Bedoukian   RussellIPM   RussellIPM   Piezoelectric Micro-Sprayer


Home
Animal Taxa
Plant Taxa
Semiochemicals
Floral Compounds
Semiochemical Detail
Semiochemicals & Taxa
Synthesis
Control
Invasive spp.
References

Abstract

Guide

Alphascents
Pherobio
InsectScience
E-Econex
Counterpart-Semiochemicals
Print
Email to a Friend
Kindly Donate for The Pherobase

« Previous AbstractQualitative and quantitative analysis of a group of volatile organic compounds in biological samples by HS-GC/FID: application in practical cases    Next Abstract"Physiology, phylogeny, and functions of the TRP superfamily of cation channels" »

An Acad Bras Cienc


Title:Weathering Resistance of Waterborne Polyurethane Coatings Reinforced with Silica from Rice Husk Ash
Author(s):Monteiro WF; Miranda GM; Soares RR; Santos C; Hoffmann MS; Carone CLP; Lima V; Souza MF; Campani AD; Einloft SMO; Lima JE; Ligabue RA;
Address:"Graduate Program in Materials Engineering and Technology, PUCRS, Av. Ipiranga, 6681, Partenon, 90619-900 Porto Alegre, RS, Brazil. Institute of Exact and Technological Science, FEEVALE, ERS-239, 2755, 93525-075 Novo Hamburgo, RS, Brazil. Institute of Physics, USP, Av. Trab. Sao Carlense, 400, Parque Arnold Schimidt, 13566-590 Sao Carlos, SP, Brazil. NokXeller Microdispersions S.A., Rua Cai, 711, Vila Princesa Izabel, 94940-030 Cachoeirinha, RS, Brazil. School of Technology, PUCRS, Av. Ipiranga, 6681, Partenon, 90619-900 Porto Alegre, RS, Brazil. School of Science, PUCRS, Av. Ipiranga, 6681, Partenon, 90619-900 Porto Alegre, RS, Brazil"
Journal Title:An Acad Bras Cienc
Year:2019
Volume:20191125
Issue:4
Page Number:e20181190 -
DOI: 10.1590/0001-3765201920181190
ISSN/ISBN:1678-2690 (Electronic) 0001-3765 (Linking)
Abstract:"Waterborne polyurethanes (WPUs) are interesting materials for coatings when compared to solvent-based polyurethanes, once that reducing the concentration of volatile organic compounds that are harmful for human health and the environment. However, the WPU has low weathering resistance. In order to improve this behavior among others properties, inorganic fillers has been added in these systems. SiO2 particles from various sources, mainly, from agro-industrial waste, as rice husk has attracted the scientific and technological interest. In this study, the accelerated weathering essay was performed in waterborne polyurethane (WPU)/ silica (from rice husk ash) composites in order to evaluate the thermal and physical changes in these materials. These composites were prepared by two distinct methods: in situ polymerization and blending method. The highest resistance to thermal degradation and to accelerated weathering was reached with WPU/silica composites obtained by blending method due the interactions between SiO2 particles and the polymer matrices. Blending method for preparation WPU/silica composites proved to be a simpler and faster method, with no drawback for large scale application"
Keywords:
Notes:"PubMed-not-MEDLINEMonteiro, Wesley F Miranda, Gabriela M Soares, Rafael R Santos, Claudia A B Dos Hoffmann, Mauricio S Carone, Carlos L P Lima, Viviane DE Souza, Milton F DE Campani, Adriano D Einloft, Sandra M O Lima, Jeane E DE Ligabue, Rosane A eng Brazil 2019/11/30 An Acad Bras Cienc. 2019 Nov 25; 91(4):e20181190. doi: 10.1590/0001-3765201920181190. eCollection 2019"

 
Back to top
 
Citation: El-Sayed AM 2024. The Pherobase: Database of Pheromones and Semiochemicals. <http://www.pherobase.com>.
© 2003-2024 The Pherobase - Extensive Database of Pheromones and Semiochemicals. Ashraf M. El-Sayed.
Page created on 27-12-2024