Naturkautschuk

Technische Produkte

The Influence of Moulding Temperature on the Strength of Natural Rubber to Metal Bonded Joints

The influence of moulding temperature on the peel strength of a bonded joint was investigated for a sulphur cured semi-EV natural rubber vulcanisate. A higher peel force was recorded at the higher moulding temperature. The effect of vulcanisation temperature on peel strength was thought to arise from a change in the physical properties of the […] mehr...

28.April 2003 - Neues aus der Forschung

Technische Produkte

Experimental and Numerical Aspects of Cavitation

Rubber isolation systems represent an effective method to isolate the superstructure from seismic ground accelerations. In this study, two sets of high-damping natural rubber bearings are subjected to characterization tests to determine the corresponding stiffness parameters. Bearings with flat steel laminae represent the first set, while the second one has inclined steel plates necessary to […] mehr...

28.April 2003 - Neues aus der Forschung

Additive & Füllstoffe

Physical Properties and Swelling of Natural Rubber Compounds Containing Rice Husk Ash

Rice husk ash, used as received (RHA) or milled (MHA), was investigated in natural rubber (NR) for its potential as a new type of filler. The physical testing of the NR vulcanizates involved tensile, tear, and abrasion resistance, hardness and resilience. The interaction between rice husk ash and natural rubber was investigated by swelling in […] mehr...

28.April 2003 - Neues aus der Forschung

Kautschuke

TESPT and Treated Silica Compounds on TESPD Rheological Property and Silica Break Down in Natural Rubber1

The sulfur containing silanes [bis (triethoxysilylpropyl)tetrasulfide (TESPT) and bis(triethoxysilylpropyl)disulfide (TESPD)] and silica were compounded in the natural rubber (NR) and their effects with respect to the viscosity, heat generation, power consumption, vulcanization, dynamic, mechanical, heat build-up (HBU), and blowout (BO) properties and the silica agglomerate break down were compared. The treatment of the TESPT and […] mehr...

28.April 2003 - Neues aus der Forschung

Kautschuke

Purified Refinery Sludge as Process Aid in Sulphur Vulcanization of Natural Rubber

This paper reports the data obtained on an attempt at the utilisation of the sludge which is a dumped waste of petroleum refineries. This sludge after purification was used as a processing aid in the sulphur vulcanization of natural rubber where carbon black is used as filler. Different mixes, containing varying concentrations of aromatic oil/refinery […] mehr...

28.April 2003 - Neues aus der Forschung

Kautschuke

The Paradoxical Nature of Natural Rubber

The green nature of natural rubber is widely accepted, yet it is probable that many remain unaware of the significant contribution which natural rubber makes to global ecology. On the other hand, it can be argued that the main market for natural rubber (truck tyres) is a major contributor to destruction of the environment. Clearly […] mehr...

28.April 2003 - Neues aus der Forschung

Kautschuke

Reinforcement of NR by Silica Generated In Situ: Comparison with Carbon Black Stock1

This paper describes the new mixing method of silica onto “green” natural rubber (NR) using the sol-gel reaction of tetraethoxysilane (TEOS) before curing. NR was subject to swelling by TEOS and the sol-gel reaction of TEOS in NR matrix was conducted by a base catalysis to obtain NR/in situ silica mix. The resulted NR/in situ […] mehr...

28.April 2003 - Neues aus der Forschung

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