Studying the effect of Nano carbon black particles on the properties of tire tread

Dissertant

Nasir, Nassier Abd al-Husayn

Thesis advisor

Ulaywi, Jawad Kazim
Hamzah, Muhammad Sallab

University

University of Technology

Faculty

-

Department

Department of Materials Engineering

University Country

Iraq

Degree

Master

Degree Date

2011

English Abstract

-The use of polymer blends is an effective method for altering the performance of polymer materials and is widely employed in engineering plastics, rubber, and fiber materials.

Rubber blends are used for many reasons such as lowering the compound cost; ease of fabrication and to improve the performance of the industrial rubber.

styrene–butadiene rubber (SBR) and Natural rubber (NR) have been blended for a long time for these reasons.

In this study, 20 different rubber compounds were prepared by using SBR-1502 type of styrene–butadiene rubber and SMR-20 type of natural rubber in different proportions (0, 25, 50, 75 and 100) and each recipe was reinforced with carbon black (N220) at different ratios (20, 40, 60 and 80) pphr.

The mechanical properties – such as tensile strength, modulus at 100% elongation, elongation at break, hardness, wear, resilience, and physical properties such as- swelling, thermal conductivity, thermal diffusivity and specific gravity were studied.

The results show that the modulus at 100% elongation (MOD 100) and ultimate tensile strength increase with an increase of loading level of carbon black.

The maximum value achieved was at 60 pphr (CB), while elongation at break for all recipes increases with an increase of loading level of carbon black and the maximum value achieved was at 40 pphr (CB).

These properties increased with the increase of NR to SBR.

The hardness and wear properties of the NR/SBR blends increase with the increase of carbon black and with SBR increment.

The resilience decrease with increase of carbon black loading for all recipes and with the increase of SBR to NR.

The physical properties are significantly affected by the variables, so that the swelling of all recipes decreased with the increase of carbon black and with NR increment.

The thermal conductivity and thermal diffusivity were also increased with the addition of carbon black and decreased with the increase of NR.

The specific gravity for all recipes increased with the increase of carbon black loading level.

The optimum blend which achieved moderate between properties was (50 SBR/50 NR) loaded with 60 pphr carbon black.

Main Subjects

Materials Science , Minerals

Topics

• Mechanical properties

• APA
• MLA
• AMA

Language

English

Data Type

Arab Theses

Record ID

BIM-304950