申请人:Polyplastics Co., Ltd.
公开号:EP2471835A1
公开(公告)日:2012-07-04
To provide an easily-manufactured liquid-crystalline polymer having high thermal conductivity, as well as a molded article that is formed of the liquid crystalline polymer and has a property of being highly mechanical. A liquid-crystalline polymer is used that is formed by polymerizing monomers having an asymmetrical molecular structure, in which the enthalpy of fusion ΔH measured by way of DSC (Differential Scanning Calorimetry) is greater than or equal to 2.5 J/g (joules per gram) and less than or equal to 10 J/g, and the inherent viscosity (I.V.) is greater than or equal to 5 dl/g and less than or equal to 7 dl/g. It is preferable for the monomer having asymmetrical molecular structure to be at least one selected from a group consisting of 4-hydroxybenzoic acid (HBA), 6-hydroxy-2-naphthoic acid (HNA), N-acetyl-p-aminophenol (APAP), and 4-hydroxy-4'-biphenylcarboxylic acid (HBCA).
提供一种易于制造且具有高导热性的液晶聚合物,以及一种由该液晶聚合物形成并具有高机械性能的成型品。所使用的液晶聚合物是由具有不对称分子结构的单体聚合而成,其中通过 DSC(差示扫描量热仪)测量的熔化焓 ΔH 大于或等于 2.5 J/g(焦耳/克)且小于或等于 10 J/g,固有粘度(I.V.)大于或等于 5 dl/g且小于或等于 7 dl/g。具有不对称分子结构的单体最好是选自 4-羟基苯甲酸 (HBA)、6-羟基-2-萘酸 (HNA)、N-乙酰基对氨基苯酚 (APAP) 和 4-羟基-4'-联苯羧酸 (HBCA) 所组成的组中的至少一种。