scholarly journals Improve Thermal Insulation And Physical Properties Of The Iraqi Plaster Using Natural Additives

2012 ◽  
Vol 9 (1) ◽  
pp. 21-28
Author(s):  
Faazeh Ghareib ◽  
Talib Abd-Zeid ◽  
Ali Atshan ◽  
Zainab Al-Sharify ◽  
Mona Al-Ouza
Keyword(s):  
Physical Properties ◽  
Thermal Insulation ◽  
Natural Additives

Investigation of thermo-physical properties of thermal insulation coating

2017 ◽  
Author(s):  
Michal Kopčok ◽  
Jozefa Lukovičová ◽  
Jozef Kačur ◽  
Gabriela Pavlendová
Keyword(s):  
Physical Properties ◽  
Thermal Insulation ◽  
Insulation Coating ◽  
Thermo Physical Properties

Effects of boric acid addition and sintering temperature on the thermal conductivity of perlitebased insulation materials

2020 ◽  
Vol 62 (4) ◽  
pp. 408-412
Author(s):  
Yuksel Palaci
Keyword(s):  
Thermal Conductivity ◽  
Physical Properties ◽  
Boric Acid ◽  
Thermal Insulation ◽  
Sintering Temperature ◽  
Direct Relation ◽  
Insulation Materials ◽  
Acid Addition ◽  
Composition Characteristics

Abstract In this study, the variation of thermal conductivity and density of 15 wt.-% boric acid - 85 wt.-% sepiolite, 30 wt.-% boric acid - 30 wt.-% sepiolite - 40 wt.-% perlite, 30 wt.-% boric acid - 30 wt.-% cordierite - 40 wt.-% perlite and 30 wt.-% boric acid - 30 wt.-% alumina - 40 wt.-% perlite compositions at 700 °C and 900 °C sintering temperatures were investigated. The results show that increasing the amount of boric acid and decreasing the sintering temperature lead to an improvement in thermal insulation properties. There is a direct relation between the thermal conductivity and density of the specimens. Both physical properties change with a change in the sintering temperature and the composition characteristics. Minimum thermal conductivity has been observed in a specimen consisting of 30 wt.-% boric acid - 30 wt.-% alumina - 40 wt.-% perlite.

Natural Materials for Thermal Insulation and Passive Cooling Application

2015 ◽  
Vol 666 ◽  
pp. 1-16 ◽  
Author(s):  
Anna Laura Pisello ◽  
Federica Rosso
Keyword(s):  
Physical Properties ◽  
Thermal Insulation ◽  
Critical Analysis ◽  
Numerical Data ◽  
Energy Performance ◽  
International Standards ◽  
Passive Cooling ◽  
Natural Materials ◽  
Outdoor Spaces ◽  
Indoor And Outdoor

In this chapter a critical analysis about natural materials to enhance energy performance and thermal comfort in indoor and outdoor spaces is dealt with. In particular, thermal insulation and passive cooling application in buildings are analyzed. The physical properties permitting to achieve these benefits are presented, as well as the method and the international standards to measure them. Benefits deriving from these materials’ employment as insulation layers or buildings envelope in general of, or in the case of urban paving, are described and then the single materials are illustrated.Experimental and numerical data, as reported in the bibliography, support the dissertation with examples from the most recent research contributions.

Research on Properties of Aramid Fiber Needle-Punched Nonwoven Fabrics

2011 ◽  
Vol 332-334 ◽  
pp. 1253-1256
Author(s):  
Lei Shi ◽  
Xu Pin Zhuang ◽  
Xiao Ning Jiao ◽  
Men Qin Li ◽  
Hong Jun Li ◽  
...  
Keyword(s):  
Physical Properties ◽  
Thermal Insulation ◽  
High Performance ◽  
Aramid Fiber ◽  
Acoustic Absorption ◽  
Absorption Property ◽  
Insulation Property ◽  
Nonwoven Fabrics ◽  
Acoustic Insulation ◽  
Thermal Insulation Property

Aramids fibers are among the best known of the high-performance, synthetic, organic fibers. Needle-punched nonwoven fabrics with various structures were manufactured and their physical properties, structure, thermal insulation property and acoustic absorption property were examined. The results show that the aramid fiber needle-punched nonwoven fabrics possess good performance at thermal and acoustic insulation besides light mass and inherent flame-resistant.

