Molten salt assisted pyrolysis recycling of glass fiber reinforced polymer composites
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United States of America Patent
Stats
-
Sep 5, 2023
Grant Date -
May 7, 2020
app pub date -
Nov 5, 2019
filing date -
Nov 5, 2018
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method of recycling glass fiber-reinforced polymer composite materials that can provide improved quality recycled glass fiber is described. More particularly, the method comprises pyrolysis of glass fiber-reinforced polymer composite scrap and/or end-of-life material and the subsequent immersion of the pyrolyzed glass fibers in a molten salt bath, e.g., comprising molten potassium nitrate. Immersion in the molten salt bath can eliminate char from the pyrolyzed fibers, as well as removing residual inorganic materials. In addition, immersion in the molten salt bath can strengthen the glass fiber, which can result in the recovery or avoidance of tensile strength losses normally incurred through traditional char removal processes.
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International Classification(s)
- 2019 Application Filing Year
- C03C Class
- 943 Applications Filed
- 575 Patents Issued To-Date
- 60.98 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- C03C Class
- 0 % this patent is cited more than
- 2 Age
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