A kind of high nitrogen content hyperbranched triazine-based char-forming agent and its preparation method and flame retardant composite material

Abstract

The invention provides a high nitrogen content hyperbranched triazine char-forming agent and its preparation method and flame-retardant composite material, adopting a three-stage heating method, adding cyanuric chloride and Acetone, then slowly add diethanolamine, stir for 2~4h; raise the temperature to 40~60°C, add diethylenetriamine and sodium carbonate aqueous solution dropwise, stir for 4~8h; raise the temperature to 90~110°C, add dropwise diethylenetriamine and Sodium carbonate aqueous solution, stirred for 5~9h, cooled, suction filtered, washed, dried and pulverized to obtain charcoal agent. The char forming agent of the present invention has the advantages of non-toxicity, low cost, high thermal stability, difficulty in hydrolysis, and little damage to the mechanical properties of the flame-retardant matrix, etc., and can be used for polypropylene (PP), nylon-66 (PA-66), polypropylene Flame-retardant char-forming agent for ethylene (PE) and other materials, easy to mass-produce. The structural formula of the carbon forming agent is shown in the following formula:.

Description

technical field [0001] The patent of the invention belongs to the technical field of polymer flame-retardant materials, and relates to an intumescent flame-retardant char-forming agent and its preparation method and a flame-retardant composite material, in particular to a hyperbranched triazine-based char-forming agent with high nitrogen content and its Preparation. Background technique [0002] Intumescent flame retardant (IFR) has the advantages of no halogen, low smoke, low toxicity, and no corrosive gas generation. It has three basic elements, namely acid source, gas source and carbon source. Carbon sources are also called charring agents, which are the basis for forming the foam carbonization layer. Some polyols with high carbon content are often used as charring agents for mixing IFR, such as pentaerythritol, starch, phenolic resin, etc., but these charring agents are also There are defects such as insufficient thermal stability and easy migration. [0003] Therefore...

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Problems solved by technology

The Chinese patent with application number 201310219592.1 "Preparation method of hyperbranched triazine charcoal agent" (authorized announcement number is CN103333336 B), the Chinese patent with application number 201610410728.0 "A kind of triazine macromolecule halogen-free flame retardant synthetic Charcoal compound and preparation method thereof " (authorized announcement number is CN106009037B), although the disclosed method of the above-mentioned patent has obtained some effects, but the reaction time of synthesizing triazine series charcoal agent is long, nitrogen content is low, and the charcoal agent obtained is hot poor stability

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