1. Inqubo eyinhloko

I-Browning→vula i-PP→ukuhlela kusengaphambili→isakhiwo→cindezela-linganisa→qaqa→ifomu→FQＣ→IQＣ→iphakheji

2. Amapuleti akhethekile

(1) Izinto eziphezulu ze-tg pcb

Ngokuthuthukiswa kwemboni yolwazi lwe-elekthronikhi, izinkambu zesicelo ze amabhodi aphrintiwe ziye zaba banzi futhi zanda, futhi izidingo zokusebenza kwamabhodi aphrintiwe ziye zahlukahluka kakhulu.Ngokungeziwe ekusebenzeni kwama-substrates e-PCB avamile, ama-substrates e-PCB nawo ayadingeka ukuze asebenze ngokuzinza emazingeni okushisa aphezulu.Ngokuvamile, FR-4 amabhodi ayikwazi ukusebenza ngokuzinzile ezindaweni zokushisa okuphezulu ngenxa yokuthi izinga lokushisa lokushintsha kwengilazi (Tg) lingaphansi kuka-150°C.

Sethula ingxenye ye-trifunctional kanye ne-polyfunctional epoxy resin noma sethula ingxenye ye-phenolic epoxy resin ekwakhekeni kwe-resin evamile yebhodi le-FR-4 ukuze kukhuliswe i-Tg isuka ku-125–130℃ iye ku-160～200℃, leyo ebizwa ngokuthi i-High Tg.I-High Tg ingathuthukisa ngokuphawulekayo izinga lokunweba elishisayo lebhodi ohlangothini lwe-axis engu-Z (ngokwezibalo ezifanele, i-Z-axis CTE ye-FR-4 evamile ingu-4.2 phakathi nenqubo yokushisisa engu-30 kuya ku-260 ℃, kuyilapho i-FR- 4 ye-High Tg ingu-1.8 kuphela), Ukuze kuqinisekiswe ngempumelelo ukusebenza kukagesi ngezimbobo phakathi kwezingqimba zebhodi lezendlalelo eziningi;

(2) Izinto zokuvikela imvelo

Ama-laminates agqoke i-copper avumelana nemvelo ngeke akhiqize izinto eziyingozi emzimbeni womuntu kanye nemvelo ngesikhathi sokukhiqiza, ukucubungula, ukufaka isicelo, umlilo, nokulahlwa (ukuvuselela, ukungcwaba, nokushiswa).Izimpawu eziqondile zimi kanje:

① Ayiqukethe i-halogen, i-antimony, i-phosphorus ebomvu, njll.

② Ayiqukethe izinsimbi ezisindayo njengomthofu, i-mercury, i-chromium, ne-cadmium.

③ Ukuvutha kufinyelela izinga le-UL94 V-0 noma izinga le-V-1 (FR-4).

④ Ukusebenza okuvamile kuhlangabezana nezinga le-IPC-4101A.

⑤ Ukonga amandla nokugaywa kabusha kuyadingeka.

3. I-oxidation yebhodi lesendlalelo sangaphakathi (i-browning noma imnyama):

Ibhodi eliwumgogodla lidinga ukufakwa nge-oxidized futhi lihlanzwe futhi lomiswe ngaphambi kokuba licindezelwe.Inemisebenzi emibili:

a.Khulisa indawo engaphezulu, uqinise ukunamathela (Adhension) noma ukulungiswa (Bondabity) phakathi kwe-PP nethusi elingaphezulu.

b.I-dense passivation layer (Passivation) ikhiqizwa ebusweni bethusi elingenalutho ukuvimbela ithonya lama-amine ku-glue ewuketshezi endaweni yethusi emazingeni okushisa aphezulu.

4. Ifilimu (Prepreg):

(1) Ukwakheka: Ishidi elakhiwe ngendwangu ye-fiber yengilazi kanye ne-semi-cured resin, ephulukiswa ekushiseni okuphezulu, futhi iyinto enamathelayo yamabhodi amaningi;

(2) Uhlobo: Kunezinhlobo ezingu-106, 1080, 2116 kanye ne-7628 ze-PP evame ukusetshenziswa;

(3) Kunezinto ezintathu eziyinhloko ezibonakalayo: Ukugeleza Kwe-Resin, Okuqukethwe Kwe-Resin, kanye Nesikhathi Se-Gel.

5. Idizayini yesakhiwo esicindezelayo:

(1) Ingqikithi ezacile enogqinsi olukhudlwana iyakhethwa (ukuzinza kwe-dimensional okungcono kakhulu);

(2) I-pp ebiza kancane iyakhethwa (ngohlobo olufanayo lwendwangu yengilazi ye-prepreg, okuqukethwe kwe-resin akuthinti inani);

(3) Isakhiwo se-Symmetrical siyathandwa;

(4) Ukuqina kwe-dielectric layer>ukujiya kwe-copper yangaphakathi ye-foil×2;

(5) Akuvunyelwe ukusebenzisa i-prepreg enokuqukethwe okuphansi kwe-resin phakathi kwezingqimba ezingu-1-2 kanye nezingqimba ze-n-1/n, ezifana ne-7628 × 1 (n inombolo yezendlalelo);

(6) Kuma-prepregs angu-5 noma ngaphezulu ahlelwe ndawonye noma ubukhulu bongqimba lwe-dielectric bukhulu kunama-mils angu-25, ngaphandle kwezingqimba ezingaphandle nezingaphakathi impela zisebenzisa i-prepreg, i-prepreg ephakathi nendawo ithathelwa indawo ibhodi elikhanyayo;

