Kugeza ubu, hari ubwoko butandukanye bwa laminate zambaye umuringa zikoreshwa cyane mu gihugu cyanjye, kandi ibiranga ni ibi bikurikira: ubwoko bwa laminate zambaye umuringa, ubumenyi bwa laminate zambaye umuringa, hamwe nuburyo bwo gushyira mu byiciro bya laminate zambaye umuringa.Mubisanzwe, ukurikije ibikoresho bitandukanye bishimangira ikibaho, birashobora kugabanywamo ibyiciro bitanu: urupapuro rwimpapuro, ikirahuri cya fibre fibre base, base base (CEM series), urumuri rwinshi rwibanze rwibanze hamwe nibikoresho byihariye (ceramic, core core shingiro, n'ibindi).Niba ishyizwe mubikorwa ukurikije resin yifata ikoreshwa mu kibaho, impapuro zisanzwe zishingiye kuri CCI.Hano hari: resin ya fenolike (XPC, XxxPC, FR-1, FR-2, nibindi), epoxy resin (FE-3), polyester resin nubundi bwoko.Ikirahuri gisanzwe cya fibre fibre base CCL ifite epoxy resin (FR-4, FR-5), kuri ubu ni ubwoko bukoreshwa cyane mubirahuri bya fibre fibre.Mubyongeyeho, hari nibindi bisigarira bidasanzwe (umwenda wibirahure, fibre polyamide, imyenda idoda, nibindi nkibikoresho byongeweho): bismaleimide yahinduwe triazine resin (BT), resin polyimide (PI), Diphenylene ether resin (PPO), maleic anhydride imine-styrene resin (MS), resin polycyanate, resine polyolefin, nibindi. Ukurikije imikorere ya flame retardant ya CCL, irashobora kugabanywamo ubwoko bubiri bwibibaho: flame retardant (UL94-VO, UL94-V1) na non- flame retardant (UL94-HB) .Mu myaka imwe cyangwa ibiri ishize, hibandwa cyane ku kurengera ibidukikije, ubwoko bushya bwa CCL butarimo brom bwatandukanijwe na flame-retardant CCL, ishobora kwitwa "icyatsi kibisi. CCL ”.Hamwe niterambere ryihuse ryibikoresho bya elegitoroniki, haribisabwa hejuru ya cCL.Kubwibyo, uhereye kumikorere ya CCL, igabanijwe mubikorwa rusange CCL, dielectric ihoraho ya CCL, irwanya ubushyuhe bwinshi CCL (muri rusange L yubuyobozi iri hejuru ya 150 ° C), hamwe na coefficient CCL yo kwagura ubushyuhe (muri rusange ikoreshwa kuri gupakira substrates)) nubundi bwoko.Hamwe niterambere hamwe niterambere ryiterambere ryikoranabuhanga rya elegitoronike, ibisabwa bishya bihora bishyirwa imbere kubikoresho byanditse byanditseho ibikoresho, bityo bigateza imbere iterambere ryikomeza ryumuringa wambaye umuringa.Kugeza ubu, ibipimo ngenderwaho byibikoresho bya substrate nibi bikurikira
Standard Igipimo cyigihugu: Igipimo cyigihugu cyigihugu kijyanye nibikoresho bya substrate birimo GB / T4721-47221992 na GB4723-4725-1992.Igipimo cy’umuringa cyambaye laminates muri Tayiwani, mu Bushinwa nicyo gipimo cya CNS, cyakozwe hashingiwe ku gipimo cy’Ubuyapani JIS kandi cyashinzwe mu 1983. gusohora.
Standard Ibipimo mpuzamahanga: Ubuyapani bwa JIS, ASTM y'Abanyamerika, NEMA, MIL, IPc, ANSI, UL igipimo, Bs yo mu Bwongereza, DIN yo mu Budage, VDE, Igifaransa NFC, UTE, Kanada CSA, Igipimo cya ASA cyo muri Ositaraliya, icyahoze ari Leta Zunze Ubumwe z'Abasoviyeti, amahame mpuzamahanga ya IEC, n'ibindi.;abatanga ibikoresho byo gushushanya bya PCB, bisanzwe kandi bikoreshwa cyane ni: Shengyi \ Kingboard \ International, nibindi.
