1. Njira yayikulu

Browning→tsegula PP→kukonzeranitu→makonzedwe→kanikizani-komani→chotsani→mpangidwe→FQＣ→IQＣ→paketi

2. Ma mbale apadera

(1) High tg pcb zakuthupi

Ndi chitukuko cha makampani zidziwitso zamagetsi, ntchito minda ya matabwa osindikizidwa zakhala zokulirapo komanso zokulirapo, ndipo zofunika pakugwira ntchito kwa matabwa osindikizidwa zakhala zosiyanasiyana.Kuphatikiza pa magwiridwe antchito wamba a PCB, magawo a PCB amafunikiranso kugwira ntchito mokhazikika pakutentha kwambiri.Nthawi zambiri, Zithunzi za FR-4 sangathe kugwira ntchito mokhazikika m'malo otentha kwambiri chifukwa kutentha kwa galasi (Tg) kumakhala pansi pa 150 ° C.

Kuyambitsa gawo la trifunctional ndi polyfunctional epoxy resin kapena kuyambitsa gawo la phenolic epoxy resin mu utomoni wa general FR-4 board kuti awonjezere Tg kuchoka pa 125 ~ 130 ℃ mpaka 160 ~ 200 ℃, yotchedwa High Tg.Mkulu Tg akhoza kwambiri kusintha matenthedwe kukulitsa mlingo wa bolodi mu njira Z-olamulira (malinga ndi ziwerengero zogwirizana, ndi Z-olamulira CTE wamba FR-4 ndi 4.2 pa Kutentha ndondomeko 30 mpaka 260 ℃, pamene FR- 4 ya High Tg ndi 1.8 yokha), Kuti mutsimikizire bwino ntchito yamagetsi pamabowo pakati pa zigawo za bolodi la multilayer;

(2) Zida zotetezera chilengedwe

Zovala zamkuwa zokhala ndi chilengedwe sizidzatulutsa zinthu zovulaza thupi la munthu komanso chilengedwe panthawi yopanga, kukonza, kugwiritsa ntchito, moto, ndi kutaya (kubwezeretsanso, kukwirira, ndi kuyatsa).Mawonetseredwe enieni ndi awa:

① Lilibe halogen, antimoni, phosphorous wofiira, ndi zina zotero.

② Lilibe zitsulo zolemera monga lead, mercury, chromium, ndi cadmium.

③ Kutentha kumafika pamlingo wa UL94 V-0 kapena mulingo wa V-1 (FR-4).

④ Kuchita kwanthawi zonse kumakumana ndi muyezo wa IPC-4101A.

⑤ Kupulumutsa mphamvu ndi kubwezeretsanso ndikofunikira.

3. Makutidwe ndi okosijeni wa bolodi wosanjikiza wamkati (bulauni kapena mdima):

Bolodi lalikulu liyenera kukhala lopangidwa ndi okosijeni ndikutsukidwa ndikuwumitsa lisanapanikizidwe.Lili ndi ntchito ziwiri:

a.Wonjezerani pamtunda, limbitsani kumamatira (Adhension) kapena kukonza (Bondabity) pakati pa PP ndi mkuwa wamkuwa.

b.A wandiweyani passivation wosanjikiza (Passivation) amapangidwa padziko anabala mkuwa kuteteza chikoka cha amines mu madzi guluu pa mkuwa pamwamba pa kutentha.

4. Kanema (Prepreg):

(1) Mapangidwe: Pepala lopangidwa ndi nsalu zagalasi ndi utomoni wochiritsidwa, womwe umachiritsidwa pa kutentha kwakukulu, ndi zomatira za matabwa a multilayer;

(2) Mtundu: Pali 106, 1080, 2116 ndi 7628 mitundu ya PP yomwe imagwiritsidwa ntchito;

(3) Pali zinthu zitatu zazikulu zakuthupi: Resin Flow, Resin Content, ndi Gel Time.

5. Mapangidwe a makina osindikizira:

(1) Pakatikati pawoonda wokhala ndi makulidwe okulirapo amakondedwa (kukhazikika bwino kwa mawonekedwe);

(2) Mtengo wotsika mtengo pp umasankhidwa (kwa mtundu wansalu wagalasi womwewo wa prepreg, zomwe zili ndi utomoni sizimakhudza mtengo);

(3) Mapangidwe a Symmetrical amakonda;

(4) Makulidwe a dielectric wosanjikiza> makulidwe a zojambula zamkuwa zamkati × 2;

(5) Ndizoletsedwa kugwiritsa ntchito prepreg yokhala ndi utomoni wochepa pakati pa zigawo za 1-2 ndi n-1 / n zigawo, monga 7628 × 1 (n ndi chiwerengero cha zigawo);

(6) Pakuti 5 kapena prepregs anakonza pamodzi kapena makulidwe a dielectric wosanjikiza ndi wamkulu kuposa 25 mils, kupatula zigawo zakunja ndi zamkati ntchito prepreg, pakati prepreg m'malo ndi bolodi kuwala;

