Preparation and Characteristics of Polystyrene/Attapulgite Composites Via In-siu Suspension Polymerization

Wang, Kunyan

doi:10.1051/matecconf/20166706095

MATEC Web Conf.

2016

DOI: 10.1051/matecconf/20166706095

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Preparation and Characteristics of Polystyrene/Attapulgite Composites Via In-siu Suspension Polymerization

Kunyan Wang

Abstract: Abstract.A series of polystyrene/attapulgite composites were synthesized through suspension polymerization. The composites were characterized by Fourier transform infrared spectroscopy, thermal gravimetric analysis, and X-ray diffraction. FTIR results show that there was no significant change in the peak positions and the peak intensity for polystyrene/attapulgite composites compared to the pure polystyrene. There is a rise in thermal stability of composites compared to pure polystyrene. Attapulgite acts as an… Show more

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Elastic and acoustic properties determination of epoxy/polystyrene/nanoclay/red mud waste hybrid composites by ultrasonic method

Oral,

Özmeral,

Ahmetli

et al. 2024

Polymer Composites

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Ultrasonic methods are more sensitive to defects such as voids, pores, and discontinuities that can diminish the true elastic and acoustic properties of materials compared to destructive testing. Therefore, the elastic properties and some acoustic properties of the epoxy phenol novolac modified with polystyrene (EPN‐PS) matrix‐based nano‐ and hybrid composites were determined for the first time using ultrasonic method. Montmorillonite‐type nanoclay (NC) and industrial red mud waste (RMW) at a rate of 1–4 and 15–35 wt% respectively, were used as fillers in the composite preparation. According to the results, the highest elastic coefficient values (L = 8.14 GPa, G = 1.76 GPa, K = 5.79 GPa and E = 4.80 GPa) were obtained in the EPN‐PS/NC1 (with 1 wt% NC) nanocomposite sample compared to the elastic properties of pure EPN and EPN‐PS, while the highest elastic coefficient values (L = 8.97 GPa, G = 2.19 GPa, K = 6.06 GPa, and E = 5.86 GPa) among hybrid composites (HC) were obtained for the HC35 containing 2 wt. % NC and 35 wt% RMW. Due to both its high elastic and good acoustic properties, wall panels and floors produced using HC35 hybrid composite can be used for sound insulation in noisy environments.Highlights First evaluation of the acoustic characteristics of epoxy phenol novolac modified with polystyrene‐nanoclay/red mud waste (EPN‐PS‐NC/RMW) composites. NC4 with 4 wt% nanoclay showed the lowest elastic and acoustic properties. Nanoclay ratio above 1 wt% reduces elastic and acoustic properties. The increasing RMW ratio in hybrid composites increases elastic properties. High elastic and acoustic properties make HC35 ideal for sound insulation.

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Elastic and acoustic properties determination of epoxy/polystyrene/nanoclay/red mud waste hybrid composites by ultrasonic method

Oral,

Özmeral,

Ahmetli

et al. 2024

Polymer Composites

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Packaging material-based polystyrene ZnFe2O4/clay nanocomposite: preparation, characterization and degradation studies

et al. 2022

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Multiscale Thermal Investigations of Graphite Doped Polystyrene Thermal Insulation

Lakatos

Csík

2022

Polymers

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Nowadays, to improve quality of life, to have a more comfortable life, in internal spaces we try to maintain conditions that are free from external environmental influences. Thus, existing as well as newly built houses have adequate interiors maintaining their temperature, warming, or cooling due to the environment compensation. One way to create this is to reduce the heat loss in buildings. An option to achieve this is the application of thermal insulations. Nowadays, the use of super insulation materials such as aerogel and vacuum insulation panels and other nano-structured insulations, such as graphite doped expanded polystyrene, is becoming increasingly justified. These are relatively new materials, and we know only a little about them. This paper presents research results based on temperature-induced investigations of nanostructured graphite expanded polystyrene, to reveal its thermal stability after long-term and short-term thermal annealing, simulating the ageing of the material. Firstly, with a differential scanning calorimeter, we will explore the thermal stability profile of the specimens. After this, the paper will present temperature-induced changes in both the thermal properties and the structure of the samples. We will also present changes in the thermal conductivity, modifications in the surface, and compressive property variation induced by thermal annealing. The samples were thermal annealed at 70 °C for 6 weeks, at 100 and 110 °C for 1 h. Besides the thermal conductivity measurements with Netzsch 446 heat flow meter equipment, we will present specific heat capacity measurement results executed with the same equipment. Moreover, sorption isotherms of the as-received and annealed samples were registered and completed with hydrophobic experiments, too. Furthermore, from the measurements, we showed that temperature should affect a significant change in the thermal conductivity of materials. Moreover, the changes in the graphite expanded polystyrene before and after thermal annealing were investigated by Scanning Electron Microscopy, as well as optical microscopy. The structural changes were further followed by an X-ray diffractometer and the IR absorption capability was tested, too.

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Preparation and Characteristics of Polystyrene/Attapulgite Composites Via In-siu Suspension Polymerization

Cited by 3 publications

References 8 publications

Elastic and acoustic properties determination of epoxy/polystyrene/nanoclay/red mud waste hybrid composites by ultrasonic method

Elastic and acoustic properties determination of epoxy/polystyrene/nanoclay/red mud waste hybrid composites by ultrasonic method

Packaging material-based polystyrene ZnFe2O4/clay nanocomposite: preparation, characterization and degradation studies

Multiscale Thermal Investigations of Graphite Doped Polystyrene Thermal Insulation

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