Fullerene-modified phenylphosphonic acid rare earth hybrid, polycarbonate composite material containing it and preparation method thereof

Abstract

The invention discloses a fullerene-modified phenyl phosphonic acid rare-earth hybrid, a polycarbonate composite material containing the same and a preparation method of the fullerene-modified phenyl phosphonic acid rare-earth hybrid. The preparation method of the hybrid comprises the steps of dissolving fullerene into xylene to form a fullerene solution; mixing and dispersing a phenyl phosphonic acid rare-earth salt into the xylene to form a suspension liquid; dropwise adding the prepared solution into the suspension liquid and refluxing at a constant temperature of 65-95 DEG C or 18-24h; and carrying out suction filtration on a reaction solution after reflux reaction, washing and drying to constant weight to obtain solid particles, namely the fullerene-modified phenyl phosphonic acid rare-earth hybrid. The problem that heat and a combustible gas are greatly released within short time due to sudden collapse of the material under the high temperature action is solved.

Description

technical field [0001] The invention relates to the synthesis and modification of organic compounds, the preparation of polymer composite materials or the process of batching, specifically a kind of fullerene-modified phenylphosphonic acid rare earth hybrid, polycarbonate composite material containing it and its preparation method . Background technique [0002] Rare earth is a characteristic strategic resource in my country, with [Xe]4f 0-14 5d 1-10 6s 2 The electronic configuration of rare earth can catalyze various reactions such as dehydrogenation, oxidation, crosslinking, and char formation during polymer combustion, which substantially affects the combustion process and combustion results of materials. A research hotspot. [0003] According to existing research reports, rare earth compound flame-retardant polymers mainly achieve excellent flame-retardant effects through two mechanisms: [0004] First, using the Lewis acidity, strong coordination ability and comple...

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Problems solved by technology

However, a large number of highly active free radicals, heat released by combustion, and various flammable gases that appear during the polymer degradation process are all confined under the phenylphosphonic acid rare earth crystal carbon layer, which will cause a relatively concentrated mass of the material. , heat and smoke release, so that the heat release rate, smoke release rate, mass loss rate, etc. in the combustion process of the material have a large peak, and the combustion process is violent around the peak.

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