An innovative approach to utilize waste silica fume from zirconia industry to prepare high performance natural rubber composites for multi-functional applications

2020 ◽  
Vol 81 ◽  
pp. 106172 ◽  
Author(s):  
P. Dileep ◽  
Gean A. Varghese ◽  
S. Sivakumar ◽  
Sunil K. Narayanankutty
Keyword(s):  
Natural Rubber ◽  
Silica Fume ◽  
High Performance ◽  
Innovative Approach ◽  
Rubber Composites ◽  
Functional Applications ◽  
Natural Rubber Composites

scholarly journals Functionalized Nanosilica for Vulcanization Efficiency and Mechanical Properties of Natural Rubber Composites

2021 ◽  
Author(s):  
Dileep Padmanabhan ◽  
Sinto Jacob ◽  
C.S. Julie Chandra ◽  
Midhun Dominic C.D ◽  
Poornima M P ◽  
...  
Keyword(s):  
Natural Rubber ◽  
High Performance ◽  
Morphological Analysis ◽  
Mechanical Performance ◽  
Cost Effective ◽  
Rubber Composites ◽  
Profound Influence ◽  
High Performance Polymer ◽  
Natural Rubber Composites ◽  
Cure Time

Abstract Accelerator functional character was introduced on nanosilica by the chemical reaction of sodium isopropyl xanthate (SIPX) with nanosilica (NS). Functional characteristics of nanosilica were confirmed by the Elemental analysis, thermogravimetric analysis, and infrared spectroscopy. This SIPX functionalized nanosilica (SIPX-NS) incorporated natural rubber (NR) compounds were used to evaluate the dispersion of silica in rubber and also the interaction between rubber and filler. The finely dispersed SIPX-NS particles in the NR matrix are revealed from the morphological analysis. Subtle changes in surface chemistry of silica had a profound influence on the dispersibility in NR matrix. NR 4SIPX-NS composite exhibited improved cure time, tensile strength, flex crack resistance and aging resistance relative to those of NR NS composite. This simple, efficient and cost-effective surface modification of silica improved the vulcanization efficiency and mechanical performance of NR composites and has great potential in the fabrication of high-performance polymer composites.

Enhancing performances of hemp fiber/natural rubber composites via polyhydric hyperbranched polyester

2021 ◽  
Vol 41 (5) ◽  
pp. 404-412
Author(s):  
Zong Shen ◽  
Weihua Song ◽  
Xiaolong Li ◽  
Le Yang ◽  
Chaoyu Wang ◽  
...  
Keyword(s):  
Natural Rubber ◽  
Interfacial Adhesion ◽  
High Performance ◽  
Rubber Matrix ◽  
Rubber Composites ◽  
Hemp Fiber ◽  
Elongation At Break ◽  
Cutting Resistance ◽  
Natural Rubber Composites ◽  
High Elasticity

Abstract High-performance rubber composites can be obtained by combining the strength of fiber with the high elasticity of rubber. In this article, environmentally friendly natural rubber (NR)/carbon (CB) composites reinforced by maleic anhydride (MAH) grafted hemp fiber (HF) in the presence of polyhydric hyper-branched polyester (PHP) were studied. The grafting of MAH on the surface of HF (HF-MAH) improves the roughness of fibers, the introduced C=C participates in rubber covulcanization with NR matrix at high temperature, thus enhancing the physical locking and chemical crosslinking between HF and NR matrix. The bridge effect was produced between HF-MAH and rubber matrix by PHP, and the interfacial adhesion was further enhanced. As a result, the tensile strength, tear strength, and elongation at break were improved by approximately 14.5, 26.2, and 10.8%, respectively. The 100 and 300% constant elongation stress was increased by 134 and 113%, and the cutting resistance was also improved obviously.

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