Experimental and theoretic studies on sound transmission loss of laminated mica‐filled poly(vinyl chloride) composites

Abstract

The effects of dioctyl phthalate and inorganic filler, mica, on the sound insulation property of poly(vinyl chloride) (PVC) were investigated in this work. The stiffness and mass laws, which are the common theoretic tools to predict the soundproof properties of materials, were used to analyze the sound transmission loss (STL). The experimental results revealed that the stiffness and mass laws can describe well the sound insulation property of PVC/mica composites. The stiffness and surface density are important factors influencing the improve-ment of STL. With the increase of content of mica, STL and resonance frequency, f mn , of PVC/mica composites increase. Moreover, the change of STL in the stiffnesscontrolled region is more obvious than that in the masscontrolled region, because the addition of mica in PVC leads to a greater increase in the stiffness.

Acoustically and thermally insulating epoxy foams prepared by non‐traditional expandable microspheres

“…For example, the foam density of the epoxy foam with 6 wt% microsphere content drastically decreases to only 0.46 × 10 3 kg/m 3 . Base on the mass law of acoustics, too low foam density is rather detrimental to the sound TL .…”

Recent advances in building acoustics: An overview of prediction methods and their applications

“…Wang et al [60] conducted an experimental study and revealed that the stiffness and mass laws well described the sound insulation property of polyvinyl chloride (PVC)/mica composites. Predictions models are also used in estimating sound transmission loss of multilayer structures.…”

An Optimization Study on Sound Insulation Property of Ethylene Vinyl Acetate/Hematite Coated Nonwovens

“…To this end, barite (BaSO 4 ) and magnetite (Fe 3 O 4 ) are commonly used. Besides, different kinds of inorganic fillers such as carbon black, nanoclay, mica , and calcite (CaCO 3 ) , though having low solid density, are also utilized. In spite of diversity in inorganic fillers, there is no study in the literature, in which hematite (Fe 2 O 3 ) is used as an inorganic filler for sound damping purposes.…”