Ka ọ dị ugbu a, e nwere ụdị ihe mkpuchi ọla kọpa dị iche iche nke a na-ejikarị eme ihe na mba m, njirimara ha dị ka ndị a: ụdị akwa ọla kọpa, ihe ọmụma banyere ihe mkpuchi ọla kọpa, na ụzọ nhazi ọkwa nke ọla kọpa.N'ozuzu, dị ka dị iche iche ume ihe nke osisi, ọ nwere ike kewara ise: akwụkwọ isi, iko eriri ákwà isi, mejupụtara isi (CEM usoro), laminated multi-layer osisi isi na pụrụ iche ihe isi (seramiiki, metal isi). isi, wdg).Ọ bụrụ na a na-ekewa ya dị ka nrapado resin a na-eji na bọọdụ ahụ, CCI na-emekarị akwụkwọ.Enwere: resin phenolic (XPC, XxxPC, FR-1, FR-2, wdg), resin epoxy (FE-3), resin polyester na ụdị ndị ọzọ.The nkịtị iko eriri ákwà isi CCL nwere epoxy resin (FR-4, FR-5), nke bụ ugbu a kasị n'ọtụtụ ebe nke iko eriri ákwà isi.Tụkwasị na nke ahụ, e nwere resins ndị ọzọ pụrụ iche (akwa akwa iko, eriri polyamide, ákwà na-adịghị akwa ákwà, wdg dị ka ihe ndị ọzọ): bismaleimide modified triazine resin (BT), polyimide resin (PI) , Diphenylene ether resin (PPO), maleic. anhydride imine-styrene resin (MS), polycyanate resin, polyolefin resin, wdg Dị ka ọkụ retardant arụmọrụ nke CCL, ọ nwere ike kewaa abụọ ụdị mbadamba: ire ọkụ retardant (UL94-VO, UL94-V1) na ndị na-abụghị. ọkụ retardant (UL94-HB) .N'ime otu afọ ma ọ bụ abụọ gara aga, na-ekwusi ike na nchebe gburugburu ebe obibi, ụdị CCL ọhụrụ nke na-enweghị bromine na-ekewapụ na CCL ọkụ na-ere ọkụ, nke a pụrụ ịkpọ "ọkụ na-acha akwụkwọ ndụ akwụkwọ ndụ. CCL na-azụ azụ.Site na mmepe ngwa ngwa nke teknụzụ ngwaahịa eletrọnịkị, enwere oke arụmọrụ chọrọ maka cCL.Ya mere, site na nhazi ọkwa nke CCL, a na-ekewa ya na arụmọrụ CCL n'ozuzu, obere dielectric CCL na-adịgide adịgide, CCL dị elu na-eguzogide okpomọkụ (n'ozuzu L nke osisi dị n'elu 150 ° C), na CCL dị ala mgbasawanye ọkụ (nke a na-ejikarị eme ihe). nkwakọ ngwaahịa)) na ụdị ndị ọzọ.Site na mmepe na ọganihu na-aga n'ihu nke teknụzụ eletrọnịkị, a na-etinye ihe ọhụrụ chọrọ mgbe niile maka ihe eji ebi ebi ebi, si otú ahụ na-akwalite mmepe na-aga n'ihu nke ụkpụrụ laminate ọla kọpa.Ka ọ dị ugbu a, ụkpụrụ bụ isi nke ihe ndị substrate bụ ndị a
① Ọkọlọtọ mba: Ụkpụrụ mba nke obodo m metụtara ihe eji eme ihe gụnyere GB/T4721-47221992 na GB4723-4725-1992.Ọkọlọtọ maka ọla kọpa clad laminates na Taiwan, China bụ ọkọlọtọ CNS, nke emere dabere na ọkọlọtọ JIS Japan wee guzobe ya na 1983. ntọhapụ.
② Ụkpụrụ mba ụwa: ọkọlọtọ JIS Japan, ASTM American, NEMA, MIL, IPC, ANSI, ọkọlọtọ UL, ọkọlọtọ British Bs, German DIN, ọkọlọtọ VDE, French NFC, ọkọlọtọ UTE, ọkọlọtọ Canada CSA, ọkọlọtọ Australia AS, ọkọlọtọ FOCT nke Soviet Union mbụ, ọkọlọtọ IEC mba ụwa, wdg;suppliers nke PCB imewe ihe, nke a na-ejikarị na-ejikarị bụ: ShengyiKingboardInternational, wdg.
