Provided are: a thermoplastic elastomer composition which exhibits excellent thermal aging resistance when exposed to a high-temperature environment for a long period of time, excellent hardness, excellent mechanical properties, and excellent extrusion processability; and the like. A thermoplastic elastomer composition (I) which contains a crosslinked product of an ethylene/alpha-olefin/non-conjugated polyene copolymer (A) having a weight average molecular weight of 350,000 or more and a phenolic resin-based crosslinking agent (E), and which contains 360-460 parts by mass of a crystalline polyolefin (B), 2-6 parts by mass of a fatty acid-based lubricant (D), and 80 parts by mass or more of a softening agent (C1) per 100 parts by mass of the copolymer (A), the 1/2 crystallization time of the thermoplastic elastomer composition (I) at 120 DEG C is 200 seconds or less, and the maximum spherocrystal size of the polyolefin component contained in the thermoplastic elastomer composition (I) is within the range of 8 [mu] m or less.
本发明提供长期暴露于高温环境下时的耐热老化性优异、硬度和机械物性也优异、且挤出加工性也优异的热塑性弹性体组合物等。一种热塑性弹性体组合物(I),其包含重均分子量为350,000以上的乙烯‑α‑烯烃‑非共轭多烯共聚物(A)与酚醛树脂系交联剂(E)的交联体,相对于前述共聚物(A)100质量份,含有360质量份~460质量份的结晶性聚烯烃(B)、2~6质量份的脂肪酸系润滑剂(D)、80质量份以上的软化剂(C1),前述热塑性弹性体组合物(I)在120℃时的1/2结晶化时间为200秒以下,前述热塑性弹性体组合物(I)所含的聚烯烃成分的最大球晶尺寸在8μm以下的范围。
Thermoplastic elastomer composition and molded article thereof
热塑性弹性体组合物及其成型体
2025-05-09
Patent
Electronic Resource
Chinese
IPC: | B60J WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES , Fenster, Windschutzscheiben und bewegbare Dächer, Türen oder Ähnliches für Fahrzeuge / B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / 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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