Current, vinyl resin with good corrosion resistance characteristics and improved process characteristics, and plenty of successful application in anticorrosion occasions, including corrosion resistant FRP production, anti-corrosion engineering, etc., but in some non corrosion occasion and Gao Lixue performance requirements of composites, the domestic and foreign customers can only choose epoxy vinyl resin, It actually caused a waste of resin application or design, so some manufacturers at home and abroad are trying to find a new material to maintain the mechanical properties of vinyl resin, reasonable cost, some companies through new research and development of a timely launch of a new type of high-performance unsaturated resin, called vinyl polyester resin, Named as Vinyl polyester resin in English and abbreviated as "VPR" in China, this resin combines the characteristics of vinyl ester and universal unsaturated resin, so that users have more choices.

    VPR styrene vinyl polyester resin is a kind of soluble in liquid containing unsaturated double bond of the special structure of unsaturated polyester resin, VPR vinyl polyester resin has good corrosion resistance, is better than that of benzenoid between unsaturated resin, mechanical properties and fairly standard epoxy vinyl resin, especially the fatigue property and dynamic load resistance;In addition, more general resin, VPR vinyl polyester resin and has good weather resistance, while VPR vinyl polyester resin and has good glass fiber infiltration performance and process performance, suitable for a variety of FRP molding process, including fiber winding, pultrusion, hand paste, injection and other composite materials process.

    Due to the unique properties and reasonable cost of VPR vinyl polyester resin, the new material has a wide application prospect:

    (1) FRP reinforcement in concrete;

    （2） Structural materials in ship products;

    (3) Structural layer materials in the production of large FRP products, especially in the overall field production of large tank instead of regular vinyl resin structural layer;

    (4) Fatigue FRP pultruded profiles, such as moving FRP horizontal bars.