Expandable reinforcing sheet material for vehicle outer panel
AssigneesHyundai Motor Company, Hong Seong Chemical Co., Ltd.
InventorsJin Soo Kim, Hu Ryeong Ju
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Abstract
Expandable reinforcing sheet material for vehicle outer panel, comprising nitrile butadiene rubber (NBR) modified epoxy resin, bisphenol A type epoxy resin, potassium-zincs thermal stabilizer, calcium carbonate, polyvinyl chloride, carbon black, azodicarbonamides expanding agent, expanding accelerator, adhesion supplying agent, and dicyandiamide, provides excellent adhesion ability to the outer panel of the vehicle, good workability, vibration damping capacity can be suitable for applying to the outer panel of vehicle and thus the outer panel of vehicle on the backside of which the reinforcing material is attached can become lighter and thinner.
Claims2
Expandable reinforcing sheet material comprising:
- 10˜14 weight % of nitrile butadiene rubber (NBR) modified epoxy resin alone or nitrile butadiene rubber (NBR) modified epoxy resin mixed with another modified epoxy resin selected from the group consisting of carboxyl terminated butadiene acryonitrile polymer (CTBN), amine terminated butadiene acrylonitrile polymer (ATBN) and methacrylate vinyl terminated butadiene acrylonitrile polymer (VTBN),
- 5˜20 weight % of bisphenol A type epoxy resin,
- 0.3˜4 weight % of potassium-zincs thermal stabilizer,
- 17˜30 weight % of calcium carbonate,
- 10˜20 weight % of polyvinyl chloride,
- 1˜2 weight % of carbon black,
- 3˜5 weight % of azodicarbonamides expanding agent,
- 0.3˜2 weight % of expanding accelerator,
- 4˜7 weight % of adhesion providing agent, and
- 0.1˜2 weight % of dicyandiamide.
Dependencies are inferred from the claim text.