Impact-resistant car board material was successfully developed

The GM-MI-GM recently developed a new composite material for a large pickup truck box liner. This material is stronger than a conventional steel truck box, with no dents after impact and no scratches. Does not rust. This new synthetic material will be used on large Chevrolet pickups.
After 6 years of exploration and trials of various materials, GM finally achieved research results. The inner and outer sides of the trunk panel were compounded with two different types of synthetic materials. The outer layer of the mudboard and the carboard board is reinforced reaction injection molding material, and its main component is a mica-filled polyimine. The main component of the linerboard is a 50/50 mixture of urethane and glass fiber. This composite structure of different materials inside and outside makes it possible for the car board to have different characteristics. The exterior of the car trunk can be flexed and retracted to quickly dissipate impact energy, while the inside of the car box is guaranteed to be sturdy.
In order to test the sturdiness and impact resistance of the material, GM engineers used a 16-pound bowling ball to throw at a distance of more than six feet, hitting the trunk wall of the truck. As a result, the ball hitting did not damage the outer box board. Engineers involved in the development of this material say that dents occur when ordinary steel plates are struck, and that synthetic materials that do not meet quality requirements break when they are struck. After the new material is impacted, it can be inseparable. This toughness comes from a special synthesis process.