Tam sim no, muaj ntau ntau hom tooj liab-clad laminates dav siv nyob rau hauv kuv lub teb chaws, thiab lawv cov yam ntxwv yog raws li nram no: hom tooj liab-clad laminates, kev paub txog tooj liab-clad laminates, thiab kev faib cov txheej txheem ntawm tooj liab-clad laminates.Feem ntau, raws li cov ntaub ntawv sib txawv ntawm lub rooj tsavxwm, nws tuaj yeem muab faib ua tsib pawg: daim ntawv puag, iav fiber ntau daim ntaub puag, sib xyaw puag (CEM series), laminated multi-layer board puag thiab cov khoom siv tshwj xeeb (ceramic, hlau core. base, thiab lwm yam).Yog tias nws raug cais raws li cov nplaum nplaum uas siv rau hauv lub rooj tsavxwm, cov ntawv ua raws li CCI.Muaj: phenolic resin (XPC, XxxPC, FR-1, FR-2, thiab lwm yam), epoxy resin (FE-3), polyester cob thiab lwm yam.Cov iav fiber ntau hauv paus CCL muaj epoxy resin (FR-4, FR-5), uas yog tam sim no siv ntau hom iav fiber ntau daim ntaub puag.Tsis tas li ntawd, muaj lwm cov resins tshwj xeeb (iav fiber ntau daim ntaub, polyamide fiber ntau, tsis-woven npuag, thiab lwm yam raws li cov ntaub ntawv ntxiv): bismaleimide hloov triazine resin (BT), polyimide resin (PI), Diphenylene ether resin (PPO), txiv neej anhydride imine-styrene resin (MS), polycyanate resin, polyolefin resin, thiab lwm yam Raws li cov nplaim retardant kev ua tau zoo ntawm CCL, nws muaj peev xwm muab faib ua ob hom boards: nplaim retardant (UL94-VO, UL94-V1) thiab tsis- nplaim taws retardant (UL94-HB).Nyob rau hauv ib los yog ob lub xyoos dhau los, nrog rau qhov tseem ceeb ntawm kev tiv thaiv ib puag ncig, ib hom tshiab ntawm CCL uas tsis muaj bromine tau raug cais los ntawm cov nplaim hluav taws kub-retardant CCL, uas tuaj yeem hu ua "cov nplaim ntsuab. - retardant CCL".Nrog rau txoj kev loj hlob sai ntawm cov khoom siv hluav taws xob, muaj kev ua tau zoo dua rau cCL.Yog li, los ntawm kev faib ua haujlwm ntawm CCL, nws tau muab faib ua kev ua haujlwm dav dav CCL, qis dielectric tas li CCL, siab kub tsis kam CCL (feem ntau L ntawm lub rooj tsavxwm yog siab dua 150 ° C), thiab qis thermal expansion coefficient CCL (feem ntau siv rau ntim substrates)) thiab lwm yam.Nrog rau kev txhim kho thiab kev vam meej ntawm kev siv tshuab hluav taws xob tsis tu ncua, cov kev xav tau tshiab tau muab tso rau yav tom ntej rau cov ntawv luam tawm cov ntaub ntawv substrate, yog li txhawb kev txhim kho txuas ntxiv ntawm tooj liab clad laminate qauv.Tam sim no, cov qauv tseem ceeb ntawm cov khoom siv substrate yog raws li hauv qab no
① Lub teb chaws tus qauv: kuv lub teb chaws cov qauv hauv teb chaws muaj feem xyuam rau cov ntaub ntawv substrate muaj xws li GB/T4721-47221992 thiab GB4723-4725-1992.Tus txheej txheem rau tooj liab clad laminates nyob rau hauv Taiwan, Tuam Tshoj yog CNS tus qauv, uas yog formulated raws li Japanese JIS tus qauv thiab tau tsim nyob rau hauv 1983. tso tawm.
② Cov qauv thoob ntiaj teb: Nyiv tus qauv JIS, American ASTM, NEMA, MIL, IPc, ANSI, UL txuj, British Bs txuj, German DIN, VDE txuj, Fabkis NFC, UTE txuj, Canadian CSA txuj, Australian txuj AS txuj, FOCT txuj ntawm yav dhau los Soviet Union, thoob ntiaj teb tus qauv IEC, thiab lwm yam .;Cov neeg muag khoom ntawm PCB tsim cov ntaub ntawv, feem ntau thiab siv tau yog: Shengyi \ Kingboard \ International, thiab lwm yam.
