Embedded Eggshells as a Bio-Filler in Natural Rubber for Thermal Insulation Composite Foams

2015 ◽  
Vol 31 (3) ◽  
pp. 189-205 ◽  
Author(s):  
Nuchnapa Tangboriboon ◽  
Wasirin Pannangpetch ◽  
Khomkrit Aranyik ◽  
Karat Petcharoen ◽  
Anuvat Sirivat
Keyword(s):  
Natural Rubber ◽  
Thermal Insulation ◽  
Composite Foams

Thermal Insulation Performances of Plaster Composites Based on Embedding Natural Rubber Latex Compound

2021 ◽  
Vol 904 ◽  
pp. 441-446
Author(s):  
Nuchnapa Tangboriboon ◽  
Sarun Muntongkaw ◽  
Sompratthana Pianklang
Keyword(s):  
Natural Rubber ◽  
Thermal Insulation ◽  
Water Solubility ◽  
Testing Machine ◽  
Natural Rubber Latex ◽  
Cold Weather ◽  
Mechanical And Thermal Properties ◽  
Rubber Latex ◽  
Universal Testing ◽  
Cost Of Energy

Adding 0, 20, and 50 wt% natural-rubber latex compound into the plaster ceiling matrix affected to increase the physical-mechanical-thermal performance properties of plaster ceiling composites. Adding 50 wt% natural rubber latex compound into plaster composites can increase the superior adhesion of the nail-tensile resistance equal to 57.54 N and decrease thermal conductivity equal to 0.0634 W/m.K. In addition, adding natural rubber latex compounds into plaster composites can reduce water solubility, brittleness, impact, and cost of energy consumption due to the exterior temperature. Adequate thermal insulation for roofing, ceiling, and wall systems also reduces radiative losses that chill occupants in cold weather, and reduce interior surface temperatures in the summer, thereby optimizing the comfort of building occupants. The mechanical and thermal properties of plaster composites were investigated by using a Universal Testing Machine (UTM) and heat flow meter, respectively, measured according to TIS 1211-50, TIS 219-2522, and ASTM C518.

scholarly journals Evaluation of thermal insulation and mechanical properties of waste rubber/natural rubber composite

HBRC Journal ◽  
2012 ◽  
Vol 8 (1) ◽  
pp. 69-74 ◽  
Author(s):  
M.M. Abdel Kader ◽  
S.M. Abdel-wehab ◽  
M.A. Helal ◽  
H.H. Hassan
Keyword(s):  
Mechanical Properties ◽  
Natural Rubber ◽  
Thermal Insulation ◽  
Waste Rubber ◽  
Rubber Composite

Processing of Kaolinite and Alumina Loaded in Natural Rubber Composite Foams

2014 ◽  
Vol 30 (5) ◽  
pp. 595-604 ◽  
Author(s):  
Nuchnapa Tangboriboon ◽  
Surarit Samattai ◽  
Jirarat Kamonsawas ◽  
Anuvat Sirivat
Keyword(s):  
Natural Rubber ◽  
Composite Foams ◽  
Rubber Composite

Properties of Thermal Insulation from Durian Peel Fiber and Natural Rubber Latex

2012 ◽  
Vol 506 ◽  
pp. 571-574 ◽  
Author(s):  
Thanut Jintakosol ◽  
Supreyak Kumfu
Keyword(s):  
Thermal Conductivity ◽  
Natural Rubber ◽  
Thermal Insulation ◽  
Natural Rubber Latex ◽  
Rubber Latex ◽  
American Society

This research presented the studies on the production and properties of thermal insulation produced from durian peel fiber and natural rubber latex. The thermal insulation were made by spray the pre-treated natural rubber latex onto durian peel fiber in the fiber : binder ratios of 1:2, 1:3 and 1:4 to form squared thermal insulation with the size of 20 cm and 1.5 cm thickness. Thermal conductivity measured in accordance with American Society for Testing Materials standard was found to be 0.026 W /m K with density of 143 kg m-3 which closed to the commercial insulator. The success of this study shown that the thermal insulation made from durian peel fiber and natural rubber latex exhibited a good thermal insulation and extremely potential to instead of the synthesis fibrous insulator.

scholarly journals An experimental study on one-step and two-step foaming of natural rubber/silica nanocomposites

2020 ◽  
Vol 9 (1) ◽  
pp. 427-435 ◽  
Author(s):  
Hossein Bayat ◽  
Mohammad Fasihi ◽  
Yasser Zare ◽  
Kyong Yop Rhee
Keyword(s):  
Natural Rubber ◽  
Cell Size ◽  
Decomposition Temperature ◽  
Nano Silica ◽  
Foaming Agent ◽  
Silica Nanocomposites ◽  
Composite Foams ◽  
Lower Cell Density ◽  
One Step ◽  
Foaming Temperature

