Evaluation of Thermal Degradation of Wood with Environmentally Problematic Application of Coatings

Abstract

For predicting the behavior of wood products with a final finish by applying polyurethane coatings (mainly solvent) under realistic conditions of use is extremely important to monitor all quality characteristics (physical, mechanical, chemical and performance) as well as fire-engineering based on selected characteristics of thermal degradation The paper presents proposals evaluation criteria (total weight loss, maximum rate of burning, time to reach maximum speed of burning, ignition time) for test radiant heat source for wood surface finishing materials by polyurethane coatings for a comprehensive assessment of fire-technical and environmental safety materials for predicting the behavior of these materials in response to fire.

The effect of flame retardants on the fire technical characteristics of recycled textiles

“…During the test, the mass loss was recorded at regular 10-s intervals, and possible ignition of the samples was visually monitored. 68…”

“…During the test, the mass loss was recorded at regular 10-s intervals, and possible ignition of the samples was visually monitored. 68 The evaluation criterion of the experiment is the relative mass loss according to the equation:…”

The Evaluation of Specific Environmental and Degradation Characteristics of Surface Treated Wood

“…Specific adhesion of the coating films is calculated according (1): Experimental test procedure involves subjecting the test samples to the effect of thermal infrared heater with power output of 1000 W for 10 minutes at a distance of 30 mm from the surface of a radiating body. During the tests the mass loss is recorded at regular intervals of 10 s [1,4]. Test specimens before and after the experiment thermal loading is presented in the Fig.…”

“…Technological processes of surface treatment of wood with application of coatings aim to create the necessary protective layer on the wood surface with desired aesthetic properties. Currently, the use of different coatings on the base of the variable binder [1]. Solvent-based coatings are sources of volatile organic compounds (VOC) emissions that cause serious health problems (carcinogenic, harmful, irritant effects) [2].…”

Modified Method of Evaluation the Effect of the Protection Retardant Coatings Applied on the Surface of the Wood Building Construction

“…In our paper we deal with an experimental assessment of selected retarding substances affect (HR-Prof, PLAMOSTOP D and D PLAMOSTOPtransparent), which were applied to the surface of solid spruce wood, and further thermally loaded with a radiant heat source. The evaluation criteria used in the modified test method [3,4], are the relative weight loss of test specimens, the relative rate of burning and the time of ignition.…”