(7) Pamene zigawo zachiwiri ndi n-1 ndi 2oz pansi mkuwa ndi makulidwe a 1-2 ndi n-1 / n insulating zigawo zosakwana 14mil, ndikoletsedwa kugwiritsa ntchito prepreg imodzi, ndipo wosanjikiza wakunja ayenera gwiritsani ntchito utomoni wapamwamba prepreg , Monga 2116, 1080;

(8) Pogwiritsira ntchito 1 prepreg kwa bolodi lamkati lamkuwa la 1oz, zigawo za 1-2 ndi zigawo za n-1 / n, prepreg iyenera kusankhidwa ndi utomoni wapamwamba, kupatulapo 7628 × 1;

(9) Ndizoletsedwa kugwiritsa ntchito PP imodzi kwa matabwa okhala ndi mkuwa wamkati ≥ 3oz.Nthawi zambiri, 7628 sagwiritsidwa ntchito.Ma prepregs angapo okhala ndi utomoni wambiri ayenera kugwiritsidwa ntchito, monga 106, 1080, 2116 ...

(10) Kwa matabwa ambiri okhala ndi madera opanda mkuwa oposa 3"×3" kapena 1"×5", prepreg nthawi zambiri sagwiritsidwa ntchito pamapepala amodzi pakati pa matabwa apakati.

6. The kukanikiza ndondomeko

a.Lamulo lachikhalidwe

Njira yodziwika bwino ndiyo kuziziritsa ndi kutsika pabedi limodzi.Panthawi yotentha (pafupifupi mphindi 8), gwiritsani ntchito 5-25PSI kuti mufewetse guluu wothamanga kuti pang'onopang'ono muthamangitse thovu mubuku la mbale.Pambuyo mphindi 8, mamasukidwe akayendedwe a guluu wakhala Wonjezerani kukakamizidwa kwa mphamvu zonse 250PSI kuti Finyani thovu pafupi m'mphepete, ndi kupitiriza kuumitsa utomoni kuwonjezera fungulo ndi mbali kiyi mlatho kwa mphindi 45 pa kutentha kwambiri komanso kuthamanga kwambiri kwa 170 ℃, kenako ndikusunga pabedi loyambirira.Kupanikizika koyambirira kumatsitsidwa kwa mphindi pafupifupi 15 kuti kukhazikike.Pambuyo pa bolodi kuchokera pabedi, iyenera kuphikidwa mu uvuni pa 140 ° C kwa maola 3-4 kuti ikhale yolimba.

b.Kusintha kwa resin

Ndi kuwonjezeka kwa matabwa anayi, laminate yamitundu yambiri yasintha kwambiri.Kuti zigwirizane ndi momwe zinthu zilili, mawonekedwe a epoxy resin ndi kukonza mafilimu asinthidwanso.Kusintha kwakukulu kwa FR-4 epoxy resin ndikuwonjezera kapangidwe ka accelerator ndikuwonjezera phenolic resin kapena ma resin ena kuti alowe ndikuwuma B pansalu yagalasi.-Satge epoxy resin imakhala ndi kuwonjezeka pang'ono kwa kulemera kwa maselo, ndipo zomangira zam'mbali zimapangidwira, zomwe zimapangitsa kuti pakhale kachulukidwe komanso kukhuthala, zomwe zimachepetsa reactivity ya B-Satge iyi ku C-Satge, ndipo imachepetsa kuthamanga kwa kutentha ndi kuthamanga kwambiri. ., Nthawi yotembenuka imatha kuwonjezereka, choncho ndiyoyenera kupanga njira yopangira makina ambiri osindikizira omwe ali ndi zitsulo zambiri za mbale zazikulu ndi zazikulu, ndipo kupanikizika kwakukulu kumagwiritsidwa ntchito.Pambuyo pomaliza kusindikiza, bolodi la magawo anayi limakhala ndi mphamvu kuposa epoxy resin yachikhalidwe, monga : Dimensional stability, chemical resistance, and solvent resistance.

c.Misa kukanikiza njira

Pakadali pano, onse ndi zida zazikulu zolekanitsira mabedi otentha ndi ozizira.Pali zotsegula zosachepera zinayi komanso zotsegulira khumi ndi zisanu ndi chimodzi.Pafupifupi onse akutentha mkati ndi kunja.Pambuyo pa mphindi 100-120 za kuuma kwa kutentha, amakankhidwira mofulumira pabedi lozizira nthawi yomweyo., Kuzizira kozizira kumakhala kokhazikika kwa pafupifupi 30-50min pansi pa kupanikizika kwakukulu, ndiko kuti, njira yonse yosindikizira yatha.

7. Makhazikitsidwe a pulogalamu kukanikiza

Njira yolimbikitsira imatsimikiziridwa ndi zofunikira zakuthupi za Prepreg, kutentha kwa magalasi ndi nthawi yochiritsa;

(1) Kuchiritsa nthawi, kutentha kwa magalasi ndi kutentha kwa kutentha kumakhudza mwachindunji kuzungulira;

(2) Kawirikawiri, kupanikizika mu gawo lapamwamba kwambiri kumayikidwa ku 350 ± 50 PSI;