Mekhahlelo ea epoxy resin board

E le ho fumana phello e ntle ka ho fetisisa ea epoxy resin board, ho hlokahala litekanyo tse ling. Ho tse latelang, baetsi ba litsebi ba tla re fa kenyelletso e qaqileng. Tloo ‘me u ithute haholoanyane ka eona.

Sehlopha sa parameter ea letlapa la epoxy resin: parameter ea kamehla ea dielectric, tahlehelo ea dielectric, parameter ea boleng ba TG.

Letlapa la epoxy resin ke letlapa la PCB le nang le mahlakore a mabeli le entsoeng ka lesela la epoxy resin + lesela la khalase. Letlapa le atisang ho sebelisoa FR4 koporo-clad e na le kamano ea dielectric e lekanyelitsoeng ea 4.2-4.7. Mocheso ona oa dielectric o tla fetoha le mocheso. Boemong ba mocheso oa likhato tse 0-70, boholo ba phetoho bo ka fihla ho 20%. Phetoho ea kamehla ea dielectric e tla baka phetoho ea 10% ho lieha ha mohala, ‘me ha mocheso o phahame, ho lieha ho hoholo. Dielectric constant e tla boela e fetohe ka maqhubu a letshwao. Ha lebelo le phahame, ho na le li-dielectric constant tse nyane. Ka kakaretso, boleng ba khale ba dielectric constant ke 4.4. Dielectric kamehla e fetoha ka makhetlo a mangata joalokaha ho bontšitsoe Fig.

Dielectric constant (Dk, ε, Er) e lekanya lebelo leo matshwao a motlakase a tsamayang ka lona mahareng. Lebelo leo matshwao a motlakase a tsamayang ka lona le fapana ka tsela e fapaneng le sekwere mothapo wa dielectric constant. Ho theosa le dielectric constant, ho potlakisa phetiso ya letshwao. Ha re etseng papiso ea pono. Ho tšoana le ha u matha lebōpong la leoatle, ‘me botebo ba metsi bo koahela maqaqailana a hao. The viscosity ea metsi ke dielectric constant. Ha metsi a ntse a e-na le li-viscous haholoanyane, a phahamisa boemo ba dielectric kamehla, ‘me u matha butle.

Dielectric constant ha e bonolo haholo ho e lekanya kapa ho e hlalosa. Ha e amane feela le litšoaneleho tsa seaplane ka boeona, empa hape le mokhoa oa tlhahlobo, khafetsa ea liteko, le boemo ba thepa pele le nakong ea tlhahlobo. The dielectric constant e tla boela e fetohe ka ho fetoha ha mocheso. Lisebelisoa tse ling tse khethehileng li nahanela mocheso oa mocheso ho nts’etsopele. Mongobo hape ke ntho ea bohlokoa e amang dielectric constant, hobane dielectric constant of water ke 70, mme ho na le mongobo o monyane haholo. , e tla baka liphetoho tse kholo.

Tahlehelo ea dielectric ea epoxy resin sheet: tahlehelo ea matla ka har’a thepa e sireletsang ka lebaka la phello ea hysteresis ea dielectric conductance le dielectric polarization tlas’a phello ea tšimo ea motlakase. E boetse e bitsoa tahlehelo ea dielectric, e bitsoang tahlehelo ea dielectric. Tlas’a phello ea sebaka sa motlakase se fapanyetsanoang, sekhahla se tlatsetsang δ sa angle e kenyelletsoeng (power factor angle Φ) pakeng tsa phasor ea hona joale le phasor ea motlakase e phallang ka dielectric e bitsoa dielectric loss angle. Tahlehelo ea dielectric ea letlapa la epoxy resin hangata ke 0.02, mme tahlehelo ea dielectric e tla eketseha ka keketseho ea maqhubu.

TG boleng ba epoxy resin sheet: e tsejoang hape e le mocheso oa phetoho ea khalase, ka kakaretso ke 130 ℃, 140 ℃, 150 ℃, 170 ℃.