A method for preparing a rubber protective cover of an expressway guardrail includes steps of: (S1), preparing material, wherein the material includes high-temperature vulcanized rubber, nanometer zinc oxide, nanometer silicon dioxide and a modifier; (S2), placing the vulcanized rubber into a mixing furnace which is able to increase a temperature, and then heating to 200 C.; (S3), adding the nanometer zinc oxide, and then stirring for 10 minutes; (S4), adding the nanometer silicon dioxide, and then stirring for 5 minutes; (S5), adding the modifier, and then stirring for 30 minutes; and (S6), adding the rubber after stirring into a four-roll calender, shaping, and preparing the rubber cover having a thickness of 10-20 mm and a length of 300-600 mm. The present invention has a low cost, a corrosion resistance, an easy preparation process, a low equipment requirement and a strong operability.

It is intended to provide a resin composition that serves as a raw material for a printed circuit board excellent in heat resistance after moisture absorption and is excellent in moldability. The resin composition of the present invention contains a maleimide compound, a silane compound having a carbon-carbon unsaturated bond and a hydrolyzable group or a hydroxy group, a silane compound having an epoxy skeleton and a hydrolyzable group or a hydroxy group, and an inorganic filler.

Aspects of the present disclosure generally describe polyarylether ketones and methods of use. In some aspects, a composition includes one or more polymers of formulae (I), (II), or (III): ##STR00001##

A resin composition contains a compound (A) containing at least one selected from a polyfunctional vinyl aromatic copolymer (A-1), which has a repeating unit (a1) derived from a divinyl aromatic compound and a repeating unit (a2) derived from a monovinyl aromatic compound and contains the repeating unit (a1) at 2 mol % or more and less than 95 mol % and the repeating unit (a2) at 5 mol % or more and less than 98 mol % when the total of the repeating unit (a1) and the repeating unit (a2) is set to 100 mol %, or a hydrocarbon-based compound (A-2) represented by Formula (1); and a phosphorus-containing compound (B) represented by Formula (2).