Mapulasitiki apamwamba opangira matenthedwe amawonetsa maluso odabwitsa mu ma inductors a thiransifoma, kutentha kwazinthu zamagetsi zamagetsi, zingwe zapadera, zoyika pakompyuta, kuyika kwamafuta ndi madera ena chifukwa cha ntchito yawo yabwino, mtengo wotsika komanso matenthedwe abwino kwambiri.Mapulasitiki apamwamba otenthetsera matenthedwe okhala ndi graphene monga zodzaza amatha kukwaniritsa zofunikira za kachulukidwe kwambiri komanso chitukuko chamsonkhano chophatikizana kwambiri pakuwongolera kutentha ndi mafakitale amagetsi.

Mapulasitiki ochiritsira ochiritsira amadzazidwa makamaka ndi zitsulo zotulutsa kutentha kwambiri kapena tinthu tating'onoting'ono tomwe timadzaza ndi zinthu zofananira za polima matrix.Kuchuluka kwa filler kukafika pamlingo wina, chodzazacho chimapanga unyolo wofanana ndi maukonde mu dongosolo, ndiye kuti, unyolo wa netiweki wa thermally conductive.Pamene mayendedwe a unyolo wa ma mesh otenthetserawa akufanana ndi momwe kutentha kumayendera, matenthedwe amatenthedwe a dongosololi amakhala bwino kwambiri.

Mapulasitiki apamwamba opangira matenthedwe okhala ndicarbon nanomaterial graphenemonga filler imatha kukwaniritsa zofunikira za kachulukidwe kwambiri komanso chitukuko chamsonkhano chophatikizana kwambiri pakuwongolera matenthedwe ndi mafakitale amagetsi.Mwachitsanzo, matenthedwe matenthedwe a polyamide 6 (PA6) koyera ndi 0.338 W / (m · K), akadzazidwa ndi 50% alumina, matenthedwe madutsidwe wa gulu ndi 1.57 nthawi ya PA6 koyera;powonjezera 25% ya kusinthidwa zinki okusayidi, matenthedwe madutsidwe wa gulu ndi apamwamba katatu kuposa PA6 koyera.Pamene 20% graphene nanosheet anawonjezera, ndi matenthedwe madutsidwe wa gulu kufika 4.11 W/(m•K), amene chiwonjezeke ndi nthawi 15 kuposa koyera PA6, amene amasonyeza kuthekera kwakukulu kwa graphene m'munda wa kasamalidwe matenthedwe.

1. Kukonzekera ndi matenthedwe matenthedwe a graphene/polymer composites

The matenthedwe madutsidwe wa graphene/polymer nsanganizo ndi wosalekanitsidwa ndi zinthu processing ndondomeko kukonzekera.Njira zosiyanasiyana zokonzekera zimapanga kusiyana pakati pa kubalalitsidwa, mawonekedwe apakati komanso mawonekedwe a malo a zodzaza mu matrix, ndipo izi zimatsimikizira kuuma, mphamvu, kulimba ndi ductility ya gulu.Malinga ndi kafukufuku wamakono, kwa ma graphene/polymer composites, kuchuluka kwa kubalalitsidwa kwa graphene ndi kuchuluka kwa kupukuta kwa mapepala a graphene kumatha kuwongoleredwa ndikuwongolera kukameta ubweya, kutentha ndi zosungunulira za polar.

2. Zinthu zomwe zimakhudza magwiridwe antchito a graphene zidadzaza mapulasitiki apamwamba opangira matenthedwe

2.1 Kuchulukitsa kwa Graphene

Mu mkulu matenthedwe madutsidwe pulasitiki wodzazidwa ndi graphene, monga kuchuluka kwa graphene ukuwonjezeka, matenthedwe conductive maukonde unyolo pang'onopang'ono anapanga dongosolo, amene kwambiri bwino matenthedwe madutsidwe wa zinthu gulu.

Pophunzira matenthedwe matenthedwe a epoxy resin (EP)-based graphene composites, apeza kuti kudzaza kwa graphene (pafupifupi zigawo 4) kumatha kukulitsa matenthedwe a EP pafupifupi nthawi 30 mpaka 6.44.W/(m•K), pomwe zodzaza zachikhalidwe zamatenthedwe zimafunikira 70% (kagawo kakang'ono) ka chodzaza kuti akwaniritse izi.

