A halin yanzu, akwai nau'o'in laminate da yawa da aka yi amfani da su a cikin ƙasata, kuma halayensu sune kamar haka: nau'o'in laminates na tagulla, ilimin laminates na tagulla, da hanyoyin rarraba laminates masu tagulla.Kullum, bisa ga daban-daban ƙarfafa kayan da jirgin, shi za a iya raba biyar Categories: takarda tushe, gilashin fiber zane tushe, composite tushe (CEM jerin), laminated Multi-Layer hukumar tushe da kuma musamman kayan tushe ( yumbu, karfe core. tushe, da sauransu).Idan an rarraba ta bisa ga mannen guduro da aka yi amfani da shi a cikin allo, CCI na gama gari na tushen takarda.Akwai: guduro phenolic (XPC, XxxPC, FR-1, FR-2, da dai sauransu), epoxy guduro (FE-3), polyester guduro da sauran iri.Gilashin fiber na fiber na yau da kullun tushe CCL yana da guduro epoxy (FR-4, FR-5), wanda a halin yanzu shine mafi yawan amfani da nau'in gilashin fiber tushe tushe.Bugu da ƙari, akwai wasu resins na musamman (gilashin fiber fiber, fiber polyamide, masana'anta maras amfani, da dai sauransu a matsayin ƙarin kayan): bismaleimide modified triazine resin (BT), polyimide resin (PI) , Diphenylene ether guduro (PPO), namiji Anhydride imine-styrene guduro (MS), polycyanate guduro, polyolefin guduro, da dai sauransu Dangane da harshen wuta retardant yi na CCL, shi za a iya raba biyu iri alluna: harshen wuta retardant (UL94-VO, UL94-V1) da kuma wadanda ba. flame retardant (UL94-HB) .A cikin shekaru ɗaya ko biyu da suka gabata, tare da ƙarin girmamawa kan kariyar muhalli, an raba sabon nau'in CCL wanda ba ya ƙunshi bromine daga CCL mai saurin wuta, wanda za a iya kira "harshen harshen wuta. CCL na baya-bayan nan.Tare da saurin haɓaka fasahar samfurin lantarki, akwai buƙatun aiki mafi girma don cCL.Saboda haka, daga rarrabuwa na CCL, an raba shi zuwa babban aikin CCL, ƙarancin dielectric akai-akai, babban juriya na zafi CCL (yawanci L na hukumar yana sama da 150 ° C), da ƙarancin haɓakar haɓakar thermal CCL (yawanci ana amfani da su akan). marufi substrates)) da sauran nau'ikan.Tare da ci gaba da ci gaba da ci gaba da fasahar lantarki, sabbin buƙatu suna ci gaba da sa gaba don kayan aikin bugu na katako, ta haka ne ke haɓaka ci gaba da haɓaka ka'idodin laminate na jan karfe.A halin yanzu, babban ma'auni na kayan aikin substrate sune kamar haka
① Ƙididdiga ta ƙasa: Matsayin ƙasata na ƙasa da ke da alaƙa da kayan ƙasa sun haɗa da GB/T4721-47221992 da GB4723-4725-1992.Ma'auni na laminates na jan karfe a Taiwan, Sin ita ce ma'aunin CNS, wanda aka tsara bisa ma'aunin JIS na Japan kuma an kafa shi a cikin 1983. saki.
② Matsayi na kasa da kasa: Ma'aunin JIS na Japan, ASTM na Amurka, NEMA, MIL, IPC, ANSI, UL misali, Standard Bs na Biritaniya, DIN Jamusanci, daidaitaccen VDE, NFC na Faransa, ma'aunin UTE, ma'aunin CSA na Kanada, ma'aunin Australiya AS, ƙimar FOCT na tsohuwar Tarayyar Soviet, daidaitattun IEC na duniya, da dai sauransu;masu samar da kayan ƙirar PCB, gama gari kuma ana amfani da su sune: ShengyiKingboard International, da dai sauransu.
