Site na mmepe nke teknụzụ dị elu nke ọgbara ọhụrụ, nnyonye anya electromagnetic (EMI) na ndakọrịta elektrọnik (EMC) nsogbu nke ebili mmiri electromagnetic na-adịwanye njọ.Ọ bụghị naanị na ha na-ebute nnyonye anya na mebie ngwa na ngwa eletrọnịkị, na-emetụta ọrụ ha na-arụ, na-egbochikwa asọmpi mba ụwa n'ahịa na ngwa eletrọnịkị, na-emerụkwa gburugburu ebe obibi ma na-etinye ahụike mmadụ n'ihe egwu;na mgbakwunye, ntapu nke ebili mmiri electromagnetic ga-etinyekwa nchekwa ozi mba na nchekwa nke ihe nzuzo ndị agha.Karịsịa, ngwa agha pulse electromagnetic, nke bụ ngwa agha echiche ọhụrụ, emeela nnukwu ihe ịga nke ọma, nke nwere ike ịwakpo ngwa eletrọnịkị ozugbo, sistemu ike, wdg, na-akpata ọdịda nwa oge ma ọ bụ mmebi na-adịgide adịgide na sistemụ ozi, wdg.

Ya mere, inyocha ihe mkpuchi elektrọnịkị nke ọma iji gbochie nnyonye anya elektrọnik na nsogbu ndakọrịta elektrọnik nke ebili mmiri elektrọnik kpatara ga-eme ka nchekwa na ntụkwasị obi nke ngwaahịa na akụrụngwa elektrọnik, kwalite asọmpi mba ụwa, gbochie ngwa ọgụ elektrọn magnetik, yana hụ na nchekwa nke sistemu nkwukọrịta ozi na sistemụ netwọkụ. , usoro mgbasa ozi, ikpo okwu ngwa agha, wdg dị oke mkpa.

1. Ụkpụrụ nke nchekwa nchekwa electromagnetic (EMI)

Ihe nchekwa eletrik bụ iji ihe mkpuchi na-egbochi ma ọ bụ belata mgbasa nke ike electromagnetic n'etiti ebe mkpuchi na ụwa dị n'èzí.Ụkpụrụ nke nchekwa electromagnetic bụ iji ihe mkpuchi ahụ na-atụgharị uche, na-amịkọrọ ma na-eduzi usoro ike electromagnetic, nke nwere njikọ chiri anya na ebubo, iyi na polarization na-ebute n'elu ihe mkpuchi mkpuchi na n'ime ahụ mkpuchi.A na-ekewa nchekwa nchekwa n'ime nchekwa ọkụ eletrik (ọchichi elektrọnịkị na ihe mkpuchi ọkụ eletrik ọzọ), mkpuchi magnetik (oghere magnet dị ala na oghere magnetik dị elu) na mkpuchi ikuku electromagnetic (ihe mkpuchi ikuku elektrọnịk) dịka ụkpụrụ ya siri dị.N'ikwu okwu n'ozuzu, mkpuchi electromagnetic na-ezo aka na nke ikpeazụ, ya bụ, ikpuchi oghere eletrik na magnetik n'otu oge.

2. Electromagnetic ikpuchi ihe

Ka ọ dị ugbu a, a na-eji ihe mkpuchi mkpuchi elektrọnịkị ihe mejupụtara.Ihe ndị bụ isi ha na-eme bụ resin na-akpụ ihe nkiri, ihe na-eme ihe na-eme ihe, ihe na-esi ísì ụtọ, onye na-ejikọta ọnụ na ihe mgbakwunye ndị ọzọ.Ndozi ihe na-eme ihe bụ akụkụ dị mkpa na ya.Nke a na-ahụkarị bụ ọlaọcha (Ag) ntụ ntụ na ọla kọpa (Cu) ntụ ntụ., nickel (Ni) ntụ ntụ, ọla kọpa na-ekpuchi ọlaọcha, carbon nanotubes, graphene, nano ATO, wdg.

