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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Polyurethane derived from castor oil reinforced with long cotton fibers: Static and dynamic testing of a novel eco-friendly composite material

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Author(s):
da Costa, Romeu R. C. [1] ; Sato, Eduardo S. [2] ; Ribeiro, Marcelo L. [2] ; de Medeiros, Ricardo [3] ; Vieira, Andre F. C. [4] ; Guedes, Rui M. [5] ; Tita, Volnei [2]
Total Authors: 7
Affiliation:
[1] Parana Fed Tech Univ, Dept Mech Engn, UTFPR, Curitiba, Parana - Brazil
[2] Univ Sao Paulo, Sao Carlos Sch Engn, EESC USP, Dept Aeronaut Engn, Sao Paulo - Brazil
[3] Santa Catarina State Univ, Dept Mech Engn, UDESC, Florianopolis, SC - Brazil
[4] Univ Beira Interior, Electromech Engn Dept, Covilha - Portugal
[5] Univ Porto, Mech Engn Dept, Fac Engn, Porto - Portugal
Total Affiliations: 5
Document type: Journal article
Source: JOURNAL OF COMPOSITE MATERIALS; v. 54, n. 22 MAR 2020.
Web of Science Citations: 0
Abstract

A novel eco-friendly composite material made of polyurethane derived from castor oil reinforced with long cotton fibers was developed. A set of comparative analyses comprising static and dynamic tests was established using specimens made of castor oil-based polyurethane reinforced by glass fibers, and epoxy reinforced by glass and cotton fibers. The manufacturing method and estimation of fiber volume fraction of the specimens were described in detail. Tensile and flexural tests were performed to evaluate the mechanical performance of the novel laminate. Fractographic post-mortem examinations assessed the quality of the fiber-matrix interaction and allowed direct observation of the failure modes. Surface treatment of natural fibers appears necessary to improve the adhesion of the natural fibers to the matrix. Dynamic responses are discussed, considering natural frequencies and modal damping coefficients. In this context, the potentialities and the limitations of using the novel eco-friendly composite material as structural parts are discussed. (AU)

FAPESP's process: 12/01047-8 - DEVELOPMENT OF CRITERION FOR STRENGTH RESIDUAL PREDICTION OF COMPOSITE STRUCTURES DAMAGED BY IMPACT
Grantee:Ricardo de Medeiros
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 15/13844-8 - Finite element formulation and delamination models for composite materials.
Grantee:Marcelo Leite Ribeiro
Support type: Regular Research Grants