Gabatarwar hukumar da'ira ta PCB: bisa ga matakin ingancin iri daga ƙasa zuwa babba, an raba shi kamar haka: 94HB-94VO-CEM-1-CEM-3-FR-4
Cikakken ma'auni da amfani sune kamar haka:
94HB
: kwali na yau da kullun, ba mai hana wuta ba (mafi ƙanƙanta abu, mutuƙar naushi, ba za a iya amfani da shi azaman allon wuta ba)
94V0: kwali mai ɗaukar wuta (mutu naushi)
22F
: Guda rabin gilashin fiber allo (mutu naushi)
CEM-1
: Allolin fiberglass mai gefe guda (dole ne a hako shi ta kwamfuta, ba a buga ba)
CEM-3
: Fuskar fiberglass mai gefe guda biyu (sai dai kwali mai gefe biyu, wanda shine mafi ƙasƙanci-karshen abu don bangarori biyu. Sauƙaƙan bangarori biyu na iya amfani da wannan abu, wanda shine 5 ~ 10 yuan / murabba'in mita mai rahusa fiye da FR-4)
FR-4:
Allon fiberglass mai gefe biyu
1. Ana iya rarraba kaddarorin masu kare harshen wuta zuwa nau'i hudu: 94VO-V-1-V-2-94HB
2. Prepreg: 1080=0.0712mm, 2116=0.1143mm, 7628=0.1778mm
3. FR4 CEM-3 duk wakiltar alluna, fr4 gilashin fiber allo ne, kuma cem3 wani nau'in kayan aiki ne.
4. Ba tare da halogen ba yana nufin abubuwan da ba su ƙunshi halogens ba (kasuwanci irin su fluorine, bromine, iodine, da dai sauransu), saboda bromine zai haifar da iskar gas mai guba lokacin da aka kone, wanda ke buƙatar kariya ta muhalli.
5. Tg shine yanayin canjin gilashin, wanda shine wurin narkewa.
6. Dole ne allon kewayawa ya zama mai jurewa harshen wuta, ba zai iya ƙonewa a wani zafin jiki ba, yana iya yin laushi kawai.Matsayin zafin jiki a wannan lokacin ana kiransa zazzabin canjin gilashin (Tg point), kuma wannan ƙimar tana da alaƙa da tsayin daka na allon PCB.
Menene high Tg?PCB kewaye hukumar da fa'idar yin amfani da high Tg PCB: Lokacin da yawan zafin jiki na high Tg buga kewaye hukumar tashi zuwa wani kofa, da substrate zai canza daga "gilashin jihar" zuwa "roba jihar", da kuma zazzabi a wannan lokaci ake kira. zazzabi gilashin canjin allo (Tg).Wato, Tg shine mafi girman zafin jiki (° C.) wanda a cikinsa ya kasance mai ƙarfi.Wato, talakawa PCB substrate kayan za su ci gaba da laushi, nakasawa, narke da sauran al'amura a karkashin high zafin jiki, kuma a lokaci guda, shi kuma zai nuna wani kaifi ƙi a cikin inji da lantarki Properties, wanda zai shafi rayuwar sabis. samfurin.Gabaɗaya, allon Tg yana 130 Sama da ℃, babban Tg gabaɗaya ya fi 170 ° C, matsakaicin Tg kuma ya fi 150 ° C;yawanci allon PCB da aka buga tare da Tg ≥ 170 ° C ana kiran shi babban allon buga Tg;Tg na substrate yana ƙaruwa, kuma zafin zafi na katakon da aka buga, Siffofin irin su juriya na danshi, juriya na sinadarai, da kwanciyar hankali duk suna inganta da ingantawa.Mafi girman darajar TG, mafi kyawun juriya na zafin jiki na jirgi, musamman ma. a cikin tsarin kyauta na gubar, akwai ƙarin aikace-aikace na babban Tg;high Tg yana nufin babban juriya na zafi.Tare da m ci gaban da Electronics masana'antu, musamman lantarki kayayyakin wakilta kwakwalwa, suna tasowa zuwa high ayyuka da kuma high Multi-Yadudduka, wanda na bukatar mafi girma zafi juriya na PCB substrate kayan a matsayin abin da ake bukata.Haɓaka da haɓaka fasahar haɓakar haɓakar haɓakar haɓakar haɓakar haɓakar haɓakar haɓakawa da SMT da CMT ke wakilta sun sanya PCB daɗaɗawa ba za su iya rabuwa da goyan bayan babban juriya na juriya ba dangane da ƙaramin buɗe ido, layi mai kyau, da bakin ciki.Saboda haka, bambanci tsakanin janar FR-4 da high Tg: a high zafin jiki, musamman a karkashin zafi bayan danshi sha, da inji ƙarfi, girma da kwanciyar hankali, adhesiveness, ruwa sha, thermal bazuwar, thermal fadada, da dai sauransu na kayan Akwai bambance-bambancen karatu. tsakanin yanayi biyu, da kuma high Tg kayayyakin ne a fili mafi alhẽri daga talakawa PCB kewaye hukumar substrate kayan.
Lokacin aikawa: Afrilu-26-2023