Inorganic low smoke zero halogen fire retardant and preparation method thereof

Abstract

The invention relates to an inorganic low smoke zero halogen fire retardant and a preparation method thereof, which relates to surface modification processing and a processing method of the inorganic fire retardant and the method for preparing the low smoke zero halogen fire retardant. The method includes starting a heating system, enabling temperature to reach 80-260 DEG C which is required by process requirements, starting a continuous activation machine, adding 0.1 micrometer to 100 micrometer inorganic fire retardant into a feeding system, stably and evenly conveying materials to the activation chamber through the feeding system, conveying mixed liquid composed of coupling agents, adsorbents and dispersing agents dosed through a metering device to a nozzle, spraying the active agents into the active chamber quantitatively through the nozzle, completely mixing the inorganic fire retardants and the active agents under the processing temperature of 80 DEG C to 260 DEG C through an agitator blade of 2000 to 4000 turn / min, processing materials in the active chamber for 5 to 20 minutes and obtaining products through a dust removing system. The products of the fire retardant and the preparation method are good in quality stability, short in product production period, low in cost and friendly to environment and human.

Description

technical field [0001] The invention relates to an inorganic low-smoke and halogen-free flame retardant and a preparation method thereof, in particular to a surface modification treatment and processing method of the inorganic flame retardant. Background technique [0002] The surface treatment method of inorganic flame retardants usually uses ordinary mixers or high-speed mixing mixers for surface treatment. The disadvantages are that the equipment rotates slowly, the temperature range is small, and the processing has negative effects on human health and environmental sanitation. The modified flame retardant powder prepared by this method has a low degree of activation on the powder surface, generally below 85%. When it is added to polymer materials, its fluidity, dispersibility, compatibility and processing Stability is not ideal. [0003] In order to overcome the above disadvantages, the present invention proposes an inorganic low-smoke and environment-friendly flame ret...

AI Technical Summary

Problems solved by technology

[0002]The surface treatment method of inorganic flame retardants is usually carried out by ordinary mixer or high-speed mixing mixer. The disadvantage is that the equipment rotates slowly and the temperature range is small. Negative impact on human health and environmental sanitation

The modified flame retardant powder prepared by this method has a low degree of activation on the powder surface, generally below 85%. When it is added to polymer materials, its fluidity, dispersibility, compatibility and processing The stability is not very good