Chofunika ndi fr4 epoxy galasi fiber fiber

Kodi chuma ndi chiyani fr4 epoxy galasi fiber fiber? Kodi nkhani ndi epoxy utomoni bolodi? Ndi bwino kugwiritsa ntchito zinthu izi:

A. Ndi utomoni wa epoxy, womwe umatanthauza dzina la ma polima omwe amakhala ndi magulu a epoxy. Makamaka ndi oyenera atolankhani okhala ndi zinthu zochepa zowononga. Ili ndi kukana kwapadera kwa alkali ndipo imatha kukana kutentha kwa zidulo (kupatula hydrofluoric acid). Kufunika kwa utomoni wa epoxy pamsika wadzimbiri kwachepetsedwa kwambiri. Chifukwa chachikulu ndichakuti mapuloteni a polyester osakwaniritsidwa m’matumba osagwira dzimbiri apanga mofulumira ndipo pali mitundu yambiri. Msika wapakhomo umayambanso kumapeto kwa ma resin a polyester osakwaniritsidwa, motero epoxy resins Imodzi mwa mitundu yayikulu kwambiri ya utomoni wonyezimira. Makhalidwe apamwamba a utomoni wa epoxy ndi mphamvu yolumikizana kwambiri, kutsika pang’ono, kubwinyika kwazinthu zambiri, komanso mtengo wokwera. Kugwiritsa ntchito kutentha kwa utomoni wochiritsidwa kutentha sikupitirira 80 ° C;

B. Ndi wochiritsa wa fr4 epoxy galasi fiber fiber) epoxy resin. Pali mitundu ingapo ya amines, asidi anhydrides, mankhwala a utomoni ndi zina zotero. Mwa iwo, mankhwala amine ndiwo amagwiritsidwa ntchito kwambiri. Amatha kugawidwa m’mafuta amafuta, amino onunkhira komanso amine osinthidwa. Mitundu ingapo ya amine, monga ethylenediamine, m-phenylenediamine, xylylenediamine, polyamide, diethylenetriamine ndi mankhwala ena, ndi owopsa komanso onunkhiritsa, chifukwa chake pang’onopang’ono amagwiritsidwa ntchito ndi omwe alibe poizoni komanso otsika poizoni (monga: T31 , 590, C20, ndi zina) m’malo mwake, mankhwala ochiritsira amtunduwu amatha kuchiritsidwa ngakhale pansi pamadzi pamtsinje wonyowa, motero anthu akumvetsera kwambiri ndikutamanda;

C. Ndi fr4 epoxy galasi fiberboard yopopera. Utomoni wa epoxy nthawi zambiri umasungunuka ndi zopopera zosagwira monga ethanol, acetone, benzene, toluene, xylene, ndi zina zotero. Zosungunulira ziwiri zopanda ntchitozi zitha kusakanizidwa ndikugwiritsidwa ntchito, nthawi zina kuti muchepetse kuchiritsa zotsekemera zothandizanso monga propylene oxide butyl ether, propylene oxide phenyl ether, polyglycidyl ether, ndi ena amagwiritsidwanso ntchito pochepetsa mankhwala, kuti achepetse pores ndi ming’alu;

D. Ndi pulasitiki komanso wothandizira zovuta za fr4 epoxy galasi fiberboard. Yosavuta epoxy utomoni ndi Chimaona pambuyo kuchiritsa, ndipo ali amadza amadza kulimba, kupinda mphamvu ndi kutentha kukana. Ma plasticizers ndi ma tougheners amagwiritsidwa ntchito kwambiri kupanga Resin kumawonjezera mapulasitiki, kumapangitsa kulimba, kumawonjezera kukhotetsa mphamvu ndikukhala kolimba;

E. Ndimadzaza, ufa, magulu ophatikizika, ophatikizika, komanso magalasi amatchulidwa kuti fillers. Kuphatikiza ma filler oyenera kumachepetsa mtengo wazogulitsazo ndikusintha magwiridwe ake. Kuchulukitsa kwa guluu nthawi zambiri kumakhala utomoni Kuchuluka kwa 20-40% (kulemera), kuchuluka kwake kumatha kukhala kochulukirapo pokonzekera putty, nthawi zambiri kumatha kukhala kawiri kapena kanayi kuchuluka kwa utomoni, ufa womwe amagwiritsidwa ntchito kwambiri ndi ufa wa quartz, porcelain ufa, kuphatikiza pa ufa wa graphite, ufa wobiriwira wobiriwira wa Rock, talcum ufa, mica ufa, ndi zina zambiri.