Chiyambi cha gawo lapansi la PCB

Gulu la substrates

General kusindikizidwa bolodi gawo lapansi zipangizo akhoza kugawidwa m'magulu awiri: okhwima gawo lapansi zipangizo ndi flexible gawo lapansi.Mtundu wofunikira wazinthu zolimba zolimba kwambiri ndi copper clad laminate.Zimapangidwa ndi Kulimbitsa Zida, zomwe zimayikidwa ndi resin binder, zouma, zodulidwa ndi laminated kukhala zopanda kanthu, kenako zimakutidwa ndi zojambulazo zamkuwa, pogwiritsa ntchito pepala lachitsulo ngati nkhungu, ndikukonzedwa ndi kutentha kwakukulu ndi kupanikizika kwakukulu mu makina osindikizira otentha.General multilayer semi-cured sheet, amavala zamkuwa popanga zinthu zomwe zatha (makamaka nsalu zamagalasi zoviikidwa mu utomoni, kudzera mu kuyanika).

Pali njira zingapo zopangira laminate yamkuwa.Nthawi zambiri, malinga ndi zida zosiyanasiyana zolimbikitsira gululo, zitha kugawidwa m'magulu asanu: m'munsi mwa pepala, nsalu zamagalasi, nsalu zopangira magalasi, gulu lamagulu (CEM zino), gulu la laminated multilayer board ndi m'munsi mwapadera (ceramics, zitsulo pachimake). etc.).Ngati gulu ntchito zosiyanasiyana utomoni zomatira kwa gulu, wamba pepala - zochokera CCI.Pali: phenolic resin (XPc, XxxPC, FR 1, FR 2, etc.), epoxy resin (FE 3), polyester resin ndi mitundu ina.CCL yodziwika bwino ndi epoxy resin (FR-4, FR-5), yomwe imagwiritsidwa ntchito kwambiri pansalu yamagalasi.Kuphatikiza apo, palinso utomoni wina wapadera (nsalu yamagalasi, nsalu za polyamide, nsalu zopanda nsalu, ndi zina zambiri, monga zida zowonjezera): bismaleimide modified trizine resin (BT), polyimide resin (PI), diphenyl ether resin (PPO), maleic anhydride imide - styrene resin (MS), polycyanate ester resin, polyolefin resin, etc.

Malinga ndi magwiridwe antchito a CCL, amatha kugawidwa m'mitundu yoletsa moto (UL94-VO, UL94-V1) ndi mtundu wosayatsa moto (Ul94-HB).M'zaka zapitazi za 12, pamene chisamaliro chambiri chaperekedwa ku chitetezo cha chilengedwe, mtundu watsopano wa CCL wosagwira moto wamoto wopanda bromine walekanitsidwa, womwe ukhoza kutchedwa "CCL yobiriwira yamoto-retardant".Ndi chitukuko chofulumira chaukadaulo wazinthu zamagetsi, cCL ili ndi zofunikira zapamwamba kwambiri.Choncho, kuchokera CCL gulu ntchito, ndipo anawagawa CCL ambiri, otsika dielectric zonse CCL, mkulu kutentha kukana CCL (General mbale L mu 150 ℃ pamwamba), otsika matenthedwe kukula koyenelera CCL (zambiri ntchito pa ma CD gawo lapansi) ndi mitundu ina. .

Muyezo wa kukhazikitsa gawo lapansi

Ndi chitukuko ndi mosalekeza luso lamakono pakompyuta, zofunika zatsopano nthawi zonse anaika patsogolo kusindikizidwa bolodi gawo gawo lapansi, kotero kuti kulimbikitsa chitukuko mosalekeza mfundo mkuwa atavala mbale mbale.Pakalipano, mfundo zazikuluzikulu za substrate zipangizo ndi izi.
1) Miyezo Yadziko Lamagawo Pakali pano, Miyezo yadziko lonse lapansi yagawo ku China ikuphatikizapo GB/T4721 — 4722 1992 ndi GB 4723 — 4725 — 1992. Muyezo wa zotchingira zamkuwa ku Taiwan ku China ndi muyezo wa CNS, womwe wakhazikitsidwa. pa muyezo wa Japan JIs ndipo idaperekedwa mu 1983.

Ndi chitukuko ndi mosalekeza luso lamakono pakompyuta, zofunika zatsopano nthawi zonse anaika patsogolo kusindikizidwa bolodi gawo gawo lapansi, kotero kuti kulimbikitsa chitukuko mosalekeza mfundo mkuwa atavala mbale mbale.Pakalipano, mfundo zazikuluzikulu za substrate zipangizo ndi izi.
1) Miyezo Yadziko Lamagawo Pakali pano, miyezo ya dziko la China pamagawo ang'onoang'ono ikuphatikiza GB/T4721 — 4722 1992 ndi GB 4723 — 4725 — 1992. Japanese JIs muyezo ndipo inaperekedwa mu 1983.
2) Miyezo ina ya dziko ikuphatikizapo Japanese JIS muyezo, American ASTM, NEMA, MIL, IPc, ANSI ndi UL muyezo, British Bs muyezo, German DIN ndi VDE muyezo, French NFC ndi UTE muyezo, Canadian CSA muyezo, Australian AS muyezo, FOCT muyezo za zomwe kale zinali Soviet Union, komanso muyezo wapadziko lonse wa IEC

Muyezo wa chidule cha dzina ladziko lonse umatchedwa dipatimenti yopanga mayina
JIS- Japan Industrial Standard - Japan Specification Association
ASTM- American Society for Laboratory Materials Standards -American Society fof Testi 'ng ndi Zida
NEMA- National Association of Electrical Manufactures Standard -Nafiomll Electrical Manufactures
MH- United States Military Military Standards -Dipatimenti Yoyang'anira Zachitetezo Chapadera ndi Miyezo Yankhondo
IPC- American Circuit Interconnection and Packaging Association Standard -Sabata yowona kwa Interoonnecting and Packing EIectronics Circuits
ANSl - American National Standard Institute