Preparation method of smoke suppressant

Abstract

Belonging to the technical field of smoke suppression, the invention discloses a preparation method of a smoke suppressant. Sepiolite powder involved in the invention is a magnesium-rich silicate compound, and can produce magnesium hydroxide crystals and phosphate under the action of ammonia gas and phosphate, the micro-porous structure in sepiolite itself is filled with magnesium hydroxide crystals, sepiolite powder is rich in high-temperature resistant silicate fiber crystals, polymer molten drops do not drip easily under the action of large molecular action force, thus keeping the integrityof the polymer matrix skeleton, and achieving flame retardant purpose. The melamine and sodium pyrophosphate in the smoke suppressant react to generate reacts with melamine pyrophosphate, a sepiolite-based smoke suppression carrier can expand during combustion at a high temperature state to coat melamine pyrophosphate, the residual carbon rate increases, and the smoke emission decreases, thusreaching the purposes of flame retardance and smoke suppression. The method provided by the invention uses a ferrous sulfate solution and hydrogen peroxide to oxidize corn starch, and improves the compatibility of modified corn starch and the polymer resin.

Description

technical field [0001] The invention discloses a preparation method of a smoke suppressant and belongs to the technical field of smoke suppression. Background technique [0002] Smoke suppressant is a compound that can suppress the amount of smoke generated by various polymer materials during combustion. Through special chemical and physical effects, it can significantly reduce the smoke of various flame-retardant polymer materials such as wood under the condition of a small amount of use. , plastics, rubber, coatings, adhesives and thermal insulation foam materials in the combustion process of smoke density and smoke, and appropriately improve the flame retardancy and oxygen index of these materials. The characteristic is to reduce the amount of smoke generated by product combustion and play a role in delaying combustion. The application fields include building decoration material industry, plastic industry, thermal insulation material industry, packaging material industry...

AI Technical Summary

Problems solved by technology

[0007] The main technical problem to be solved by the present invention is that a large amount of toxic smoke and CO are easily produced when burning polymer materials, wherein CO is the main toxic gas that causes casualties in fires. At present, most of the smoke suppressants use expensive ammonium molybdate and trioxide Molybdenum has a good smoke suppression effect, but has poor compatibility with plastics and has no conversion effect on CO generated by combustion. A preparation method for smoke suppressant is provided