Effects of Bio-based Oils on Processing Properties and Cure Characteristics of Silica-filled Natural Rubber Compounds

2017 ◽  
Vol 20 (1) ◽  
pp. 1-19
Author(s):  
B. Siwarote ◽  
P. Sae-Oui ◽  
S. Wirasate ◽  
K. Suchiva
Keyword(s):  
Natural Rubber ◽  
Cure Characteristics ◽  
Rubber Compounds ◽  
Processing Properties

scholarly journals PENGARUH PENAMBAHAN ALKANOLAMIDA TERHADAP KARAKTERISTIK PEMATANGAN DAN KEKERASAN VULKANISAT KARET ALAM BERPENGISI KAOLIN

2013 ◽  
Vol 2 (4) ◽  
pp. 38-42
Author(s):  
Indah M.S. Sitorus ◽  
Yudha Widyanata ◽  
Indra Surya
Keyword(s):  
Natural Rubber ◽  
Crosslink Density ◽  
Palm Stearin ◽  
Rubber Compound ◽  
Cure Characteristics ◽  
Rubber Compounds ◽  
Cure Time

By using a semi-efficient sulphur accelerated vulcanization system, an investigation of the effect of  alkanolamide on cure characteristics and hardness  properties of kaolin-filled natural rubber compounds was carried out. Alkanolamide was synthesized  from Refined Bleached Deodorized Palm Stearin (RBDPS) and diethanolamine. Alkanolamide was incorporated into the kaolin filled-natural rubber compound at 1.0; 3.0; 5.0 and 7.0 Parts per-Hundred RubbeR (phr). It was found that alkanolamide gave shorter scorch time and cure time. Alkanolamide also exhibited higher torque different,  crosslink density, and hardnessup to 5.0 phr and then decreased with further increasing the loading of alkanolamide.

scholarly journals Physico-mechanical properties of rubber seed shell carbon: Filled natural rubber compounds

2010 ◽  
Vol 16 (2) ◽  
pp. 149-156 ◽  
Author(s):  
L.O. Ekebafe ◽  
J.E. Imanah ◽  
F.E. Okieimen
Keyword(s):  
Mechanical Properties ◽  
Natural Rubber ◽  
Bulk Density ◽  
Surface Area ◽  
Heating Temperature ◽  
Filler Loading ◽  
Loss On Ignition ◽  
Rubber Seed ◽  
Cure Characteristics ◽  
Rubber Compounds

Samples of rubber seed shells were carbonized at varying temperatures (100, 200, 300, 400, 500, 600, 700, 800?C) for three hours each and sieved through 150?m screen. The portion of the rubber seed shell carbon that passed through the screen was characterized in terms of loss on ignition, surface area, moisture content, pH, bulk density, and metal content and used in compounding natural rubber. The characterization shows that the pH, conductivity, loss on ignition and the surface area increases as the heating temperature increases, unlike the bulk density which decreases. The compound mixes were cured using efficient vulcanization system. Cure characteristics and physico-mechanical properties of the vulcanisates were measured as a function of filler loading along with that of N330 carbon-black filled natural rubber vulcanisate. The results of the cure characteristics showed that the cure times, scorch times and the torque gradually increased, with increasing filler content for rubber seed shell carbon-filled natural rubber, with filler obtained at carbonizing temperature of 600?C tending to show optimum cure indices. The physico-mechanical properties of the vulcanisates increase with filler loading. The reinforcing potential of the carbonized rubber seed shell carbon was found to increase markedly for the filler obtained at the temperature range 500-600?C and then decrease with further increase in temperature.

scholarly journals CURE CHARACTERISTICS AND CROSSLINK DENSITY OF NATURAL RUBBER/STYRENE BUTADIENE RUBBER BLENDS

2015 ◽  
Vol 3 (4) ◽  
pp. 1-5
Author(s):  
Indra Surya ◽  
Syahrul Fauzi Siregar
Keyword(s):  
Natural Rubber ◽  
Crosslink Density ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Blend Ratio ◽  
Rubber Blends ◽  
Cure Characteristics ◽  
Rubber Compounds ◽  
Cure Time ◽  
Styrene Butadiene

By using a semi-efficient vulcanization system, the cure characteristics and crosslink density of natural rubber/styrene butadiene rubber (NR/SBR) blends were studied with a blend ratio from 0 to 100% rubber. The scorch time, optimum cure time, and torque difference value of the blended rubber compounds were determined by using the Moving-Die Rheometer (MDR 2000). The crosslink density was determined by the Flory—Rehner approach. Results indicate that the scorch and cure times, ts2 and t90, of the NR/SBR blends increased with increasing the SBR content. Whilst, the maximum values of torque difference and crosslink density were performed by the NR/SBR blend with a blend ratio of 75/25.

Curing Characteristics and Tensile Properties of White Fly Ash Filled Natural Rubber Compounds

2014 ◽  
Vol 625 ◽  
pp. 753-756
Author(s):  
Hisyam Mokhtar ◽  
Razif Nordin ◽  
Saidatulakmar Shamsudin ◽  
N.Z. Noriman
Keyword(s):  
Tensile Strength ◽  
Fly Ash ◽  
Natural Rubber ◽  
Tensile Properties ◽  
Cure Characteristics ◽  
Rubber Compounds ◽  
Curing Characteristics ◽  
Cure Time

The effect of white fly ash (WFA) on cure characteristics and tensile properties of natural rubber compounds were investigated in the range of 0 to 30 phr. The size of WFA that is used in this study was 45-75 μm. Based on the result, it is found that the scorch time and cure time decreased with increasing of WFA loading. The tensile strength gradually increased to the maximum at 5 phr WFA. The further increase of WFA loading led to the decrease in tensile strength. Tensile properties such as M100 (stress at 100 % elongation) was gradually increased with the increasing of WFA loading, meanwhile, the elongation break showed a decreasing trend.

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