scholarly journals Factors for Eco-Efficiency Improvement of Thermal Insulation Materials

2016 ◽  
Vol 678 ◽  
pp. 1-13 ◽  
Author(s):  
Jun Kono ◽  
Yutaka Goto ◽  
York Ostermeyer ◽  
Rolf Frischknecht ◽  
Holger Wallbaum
Keyword(s):  
Life Cycle ◽  
Physical Properties ◽  
Production Process ◽  
Environmental Impacts ◽  
Thermal Insulation ◽  
Foam Glass ◽  
Insulation Material ◽  
Contributing Factors ◽  
Insulation Materials ◽  
Thermo Physical Properties

Thermal insulation material is an important component to reduce the environmental impact of buildings through the reduction of energy consumption in the operation phase. However, the material itself has embodied environmental impacts for the value it provides. Eco-efficiency is a method that quantifies relation between the environmental performance and the created value of a product system. This study investigated contributing factors of the eco-efficiency of thermal insulation materials to support decision making of material manufacturers. For the improvement of eco-efficiency, the assessment was made in two scopes: investigating the contributing factors of impact caused at production processes; and thermal performance through thermo-physical properties. For quantifying environmental impacts, cradle-to-grave life cycle assessment (LCA) of each materials were made. The life cycle impact assessment (LCIA) indicators used were ReCiPe H/A and global warming potential (GWP100a). For the assessment of production process, the inventories of the materials were assigned to six categories: heat, chemicals, electricity, transportation, raw materials and wastes. Among the assessed materials, contribution of electricity and heat within the production process was large for foam glass which had the highest potential to improve the eco-efficiency which was by factor 1.72. The analysis on relation between thermo-physical properties and eco-efficiency based on product data of the materials highlighted the importance of density as an indicator upon development and use. Althoughdensity often gains less attention,the finding suggested the effectiveness of improving the efficiency by having lower density without compensating the performance of the materials.

scholarly journals Aging Model for Cane Fiberboard Overpack in the 9975 Shipping Package

2010 ◽  
Author(s):  
W. L. Daugherty ◽  
S. P. Harris
Keyword(s):  
Physical Properties ◽  
Thermal Insulation ◽  
Thermal Aging ◽  
Additional Data ◽  
Impact Resistance ◽  
Radioactive Material ◽  
Aging Model ◽  
Severe Environments ◽  
Over Time

Many radioactive material shipping packages incorporate a cane fiberboard overpack for thermal insulation and impact resistance. Mechanical, thermal, and physical properties have been measured on cane fiberboard following thermal aging in various temperature/humidity environments. Several of the measured properties change significantly over time in the more severe environments, while other properties are relatively constant. Changes in each of the properties have been fit to a model to allow predictions of degradation under various storage scenarios. Additional data are being collected to provide for future refinements to the models.

The secret of egg white fabric: an investigation of its fabrication and properties

2021 ◽  
pp. 004051752110654
Author(s):  
Mei Yu Yao ◽  
Yin Shan Lau ◽  
Li Li
Keyword(s):  
Physical Properties ◽  
Thermal Insulation ◽  
Economic Efficiency ◽  
Oral Communication ◽  
Production Method ◽  
Egg White ◽  
Modern Technology ◽  
Color Fastness ◽  
Sustainable Products ◽  
Regional Features

The egg white fabric of the Dong Minority exemplifies their wisdom and represents rich regional features. It is renowned for its superior properties, especially its fabulous luster and excellent handle. However, the production method is rarely documented and instead has been handed down mostly by oral communication, and thus it is shrouded in mystery. In addition, due to low economic efficiency, a secret prescription and the challenges brought about by modern technology, this unique ethnic costume is threatened by extinction. Should this traditional handicraft be preserved or sacrificed? In this study, the secret of egg white fabric is solved by investigating its fabrication and properties. It is obvious that making egg white fabric involves complicated handiwork and numerous processes, including dyeing, fixation, brightening and starching; nevertheless, it has good physical properties. The experimental results indicated that egg white fabric has excellent texture, good thermal insulation, abrasion property and color fastness to laundering. Hence, this provides valuable inspiration for designers and manufacturers to produce unique and sustainable products.

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