Dab tsi yog TG hauv PCB board

HDI yog cov txheej txheem precision uas siv micro-dig muag thiab faus los ntawm kev siv thev naus laus zis thiab tsim cov txheej txheem los ua cov txheej txheem ntau txheej PCB boards hauv kev lag luam Circuit Court board.

TG hauv PCB cov khoom siv txhais tau tias kub tsis kam:

Qhov siab dua Tg taw tes, qhov siab dua qhov yuav tsum tau muaj thaum lub rooj tsavxwm raug txwv, thiab lub rooj tsavxwm suppressed yuav nyuaj thiab nkig, uas yuav cuam tshuam rau qhov zoo ntawm cov tshuab drilling rau qee yam hauv cov txheej txheem tom ntej.

Daim ntawv Tg yog siab tshaj 130 degrees, High-Tg feem ntau yog siab tshaj 170 degrees, thiab nruab nrab Tg yog siab tshaj 150 degrees. Tg ntawm lub substrate tau raug txhim kho, npog qhov kub tsis kam, noo noo tsis kam, tshuaj tiv thaiv, ceev ceev, thiab lwm yam, thiab kev ua haujlwm ntawm cov ntawv luam tawm yuav txuas ntxiv txhim kho.

Qhov siab dua TG tus nqi, qhov zoo dua qhov kub tsis kam ntawm lub rooj tsavxwm, tshwj xeeb tshaj yog nyob rau hauv cov txheej txheem tsis muaj cov hmoov lead-dawb tin spraying, daim ntawv thov ntawm Tg siab yog ntau dua.

Qhov siab dua TG tus nqi, qhov zoo dua cov cua sov ntawm daim ntawv, tshwj xeeb tshaj yog nyob rau hauv cov txheej txheem tsis muaj hlau lead, daim ntawv thov siab TG ntau dua.

Cov iav hloov pauv kub yog ib qho ntawm cov cim ntsuas kub ntawm cov molecular polymers siab. Siv cov iav hloov pauv kub raws li tus ciam teb, cov polymers nthuav tawm cov khoom sib txawv ntawm lub cev: hauv qab lub iav hloov kub, cov khoom siv polymer yog cov khoom siv molecular; saum lub iav hloov pauv kub, cov khoom siv polymer yog roj hmab.

Los ntawm qhov pom ntawm daim ntawv thov engineering, lub iav hloov pauv kub yog qhov siab tshaj plaws ntawm engineering molecular compound plastics thiab qis qis ntawm daim ntawv thov roj hmab lossis elastomer.

Nrog rau txoj kev loj hlob sai ntawm kev lag luam hluav taws xob, tshwj xeeb tshaj yog kev tsim cov khoom siv hluav taws xob uas sawv cev los ntawm cov khoos phis tawj, kev txhim kho cov haujlwm siab thiab ntau txheej txheej yuav tsum muaj cov ntaub ntawv PCB substrate kom muaj cua sov siab dua, uas yog qhov tseem ceeb lav.

Kev tshwm sim thiab kev vam meej ntawm high-density mounting technology sawv cev los ntawm SMT thiab CMT yuav tsum tau hais tias lub PCB muaj ib tug me me aperture, meej xov thiab thinning thiab kev txhawb los ntawm high kub kuj ntawm lub substrate yog ntau thiab ntau inseparable. .

Kub tsis kam 2113 tus nqi.

Lub ntsiab lus Tg qhia tau hais tias qhov siab dua qhov yuav tsum tau muaj ntawm cov ntawv hlau thaum nias lub 5261, qhov siab dua qhov sib piv thiab qhov brittleness ntawm 1653, uas yuav cuam tshuam qhov zoo ntawm cov tshuab drilling (yog tias muaj) hauv cov txheej txheem tom ntej thiab cov khoom hluav taws xob tshwj xeeb thaum siv rau qee yam. xwm.

Qhov zoo tib yam Tg ntawm daim ntawv yog siab tshaj 130 degrees, High-Tg feem ntau yog siab dua 170 degrees, qhov nruab nrab thiab ib txwm Tg yog siab tshaj 150 degrees, lub Tg ntawm lub substrate tau nce, lub tshav kub kuj ntawm lub board luam ntawv, noo noo. tsis kam, tshuaj tiv thaiv, thiab stability. Cov yam ntxwv xws li kev sib deev yuav loj hlob thiab txhim kho.

Daim ntawv thov

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, kev txhim kho kev ua haujlwm siab thiab ntau txheej txheej yuav tsum tau ua kom muaj cua sov ntau dua ntawm cov khoom siv hluav taws xob hauv PCB raws li qhov tseem ceeb lav. Qhov tshwm sim thiab kev vam meej ntawm high-density mounting technology sawv cev los ntawm SMT thiab CMT ua rau PCB ntau thiab ntau inseparable los ntawm kev txhawb siab kub tsis kam ntawm substrate nyob rau hauv cov nqe lus ntawm lub qhov taub, meej thiab ceev faj circuitization, thiab thinning.

