Parizvino, kune marudzi akawanda emhangura-akapfeka laminates anoshandiswa zvakanyanya munyika yangu, uye maitiro avo ndeaya anotevera: mhando dzemhangura-akapfeka laminates, ruzivo rwemhangura-akapfeka laminates, uye classification nzira dzemhangura-akapfeka laminates.Kazhinji, zvichienderana neakasiyana ekusimbisa zvinhu zvebhodhi, inogona kupatsanurwa muzvikamu zvishanu: bepa base, girazi fiber jira base, composite base (CEM akatevedzana), laminated multi-layer board base uye yakakosha zvinhu base (ceramic, simbi musimboti. base, etc.).Kana iyo yakarongedzerwa maererano neinonamatira resin inoshandiswa mubhodhi, iyo yakajairwa bepa-based CCI.Kune: phenolic resin (XPC, XxxPC, FR-1, FR-2, nezvimwewo), epoxy resin (FE-3), polyester resin uye mamwe marudzi.Iyo yakajairika girazi faibha jira base CCL ine epoxy resin (FR-4, FR-5), inova ndiyo inonyanya kushandiswa mhando yegirazi fiber jira base.Mukuwedzera, kune mamwe masara anokosha (girazi fiber jira, polyamide faibha, jira risiri rakarukwa, nezvimwewo sezvimwe zvinhu): bismaleimide yakagadziridzwa triazine resin (BT), polyimide resin (PI) , Diphenylene ether resin (PPO), maleic anhydride imine-styrene resin (MS), polycyanate resin, polyolefin resin, etc. Maererano nekushanda kwemoto weCCL, inogona kugoverwa mumhando mbiri dzemapuranga: flame retardant (UL94-VO, UL94-V1) uye isiri- flame retardant (UL94-HB) .Mugore rimwe chete kana maviri rapfuura, nekunyanya kukoshesa kuchengetedzwa kwezvakatipoteredza, rudzi rutsva rweCCL rusina bromine rwakaparadzaniswa neCCL inopisa moto, iyo inogona kunzi "moto wegirini." -retardant CCL”.Nekukurumidza kusimudzira kwemagetsi chigadzirwa tekinoroji, kune yakakwirira kuita zvinodiwa zvecCL.Naizvozvo, kubva pachikamu chekushanda kweCCL, yakakamurwa kuita CCL, yakaderera dielectric inogara CCL, yakanyanya kupisa kupisa CCL (kazhinji iyo L yebhodhi iri pamusoro pe150 ° C), uye yakaderera yekupisa yekuwedzera coefficient CCL (inowanzo shandiswa pa kurongedza substrates)) nemamwe marudzi.Nekuvandudzwa uye kuenderera mberi kwehunyanzvi hwemagetsi, zvinodiwa zvitsva zvinogara zvichiiswa pamberi pezvakadhindwa bhodhi substrate zvinhu, nekudaro zvichikurudzira kuenderera mberi kwemhando yemhangura yakapfeka laminate.Parizvino, iwo makuru zviyero zve substrate zvinhu ndeaya anotevera
① chiyero chenyika: nyika yangu zviyero zvine chekuita ne substrate zvinhu zvinosanganisira GB/T4721-47221992 uye GB4723-4725-1992.Chiyero chemhangura dzakapfeka laminates muTaiwan, China ndiyo CNS chiyero, iyo yakagadzirwa zvichienderana neJapan JIS standard uye yakavambwa muna 1983.
② International standards: Japan's JIS standard, American ASTM, NEMA, MIL, IPc, ANSI, UL standard, British Bs standard, German DIN, VDE standard, French NFC, UTE standard, Canadian CSA standard, Australian standard AS, FOCT standard ye yaimbova Soviet Union, yepasi rose IEC mwero, zvichingodaro;vatengesi vePCB dhizaini zvinhu, zvakajairika uye zvinowanzoshandiswa ndezvi: Shengyi\Kingboard\International, nezvimwe.
