scholarly journals Preparation and Sound Insulation Performance of Superfine Metal Powder/Nitrile-Butadiene Rubber-Polyvinyl Chloride Microcellular Foaming Material

2019 ◽  
Vol 2019 ◽  
pp. 1-8
Author(s):  
Sheng Hu ◽  
Jun Cai ◽  
Guofeng Liao ◽  
Qiang Fu
Keyword(s):  
Metal Powder ◽  
Polyvinyl Chloride ◽  
Sound Insulation ◽  
Butadiene Rubber ◽  
Average Pore ◽  
Insulation Materials ◽  
Nitrile Butadiene Rubber ◽  
Microcellular Foaming ◽  
The Matrix ◽  
Insulation Performance

Lightweight sound insulation materials have received much attention. In this study, a series of superfine metal powder (SFM)/nitrile-butadiene rubber (NBR)-polyvinyl chloride (PVC) microcellular foaming materials were prepared with NBR-PVC as matrix and SFM as modifiers by employing the method of molding foaming. Analysis on the morphology of cross section, pore size, and pore distribution possessed by SFM/NBR-PVC was conducted by scanning electron microscopy (SEM), as well as the image processing software of Image-Pro. Then detailed discussion on the effect of SFM with different mass fractions in the matrix on the foaming quality was provided. In the meanwhile, the performance of sound insulation was tested by four-channel impedance tube system. The results show significant improvement for foaming quality and sound insulation performance of NBR-PVC microcellular foaming material through the addition of SFM. In comparison with the pure NBR-PVC materials, the microcellular foaming material exhibits the best performance of foaming quality and sound insulation when the SFM content in matrix is 30 wt%. It is shown that the average pore diameter and the foaming capacity decrease by 60% and 31%, respectively, while the surface density increases by 131%. In the meantime, the sound insulation index of SFM/NBR-PVC microcellular material increases by 7.2 dB to 30.5 dB, which conforms to the requirements of new lightweight sound insulation materials in modern time. Finally, the mechanism of the optimization conducted for sound insulation performance after the addition of SMF is explained.

Sound Insulation Provided by PET Fabric/PVC Composite Materials

2012 ◽  
Vol 450-451 ◽  
pp. 387-391
Author(s):  
Yue Fei Yao ◽  
Shan Li ◽  
Ya Qin Fu
Keyword(s):  
Composite Materials ◽  
Polyvinyl Chloride ◽  
Surface Density ◽  
Single Layer ◽  
Mechanical Tests ◽  
Double Layers ◽  
Sound Insulation ◽  
Small Surface ◽  
Pet Fabric ◽  
Insulation Performance

Single layer PET Fabric/polyvinyl chloride (PVC) composite materials and double layers PET fabric/polyvinyl chloride (PVC) composite materials with super thin thickness, lightweight, flexible and high strength were manufactured by means of the infusion technology under normal pressure. The sound insulation performance of these novel materials was evaluated with a two-channel acoustic analyzer. The structure and mechanical properties were investigated by mechanical tests and SEM observation. The results show that for the small surface density the double layers composite has better sound insulation performance than that of the single one. But with increment of surface density, the difference between them becomes small, and for the surface density larger than 1.3kg/m2, the sound insulation performance becomes inverse on layers, i.e., the single layer composite has better sound insulation performance than that of double layers one. Therefore, difference structures of composites can be developed based on sound wave features.

scholarly journals Indoor Acoustic Comfort Provided by an Innovative Preconstructed Wall Module: Sound Insulation Performance Analysis

2020 ◽  
Vol 12 (20) ◽  
pp. 8666
Author(s):  
Dimitra Tsirigoti ◽  
Christina Giarma ◽  
Katerina Tsikaloudaki
Keyword(s):  
Energy Performance ◽  
Bearing Steel ◽  
Sound Insulation ◽  
Frequency Noise ◽  
Indoor Environmental Quality ◽  
Exterior Surface ◽  
Acoustic Performance ◽  
Insulation Materials ◽  
Acoustic Comfort ◽  
Insulation Performance

