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Studies on Thermal, Mechanical and Acoustic Properties of Jute Felt from Jute Caddies

Kazi Md. Ahmed Karim
Principal Scientific Officer
Physics Department, Textile Physics Division, BJRI, Manik Mia Avenue, Dhaka-1207.

Md. Mohiuddin Mallick
Senior Scientific Officer
Physics Department, Textile Physics Division, BJRI, Manik Mia Avenue, Dhaka-1207.

Md. Golam Kibria
Scientific Officer
Physics Department, Textile Physics Division, BJRI, Manik Mia Avenue, Dhaka-1207.

Abstract/ Executive Summary:

Jute felt can be used to conserve heat energy in situation where loss of heat takes place through conduction. The objective of this project was to examine the suitability of jute felt as thermal insulation materials. For this reason, fiber were chemically treated and blended with acrylic and felt were produce in different ratioin the physics department of BJRI, during 1986. It was found that the acrylic blended felt has lower thermal conductivity i.e. higher thermal resistances; it can be more effective to prevent loss of heat energy. Moreover, since the treatment and blending of felts have resulted in the decrease of roughness, it causes less irritation on the skin. This types of blended felt may possibly used as a sort of cheap blanket, at least during emergencies.

Keywords: Felt, Thermal properties, Conduction, Jute waste

Location: Physics Department, Textile Physics Division, BJRI, Manik Mia Avenue, Dhaka-1207.

Start Date: 00-00-1986

End Date: 00-00-1986

Program Area: Postharvest and Agro-processing

Commodity: Jute

Objectives:

1.To produce needle punched felt from jute caddies.

2.To conduct felt trials to determine their suitability for use as general purposes as thermal insulating materials.

3.To study the thermal and mechanical behavior of the felt.

4.To study the effect of acrylic viscose fiber on thermal properties of felt.

Methodology:

At first caddies were scoured with mild alkali such as sodium carbonate at 60 degree temperature for an hour. It is then blended in two stages. The first stage of bleaching was done by sodium chlorate and formic acid for maintaining pH. The second stage of bleaching was carried out with hydrogen per oxide. These chemically treated caddies were divided into equal parts. One of the part of the caddies was blended with acrylic and other part was blended with viscose in the ratio of 80:20 in each case. Thereafter, the blended felt were made to study the effect of acrylic viscose fiber on the role of thermal conductivity. During thermal conductivity measurement Lee’s electrical apparatus was used whose unit was miliwatts per meter per degree centigrade. The machine required an electromechanical arrangement to obtain standard pressure of 6.9 Newton per meter square.

Source of Information: Annual Technical Report 1986: (150-153)

Article Link (Online Journal):

Funding Source:

1. Government

Budget: 30,000/- (Thirty Thousand Taka Only)

Total Budget (Tk.) : 30,000/- (Thirty Thousand Taka Only)

Achievement/Findings:

It was found that felt made from 80% caddies and 20% acrylic has lower thermal conductivity than the felt from 80% caddies and 20% viscose i.e. acrylic blended felt has more thermal resistance value than the viscose one. The bulk densities remaining the same after the application of softening agent has resulted in the decrease of thermal conductivity of 19% average value. Therefore, if other parameters in the determination of thermal insulation value remain the same. Felt from acrylic blended felt would be superior to the felt made from viscose blended.

Knowledge Management: Journal, Report/Proceedings