Halogen-free flame retarding cross-linked polyethylene and preparation method thereof

Abstract

The invention discloses halogen-free flame retarding cross-linked polyethylene and a preparation method thereof. The halogen-free flame retarding cross-linked polyethylene is prepared from cross-linked polyethylene, polyethylene, a high-performance nitrogen-phosphorus flame retardant, a toughening agent, an antistatic agent, and a solid filling material. According to the invention, through the optimization of the halogen-free flame retardant and the formula, the dispersion effects of the flame retardant, the toughening agent and the solid filling material in the polyethylene matrix are good, such that a good flame retarding effect is achieved. Also, with the material, the smoke level during combustion is low, the thermal desorption rate is reduced, the impact resistance is good, the antistatic performance is good, the comprehensive mechanical property is excellent, the formulation is non-toxic and environment-friendly, and the raw materials are easy to obtain. The preparation technology is simple, feasible, easy to operate, and stable in production. The obtained material has good surface quality, and can be extruded or molded through injection. With the method, continuous scaled production can be carried out. The method can be widely applied in fields of package materials, home appliances and automobile parts.

Description

technical field [0001] The invention relates to the technical field of flame-retardant polyethylene, in particular to a halogen-free flame-retardant cross-linked polyethylene and a preparation method thereof. Background technique [0002] XLPE has excellent electrical insulation, low temperature resistance, excellent chemical stability and dielectric properties, and is widely used in packaging materials, pipes, home appliances, auto parts, and wires and cables. With the improvement of people's requirements for the performance of plastic products, the research and application of flame retardant cross-linked polyethylene has also been developed rapidly. In the past, the research on flame-retardant cross-linked polyethylene mostly used halogen-containing flame retardants. Although the flame-retardant effect is good and the addition amount is low, the amount of smoke generated during the flame-retardant process is large, and toxic and corrosive hydrogen halides are released. Ga...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defects of the existing halogen-free flame-retardant cross-linked polyethylene that the flame retardant is easy to agglomerate, the addition amount is large, and the mechanical properties are poor, and to provide a halogen-free flame-retardant cross-linked polyethylene and its preparation method, the cross-linked polyethylene has good flame retardant effect, low smoke generation, good impact resistance and antistatic performance, and excellent comprehensive mechanical properties

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