2.1Carbon nanotubes(CNTs)

Carbon nanotubes nwere akụkụ dị ukwuu, ọkụ eletrik dị mma, ihe ndọta, ma gosipụtala arụmọrụ dị mma na conductivity, absorbing na shielding.Ya mere, nnyocha na mmepe nke carbon nanotubes dị ka conductive fillers maka electromagnetic ikpuchi mkpuchi bụ ihe na-ewu ewu karị.Nke a na-etinye nnukwu ihe achọrọ na ịdị ọcha, nrụpụta na ọnụ ahịa carbon nanotubes.Carbon nanotubes nke Hongwu Nano mepụtara, gụnyere otu mgbidi na ọtụtụ mgbidi, nwere ịdị ọcha ruru 99%.Ma carbon nanotubes na-agbasasị na resin matrix yana ma ha nwere ezigbo mmekọrịta na resin matrix na-aghọ ihe na-emetụta kpọmkwem ọrụ nchekwa.Hongwu Nano na-enyekwa agbasa carbon nanotube dispersion ngwọta.

2.2 Flake ọlaọcha ntụ ntụ nwere obere njupụta pụtara ìhè

Mkpuchi conductive nke izizi ebipụtara bụ patent nke United States wepụtara na 1948 nke mere ọlaọcha na resin epoxy ka ọ bụrụ ihe nrapado.The electromagnetic shielding agba kwadebere na bọl milled flake silver powders mepụtara Hongwu Nano nwere àgwà nke ala nguzogide, ezi conductivity, elu ọta arụmọrụ, ike gburugburu ebe obibi ndidi, na adaba ewu.A na-eji ha eme ihe n'ọtụtụ ebe na nkwukọrịta, ngwa elektrọn, ahụike, ikuku ikuku, akụrụngwa nuklia na mpaghara ndị ọzọ.Agba mkpuchi dịkwa mma maka mkpuchi elu nke ABS, PC, ABS-PCPS na plastik injinịa ndị ọzọ.Ngosipụta arụmọrụ gụnyere nguzogide iyi, elu na obere okpomọkụ na-eguzogide, iru mmiri na okpomọkụ, adhesion, eletriki resistivity, electromagnetic ndakọrịta, wdg nwere ike iru ọkọlọtọ.

2.3 ọla kọpa ntụ ntụ na nickel ntụ ntụ

Ọla kọpa ntụ ntụ conductive agba nwere ọnụ ala na ọ dị mfe agba, nwekwara ezigbo ihe nchebe electromagnetic, ya mere a na-eji ya eme ihe.Ọ dabara adaba maka nnyonye anya mgbochi electromagnetic nke ngwaahịa elektrọnik na plastik injinia dị ka shei, n'ihi na agba ntụ ntụ ọla kọpa nwere ike ịfesa ma ọ bụ kpochaa ngwa ngwa.A na-eme ka mbara plastik dị iche iche dị iche iche na-eme ka ọ bụrụ oyi akwa ikuku na-echebe electromagnetic, nke mere na plastik ahụ nwere ike nweta nzube nke ikpuchi ebili mmiri electromagnetic.Ụdị ọdịdị na ọnụ ọgụgụ nke ntụ ntụ ọla kọpa nwere mmetụta dị ukwuu na conductivity nke mkpuchi.Uzuzu ọla kọpa nwere okirikiri, dendritic, na ụdị flake.Ụdị flake ahụ nwere mpaghara kọntaktị ka ukwuu karịa ọdịdị okirikiri ma na-egosi ihe omume dị mma.Tụkwasị na nke ahụ, a na-ekpuchi ntụ ntụ ọla kọpa (ọlaọcha na-ekpuchi ntụ ntụ) na ntụ ntụ ọlaọcha na-adịghị arụ ọrụ, nke na-adịghị mfe oxidize, na ọdịnaya nke ọlaọcha bụ n'ozuzu 5-30%.A na-eji mkpuchi mkpuchi ntụ ntụ ntụ ntụ mee ihe iji dozie mkpuchi electromagnetic nke ABS, PPO, PS na plastik injinịa ndị ọzọ na osisi na ikuku eletrik, nwere ọtụtụ ngwa na uru nkwalite.

