Abstract
In this work, recycling of post-consumer carpets into structural composites using a modified vacuum assisted resin transfer molding process has been demonstrated. Fabrication of carpet composites addressed the problem related to the environmental effect of waste carpet. Application of the recycled carpet composite as the noise barrier structure has been studied in terms of noise absorption coefficient. Results show that the carpet composite absorbs noise better than conventional noise barrier at a wide spectrum of frequency. Effect of weather exposure on the carpet composite showed the degradation in the mechanical properties. Nanoclay films are also used on the carpet composite and show no change in the noise absorption ability.
Highlights
For sustainable development, the materials recovery and recycling industry have to deliver marketable products which are based on cost-effective technologies and have a positive life cycle environmental impact [1,2]
Nylon 6, 6-based carpet fibers were infused with epoxy, polyester, and vinyl ester resins to yield carpet composites with improved properties by using a modified vacuum-assisted resin transfer molding (VARTM)
The polyester resin was prepared by adding hardener MEKP in the weight ratio of 1/100 (MEKP/PE), and Vinyl Ester resin MEKP was added in the weight ratio of 1.25/100 (MEKP/VE)
Summary
The materials recovery and recycling industry have to deliver marketable products which are based on cost-effective technologies and have a positive life cycle environmental impact [1,2]. With the advancement of new materials, researchers have started using different kinds of nanomaterial such as nanofiber [20], carbon nanotube [21,22], granular material [23], and metal nanoparticles [24] These materials have significant effects on the noise barrier capability of the material. Nylon 6, 6-based carpet fibers were infused with epoxy, polyester, and vinyl ester resins to yield carpet composites with improved properties by using a modified VARTM fabrication process. In the present study, recycling of post-consumer carpets into composite materials with improved mechanical and sound barrier properties that will meet the needs of infrastructure, transportation, and sound barrier walls from recycled nylon-based carpet and low-cost constituents like nanoclay. It is necessary that this is achieved without separation of the ingredients
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