New hot spot of fiber-reinforced composite materials: recycling

Because fiber-reinforced composite materials have the advantages of durability, light weight and easy manufacture of complex shapes, they have great potential for applications in construction, transportation, and wind energy. The steady increase in the use of composite materials has brought benefits in many areas.

However, most composite materials use a thermosetting resin matrix, which cannot be recycled because its cross-linked network is not easily destroyed, as opposed to remeltable thermoplastics.

Therefore, researchers around the world are carrying out some research projects to develop the recycling process and seek ways to effectively use recycled materials in new or existing applications.

latest progress

According to a recent report on the composites world website, at present, the two largest organizations in the composites industry, the Advanced Composites Manufacturing Innovation Institute (IACMI) and the American Composites Industry Association (ACMA), have announced an industry cooperation project to develop a Mechanical and heat recovery methods are used to obtain both energy value and residual ash/fiber.

The Institute for Advanced Composites Manufacturing Innovation (IACMI) announced a project that focuses on researching a powerful and scalable integrated recycling method. The project is carried out by the American Composites Industry Association (ACMA), a European team researching the plastic structure of carbohydrazide technology, Schulman, the University of Tennessee, and the University of Knoxville. In addition, Owens Corning Composite Solutions Company and Ashland Company also provided support for the project.

Tom Dobbins, President of the American Composites Industry Association, said:

The point of view of ‘end-of-life composite materials’ is that, compared with renewable materials, composite materials are difficult to recycle or reuse, and their recyclability is poor. The exploration of this research will provide strong technical evidence for the composite materials industry and put forward opinions on the recyclability of materials.

The goal of this technical cooperation is to develop a mechanical and heat recovery method that can obtain both energy value and residual ash/fiber. If it supports the goal of the Advanced Composite Manufacturing Innovation Institute (IACMI), it will achieve 80% of composite materials that can be recycled within five years, greatly improving the recyclability of composite materials, and reducing waste and waste composite materials. Send it to the landfill.

The project also supports ACMA's goal of recycling glass fiber reinforced composite materials (FRP) and composite carbon fiber. The project will research the promising pyrolysis carbohydrazide SIS test technology to recover all liquids, oils and tars, and convert them into clean synthetic gas through composite materials to recover glass fibers and carbon fibers.

Uday Vaidya told the CEO of the Advanced Composites Manufacturing Innovation Agency and the managers of the Oak Ridge National Laboratory in the United States, "Thermolyzer company provides a special opportunity to recycle large amounts of composite materials, which achieves a viable composite material. , The integration of recyclable future industry choices."

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