Polyurethane pultrusion materials: born for light weight

In the past, polyurethane composite materials were mainly automotive interior and exterior parts molded by the structural reaction injection method (SRIM), such as pickup truck boxes, floor panels, luggage racks, inner door panels, etc. (polyurethane foamed). However, in recent years, polyurethane composite materials have developed technologies such as pultrusion, winding, vacuum infusion, and long-fiber injection, and non-foaming polyurethane composite materials are mainly used to manufacture window frames, bathtubs, light poles, and parts of trucks and off-road vehicles. large parts etc.

Polyurethane resin has the advantages of good toughness, fast curing, and no styrene volatilization, which makes its composite materials stand out. With the mastery of polyurethane molding technology and the progress in controlling its reactivity to extend its pot life, polyurethane has entered the field of composite materials long dominated by unsaturated polyester and vinyl ester resins.

In recent years, polyurethane pultrusion technology has been widely used, especially in the field of doors and windows, opening up a whole new product category.

Polyurethane pultrusion material is a kind of high-strength, high-modulus, lightweight polymer composite material produced by continuous pultrusion process with high-hardness polyurethane elastomer as matrix material and glass fiber as reinforcement material. In addition, polyurethane pultrusion materials have better thermal insulation effect than traditional materials.