Tụkwasị na nke ahụ, ihe nleba anya nke nano nickel ntụ ntụ na mkpuchi mkpuchi electromagnetic jikọtara ya na nano na micron nickel ntụ ntụ na-egosi na mgbakwunye nke nano Ni particle nwere ike ibelata irè ihe nchebe electromagnetic, ma ọ nwere ike ịbawanye nkwụsị nke absorption.A na-ebelata tangent magnetik, yana mmebi nke gburugburu ebe obibi, akụrụngwa na ahụike mmadụ nke ebili mmiri electromagnetic kpatara.

2.4 Nano Tin Antimony Oxide (ATO)

Nano ATO ntụ ntụ, dị ka onye na-emepụta ihe pụrụ iche, nwere ma nnukwu nghọta na conductivity, na ọtụtụ ngwa dị iche iche na mpaghara nke ihe mkpuchi ihe ngosi, ihe mkpuchi antistatic na-eduzi, na mkpuchi mkpuchi mkpuchi ọkụ.N'ime ihe mkpuchi ihe ngosi maka ngwaọrụ optoelectronic, nano ATO ihe nwere mgbochi static, mgbochi glare na mgbochi radieshon, na nke mbụ e ji mee ihe dị ka ihe ngosi ihe mkpuchi mkpuchi electromagnetic.Ihe mkpuchi ATO nano nwere nghọta dị mma na-acha ọkụ, ezigbo ọkụ eletrik, ike na-arụ ọrụ na nkwụsi ike, na ngwa ha iji gosipụta ngwaọrụ bụ otu n'ime ngwa mmepụta ihe kachasị mkpa nke ihe ATO ugbu a.Ngwa electrochromic (dị ka ngosipụta ma ọ bụ windo smart) bụ akụkụ dị mkpa nke ngwa nano-ATO na mpaghara ngosi.

2.5 Graphene

Dị ka ụdị carbon ọhụrụ, graphene yikarịrị ka ọ ga-abụ ụdị ọhụrụ nke nchekwa elektrọnịk dị irè ma ọ bụ ihe na-anabata ngwa ndakwa nri karịa carbon nanotubes.Isi ihe kpatara ya gụnyere akụkụ ndị a:

①Graphene bụ ihe nkiri dị larịị hexagonal nke mejupụtara carbon carbon, ihe nwere akụkụ abụọ nwere ọkpụrụkpụ nke naanị otu carbon carbon;

②Graphene bụ nanomaterial kacha dị gịrịgịrị na nke siri ike n'ụwa;

③ The thermal conductivity dị elu karịa nke carbon nanotubes na diamonds, na-eru banyere 5 300W / m • K;

④ Graphene bụ ihe nwere obere resistivity na ụwa, naanị 10-6Ω • cm;

⑤Mkpụrụ elektrọn nke graphene na okpomọkụ dị elu karịa nke carbon nanotubes ma ọ bụ kristal silicon, gafere 15 000 cm2 / V•s.E jiri ya tụnyere ihe ọdịnala, graphene nwere ike mebie site na njedebe mbụ wee bụrụ onye na-amịpụta ebili mmiri ọhụrụ dị irè iji mezuo ihe achọrọ nke nnabata.Ihe ndị na-efegharị efegharị nwere ihe achọrọ nke "mkpa, ọkụ, obosara na ike".

Ọganihu nke nchekwa elektrọnịk na ịrụ ọrụ ihe na-etinye ihe na-adabere na ọdịnaya nke onye na-etinye ihe na-amị amị, arụmọrụ nke onye na-anabata ya na ezigbo impedance dakọtara nke mkpụrụ na-amị mkpụrụ.Graphene abụghị naanị nwere usoro anụ ahụ pụrụ iche yana ọmarịcha akụrụngwa na akụrụngwa elektrọnik, mana ọ nwekwara ezigbo nnabata ngwa ndakwa nri.Mgbe ejikọtara ya na magnetik nanoparticles, enwere ike nweta ụdị ọhụrụ nke ihe na-adọrọ adọrọ, nke nwere ma magnetik na ọkụ eletrik.Na ọ nwere ezigbo ngwa atụmanya na ubi nke electromagnetic shielding na ngwa ndakwa nri absorption.

N'ihi na n'elu nkịtị electromagnetic shielding ihe nano powders, ma bụ niile dị site Hongwu Nano na kwụsiri ike na ezi mma.