1. Inkqubo ephambili

Browning→vula iPP→ulungiselelo lwangaphambili→uyilo→cofa-faka→uqhaqha→ifomu→FQＣ→IQＣ→ipakethe

2. Amacwecwe akhethekileyo

(1) Izinto eziphezulu ze-tg pcb

Ngophuhliso lweshishini lolwazi lwe-elektroniki, imimandla yesicelo ye iibhodi eziprintiweyo ziye zanda kwaye zanda, kwaye iimfuno zokusebenza kweebhodi eziprintiweyo ziye zahluka kakhulu.Ukongeza ekusebenzeni kwe-PCB substrates eziqhelekileyo, i-PCB substrates nazo ziyafuneka ukuba zisebenze ngokuzinzileyo kumaqondo obushushu aphezulu.Ngokubanzi, Iibhodi ze-FR-4 ayikwazi ukusebenza ngokuzinzileyo kwiindawo zobushushu obuphezulu kuba iqondo lobushushu beglasi yabo (Tg) lingaphantsi kwe-150°C.

Ukwazisa inxalenye ye-trifunctional kunye ne-polyfunctional epoxy resin okanye ukwazisa inxalenye ye-phenolic epoxy resin kwi-resin formulation yebhodi jikelele ye-FR-4 ukunyusa i-Tg ukusuka kwi-125～130℃ ukuya kwi-160～200℃, ebizwa ngokuba yi-High Tg.I-Tg ephezulu inokuphucula ngokuphawulekayo izinga lokwandiswa kwe-thermal yebhodi kwi-Z-axis direction (ngokwezibalo ezifanelekileyo, i-Z-axis CTE ye-FR-4 eqhelekileyo yi-4.2 ngexesha lokufudumala kwe-30 ukuya ku-260 ℃, ngelixa i-FR- I-4 ye-High Tg yi-1.8 kuphela), ukuze kuqinisekiswe ngokufanelekileyo ukusebenza kombane kwimingxuma phakathi kweengqimba zebhodi ye-multilayer;

(2) Izinto zokukhusela indalo

I-laminates ezinxibe ubhedu ezinobume bendalo aziyi kuvelisa izinto ezinobungozi kumzimba womntu kunye nokusingqongileyo ngexesha lenkqubo yokuvelisa, ukusetyenzwa, ukufaka isicelo, umlilo, kunye nokulahlwa (ukuhlaziya, ukungcwaba, kunye nokutshisa).Imiboniso ethile yile ilandelayo:

① Ayiqulathanga i-halogen, i-antimony, i-phosphorus ebomvu, njl.

② Ayinazintsimbi ezinzima njengelothe, imekyuri, ichromium, kunye necadmium.

③ Ukutsha kufikelela kwinqanaba le-UL94 V-0 okanye izinga le-V-1 (FR-4).

④ Ukusebenza ngokubanzi kuhambelana nemigangatho ye-IPC-4101A.

⑤ Ukongiwa kwamandla kunye nokurisayikilisha kuyafuneka.

3. I-oxidation yebhodi yomaleko yangaphakathi (ibrown okanye imnyama):

Ibhodi engundoqo kufuneka ifakwe i-oxidized kwaye icocwe kwaye yomiswe ngaphambi kokuba icinezelwe.Inemisebenzi emibini:

a.Ukwandisa indawo ephezulu, uqinise ukunamathela (ukudibanisa) okanye ukulungiswa (i-Bondabity) phakathi kwePP kunye nobhedu lomhlaba.

b.I-dense passivation layer (Passivation) iveliswa phezu kobhedu olungenanto ukukhusela impembelelo ye-amines kwiglue yolwelo kwindawo yobhedu kumaqondo obushushu aphezulu.

4. Ifilimu (Prepreg):

(1) Ukubunjwa: Iphepha elenziwe ngelaphu lefiber yeglasi kunye ne-semi-cured resin, ephiliswa kwiqondo lokushisa eliphezulu, kwaye yinto yokubambelela kwiibhodi ezininzi;

(2) Uhlobo: Kukho i-106, i-1080, i-2116 kunye ne-7628 iintlobo zePP ezisetyenziswa ngokuqhelekileyo;

(3) Kukho izinto ezintathu eziphambili zomzimba: I-Resin Flow, i-Resin Content, kunye ne-Gel Time.

5. Uyilo lwesakhiwo esicinezelayo:

(1) Undoqo obhityileyo onobungqingqwa obukhulu uyakhethwa (uzinzo olungcono ngokwemilinganiselo);

(2) Ixabiso eliphantsi pp likhethwayo (kwiglasi efanayo yohlobo lwelaphu prepreg, umxholo we-resin ngokusisiseko awuchaphazeli ixabiso);

(3) Ubume beSymmetrical bukhethwa;

(4) Ukutyeba kwe-dielectric layer> ukutyeba kwe-foil yobhedu yangaphakathi x 2;

(5) Akuvumelekanga ukusebenzisa i-prepreg kunye nomxholo ophantsi we-resin phakathi kwe-1-2 iileyile kunye ne-n-1 / n iileya, ezifana ne-7628 × 1 (n linani leengqimba);