PCB Circuit Board Cov Khoom Taw Qhia: Raws li cov khoom lag luam qib zoo hauv qab mus rau siab, nws muab faib raws li hauv qab no: 94HB-94VO-CEM-1-CEM-3-FR-4
Cov ncauj lus kom ntxaws parameter thiab kev siv yog raws li nram no:
94 HB
: Ordinary cardboard, tsis fireproof (cov khoom qib qis tshaj, tuag xuas nrig ntaus, tsis tuaj yeem siv los ua lub hwj chim board)
94V0: nplaim retardant cardboard (tuag xuas nrig ntaus)
22 F
: Ib sab ib nrab iav fiber ntau pawg thawj coj saib (tuag xuas nrig ntaus)
CEM-1
: Ib leeg-sided fiberglass board (yuav tsum tau laum los ntawm lub computer, tsis punched)
CEM-3
: Ob chav sided semi-fiberglass board (tshwj tsis yog ob-sided cardboard, uas yog cov khoom siv qis tshaj plaws rau ob sab vaj huam sib luag. Yooj yim ob sab panels siv tau cov khoom no, uas yog 5 ~ 10 yuan / square meter pheej yig dua. FR-4)
Qauv TSIS MUAJ: FR-4
Ob chav sided fiberglass board
1. Kev faib tawm ntawm cov nplaim hluav taws xob tuaj yeem muab faib ua plaub hom: 94VO-V-1-V-2-94HB
2. Prepreg: 1080 = 0.0712mm, 2116 = 0.1143mm, 7628 = 0.1778mm
3. FR4 CEM-3 txhua tus sawv cev rau cov laug cam, fr4 yog iav fiber ntau pawg thawj coj saib, thiab CEM3 yog cov khoom sib xyaw
4. Halogen-dawb yog hais txog cov substrates uas tsis muaj halogens (cov khoom xws li fluorine, bromine, iodine, thiab lwm yam), vim hais tias bromine yuav tsim cov pa phem thaum hlawv, uas yuav tsum tau los ntawm kev tiv thaiv ib puag ncig.
5. Tg yog lub iav hloov kub, uas yog lub melting point.
6. Lub rooj tsav xwm hauv Circuit Court yuav tsum yog nplaim hluav taws, nws tsis tuaj yeem hlawv ntawm qhov kub thiab txias, nws tsuas yog muag muag xwb.Qhov ntsuas kub ntawm lub sijhawm no yog hu ua lub iav hloov pauv kub (Tg point), thiab tus nqi no cuam tshuam rau qhov ntev ntawm lub rooj tsavxwm PCB.
Tg siab yog dab tsi?PCB Circuit Board thiab qhov zoo ntawm kev siv siab Tg PCB: Thaum qhov kub ntawm high Tg luam ntawv Circuit Court board nce mus rau ib qho chaw pib, lub substrate yuav hloov los ntawm "iav xeev" mus rau "lub xeev roj hmab", thiab qhov kub ntawm lub sij hawm no yog hu ua. board iav hloov kub (Tg).Ntawd yog, Tg yog qhov kub siab tshaj (° C.) uas lub substrate tseem nruj.Qhov ntawd yog hais tias, cov ntaub ntawv zoo tib yam PCB substrate yuav txuas ntxiv muag, deform, yaj thiab lwm yam tshwm sim nyob rau hauv qhov kub thiab txias, thiab tib lub sijhawm, nws tseem yuav pom qhov poob qis hauv cov khoom siv hluav taws xob thiab hluav taws xob, uas yuav cuam tshuam rau kev ua haujlwm ntawm lub neej. cov khoom.Feem ntau, Tg board yog 130 Saum toj no ℃, qhov siab Tg feem ntau ntau dua 170 ° C, thiab qhov nruab nrab Tg yog ntau dua 150 ° C;Feem ntau cov PCB luam ntawv board nrog Tg ≥ 170 ° C yog hu ua lub siab Tg luam ntawv board;Tg ntawm lub substrate yog nce, thiab tshav kub tsis kam ntawm lub rooj tsavxwm luam ntawv, Nta xws li ya raws, tshuaj tsis kam, thiab stability yog tag nrho cov txhim khu kev qha thiab txhim khu kev qha.Qhov siab dua TG tus nqi, qhov zoo dua qhov kub ntawm lub rooj tsavxwm, tshwj xeeb tshaj yog nyob rau hauv cov txheej txheem tsis muaj txhuas, muaj ntau daim ntawv thov siab Tg;siab Tg hais txog kev kub siab ua haujlwm.Nrog rau kev loj hlob sai ntawm kev lag luam hluav taws xob, tshwj xeeb tshaj yog cov khoom siv hluav taws xob uas sawv cev los ntawm cov khoos phis tawj, tab tom txhim kho kev ua haujlwm siab thiab ntau txheej txheej, uas yuav tsum tau ua kom muaj cua sov ntau dua ntawm cov khoom siv hauv PCB raws li qhov yuav tsum tau ua ua ntej.Kev tshwm sim thiab kev loj hlob ntawm high-density mounting technologies sawv cev los ntawm SMT thiab CMT tau ua PCB ntau thiab ntau inseparable los ntawm kev txhawb siab kub tsis kam ntawm lub substrate nyob rau hauv cov nqe lus ntawm me me aperture, nplua kab, thiab thinning.Yog li ntawd, qhov sib txawv ntawm cov dav dav FR-4 thiab siab Tg: ntawm qhov kub thiab txias, tshwj xeeb tshaj yog nyob rau hauv tshav kub tom qab nqus dej noo, lub zog txhua yam, qhov ntev stability, adhesiveness, dej nqus, thermal decomposition, thermal expansion, thiab lwm yam ntawm cov khoom muaj qhov sib txawv. nruab nrab ntawm ob qhov xwm txheej, thiab cov khoom siab Tg yog qhov pom tseeb zoo dua li cov khoom siv PCB circuit board substrate.
Post lub sij hawm: Apr-26-2023