Thermomechnnical investigation of resin modified rubber

Dissertant

Abbas, Ali Aziz

University

University of Technology

Faculty

-

Department

Department of Chemical Engineering

University Country

Iraq

Degree

Master

Degree Date

2004

English Abstract

In the present work the miscibility of the novolac in NBR was investigated in detail.The miscibility process was almost established, and the resulting blends were characterized.

The characterization mainly included mechanical and physical measurements, which indicated great modifications of various parameters with the degree of blending.

In general blinding raises the density of NBR, this was also found to be the case for the mechanical properties like hardness and tensile strength.

However, the blending process was found to affect the.

elongation at breaking point in manner,, which resembled a peak-like behaviour.

This may be due to.

the dependence of the crosslinking reaction on the degree of blending.

Also, the introduction of novolac above certain limit seemed to help in stabilizing the.

NBR without the: need to go lo the sulfur vulcanization.

This work also includes the development of a polymer-matrix composite using the blends of the 30 and 70 phr as matrices.

The physical and mechanical nature of the composite series, (reinforced with, glass, kevlar, carbon, and' asbestos), was very much modified by the reinforcing process.

Theoretical calculations confirmed this behaviour, where all parameters were enhanced upon reinforcement with degrees depending very much upon the type of fiber.

The fiber-matrix bonding showed also such dependence, where kevlar needed maximum force to be pulled out of the matrix.

Finally, the ablation behaviour of the matrix and the composites were investigated.

Both blending and reinforcement showed an enhanced resistance to errosion quite explicitly.

Main Subjects

Chemistry

Topics

• Mechanical properties

• APA
• MLA
• AMA

Language

English

Data Type

Arab Theses

Record ID

BIM-305676