(7) Uma ungqimba lwesibili kanye no-n-1 kuyithusi eliphansi elingu-2oz futhi ugqinsi lwezendlalelo ezivikelayo eziwu-1-2 kanye no-n-1/n lungaphansi kuka-14mil, akuvunyelwe ukusebenzisa i-prepreg eyodwa, futhi ungqimba olungaphandle ludinga sebenzisa okuqukethwe kwe-resin ephezulu prepreg , Okufana ne-2116, 1080;

(8) Uma usebenzisa i-prepreg engu-1 yebhodi le-1oz yethusi yangaphakathi, izendlalelo ezingu-1-2 kanye nezendlalelo ze-n-1/n, i-prepreg kufanele ikhethwe ngokuqukethwe okuphezulu kwe-resin, ngaphandle kwe-7628 × 1;

(9) Akuvunyelwe ukusebenzisa i-PP eyodwa kumabhodi anethusi elingaphakathi ≥ 3oz.Ngokuvamile, i-7628 ayisetshenziswa.Ama-prepreg amaningi anokuqukethwe okuphezulu kwe-resin kufanele asetshenziswe, njengokuthi 106, 1080, 2116...

(10) Kumabhodi ezendlalelo eziningi anezindawo ezingenakhothusi ezinkulu kuno-3"×3" noma 1"×5", prepreg ngokuvamile ayisetshenziselwa amashidi angawodwa phakathi kwamabhodi abalulekile.

6. Inqubo yokucindezela

a.Umthetho wendabuko

Indlela ejwayelekile ukupholisa phezulu naphansi embhedeni owodwa.Ngesikhathi sokukhuphuka kwezinga lokushisa (cishe imizuzu eyi-8), sebenzisa u-5-25PSI ukuthambisa ingcina egelezayo ukuze kancane kancane uxoshe amabhamuza encwadini yamapuleti.Ngemuva kwemizuzu engu-8, i-viscosity yeglue ibilokhu Khulisa ingcindezi ekucindezelweni okugcwele kwe-250PSI ukuze ukhiphe amabhamuza asondele kakhulu onqenqemeni, futhi uqhubeke uqinisa i-resin ukuze unwebe ukhiye kanye nebhuloho lokhiye oseceleni imizuzu engama-45 izinga lokushisa eliphezulu nokucindezela okuphezulu okungu-170 ℃, bese uyigcina embhedeni wokuqala.Ingcindezi yasekuqaleni yehliswa cishe imizuzu eyi-15 ukuze kuqiniswe.Ngemuva kokuthi ibhodi liphuma embhedeni, kufanele libhakwe kuhhavini elingu-140 ° C amahora angu-3-4 ukuze liqhubeke lukhuni.

b.Ukushintsha kwe-resin

Ngokukhula kwamabhodi anezingqimba ezine, i-laminate enezingqimba eziningi ibe nezinguquko ezinkulu.Ukuze uhambisane nalesi simo, ifomula ye-epoxy resin kanye nokucubungula ifilimu nakho kushintshiwe.Ushintsho olukhulu kakhulu lwe-FR-4 epoxy resin ukukhulisa ukwakheka kwe-accelerator futhi wengeze inhlaka ye-phenolic noma amanye ama-resin ukuze angene futhi ome u-B engutsheni yengilazi.-I-Satge epoxy resin inokwenyuka okuncane kwesisindo samangqamuzana, futhi amabhondi aseceleni ayakhiqizwa, okuholela ekuminyaneni okukhulu kanye ne-viscosity, okunciphisa ukusebenza kabusha kwale B-Satge ku-C-Satge, futhi kunciphisa izinga lokugeleza ekushiseni okuphezulu nokucindezela okukhulu. ., Isikhathi sokuguqulwa singandiswa, ngakho-ke kufanelekile indlela yokukhiqiza inombolo enkulu yokunyathelisa enezinqwaba eziningi zamapuleti aphezulu namakhulu, futhi kusetshenziswa ingcindezi ephakeme.Ngemva kokuqedwa komshini wokunyathelisa, ibhodi elinezingqimba ezine linamandla angcono kune-epoxy resin yendabuko, njengokuthi : Ukuzinza kwe-Dimensional, ukumelana kwamakhemikhali, nokumelana ne-solvent.

c.Indlela yokucindezela okukhulu

Njengamanje, zonke ziyimishini emikhulu yokuhlukanisa imibhede eshisayo nebandayo.Kukhona okungenani izimbobo zamathini ezine kanye nezintuba eziyishumi nesithupha.Cishe zonke ziyashisa ngaphakathi nangaphandle.Ngemuva kwemizuzu eyi-100-120 yokuqiniswa kokushisa, aphushwa ngokushesha embhedeni wokupholisa ngesikhathi esifanayo., Ukucindezela okubandayo kuzinzile mayelana ne-30-50min ngaphansi kwengcindezi ephezulu, okungukuthi, yonke inqubo yokucindezela iphelile.

7. Ukusetha uhlelo lokucindezela

Inqubo yokucindezela inqunywa izici eziyisisekelo ze-Prepreg, izinga lokushisa lokuguqulwa kwengilazi kanye nesikhathi sokuphulukisa;

(1) Isikhathi sokuphulukisa, izinga lokushisa lokushintsha kwengilazi nezinga lokushisa kuthinta ngokuqondile umjikelezo wokucindezela;

(2) Ngokuvamile, ukucindezela esigabeni sokucindezela okuphezulu kusethelwe ku-350±50 PSI;