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    • 48. 发明申请
    • CROSSLINKED POLYETHYLENE COMPOSITION
    • 交联聚乙烯组合物
    • US20150232586A1
    • 2015-08-20
    • US14407352
    • 2012-06-13
    • Xuelian ChenWenbin LiangYanhua NiuShih-yaw Lai
    • Xuelian ChenWenbin LiangYanhua NiuShih-yaw Lai
    • C08F10/02
    • C08F10/02C08K5/14C08L23/04C08L23/08C08L23/06
    • A crosslinked polyethylene composition comprising 100 parts by weight of polyethylene, 0.05-5 parts by weight of crosslinking agent, 0.03-3 parts by weight of crosslinking aid. Polyethylene is a copolymer, homopolymer and/or a mixture thereof. The crosslinking agent is an organic peroxide having a half-life period longer than 3 minutes at 190° C. and/or a multi-membered heterocyclic alkane consisting of 3 to 6 carbon atoms and 3 to 6 oxygen atoms and/or a derivative thereof. The crosslinking aid is an organic substance containing allyl, maleimido, (meth)acrylate group and/or a polymer having a vinyl content higher than 50%. Preferably, the crosslinking aid is triallyl isocyanate (TAIC), triallyl cyanurate (TAC) or a mixture thereof. The crosslinked polyethylene composition has a crosslinking efficiency index >1000 Nm/g and a δ torque value >15 Nm at 220° C., and has a high safe processing temperature and long crosslinking delay, and therefore is particularly suitable for rotationally molded products.
    • 交联聚乙烯组合物,其包含100重量份的聚乙烯,0.05-5重量份的交联剂,0.03-3重量份的交联助剂。 聚乙烯是共聚物,均聚物和/或其混合物。 交联剂是在190℃下半衰期长于3分钟的有机过氧化物和/或由3至6个碳原子和3至6个氧原子组成的多元杂环烷烃和/或其衍生物 。 交联助剂是含有烯丙基,马来酰亚胺基,(甲基)丙烯酸酯基和/或乙烯基含量高于50%的聚合物的有机物质。 优选地,交联助剂是异氰酸三烯丙酯(TAIC),氰尿酸三烯丙酯(TAC)或其混合物。 交联聚乙烯组合物在220℃下的交联效率指数> 1000Nm 3 / g,δ扭矩值> 15Nm,具有高安全的加工温度和较长的交联延迟,因此特别适用于旋转成型产品。