Properties of epoxy/LNR foam using sodium bicarbonate as a gas generator

Hussein, Mohamad Saed; Teh, Pei Leng; Zainuddin, Firuz; Rahmat, Abdul Razak; Yeoh, Cheow Keat

doi:10.1063/5.0090698

Cited by 2 publications

(1 citation statement)

References 27 publications

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“…Apart from baking products, NaHCO3 is also used for many other purposes [41][42]. Hussein et al [43] uses NaHCO3 to make epoxy foam from liquid natural rubber. Using NaHCO3 to make epoxy is easier and more cost-effective.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Asphalt Mix Solubility with Sodium Bicarbonate Leavening in Vulcanized Rubber: A Regulatory-Compliant Approach

Nasruddin,

Setianto,

Lanjar

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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In this research, sodium bicarbonate (NaHCO3) was used as a leavening agent to create air voids in the rubber-vulcanized matrix. The air cavities formed will increase the solubility of rubber vulcanizate in the hot asphalt mixture. 4 and 5 per hundred rubber (phr) NaHCO3 were added to each rubber compound using an open mill. The rubber compound was then vulcanized at 130°C for 15 minutes. Rubber vulcanizate is produced from 4 and 5 phr NaHCO3, each added at 8% to a hot asphalt solution. As a comparison material to determine the performance of NaHCO3, a rubber compound formula was prepared without using NaHCO3. It was found that the AK-01 sample containing NaHCO3 at 4 phr had several characteristics that met the requirements of Indonesian rubber asphalt regulations, including a softening point of 59.7°C, kinematic viscosity at 135°C of 828 cSt, elasticity after recovery of 30%, storage stability, a softening point difference of 2.2°C, and elasticity after the return of the thin film oven test (TFOT) residue test of 40%.

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Section: Introductionmentioning

confidence: 99%

Enhancing Asphalt Mix Solubility with Sodium Bicarbonate Leavening in Vulcanized Rubber: A Regulatory-Compliant Approach

Nasruddin,

Setianto,

Lanjar

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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The Influence of Palm Oil-Based Zinc Stearate Application on Vulcanized Rubber: Analyzing Hardness, Tensile Strength, and Elongation at Break for Hand Grip Formulation Development

Setianto,

Nasruddin,

Astuti

et al. 2024

KEM

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Vulcanization of rubber compounds is a crucial step in the process of developing natural rubber end products. Selected components are then used to formulate a rubber compound, which is further treated to create vulcanized rubber. In this study, a palm oil-based zinc stearate compound (ZS) developed by the National Research and Innovation Agency (BRIN) was used as a replacement for ZnO and stearic acid, which were previously used as activator and co-activator in the process of vulcanization. The goal of this study was to create a compound made of rubber formulation for use in the hand grip. The zinc stearate applied in this study ranged from 4 to 6 phr. To examine the effect of applying zinc stearate to vulcanized rubber, three primary parameters - tensile strength, hardness, and elongation at break of the vulcanized rubber - were evaluated. The results of the tests revealed that adding zinc stearate at a loading rate of 4 phr gave the hardness value of 27 Shore A, the tensile strength of 19 MPa, and the elongation at break by 590%. With this mechanical characteristic, the formula was identified as the optimal choice for achieving a robust and deformation-resistant hand grip while ensuring user comfort.

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Properties of epoxy/LNR foam using sodium bicarbonate as a gas generator

Cited by 2 publications

References 27 publications

Enhancing Asphalt Mix Solubility with Sodium Bicarbonate Leavening in Vulcanized Rubber: A Regulatory-Compliant Approach

Enhancing Asphalt Mix Solubility with Sodium Bicarbonate Leavening in Vulcanized Rubber: A Regulatory-Compliant Approach

The Influence of Palm Oil-Based Zinc Stearate Application on Vulcanized Rubber: Analyzing Hardness, Tensile Strength, and Elongation at Break for Hand Grip Formulation Development

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