FR4 ibhodi epoxy ibhodi

Ibhodi ye-epoxy ye-FR4 Ikwabizwa ngokuba yi epoxy glass fiber board, epoxy phenolic laminated glass elaphu board, imodeli 3240, epoxy resin ngokubanzi ibhekisa kwikhompawundi yepolymer ephilayo equlathe amaqela amabini okanye ngaphezulu epoxy kwimolekyuli, ngaphandle nje abambalwa, ubunzima babo bemolekyuli abukho phezulu. . Isakhiwo se-molecular ye-epoxy resin sibonakaliswe kubukho bamaqela e-epoxy asebenzayo kwikhonkco le-molecular chain, kwaye amaqela e-epoxy anokufumaneka ekupheleni, phakathi okanye kwi-cyclic isakhiwo se-molecular chain. Ngenxa yamaqela e-epoxy asebenzayo kwisakhiwo se-molecular, banokudibaniswa kunye neentlobo ezahlukeneyo ze-agents zokunyanga ukwenza iipolymers ezingenayo kunye ne-infusible kunye nesakhiwo senethiwekhi yeendlela ezintathu.

Iimpawu zoSetyenziso:

1. Iifomu ezahlukeneyo. Uluhlu olubanzi lweereyini, ii-arhente zokunyanga, kunye neenkqubo zokulungisa ziyafumaneka ukuze zilungele zonke iimfuno zefomu yesicelo, ukusuka kwi-viscosity ephantsi kakhulu ukuya kwindawo ephezulu yokunyibilika.

2. Kulula ukunyanga. Ngokusebenzisa iindlela ezahlukeneyo zokunyanga, iinkqubo ze-epoxy resin zinokunyangeka kuluhlu lobushushu obuphakathi kwe-0 ukuya kwi-180 °C.

3. Ukubambelela okuqinileyo. Ubukho bepolar hydroxyl kunye neebhondi ze-ether ezikwitsheyini yemolekyuli ye-epoxy resin iyenza ibe nokuncamathela okuphezulu kwizinto ezahlukeneyo. Iireyini ze-epoxy zine-shrinkage ephantsi xa zinyangwa kwaye zenza uxinzelelo oluncinci lwangaphakathi, olukwanegalelo ekuphuculeni amandla okubambelela.

4. Ukuncipha okuphantsi. Ukusabela kwe-epoxy resin kunye ne-agent ephilisayo esetyenzisiweyo iqhutyelwa ngokuphendula ngokuthe ngqo kongezwa okanye i-polymerization yokuvula i-ring yamaqela e-epoxy kwi-molecule ye-resin, ngaphandle kokukhululwa kwamanzi okanye ezinye iimveliso eziguqukayo. Babonisa i-shrinkage ephantsi kakhulu (ngaphantsi kwe-2%) ngexesha lokunyanga xa kuthelekiswa ne-unsaturated polyester resins kunye ne-phenolic resins.

Iimpawu zoomatshini. Inkqubo ye-epoxy resin ephilisiweyo ineempawu ezintle kakhulu zoomatshini.