Yuav ua li cas tiv thaiv epoxy board los ntawm kev tawg

Epoxy board yog cov khoom siv hluav taws xob ua haujlwm siab, uas tseem hu ua epoxy iav fiber board, epoxy phenolic laminated iav ntaub board thiab lwm yam. Lub epoxy board feem ntau yog ua los ntawm: iav fiber ntau daim ntaub yog sib koom nrog epoxy resin thiab ua los ntawm cua sov thiab siab, yog li nws muaj kev ua tau zoo heev thiab ntau yam zoo. Thiab nws tuaj yeem qhia nws tus yam ntxwv hauv txhua qhov chaw kub.

Piv txwv li, nyob rau hauv nruab nrab kub, nws muaj peev xwm qhia tau nws cov neeg kho tshuab ua hauj lwm zoo heev; nyob rau hauv ib puag ncig kub kub, nws tuaj yeem pom nws cov khoom hluav taws xob zoo heev. Yog li ntawd, vim hais tias ntawm cov yam ntxwv no, epoxy board yog heev haum rau high-kev rwb thaiv tsev structural qhov chaw nyob rau hauv hluav taws xob thiab hluav taws xob teb. Txhua yam tuaj yeem suav tau rau hauv ib kab lus, uas yog, epoxy boards muaj cov khoom siv hluav taws xob siab thiab dielectric, thiab muaj cua sov thiab noo noo zoo heev. Cov qib siab kub tsis kam ntawm epoxy board rwb thaiv tsev cov khoom yog qib F, uas yog, nws tuaj yeem tiv taus qhov kub ntawm 155 degrees, thiab nws tseem tuaj yeem tswj xyuas kev ua haujlwm ruaj khov hauv qhov kub siab.

Nws thickness yog feem ntau ntawm 0.5 thiab 100mm. Cov khoom siv feem ntau yog 1000mm * 2000mm. 1200 × 2400 epoxy board rwb thaiv tsev cov khoom yuav deform ntawm qhov kub ntawm 180 degrees, yog li nws feem ntau tsis siv nrog lwm yam hlau, txwv tsis pub nws yuav ua rau thermal deformation ntawm cov ntawv hlau.

Epoxy resin feem ntau ntsib cov xwm txheej hauv qab no thaum siv: EP casting, potting, molding thiab lwm yam yuav tawg tom qab kho los yog thaum lub sij hawm cia, ua rau cov khoom pov tseg. EP cov khoom tseem yuav qhia cov kab nrib pleb thaum lawv raug kub los yog hloov pauv kub thiab txias. Qhov loj dua, qhov ntxig ntxig ntau dua, thiab qhov yooj yim dua nws yog kom pom cov kab nrib pleb. Nws feem ntau ntseeg tau tias qhov no yog vim qhov kev ntxhov siab kho thiab qhov kub thiab txias yog siab dua lub zog ntawm cov khoom. Yog li ntawd, nws tsuas yog tsim nyog los ua kom lub zog ntawm EP kom tsis txhob tawg. Tab sis lub zog siab EP zoo li muaj kev cuam tshuam qis dua. Kev ntxhov siab-kev coj tus yam ntxwv ntawm qhov chaw (xws li cov khoom siv nplaum, cov khoom siv sib xyaw ua ke, thiab lwm yam) ua los ntawm cov muaj zog EP feem ntau tawg sai sai thaum siv, tab sis qhov kev ntxhov siab uas lawv tau txais yog qis dua lub zog ntawm EP. Cov pob txha tawg yog brittle fracture kab. Nws yog hu ua low stress brittle fracture. Cov khoom siv kho mob EP yog cov khoom siv polymer nrog cov qib siab ntawm kev sib txuas thiab yog nkig.

Hais txog qhov toughening ntawm epoxy resin, vim tias cov roj hmab toughened epoxy resin system feem ntau cuam tshuam nrog cov qauv matrix thiab cov qauv roj hmab particle thaum lub sijhawm tawg, nws kuj tseem cuam tshuam rau lub xeev kev sib tshuam ntawm ob theem thiab qhov ntim feem ntawm cov khoom. theem. Lub toughening fluctuation yog tsuas yog txiav txim los ntawm lub toughness ntawm cov hais, lub uniform network saw ntev ntawm lub matrix, thiab kuj muaj feem xyuam rau lub interfacial adhesion thiab cov tshuaj qauv ntawm lub network saw nws tus kheej.