PCB yumuzunguruko wibikoresho byerekana: ukurikije urwego rwubuziranenge kuva hasi kugeza hejuru, igabanijwe kuburyo bukurikira: 94HB-94VO-CEM-1-CEM-3-FR-4
Ibipimo birambuye n'imikoreshereze ni ibi bikurikira:
94HB
: Ikarito isanzwe, ntabwo irinda umuriro (ibikoresho byo mu rwego rwo hasi cyane, bipfa gukubita, ntibishobora gukoreshwa nkibibaho byamashanyarazi)
94V0: ikarito ya flame retardant (gupfa gukubita)
22F
: Uruhande rumwe igice cya fibre fibre fibre (gupfa gukubita)
CEM-1
: Ikibaho kimwe cya fiberglass (kigomba gucukurwa na mudasobwa, ntigikubitwa)
CEM-3
. FR-4)
FR-4:
Ikibaho cya fiberglass ebyiri
1. Itondekanya ryimiterere yumuriro irashobora kugabanywamo ubwoko bune: 94VO-V-1-V-2-94HB
2. Itegure: 1080 = 0.0712mm, 2116 = 0.1143mm, 7628 = 0.1778mm
3. FR4 CEM-3 byose byerekana imbaho, fr4 nikibaho cya fibre fibre, na cem3 ni substrate igizwe
4. Halogen itagira insimburangingo idafite halogene (ibintu nka fluor, bromine, iyode, nibindi), kubera ko brom izabyara imyuka yubumara iyo itwitswe, bikaba bisabwa no kurengera ibidukikije.
5. Tg nubushyuhe bwikirahure, aribwo gushonga.
6. Ikibaho cyumuzunguruko kigomba kuba cyirinda umuriro, ntigishobora gutwika ubushyuhe runaka, gishobora koroshya gusa.Ubushyuhe muri iki gihe bwitwa ubushyuhe bwikirahure (Tg point), kandi ako gaciro kajyanye nigihe kirekire cyubuyobozi bwa PCB.
Tg ni iki?Ikibaho cyumuzunguruko wa PCB nibyiza byo gukoresha Tg PCB ndende: Iyo ubushyuhe bwikibaho kinini cya Tg cyacapwe cyumuzunguruko kizamutse kugera kumurongo runaka, substrate izahinduka kuva "ikirahuri" ihinduka "reberi", kandi ubushyuhe muriki gihe bwitwa ikibaho cyibirahure ubushyuhe (Tg).Nukuvuga, Tg nubushyuhe bwo hejuru (° C.) aho substrate ikomeza gukomera.Nukuvuga ko ibikoresho bisanzwe bya PCB bizakomeza koroshya, guhindura, gushonga nibindi bintu munsi yubushyuhe bwinshi, kandi mugihe kimwe, bizanagaragaza igabanuka rikabije ryimiterere yamashanyarazi namashanyarazi, bizagira ingaruka kumibereho ya serivisi ya ibicuruzwa.Mubisanzwe, ikibaho cya Tg ni 130 Hejuru ℃, Tg ndende muri rusange irenga 170 ° C, naho Tg yo hagati irenga 150 ° C;mubisanzwe PCB yacapishijwe ikibaho hamwe na Tg ≥ 170 ° C bita ikibaho kinini cya Tg cyacapwe;Tg ya substrate iriyongera, hamwe nubushyuhe bwubushyuhe bwibibaho byacapwe, Ibiranga nko kurwanya ubushuhe, kurwanya imiti, no gutuza byose byongerewe imbaraga kandi bigatezwa imbere. Iyo agaciro ka TG niko keza, niko kurwanya ubushyuhe bwibibaho, cyane cyane murwego rwo kuyobora-inzira, hari byinshi bisabwa bya Tg ndende;muremure Tg bivuga ubushyuhe bwinshi.Hamwe niterambere ryihuse ryinganda za elegitoroniki, cyane cyane ibicuruzwa bya elegitoronike bihagarariwe na mudasobwa, biratera imbere bigana ku mikorere ihanitse kandi igizwe n’ibice byinshi, bisaba guhangana n’ubushyuhe bukabije bw’ibikoresho bya PCB nkibisabwa.Kugaragara no guteza imbere tekinoroji yo kwishyiriraho cyane ihagarariwe na SMT na CMT byatumye PCB irushaho gutandukana no gushyigikirwa nubushyuhe bukabije bwa substrate mubijyanye na aperture ntoya, umurongo mwiza, no kunanuka.Kubwibyo, itandukaniro riri hagati ya rusange FR-4 na Tg ndende: mubushyuhe bwinshi, cyane cyane munsi yubushyuhe nyuma yo kwinjizwa nubushuhe, imbaraga za mashini, ituze ryikigereranyo, gufatira hamwe, kwinjiza amazi, kubora ubushyuhe, kwagura ubushyuhe, nibindi bikoresho Hariho itandukaniro hagati yibi bihe byombi, nibicuruzwa bya Tg birebire biragaragara ko ari byiza kuruta ibikoresho bisanzwe bya PCB byumuzunguruko.
Igihe cyo kohereza: Apr-26-2023