Influence of Four Coatings on the Mold-Resistance and Combustion Performance of Decorative Bamboo Curtain

Abstract

Decorative bamboo curtain (DBC) is a kind of bamboo product made of bamboo filaments by weaving or applying adhesive, and is becoming popular as an interior decorative material with a disadvantage of mildew. In this study, four antimold coatings, including wax oil (WO), polyurethane varnish (PV), silicone acrylic emulsion (SE), and SE with 3-iodo-2-propynyl butylcarbamate (SI), were applied to improve the antimildew capability of DBC. The resistance to mold fungi performance was evaluated using the Chinese National Standard GB/T 18261-2013, and combustion performance of DBC was analyzed by cone calorimetry. The results showed that the SI coating group had the best antimildew performance with an efficacy of 100%. SE and PV coatings had the worst performance. The antimildew performance of the WO coating was almost the same as that of the PV coating. External thermal radiation, composition of pyrolysis, and pyrolysis rate of the antimold coatings and DBC were completely different. During the combustion process, all coated groups showed a tendency to increase total heat release (THR). The THR of the WO and PV groups increased 22.22% and 13.33%, respectively; the THR of the SE and SI groups both increased by 4.44%. Total smoke production and specific extinction area values decreased slightly in the SE and SI groups, whereas those in the WO and PV groups showed an increasing trend. The SI group was very suitable to be used as antimold coatings on the surface of DBCs because of its best antimildew performance and smoke suppression.