Carbon material dinghku a madung hpung shang langai hku nna, graphite sheets ni gaw shanhte a n-gun, electronic, tsi hpaji, hte aerospace ni hta jai lang na myit mada lam ni hpe madun dan ai, shanhte a grai kaja ai nbung hte wan n-gun, tsi mawan ni hpe n-gun jaw ai lam, jak rung n-gun atsam ni a majaw. Kade nna ai aten hta, arung arai hpaji hte engineering masa ni lawan ai hku rawt jat wa ai hte maren, graphite sheets ni hpe sawk sagawn ai lam gaw matut nna grau sung wa ai majaw, structural design, bungli galaw ai lam hpe grau kaja hkra galaw ai lam, hte bungli galaw ai lam ni hta grai rawt jat wa ai.
1. Graphite laika hkyen lajang ai hpaji
Graphite sheets ni a matu hkyen lajang ai lam gaw shanhte a microstructure hte macroscopic atsam ni hpe hkrak hkra machyi shangun ai majaw, madung sawk sagawn ai shara langai mi naw rai nga ai. Htunghking hku nna, graphite sheets ni hpe compression molding (sh) high{1}}temtature hku nna galaw shapraw ai gaw, shingra tara flake graphite hpe n-gun jaw ai hku nna shapraw ai, raitim ndai ladat ni gaw n-gun n law ai hte maren sha byin shangun ai. Kade nna ai aten hta, sawk sagawn ai ni gaw, tsi mawan ni hpe n-gun jaw ai (CVD), polymer shawng nnan galai shai ai lam, hte hybrid ladat ni (ga shadawn, graphite composites ni lawm ai resin, magri, shing nrai, ceramic ni lawm ai, laika buk ni hpe hkyen lajang ai ladat amyu myu hpe gyin shalat wa sai.
Dai ni hta, CVD hpaji masa gaw, substrate ntsa kaw na tsaw ai- manu dan ai sumla hkrung ni hpe bang mai ai. Reaction gases ni a ratio hte temperature (methane, hydrogen, hte argon zawn re ai) hpe hkang ai hku nna, graphite layers hte mam n-gun hpe hkrak hkrak hkang lu ai. Dai hta n-ga, polymide (PI) zawn re ai polymer precursor ni hpe madung tawn nna pyrolytic graphitization mung grai myit lawm wa ai. Ndai ladat gaw, n-gun ja ai{4}} n-gun n-gun hpe jai lang ai (2800℃ntsa ) hpe jai lang nna, organic matter hpe graphite structure de carbonize galaw nna bai gram lajang ai. Dai kaw na pru wa ai graphite sheets ni gaw, n-gun ja ai hte grai kaja ai thermal conductivity hpe madun dan ai.
2. Magam bungli galaw ai lam hpe grau kaja hkra galaw ai lam hte galai shai ai lam sawk sagawn ai lam
graphite sheets ni hpe galaw ai lam hpe grau kaja hkra galaw ai lam gaw madung hku nna nbung n-gun, wan n-gun, jak rung n-gun, n-gun n-gun hpe ninghkap lu ai atsam ni hpe madung tawn ai. Thermal conductivity hte seng nna, sawk sagawn ai ni gaw, graphite sheets ni a lapran na n-gun hpe jat ya ai (ga shadawn, shingjawng ai-assisted orientation zawn re ai) gaw, shanhte a-plane thermal conductivity hpe grai shatsaw ya lu ai hpe mu lu ai. Grai n-gun ja ai graphite sheets nkau mi a thermal conductivity gaw W/(m·K) 1500 jan sai. Wan n-gun hte seng nna, nitrogen hte boron zawn re ai elements ni hte shingdaw nna (sh) carbon nanotubes hte graphene zawn re ai n-gun ja ai daw ni hpe shalawm ai gaw, shanhte a electron htaw sa ai lam hpe grau kaja hkra galaw ya lu ai.
