| 摘要 |
The invention relates to a method and a system for producing composite materials from the waste of thermoplastic plastics. In the method according to the invention, the filler, favorably: pearlite, bentonite, microsphere, fly ash at a volume of 20-70% relative to the total mass of the mixture of the thermoplastic materials is subjected to a thermal pre-treatment at the temperature of 180-250°C, which is a function of the melting point of the mixture of the thermoplastic material waste, favorably polyamide, polyester, polystyrene, polypropylene (binding component), wherein the binding component was heated at the same time to the temperature in the range of 90-120°C depending on the type of the binding component, at a volume of 30-80% of the total mass of the composite material, and optionally a heat-resistant dye and stabilizer were added, then the heated components of the composite material were brought into the mixing and reducing apparatus at variable mixing speed and were mixed in the temperature regime in the range of 130-150°C in a time period of 2-3 minutes, the composite material compound obtained in such a way was brought into the pot of the transfer mold and was subjected to a compression of the hydraulic press at an adjustable compressive force in the range of 10-200 tonnes, and the composite material obtained in such a way was cooled in order to obtain the desired product. The system for producing the composite material is characterized in that the hydraulic press (1) has four working sections, the press-in section (2) of the hydraulic press (V) being used to fill the pot (3) of the transfer mold (6), the upper pressing section (4) pouring in the composite material through the upper pressure plate (5) and pressing the composite material into the transfer mold (6), the lower pressing section (7) pressing the composite material into the transfer mold (6) from below through the lower pressure plate (8) in succession, and the press-out section (9) being then used to press out the transfer mold (6) under the hydraulic press (V) onto the transporter (10). |
