FUNCTIONAL SELF-HEALING COATINGS AND COMPOSITIONS AND METHODS FOR FORMING SUCH COATINGS

摘要

Disclosed are coating compositions, methods for preparing the coatings and coatings made therefrom. The coatings have durable functional and damage healing properties. In some embodiments, compositions include a liquid media, surface modified diatomaceous earth (SMDE) particles chemically modified to impart a desired fluid wettability suspended in the liquid media, and microcapsules suspended in the liquid media. The SMDE particles are chemically modified through the use of various silanes imparting hydrophobicity, hydrophilicity, oleophobicity, or oleophilicity. In certain embodiments, the SMDE particles and the microcapsules are in different coating layers. In certain embodiments, compositions are in the form of powder coatings including mixtures of powder epoxy particles, SMDE particles chemically modified to impart a desired fluid wettability, and microcapsules. Disclosed further are methods for coating articles with the coatings and the coated articles.

主权项

1. A coating composition capable of forming a coating haying a desired fluid wettability and damage healing ability, comprising:
a. a liquid media comprising a liquid; b. a plurality of surface modified diatomaceous earth particles chemically modified to impart the desired fluid wettability suspended in the liquid media; and c. a first plurality of microcapsules containing a resin suspended in the liquid media.