Mechanical n-gun hte seng nna, graphite sheets ni gaw compressive n-gun kaba nga ai raitim, shanhte a tensile n-gun hte ngang kang ai lam gaw grai n law ai majaw, shanhte hpe load{0}}bearing structures ni hta jai lang ai lam hpe pat shingdang da ai. Ndai lam hpe hparan na matu, sawk sagawn ai ni gaw, carbon fiber- hpe n-gun jaw da ai graphite composites ni hte graphite/metal n-gun n-gun n-gun ni hpe sawk sagawn ai, dai gaw, n-gun ja ai- n-gun rawng ai second{4}}}phase arung arai ni hpe hpaw hpang nna, yawng hkra na jak rung atsam ni hpe jat ya ai. Dai hta n-ga, laksan jai lang ai lam ni a matu (chemical n-gun n-gun hpe makawp maga ai zawn re ai), ntsa kaw na shingnip shingna hpaji (nickel plating, SiC coating, shing nrai Al€O₃ coating zawn re ai) hpe jai lang nna, graphite sheets ni a n-gun n-gun n-gun hpe grau jat wa hkra galaw nga ai.
3. Magam bungli galaw ai lam hta rawt jat lam
Graphite sheets ni a laklai ai atsam ni gaw, shanhte hpe ginra amyu myu hta manu dan shangun ai. N-gun atsam hte seng ai lam hta, tsaw ai{1}}}hpung a n-gun rawng ai graphite sheets ni hpe lithium battery thermal hparan ai lam, semiconductor jak a n-gun hpe garan kachyan ai lam, jan a n-gun galai shai ai ladat ni hta grai lang ma ai. Ga shadawn, graphite sheets ni hpe wan jak mawdaw ni a shingnip ni hta heat dissipation substrates hku nna lang ai, battery bungli galaw ai aten hta katsi ai hpe shayawm ya lu ai hte battery prat hpe jat ya lu ai.
Electronics sector hta, graphite sheets ni gaw, shanhte a grai kaja ai wan n-gun ni a majaw, n-gun ja ai circuit board ni, electromagnetic shielding arung arai ni, hte n-gun kaba ai electronic jak ni a matu katsi ai hpe garan kachyan ai arung arai ni hta lang ai. Dai hta n-ga, graphene-graphite composite sheets ni hpe gyin shalat ai gaw, hpang na- n-gun kaba ai electronic jak ni a matu mai byin ai hparan ladat ni hpe jaw ya nga ai. Chemical hpaga lam hta, graphite sheets ni gaw, shanhte a tsaw ai- hpe n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-rawng ai a majaw, reactor linings, sealing materials, hte tsaw ai{8}} aten ladaw hpe filter ni a matu kaja dik ai lata la ai lam rai nga ai.
4. Htawm hpang na sawk sagawn lam matsun ni
graphite sheet sawk sagawn ai lam gaw, n-gun law law hpe lu la sai raitim, yak hkak ai lam ni naw nga ai, ga shadawn, grai sawng ai makau grup yin nkau mi hta, n-gun kaba ai- scale galaw shapraw ai lam hte n-gun n rawng ai zawn re ai lam ni zawn re ai lam ni naw nga ai. Htawm hpang na sawk sagawn ai lam ni hta lawu na lam ni hpe madung tawn mai ai:
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2. Multifunctional hpawng de ai hkrang: Hka lum ai hkrang masa hku nna nbung, wan n-gun, jak rung atsam ni hpe grau kaja hkra galaw na;
3. Grai sawng ai grup yin hpe galai shai lu ai atsam: Nbung katsi ai lam, n-gun ja ai radiation, shing nrai grai sawng ai n-gun n-gun npu na graphite sheets ni a galu kaba ai n-gun hpe sawk sagawn ai;
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Tsun ga nga yang, graphite sheet sawk sagawn ai lam gaw lawan ladan rawt jat wa nga ai. Hpaga hpaji masa, bungli galaw ai lam hpe hkang zing ai lam, hte bungli galaw ai lam ni hta matut nna awng dang wa ai hte, shi a lit gaw, tsaw ai{1}}end galaw shapraw ai lam hte zai ladat rawt jat wa ai hpaga lam ni hta grau grau ahkyak wa na re.