2.2 Chiwerengero cha zigawo za Graphene
Kwa multilayers graphene, kafukufuku pa 1-10 zigawo za graphene anapeza kuti pamene chiwerengero cha graphene zigawo anawonjezeka kuchokera 2 mpaka 4, matenthedwe conductivity anatsika kuchokera 2 800 W/(m• K) mpaka 1300 W/(m•K) ).Izi zikutanthauza kuti matenthedwe madutsidwe a graphene amakonda kuchepa ndi kuchuluka kwa zigawo.

Izi ndichifukwa choti ma multilayer graphene amaphatikizana ndi nthawi, zomwe zipangitsa kuti matenthedwe azitha kuchepa.Pa nthawi yomweyo, zolakwika mu graphene ndi matenda m'mphepete adzachepetsa matenthedwe madutsidwe wa graphene.

2.3 Mitundu ya gawo lapansi
Zigawo zazikulu za mapulasitiki apamwamba opangira matenthedwe amaphatikiza zida za matrix ndi zodzaza.Graphene ndi yabwino kusankha fillers chifukwa cha matenthedwe conductivity.Different masanjidwewo nyimbo zimakhudza matenthedwe madutsidwe.Polyamide (PA) ili ndi zida zabwino zamakina, kukana kutentha, kukana kuvala, kutsika kwamphamvu kwamphamvu, kuchepa kwamoto kwina, kukonza kosavuta, koyenera kudzaza kusinthidwa, kukonza magwiridwe antchito ndikukulitsa gawo logwiritsira ntchito.

Kafukufukuyu anapeza kuti pamene voliyumu gawo la graphene ndi 5%, matenthedwe madutsidwe wa gulu ndi 4 nthawi apamwamba kuposa wa polima wamba, ndipo pamene voliyumu kachigawo graphene ndi kuchuluka kwa 40%, matenthedwe madutsidwe wa gulu. kuchuluka kwa 20 nthawi..

2.4 Kukonzekera ndi kugawa kwa graphene mu matrix
Zapezeka kuti mayendedwe ofukula stacking wa graphene akhoza kusintha matenthedwe madutsidwe.
Kuonjezera apo, kugawidwa kwa chodzaza mu matrix kumakhudzanso kutentha kwa matenthedwe a composite.Pamene filler ndi uniformly omwazikana mu masanjidwewo ndi kupanga thermally conductive maukonde unyolo, matenthedwe madutsidwe wa gulu ndi bwino kwambiri.

2.5 Interface kukana ndi mawonekedwe lumikiza mphamvu
Nthawi zambiri, kuyanjana kwapakati pakati pa tinthu tating'onoting'ono ta organic filler ndi organic resin masanjidwewo ndikosauka, ndipo tinthu tating'onoting'ono timalumikizana mosavuta mu matrix, zomwe zimapangitsa kuti zikhale zovuta kupanga kubalalitsidwa kofanana.Kuphatikiza apo, kusiyana kwapang'onopang'ono pakati pa particles inorganic filler particles ndi masanjidwewo kumapangitsa kuti pakhale zovuta kuti tinthu tating'onoting'ono tinyowetsedwe ndi utomoni wa utomoni, zomwe zimapangitsa kuti pakhale ma voids pamawonekedwe apakati paziwirizi, potero kumawonjezera kukana kwapakati pamafuta. kuphatikizika kwa polymer.

3. Mapeto
Mapulasitiki apamwamba opangira matenthedwe odzaza ndi graphene amakhala ndi matenthedwe apamwamba komanso kukhazikika kwamafuta abwino, ndipo chiyembekezo chawo chachitukuko ndi chachikulu kwambiri.Kupatula matenthedwe matenthedwe, graphene ili ndi zinthu zina zabwino kwambiri, monga mphamvu yayikulu, mphamvu zamagetsi ndi kuwala, ndipo imagwiritsidwa ntchito kwambiri pazida zam'manja, zakuthambo, ndi mabatire atsopano amphamvu.

Hongwu Nano yakhala ikufufuza ndikupanga ma nanomatadium kuyambira 2002, ndipo kutengera luso lokhwima komanso ukadaulo wapamwamba, wokonda msika, Hongwu Nano imapereka ntchito zosiyanasiyana zamaluso kuti apatse ogwiritsa ntchito mayankho aukadaulo osiyanasiyana kuti agwiritse ntchito bwino.