Different kinds of methods are available for the processing of bead foams. Common to all processes is the welding of the single expanded beads, which can be challenging. A research project shows that the process can also be carried out with blends of PLA and polyhydroxybutyrate-co-valerate PHBV.

Fig. 1. Sintering of the foamed beads takes place between the two melting points of the used polymer, which can be seen from the DSC curve (schematic diagram)

Blends of PLA and PHBV as Replacement for Expanded Polystyrene

Kunststoffe, biobasiert

Kunststoff Werkstoffe

Biokunststoffe

Blend

Thermoplaste

Partikelschäumen

Kunststoffverarbeitung: Verfahren

Schäumen / Reaktive Verarbeitung

Kunststoffe, bioabbaubar

Bio-Based Polymer Alternatives  for Bead Foams

Contrary to the current perception, plastics, as a component of packaging materials, often represent the most environmentally sound option. The plastics industry is currently undergoing a transformation, shifting the focus onto the realization of closed material loops as well as reducing the resource input with highly efficient materials.

To allow the saving potential of the formulations for thermoforming films to be tested under laboratory conditions, it was determined at what compression resistance the cups manufactured from the semi-finished products resist deformation

More Resource-Efficient Materials for Thermoforming

Masterbatches

Additive

Warmformen / Thermoformen

Kunststoffverarbeitung: Maschinen und Komponenten

Polypropylen-Compound

Folien

Halbzeuge und Zwischenprodukte

Kunststoff-Halbzeuge

Resisting the Pressure

Vehicle weight reduction requirements today pose great challenges not only to automotive manufacturers and suppliers but also to material producers. The materials used must cut weight while at the same time withstanding the mechanical and chemical stresses encountered in service. This can be achieved, for example, with blends of polyamide and polypropylene. These blends also offer other useful advantages.

Fig. 4. Test bars after contact with a calcium chloride solution. The grey points indicate degradation. The bars made from the PA+PP blends show basically no degradation, unlike those made from PA.

16:9

Blends of PP and PA Reduce Weight and Improve Chemical Resistance

Kfz-Elektronik

Elektronik

Polyamide

Polypropylen

Lighter Together

Sabic presents a special blend that helps prevent unpleasant noise in automotive interiors. The new LNP Lubriloy N2000 compound, is based on polycarbonate (PC) and acrylonitrile butadiene styrene (ABS) and offers both molded-in color capability and paintability.

The new compound helps prevent buzz-squeak-rattle (BSR) noise in automotive interiors, such as mirror housings and trim, cupholders, button guides and heating-ventilation-air conditioning (HVAC) frames. © Sabic

ABS / ASA-Kunststoffe

Polycarbonat

Less Noise, More Design Freedom

The production of particle foams with low densities and at the same time high molding quality is difficult, so the development of foamed polymer blends could simplify the entire processing.

Polylactid

Study of expandable PLA particle foams – Influence of the blend system on processability and properties

K.D. Feddersen is now selling E-Loop H801 MR, the first mechanically recycled ABS/PC from the Spanish plastics producer Elix Polymers.

K.D. Feddersen expands its portfolio of sustainable compounds with E-Loop H801 MR.

Blend with Recycled PC Content

The influence of different coupling mechanisms on the structure-properties-relationships of highly filled, flame-retardant EVA/LLDPE based cable compounds.

Polyethylen

Kabel

Automatisierungstechnik

Signalübertragung

Flammschutzmittel

Halogen-free flame-retardant cable compounds based on highly filled EVA/LLDPE blend systems – Influence of the coupling mechanisms

The aim of this work was to achieve transparent PC/PMMA-blends by continuous reactive extrusion while improving mechanical and optical properties.

Kunststoffe

Photonik

Optik

Polymethylmethacrylat

Optische Mess- und Prüfverfahren

Qualitätssicherung

Qualitätssicherung Kunststoff

Transparent PC/PMMA blends: influence of functionalization on optical, morphological and mechanical properties

Polyamide fibers need to be sufficiently flame-retardant for the use in textile applications. Flame-retardants containing halogens and coating fibers with those is a common practice, although it has some severe disadvantages. Inherently flame-retardant polymers, which are processed along with polyamide to form blends and subsequently spun into fibers, provide an attractive alternative.

Inherently flame-retardant polymers are processed along with polyamide to form blends and subsequently spun into fibers.

Flame Retardance of Plastic Fibers

Fasern

Kunststofffasern

Verstärkungsstoffe

Intrinsically Flame-Retardant Polyamide

Plastic waste in the sea has been shaping the negative image of the industry for several years. Various initiatives and mergers of companies have therefore launched projects to tackle this Ocean-bound Plastics (OBP). Components made of OBP could become a symbol for a sustainable use of plastics.

