The invention provides a nitrile rubber composition comprising nitrile rubber (A) comprising 25 to 60% by weight of an α,β-ethylenically unsaturated nitrile monomer unit, 40 to 75% by weight of a conjugated diene monomer unit, at least part of which may be hydrogenated, and 0 to 30% by weight of a cationic monomer unit, and a laminar inorganic filler (B) contained in a proportion of 1 to 100 parts by weight per 100 parts by weight of the nitrile rubber (A), in said laminar organic tiller (B), a) a ratio of a particle size distribution area of particles having a volume-based particle diameter of at least 1.0 µm being at most 30%, b) a maximum peak particle diameter being 0.10 to 1.0 µm, and c) a frequency volume in the maximum peak particle diameter being at least 3.0%, a crosslinkable nitrile rubber composition and a crosslinked rubber material thereof, and a production process of the nitrile rubber composition, in which a latex of the nitrile rubber (A) and an aqueous dispersion of the laminar inorganic filler are mixed, coagulated and dried.
本发明提供了一种
丁腈橡胶组合物,包括
丁腈橡胶(A),其中α,β-
乙烯基不饱和
丁腈单体单元的重量百分比为25%至60%,共轭二
烯单体单元的重量百分比为40%至75%,其中至少一部分可以
氢化,
阳离子单体单元的重量百分比为0%至30%、和层状无机填料 (B),其含量比例为每 100 份重量的
丁腈橡胶 (A) 1 至 100 份重量,在所述层状有机蘖 (B) 中,a) 粒径分布区中体积基粒径至少为 1.0微米的颗粒的粒度分布面积之比至多为30%,b)最大峰值颗粒直径为0.10至1.0微米,和c)最大峰值颗粒直径中的频率体积至少为3.0%,一种可交联
丁腈橡胶组合物及其交联橡胶材料,以及
丁腈橡胶组合物的生产工艺,其中
丁腈橡胶(A)的
胶乳和层状无机填料的
水分散液混合、凝固和干燥。