Indlela yokuphuhlisa iphepha eliphezulu le-halogen -free FR4 sheet
2022-08-26
I-Epoxy resin (EP) yi-resin ebalulekileyo ye-thermometry eneempawu ezibalaseleyo zoomatshini, ukusebenza kakuhle kokubopha, ukusebenza kwe-dielectric, ukumelana nobushushu, kunye nokuzinza kweekhemikhali; Iimpawu zisetyenziswa kakhulu kwiindawo zokwenza amaphepha e-FR4 , ii-coating, i-adhesives, i-electronics, kunye nezinto ezidityanisiweyo. Ipleyiti yayo yoxinzelelo lwelaphu leglasi isetyenziswa kakhulu kwiindawo ze-mechanical, electronics, izixhobo zombane, kunye nezinye iindawo ngenxa yamandla ayo aphezulu, ukusebenza ngamandla aphezulu, kunye nokumelana okuhle kobushushu. Nangona kunjalo, i-oxygen index ye-EP eqhelekileyo yi-19.8%, into enokutsha. Ke ngoko, indlela ephucula ngayo ukusebenza kwe-EP ethintela ilangatye itsale ingqalelo enkulu kubaphandi basekhaya nabangaphandle. Inkqubo ye-bromide epoxy resin idla ngokusetyenziselwa ukulungiselela iipleyiti zoxinzelelo lwelaphu ukuze kufezekiswe iziphumo ze-flame retardant. Nangona kunjalo, i-European Union yabhengeza ukuba ukususela ngoJulayi 2006, ukusetyenziswa kwe-bromine retardants kuyekile kwiimveliso ze-elektroniki. Ke ngoko, ukuguqulwa kwe-halogen-free flame retardation yephepha le-FR4 yindawo eshushu.
1. Uvavanyo
a) Izinto ezikrwada zoMfuniselo
I-Epoxy resin (EP): ibakala loshishino, elifumaneka ngokurhweba; i-phosphorous-containing flame retardant (i-DOPO epoxy resin): ibakala lemizi-mveliso, lifumaneka ngokurhweba; i-arhente yokunyanga i-DDS: ibakala lemizi-mveliso, elifumaneka ngokurhweba; umgqugquzeli: ibakala loshishino, elikhoyo ngokurhweba, iTythopine ekhoyo ngokurhweba: ibakala loshishino, iTianjin Damao Chemical Reagent Plant; iacetone: ibakala loshishino, China Petroleum Corporation Co., Ltd.; ilaphu leglasi elisicaba elilukiweyo: ibakala lemizi-mveliso, elifumaneka ngokurhweba; ilaphu leglasi elisebenza ngamandla aphezulu: ibakala lemizi-mveliso, lifumaneka ngokurhweba.
b) Ukulungiswa kwe Iphepha leFR4
i. Ukubuyiswa komlilo we-epoxy resin
Ngokomlinganiselo wefomula, yongeza i-epoxy resin kunye ne-toluene kwi-1000M L ibhotile yokutshisa izibuko ezintathu, fudumeza, uvuselele, ulinde ukuba ubushushu bunyuke ukuya kuma-80 ° C, yongeza i-phosphorous-equlethe i-flame retardant DOPO uhlobo lwe-epoxy resin kunye nomgqugquzeli, kunye ne-arhente yokunyusa, qhubeka nokunyuka ukuya kwi-110 ° C ukulinda i-toluene ukuba ibuyele, kwaye emva koko ibuyele kwimpendulo yokubuyisela i-2h ukulungiselela i-flame retardant epoxy resin adhesives.
ii. Ukulungiselela kwangaphambili ukuntywiliselwa
Iintlobo ezimbini zelaphu leglasi kunye neempawu ezilukiweyo ezisicaba kunye nezixhobo ezinamandla kakhulu zisetyenziswa njengezinto eziqinisiweyo, kwaye izincamathelisi ezilungiselelwe ngokuntywiliselwa zomiswa kwi-110 ~ 150 ° C ukulawula izalathisi zobugcisa ezintathu eziphambili zelaphu leglu: umxholo weglue, umxholo oguquguqukayo, kunye neempawu ezinyibilikayo Umxholo we-resin ulungiselelwe ukucwiliswa kwangaphambili kwezibonakaliso ezahlukeneyo, njengoko kuboniswe kwiThebhile 1.
