1results about How to "Increase cell density" patented technology

The invention relates to the technical field of polymer composite material processing, and discloses a blending extrusion preparation method of a plant fiber reinforced biodegradable foaming material, which comprises the following steps: firstly, preparing polycaprolactone glycol, zinc isoocatanoate and absolute ethyl alcohol into a polar cosolvent system; the plant fibers are deagglomerated by utilizing the permeation effect of the solvent and a hydrogen bond damage mechanism; then, in a first extruder, a melt sealing material is formed through base resin in a specific proportion to maintain the vacuum degree of a middle-section devolatilization area, and it is ensured that absolute ethyl alcohol is completely removed; in the rear section of the extruder, zinc isoocatanoate immobilized on the surface of the fiber is utilized to catalyze the polyfunctional group epoxy chain extender to generate in-situ ring opening grafting, and a flexible transition layer is constructed on the interface of the fiber and the resin. The problems that plant fibers are prone to agglomeration and poor in resin interface bonding force are solved, the melt strength of a composite system is improved, and the prepared foaming material is uniform in foam hole and stable in performance and has good industrial application prospects.