Pcb multi-layer circuit board emepụta nwere ọkachamara nka nyocha na mmepe otu, nna ukwu ụlọ ọrụ elu usoro technology, na nwere pụrụ ịdabere na mmepụta ụlọ ọrụ, ule ụlọ ọrụ na anụ ahụ na chemical laboratories na ụdị nile nke ọrụ.FR-4 anyị na-ekwu maka ya ebe a bụ ụdị mpempe akwụkwọ a na-ejikarị eme ihe n'imepụta bọọdụ sekit multilayer pcb.
Ọ dị elu, nke a na-ejikarị ọla kọpa clad laminate na prepreg eme ihe n'ụwa bụ NEMA aha ya bụ FR4.
ihe dị ka 14% nke mkpokọta mmepụta bụ bọọdụ FR-4 nwere otu akụkụ ma ọ bụ nke nwere akụkụ abụọ, ihe fọdụrụ na 40% nke bọọdụ multi-layer bụ mkpa FR -4 laminates.The akụkọ ihe mere eme ọgwụgwụ nke FR-4's akara nke ahịa bụ tumadi n'ihi na eziokwu na ọ karịrị akwụkwọ dabeere laminates na thermal Njirimara, mma mmiri na chemical iguzogide, elu flexural ike na ezi bee ike..FR4 bụ laminate mbụ nke enwere ike iji maka mmiri na-esi na oghere nwere akụkụ abụọ n'ihi na ọ na-eguzogide mmiri na nsị kemịkal.Na mgbakwunye, uru FR-4 maka ego enweghị atụ.N'ime afọ ndị gafeworonụ, ụlọ ọrụ ahụ echere na FR-4 ga-enye ụzọ maka ihe ndị e mepụtara laminate ọhụrụ dabara adaba maka njupụta mgbakọ dị elu.Agbanyeghị, n'ihi oke ọnụ ahịa, ndị na-emepụta bọọdụ sekit ka na-achọ ụzọ ha ga-esi jiri FR-4 na mgbakọ dị elu.
Ihe na-ewusi ike nke ejiri FR4 laminates bụ eletrọnịkị Wib (E-glass).N'ihi akụrụngwa akụrụngwa ya dị mma nke ukwuu, ihe mkpuchi ọkụ eletrik na-eju afọ, nguzogide okpomọkụ, nguzogide mmiri na nguzogide acid, akwa akwa iko E-ụdị aghọọla ihe mgbakwunye ọkụ eletrik dị mma.Ihe niile eji eme ihe na FR4 nwere nhazi elu dị larịị dịka usoro eji akpa nkata si dị, a na-ekpuchikwa elu ya na akwa akwa iji mee ka njikọ dị n'etiti eriri iko na resins eke.N'oge usoro ịkwa akwa, a na-ekpebi oke na ọnụ ọgụgụ nke eriri iko.A na-ekpebi isi ihe dị arọ na ọkpụrụkpụ nke ákwà ngebichi agwụla, ọkpụkpụ nke ákwà mgbochi iko a na-eji maka bọọdụ a na-ebipụta na-abụkarị site na 6 ruo 172m, na prepreg nke mejupụtara akwa akwa iko na-ekpebi oke nke laminate.N'ozuzu, ọkpụrụkpụ nke FR4 laminate bụ bam ~ 1L57mm (na-abawanye na etiti oge nke 25pm), na ọkpụrụkpụ a kapịrị ọnụ na-adabere n'ụdị akwa eriri iko na ọdịnaya resin eke nke mpempe akwụkwọ nke ọkara kemịkal eji.A na-ekpebi arụmọrụ nke laminate bụ isi site na nhazi ahụ, ebe ọ bụ na onye zụrụ ya kwesịrị ịkpachara anya na-achọ ya, na maka ọkpụrụkpụ, e nwere ọtụtụ ihe owuwu nke nwere ike izute ohere ndị enyere.Ọdịiche dị na ọdịnaya resin eke (mgbe ụfọdụ a na-ezo aka dị ka oke osisi na akwa fiberglass) ga-emetụta njirimara nke laminate.
N'ozuzu usoro nke epoxy eke resin mejupụtara dị iche iche na-arụ ọrụ epoxy ogige, na ọkọlọtọ bifunctional epoxy eke resin (nke ọ bụla n'ime ya) na-enweta site na njikọ nke otu epoxy otu na tetrabromofluorescein A (TBPA).Enwere ogige oxygen oxygen abụọ na-emeghachi omume na yinye polymer), dịka egosiri na eserese 4.6.Ogologo yinye dị n'etiti otu dị iche iche na-ekpebi nkwụsi ike nke laminate na ihe ndị na-ekpo ọkụ nke laminate.N'oge usoro ọgwụgwọ ahụ, otu ikuku oxygen na-emeghachi omume na onye na-agwọ ọrịa ahụ iji malite matriks polymer nwere akụkụ atọ.Dịka akụkụ nke yinye polymer, a na-agbakwunye Wakamura bromine na TBBPA, nke na-eme ka TBPA nwee ihe na-egbochi ire ọkụ pụrụ iche.Dị ka Underwriters Laboratories si kwuo
(Underwriters Laboratory) UL94 ule, iji mee ka emechara laminate na V0 larịị nke ire retardancy, ọ dị mkpa ịgbakwunye bromine n'etiti 16% na 21% site ibu.
Ngwaahịa sekit pcb na pcb multilayer circuit board na-emepụta ihe mkpuchi 2-28 oyi akwa, mbadamba HDI, mbadamba ọla kọpa dị elu nke TG, mbadamba ụrọ dị nro na nke siri ike, mbadamba ugboro ugboro, laminates mgbasa ozi agwakọta, kpuru ìsì nke e liri site na mbadamba, metal substrates na enweghị. Halogen efere.Uru nke sekit ụgbọ ala Shenzhen dị n'ụdị wrenches dị n'etiti etiti dị elu, ọnụ ahịa ahụ ka dịkwa ọnụ ala, ọ nọkwa n'ọnọdụ na-eduga na ụlọ ọrụ pcb.
Oge nzipu: Ọgọst-08-2022