Igama lesalathisi | Ixabiso lesalathisi | Ixabiso loVavanyo |
Umxholo weGlue/% | 38 ± 2 | 37.9 |
Isiqulatho seResin enyibilikayo/% | ≥90 | 95.1 |
Umxholo oguquguqukayo/% | ≤1.0 | 0.52 |
i. Ukulungiswa kwe-epoxy resin yeglasi yelaphu yelaphu lepleyiti yoxinzelelo
Ilaphu leglu elilungisiweyo ligqitywe ngokweemfuno zokutyeba, kwaye inkqubo yokucinezela eboniswe kwiThebhile 2 icinezelwe kwicompressor ye-thermal ukuze icinezelwe kwi-epoxy resin glass cloth layer.
Inqanaba loPhuhliso | Ukucofa ipharamitha | ||
Uxinzelelo lweyunithi / MPa | Ubushushu / ℃ | Ixesha / min | |
Ukutshisa | 1-2 | 100-120 | 30-40 |
Uxinzelelo olushushu | 7-9 | 170-180 | 120-150 |
Phola | 7-9 | Ukuphola ukuya kuma-70 ℃ | 30-60 |
a) Indlela yoVavanyo
Ngokomgangatho wesizwe we-GB/T 1030.2-2009 ukufudumeza kombane okuqinileyo kwi-resin yoshishino umaleko oqinileyo Icandelo lesi-2: Indlela yovavanyo yokulungiswa kwesampulu kunye novavanyo lokusebenza kwindlela yovavanyo.
2. Iziphumo neengxoxo
a) Isiphumo sokubuyiswa komlilo kumandlalo woxinzelelo kwipleyiti yokubuyiswa kokusebenza
Ilangatye-retardant uvavanyo yokusebenza le phosphorus elungisiweyo-eziqulathe epoxy resin glass ilaphu layer isetyenziselwa iinkcukacha. Iziphumo ziboniswe kwiThebhile 3.
Inokubonwa kwiThebhile 3 ukuba kwiphepha le-phosphorus-equkethe i-FR4, xa i-phosphorus mass score i-1.5%, inqanaba lokutshisa elichanekileyo lenkqubo lifikelela kwi-UL 94 V-0.
I-phosphorus-equlethe i-flame retardant yi-reactant flame retardant. Iqela eliqukethe i-phosphorus liya kwaziswa kwi-epoxy resin yokunyanga. Xa umaleko welaphu leglasi utshisiwe, iqela le-phosphorus livelisa iphosphate kwaye livelise i-polarizing phosphate kubushushu obuphezulu. Zombini i-phosphate kunye ne-polarizing phosphate zi-agents dehydrated ukuze i-polymer ikhutshwe ngokuthe ngqo kwaye ifakwe i-carbonized ukuphepha ukuveliswa kweegesi ezinokutsha. Ngelo xesha, i-coke layer yenziwe phezu kwe-epoxy resin. Kwelinye icala, Umoya kunye nobushushu bohlulwe kumphezulu we-epoxy resin ukuyithintela ukuba ingaqhubeki nokuvutha.
I-Phosphorus Mass Fraction /% | UL94 iNqanaba lokuVusa elithe nkqo |
0 | Ayikwazi ukufikelela ku-V - 2 |
1.0 | Ayikwazi ukufikelela ku-V - 2 |
1.5 | V - 0 |
2.0 | V - 0 |
2.5 | V - 0 |
b) Isiphumo se-flame retardant ekusebenzeni kwephepha le-FR4 fiberglass
Itheyibhile yesi-4 ithelekisa ukusebenza kweepleyiti zokucinezelwa kwelaphu leglasi elingatshintshwanga kunye nohlengahlengiso. Isampulu A kunye neSampuli B aziqikeleleki kwaye zilungisiwe iipleyiti zoxinzelelo lweglasi epoxy resin, ngokulandelelanayo. Kwitheyibhile, inqanaba lokutsha elithe nkqo kwisampulu ye-B yi-UL 94 V-0, kwaye amandla ayo okusolula, amandla okugoba, kunye namandla empembelelo angaphezulu kwesampulu A. Ukusebenza kwamalaphu eglasi epoxy resin alungiselelwe emva kokuguqulwa kuhle kakhulu. . Isizathu kukuba i-phosphorus-equkethe i-epoxy resin iqiniswe ngokwayo phantsi kwesenzo se-agent ephilisayo, yenza inethiwekhi yonxibelelwano oluxhunyiwe kunye ne-epoxy resin, kwaye akukho mfuduko kunye ne-exudation. Inkulu, ngoko ke ukusebenza okubanzi kungcono.