PCB redunhu bhodhi zvinhu sumo: zvinoenderana nemhando yemhando kubva pasi kusvika kumusoro, yakakamurwa sezvinotevera: 94HB-94VO-CEM-1-CEM-3-FR-4
Iwo akadzama parameters uye mashandisiro ndeaya anotevera:
94HB
: Wakajairwa kadhibhodhi, kwete fireproof (iyo yakaderera giredhi zvinhu, kufa punching, haigone kushandiswa sebhodhi remagetsi)
94V0: kadhibhodhi rinodzosa moto (kufa kubaya)
22F
: Single-sided hafu yegirazi fiber board (fa punching)
CEM-1
: Single-sided fiberglass board (inofanira kudhirwa nekombuta, kwete kubaiwa)
CEM-3
: Kaviri-sided semi-fiberglass board (kunze kwekadhibhodhi rine mativi maviri, inova zvinhu zvakaderera-magumo kune mapaneru ane mativi maviri. Mapaneru akareruka ane mativi maviri anogona kushandisa chinhu ichi, icho chinodhura 5 ~ 10 yuan/square mita pane FR-4)
FR-4:
Kaviri-sided fiberglass board
1. Kukamurwa kwezvinhu zvinodzoreredza moto zvinogona kukamurwa kuita mhando ina: 94VO-V-1-V-2-94HB
2. Prepreg: 1080=0.0712mm, 2116=0.1143mm, 7628=0.1778mm
3. FR4 CEM-3 yese inomiririra mapuranga, fr4 igirazi fiber board, uye cem3 inhengo inoumbwa
4. Halogen-isina inoreva masubstrates asina halogens (zvinhu zvakadai sefluorine, bromine, iodine, nezvimwewo), nokuti bromine ichabudisa magasi ane chepfu kana yapiswa, iyo inodiwa nekuchengetedzwa kwezvakatipoteredza.
5. Tg ndiyo tembiricha yekushanduka kwegirazi, iyo inonyungudika.
6. Bhodhi redunhu rinofanira kunge risina moto, haigoni kupisa pane imwe tembiricha, inogona kungopfava.Iyo tembiricha yenzvimbo panguva ino inonzi tembiricha yegirazi (Tg point), uye kukosha uku kune hukama neiyo dimensional durability yePCB board.
Chii chinonzi high Tg?PCB redunhu bhodhi uye zvakanakira kushandisa yakakwira Tg PCB: Kana tembiricha yepamusoro Tg yakadhindwa yedunhu bhodhi ichikwira kune imwe chikumbaridzo, iyo substrate inoshanduka kubva ku "girazi mamiriro" kuenda ku "rubber state", uye tembiricha panguva ino inonzi. iyo bhodhi girazi shanduko yekushisa (Tg).Kureva kuti, Tg ndiyo tembiricha yepamusoro (° C.) apo substrate inoramba yakasimba.Izvi zvinoreva kuti, zvakajairwa PCB substrate zvinhu zvicharamba zvichipfava, kukanganisa, kunyunguduka uye zvimwe zviitiko pasi pekupisa kwakanyanya, uye panguva imwecheteyo, icharatidza kuderera kwakanyanya kwemakina uye magetsi zvivakwa, izvo zvinokanganisa hupenyu hwebasa. chigadzirwa.Kazhinji, Tg board i130 Pamusoro ℃, iyo Tg yakakwira inowanzopfuura 170 ° C, uye yepakati Tg yakakura kupfuura 150 ° C;kazhinji PCB yakadhindwa bhodhi neTg ≥ 170 ° C inonzi yakakwirira Tg yakadhindwa bhodhi;iyo Tg ye substrate inowedzera, uye kupisa kwekushisa kwebhodhi rakadhindwa, Zvinhu zvakadai sekudzivirira unyoro, kupikisa kwemakemikari, uye kugadzikana zvose zvinowedzerwa uye zvinovandudzwa.Iyo yakakwirira yeTG kukosha, zviri nani kupikisa kwekushisa kwebhodhi, kunyanya. mune inotungamira-isina maitiro, kune akawanda maapplication epamusoro Tg;high Tg inoreva kupisa kwakanyanya.Nekukurumidza kusimukira kweindasitiri yemagetsi, kunyanya zvigadzirwa zvemagetsi zvinomiririrwa nemakomputa, zviri kusimukira kusvika pakushanda kwepamusoro uye yakakwira akawanda-matanho, izvo zvinoda yakakwirira kupisa kupisa kwePCB substrate zvinhu sechinhu chinodiwa.Kubuda nekusimudzirwa kwepamusoro-density mounting technologies inomiririrwa neSMT neCMT yakaita kuti PCB iwedzere uye isingagoni kupatsanurika kubva pakutsigirwa kwekupisa kwekupisa kwe substrate maererano nekuvhura kuduku, mutsara wakanaka, uye kuonda.Naizvozvo, musiyano uripo pakati peyakajairwa FR-4 uye yakakwira Tg: pakupisa kwakanyanya, kunyanya pasi pekupisa mushure mekunyura kwehunyoro, iyo mechanical simba, dimensional kugadzikana, adhesiveness, kutorwa kwemvura, kuparara kwekupisa, kuwedzera kwemafuta, nezvimwe zvezvinhu Pane misiyano. pakati pemamiriro maviri aya, uye yakakwirira Tg zvigadzirwa zviri pachena zviri nani pane zvakajairwa PCB redunhu bhodhi substrate zvinhu.
Nguva yekutumira: Kubvumbi-26-2023