Community collection for bottles in Haiti

Flame Retardant for Compounds Based on Recycled Ocean-Bound Plastics

Polybutylenterephthalat

Recycling

Umweltmanagement

Polyethylenterephthalat

Kunststoff-Recycling

Kunststoff-Aufbereitung

From the Sea to Electronics

One of the last major German chemical giants, BASF is fighting back against the weak economy with an extensive efficiency program. Its acquisition of Solvay’s polyamide business has strengthened the engineering thermoplastics value chain. The circular economy is providing most of the new impetus.

Fig. 2. The <a href="http://Futurecraft.Loop">Futurecraft.Loop</a> sneaker is a recyclable shoe made from 100 % recycled material

BASF and Its Customers Commit to Chemical Recycling

Forward Together!

Enhancing mixed bottle flakes by turning them into extrudable recycled crystalline polyethylene terephthalate (rCPET) was the goal of a joint development project looking to close the gap in the PET recycling system. By successfully producing a sheet made from recycled material suitable for high-quality applications such as thermoformed food trays, Gneuss, Sukano and Illig have demonstrated that this approach is indeed possible.

Thermally stable rCPET food trays made from multicolor APET bottle flakes

Upcycling of Mixed APET Bottle Flakes into Thermally Stable rCPET Food Trays

Extrusion

Farbstoffe und Pigmente

Schmelzefilter

Anlagen Lebensmittel

Anlagen für die Additive Fertigung

Anlagen Additive Fertigung / 3D-Druck, andere

Filteranlagen

Farbstoffe

Flakes

Kunststoff-Rezyklat

Extrusionsanlagen

PET: From A to C

The injection molding system supplier Husky is launching its HyPET HPP5e. This is a refinement of the proven HPP platform, which, as a fully integrated system for the manufacture of PET preforms, is intended to obtain greater energy savings, system reliability, preform quality and user friendliness than its predecessor.

The HyPET HPP5e is claimed to achieve up to 7 % energy saving compared to the predecessor model

Husky: Advances in the Injection Molding of PET Bottle Preforms

Spritzgießen

Spritzgießmaschinen, allgemein

Spritzgießmaschinen

Refining a Proven Platform

The specialty chemicals group has developed a new concept for radar sensors with integrated thermal management. A combination of thermally conductive plastics with metallic cooling elements in hybrid technologyg is used.

The concept for radar sensors provides for heat dissipation from hot spots using thermally conductive plastics in combination with metallic cooling elements

Hybrid-Spritzgießen (Metall / Kunststoff)

Radar Sensors with Integrated Thermal Management

PA66 and PBT considerably expand the field of applications for laser sintering by showing better properties than classic PA11 and PA12 materials in most cases.

As a temperature-resistant and flame-retardant material with high mechanical properties, PA66 opens up new application possibilities for laser sintering, such as its use as a sensor holder

PA66 and PBT for Laser Sintering

Technische Kunststoffe

Selektives Lasersintern von Kunststoff, Metall, Keramik

Verfahren für die additive Fertigung

Pulverbettverfahren

Kunststoff

Bauwesen

Baustoffe

Additive Fertigung

From Injection Molding to  Additive Manufacturing

On the Process-Structure-Property Relationships of Poly(Lactic Acid)-Based Nanocomposites

The concept of bioplastics as sustainable and environmentally friendly materials has become increasingly interesting in both academia and industry. Consequently, many researchers have made great effort in developing bioplastic materials. As new challenging materials, there is still a lack of in-depth understanding of the process−structure−property relationships, especially in multi-phase component nanocomposites.

In this thesis, the bioplastics − poly(lactic acid) (PLA)/polybutylene adipate-co-terephthalate (PBAT)-based nanocomposites containing nano-SiO2 particles − are examined. Various processing procedures are carried out to investigate their effect on the structure−property relationships of the nanocomposites. The selective location of the nanoparticles is observed with respect to the processing sequence. The differences in nanoparticle location have a tremendous impact on the rheological, thermal, and mechanical properties of the PLA/PBAT-based nanocomposites. Furthermore, a numerical simulation of the temperature distribu-tion during the injection molding process is applied to corroborate the effect of the injection molding conditions on the final properties. By understanding the working mechanism and behavior of the phase morphology of the studied nanocomposites, the desirable properties can be optimized and adjusted for proper applications.

Bioplastic-based blend nanocomposites, Poly(lactic acid) (PLA), Poly(butylene adipate-co-terephthalate) (PBAT), Process-Structure-Property Relationships, Silicon dioxide nanoparticles (Nano-SiO2)

Dissertation Praphakorn Saiprasit.pdf

20211221 Dissertation Praphakorn Saiprasit

issue 02/2023

issue 01/2023

issue 09/2022

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