thiab muaj zog ua ke nrog polymers.

(2) Nyob rau hauv-situ polymerization

Qhov sib txawv loj tshaj plaws ntawm txoj kev sib tov sib xyaw thiab cov txheej txheem hauv-situ polymerization yog cov txheej txheem ntawm polymer synthesis thiab kev sib xyaw ntawm graphene lossis graphene derivatives tau ua tib lub sijhawm, thiab cov saw hlau polymer tsim los ntawm polymerization thiab graphene lossis graphene. derivatives muaj qhov sib txawv. Strong covalent bond effect. Cov khoom siv polymer / graphene composite tau los ntawm txoj kev no muaj qhov cuam tshuam zoo dua, yog li nws txoj kev ua haujlwm dav dav tau zoo dua qub. Ntawm lawv, cov khoom siv polymer / graphene composite npaj los ntawm kev siv nylon-6, polystyrene, epoxy resin, thiab lwm yam raws li cov polymer matrix yog tag nrho cov npaj los ntawm in-site polymerization.

(3) Kev sib xyaw ua ke

Nyob rau hauv cov txheej txheem ntawm melting, cov khoom siv polymer / graphene composite tuaj yeem npaj yam tsis muaj cov kuab tshuaj. Nws tsuas yog yuav tsum sib tov graphene lossis graphene derivatives thiab cov polymer nyob rau hauv lub xeev molten nyob rau hauv cov nyhuv ntawm kub thiab siab shearing quab yuam. Nws tau tshaj tawm tias ntau yam khoom siv polymers (xws li polyester thiab polycarbonate, polyethylene 2,6-naphthalate) / cov khoom siv graphene sib xyaw tau npaj los ntawm kev sib xyaw ua ke. Kuv kuj tau sim melting thiab compounding ntawm polylactic acid / graphene thiab polyethylene terephthalate / graphene cov ntaub ntawv. Txawm hais tias txoj kev no tuaj yeem paub qhov kev npaj loj txawm tias nws txoj haujlwm yooj yim, daim ntawv graphene tau tawg vim lub zog shear quab yuam siab thaum lub sijhawm npaj.