Effects of Silane Coupling Agent/Organic Bentonite on Tea Saponin Intumescent Flame-Retardant Coatings

Abstract:

In this paper, silane coupling agent and organic modified bentonite were used in tea saponin intumescent flame-retardant coatings to improve the flowability, storage stability and film properties. The effects of silane coupling agent and organic modified bentonite on the flowability, storage stability and film properties were discussed, and flame resistance and pyrolysis performance of the flame-retardant coatings also were investigated. The results show that silane coupling agent can greatly improve the rheological properties, storage stability and film properties of the flame-retardant coating at the amount of 1.5%. Flame-retardant coatings have good dispersion properties and thixotropy, When bentonite modified with cetyltrimethylammonium chloride (CTAC-Bentonite) was introduced to the coatings. Fire resistance test and TG-DTG analysis showed that silane coupling agent/organic bentonite can promote the charring of the coatings and increase the amount of char, which protecting the internal substrates, reducing the thermal degradation rate. What's more, the flame retardancy of the materials was improved significantly owing to the increasing of the amount of residual carbon and the enhancing of thermal stability at a high temperature.

• Periodical: Advanced Materials Research (Volumes 875-877)
• Pages: 1318-1323
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.875-877.1318
• Online since: February 2014
• Authors: Wei Qian, Xiang Zhou Li, Zhi Ping Wu
• Keywords: Film Property, Organic Bentonite, Rheological Property, Silane Coupling Agent, Tea Saponin Intumesscent Flame-Retardant Coatings

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