Isi ihe maka nrụpụta PCB

Ihe ndị bụ isi maka nrụpụta PCB

N'oge a, e nwere ọtụtụ ndị na-emepụta PCB, ọnụahịa adịghị elu ma ọ bụ dị ala, àgwà na nsogbu ndị ọzọ anyị amaghị ihe ọ bụla, otu esi ahọrọ.PCB nrụpụtaihe?Ihe eji eme ihe, n'ozuzu efere mkpuchi ọla kọpa, ihe nkiri kpọrọ nkụ, ink, wdg, ọtụtụ ihe ndị a maka mmeghe nkenke.

1. Ihe mkpuchi ọla kọpa

A na-akpọ efere mkpuchi ọla kọpa nwere akụkụ abụọ.A na-ekpebi ma ọ bụrụ na enwere ike kpuchie foil ọla kọpa na mkpụrụ osisi, na ike ịwepụ efere ọla kọpa na-adabere na arụmọrụ nke ihe nkedo ahụ.Ọkpụrụkpụ efere ọla kọpa a na-ejikarị 1.0 mm, 1.5 mm na 2.0 mm atọ.

(1) ụdị efere ọla kọpa.

Enwere ọtụtụ ụzọ nhazi ọkwa maka efere ọla kọpa.N'ozuzu dị ka efere mkwado ihe dị iche iche, nwere ike kewara n'ime: akwụkwọ isi, iko eriri ákwà isi, mejupụtara isi (CEM usoro), multi-layer efere isi na pụrụ iche ihe isi (seramiiki, metal isi isi, wdg) ise. edemede.Dị ka ihe dị iche iche resin adhesives na-eji osisi, akwụkwọ nkịtị nke CCL bụ: phenolic resin (XPC, XXXPC, FR-L, FR-2, wdg), epoxy resin (FE-3), polyester resin na ụdị ndị ọzọ. .Isi eriri iko iko CCL nwere resin epoxy (FR-4, FR-5), ọ bụ ugbu a ụdị isi eriri iko kachasị eji.Ndị ọzọ ọpụrụiche resin (na iko eriri ákwà, naịlọn, na-abụghị kpara, wdg na-amụba ihe) : abụọ maleic imide gbanwetụrụ triazine resin (BT), polyimide (PI) resin, diphenylene ezigbo resin (PPO), maleic acid ọrụ imine - styrene resin (MS), poly (oxygen acid ester resin, polyene agbakwunyere na resin, wdg. Dị ka ọkụ retardant Njirimara nke CCL, ọ nwere ike ikewa n'ime ire ere retardant na-abụghị ire ọkụ retardant efere. N'oge na-adịbeghị anya otu afọ abụọ. na-eleba anya na nchedo gburugburu ebe obibi, a na-emepụta ụdị CCL ọhụrụ na-enweghị ihe ndị ọzara na ọkụ ọkụ CCL, nke a pụrụ ịkpọ "green flame retardant CCL". , site na nhazi ọkwa nke CCL, enwere ike kewaa ya n'ime arụmọrụ CCL n'ozuzu, obere dielectric na-adịgide adịgide CCL, nnukwu okpomọkụ na-eguzogide CCL, obere mgbasawanye ọkụ CCL (nke a na-ejikarị maka nkwakọ ngwaahịa) na ụdị ndị ọzọ.

(2)ihe ngosi arụmọrụ nke efere ọla kọpa.

Igwe mgbanwe okpomọkụ.Mgbe okpomọkụ na-ebili na mpaghara ụfọdụ, mkpụrụ ahụ ga-agbanwe site na "ọnọdụ iko" gaa na "steeti rubber", a na-akpọ okpomọkụ a iko mgbanwe okpomọkụ (TG) nke efere.Ya bụ, TG bụ okpomọkụ kachasị elu (%) nke mkpụrụ osisi na-anọgide na-esi ike.Nke ahụ bụ, ndị nkịtị mkpụrụ ihe na elu okpomọkụ, ọ bụghị nanị na-emepụta softening, deformation, agbaze na ndị ọzọ phenomena, ma na-egosi a nkọ ọdịda n'ibu na eletriki e ji mara.

