Dr. Volker Börger_

Vamac, HP Zetpol, HT-ACM

The Use of New Additives in the Processing of White And Black Filled Compounds Based On The Diamine Crosslinking System

The benefits of a new additive range for use in diamine crosslinked polymers from Schill+Seilacher “Struktol” GmbH are demonstrated. Rubber Compounds were mixed based on AEM (Vamac) – and HNBR (HP Zetpol) polymers. Struktol HT 740, Struktol HT 750 or Struktol HT 760 demonstrated different activity levels towards the surface of active white fillers and […] more...

June 9. 2017 - Research news

Ulrich Giese

Damping behavior

Influence of Water on Dynamic Mechanical Properties of Silica Loaded Tire Tread Vulcanizates

The damping behavior of silica-loaded vulcanizates is significantly affected by the amount of absorbed water. It results in the formation of a new tan δ peak around -5 ~ 0 °C and an increase of the loss modulus G’’, which can be taken as an indicator for the improvement of wet skid resistance. By the […] more...

April 10. 2017 - Research news

Additives & Fillers

Influence of Silica-Polymer Bond Microstructure on Tire-Performance Indicators

Changes in the coupling agent structure in a silica-silane filler system lead to alterations of the microstructure of the silica-polymer interface and determine the dynamic properties, thus wet skid resistance (WSR) and rolling resistance (RR) of a tire tread. more...

April 16. 2015 - Research news

Additives & Fillers

Effect of Silica on the Performance of Natural Rubber/Poly (Vinyl Alcohol) and Starch Blend Films

The preparation of biodegradable polymer blend was made from natural rubber (NR) latex, starch solution and poly (vinyl alcohol) (PVA) solution by a latex-solution casting method. The swelling ratio of the polymer blend dramatically decreased as a function of silica content and NR content. more...

February 12. 2015 - Research news


Effects of TESPT loading and mixing Condition on Properties of Silica-filled HNBR cured with Peroxide: Correlation of Bound Rubber Content, viscoelastic and mechanical Properties

Two different mixing conditions, i.e., normal condition (low mixing temperature/short mixing time) and extreme condition (high mixing temperature/ long mixing time), were employed for sample preparation. It was found that mixing at the extreme condition yielded significantly increased rubber-filler interaction. more...

February 12. 2015 - Research news

Additives & Fillers

Influence of physical and chemical Polymer-Filler Bonds on Tire Wet-Traction Performance Indicators for Passenger Car Tire Tread Materials

The rubber compound used for a tire tread is a composite material of which the dynamic properties can be adjusted over a relatively broad range by modification of the polymer-filler interaction. For silica-reinforced compounds, control over the polymer-filler interaction is realized by chemical coupling of the silica to the rubber by different silane coupling agents. more...

August 12. 2014 - Research news


Optimization of Mixing Conditions for TESPT Silane Treatment in Silica-filled NBR System: Correlation of Bound Rubber Content to viscoelastic and mechanical Properties

Nitrile rubber (NBR) filled with precipitated silica (PSi) was prepared with an addition of bis-(triethoxysilylpropyl)-tetrasulfide (TESPT) under various mixing conditions. As a highlight of this work, the peroxide crosslinking was employed instead of conventional sulfur vulcanization in products requiring enhanced thermal aging resistance. more...

June 25. 2014 - Research news

Silica-to-rubber interaction

Effect of a Silane Coupling Agent on the Morphology of Silica Reinforced Natural Rubber

Filler-to-rubber interaction is a key parameter in reinforcement of rubber. This paper presents an investigation into the morphology of silica-reinforced Natural Rubber (NR) in presence and absence of a silane coupling agent, bis(triethoxysilylpropyl) tetrasulfide (TESPT). more...

March 18. 2014 - Research news