Biologically imitated bone structure profile prepared from recycled materials and its preparation method
A bionic and bone-like technology, applied in the field of composite materials, can solve the problems of difficult reuse of thermosetting waste, and achieve the effects of high cost, widening the selection range, and high strength
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[0045] The preparation method of the present invention is that thermosetting polymer waste powder and thermoplastic resin A are foamed, extruded and granulated to obtain foamed regenerated particles; then the foamed regenerated particles are used as a core material, and the heat-shrinkable tube produced by thermoplastic resin B is used as a core material. The cladding is only compression molded to produce a biomimetic bone structure profile.
[0046] Such as figure 1 As shown, the specific molding process includes: using compressed air to effectively infuse the expanded regenerated particles into the heat-shrinkable tube 12 through the high-pressure suction fan 10; preheating the heat-shrinkable tube 12 filled with the expanded regenerated particles through microwave The machine 1 is preheated until the foamed regenerated particles are softened; then in the preheating insulation box 5, the first heating pre-pressing roller 2, the second heating pre-pressing roller 3, and the t...
Embodiment 1
[0050] Polyethylene terephthalate (PET) wood grain door and window cover wire
[0051] A kind of solid waste residue of unsaturated polyester paint is crushed, devolatilized, and sieved, and the powder of 300 mesh to 500 mesh is screened, and the powder, low melting point hydrolysis-resistant polyester resin (melting point 176°C) and foaming agent azo Diformamide (ACA), sodium bicarbonate, foam accelerator zinc oxide, dispersant lubricant, antioxidant 215, etc. are dispersed in a high-speed pre-mixer, then added to a screw extruder to extrude and foam, and then water-cooled and pelletized; The temperature of the extrusion melt is about 200-210°C, and the extrusion pressure is 0.6-0.8 MPa to obtain foamed regenerated particles, which are closed-cell foamed particles with a specific gravity of 0.32 kg / liter.
[0052] Concrete proportioning is (by weight):
[0053]
[0054] Antioxidant 215 is a compound antioxidant produced by Tianjin Xinlifeng Technology Development Co., Ltd...
Embodiment 2
[0057] Polyolefin wood grain photo frame wood grain wire
[0058] A thermosetting resin solid waste residue (button resin redundant material) is crushed, devolatilized, and sieved, and the 300-500-mesh powder is screened, and the powder, polyolefin elastomer (POE) resin (melting point 66° C.), Used for high-density polyethylene (HDPE) resin (melting point 120°C), composite blowing agent SAK-8, sodium bicarbonate, dispersing lubricant N, N'-ethylene bisstearamide (EBS), antioxidant 215, etc. After dispersion in a high-speed premixer, add to a screw extruder to extrude and foam, then water-cool and cut into pellets; the extrusion melt temperature is about 150-160°C, and the extrusion pressure is 2-3MPa to obtain foamed regenerated particles. The particles are closed-cell foam particles with a specific gravity of 0.30 kg / liter.
[0059] Concrete proportioning is (by weight):
[0060]
[0061] SAK-8 is a modified ACA foaming agent. It uses ACA as the gas source, and then adds...
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