scholarly journals Damping Properties of Natural rubber/ Epoxidized Natural Rubber composites with different fillers

2018 ◽  
Author(s):  
Yueqiong Wang ◽  
Lusheng Liao ◽  
Hongtu Lin ◽  
Fuquan Zhang ◽  
Jieping Zhong ◽  
...  
Keyword(s):  
Natural Rubber ◽  
Epoxidized Natural Rubber ◽  
Damping Properties ◽  
Rubber Composites ◽  
Natural Rubber Composites

PHASE-CHANGE MATERIAL: NATURAL RUBBER COMPOSITES FOR HEAT STORAGE APPLICATIONS

2020 ◽  
Vol 93 (1) ◽  
pp. 208-221 ◽  
Author(s):  
Minna Poikelispää ◽  
Sasu Ruokangas ◽  
Mari Honkanen ◽  
Minnamari Vippola ◽  
Essi Sarlin
Keyword(s):  
Natural Rubber ◽  
Phase Change ◽  
Thermal Energy ◽  
Elevated Temperatures ◽  
Storage Capacity ◽  
Heat Storage ◽  
Damping Properties ◽  
Rubber Composites ◽  
Good Ability ◽  
Natural Rubber Composites

ABSTRACT Global warming and environmental awareness in general have increased the research into thermal energy storage fields. Phase-change materials (PCMs) are efficient in storing thermal energy because of their high latent heat during the phase change. As the phase change is often based on the melting of the PCM, they need to be encapsulated, for example, by dispersing the PCM to a polymer matrix. In this study, the feasibility of the use of paraffin–natural rubber composites in applications requiring both the good ability to store heat energy and good vibration-damping properties is studied. This includes studies on PCM concentration and the microencapsulation of the PCM. It was found that the heat storage capacity increases with increasing PCM content, although the theoretical maximum capacity is not achieved because the PCM is released during vulcanization and the paraffin blooms. In addition, the loss factor was found to be increased at elevated temperatures, indicating improved damping properties. The encapsulation of PCM is found to have a positive influence on the heat storage capacity and the mechanical and damping properties of the rubber compound.

Graphene networks and their influence on free-volume properties of graphene–epoxidized natural rubber composites with a segregated structure: rheological and positron annihilation studies

2015 ◽  
Vol 17 (18) ◽  
pp. 12175-12184 ◽  
Author(s):  
Canzhong He ◽  
Xiaodong She ◽  
Zheng Peng ◽  
Jieping Zhong ◽  
Shuangquan Liao ◽  
...  
Keyword(s):  
Natural Rubber ◽  
Positron Annihilation ◽  
Free Volume ◽  
Epoxidized Natural Rubber ◽  
Interfacial Region ◽  
Rubber Composites ◽  
Natural Rubber Composites ◽  
Volume Properties ◽  
Geometric Confinement ◽  
Segregated Structure

The motion of ENR chains is retarded by the geometric confinement of “GE networks”, producing a high-density interfacial region in the vicinity of GE nanoplatelets.

Cogon Grass Fiber-Epoxidized Natural Rubber Composites

2013 ◽  
Vol 747 ◽  
pp. 375-378 ◽  
Author(s):  
Chaiwat Ruksakulpiwat ◽  
Wasaphon Wanasut ◽  
Apikiat Singkum ◽  
Ruksakulpiwat Yupaporn
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Natural Rubber ◽  
Acid Treatment ◽  
Treatment Time ◽  
Treatment Method ◽  
Epoxidized Natural Rubber ◽  
Rubber Composites ◽  
Elongation At Break ◽  
Natural Rubber Composites

This research shows a great potential of cogon grass fiber to be used as a reinforcement in epoxidized natural rubber composites. The thermal and mechanical properties of cogon grass fiber-epoxidized natural rubber composites were studied. The chemical treatment of cogon grass fiber to be used as a reinforcing filler was revealed. Effects of fiber treatment method and treatment time of cogon grass fiber on thermal properties of the fibers and their composites were elucidated. The addition of cogon grass fiber into epoxidized natural rubber (ENR) improved the mechanical properties of the composites.The result indicated that alkaline treatment followed by acid treatment of cogon grass fiber led to an increase in thermal decomposition temperature and mechanical properties of the composites more than that without acid treatment. With increasing the amount of fiber, tensile strength of ENR composites were significantly increased while elongation at break was insignificantly changed. ENR with the addition of 4-Amino-6-hydroxy-2-mercaptopyrimidine monohydrate as coupling agent (ENRC) was shown to have higher tensile strength, modulus at 200% elongation and elongation at break than ENR. Improved mechanical properties were also obtained in ENRC composites compared to those of ENR composites.

scholarly journals Compatibility-tuned distribution of nanoparticles in co-continuous rubber structures toward microwave absorption enhancement

RSC Advances ◽  
2017 ◽  
Vol 7 (2) ◽  
pp. 1093-1100 ◽  
Author(s):  
Lefan Li ◽  
Pengfei Zhao ◽  
Yongyue Luo ◽  
Heping Yu ◽  
Jinlong Tao ◽  
...  
Keyword(s):  
Carbon Black ◽  
Natural Rubber ◽  
Microwave Absorption ◽  
Absorption Capacity ◽  
Epoxidized Natural Rubber ◽  
Absorption Enhancement ◽  
Rubber Composites ◽  
Rubber Blends ◽  
Novel Approach ◽  
Natural Rubber Composites

Carbon black incorporated natural rubber/epoxidized natural rubber composites with enhanced microwave absorption capacity have been designed by a novel approach of compatibility-tuned nanoparticles distribution in co-continuous rubber blends.

Possible use of gypsum waste from ceramics industry as semi-reinforcing filler in epoxidized natural rubber composites

2019 ◽  
Vol 22 (1) ◽  
pp. 285-294 ◽  
Author(s):  
Kumarjyoti Roy ◽  
Subhas Chandra Debnath ◽  
Naresh D. Bansod ◽  
Aphiwat Pongwisuthiruchte ◽  
Thanakorn Wasanapiarnpong ◽  
...  
Keyword(s):  
Natural Rubber ◽  
Epoxidized Natural Rubber ◽  
Rubber Composites ◽  
Natural Rubber Composites ◽  
Ceramics Industry ◽  
Reinforcing Filler
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