Effects of Coating with Calcite together with Various Fire Retardants on the Fire Properties of Particleboard

Abstract

The fire properties of particleboard coated with calcite and a variety of fireretardants (FR) was investigated. Four different chemicals, boric acid (BA), borax (BX), dolomite (DOL), and melamine (MEL), were added at the concentration of 1.0%, 3.0%, and 5.0% by oven-dry weight of calcite. The particleboard panels were tested according to the ASTM-E 69 standard to investigate their fire-retardant properties. The determination of weight loss, temperature, and the release of O2, CO, and NO by the samples was measured and recorded over 30 s intervals during combustion of the materials. The results indicated that the BA coatings exhibited better thermal stability than the other chemicals. Consequently, the lowest weight loss and temperature was found for specimens treated with 5.0% BA. These chemicals were effective relative to the fire properties of coated particleboard surfaces, depending on the type and ratio of the chemicals to the calcite.

Effect of calcite addition on technical properties and reduction of formaldehyde emissions of medium density fiberboard

“…They investigated the modulus of rupture (MOR), modulus of elasticity (MOE), limiting oxygen index (LOI), and simultaneous thermal analysis (TG-DSC) of MDF boards. Özdemir and Tutus (2016) investigated the effects of coating with calcite together with various fire retardants on the fire properties of particleboard. Taghiyari et al (2016) produced MDF from wollastonite fibers, camel-thorn, and wood fibers.…”

Flame retardancy of particleboards made from oil palm trunk-poly(vinyl) alcohol with citric acid and calcium carbonate as additives

“…Mahmood et al [16] stated that the thermal stability of the particleboard improved after various pre-treatment that could be attributed to the removal of noncellulosic impurities during regeneration of particles after pretreatment. Ozdemir and Tutus [17] also reported that particle materials are pre-treated to decrease the flammability with fire retardant chemicals. To date, only a few studies have carried out using NaCl salt as pre-treatment agent [15].…”

“…In another study, non-flammable mineral fillers were used in composites, resulting in reduced heat release and weight [18]. Calcium carbonate (CaCO 3 ) is a carbonated mineral with the most stable polymorph [17]. Calcium carbonate is most widely used due to its features such as extensive sources, low cost, and non-toxic.…”

Synthesis of bromo‐cardanol novolac resins and evaluation of their effectiveness as flame retardants and adhesives for particleboard

“…For fire protected chip‐ and particleboards or wood fibreboard compounds containing nitrogen, phosphorus, boron, zinc, calcium, magnesium, and combinations thereof are used as flame retardants . The use of bromine‐containing flame retardants for wood‐based panels has been studied poorly until now.…”