Moisture exchange in drying natural fabrics in a microwave electromagnetic field

Ol’shanskii, A. I.; Ol’shanskii, V. I.; Zhernosek, S. V.

doi:10.1007/s10891-013-0933-9

“…The greatest dielectric losses occur when the molecules of the substance irradiated are dipolar (e.g., H 2 O). In the presence of the high frequency electromagnetic field the molecules oscillate synchronously with it, and this causes heat to be generated through inter-molecular friction [1][2][3]. The textile Industry has investigated many uses for microwave energy from heating, drying, dye fixation, printing and curing of resin-finished fabrics.…”

Section: Introductionmentioning

confidence: 99%

Effect of Microwave Pretreatment on Dyeing Performance of Wool Fabric

Zhao¹

2017

JTEFT

View full text Add to dashboard Cite

An investigation was undertaken to study microwave pretreatment and dyeing process of wool fabric. Microwave pretreatment of wool fabric was carried out under variety of conditions in terms of the use of water, 50g/L urea, 100g/L urea in the treatment solution. The area shrinkage, surface morphology, crystallinity and dye ability of the pretreated wool fabric were measured. Effects of microwave fixation time and batching time before microwave fixation on K/S value were analyzed. Fixation, uniformity, color fastness, breaking strength and breaking extension of wool fabric were compared among cold batching fixation, microwave fixation and microwave fixation after pretreatment.

show abstract

“…The greatest dielectric losses occur when the molecules of the substance irradiated are dipolar (e.g., H 2 O). In the presence of the high frequency electromagnetic field the molecules oscillate synchronously with it, and this causes heat to be generated through inter-molecular friction [1][2][3]. The textile Industry has investigated many uses for microwave energy from heating, drying, dye fixation, printing and curing of resin-finished fabrics.…”

Section: Introductionmentioning

confidence: 99%

Untitled

2017

JTEFT

0

View full text Add to dashboard Cite

An investigation was undertaken to study microwave pretreatment and dyeing process of wool fabric. Microwave pretreatment of wool fabric was carried out under variety of conditions in terms of the use of water, 50g/L urea, 100g/L urea in the treatment solution. The area shrinkage, surface morphology, crystallinity and dye ability of the pretreated wool fabric were measured. Effects of microwave fixation time and batching time before microwave fixation on K/S value were analyzed. Fixation, uniformity, color fastness, breaking strength and breaking extension of wool fabric were compared among cold batching fixation, microwave fixation and microwave fixation after pretreatment.

show abstract

“…In [15][16][17][18], different opinions on the factors providing the intensifi cation of drying of a body in the case where it is subjected to the action of electromagnetic radiation are presented. It is commonly suggested that the indicated intensifi cation is mainly due to the following two factors: a) because of the absorption of electromagnetic radiation by the material of a body, the rate of transformation of the water in it into the vapor increases sharply; b) in the case of action of electromagnetic radiation on the body, the gradient of the temperature fi eld in it changes its direction and a pressure drop arises inside the body, which leads to a sharp increase in the density of the moisture moving to the surface of the body.…”

mentioning

confidence: 99%

Generalization of the Wet-Bulb Temperature Notion to the Case of Electromagnetic Drying

Afanas’ev

¹

,

Siplivyi

²

2016

J Eng Phys Thermophy

1

0

View full text Add to dashboard Cite

A method of estimating the stationary temperature of the surface a body blown over by air and subjected to the action of electromagnetic radiation, representing a generalization of the wet-bulb temperature notion to the case of electromagnetic drying, has been developed.Introduction. When a homogeneous plate is dried by the scheme shown in Fig. 1, the condition of heat and moisture insulation of the lower surface of the plate (x = d) means that the initial investigation object is a specimen of thickness 2d in which, due to the identity of the conditions at the boundaries x = 0 and x = 2d, there are no heat and moisture fl ows through the symmetry plane x = d. In the case of convective drying of such a plate, the following conditions are used as initial approximations:

show abstract

Moisture exchange in drying natural fabrics in a microwave electromagnetic field

Cited by 3 publications

References 1 publication

Effect of Microwave Pretreatment on Dyeing Performance of Wool Fabric

Effect of Microwave Pretreatment on Dyeing Performance of Wool Fabric

Untitled

Generalization of the Wet-Bulb Temperature Notion to the Case of Electromagnetic Drying

Contact Info

Product

Resources

About