Cure characteristic and mechanical properties of natural rubber vulcanizates with digested rice husk ash (RHA)

2018 ◽  
Author(s):  
Norazura Ibrahim ◽  
Abdul Hadi Mohamad Shokri ◽  
Dzaraini Kamarun ◽  
Ahmad Faiza Mohd
Keyword(s):  
Mechanical Properties ◽  
Natural Rubber ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Cure Characteristic ◽  
Natural Rubber Vulcanizates

Mechanical and dynamic mechanical properties of rice husk ash-filled natural rubber compounds

2002 ◽  
Vol 83 (11) ◽  
pp. 2331-2346 ◽  
Author(s):  
H. M. Da Costa ◽  
L. L. Y. Visconte ◽  
R. C. R. Nunes ◽  
C. R. G. Furtado
Keyword(s):  
Mechanical Properties ◽  
Natural Rubber ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Dynamic Mechanical Properties ◽  
Dynamic Mechanical ◽  
Rubber Compounds

scholarly journals Green Natural Rubber Composites Reinforced with Black/White Rice Husk Ashes: Effects of Reinforcing Agent on Film’s Mechanical and Dielectric Properties

Polymers ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 882
Author(s):  
Praewpakun Sintharm ◽  
Muenduen Phisalaphong
Keyword(s):  
Mechanical Properties ◽  
Dielectric Properties ◽  
Natural Rubber ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Composite Films ◽  
Dry Weight ◽  
Semiconducting Polymer ◽  
White Rice ◽  
Dispersing Agent

Green natural rubber (NR) composites reinforced with black rice husk ash (BRHA)/white rice husk ash (WRHA), using alginate as a thickening and dispersing agent and crosslinking by CaCl2, was developed to improve mechanical, chemical and dielectric properties of NR-based films by using a latex aqueous microdispersion process. A maximum of 100 per hundred rubbers (phr) of rice husk ashes (RHAs) could be integrated in NR matrix without phase separation. Mechanical properties of the composite films were considerably enhanced, compared to the neat NR film. The composite films reinforced with WRHA demonstrated relatively better mechanical properties than those reinforced with BRHA, whereas the composites filled with BRHA demonstrated higher elongation at break. The crosslinking by CaCl2 improved the film tensile strength but lowered the film elasticity. The reinforcement strongly improved chemical resistance of the composite films in toluene. The films are biodegradable in soil, with weight loss of 7.6–18.3% of the initial dry weight after 3 months. Dielectric constant and dielectric loss factors of the composite films were enhanced with RHAs loading. According to the obtained properties, the composites offer potential for further development as stretchable conductive substrate or semiconducting polymer films for electronic applications.

Fabrication of Rice Husk Ash/Natural Rubber Composite

2011 ◽  
Vol 393-395 ◽  
pp. 92-96 ◽  
Author(s):  
Zong Qiang Zeng ◽  
He Ping Yu ◽  
Hong Chao Liu ◽  
Shuang Quan Liao ◽  
Zheng Peng
Keyword(s):  
Mechanical Properties ◽  
Rare Earth ◽  
Natural Rubber ◽  
Rice Husk ◽  
Coupling Agent ◽  
Rice Husk Ash ◽  
Testing Machine ◽  
Dynamic Mechanical Properties ◽  
Main Trend ◽  
Dynamic Mechanical

The preparation of rubber-based composite from agricultural by-product is the main trend to upgrade the performance of rubber and reduce the cost. In this work, the rice husk ash/natural rubber (RHA/NR) composites were prepared by latex mixing process using the RHA modified with rare earth coupling agent. The mechanical properties, dynamic mechanical properties, thermal stability and morphology of RHA/NR composites were analyzed by universal testing machine, dynamic mechanical analyzer, thermo gravimetric analyzer and scanning electron microscope. The results indicate that previous modification of RHA with rare earth coupling agent can improve the dispersion of RHA in NR matrix significantly and increase the interaction between RHA particles and NR matrix and thus upgrade the mechanical properties and anti-oxidative behaviors of RHA/NR composite. The RHA/NR composite of highest mechanical properties and anti-oxidative behaviors can be obtained with a RHA loading of 4 per hundred rubber.

Physical and Mechanical Properties of Cement/Natural Rubber Latex/Rice Husk Ash Composites

2015 ◽  
Vol 804 ◽  
pp. 124-128
Author(s):  
Nittaya Jaitanong ◽  
Tanapong Chaipunti
Keyword(s):  
Mechanical Properties ◽  
Portland Cement ◽  
Natural Rubber ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Natural Rubber Latex ◽  
Physical And Mechanical Properties ◽  
Ammonia Solution ◽  
Rubber Latex ◽  
Cement Ratio

The microstructure and mechanical properties of Portland cement (PC)- natural rubber latex (NRL)- rice husk ash (RHA) composites have been investigated. The proportions of PC-NRL-RHA composites with NRL to cement ratio (NRL/C) that use in this experiment were 0, 0.10, 0.15 and 0.20 respectively. Portland cement (PC) was partially replaced with rice husk ash at 20% by weight of binder. The rice husk ash (RHA) was ground for 180 minutes before using. Water to cement ratio (W/C) equal of 0.5 by weight not include water in NRL. Nonionic surfactant was added in cement before mixed with NRL. In addition, to provide latex from natural rubber, the ammonia solution is added into natural rubber. The specimens were casting in standard mold which samples size of 50x50x50 and 40x40x160 mm3 respectively. Moreover, the PC-NRL-RHA composites were cured in water for 3, 7 and 28 days at room temperature before measurement. Then, mechanical properties (compressive strength and flexural strength) and microstructure were studied.

Effect of alkaline treatment on physico-mechanical properties of black rice husk ash filled polypropylene biocomposites

2015 ◽  
Vol 57 (4) ◽  
pp. 370-376 ◽  
Author(s):  
Ahmad Adlie Shamsuri ◽  
Ahmad Khuzairi Sudari ◽  
Edi Syams Zainudin ◽  
Mazlina Ghazali
Keyword(s):  
Mechanical Properties ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Alkaline Treatment ◽  
Black Rice
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