HAY-PLASTIC COMPOSITES – EFFECT OF HAY PARTICLE SIZE ON THE WATER ABSORPTION

The main aim of this paper is to present the research findings which come out from experimental determination influence input raw material properties and composition on water absorption hay-plastic composites (HPC). During HPCs production, important parameters such as hay sawdust particle size, hay/plastic concentration ratio or type plastic matrix can be recognized. In study, was produce an acceptable competitive level quality determined final mechanical HPCs. Particle size used for production HPC has significant also other (water absorption, hardness, frost resistance, etc.). deals with impact relationship between particles sizes, composites. By side intention authors determine possibilities waste materials usage. were obtained using a semi-operational injection molding press where provided by working screw. As material, meadow hay, HDPE recycled HDPE, represented lids PET bottles, used. effect according combination default levels hay/HDPE ratio, instead virgin sawdust.