N'ime afọ ndị na-adịbeghị anya, okpomọkụ nke ngwaahịa roba enwetawo nlebara anya dị ukwuu.A na-eji ngwaahịa rọba na-ekpo ọkụ na-ekpo ọkụ na mpaghara ikuku, ụgbọ elu, ngwa eletrọnịkị, na ngwa eletrik iji rụọ ọrụ na njikwa okpomọkụ, mkpuchi na ịmịnye ujo.Ọganihu nke conductivity thermal dị oke mkpa maka ngwaahịa rọba na-eduzi thermally.Ihe mejupụtara rọba nke a kwadebere site na onye na-emepụta ihe na-ekpo ọkụ nwere ike ịnyefe ọkụ nke ọma, nke dị oke mkpa maka densification na miniaturization nke ngwaahịa eletrọnịkị, yana nkwalite nke ntụkwasị obi ha na ịgbatị ndụ ọrụ ha.

Ka ọ dị ugbu a, ihe ndị a na-eji roba eme ihe na taya kwesịrị inwe àgwà nke obere okpomọkụ na-eme ka ọ dịkwuo elu.N'otu aka ahụ, na taya taya vulcanization, arụ ọrụ nnyefe ọkụ nke rọba na-eme ka ọ dịkwuo mma, a na-eme ka ọnụ ọgụgụ nke vulcanization dịkwuo elu, na ike na-ebelata ike;Okpomọkụ a na-eme n'oge ịnya ụgbọ ala na-ebelata okpomọkụ nke anụ ahụ ma na-ebelata mmebi arụmọrụ taya nke oke okpomọkụ kpatara.Thermal conductivity nke thermally conductive rọba bụ tumadi kpebisiri ike site na roba matrix na thermally conductive filler.The thermal conductivity nke ma ụmụ irighiri ma ọ bụ fibrous thermal conductive filler dị nnọọ mma karịa nke roba matrix.

Ihe ndị a na-ejikarị eme ihe na-ekpo ọkụ ọkụ bụ ihe ndị a:

1. Cubic Beta phase nano silicon carbide (SiC)

Nano-ọnụ ọgụgụ silicon carbide ntụ ntụ ụdị kọntaktị okpomọkụ conduction chains, na mfe alaka na polymers, na-akpụ Si-O-Si yinye okpomọkụ conduction ọkpụkpụ dị ka isi okpomọkụ conduction ụzọ, nke ukwuu mma thermal conductivity nke ihe mejupụtara ihe na-enweghị ibelata. ihe mejupụtara ihe eji arụ ọrụ.

Igwe ọkụ ọkụ nke silicon carbide epoxy composite material na-abawanye site na mmụba nke silicon carbide, na nano-silicon carbide nwere ike inye ihe mejupụtara ihe mejupụtara ahụ ezigbo ikuku ọkụ mgbe ego dị ala.Ike mgbanwe na ike mmetụta nke silicon carbide epoxy composite ihe na-ebu ụzọ wee belata site na mmụba nke silicon carbide.Mgbanwe elu nke silicon carbide nwere ike imeziwanye conductivity thermal na akụrụngwa nke ihe mejupụtara.

Silicon carbide nwere akụrụngwa kemịkalụ kwụsiri ike, conductivity thermal conductivity dị mma karịa ihe ndị ọzọ na-ahụ maka semiconductor, na conductivity ya dị ukwuu karịa nke ígwè na ụlọ okpomọkụ.Ndị na-eme nchọpụta sitere na Mahadum teknụzụ kemịkalụ nke Beijing mere nyocha banyere nrụpụta okpomọkụ nke alumina na silicon carbide na-emesi silicone roba ike.Nsonaazụ na-egosi na njikwa okpomọkụ nke silicone roba na-abawanye ka ọnụọgụ silicon carbide na-abawanye;mgbe ọnụ ọgụgụ nke silicon carbide bụ otu, thermal conductivity nke obere urughuru size silicon carbide mesiri silicone roba bụ ukwuu karịa nke nnukwu urughuru size silicon carbide mesiri silicone roba;Nrụpụta ọkụ nke rọba silicon nke ejiri silicon carbide mee ka ọ dị mma karịa nke alumina rọba silicon siri ike.Mgbe oke nha nke alumina / silicon carbide bụ 8/2 na ngụkọta ego bụ akụkụ 600, conductivity thermal conductivity nke silicon roba kacha mma.

2. Aluminom nitride (ALN)

Aluminom nitride bụ kristal atomic ma bụrụ nke diamond nitride.Ọ nwere ike ịdị na-adịgide adịgide na oke okpomọkụ nke 2200 ℃.Ọ nwere ezigbo conductivity thermal na ọnụ ọgụgụ mgbasawanye ọkụ dị ala, na-eme ka ọ bụrụ ezigbo ihe ịma jijiji ọkụ.Thermal conductivity nke aluminom nitride bụ 320 W · (m·K) -1, nke dị nso na thermal conductivity nke boron oxide na silicon carbide, na bụ ihe karịrị 5 ugboro ibu karịa nke alumina.Ndị ọrụ nyocha si Mahadum Sayensị na Nkà na ụzụ Qingdao amụwo ihe nrụpụta ọkụ nke aluminom nitride gbanyere EPDM rọba rọba.Nsonaazụ na-egosi na: ka ọnụọgụ nke nitride aluminom na-abawanye, okpomọkụ nke ihe mejupụtara ihe na-abawanye;conductivity thermal conductivity nke ihe mejupụtara na-enweghị aluminum nitride bụ 0.26 W · (m · K) -1, mgbe ọnụ ọgụgụ nke aluminum nitride na-abawanye na Na 80 akụkụ, thermal conductivity nke ihe mejupụtara ihe ruru 0.442 W · (m·K) -1, mmụba nke 70%.