The complicated nature of indoor environmental quality (IEQ) (thermal, visual, acoustic comfort, etc.) dictates a multi-fold approach for desirable IEQ levels to be achieved. The improvement of building shells’ thermal performance, imposed by the constantly revised buildings’ energy performance regulations, does not necessarily guarantee the upgrade of all IEQ-related aspects, such as the construction’s acoustic quality, as most of the commonly used insulation materials are characterized by their low acoustic performance properties. From this perspective the SUstainable PReconstructed Innovative Module (SU.PR.I.M.) research project investigates a new, innovative preconstructed building module with advanced characteristics, which can, among other features, provide a high quality of acoustic performance in the indoor space. The module consists of two reinforced concrete vertical panels, between which the load bearing steel profiles are positioned. In the cavity and at the exterior surface of the panel there is a layer of thermal insulation. For the scope of the analysis, different external finishing surfaces are considered, including cladding with slate and brick, and different cavity insulation materials are examined. The addition of Phase Change Materials (PCM) in different mix proportions in the interior concrete panel is also examined. For the calculation of the sound insulation performance of the building module the INSUL 9.0 software is used. The results were validated through an experimental measurement in the laboratory in order to test the consistency of the values obtained. The results indicate that the examined preconstructed module can cover the sound insulation national regulation’s performance limits, but the implementation of such panels in building constructions should be carefully considered in case of lower frequency noise environments.

Investigation and Optimization of Mechanical Properties of Nitrile-Butadiene Rubber/Polyvinyl Chloride/NiFe2O4 Nanocomposite

2019 ◽  
Vol 20 (11) ◽  
pp. 2247-2253
Author(s):  
Mahdi Ashrafi ◽  
Masood Hamadanian ◽  
Saeed Mirsafai ◽  
Keivan Torabi
Keyword(s):  
Mechanical Properties ◽  
Polyvinyl Chloride ◽  
Butadiene Rubber ◽  
Nitrile Butadiene Rubber

Compatibility and nonlinear viscoelasticity of polychloroprene/polyvinyl chloride blends with nitrile butadiene rubber as a compatibilizer

2015 ◽  
Vol 132 (35) ◽  
pp. n/a-n/a ◽  
Author(s):  
Guiyang Jiang ◽  
Chi Feng ◽  
Hongmei Zhang ◽  
Yong Zhang ◽  
Uichiro Yamagishi ◽  
...  
Keyword(s):  
Polyvinyl Chloride ◽  
Nonlinear Viscoelasticity ◽  
Butadiene Rubber ◽  
Nitrile Butadiene Rubber

scholarly journals Impact Modified Polyvinyl Chloride Based Thermoplastic Elastomers: Effect of Nitrile Butadiene Rubber and Graphene Oxide Loading

2021 ◽  
Vol 17 (1) ◽  
pp. 51-74
Author(s):  
Kuhanraj Vijayan ◽  
Mathialagan Muniyadi ◽  
Yamuna Munusamy
Keyword(s):  
Graphene Oxide ◽  
Impact Strength ◽  
Polyvinyl Chloride ◽  
Thermoplastic Elastomer ◽  
Thermoplastic Elastomers ◽  
Morphological Observation ◽  
Butadiene Rubber ◽  
Swelling Properties ◽  
Nitrile Butadiene Rubber ◽  
Micro Cracks

A new thermoplastic elastomer with improved impact and tensile properties was produced through melt blending of graphene oxide filled nitrile butadiene rubber (NBR-GO) and polyvinyl chloride (PVC) without the addition of plasticisers and thermal stabilisers. Nitrile butadiene rubber (NBR) compounds, with and without graphene oxide (GO) are prepared through latex compounding method and cured, prior to blending with PVC. The effect of NBR and NBR-GO loading on the process-ability and physico-mechanical properties of PVC blends were evaluated. The addition of NBR and NBR-GO improved tensile strength (TS), impact strength and swelling resistance of PVC. Addition of NBR also increased the stiffness of PVC due to higher elasticity of NBR as compared to PVC. Optimum impact strength, TS and swelling resistance was achieved with the addition of 10 wt. % NBR-GO. Good miscibility between NBR and PVC, and additional reinforcement by GO is responsible for enhancement of impact and TS. NBR-GO showed greater miscibility in PVC as compared to NBR as proven by morphological observation under scanning electron microscope. Morphological observation reveals that micro-cracks formation on PVC/30NBR surface which is responsible for low impact, tensile and swelling properties as compared to PVC/30NBR-GO composite.

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