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A kind of preparation method of phosphorus nitrogen boron ternary intumescent flame retardant and its product and application

An intumescent flame retardant, phosphorus nitrogen boron technology, applied in the production of bulk chemicals, etc., can solve the problems of no good smoke suppression effect, low flame retardant efficiency, etc., to achieve good smoke suppression effect, excellent flame retardant effect, The effect of improving the survival rate

Active Publication Date: 2019-04-16
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the shortcomings of the existing phosphorus-nitrogen-based flame retardants, which have low flame-retardant efficiency and no good smoke suppression effect, the purpose of the present invention is to provide a phosphorus-nitrogen-boron ternary intumescent flame retardant and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Accurately weigh melamine, phosphoric acid, boric acid, cross-linking agent and surfactant (the molar ratio of melamine to phosphoric acid is 1:1, the molar ratio of melamine to boric acid is 1:1, and the molar ratio of melamine to cross-linking agent is 1: 0.03, the mass ratio of melamine to surfactant is 1:0.05, the crosslinking agent is pentaerythyl glycol, and the surfactant is sodium lauryl sulfate), it is added to a certain amount of distilled water (the mass ratio of melamine to distilled water is 1:100). Stir evenly, then add it into a supercritical reactor, and control it at 80°C and 20MPa to react for 3h. After releasing the pressure, filter and dry to obtain the phosphorus nitrogen boron ternary flame retardant.

Embodiment 2

[0020] Accurately weigh melamine, phosphoric acid, boric acid, cross-linking agent and surfactant (the molar ratio of melamine to phosphoric acid is 1:2, the molar ratio of melamine to boric acid is 1:0.8, and the molar ratio of melamine to cross-linking agent is 1: 0.05, the mass ratio of melamine to surfactant is 1:0.01, the crosslinking agent is cyanuric acid, and the surfactant is sodium dodecylsulfonate), it is added to a certain amount of distilled water (the mass ratio of melamine to distilled water is 1:300). Stir evenly, then add it into a supercritical reactor, control the reaction at 70°C and 35MPa for 2.5h. After releasing the pressure, filter and dry to obtain the phosphorus nitrogen boron ternary flame retardant.

Embodiment 3

[0022] Accurately weigh melamine, phosphoric acid, boric acid, cross-linking agent and surfactant (the molar ratio of melamine to phosphoric acid is 1:1.5, the molar ratio of melamine to boric acid is 1:2, and the molar ratio of melamine to cross-linking agent is 1: 0.08, the mass ratio of melamine to surfactant is 1:0.01, the crosslinking agent is cellulose, and the surfactant is cetyltrimethylammonium bromide), which is added to a certain amount of distilled water (the ratio of melamine to distilled water The mass ratio is 1:300). Stir evenly, then add it into a supercritical reactor, and control it at 65°C and 30MPa to react for 2h. After releasing the pressure, filter and dry to obtain the phosphorus nitrogen boron ternary flame retardant.

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Abstract

The invention provides a P-N-B ternary IFR (intumescent flame retardant) as well as a preparation method and an application thereof. Melamine, phosphoric acid, boric acid, a crosslinking agent and a surfactant are added to distilled water to be dissolved, the solution is poured in a supercritical reaction kettle, a CO2 high-pressure pump is turned on, the temperature of the reaction kettle is increased, the solution reacts for 1-5 h, a pressure relief opening is opened to reduce the pressure to the normal pressure, a turbid solution is obtained, the solution is filtered, washed and subjected to vacuum drying, and the P-N-B ternary IFR is obtained. The P-N-B ternary IFR prepared with the method has a better smoke inhibiting effect as well as an excellent flame-retardant effect, can greatlyincrease the survival rate of people in case of a fire and has great application prospects.

Description

technical field [0001] The invention belongs to the field of flame retardant preparation, and in particular relates to a phosphorus, nitrogen and boron ternary expansion type flame retardant, a preparation method and application thereof. Background technique [0002] Polymer materials are widely used in production and life because of their low production cost, good mechanical properties, non-toxicity, light weight, corrosion resistance, good electrical properties, easy processing, and easy recycling. However, most polymers are flammable materials. Generally, the limiting oxygen index (LOI) of polymer materials is only 17-20%, and a lot of toxic and corrosive gases and smoke will be produced when polymers are burned. The consequences caused by the fire are even more serious. Halogenated flame retardant materials will produce a lot of smoke and toxic and harmful gases when burned. Today, with increasingly stringent environmental protection requirements, the use of halogenated...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K13/02C08K5/3492C08K3/32C08K3/38C08L25/06
CPCY02P20/54
Inventor 何丹农徐少洪张芳林琳陈超王艳丽金彩虹
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH