COMPATIBILISERS | MATERIALS
materials. “In terms of recycling, this procedure leads to poor material properties, such as mechani- cal and visual properties, and processability,” adds Garlinsky. “This in turn requires highly efficient polymer compatibilisers to guarantee good compatibility between the various materials – which is a prerequisite for being able to use the recycled materials again in industry. Their unique structure and high degree of functionalisation make BYK Scona modifiers ideally suited to this task, since even when used in low concentrations they achieve outstanding effects with regard to visual and mechanical properties.” Garlinsky continues: “Further changing environ-
mental regulations are a continuous driver for new innovative products. The 13th Adaptation to Technical Progress (ATP) to the Classification, Label and Packaging of Substances and Mixtures (CLP) Regulations was published by the European Union at the end of 2018. Compounders and processors of thermoplastic materials are now impacted by changes in the product classification for MAH. Products containing a free residual MAH content of as low as 10 ppm (0.001%) now need to be classified as skin sensitising. MAH is the most
frequently used functional group of grafted polyolefin polymers. A vast majority of these products are used as coupling agents for fibre- reinforced thermoplastic materials, such as wood-plastic composites or glass-fibre reinforced polyolefins. What is needed is a label-free alterna- tive and BYK has developed such a product, Scona TSPP 8219 GA, using alternative monomers.”
Automotive needs BYK has developed a number of compatibilisers and coupling agents for recycled polymers. In the automotive industry in particular, plastic compo- nents have now replaced many original materials. However, in Europe the automotive industry is obliged to manufacture an increasing proportion of these plastics from recycled materials. Bumpers are a typical example. The PP used is modified with EPDM for impact strength and fillers are added to achieve the desired price and strength level. BYK adds that there are many future develop- ments planned for its Scona functionalised polymer product range. “These are mainly non-polar polymers modified by chemical grafting with additional functional monomers,” says Garlinsky.
YOU can help
VDI PIAE June 21-22
Mannheim, Germany
stand no.
042
Materialsmart lecture!
JUNE 21, 15:00 MUSENSAAL
- Because we care
develop products with reduced carbon footprint
WE We know how
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