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- Cyanate_ester abstract "Cyanate esters are chemical substances generally based on a bisphenol or novolac derivative, in which the hydrogen atom of the phenolic OH group is substituted by a cyanide group. The resulting product with an -OCN group is named a cyanate ester.Cyanate esters can be cured and postcured by heating, either alone at elevated temperatures or at lower temperatures in presence of a suitable catalyst. The most common catalysts are transition metal complexes of cobalt, copper, manganese and zinc. The result is a thermoset material with a very high glass-transition temperature (Tg) of up to 400 °C, and a very low dielectric constant, providing excellent long term thermal stability at elevated end use temperatures, very good fire, smoke and toxicity performance and specific suitability for printed circuit boards installed in critical electrical devices. This is also due to its low moisture uptake.This property, together with a higher toughness compared to epoxies, also makes it a valuable material in aerospace applications. For example the Lynx Mark II spaceplane is primarily made of carbon/cyanate ester.The chemistry of the cure reaction is a trimerization of three CN groups to a triazine ring. Because the starting material is a product with two cyanate groups the resulting structure is a 3D polymer network. Product properties can be finetuned by the choice of substituents in the bisphenolic compound. Bisphenol-A and novolac based cyanate esters are the major products, bisphenol-F and bisphenol-E are also used. The aromatic ring of the bisphenol can be substituted with an allylic group for improved toughness of the material. Cyanate esters can also be mixed with bismaleimides to form BT-resins or with epoxy resins to optimize the end use properties.".
- Cyanate_ester wikiPageID "13266445".
- Cyanate_ester wikiPageLength "2821".
- Cyanate_ester wikiPageOutDegree "23".
- Cyanate_ester wikiPageRevisionID "596151217".
- Cyanate_ester wikiPageWikiLink Allyl.
- Cyanate_ester wikiPageWikiLink BT-Epoxy.
- Cyanate_ester wikiPageWikiLink Bismaleimide.
- Cyanate_ester wikiPageWikiLink Bisphenol.
- Cyanate_ester wikiPageWikiLink Bisphenol-A.
- Cyanate_ester wikiPageWikiLink Bisphenol_A.
- Cyanate_ester wikiPageWikiLink Branching_(polymer_chemistry).
- Cyanate_ester wikiPageWikiLink Category:Cyanates.
- Cyanate_ester wikiPageWikiLink Category:Functional_groups.
- Cyanate_ester wikiPageWikiLink Chemical_substance.
- Cyanate_ester wikiPageWikiLink Curing_(chemistry).
- Cyanate_ester wikiPageWikiLink Cyanate.
- Cyanate_ester wikiPageWikiLink Cyanide.
- Cyanate_ester wikiPageWikiLink Dielectric_constant.
- Cyanate_ester wikiPageWikiLink Ester.
- Cyanate_ester wikiPageWikiLink Glass-transition_temperature.
- Cyanate_ester wikiPageWikiLink Glass_transition.
- Cyanate_ester wikiPageWikiLink Hydrogen.
- Cyanate_ester wikiPageWikiLink Lynx_(spacecraft).
- Cyanate_ester wikiPageWikiLink Maleimide.
- Cyanate_ester wikiPageWikiLink Polymer_network.
- Cyanate_ester wikiPageWikiLink Printed_circuit_board.
- Cyanate_ester wikiPageWikiLink Relative_permittivity.
- Cyanate_ester wikiPageWikiLink Spaceplane.
- Cyanate_ester wikiPageWikiLink Substituent.
- Cyanate_ester wikiPageWikiLink Thermoset.
- Cyanate_ester wikiPageWikiLink Thermosetting_polymer.
- Cyanate_ester wikiPageWikiLink Triazine.
- Cyanate_ester wikiPageWikiLink Trimer_(chemistry).
- Cyanate_ester wikiPageWikiLink Trimerization.
- Cyanate_ester wikiPageWikiLink XCOR_Lynx.
- Cyanate_ester wikiPageWikiLinkText "-yl cyanate".
- Cyanate_ester wikiPageWikiLinkText "Cyanate ester".
- Cyanate_ester wikiPageWikiLinkText "carbon/cyanate".
- Cyanate_ester wikiPageWikiLinkText "cyanate ester".
- Cyanate_ester hasPhotoCollection Cyanate_ester.
- Cyanate_ester wikiPageUsesTemplate Template:Ester-stub.
- Cyanate_ester wikiPageUsesTemplate Template:Reflist.
- Cyanate_ester subject Category:Cyanates.
- Cyanate_ester subject Category:Functional_groups.
- Cyanate_ester hypernym Substances.
- Cyanate_ester type ChemicalCompound.
- Cyanate_ester type Group.
- Cyanate_ester type Group.
- Cyanate_ester comment "Cyanate esters are chemical substances generally based on a bisphenol or novolac derivative, in which the hydrogen atom of the phenolic OH group is substituted by a cyanide group. The resulting product with an -OCN group is named a cyanate ester.Cyanate esters can be cured and postcured by heating, either alone at elevated temperatures or at lower temperatures in presence of a suitable catalyst. The most common catalysts are transition metal complexes of cobalt, copper, manganese and zinc.".
- Cyanate_ester label "Cyanate ester".
- Cyanate_ester sameAs m.03b_v31.
- Cyanate_ester sameAs Q5197389.
- Cyanate_ester sameAs Q5197389.
- Cyanate_ester wasDerivedFrom Cyanate_ester?oldid=596151217.
- Cyanate_ester isPrimaryTopicOf Cyanate_ester.