FR4 guddiga epoxy board

FR4 guddiga epoxy board waxaa sidoo kale loo yaqaan guddiga fiber galaas epoxy, epoxy phenolic laminated guddiga maro galaas, model 3240, resin epoxy guud ahaan waxaa loola jeedaa xarunta polymer organic ka kooban laba ama in ka badan kooxaha epoxy ee molecule ah, marka laga reebo dhowr ah, ay mass molecular ma aha sare. . Qaab dhismeedka molecular ee resin epoxy waxaa lagu gartaa joogitaanka kooxaha epoxy firfircoon ee silsiladda molecular, iyo kooxaha epoxy waxay ku yaalliin dhamaadka, qaab dhismeedka dhexe ama wareegga silsiladda kelli. Sababtoo ah kooxaha epoxy-ga firfircoon ee qaab-dhismeedka molecular, waxay isku-dhafan karaan noocyo kala duwan oo wakiilada daaweynta si ay u sameeyaan polymers aan la milmi karin oo aan la daboolin oo leh qaab-dhismeedka shabakad saddex geesood ah.

Tilmaamaha Codsiga:

1. Qaabab kala duwan. Noocyo kala duwan oo resins ah, wakiilada daawaynta, iyo hababka wax ka beddelka ayaa diyaar u ah inay ku habboonaadaan dhammaan shuruudaha foomamka codsi kasta, oo u dhexeeya majiilayaal aad u hooseeya ilaa kuwa adag oo heer sare ah.

2. Fudud in lagu daweeyo. Iyada oo la adeegsanayo noocyo kala duwan oo dawooyin ah, nidaamyada resin epoxy waxaa lagu daweyn karaa heerkulka u dhexeeya 0 ilaa 180 ° C.

3. adhesion xoog leh. Jiritaanka hydroxyl polar iyo ether bonds ee ku jira silsiladda molecular ee resin epoxy waxay ka dhigaysaa inay yeelato ku dheggan walxo kala duwan. Xabagta Epoxy waxay leeyihiin hoos u dhac yar marka la daweeyo waxayna dhaliyaan cadaadis gudaha ah oo yar, taas oo sidoo kale gacan ka geysata hagaajinta xoogga adhesion.

4. Yaraynta hoose. Dareen-celinta xabagta epoxy-ga iyo wakiilka daawaynta ee la isticmaalo waxa lagu fuliyaa fal-celin toos ah oo dheeraad ah ama polymerization-ka furitaanka ee kooxaha epoxy-ga ee molecule resin-ka, iyada oo aan la sii dayn biyaha ama alaabada kale ee kacsan. Waxay muujiyaan hoos u dhac aad u hooseeya (in ka yar 2%) inta lagu jiro daawaynta marka la barbar dhigo resins polyester-ka aan dheregsanayn iyo resins phenolic.

1. Guryaha farsamada. Nidaamka cusbi ee bogsaday wuxuu leeyahay sifooyin farsamo oo aad u fiican.