Shear strength distribution of district heating pipe under accelerated aging condition with respect to PU foam density

Kim, Hyung-Gyu; Kim, Jooyong; Lee, Haeyong; Yoon, Jonghun

doi:10.1016/j.polymertesting.2022.107567

Cited by 2 publications

(2 citation statements)

References 21 publications

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“…In this study, two materials were used: liquid A (Millionate MR-200), which is a polyisocyanate commonly used to make rigid polyurethane foam systems, and liquid B (Polyol (JKR-7631L)), which is a polyether containing water, catalysts, and silicone surfactants. When mixed these two materials, liquids A and B, react to form a rigid PU foam [45][46][47][48]. The materials are bought from PT Justus Kimiaraya, Indonesia, as the manufacturer of all polyurethane materials.…”

Section: Methodsmentioning

confidence: 99%

Excellent Hybrid Polyurethane-Graphite Filler Micro Powder as a Lightweight Structure

Nugroho,

Alandro,

Herianto

et al. 2023

J. Compos. Sci.

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Weight plays a significant role in the automotive and aerospace fields due to the demand of lightweight material structures. A lighter body in weight (BIW) and in structure can reduce fuel consumption, lessen emissions, and support the SDGs 9, 11, 12, and 13. Therefore, polyurethane (PU) foam is suitable for applications that require low weight. The characteristics of hybrid polyurethane-graphite micro were successfully evaluated in this study. Several tests have been used to characterize these structures, such as, compression, hardness, density, surface evaluation, and FTIR analysis. The results showed that the expansion and shrinkage variations lead to different shapes at specific ratios. Compression tests show that the highest value occurred at 0.84 kN, with a 4:1 ratio found in pure PU foam without any reinforcement. PU foam with 2% graphite filler showed the highest results at the 4:1 ratio with a value of 0.45 kN. Furthermore, the highest hardness test result was 37.7 SHD. Density testing indicates that the highest value is obtained from specimens with a 4:1 ratio of 0.077 g/cm3. FTIR testing reveals that adding graphite as a filler alters the chemical bonds during the formation of solid PU foam. Surface observations show that adding graphite as a filler influences the variation in material structure formation. All the evaluation has tended to conclude the present combination as suitable for lightweight structures applications.

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Section: Methodsmentioning

confidence: 99%

Excellent Hybrid Polyurethane-Graphite Filler Micro Powder as a Lightweight Structure

Nugroho,

Alandro,

Herianto

et al. 2023

J. Compos. Sci.

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show abstract

“…2 Foam material is a multifunctional new polyolefin material composed of solid phase and gas phase, 9 which has light weight, good plasticity, excellent elasticity, aging resistance, corrosion resistance, low temperature resistance, low cost, high specific strength, absorbing shock load, good thermal insulation, and sound absorption performance. [10][11][12][13][14][15] The interconnectivities of cells allow air to flow through them. Air flow viscosity, skeleton vibration, and thermal conductivity are considered as the main reasons for sound wave attenuation.…”

Section: Introductionmentioning

confidence: 99%

Rational design of a polypropylene composite foam with open-cell structure via graphite conductive network for sound absorption

Li,

Yang,

Yan

et al. 2024

Soft Matter

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Shear strength distribution of district heating pipe under accelerated aging condition with respect to PU foam density

Cited by 2 publications

References 21 publications

Excellent Hybrid Polyurethane-Graphite Filler Micro Powder as a Lightweight Structure

Excellent Hybrid Polyurethane-Graphite Filler Micro Powder as a Lightweight Structure

Rational design of a polypropylene composite foam with open-cell structure via graphite conductive network for sound absorption

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