High damping property of microcellular polymer prepared by friendly environmental approach

Dai, Xinhua; Liu, Zhimin; Wang, Yong; Yang, Guanying; Xu, Jie; Han, Buxing

doi:10.1016/j.supflu.2004.08.003

Cited by 42 publications

(32 citation statements)

References 16 publications

(17 reference statements)

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“…Based on Figure 3, the densities of flexible HDB are higher than the densities of rigid HDB due to the porosity structure. As mentioned in previous research (Dai et al, 2005), a higher cell density offers better damping. …”

Section: Density Analysissupporting

confidence: 62%

Vibration Transmissibility Study of High Density Solid Waste Biopolymer Foam

Latif¹,

Rus²

2014

J MECH ENG SCI

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Waste cooking oils are problematic to dispose of especially in the developed countries. In this paper, waste cooking oil is used as raw material to produce foam. The purpose of this study is to develop a high density solid biopolymer foam (HDB) by using a hot compression molding technique based on flexible and rigid cross-linking agents. Physical properties such as scanning electron microscopy (SEM) and vibration characteristics have been studied using a vibration transmissibility test according to the ASTM D3580-95 standard. Different thicknesses were examined during the fabrication of HDB to measure the vibration property. By using the linear vibration theory with a single degree of freedom, the resonance frequency of vibration transmissibility and damping ratios of HDB foam at variation excitation are acquired. The results show that HDB flexible foam gives a higher damping ratio to absorb vibration. The capability of the HDB flexible foam to absorb vibration is greater than rigid HDB. It was observed that no improvement was achieved by increasing the thickness of HDB to vibration transmissibility. Reducing the thickness of the HDB flexible foam gives an increment of a damping ratio up to 36%.

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Section: Density Analysissupporting

confidence: 62%

Vibration Transmissibility Study of High Density Solid Waste Biopolymer Foam

Latif¹,

Rus²

2014

J MECH ENG SCI

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“…[4] In this context, microcellular foams with controlled cell morphology are very attractive because they exhibit better impact resistance over conventional plastic foams having larger cells. [5][6] It is also noteworthy that foam stiffness is directly related to foam density and cell regularity. [7] While traditional foaming processes have mainly relied on hydrocarbons or fluorocarbons (CFCs) as physical blowing agents, efforts are now devoted to use more environmentally friendly gases.…”

Section: Introductionmentioning

confidence: 99%

Extrusion Foaming of Poly(styrene‐co‐acrylonitrile)/Clay Nanocomposites Using Supercritical CO₂

Urbanczyk

Alexandre

Detrembleur

et al. 2010

Macro Materials & Eng

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Supercritical CO2 has been used as a blowing agent to foam poly(styrene‐co‐acrylonitrile)‐based materials in a single screw extruder specially adapted to allow fluid injection. The cellular morphology depends on foaming temperature, more regular cells being obtained with decreasing extrusion temperature. In a second step, a natural and an organomodified nanoclay have been added for the purpose of imparting some flame resistance to the foamed material. The filler efficiency in reducing sample combustion rate appeared to be dependent on its delamination level inside the matrix and better results were obtained when the organomodified clay was first delaminated in the polymer in an efficient twin screw extruder using water assistance, prior to foaming in the single screw extruder.magnified image

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“…Meanwhile, the increase of viscosity during foam production hinders the cells growth and thus leading to smaller cell size formation [6], [18]. Furthermore, it was reported that cellular structure with smaller cell size and higher cell density formation could improved the damping performance in composite [29]. Hence, the foam composites designed and developed in this study may have a better damping property as compared with pure flexible PU foam.…”

Section: E Microstructure Of Foam Compositesmentioning

confidence: 88%

Study of Flexible Polyurethane Foams Reinforced with Coir Fibres and Tyre Particles

Shan¹,

Idris²,

Ghazali³

2012

IJAPM

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Abstract-In this paper, the use of coir fibres and tyre particles, as fillers reinforced the flexible polyurethane (PU) foams were developed and analyzed. The characteristics of fillers were examined by SEM, XRF and TGA. There are five types of foam composites were produced by one-shot free rising method in closed mould. The results of XRF trace of CH 2 revealed more than 99% in coir is organic compounds whereas 96.9% in tyre are formed by aromatic oil, carbon black and rubber hydrocarbon (RHC). Besides, the results of thermal analysis indicated coir fibres and tyre particles are suitable to use as fillers for PU foams since they have high decomposition temperature, which is 250°C for coir and 350°C for rubber elements in tyre. During foam composites production, the viscosity created causes only 2.5wt% of fillers was added to flexible PU foams in this study. The viscosity damage the foaming ability and foaming rate of composites. However, the results of morphology studied shown foam composites having cellular structure of smaller cell size and thus having higher cell density. This type of structure may provide a better damping for energy absorption according to literatures.Index Terms-Coir fibres, flexible polyurethane foam, recycled tyre, structure.

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High damping property of microcellular polymer prepared by friendly environmental approach

Cited by 42 publications

References 16 publications

Vibration Transmissibility Study of High Density Solid Waste Biopolymer Foam

Vibration Transmissibility Study of High Density Solid Waste Biopolymer Foam

Extrusion Foaming of Poly(styrene‐co‐acrylonitrile)/Clay Nanocomposites Using Supercritical CO₂

Study of Flexible Polyurethane Foams Reinforced with Coir Fibres and Tyre Particles

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High damping property of microcellular polymer prepared by friendly environmental approach

Cited by 42 publications

References 16 publications

Vibration Transmissibility Study of High Density Solid Waste Biopolymer Foam

Vibration Transmissibility Study of High Density Solid Waste Biopolymer Foam

Extrusion Foaming of Poly(styrene‐co‐acrylonitrile)/Clay Nanocomposites Using Supercritical CO2

Study of Flexible Polyurethane Foams Reinforced with Coir Fibres and Tyre Particles

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Extrusion Foaming of Poly(styrene‐co‐acrylonitrile)/Clay Nanocomposites Using Supercritical CO₂