N'ozuzu, na TG nke PCB mbadamba bụ n'elu 130 ℃, na TG nke elu mbadamba bụ n'elu 170 ℃, na TG nke ọkara mbadamba bụ n'elu 150 ℃.Na-abụkarị uru TG nke bọọdụ e biri ebi 170, nke a na-akpọ bọọdụ e biri ebi TG dị elu.A na-eme ka TG nke mkpụrụ osisi dịkwuo mma, a ga-eme ka ọ dịkwuo mma ma na-emeziwanye okpomọkụ na-eguzogide, mmiri na-eguzogide mmiri, nguzogide kemịkalụ, nkwụsi ike na njirimara ndị ọzọ nke osisi a na-ebipụta.Ọnụ ahịa TG dị elu, ka mma na-eguzogide okpomọkụ nke efere ahụ, karịsịa na usoro enweghị ndu,Ọnụahịa kasị elu nke TG PCBa na-ejikarị eme ihe.

2. Dielectric mgbe niile.

Site na mmepe ngwa ngwa nke teknụzụ eletrọnịkị, a na-emeziwanye ngwa ngwa nhazi ozi na nnyefe ozi.Iji gbasaa ọwa nzikọrịta ozi, a na-ebugharị ugboro ole eji eme ihe na mpaghara elu ugboro ugboro, nke na-achọ ka ihe ndị na-emepụta ihe na-enwe obere dielectric mgbe niile na TG dielectric dị ala.Naanị site n'ibelata E nwere ike nweta ọsọ nfefe dị elu, ma naanị site n'ibelata TG nwere ike belata ọnwụ nnyefe mgbaàmà.

3. ọnụọgụ mgbasawanye thermal.

Na mmepe nke nkenke na multilayer nke e biri ebi osisi na BGA, CSP na ndị ọzọ na teknụzụ, PCB ụlọ ọrụ etinyela elu chọrọ maka nkwụsi ike nke ọla kọpa clad efere size.Ọ bụ ezie na nkwụsi ike akụkụ nke efere ọla kọpa na-ejikọta ya na usoro mmepụta ihe, ọ na-adabere na ngwa ngwa atọ nke efere ọla kọpa: resin, ihe nkwado na foil ọla kọpa.Usoro a na-emebu bụ ịgbanwe resin, dị ka resin epoxy gbanwetụrụ;Belata oke ọdịnaya resin, mana nke a ga-ebelata mkpuchi eletrik na akụrụngwa kemịkalụ nke mkpụrụ;Ọla kọpa enweghị mmetụta dị nta na nkwụsi ike n'akụkụ nke efere ọla kọpa. 

4.UV igbochi arụmọrụ.

N'ime usoro nke imepụta bọọdụ sekit, yana mgbasawanye nke solder photosensitive, iji zere ndò abụọ kpatara mmetụta mmekọrịta n'akụkụ abụọ ahụ, ihe ndị mejupụtara niile ga-enwerịrị ọrụ nke ichebe UV.Enwere ọtụtụ ụzọ iji gbochie nnyefe nke ọkụ ULTRAVIOLET.N'ozuzu, otu ma ọ bụ abụọ ụdị nke iko eriri ákwà na epoxy resin nwere ike gbanwee, dị ka iji epoxy resin na UV-block na akpaka ngwa nchọpụta ọrụ.

Huihe Circuits bụ ụlọ ọrụ PCB ọkachamara, a na-anwale usoro ọ bụla nke ọma.Site na bọọdụ sekit iji mee ka usoro nke mbụ na nyocha ogo ikpeazụ, oyi akwa n'elu oyi akwa kwesịrị ịlele nke ọma.Nhọrọ nke bọọdụ, ink eji eme ihe, akụrụngwa eji eme ihe, na ike nke ndị ọrụ nwere ike imetụta ogo ikpeazụ nke bọọdụ ahụ.Site na mmalite ruo nyocha nyocha, anyị nwere nlekọta ọkachamara iji hụ na emechara usoro ọ bụla nke ọma.Sonyere anyị!