Preparation technology of no-halogen, low-smoke, and high-performance sheath material used in locomotive vehicle

Abstract

The invention discloses a preparation technology of no-halogen, low-smoke, and high-performance sheath material used in locomotive vehicles. The preparation technology comprises the following steps: (1) mixing raw materials, and banburying the mixed materials with increased pressure; (2) when a banburying temperature reaches 130 DEG C, cleaning the inner wall of a mixing chamber, reducing the pressure, lifting the weight drop such that the material dough tumbles automatically, and banburying the material dough with increased pressure again; (3) tumbling the material dough every 5 minutes for ensuring a complete reaction of polymers, and controlling the heating speed to prevent the material dough from being scorched during tumbling; (4) well-mixing the material into a material dough; (5) compressing the material dough, and plasticizing the material dough again; (6) extruding the material dough through a high-temperature twin-screw extruder, and cutting the extruded material into finished products of plastic cement granules with grain sizes of 3 to 5 mm; (7) packaging. The method provided by the present invention has advantages of high operability, high production efficiency, and stable product quality. Further, the method is environment protecting compared with traditional processing technologies.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and more specifically relates to a preparation process of a halogen-free, low-smoke, high-performance sheath material for locomotives and vehicles. Background technique [0002] At present, the country is vigorously developing high-speed locomotives, and the sheath materials required for the wires and cables required by the locomotives are very high and must be halogen-free. At the same time, the national technical department has also formulated corresponding technical standards. It is basically difficult to find qualified low-smoke and halogen-free high-performance sheathing materials for rolling stock, which are completely imported from abroad. Therefore, the product of the present invention is specially developed for this technology, which not only solves the required sheath material for rolling stock cables, but also fills up the technical blank of this block in China. Contents of...

AI Technical Summary

Problems solved by technology

[0002] At present, the country is vigorously developing high-speed locomotives, and the sheath materials required for the wires and cables required by the locomotives are very high and must be halogen-free. At the same time, the national technical department has also formulated corresponding technical standards. It is basically difficult to find qualified low-smoke and halogen-free high-performance sheathing materials for rolling stock, which are completely imported from abroad