Lub Aerospace kev lag luam txoj kev thov rau lub teeb, high-zog, thiab cov cuab yeej txhim khu kev qha tau zoo nyob hauv ntau cov qauv tsim qauv thiab kev txhim kho hluav taws xob. Cov kab lus no qhia txog kev txhawb nqa kev cuam tshuam nrog cov kev sib xyaw ua ke nrog cov kev sib cav nrog cov kev sib cav nrog cov pa roj carbon monomal, Siv Kev Kawm Qeb Nrab-Qib Kawm, nws tau xaiv cov txheej txheem kev ua haujlwm ntawm cov txheej txheem kev txhim kho molecular txuas ntxiv rau kev tsim kho txuas ntxiv rau tom ntej-tiam kev tsim kho vaj tse tom ntej.
Carbon fiber ntxiv ntxiv Epoxy Composites (CFRP), CFRP tau dhau los ua ib qho kev ua haujlwm tseem ceeb, nkees ua rau muaj kev phom sij, thiab tsim qauv tsim kho. Txawm li cas los xij, cov kev sib tw ua: tsis txaus koom nrog Carrealness, kev ua tsis zoo los ntawm cov kab ke loj cross, thiab porosity tswj lub sijhawm tsim kev tsim khoom. Cov kev tshawb fawb tsis ntev los no qhia tau ntau qhov kev txhawb nqa kev cai thiab Interfacial tshuaj siv tshuab. Synergistic cuam tshuam los ntawm nanoparticles, whiskered qauv, thiab molecular-qib interface tsim muaj peev xwm txhim kho thauj khoom hloov kev ua haujlwm thiab puas kam rau siab.
I. Multi-State Carbon Fiber Hloov Kho
1,Tshuaj lom neeg Grafting & Oxidation
Oxidation: Roj-theem (O₃ / O₂ Mixtures) lossis kua-theem (HNO₃ ITXIV)
Grafting: amino-terminated naphthalene diaphthalide (NDI) lossis polyethyleneimine (Pei) graft tsim kev sib tsoo ntawm cov fibers thiab epoxy. Pei (mw =600) nce interfacial shear zog (yog tias yog 38.9% thiab Flexural zog los ntawm 36.7%.
2,Nanoreincorforcence Kev Hloov Pauv Hloov
CNT Grafting: CNTS anchored ntawm π-π carboxyl-amine cov kev tshuaj tiv thaiv tsim "rivet" qauv. Ntawm CF-Pei / CNT-Cooh {4}}}}}}: 1 pawg piv, yog tias muaj zog ntxiv los ntawm 55.2%.
Nkag mus rau Anchoring: Daim ntawv txheej txheej ntsug mus mus rau daim ntawv foos nruab nrab-modulus interlayers rau kev ntxhov siab hloov. Qhov Zoo CF-Pei / Mus =40}}}: 1 piv tau ua tiav nanoscale interlayer tswj qhov chaw sib nrug.
3,Whiskerization & Nanofiber Interfaces
Chlorinated Aramid Nanofiber (CIF) Cov Txheej Txheem Ci-HydrogeSs ntawm Dip
Ii. Epoxy Matrix Kev tswj tsis meej & Rheology tswj
1,Reactive interpenetrating network
Core-plhaub roj hmab cov nplais lossis thermoplastic / epoxy sib xyaw ua ke interpenetrating network. Ntawm 10% cov ntsiab lus nyuaj, compression-cuam tshuam (CAI) muaj zog nce siab txog 40%, nrog tsuas yog 6 degree tg txo.
2,Rheology Ua Kom Zoo
Refuntive mob (piv txwv li, butyl glycidyl ether) txo cov resin viscosity los ntawm 5000 txog 1500 mpayi consting fiber ntau impregnation thiab txo qis kev ua siab dawb.
III. Ntau kauj txheej txheej txheem sennergy
1,Interface kev cai & yaj impregnation
Compatibilizers txhim kho fiber ntau / thermoplastic adhesion (piv txwv li, tseem ceeb yog tias kev txhim kho).
Transcrystalinity tswj: Kub / sijhawm ua kom tau zoo nce transcrystalline txheej thickness thiab interfacial lub zog.
2,AERPOSPACE PROREG kev kawm
T800 Carbon Fiber / Epoxy: Apeal Density 120 G / M², Resin Cov Ntsiab Lus 38%, Tensile Lub Zog 2800 Mpa (cov ntaub ntawv ntawm daim tawv nqaij).
Toray T1100g / 3960 Resin: Tensile muaj zog 6.3 GPA, Modulus 310 GPA (Airbus A350 Fuselage A350 Fuselage A350 Fuselage).
IV. Interfacial Mechanisms & Cov Cim
Multi-Scale interface Qauv
- Mechanical interlock txoj kev xav: nto roughness txhim kho fiber / resin anchoring.
- Tshuaj lom neeg Kev Koom Tes Lub Tswv Yim: Kev sib haumalent Bonds ntawm cov pab pawg ua haujlwm ua haujlwm.
- Interphase Theory Txoj Kev Tshawb Fawb: Nruab Nrab-Modulus interlayers mortificate ntxhov siab.
Cov txheej txheem me me
- XPS: Kev tshuaj xyuas kom pom kev.
- SEM: interface morphology / ua tsis tiav.
- AFM: Roughness / Elastic Modulus gradient mappient.
V. Cov lus xaus & Outlook
Epoxy-based carbon fiber ntau cov kev hloov kho fiber ntau, matrix thiav, thiab cov txheej txheem sorsospace ua ntej cov ntawv thov ua ntej. Cov Lus Qhia Yav Tom Ntej:
- Cov khoom siv xyoob ntoo raws li cov compatibilizers> txuas ntxiv dua tshiab los txo cov kev cuam tshuam ib puag ncig.
- Cov Menyuam ntxig digital: cov txheej txheem sim raws li kev ua kom pom kev porosity thiab fiber ntau.
- Kev Kho Mob Rau Yus Tus Kheej: Dynamic Kev Sib Koom Tes Kev Sib Tw / Supramolecular Kev Sib Tham Rau Kev Kho Kom Zoo.
Los ntawm Interdisciplinate Interlation interationation rau hauv cov ntawv thov huab cua zoo li lub cav thiab chaw sib sib zog nqus chaw, muaj zog dua, thiab ntse dua, thiab ntse dua, thiab ntse dua rau hauv lub zog.
Source: Composites eco-voj voog