Comparative Studies on the Effect of Titanate Coupling Agent on the Mechanical Properties of Zinc Oxide-Filled Chloroprene and Natural Rubber

Attapulgite (AT)/natural rubber (NR)/ styrene-butadiene rubber (SBR) nanocomposites have been prepared after attapulgite was modified by different coupling agent. The treatment of AT caused the adhesion between AT nanorods and the nature rubber/styrene-butadiene rubber was improved, which enhanced the tensile properties of the matrix. The tensile strength of composites attained 15.6 MPa after AT was modified by 3%wt Si-69 coupling with addition of 20 phr.

Download Full-text

Influence of Zinc Oxide Nanograins on Properties of Epoxidized Natural Rubber Vulcanizates

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.748.79 ◽

2017 ◽

Vol 748 ◽

pp. 79-83 ◽

Cited By ~ 1

Author(s):

Rudeerat Suntako

Keyword(s):

Mechanical Properties ◽

Zinc Oxide ◽

Natural Rubber ◽

Specific Surface ◽

Surface Area ◽

Specific Surface Area ◽

Epoxidized Natural Rubber ◽

Precipitation Method ◽

Cure Characteristics ◽

Permanent Set

Zinc oxide (ZnO) nanograins are synthesized by precipitation method filled epoxidized natural rubber compared to conventional ZnO. The synthesized ZnO nanograins are characterized by X-ray diffraction and transmission electron microscopy and found that average primary size of ZnO synthesized around 40 nm and the specific surface area of 28.72 m2 g-1. Furthermore, the cure characteristics, rubber mechanical properties and permanent set were investigated. The obtained results are found that the ZnO nanograins significantly affected to cure characteristics, rubber mechanical properties and permanent set. This is due to small grain size and large specific surface area.

Download Full-text

Effect of Oyster Shell Powder Loading on the Mechanical and Thermal Properties of Natural Rubber/Oyster Shell Composites

Polymers and Polymer Composites ◽

10.1177/096739111702500103 ◽

2017 ◽

Vol 25 (1) ◽

pp. 17-22 ◽

Cited By ~ 4

Author(s):

Lefan Li ◽

Zongqiang Zeng ◽

Zhifen Wang ◽

Zheng Peng ◽

Xiaodong She ◽

...

Keyword(s):

Mechanical Properties ◽

Thermal Stability ◽

Tensile Strength ◽

Natural Rubber ◽

Coupling Agent ◽

Oyster Shell ◽

Absorption Bands ◽

Tear Strength ◽

Oyster Shell Powder ◽

Shell Powder

The oyster shell powder/natural rubber composites were successfully prepared by blending the modified oyster shell powder with natural rubber (NR). The oyster shell powder with a particle size of 209 nm were well distributed within the rubber matrix. The characteristic Fourier transform infrared spectroscopy (FTIR) absorption bands of both oyster shell powder and natural rubber were observed in the FTIR spectra of NR/oyster shell powder composites. The C-O absorption bands in carbonates of composites exhibit a shift from 1425 cm−1 to 1446 cm−1 which suggests the bonds formed among oyster shell powder, earth coupling agent and NR. The tensile strength and stress at 500% elongation increased with rising of the earth coupling agent. Composites with 1.5 parts per hundred rubber (phr) coupling agent achieved the highest mechanical properties, where an increase of 13.4% in tensile strength was found. The tensile strength and tear strength increased along with an increment of oyster shell powder. When the content of oyster shell powder attained 25–30 phr, the composites exhibited the best mechanical properties. In particular, the tensile strength and tear strength increased by 27.9% and 17.2% when compared with those of the control samples. Furthermore, the addition of the oyster shell powder leads to the improvement of thermal stability which is evidenced by an increase of 8 °C in the initial degradation temperature. The improvement of the mechanical properties and thermal stability of the composites have demonstrated that the oyster shell powder can be used as potential fillers for natural rubber.

Download Full-text

Effects of variation of oil and zinc oxide type on the gas barrier and mechanical properties of chlorobutyl rubber/epoxidised natural rubber blends

Materials & Design (1980-2015) ◽

10.1016/j.matdes.2013.02.057 ◽

2013 ◽

Vol 49 ◽

pp. 922-928 ◽

Cited By ~ 10

Author(s):

Lin Li ◽

Jin Zhang ◽

Jae Ok Jo ◽

Sanjoy Datta ◽

Jin Kuk Kim

Keyword(s):

Mechanical Properties ◽

Zinc Oxide ◽

Natural Rubber ◽

Gas Barrier ◽

Rubber Blends ◽

Chlorobutyl Rubber

Download Full-text

Reinforcement of Natural Rubber with Silanized Precipitated Silica Nanofiller

Rubber Chemistry and Technology ◽

10.5254/1.3547914 ◽

2005 ◽

Vol 78 (5) ◽

pp. 793-805 ◽

Cited By ~ 5

Author(s):

A. Ansarifar ◽

N. Ibrahim ◽

M. Bennett

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Zinc Oxide ◽

Reaction Mechanism ◽

Energy Density ◽

Natural Rubber ◽

Elemental Sulfur ◽

Stored Energy ◽

Tear Strength ◽

Precipitated Silica

Abstract The effect of a large amount of precipitated amorphous white silica nanofiller, pre-treated with bis[3-triethoxysilylpropyl-)tetrasulfide (TESPT), on the mechanical properties of a sulfur-cured natural rubber (NR) was studied. TESPT chemically adheres silica to rubber and also prevents silica from interfering with the reaction mechanism of sulfur-cure. The silica particles were fully dispersed in the rubber, which was cured primarily by using sulfur in TESPT, or, by adding a small amount of elemental sulfur to the cure system. The cure was also optimized by incorporating sulphenamide accelerator and zinc oxide into the rubber. The hardness, tear strength, tensile strength, and stored energy density at break of the vulcanizate were substantially improved when the filler was added. Interestingly, these properties were also enhanced when the rubber was cured primarily by using sulfur in TESPT.

Download Full-text