ELASTOMER-BASED POLYMERIC COMPOSITIONS HAVING AMORPHOUS SILICA FILLERS

• Main Authors: TIMOTHY J PERSON, SUSAN SONG, PAUL J CARONIA, LIN FU
• Format: Patent
• Language: English; Japanese
• Published: 08.07.2021
• Subjects: BASIC ELECTRIC ELEMENTS; CABLES; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CONDUCTORS; ELECTRICITY; INSULATORS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

To provide polymeric compositions suitable for use as insulation materials in electrical applications.SOLUTION: A polymeric composition for use in coated conductors comprises: (a) an ethylene/α-olefin-based elastomer; and (b) a filler, where the filler consists essentially of amorphous silica. The filler is present in an amount ranging from 15 to 40 wt.% based on the entire weight of the polymeric composition. The amorphous silica is solid at 22°C and standard atmospheric pressure. The polymeric composition can be extruded without melt fracture at a shear rate higher than or equal to 719 1/s.SELECTED DRAWING: None 【課題】電気的用途における絶縁材料としての使用に好適なポリマー組成物を提供する。【解決手段】被膜導体における使用のためのポリマー組成物であって、（ａ）エチレン／α−オレフィン系エラストマーと、（ｂ）非晶質シリカから本質的になる充填剤と、を含むポリマー組成物であって、前記充填剤が、前記ポリマー組成物の全重量に基づいて１５〜４０重量パーセントの範囲の量で存在し、前記非晶質シリカが２２℃および標準大気圧において固体であり、７１９ １／秒またはより高い剪断速度において溶融破壊なしに押し出しできる、ポリマー組成物である。【選択図】なし