Effect of basalt fibres reinforcement and aluminum trihydrate on the thermal properties of intumescent fire retardant coatings

AbstractIn built environments the combustibility of wood is a great concern, which limits the use of wood as a building material due to legislation. The reaction-to-fire properties of wood can be altered with the use of fire-retardant chemicals, and most of the commonly used fire retardants already have a long history of use. However, only limited information is available on the impact of different fire retardants on the adhesion properties of wood. Additionally, comparative studies between chemicals from different groups of fire retardants is scarce. The objective of this study was to investigate and compare the effects of two commonly used fire retardants, sodium silicate (SS) and diammonium phosphate (DAP), on veneer properties, the focus being especially on thermal behavior and adhesion. Thermal properties and combustibility were studied using thermogravimetric analysis (TGA), flame test and calorimetry. Glue bond strength was analyzed with an automated bonding evaluation system (ABES) and the leaching of chemicals was determined according to EN84. Additionally, the surface characteristics of modified veneers were imaged with scanning electron microscopy (SEM). Results revealed notable differences in the thermal properties of SS and DAP, with DAP having better fire-retardant performance in all thermal testing. SS also affected thermal properties and combustibility of modified veneers, but the effect was only moderate compared to DAP. Neither SS or DAP had any significant resistance against leaching but ABES testing showed a notable increase in the glue bond strength of DAP modified veneers.

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The effect of firesorb as a fire retardant on the thermal properties of a heated soil

Journal of Thermal Analysis and Calorimetry ◽

10.1007/s10973-008-9420-5 ◽

2009 ◽

Vol 95 (3) ◽

pp. 837-842 ◽

Cited By ~ 11

Author(s):

J. Salgado ◽

M. I. Paz-Andrade

Keyword(s):

Thermal Properties ◽

Fire Retardant ◽

Heated Soil

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Thermal Degradation and Fire Retrandancy of Wood Impregnated with Nitrogen Phosphorus Flame Retardant

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.931-932.152 ◽

2014 ◽

Vol 931-932 ◽

pp. 152-156 ◽

Cited By ~ 1

Author(s):

Atchariyaphorn Phromsaen ◽

Prinya Chindaprasirt ◽

Salim Hiziroglu ◽

Pornnapa Kasemsiri

Keyword(s):

Weight Loss ◽

Thermal Properties ◽

Thermogravimetric Analysis ◽

Thermal Degradation ◽

Degradation Rate ◽

Oxygen Index ◽

Fire Retardant ◽

Limiting Oxygen Index ◽

Running Water ◽

Nitrogen Phosphorus

In this research, the effect of diammoniumphosphate (DAP) as fire retardant additive during thermal degradation of wood samples from shorea obtuse (Dipterocarpaceae) has been investigated. Thermal properties of wood samples impregnated with DAP ranging from 0-40 %wt were characterized by thermogravimetric analysis (TGA) and limiting oxygen index (LOI). Leachability of DAP from impregnated samples kept under running water was also investigated. The results indicated that the rate of weight loss obtained from TGA reveal that impregnation of DAP reduced the degradation rate from 0.95%/°C to 0.56%/°C. Furthermore, LOI of woods specimens trended to be increase from 24.8 to 30.6 when they were treated with DAP having a range of 0-30 %wt. Based on the results of this study, wood samples impregnated with 30%wt of DAP can be classified as self-extinguishing materials and cloud meet the requirement for non-flammability in construction. The leachability test indicated that only trace amount of unreacted DAP leached from the samples.

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Effect of Chemical Treatment on Thermal Properties of Jute Fiber Used in Polymer Composites

Journal of Composites Science ◽

10.3390/jcs4030132 ◽

2020 ◽

Vol 4 (3) ◽

pp. 132

Author(s):

Sweety Shahinur ◽

Mahbub Hasan ◽

Qumrul Ahsan ◽

Julfikar Haider

Keyword(s):

Thermal Properties ◽

Polymer Composites ◽

Thermo Gravimetric Analysis ◽

Natural Fibers ◽

Fire Retardant ◽

Thermal Characterization ◽

Decomposition Temperature ◽

Jute Fiber ◽

Differential Scanning Calorimetric ◽

Gravimetric Analysis

In recent years, natural fibers, such as jute has gained significant research interest in order to fabricate fiber reinforced polymer composites. Chemical treatments are generally carried out on the raw fibers for making composites with improved properties. From a composite manufacturing point of view, it is important to understand how the treatments can affect the thermal properties of the jute fiber. In the present research, the effects of rot-retardant, fire-retardant and water-retardant treatments on thermal properties of the jute fiber were investigated. Fiber samples were collected from the middle portion of whole jute fiber. Thermo-gravimetric analysis (TGA) and differential scanning calorimetric (DSC) analysis were subsequently conducted on the jute fiber for thermal characterization. The results demonstrated a lower thermal decomposition temperature in the case of fire-retardant treated jute fiber but higher residue at above 400 °C, as compared to the raw and other treated fibers. In general, it was found that chemically treated fibers absorbed less heat, in contrast to the raw jute fiber and heat flow became negative in all cases of the treated fibers. This study provides important information about the thermal properties of the treated jute fibers for manufacturing polymer-based composite materials.

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