Yog li, qhov sib txawv ntawm qhov sib txawv ntawm FR-4 thiab siab Tg FR-4 yog lub zog txhua yam, qhov ruaj khov, ruaj khov, adhesiveness, dej nqus, thermal decomposition khoom ntawm cov khoom hauv lub xeev kub, tshwj xeeb tshaj yog thaum rhuab tom qab absorbing. ya raws. Muaj qhov sib txawv ntawm ntau yam kev ua haujlwm xws li thermal expansion thiab thermal expansion. Qhov saum npoo ntawm cov khoom siab Tg yog zoo dua li cov khoom siv PCB substrate. Nyob rau hauv xyoo tas los no, tus naj npawb ntawm cov neeg siv khoom uas xav tau kev tsim khoom ntawm Tg Circuit Court boards tau nce ntau xyoo.

1. Qhov kub ntawm lub substrate los ntawm cov khoom molten rubbery kua yog hu ua Tg point, uas yog lub melting point.

2. Qhov siab dua Tg taw tes, lub sij hawm ntau dua rau lub phaj yuav tsum tau nias, thiab lub nplhaib nias yuav nyuaj thiab nkig, uas yuav cuam tshuam rau qhov zoo ntawm cov tshuab drilling (yog tias muaj) hauv cov txheej txheem tom ntej thiab hluav taws xob. lub zog thaum siv rau ib qho twg. Qhov tshwj xeeb ntawm kev sib deev.

3. Tg taw tes yog qhov siab tshaj plaws kub (degree) uas lub substrate tswj rigidity. Qhov ntawd yog hais tias, cov khoom siv PCB zoo tib yam tsis yog tsuas yog softens, deforms, melts thiab lwm yam tshwm sim ntawm qhov kub thiab txias, tab sis kuj qhia qhov poob sai ntawm cov khoom siv hluav taws xob thiab hluav taws xob tshwj xeeb.

4. Daim ntawv Tg zoo tib yam yog siab dua 130 degrees, High-Tg feem ntau yog siab dua 170 degrees, thiab qhov nruab nrab thiab ib txwm Tg yog ntau dua 150 degrees; Tg ntawm lub substrate nce, thiab cov cua kub tsis kam, noo noo tsis kam, tshuaj tsis kam, thiab tsis kam ntawm cov ntawv luam tawm. Cov yam ntxwv xws li kev ruaj khov yuav loj hlob thiab txhim kho. Qhov siab dua TG tus nqi, qhov zoo dua qhov ntsuas kub ntawm daim ntawv, tshwj xeeb tshaj yog nyob rau hauv cov txheej txheem tsis muaj cov hmoov lead-dawb tin, cov ntawv thov siab Tg ntau dua.

Beton feem ntau tsim cov khoom siv hluav taws xob ntau zaus, aluminium-based circuit boards, PCB circuit boards, LED circuit boards thiab multi-layer circuit boards, uas yog siv dav hauv aerospace, tiv thaiv teb chaws, kev sib txuas lus, khoom siv hauv tsev, kev tiv thaiv ib puag ncig, kev kho mob thiab kev lag luam. tswj teb. Tsis tas li ntawd, recycling Circuit Court board slats, corrosion potions, thiab tuaj yeem preset raws li daim duab schematic muab los ntawm tus neeg siv khoom, thiab muab cov qauv luam tawm.

Tg yog hais txog CORE iav hloov kub. Koj paub tias nws yog qhov softening kub ntawm cov ntaub ntawv. Tus nqi tg feem ntau yog siv rau cov boards siab. Nws yog resistant rau qhov tseem ceeb melting point tus nqi thaum lub sij hawm ntawm lamination. Kev nkag siab nkag siab tias nws yog qhov ntsuas kub tsis kam! Rau cov neeg ua haujlwm ua ntej, Tg tus nqi ntawm PCB xaiv tau txiav txim siab los ntawm qhov chaw ua haujlwm kub lossis keeb kwm yav dhau los ntawm cov khoom PCB koom nrog. Zoo li kev nkag siab zoo, TG tus nqi ntawm fr-4 daim ntawv yog nyob rau hauv qhov ntau ntawm 130-150. Lub fr-4 substrate uas pom tau tias tsim nyog yog los sau thiab yuav ob A-theem tub rog cov ntaub ntawv, Shengyi tg140 ​​thiab Kingboard tg130. Qhov tg tus nqi board Cov ntaub ntawv no tau siv dav hauv cov khoom siv hluav taws xob, tsheb hluav taws xob, kev tswj hwm kev lag luam, cov cuab yeej spectrograph, cov khoom siv hluav taws xob thiab lwm yam.