Hayi | Izinto uvavanyo | Unit | Isampulu A | Isampulu B | |
1 | I-Flame Retardant | Nqanaba | Ayikwazi ukufikelela ku-V - 2 | V - 0 | |
2 | Umaleko othe nkqo ukuya kukuqina okugoba | eqhelekileyo 90 ± 2 | MPa | 521 | 631 |
516 | |||||
3 | Umaleko othe nkqo ukugoba imodyuli elastiki | eqhelekileyo 90 ± 2 | GPA | 24.1 | 27.2 |
20.9 | 24.5 | ||||
4 | Umaleko onxuseneyo ukuya kukuqina kwempembelelo | nkqo | KJ / m2 | 101 | 107 |
Horizontal | 60 | 68 | |||
5 | Amandla Amandla | MPa | 386 | 523 | |
6 | Umaleko onxuseneyo-uku-ukusika ubukhulu | MPa | 49 | 51 | |
7 | Ukuxhathisa kwevolumu | Ω · m | 8.9*10^15 | 9.2*10^15 | |
8 | Umphezulu kwakhona | Ω | 4.7*10^15 | 6.7*10^15 | |
9 | Umaleko othe nkqo kumandla ombane | KV / mm | 15.6 | 18.5 | |
10 | Umaleko onxuseneyo kumbane wokuqhekeka | KV | I-70 | I-90 | |
11 | Isalathisi sokuxhathisa umbane | V | 350 | 600 | |
c) Isiphumo senkqubo yoxinzelelo lweplate yomaleko ekusebenzeni
Ukongeza kuxinzelelo lwe-laminar, ngaphandle kwezinto eziluhlaza kunye neemveliso ezigqityiweyo ezigqityiweyo, impembelelo yokucinezela imilinganiselo yenkqubo (iqondo lobushushu, uxinzelelo, ixesha) kwipleyiti yoxinzelelo lwamaleko nayo inempembelelo enkulu. Kwizinto ezifanelekileyo zokuntywiliselwa kwangaphambili, ukuba inkqubo yokucinezelwa ayifanelekanga, iya kuvelisa iipleyiti zoxinzelelo ezikumgangatho ophantsi. Ubushushu boxinzelelo lobushushu bunempembelelo enkulu kumgangatho kunye nesivuno. Kufuneka ibekwe ngokwefomula yoshishino lweglue ye-resin kunye nobushushu bokuphilisa; uxinzelelo kufuneka lubekwe ngokweentlobo zezinto eziphuculweyo kunye ne-adhesives; I-insulation kunye nexesha logcino loxinzelelo ngundoqo Kwilaphu leglasi yeepleyiti zoxinzelelo lwelaphu, ngokuqhelekileyo yi-10 ~ 15mm / min.
2. Isiphelo
a) Iphepha le-FR4 elilungisiweyo linomsebenzi ogqwesileyo, kwaye inqanaba lokubuyiswa komlilo lifikelela ku-UL94-V0;
b) I-DOPO ebuyisela idangatye yohlobo lwe-epoxy resin inokuphucula ngokubonakalayo ukusebenza kwedangatye le-plate yoxinzelelo. Xa umxholo we-phosphorus u-1.5%, i-plate ye-layer pressure plate ifikelela ku-UL94-V0;
c) Xa i-high-mechanical performance glasscloth yongezwa, iimpawu zomatshini zomaleko zinokuphuculwa.