PCB sekit osisi ihe iwebata: dị ka ika larịị larịị site na ala ruo elu, ọ na-ekewa dị ka ndị a: 94HB-94VO-CEM-1-CEM-3-FR-4
The zuru ezu parameters na ojiji bụ ndị a:
94HB
: kaadiboodu nkịtị, ọ bụghị ọkụ (ihe kacha ala ọkwa, ịnwụ ọkpọ, enweghị ike iji ya dị ka bọọdụ ike)
94V0: kaadiboodu ire ọkụ (ịkụ ọkpọ)
22F
: bọọdụ fiber ọkara nwere akụkụ nwere otu akụkụ (ịkụ ọkpọ)
CEM-1
: bọọdụ fiberglass nwere otu akụkụ (a ga-eji kọmpụta gbawaa ya, ọ bụghị ọkpọ)
CEM-3
: Ogwe osisi fiberglass nke nwere akụkụ abụọ (ma e wezụga maka kaadiboodu nwere akụkụ abụọ, nke bụ ihe kachasị dị ala maka akụkụ abụọ. Mpempe akụkụ abụọ dị mfe nwere ike iji ihe a, nke bụ 5 ~ 10 yuan / square mita dị ọnụ ala karịa. FR-4)
FR-4:
bọọdụ fiberglass nwere akụkụ abụọ
1. Enwere ike kewaa nhazi ihe ndị na-ere ọkụ ọkụ na ụdị anọ: 94VO-V-1-V-2-94HB
2. Prepreg: 1080=0.0712mm, 2116=0.1143mm, 7628=0.1778mm
3. FR4 CEM-3 niile na-anọchi anya bọọdụ, fr4 bụ iko eriri osisi, na cem3 bụ ihe mejupụtara mkpụrụ.
4. Halogen-free na-ezo aka na ihe ndị na-enweghị halogens (ihe ndị dị ka fluorine, bromine, iodine, wdg), n'ihi na bromine ga-emepụta gas na-egbu egbu mgbe ọkụ, nke a chọrọ site na nchebe gburugburu ebe obibi.
5. Tg bụ iko mgbanwe okpomọkụ, nke bụ ebe agbaze.
6. Igwe sekit ahụ aghaghị ịbụ ọkụ na-eguzogide ọkụ, ọ pụghị ọkụ na ụfọdụ okpomọkụ, ọ nwere ike ime ka ọ dị nro.A na-akpọ ebe okpomọkụ n'oge a iko mgbanwe okpomọkụ (Tg point), na uru a na-ejikọta na ịdịte aka nke osisi PCB.
Kedu ihe bụ Tg dị elu?PCB sekit bọọdụ na uru nke iji elu Tg PCB: Mgbe okpomọkụ nke elu Tg e biri ebi sekit bọọdụ bilitere na a ụfọdụ ọnụ ụzọ, mkpụrụ ga-agbanwe si "glass steeti" na " roba steeti ", na okpomọkụ n'oge a na-akpọ. The osisi iko mgbanwe okpomọkụ (Tg).Ya bụ, Tg bụ okpomọkụ kachasị elu (° C.) nke mkpụrụ osisi na-anọgide na-esi ike.Nke ahụ bụ, ndị nkịtị PCB mkpụrụ ihe ga-anọgide na-adị nro, deform, gbazee na ndị ọzọ phenomena n'okpuru elu okpomọkụ, na n'otu oge ahụ, ọ ga-egosikwa a nkọ ọdịda nke n'ibu na eletriki Njirimara, nke ga-emetụta ọrụ ndụ. ngwaahịa.N'ozuzu, Tg osisi bụ 130 N'elu ℃, elu Tg bụ n'ozuzu karịa 170 ° C, na ọkara Tg bụ karịa 150 ° C;na-ejikarị PCB ebi ebi na Tg ≥ 170°C a na-akpọ elu Tg ebi akwụkwọ;Tg nke mkpụrụ ahụ na-abawanye, na nkwụsị ọkụ nke osisi a na-ebipụta akwụkwọ, Atụmatụ ndị dị ka mmiri na-eguzogide mmiri, nkwụsị nke mmiri ọgwụ, na nkwụsi ike niile na-eme ka ọ dịkwuo mma. na usoro na-enweghị ndu, enwere ọtụtụ ngwa nke Tg dị elu;elu Tg na-ezo aka na oke okpomọkụ na-eguzogide.Na ngwa ngwa mmepe nke ngwá electronic ụlọ ọrụ, karịsịa electronic ngwaahịa na-anọchi anya kọmputa, na-emepe emepe kwupụta elu arụmọrụ na elu multi-layers, nke na-achọ elu okpomọkụ iguzogide nke PCB mkpụrụ ihe dị ka a mkpa.Mwepụta na mmepe nke teknụzụ na-arị elu dị elu nke SMT na CMT na-anọchi anya ya mere PCB ka ọ bụrụ nke a na-apụghị ịgbagha agbagha na nkwado nke nnukwu okpomọkụ na-eguzogide nke mkpụrụ n'ihe gbasara obere oghere, ezi akara, na thinning.Ya mere, ihe dị iche n'etiti izugbe FR-4 na elu Tg: na elu okpomọkụ, karịsịa n'okpuru okpomọkụ mgbe mmiri absorption, na n'ibu ike, akụkụ kwụsie ike, adhesiveness, mmiri absorption, thermal decomposition, thermal mgbasa, wdg nke ihe E nwere ọdịiche. n'etiti abụọ ọnọdụ, na elu Tg ngwaahịa bụ doro anya na mma karịa nkịtị PCB sekit osisi mkpụrụ ihe.
Oge nzipu: Eprel-26-2023