Effects of Complex Flame Retardant on the Thermal Decomposition of Natural Fiber

Abstract

Natural fiber is a renewable resource characterized by its low cost and environmental friendliness. However, flame retardant properties are one of the biggest limitations for the preparation of composite materials that need to be improved. In this work, a novel complex flame retardant consisting of aluminum hydroxide (ALH) and decabromine diphenyl oxide (PBDE) was proposed to inhibit the thermal decomposition. Flameretarding paper was made from softwood pulp and complex flame retardant. The thermal properties of the flame retardants were studied using thermogravimetric analysis (TGA). The mechanical properties of paper treated at different temperatures were tested, while the surface characteristics of natural fiber were detected by a scanning electron microscope (SEM) and atomic force microscope (AFM); their specific surface areas were also measured. The optimum value of aluminum hydroxide to decabromine diphenyl oxide was 3 to 1, added at 70% based on dried natural fiber. It also had good flame retardant performance and mechanical properties at 200 °C for 5 min; meanwhile, the tensile index of the handsheet was 82.5 Nm/g, and the specific surface area was 0.414 m 2 /g.

Establishment of the mechanism and fireproof efficiency of wood treated with an impregnating solution and coatings

“…However, at the same time, this mechanism adversely affects smoke-generating capacity of the coating. It agrees with data known from articles [7,10], whose also attributed a change in the process of smoke generation when treated with swelling coatings. In contrast to research results [8,11], obtained data on the influence of a coating on the process of the formation of a foamed layer of coke and a change in the thermal insulation properties allow us to argue that: -the main regulator of the process of thermal insulation is not only the formation of a layer of coked cellular material but thermal resistance of a fireproof coating; -a significant impact on the process of transition of a combustible material at application of a fireproof coating is exerted by a transition to the group of materials that are difficult to ignite, which spread the flame over surface slowly at low smoke-generating capacity.…”

“…In most cases, they are modified with polymer complexes and flame retardants, but such coatings relate to the mate- [7,8].…”

Effect of a flame­retardant coating on the burning parameters of wood samples

“…Feature of fire protection of wooden building structures consists in creation of elements of heat-insulating screens on the structure surface that withstand direct fire action and allow structures to maintain their functions for a certain period of time [5,6]. Behavior of the flame-retardant coating which is a separate and complex task and covers both coating bloating and subsequent heat transfer is described in [5].…”

“…However, the issues connected with establishment of foam formation temperature remain unresolved there. Also, effect of binders based on vegetative raw materials on properties of flexible insulating materials is considered in [6], however, the flammability related issue remains unresolved. Effect of thermal modification and flame retarding ability was…”

Influence of dry mixtures in a coating on the effectiveness of wood protection from the action of a magnesium flame

“…They are modified by polymeric complexes and fire-retardant agents in most cases, but such coatings relate to easily washable materials and are suitable for indoor spaces [10,11].…”