scholarly journals Hybrid Composite Laminates from UPE/ESOA Blend Reinforced with Chitosan and Bamboo Fiber: A Study of Mechanical and Thermal Properties

2020 ◽  
Vol 32 (6) ◽  
pp. 1321-1328
Author(s):  
Priyabrata Mohanty ◽  
Dibakar Behera ◽  
Shiv kumari Panda ◽  
Tapan Kumar Bastia ◽  
Prasanta Rath
Keyword(s):  
Composite Laminates ◽  
Unsaturated Polyester ◽  
Low Cost ◽  
Polymer Network ◽  
Filler Concentration ◽  
Mechanical And Thermal Properties ◽  
Thermosetting Polymers ◽  
Low Cost Housing ◽  
Enhanced Properties ◽  
Reinforcing Filler

The development of an inter-cross-linked polymer network of thermoset-thermoset blends have been extensively studied due to their enhanced mechanical properties. Among various polymer blends, modifications of unsaturated polyester (UPE) resin with epoxidized soybean oil acrylate (ESOA) combinations are an attractive route to promote the performance of the thermoset matrix and to overcome the inferior properties of both the components. Biodegradable and effectively accessible chitosan biodegradable waste material can shape the new stage for cutting-edge innovation items. Blend of both recyclable fibrous reinforcement and eco-friendly filler with two miscible thermosetting polymers will provide enhanced properties. At this time, chitosan up to 15 wt% (based on matrix weight) was utilized as reinforcing filler. At last, an interesting result was built up by confirming that chitosan filled chemically tailored bamboo and UPE/ESOA (80:20) biocomposites offered enhanced properties by 10 wt% of filler concentration with the most enhancements in whole properties. They have extensive variety of applications in the sector of low cost housing, structural projects and structural laminates.

The Effect of Fire Retardants on the Fire Resistance of Unsaturated Polyester Resin Coating

2016 ◽  
Vol 674 ◽  
pp. 277-282 ◽  
Author(s):  
Harri Lipiäinen ◽  
Qian Chen ◽  
Juha Larismaa ◽  
Simo Pekka Hannula
Keyword(s):  
Fire Resistance ◽  
Unsaturated Polyester ◽  
Low Cost ◽  
Fire Retardant ◽  
Cost Effective ◽  
Fire Retardants ◽  
Coating Materials ◽  
Performance Properties ◽  
Thermosetting Polymers ◽  
Negative Effect

Unsaturated polyester resins (UPRs) are most commonly used coating materials on steel among thermosetting polymers because of their low cost, easy application and good performance properties. However, UPRs show insufficient fire-resistance in respect of relatively high flammability accompanied by smoke production upon burning due to aromatic groups in the structure. Consequently, improving the fire retardancy of UPRs for extending their application becomes pivotal. Fire retardants (FRs) are widely used in polymers because they prolong the time to ignition, slow down the rate of flame spread, and generate less heat and smoke or toxic fume compared with the unmodified polymers. It has been a challenge to develop a cost effective, environmentally friendly fire retardant system which minimizes the negative effect on performance properties of the polymers [1 - 4].

scholarly journals A review on allotropes of carbon and natural filler-reinforced thermomechanical properties of upgraded epoxy hybrid composite

2021 ◽  
Vol 60 (1) ◽  
pp. 237-275
Author(s):  
Krushna Gouda ◽  
Sumit Bhowmik ◽  
Biplab Das
Keyword(s):  
Hybrid Composite ◽  
Low Cost ◽  
Extraction Process ◽  
Thermomechanical Properties ◽  
Neat Epoxy ◽  
Inorganic Filler ◽  
Nonrenewable Resource ◽  
High Performing ◽  
Thermosetting Polymers ◽  
Natural Filler

Abstract The scarcity of nonrenewable resource motivated inclination towards the environmental-friendly novel materials and development of waste natural filler-based hybrid composite is encouraged to fulfill the material demand. Epoxy resins-based composites are high-performing thermosetting polymers and have outstanding blending properties, good machinability, and low cost. Due to these advantages, thermoset plastic is largely used in a broad range of engineering applications; however, thermomechanical properties of neat epoxy are low. Thus, to enhance the thermomechanical properties of epoxy, it is interfaced materials such as graphite, graphene nanoplatelet, boron, carbon fiber, aluminium, silver, etc. Among various substances, graphene has been deliberated as an acceptable novel filler because of its exceptional properties. In addition to inorganic filler inclusion, natural filler/fiber like hemp, sisal, flax, bamboo, jute, etc. can be utilized in a higher percentage as biodegradable material. The present article assisted to improve thermomechanical properties of neat epoxy. This work identifies and addresses (i) processes used for graphene modification; (ii) treatment utilized for enhancing the binding properties of natural filler; (iii) various natural filler extraction process employed; (iv) neat epoxy modification; and (v) influence of different dimensions of fillers.

Evaluation of the Addition of α-Al2O3 on the Mechanical and Thermal Properties in Binding Geopolymer

2015 ◽  
Vol 820 ◽  
pp. 497-502 ◽  
Author(s):  
Danubia Lisbôa da Costa ◽  
Rosiane Maria da Costa Farias ◽  
Aluska Nascimento Simões Braga ◽  
Romualdo Rodrigues Menezes ◽  
Gelmires de Araujo Neves
Keyword(s):  
Thermal Analysis ◽  
Thermal Properties ◽  
Construction Industry ◽  
Total Mass ◽  
Mechanical And Thermal Properties ◽  
X Ray ◽  
Total Mass Loss ◽  
Alumina Addition ◽  
Enhanced Properties ◽  
Geopolymer Binder

Several years ago the study on modification of existing materials that have enhanced properties has gained prominence. In this scenario, the geopolymeric binders, currently widely used in the construction industry have emerged. Thus, this study aimed to evaluate the influence of alumina addition on the mechanical and thermal properties of metakaolin in geopolymer binder. The geopolymers were synthesized from mixtures of metakaolin/alumina and sodium hydroxide, pressed and characterized by diffraction of X-ray and differential thermal analysis and thermogravimetric. Two types of alumina were used in different amounts (14% and 7%) in order to evaluate the effect of the load binder obtained. It can be seen that the incorporation of alumina into the system caused an increase in strength of products obtained as well as a reduction in total mass loss of the sample , especially when the use of fine alumina.

“The Information Was Hard and Tough”: Low-Cost Housing Information in Pietermaritzburg, South Africa

Libri ◽  
2007 ◽  
Vol 57 (4) ◽  
Author(s):  
William Dansoh ◽  
Christine Stilwell ◽  
Athol Leach
Keyword(s):  
South Africa ◽  
Low Cost ◽  
Low Cost Housing
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