To provide a conjugated diene polymer composition capable of providing a rubber composition excellent in silica dispersibility, excellent in fuel saving performance and wet grip performance, and having sufficient breaking strength, breaking elongation and abrasion resistance sufficient in actual uses.SOLUTION: There is provided a conjugated diene polymer composition in which a silica inorganic filler is dispersed in a conjugated diene polymer, and volume fraction of the silica inorganic filler in the conjugated diene polymer composition φ (vol%) and Payne effect ΔG' (MPa) calculated by a viscoelasticity test satisfy the following formula (I). ΔG'<0.250×exp(0.162×φ) (I), where ΔG' represents the Payne effect obtained as difference of storage elastic modulus (G') values when 0.07% strain and 1200% strain of the conjugated diene polymer composition are measured according to ASTM D6204, and φ represents volume fraction (vol%) of the silica inorganic filler in the conjugated diene polymer composition.SELECTED DRAWING: None
【課題】シリカ分散性に優れ、省燃費性能、ウェットグリップ性能に優れ、実用上十分な破断強度、破断伸び、及び耐摩耗性を有するゴム組成物を得ることが可能な、共役ジエン系重合体組成物を提供する。【解決手段】共役ジエン系重合体にシリカ系無機充填剤が分散した共役ジエン系重合体組成物であって、前記共役ジエン系重合体組成物中の前記シリカ系無機充填剤の体積分率φ(vol%)と、粘弾性試験により算出されるペイン効果ΔG’(MPa)と、が、下記式(1)を満たす共役ジエン系重合体組成物。ΔG’< 0.250×exp(0.162×φ) ・・・(I)(式(I)中、ΔG’は、ASTM D6204に準拠して前記共役ジエン系重合体組成物の0.07%歪と1200%歪を測定した時の貯蔵弾性率(G’)値の差として得られるペイン効果を表す。φは、共役ジエン系重合体組成物中のシリカ系無機充填剤の体積分率(vоl%)を表す。)【選択図】なし
CONJUGATED DIENE POLYMER COMPOSITION, MASTER BATCH, MEMBER FOR TIRE, AND MANUFACTURING METHOD OF CONJUGATED DIENE POLYMER COMPOSITION
共役ジエン系重合体組成物、マスターバッチ、タイヤ用部材、及び共役ジエン系重合体組成物の製造方法
2019-04-25
Patent
Electronic Resource
Japanese
IPC: | C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B29B PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED , Vorbereiten oder Vorbehandeln der zu verformenden Masse / B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B60C VEHICLE TYRES , Fahrzeugreifen / C08J Verarbeitung , WORKING-UP / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS |
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