Materials

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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

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

Figure (3) Two-body abrasion, reciprocating sliding apparatus (1) Base plate (2) Plate (3) Linear bearing (4) Table (5) Emery paper (6) Test sample (7) Sample jig (8) Load cell (9) Normal load.

Crosslinking by light and silica nanoparticles

Development in the Surface Properties of the Hybrid Composite Resin by Light-Curing Process and Silicon Dioxide Nanoparticles

The purpose of this paper is to identify the surface properties of the hybrid composite resin as function of curing times, curing modes and fractions of SiO2 NPs. more...

June 24. 2021 - Research news

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Mechanical-thermal behavior of rubber during the process

Simulation of a Heat-Buildup Process on Rubber Components

This article describes the simulation setup and the development of a simulation method for modeling the self-heating of cyclic-loaded rubber components within the well-known ABAQUS FE environment. more...

June 22. 2021 - Research news

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Systematic process investigations on a rubber extruder

Optimization Approaches in Rubber Extrusion for Energy and CO² Savings

Systematic process investigations on a rubber extruder (40 mm, 16D) show on the basis of enthalpy increase, that the specific energy input is 0.3 - 1.7 kWh/kg and the thermal efficiency is in the range of 1 - 12 %. more...

June 15. 2021 - Research news

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Part 1: Design and Construction of an AM-unit for 3D-Printing

Additive Manufacturing of Rubber Parts based on liquid Rubber Polymers

This publication describes the design and construction of a test rig for the additive manufacturing of liquid rubber-based filled and curable low viscous rubber compounds. more...

June 8. 2021 - Research news

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