3. Nano alumina (Al2O3)

Alumina bụ ụdị multifunctional inorganic filler, nke nwere nnukwu okpomọkụ conductivity, dielectric mgbe niile na ezigbo eyi iguzogide.A na-ejikarị ya eme ihe na ihe mejupụtara rọba.

Ndị na-eme nchọpụta sitere na Mahadum teknụzụ kemịkalụ nke Beijing nwalere nrụpụta okpomọkụ nke nano-alumina/carbon nanotube/ composites roba eke.Nsonaazụ na-egosi na ijikọta nano-alumina na carbon nanotubes na-enwe mmetụta synergistic na-eme ka ọkụ ọkụ nke ihe mejupụtara;mgbe ọnụ ọgụgụ nke carbon nanotubes na-adịgide adịgide, okpomọkụ conductivity nke ihe mejupụtara na-abawanye linearly na-abawanye nke nano-alumina;mgbe 100 Mgbe ị na-eji nano-alumina dị ka ihe na-eme ka ọkụ na-emepụta ihe, okpomọkụ nke ihe mejupụtara ihe na-abawanye site na 120%.Mgbe a na-eji akụkụ 5 nke carbon nanotubes mee ihe dị ka onye na-eme ihe na-ekpo ọkụ, okpomọkụ nke ihe mejupụtara ya na-abawanye site na 23%.Mgbe a na-eji akụkụ 100 nke alumina na akụkụ 5 mee ihe Mgbe a na-eji carbon nanotubes mee ihe dị ka ihe na-emepụta ihe na-ekpo ọkụ, okpomọkụ nke ihe mgbagwoju anya na-abawanye site na 155%.Nnwale ahụ na-adọtakwa nkwubi okwu abụọ ndị a: Nke mbụ, mgbe ọnụọgụ carbon nanotubes na-adịgide adịgide, ka ọnụ ọgụgụ nke nano-alumina na-abawanye, usoro ntanetị nke na-emepụta ihe na-emepụta site na ihe ndị na-emepụta ihe na roba na-eji nwayọọ nwayọọ na-abawanye, na ihe nkwụsị nke ihe ngwakọta na-abawanye nke nta nke nta.Mgbe 100 akụkụ nke nano-alumina na 3 akụkụ nke carbon nanotubes na-eji ọnụ, ike mkpakọ okpomọkụ ọgbọ nke mejupụtara ihe bụ naanị 12 ℃, na ike n'ibu Njirimara ndị magburu onwe;nke abụọ, mgbe ọnụ ọgụgụ nke carbon nanotubes na-edozi, dị ka ọnụ ọgụgụ nke nano-alumina na-abawanye, ike siri ike na ike akwa nke ihe ndị mejupụtara ihe na-abawanye, ebe ike ike na elongation na nkwụsịtụ na-ebelata.

4. Carbon Nanotube

Carbon nanotubes nwere ezigbo anụ ahụ, conductivity thermal na eletrọnịkị, ma bụrụkwa ihe na-eme ka ike sie ike.Ihe mejupụtara rọba na-eme ka ha nwee ume enwetawo nlebara anya zuru ebe niile.A na-emepụta carbon nanotubes site na curling n'ígwé nke graphite.Ha bụ ụdị graphite ọhụrụ nwere usoro cylindrical nke nwere dayameta nke iri nanometers (10-30nm, 30-60nm, 60-100nm).Thermal conductivity nke carbon nanotubes bụ 3000 W · (m·K) -1, nke bụ 5 ugboro thermal conductivity nke ọla kọpa.Carbon nanotubes nwere ike imeziwanye conductivity thermal, conductivity eletriki na akụrụngwa anụ ahụ nke rọba, na nkwado ha na conductivity thermal dị mma karịa ihe eji eme ọdịnala dị ka carbon ojii, eriri carbon na eriri iko.Ndị na-eme nchọpụta sitere na Mahadum Sayensị na Nkà na Ụzụ nke Qingdao mere nyocha gbasara ikuku ikuku nke carbon nanotubes/EPDM ihe mejupụtara.Nsonaazụ na-egosi na: carbon nanotubes nwere ike melite conductivity thermal na anụ ahụ nke ihe mejupụtara;dị ka ọnụ ọgụgụ nke carbon nanotubes na-abawanye, okpomọkụ conductivity nke ihe ndị mejupụtara na-abawanye, na ike ike na elongation na nkwụsịtụ mbụ na-abawanye na mgbe ahụ ibelata , A na-amụba nrụgide nkwụsị na ike ịdọka;mgbe ọnụ ọgụgụ nke carbon nanotubes dị ntakịrị, nnukwu dayameta carbon nanotubes dị mfe ịmepụta ụdọ ọkụ na-ekpo ọkụ karịa obere carbon nanotubes, na ha na-ejikọta ya na matrix roba.