Soosaarayaasha tuubooyinka Epoxy waxay qeexayaan sifooyinka walxaha dahaarka ee kala duwan:

Waxaa jira noocyo badan oo ah alaabta daaha, kuwaas oo loo qaybin karo saddex qaybood: gaaska, dareeraha iyo adkaha. Qalabka gaaska sida caadiga ah loo isticmaalo waxaa ka mid ah hawada, nitrogen, iyo sulfur hexafluoride dahamiya filimada PC. Alaabta dareeraha ah ee dahaadhida inta badan waxa ka mid ah Saliida dahaadhiya macdanta iyo Saliida dahaadhka synthetic (saliid silicone, dodecylbenzene, polyisobutylene, isopropyl biphenyl, diarylethan, iwm.). Alaabta adag ee dahaarka waxaa loo qaybin karaa laba qaybood: organic iyo inorganic. Qalabka dahaarka adag ee dabiiciga ah waxaa ka mid ah rinjiga dahaadhka, xabagta dahaadhka, xaashida dahaadhka, alaabada fiber-ka, balaastikada, caagga, tuubooyinka varnished iyo dahaarka alaabada fiber-ka ah ee dahaaran, filimada korantada, alaabada isku dhafan iyo cajaladaha xabagta, laydhka korantada, iwm. waxaa ka mid ah mica, galaas, ceramics iyo alaabtooda. Taas bedelkeeda, walxaha dahaarka adag ayaa kala duwan oo ugu muhiimsan.

Qalabka korantada ee kala duwan ayaa leh shuruudo kala duwan oo loogu talagalay waxqabadka alaabta daaha. Qalabka dahaarka ee qalabka korantada-sare sida matoorada-voltage-ka sare iyo fiilooyinka korantada-sare ayaa looga baahan yahay inay yeeshaan xoog burbursan oo hooseeya iyo luminta dielectric hoose. Qalabka korantada ee hooseeya waxay qaataan xoogga farsamada, dhererka nasashada, heerka caabbinta kulaylka, iwm. sida shuruudaha ugu muhiimsan.

Tilmaamaha macroscopic ee walxaha dahaarka sida guryaha korontada, guryaha kulaylka, guryaha farsamada, caabbinta kiimikada, caabbinta cimilada, caabbinta daxalka iyo sifooyinka kale waxay si dhow ula xiriiraan qaab-dhismeedka kiimikada iyo qaab-dhismeedka kelli. Qalabka dahaarka adag inorganic waxaa inta badan ka kooban Silicon, boron iyo oksaydhyada biraha kala duwan, inta badan qaab-dhismeedka ionic, feature ugu muhiimsan waa iska caabin kulaylka sare, heerkulka shaqada guud ahaan waa ka weyn yahay 180 ℃, xasilloonida wanaagsan, caabbinta gabow atmospheric, iska caabin ah guryaha kiimikada wanaagsan iyo waxqabadka gabowga muddada-dheer ee hoos yimaada ficilka beer koronto; laakiin jabsan sare, awood saameyn hoose, iska caabin cadaadis sare iyo xoogga cufan oo hooseeya; farsamo xumo. Qalabka dabiiciga ah guud ahaan waa polymers leh celcelis miisaan kelli ah oo u dhexeeya 104 iyo 106, kulaylkooda caabbinta ah ayaa inta badan ka hooseeya alaabta aan noolaha ahayn. Iska caabbinta kulaylka ee agabyada ay ku jiraan faraantiga udgoonka, heterocycles iyo walxaha ay ka midka yihiin silikoon, titanium, iyo fluorine ayaa ka sarreeya qalabka guud ee polymer-ka toosan.

Qodobbada muhiimka ah ee saameeya sifooyinka dielectric ee alaabta dahaadhka ah waa xoogga polarity molecular iyo content ee qaybaha polar. Khasaaraha joogtada ah ee dielectric iyo dielectric ee alaabta dabaysha ayaa ka sarreeya kuwa aan ahayn tiirarka, wayna fududahay in la dhajiyo ions wasakh ah si loo kordhiyo korantada oo loo yareeyo sifooyinka dielectric. Sidaa darteed, waa in fiiro gaar ah loo yeesho nadaafadda habka wax-soo-saarka ee alaabta dahaadhka ah si looga hortago wasakhowga. Dielectrics for capacitors waxay u baahan yihiin joogtayn dielectric sare si loo hagaajiyo sifooyinkooda gaarka ah.