3 results about "Nitrile" patented technology

The invention discloses a formula of a fluororubber-ethylene propylene rubber mixing rubber compound, which comprises the following components in parts by weight: 50-70 of ethylene propylene rubber, 30-50 of fluororubber, 8-15 of nitrile buna rubber, 2.5-10 of magnesium oxide, 5-10 of zinc oxide, 0.1-0.5 of accelerant M, 0.2-1 of stearic acid, and 0.2-1 of sulphur. The fluororubber-ethylene propylene rubber mixing rubber compound obtained according to the invention is capable of simultaneously having high medium-resistant property and low-temperature-resistant property; simultaneously, proper elasticity can also be kept.

Disclosed are copper foil or net comprising a Cu-nitrile compound complex formed on the surface thereof, a method for preparing the same, and a lithium secondary battery that comprises an electrode using the same copper foil or net as a collector. The lithium secondary battery, which uses a copper collector comprising a Cu-nitrile compound complex formed on the surface thereof through the application of a certain voltage level, can prevent the corrosion of Cu occurring at a voltage of 3.6V or higher under overdischarge conditions away from the normal drive condition, and thus can significantly improve the capacity restorability after overdischarge.

Heat-expandable microspheres and applications thereof, the heat-expandable microspheres including a thermoplastic resin shell and a thermally-vaporizable blowing agent encapsulated therein. The thermoplastic resin is produced by polymerizing a polymerizable component containing (A) a nitrile monomer including methacrylonitrile, (B) a carboxyl-group-containing monomer and (C) a monomer having a functional group reactive with the carboxyl group. The polymerizable component satisfies the following conditions 1 and 2:

• • Condition 1: The weight fraction of the monomers (A), (B) and (C) in the polymerizable component satisfy the inequality shown below.

Weight fraction of the monomer (C)<Weight fraction of the monomer (A)≤Weight fraction of the monomer (B)   Inequality (I)

• • Condition 2: The ratio by weight of the monomer (B) to the monomer (C) ranges from 600:1 to 3:1.