(6) Kwii-prepregs ezi-5 okanye ngaphezulu ezicwangciswe kunye okanye ubukhulu bomaleko we-dielectric bukhulu kune-25 mils, ngaphandle kweemaleko ezingaphandle kunye nezona zingaphakathi zisebenzisa i-prepreg, i-prepreg ephakathi itshintshwa yibhodi yokukhanya;

7 sebenzisa umxholo we-resin ephezulu prepreg , Njenge-2116, 1080;

8

(9) Akuvumelekanga ukusebenzisa iPP eyodwa kwiibhodi ezinobhedu lwangaphakathi ≥ 3oz.Ngokubanzi, i-7628 ayisetyenziswa.Iiprepregs ezininzi ezinomxholo ophezulu we-resin kufuneka zisetyenziswe, ezifana ne-106, 1080, 2116...

(10) Kwiibhodi ezininzi ezineendawo ezingenazo ubhedu ezingaphezu kwe-3"×3" okanye i-1"×5", i-prepreg ayisetyenziswa ngokubanzi kumaphepha omnye phakathi kweebhodi ezingundoqo.

6. Inkqubo yokucinezela

a.Umthetho wemveli

Indlela eqhelekileyo kukupholisa phezulu naphantsi kwibhedi enye.Ngexesha lokunyuka kweqondo lokushisa (malunga nemizuzu eyi-8), sebenzisa i-5-25PSI ukuthambisa iglue ehambayo ukuze uqhube ngokuthe ngcembe amaqamza kwincwadi yepleyiti.Emva kwemizuzu eyi-8, i-viscosity yeglue iye Yandisa uxinzelelo kuxinzelelo olupheleleyo lwe-250PSI ukukhama amaqamza akufutshane emphethweni, kwaye uqhubeke uqinisa i-resin yokwandisa isitshixo kunye nebhulorho yesitshixo esisecaleni imizuzu engama-45. ubushushu obuphezulu kunye noxinzelelo oluphezulu lwe-170℃, kwaye emva koko uyigcine kumandlalo wokuqala.Uxinzelelo lwangaphambili luyancipha malunga nemizuzu eyi-15 ukuzinzisa.Emva kokuba ibhodi iphuma ebhedini, kufuneka ibhakwe kwi-oven kwi-140 ° C kwiiyure ezingama-3-4 ukuqhubela phambili ukuqina.

b.Ukutshintsha kwe-resin

Ngokunyuka kweebhodi ezine ezine, i-laminate ye-multi-layer iye yatshintsha kakhulu.Ukuze kuthotyelwe le meko, i-epoxy resin formula kunye nokulungiswa kwefilimu nazo zitshintshiwe.Utshintsho olukhulu lwe-FR-4 epoxy resin kukunyusa ukubunjwa kwe-accelerator kunye nokongeza i-phenolic resin okanye ezinye ii-resin ukuze zingene kwaye zome i-B kwilaphu leglasi.-I-Satge epoxy resin inokwanda okuncinci kwisisindo se-molecular, kwaye iibhondi zecala zenziwe, okubangela ukuxinana okukhulu kunye ne-viscosity, okunciphisa ukusebenza kwakhona kwe-B-Satge kwi-C-Satge, kunye nokunciphisa izinga lokuhamba kwiqondo lokushisa eliphezulu kunye noxinzelelo oluphezulu. ., Ixesha lokuguqulwa linokunyuswa, ngoko lifanelekile kwindlela yokuvelisa inani elikhulu lokushicilela kunye neentlobo ezininzi zeeplati eziphezulu kunye ezinkulu, kunye noxinzelelo oluphezulu lusetyenziswa.Emva kokugqitywa koshicilelo, ibhodi enemigangatho emine inamandla angcono kune-epoxy resin yendabuko, efana ne-Dimensional stability, resistance resistance, kunye nokumelana ne-solvent.

c.Indlela yokucinezela ngobuninzi

Okwangoku, zonke zizixhobo ezinkulu zokwahlula iibhedi ezishushu nezibandayo.Kukho iitoti ezine ezivulekileyo kwaye zininzi ukuya kwishumi elinesithandathu.Phantse zonke zishushu ngaphakathi nangaphandle.Emva kwemizuzu eyi-100-120 yokuqina kwe-thermal, zityhalwa ngokukhawuleza kwibhedi yokupholisa ngaxeshanye., Uxinzelelo olubandayo luzinzile malunga ne-30-50min phantsi koxinzelelo oluphezulu, oko kukuthi, yonke inkqubo yokucinezela igqityiwe.

7. Ukusetha inkqubo yokucofa

Inkqubo yokucinezela inqunywe yimpawu ezisisiseko ze-Prepreg, i-glass transition yeqondo lokushisa kunye nexesha lokunyanga;

(1) Ixesha lokunyanga, iqondo lobushushu beglasi kunye nezinga lokufudumeza lichaphazela ngqo umjikelo wokucinezela;

(2) Ngokuqhelekileyo, uxinzelelo kwicandelo loxinzelelo oluphezulu lubekwe kwi-350±50 PSI;