Biobased Renewable Materials
bioasphalt, bioadhensive, biobased intelligent coating, and biopolymers
KEW owns a series of intellectual properties in production of bioasphalt, bioadhensive, biobased intelligent coating, and biopolymers
Bioasphalt and Bioadhesive
KEW’s bioasphalt production technology uses plant oils or other renewable oils and fly ash. The KEW bioasphalt is a cost-effective, environmentally-friendly alternative to petroleum based asphalt for roofing and paving applications.
After many years’ development, extensive testing, evaluation and industrial trials, this technology has been licensed to a large roofing product manufacturer in the North America.
Key Benefits of KEW’s Bioasphalt
• Simple production process and cost effective
• Environmentally friendly and non-hazardous material
- No aromatic compounds and other VOCs
- Odor-free
• Performance Verified
- Improved thermal durability
- Improved low temperature performance
- Reduction of stain index
- Improve low performing or marginal flux into high quality flux asphalt
- Substitute or supplement for high cost SBS polymer additives.
Industrial Evaluation Completed
- Shingle production using bio-asphalt/asphalt blend
- Ply based membrane production using bio-asphalt/asphalt blend
- Bitumen adhesive using bio-asphalt/asphalt blend
- Improved PG low temperature specifications
- Asphalt blending using off-spec or low performance paving grade asphalt
- Reduced use of SBS polymer
Biobased Intelligent Coating
KEW’s smart coating technology can be used to tune the reflectance and transmittance of solar light based on the environmental temperature to maximize the energy savings by reducing both heating and cooling loads. The coating is plant-oils based polymers containing an inorganic additive. An organic additive based coating is being developed at KEW.
Cool roofs have been used on commercial, industrial, and residential buildings to reduce their interior temperature and energy use. However, cool roofs have a winter time heating penalty because they reflect solar heat that would help warm the building, thereby increasing the heating load. To maximize the energy savings by reducing both heating and cooling loads, a smart roof coating that can tune the reflectance and transmittance of solar light based on the environmental temperature was developed and demonstrated during this project. Compared to the traditional cool roof coatings and other cool roofing products, this bio-based temperature-sensing coating has significant advantages, including reduction in both heating and cooling loads, utilization of renewable and recycled material, high energy efficiency, reduced capital and production costs, elimination of the odor and volatile organic compounds (VOC) emissions associated with traditional cool roof coating products, and easy implementation.
A series of experiments was conducted to study the thermochromatic characteristics of the coating. Field testing was conducted using an asphalt shingle roof with the smart coating.
Ultra-Violet light (UV) Blocking Film Technology
This renewable material based thin film coating is able to remove 100% UV light while transmitting the IR and visible light. This UV filtering technology can be used in various applications.
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