AbstractThe curing and cellular structure of natural rubber (NR)/silica composite foams were investigated. The presence of an activator in the rubber formulation significantly lowered the decomposition temperature of the azodicarbonamide foaming agent, which allowed foaming before NR curing. Therefore, two foam methods were designed: foaming initially at 90°C and then curing at 140°C, and foaming and curing simultaneously at 140°C. Two-step foaming generated a lower cell density and higher cell size. Incorporation of nano silica into NR increased the foam density, but decreased the cell size. The higher foaming temperature restricted the bubble growth because of a higher curing rate and inhibited cell coalescence.

scholarly journals Effect of coupling agent on the morphological characteristics of natural rubber/silica composites foams

e-Polymers ◽  
2019 ◽  
Vol 19 (1) ◽  
pp. 430-436 ◽  
Author(s):  
Hossein Bayat ◽  
Mohammad Fasihi
Keyword(s):  
Natural Rubber ◽  
Cell Size ◽  
Chemical Bond ◽  
Coupling Agent ◽  
Morphological Characteristics ◽  
Silica Content ◽  
Foam Density ◽  
Composite Foams ◽  
Strong Adhesion ◽  
Escape Path

AbstractThe effect of coupling agent on the morphological characteristics of natural rubber/silica composite foams with various silica contents was studied. Bis 3-triet-hoxysilylpropyl tetrasulfide (TESPT) was used as coupling agent in this system. It could make a chemical bond with the silica particles. By increasing the silica content, cell size of foams was reduced more that 50% and foam density was increased up to 40%. However, compatibilized composites demonstrated about 20% lower foam density and higher cell size. In this case, strong adhesion between the components prevented gas from escaping out. While, in the foams excluded coupling agent the weak adhesion between particles and rubber created an escape path for gas from the interface of components. So, lower cell size and higher density were achieved.

Mechanical and Thermal Properties of Toughened PLA Composite Foams with Modified Coconut Fiber

2016 ◽  
Vol 851 ◽  
pp. 179-185
Author(s):  
Thiti Kaisone ◽  
Nathdanai Harnkarnsujarit ◽  
Thanawadee Leejarkpai ◽  
Tarinee Nampitch
Keyword(s):  
Natural Rubber ◽  
Compressive Stress ◽  
Nucleating Agent ◽  
Mechanical And Thermal Properties ◽  
Coconut Fiber ◽  
High Fiber ◽  
Molding Method ◽  
Composite Foams ◽  
Rubber Phase ◽  
Coconut Fibers

Composite foams from PLA, natural rubber and modified coconut fibers was prepared employing a compression molding method, which is suitable for the fabrication of composites containing high fiber content. The results revealed that the incorporation of natural rubber into composite foams increases the compressive stress to 101.17 kN/m2. Further, a 10% wt increase of modified coconut fiber added into composite foams resulted in an increase of compressive stress to 105.24 kN/m2. The addition of modified coconut fibers in composite foams showed a slight decrease of the crystallization state, obtained by DSC results by about 1-3 oC. Thus, modified coconut fibers played a role as a nucleating agent. Moreover, the combination of modified coconut fibers in composite foams could lead to improved adhesion between the surface area of PLA matrix and the natural rubber phase.

Thermal Insulation Produced from Pineapple Leaf Fiber and Natural Rubber Latex

2012 ◽  
Vol 506 ◽  
pp. 453-456 ◽  
Author(s):  
Supreyak Kumfu ◽  
Thanut Jintakosol
Keyword(s):  
Thermal Conductivity ◽  
Natural Rubber ◽  
Thermal Property ◽  
Thermal Insulation ◽  
Natural Rubber Latex ◽  
Synthetic Fiber ◽  
Rubber Latex ◽  
Pineapple Leaf Fiber ◽  
American Society ◽  
Leaf Fiber

The objective of this study was to investigate the thermal property of thermal insulation board produced from admixtures of pineapple leaf fiber and natural rubber latex at different proportion level and the thermal property was evaluated based on the American Society for Testing Materials standard. Thermal insulation boards were fabricated using a hot pressing technique at a temperature of 150 °C under a pressure of 100 kg/cm2 for 5 min to form a squared thermal insulation with the size of 35 cm and 0.9 cm thickness. The thermal conductivity of the thermal insulation was 0.057 W /m K with density of 338 kg/m3. The success of this study primarily proclaims a high feasibility of producing thermal insulation from pineapple leaf fiber and natural rubber latex as a substitute for synthetic fiber.

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