HOBUM and Relement created high performing biobased composite material

Relement achieved an important milestone by successfully demonstrating the use of our ingredient bio MPA in high-quality composite materials. Relement worked with Hobum to create this game-changing material: a high-performance, biobased composite material with a glass transition temperature of >110 degrees Celsius.

Hobum aimed to develop composites parts made of plant fibres and a vegetable oil-based resins using a resin-transfer moulding process to create a bisphenol A-free product. Hobum reached out to Relement for the utilisation of our ingredient bio MPA to replace fossil-based anhydrides such as MHHPA in their resins.

After 1.5 year of testing of various formulations, the partnership hit a breakthrough with a recipe based on admergenic acid (ADA), epoxidized linseed oil (ELO) and Relement’s ingredient 3-methylphthalic anhydride (bio MPA). This resulted in a prototype car interior panel part. The composite material reached the highest % biobased (85%) and the highest glass transition temperature (Tg 95-120 °C depending on catalyst and temperature). A higher Tg results in enhanced strength, stiffness and heat resistance.

There is a strong demand worldwide on availability of lightweight composite materials with high performance. Bio MPA can be a gamechanger for this industry. HOBUM recently showed all technical data at their HOBUM Innovation Exchange Webinar.