Compound flame retardant, flame retardant resin and preparation method thereof

Abstract

The invention discloses a compound flame retardant, a flame retardant resin and a preparation method thereof, wherein the flame retardant comprises 0.1-50 wt% of mesoporous molecular sieve and 50-99.9 wt% of nanometre modified organic silicon flame retardant; the preparation method comprises the following steps of: (1) drying inorganic mesoporous molecular sieve particles in vacuum way to remove moisture and small air molecules in molecular sieve pore canals; (2) mechanically stirring to mix the mesoporous molecular sieve and the organic silicon flame retardant fully; and (3) further oscillating ultrasonically to disperse the mesoporous molecular sieve uniformly in the organic silicon flame retardant to form the mesoporous molecular sieve / modified organic silicon compound flame retardant.The compound flame retardant prepared by the invention plays roles of both the self-flame retardant function of the organic flame retardant molecules and the mesoporous molecular sieve, and the synergistic effect between the organic flame retardant molecules and the mesoporous molecular sieve. The flame retardant efficacy is improved greatly. In addition, the mesoporous molecular sieve can also play a releasing role of a microcapsule. As a novel highly efficient halogen-free composite flame retardant, the compound flame retardant can be widely applied to the flame retarding field of the polymer material.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a composite flame retardant, a flame retardant resin and a preparation method thereof. Background technique [0002] In recent years, polymers and their alloy materials have been widely used in various fields such as electronics, communication cables, transportation, and construction. However, since most polymer materials are combustible, if flame retardancy is not considered, accidents with large losses such as fires will often be caused. In order to reduce the flammability of polymer materials, prevent fire accidents and reduce economic losses, people pay more and more attention to flame retardant technology. [0003] Generally, adding flame retardants to polymer materials can make them flame retardant. At present, among the flame retardants that have been developed, halogen flame retardants such as chlorine or bromine occupy a considerable proportion, and their flame retarda...

AI Technical Summary

Problems solved by technology

At present, the application of mesoporous molecular sieves in polymer composites reported at home and abroad mostly focuses on the use of mesoporous molecular sieves as "nano-reactors" or "catalyst loading", and the use of inorganic mesoporous molecular sieves in the preparation of composite flame retardants. See literature and patent reports

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