Polyurethane waterproofing coating for building applications

Saxena, P.; Raut, K. G.; Srinivasan, S. R.; Sivaram, Swaminathan; Rawat, Rahul; Jain, Rajeev

doi:10.1016/0950-0618(91)90052-m

Cited by 10 publications

(4 citation statements)

References 0 publications

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“…Polyurethane is a good material becaue of its good solubility and coating property with spray process on the copper-plated fabric electrodes. 19,20 3. RESULTS AND DISCUSSION Figure 3a showed SEM images of morphology change of polyurethane layer according to a repetition of spray coating process.…”

Section: Methodsmentioning

confidence: 99%

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Fabric Active Transducer Stimulated by Water Motion for Self-Powered Wearable Device

Kwon

Kim

Park

et al. 2016

ACS Appl. Mater. Interfaces

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The recent trend of energy-harvesting devices is an adoption of fabric materials with flexible and stretchable according to the increase of wearable electronics. But it is a difficult process to form a core structure of dielectric layer or electrode on fabric materials. In particular, a fabric-based energy-harvesting device in contact with water has not been studied, though there are many challenging issues including insulation and water absorption in a harsh environment. So we propose an effective method to obtain an electrical energy from the water contact using our new fabric energy harvesting device. Our water motion active transducer (WMAT) is designed to obtain electrical energy from the variable capacitance through the movement and contact of water droplet. In this paper, we succeeded in generating an electrical energy with peak to peak power of 280 μW using a 30 μL of water droplet with the fabric WMAT device of 70 mm × 50 mm dimension. Furthermore, we specially carried out spray-coating and transfer processes instead of the conventional spin-coating process on fabric materials to overcome the limitation of its uneven morphology and porous and deformable assembly.

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Section: Methodsmentioning

confidence: 99%

“…Using the fabric material for the energy harvesting device, its mesh structure must be filled with flexible and stretchable polymer material having good insulation and planarization characteristics. Polyurethane is a good material becaue of its good solubility and coating property with spray process on the copper-plated fabric electrodes. , …”

Section: Methodsmentioning

confidence: 99%

Fabric Active Transducer Stimulated by Water Motion for Self-Powered Wearable Device

Kwon

Kim

Park

et al. 2016

ACS Appl. Mater. Interfaces

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“…It includes high energy absorption, higher resistance towards the destructive environment, maximum elongation capacity, thermal stability, and chemical resistance. Due to the low-cost durability and sustainability of PU coatings, they are widely used in a variety of applications (Saxena et al 1991). The proposed mechanism of polyurethane coating was based on the formation of a char layer.…”

Section: Polyurethane (Pu)mentioning

confidence: 99%

Morphology of wood degradation and flame retardants wood coating technology: an overview

Mali¹,

Sonawane

Patil

et al. 2021

International Wood Products Journal

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Flame retardants mitigate the threat of fire from inherently flammable wood and wood products responsible for sustaining a high standard of living. Wood is one of the aesthetically pleasing, highly sustainable as well as eco-friendly materials. It is not only an integral part of structures, but also the main source of home appliances, furniture, industrial applications, and offices all over the world. The coating provides protection to wood materials against outdoor weathering, photochemical degradation, and fire. Therefore, to minimize the degradation of wood for the increasing long life and survival ability, various coatings were synthesized and applied to enhance their performance for the wood application. This review provides a historical overview that leads to the structural properties of wood and the most promising surface treatments that will help pave the way for developing more effective and non-intrusive flame retardants in the future.

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“…Polyurethane foams are pioneers in the industry focused on their excellent mechanical characteristics [22]. These include high elongation capacity, large resistance in warlike environments, large energy absorption aptitude, thermal stability, versatility in one's products and applications, chemical resistance, profitability, and ability to contribute to the final product's effectiveness and longevity [23,24]. The work in 1937 of Bayer Otto and colleagues on IG Farben in Germany is one of the more notable achievements in PUR [25,26].…”

Section: Introductionmentioning

confidence: 99%

Influence of Microstructure on the Dynamic Behaviour of Polyurethane Foam with Various Densities

Boumdouha,

Louar

2023

J. Basic Appl. Sci.

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Polyurethane foam is reinforced with varying proportions of metal loads and other components to increase shock absorption and mechanical impact. The main objective is to develop high-performance polymeric materials based on polyurethane foam developed with different compositions and specific densities. We monitor the growth distances and temperatures of the polyurethane foam in time to reach the optimum formulations. We conduct static compression tests and investigate the effect of drop weight on the deformation of polyurethane foam structures by dropping a weight from a specified height. Dynamic collisions cause deformations of the polyurethane foam structure. After investigating the low weight, we found that polyurethane foams have a good absorption coefficient at certain frequencies. Dynamic stress-strain response curves are used to characterize different stress rates. High-stress levels and similar strains indicate a high resistance to shock. We follow the evolution of microstructure structures by scanning electron microscopy (SEM) to observe deformation and fracture behavior with reversibility and recovery.

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Polyurethane waterproofing coating for building applications

Cited by 10 publications

References 0 publications

Fabric Active Transducer Stimulated by Water Motion for Self-Powered Wearable Device

Fabric Active Transducer Stimulated by Water Motion for Self-Powered Wearable Device

Morphology of wood degradation and flame retardants wood coating technology: an overview

Influence of Microstructure on the Dynamic Behaviour of Polyurethane Foam with Various Densities

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