Aqueous sizing composition for producing sized glass fiber strands with improved slip flow properties

摘要

Sized glass fiber strands are provided that have improved slip/flow characteristics. This improved characteristic is achieved by sizing glass fibers with an aqueous sizing composition having one or more nonstarch film forming polymers, one or more coupling agents, one or more lubricants or a mixture thereof, polyethylene-containing polymer with limited branching and water. The aqueous sizing composition can also have a wax having a melting point greater than 50 DEG C. where the total amount of the polyethylene polymer and wax is not greater than about 15 weight percent of the aqueous sizing composition.