Part 1, Rice hull nano silica as fire retardant in epoxy composites ; Part 2, Development and characterization of soy based plastics

Author

Mohammed Kafeel Ahamed

Abstract

"This thesis is divided into two parts, research effort described in each part focused on a different topic.

The first part was aimed at the evaluation of fire retardant properties of rice hull derived nano silica in epoxy composites. Previous studies in our laboratories have shown that the incorporation of silica derived rice nano size silica can enhance the mechanical properties of epoxy composite material. The effect of rice hull silica on fire retardation in epoxy composites made with commercially available epoxy resins and epoxidized allyl soyate (EAS) was examined. The silica used in the study was obtained through acid digestion followed by combustion at 700°C. Fire retardation imparted by silica composite was evaluated through test involving horizontal bum and cone calorimeter. Results of horizontal bum test showed that the composites with nano silica exhibited at markedly slower bum rate and suffered minimal mass loss compared to composites without nano silica. The cone calorimeter test results obtained were in agreement with the results of horizontal bum tests.

The second part of the thesis deals with the development and characterization of novel soy based plastics obtained through interactions of epoxidized allyl soyate (EAS) resin with soy protein isolate (SPI) or soy flour (SF). Mechanical, thermal properties and the environmental stability of the EAS-SPI and EAS-SF derived plastics were examined. Particular attention was paid to the effects of formulations on the properties of the materials. The mechanical test results showed that modulus and strength of the materials could be changed by changing formulation and materials with varying properties can be readily fabricated. Properties of EAS derived materials were compared with those of SPI- glycerol derived materials. In all cases, the EAS derived materials showed vastly superior mechanical properties than the SPI-glycerol materials. In addition EAS derived materials were much more resistant to accelerated aging than the SPI-glycerol derived materials. The results showed that EAS-SPI and EAS-SF formulations can yield highly flexible materials or very rigid high strength materials, which can be used for variety of indoor and outdoor applications"--Abstract, page iii.

Advisor(s)

Flanigan, V. J.

Committee Member(s)

Kapila, Shubhender
Chandrashekhara, K.

Department(s)

Mechanical and Aerospace Engineering

Degree Name

M.S. in Mechanical Engineering

Sponsor(s)

United States. Department of Housing and Urban Development
Missouri Soybean Merchandising Council
University of Missouri--Rolla. Center for Environmental Science and Technology (CEST)

Publisher

University of Missouri--Rolla

Publication Date

Fall 2006

Pagination

viii, 43 pages

Note about bibliography

Includes bibliographical references.

Rights

© 2006 Mohammed Kafeel Ahamed, All rights reserved.

Document Type

Thesis - Restricted Access

File Type

text

Language

English

Subject Headings

Nanostructured materials -- Mechanical propertiesRice hulls -- ResearchSilicaSoy flour

Thesis Number

T 9101

Print OCLC #

124066387

Recommended Citation

Ahamed, Mohammed Kafeel, "Part 1, Rice hull nano silica as fire retardant in epoxy composites ; Part 2, Development and characterization of soy based plastics" (2006). Masters Theses. 5891.
https://scholarsmine.mst.edu/masters_theses/5891