A series of natural rubber (NR) vulcanizates have been prepared by partially replacing the carbon black by metakaolin (MK). The effect of MK content on the physicomechanical properties and cure characteristics of NR composites was investigated. The effect of with and without silane (Si-69)-modified MK content on the mechanical behaviors of the NR systems has been reported. The physicomechanical properties of the rubber vulcanizates were determined before and after heat aging at 90°C for 72 h and aging with brake fluid for 1 week. NR/MK composites exhibit increase in percentage elongation as increase in the MK filler content.
JongL. Dynamic mechanical properties of styrene butadiene composites reinforced by defatted soy flour and carbon black co-filler. Compos A2006; 37:438.
4.
JongL. Viscoelastic properties of ionic polymer composites reinforced by soy protein isolate. J Polym Sci B Polym Phys2005; 43: 3503–3518.
5.
IsmailHJaffriRMRozmanHD. Characterization of defatted soy flour and elastomer composites. J Elastomer Plastics2003; 35: 181–192.
IsmailHShuhelmySEdyhamMR. The effects of a silane coupling agent on curing characteristics and mechanical properties of bamboo fiber filled natural rubber composites. Eur Polym J2001; 38: 39–47.
8.
CoughlinETA. Floor covering. Patent 2,056,958, USA, 1936.
9.
IsaacsMR. Composition of matter. Patent 2,127,298, USA, 1938.
10.
LehmannRLPetusseauBJPinazziCP. Preparation of rubber-protein glyoxal composition and vulcanizable material obtained there from. Patent 2,931,845, USA, 1960.
11.
HakimIKBishaiAMSaadALG. Dielectric properties of butyl rubber mixtures at 106-1010 Hz. J Appl Polym Sci1988; 35: 1123–1125.
12.
ShinzoKYukoI. Reinforcement of general-purpose grade rubbers by silica generated in situ. Rubber Chem Technol2000; 73: 534–550.
13.
SeredaLLozpez-GonzalezMMVisconteLLYNunesRCRFurtadoCRGRiandeE. Influence of silica and black rice husk ash fillers on the diffusivity and solubility of gases in silicone rubbers. Polymer2003; 44: 3085–3093.
14.
Da CostaHMVisconteLLYNunesRCRFurtadoCRG. Mechanical and dynamic mechanical properties of rice husk ash-filled natural rubber compounds. J Appl Polym Sci2002; 83: 2331–2346.
15.
SaeouiPRakdeeCThanmathornP. Use of rice husk ash as filler in natural rubber vulcanizates. J Appl Polym Sci2002; 83: 2485–2493.
16.
OkieimenFEOkieimenCO. Enhanced metal sorption by ground nut husks modified by thioglycollic acid. Bull Pure Appl Sci2001; 20C: 13–20.
17.
AduOE. Carbon black is one of the most important raw materials, second to the polymer, used indices of strong filler–rubber matrix interaction. MSc Thesis, University of Benin, Nigeria, 1991.
18.
JideonwoAUtukJPN. Effects of fillers on the properties on thermoplastic elastomers. J Appl Polym Sci2001; 18: 115.
19.
SombatsompopNThongsangSMarkpinTWimolmalaE. Flyash particles and precipitated silica as fillers in rubbers. J Appl Polym Sci2004; 93: 2119–2130.
20.
AlkadasiNANHundiwaleDGKapadiUR. Effect of coupling agent on the mechanical properties of fly ash-filled polybutadiene rubber. J Appl Polym Sci2004; 91: 1322–1328.
21.
MishraSSonawaneSHBadgujarNGuravKPatilD. Comparative study of mechanical and flame retarding properties of polybutadiene rubber filled with nanoparticle and flyash. J Appl Polym Sci2005; 96: 6–9.
22.
HashimASAzahariBIkedaYKohjiyaS. The effect of bis(3-triethoxysilylpropyl) tetrasulfide on silica reinforcement of styrene-butadiene rubber. Rubber Chem Technol1998; 71(2): 289–300.
23.
PickwellRJ. Bis(triethoxysilyl ethyl toluene)polysulfide a scorch-resistant silane coupling agent mineral filled elastomers. Rubber Chem Technol1982; 56: 94.
24.
RoojSDasAThakurVMahalingRNBhowmickAKHeinrichG. Preparation and properties of natural nanocomposites based on natural rubber and naturally occurring halloysite nanotubes. Mater Des2010; 31: 2151–2156.
25.
SchuurMVDGaymansRJ. Influence of chemical crosslinks on the elastic behavior of segmented block copolymers. Polymer2005; 46: 6862–6868.
26.
El-NasharDEMansourSHGirgisE. Nickel and iron nanoparticles in natural rubber composites. J Mater Sci2006; 41(16):5359–5364.
