Composition, polymer composite article formed therewith, and method of preparing same

A composition for preparing a polymer composite article, said composition consisting of:

• (A) a filler in an amount of from 10 to 90 wt. %, wherein said (A) filler is selected from a mineral filler, a glass fiber, a carbon fiber, or combinations thereof;
• (B) a polymer in an amount of from 10 to 90 wt. %, wherein said (B) polymer comprises polyvinyl chloride;
• and
• (C) an organopolysiloxane in an amount of from greater than 0 to 10 wt. %;
• the (C) organopolysiloxane having at least one silicon-bonded hydroxyl group and a viscosity of from 1,000 to 60,000 mPa·s at 25° C.;
• and
• optionally, one or more additives selected from (D) a compatibilizer, (E) a colorant, (F) a blowing agent, (G) a UV stabilizer, (H) an antioxidant, (I) a process aid, (J) a preservative, (K) a biocide, (L) a flame retardant, (M) an impact modifier, and combinations thereof;
• each based on the total weight of components (A), (B) and (C) in said composition.