Objective:By introducing straw fillers from herbaceous plant into polyethylene(PE)resin with high content,large size and fibrous structure,the research on polyethylene based herbal plastic composite was carried out.Methods:Using self-designed equipment to integrate straw and PE particles for feeding,it achieves the temperature up to the melting point of PE through high-speed friction heating before mixing to form a herb-plastic composite.Results:Inside the composite,the size of the straw filler reaches 0.8～1.0 cm to form a criss-cross structure,thus improving the overall performance.The bending strength and modulus of the composite are 42.8～76.1 MPa and 3 590～4 990 MPa,respectively.After soaking for 60 d,the water absorption rates of the composites are all less than 18％.The thermal deformation temperature is 93.5～101.1℃.The nail holding force is up to 3 520～3 900 N.Conclusion:Through the establishment and development of this technology,it not only lays the foundation for the design and preparation of the bio-based materials from straw with high performances,but also creates a new methodology for high-quality off-field utilization of straw.
关键词
禾塑复合材料/植物纤维/大尺寸/耐水性/握螺钉力
Key words
Herb-plastic composite/Plant fibers/Large size/Water resistance performance/Nail holding force
维普
万方数据