Composite flame retardant containing microcapsule-coated intumescent flame retardant and preparation method

Abstract

The invention belongs to the field of flame retardant materials, and particularly relates to a composite flame retardant containing a microcapsule-coated intumescent flame retardant and a preparation method. The composite flame retardant containing the microcapsule-coated intumescent flame retardant consists of the following components in percentage by mass: 60-94 percent of microcapsule intumescent flame retardant, 5-25 percent of flame-retardant synergist, 0.9-10 percent of smoke suppressant and 0.1-5 percent of hindered amine light stabilizer. The preparation method comprises the following steps: preparing the microcapsule-coated intumescent flame retardant; placing the microcapsule-coated intumescent flame retardant, the flame-retardant synergist, the smoke suppressant and the hindered amine light stabilizer into a high-speed mixer for mixing uniformly, and discharging to obtain the composite flame retardant containing the microcapsule-coated intumescent flame retardant. Multiple components in the composite flame retardant can play roles in retarding flame in a synergetic way, so that the flame retardance of a high polymer material is improved remarkably, the production of toxic and harmful smog in a burning process can be suppressed, and the flame retarding efficiency is increased greatly.

Description

technical field [0001] The invention belongs to the field of flame retardant materials, and in particular relates to a composite flame retardant containing a microcapsule-coated expansion flame retardant and a preparation method thereof. Background technique [0002] In recent decades, the application of polymer materials has advanced by leaps and bounds, and has received extensive attention in various fields, and the output of polymer materials has also increased year by year. Compared with metal materials and inorganic materials, polymer materials have unique physical properties and processing properties, but most polymer materials are flammable, and when burned, they emit toxic fumes that suffocate people. According to statistics, among the people who died in fire, more than 80% died of suffocation due to smoke loss or suffocation due to inhalation of toxic gas. It can be seen that the flammability of polymer materials brings hidden dangers to personal safety. Therefore...

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Problems solved by technology

Most of the flame retardants in the above prior art use melamine-formaldehyde resin prepolymer, urea-formaldehyde resin prepolymer or epoxy resin to coat a single flame retardant such as ammonium polyphosphate, melamine phosphate, and the flame retardant of a single flame retardant Inefficiency, therefore, requires very high loadings to make the material flame retardant

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