Research News

Figure 1: TG curves of LLDPE in which any antioxidant reagent  did not add in this  experiment.  The heating rate was from 0.1 K/min to  5 K/min.

Die thermogravimetrische Analyse wurde für die Bestimmung der Aktivierungsenergie der thermischen Degradation von LLDPE eingesetzt

Erweiterte Anwendung der ISO 11358-2 zur Bestimmung der Aktivierungsenergie der thermischen Degradation von Polyethylen

Die thermogravimetrische Analyse (TGA) wurde für die Bestimmung der Aktivierungsenergie der thermischen Degradation von LLDPE eingesetzt, welches unterschiedliche Konzentrationen eines Antioxidants enthielt. more...

October 12. 2021 - Research news

Figure 1, Gr structure via SEM

LDPE/Gr -nano compounds were investigated in terms of graphene distribution, morphology and crystal structure using methods such as Raman spectroscopy, XRD, SEM and TEM

Characterization of the Effect of Graphene Inclusion in LDPE

LDPE/Gr nanocompounds were studied based on graphene (Gr)-distribution, morphology and crystal structure according to different methods such as, Raman spectroscopy (RS), XRD, SEM and TEM. more...

October 5. 2021 - Research news

Figure 1:   Experiment setup and evaluation.

To model the diffusive penetration of migrants into a dense and foamed rubber, a simulation approach based on a free boundary value problem is proposed

A Moving Boundary approach of Capturing diffusants Penetration into Rubber: FEM Approximation and Comparison with laboratory Measurements

To model the penetration of diffusants into dense and foamed rubbers a moving-boundary scenario is proposed. more...

October 5. 2021 - Research news

Figure 1. TS and EAB of NaCAS/PE films.

Films were prepared from sodium caseinate/polyethylene blends by extrusion and hot pressing using various plasticizers such as glycerol, sorbitol and polyethylene glyol

The Characterization of Polyethylene /Sodium Caseinate Films with different Plasticizers produced by Extrusion and its Biodegradability

Sodium caseinate (NaCAS)/polyethylene (PE) blend films by using different plasticizers glycerol (GLY), sorbitol (SOR) and polyethylene glycol (PEG) were produced by the extruder and hot press. more...

September 28. 2021 - Research news

Figure 1: Glass transition point of the NR (left) and SBR (right) compounds with the reference oil TDAE and the four oleic acid derivatives. The Tg at a plasticizer content of 100 phr  corresponds to the Tg of pure oil.

Vegetable oils for plasticisers

Use of Plasticizers made of renewable Raw Materials in multiphase Blend Systems

By way of comparison to the mineral oils conventionally used (TDAE and MES), chemically modified vegetable oils were employed as plasticizers in NR and s-SBR and as compatibilizers in the blend system. more...

September 22. 2021 - Research news

Fig. 1. IR-spectrum of unsaturated polyester grade 196A.

Properties of unsaturated polyesters

Development of Compositions for the Production of Fiberglass Pipes based on unsaturated Polyesters obtained from PET-Waste

The technological properties of unsaturated polyesters synthesized on the base of products from alcoholysis of secondary polyethylene terephthalate, which meets the requirements of the technology for the production of polymer composite and fiberglass pipes, are studied. more...

September 21. 2021 - Research news

Scheme 1: Processing  methods of sample  preparation for actuation measurements

In this work, multi-walled carbon nanotubes and multilayer graphene were used to improve the properties of rubber composites

Rubber Composites based on Carbon Nanotubes, multilayer Graphene and their Hybrid: A comparative Study

In this work, multiwall carbon nanotubes (CNT) and multilayer graphene (MLG) with 18-20 graphene layers were used to improve the properties of the rubber composites. more...

September 21. 2021 - Research news

Figure 4. Tensile strength values of samples.

Modification of mechanical Properties

A Study on Making recycled Polycarbonate more available:

Nowadays, recycling of waste polymers has become an important subject due to the concerns about environmental pollution and human health. more...

August 27. 2021 - Research news

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Critical Gel

Critical Gel and Rubber Curing Cycle Design

Compounds with large cross-sectional thickness must reach a satisfactory “state of cure” by the end of the residence molding cure time to prevent porosity at demoulding. more...

August 20. 2021 - Research news

Fig. 1 Scratch Tester

Polyester Composites are extensively used in many tribological Applications

Tribological Properties of Polyester Composites Filling by solid Lubricants

Lubricants contain solid contaminant particles that hinder their function in wear and friction reduction. more...

August 18. 2021 - Research news

Fig. 2: Hansen Solubility Parameters of compound components in a 3-dimensional diagram; 1: values from: [7], 2: values from [11].

Part 2

Improved Contact Mechanisms of high Viscous Rubber Compounds on Calender Roll Surfaces by using different Tackifier

In Part 1 of this publication ( [1] KGK 3/2021) it was reported about different tackifier classes with regard to their performance to create tackiness in highly filled silica hard-rubber compounds for processing. more...

August 16. 2021 - Research news

Fig. 1: Cross-linking isotherms from RPA measurements.

The Degree of cross-linking of Elastomers is a Key Parameter in Rubber Processing

Development of a novel acoustic Measurement Methodology to Determine the Degree of Cross-Linking of Elastomer Products

There are many physical and chemical measuring methods for determining the degree of cross-linking. more...

August 13. 2021 - Research news

Atr-Ft/Ir Spectrums of P1-P7 vulcanizates Aged At 60 °C, 0-72 Hours.

Thermal Oxidation is a Problem for most Rubbers

Spectroscopic Investigation of the Aging Process of a Tire Sidewall Rubber Compounds

All organic polymers like Rubbers with double bonds are at risk of oxidative processes. Antioxidants are added to the rubber compound to restrain the oxidative influences. more...

August 12. 2021 - Research news

Figure 3: (a) Galvanic corrosion occurs in the presence of two dissimilar metals, an electrically conductive separation and an electrolyte connection. The process does not occur when the two metals are isolated or when there is no electrolytic connection (9); (b) Corrosion mechanism occurring between aluminum and steel with a not-completely-isolating EPDM [11].

Significant impact on the EPDM weather-strip (WS) requirements

Statistical Approach of Designing Isolating EPDM Rubber Compounds to Enable Light-Weighting Solutions at Automotive OEMs

The automotive trend of replacing steel doors in cars with light-weight metals like Magnesium/Aluminum (Mg/Al) has a significant impact on the EPDM weather-strip (WS) requirements. more...

August 9. 2021 - Research news

Figure 1: Results of the rheological analysis by means of the RPA of the dynamic viscosity over ang. frequency ω for liquid rubber and reference bulk rubber samples.

Part 2: Development of low- viscosity Compound Formulations for use in additive Manufacturing

Additive Manufacturing of Rubber Parts based on liquid Rubber Polymers

This publication shows the investigation of formulations and the production of sulfur-crosslinked compounds based on liquid rubbers for processing by means of additive manufacturing in the „Direct-Ink-Writing” process. more...

August 6. 2021 - Research news