APPLICATION OF PCM BINDED WITH RESINE ON A COMPOSITE MATERIAL MADE OF A POLYESTER NONWOVEN AND A JUTE FABRIC RESISTIVE LAYER

Abstract

Noise is an important concern nowadays. Thermal regulation is also an interesting issue which can be partially solved or improved by textiles. Thermal and acoustic conditioning of rooms can be achieved bymeans of different materials. Fibrous textile materials can be used for both purposes. In this work, PCM micro-capsules are applied by flat printing method on a jute fabric which is used as a resistive layer of a fibrous composite. PCM thermal properties on fabrics have been widely reported. However, The variations on acoustic isolation have not been reported nowadays.The aim of this study is to determine whether there is any alteration due to the preence of PCM on a textile surfece. The sound absorption coefficient of the obtained samples is measured using a standing wave tube. Results show that the application of these micro-capsules boosts the sound absorption coefficient of the composite material, and that the temperature does not affect to this characteristic. In this work we domonstrate that PCM presence improves the acoustic response of the system and it is not anly due to the presence of a binder but also improves whan PCM have been applied. Apparantly there is no differennce on the behaviour depending on the temperature what evidences a change in the phase is not latering the acoustic response.

Keywords

• sound absorbtion
• fibrous absorber
• acoustic conditioning
• thermal