calorimeter Articles
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Fire Safety Assessment of Halogen-free Flame Retardant Polypropylene Based on Cone Calorimeter
This study addresses the fire performance of polypropylene compounded with different flame retardants in the cone calorimeter tests and UL-94 burning tests. The parameters measured include heat release rate, time to ignition, smoke, and CO/CO2 yields, on the basis of which fire hazard analysis is carried out. By injection-molding different burn-rated polypropylene composites into television ...
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Exothermic reaction induced by high-density current in metals: possible nuclear origin
Since 1989, many experimenters worked on low-energy nuclear reactions (LENR). They face both an experimental and a theoretical dilemma: how to design simple and convincing experiments in a complex system and if the phenomenon has a nuclear origin, why do they observe no radiation. A rather simple water mass flow calorimeter was designed to study this phenomenon under different experimental ...
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Experimental Study of Suppressing PVC Fire with Water Mist using a Cone Calorimeter
Effect of water mist on the small-scale solid fuel PVC (poly vinyl chloride) fire in a confined space has been studied experimentally using a cone calorimeter. In this study, the combustion characteristics of PVC, and the interaction between the water mists and the diffusion flame in a confined space with proper ventilation control are studied under various conditions in the cone calorimeter. The ...
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Flame Retardancy of Thermoplastic Polyurethane and Polyvinyl Chloride by Organoclays
Thermooxidative stability and peak of heat release rates of thermoplastic polyurethane nanocomposites are improved by organoclays; but time to ignition of these composites is reduced. A cable with a thermoplastic polyurethane nanocomposite jacket does not pass a simple flame spread test by a Bunsen burner, indicating that the reduction of the peak of heat release rate does not prevent the flame ...
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On permeable porosity in bio-inspired fibre reinforced cementitious composites
Permeability plays an important role in governing the durability of concrete in deleterious environments. Previous permeability tests using water as the permeating medium have indicated that the addition of cellulose fibre is effective in reducing water permeability both in the presence and absence of stress and thereby making concrete more durable. In this paper, further evidence was sought of ...
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On permeable porosity in bio–inspired fibre reinforced cementitious composites
Permeability plays an important role in governing the durability of concrete in deleterious environments. Previous permeability tests using water as the permeating medium have indicated that the addition of cellulose fibre is effective in reducing water permeability both in the presence and absence of stress and thereby making concrete more durable. In this paper, further evidence was sought of ...
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Mechanistic Analysis of the Fire Performance of a Fire Retardant System
The behavior of a fire retardant in polypropylene is studied in order to improve the understanding of its activity in terms of its chemical behavior. The effect of a N-alkoxy hindered amine light stabilizer upon the fire performance of this system is also considered. The authors relate fire performance (UL 94, OI, NOI) and thermal analyses (TGA and thin film FTIR) results to cone calorimeter fire ...
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Synergism of GUP and Boric Acid Characterized by Cone Calorimetry and Thermogravimetry
Wood is treated with a new composite flame retardant, whose components guanyl urea phosphate (GUP) and boric acid (BA) impart flame retardance. The flame retarding behavior of these samples is measured by cone calorimeter. The thermal behavior of samples has been studied by differential thermogravimetry (DTG) and thermogravimetry (TG) in air. The activation energies for different stages of ...
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Combustion and Thermal Behavior of Polyurethane Acrylate Modified with a Phosphorus Monomer
A series of UV curable flame retardant resins were obtained by blending bis(2-acryloxyethyl) 2.6.7-trioxa-1-phosphabicyclo[2.2.2.]octane-4-methylol-1-oxide phosphate (MDMPE) in certain ratios with a commercial polyurethane acrylate (PUA). It has been found that the cured film shows good flame retardancy when the MDMPE is at 30% additive level. The cone calorimeter results show that the heat ...
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Assist Gas Measurement in Flare Stacks
The Customer The company manufactures solvents, polymers and intermediary chemicals. These products are sold worldwide and are used in the production of automobile interiors, steering wheels, paints, tires, adhesives, furniture, cosmetics and many other consumer and industrial products. The Process The Company’s site is large, thousands of acres, and its production units are ...
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Evaluation of the energetic potential of sewage sludge by characterization of its organic composition
The composition of sewage sludge and, thus, its energetic potential is influenced by wastewater and wastewater treatment processes. Higher or lower heating values (HHV or LHV) are decisive factors for the incineration/gasification/pyrolysis of sewage sludge. The HHV is analyzed with a bomb calorimeter and converted to the LHV. It is also possible to calculate the heating value via chemical ...
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Waste Fuel Case History
The Customer The company engages in the design, manufacture, and sale of machinery for decomposing petroleum-based materials. The company uses microwave technology for recovering hydrocarbons and fossil fuels from sources, such as tires, oil shale, capped wells, coal, automotive shredded residue, municipal solid waste, shale deposits, and waste oil streams. The Process Different products such ...
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Understanding the health and environmental risks of microplastics
Research has shown that tiny pieces of plastic are almost everywhere—in the air, water, food, and even in the human body—but it's unclear what risks nano- and microplastics pose to the environment or human health. Researchers are using lessons from nanotoxicology to begin investigating the risks of microplastics, according to a cover story in Chemical & Engineering News, the ...
By Matexcel
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