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Phosphorus-nitrogen synergistic self-flame-retardant acrylic emulsion and preparation method thereof

A technology of acrylic emulsion and acrylic acid, which is applied in the direction of fireproof coatings, etc., can solve the problems of great harm to the human body, and achieve the effect of not easy to dissociate and lasting flame retardancy

Inactive Publication Date: 2018-02-23
陈晨特
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the invention uses halogen-modified vinyl monomers, which leads to the disadvantage that the emulsion releases halogens after being exposed to fire, which is harmful to the human body.

Method used

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  • Phosphorus-nitrogen synergistic self-flame-retardant acrylic emulsion and preparation method thereof
  • Phosphorus-nitrogen synergistic self-flame-retardant acrylic emulsion and preparation method thereof
  • Phosphorus-nitrogen synergistic self-flame-retardant acrylic emulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] a. Synthesis of phosphorus-nitrogen synergistic self-flame-retardant monomer: Add dimethyl amine ethyl phosphate and glycidyl methacrylate in a molar ratio of 1:1 to the reactor, add 30 parts of ethyl acetate to dissolve, Heat to 80°C for 3 hours and cool to room temperature; then add 30 parts of 2% sodium hydroxide aqueous solution and stir to extract the water layer, dry and wash to obtain a phosphorus-nitrogen synergistic self-flame retardant monomer.

[0025] b. Seed emulsion polymerization: Add 40 parts of deionized water, 2 parts of vinyl polyethylene glycol, and 4 parts of methacrylic acid in a four-port reaction vessel equipped with a speed-adjustable stirrer, a return pipe, a dropping funnel and a thermometer Methyl ester, 5 parts of soft butyl methacrylate, 1 part of hydroxyethyl methacrylate, 2 parts of pH sodium bicarbonate solution; emulsify under high-speed stirring at 1300-1500r / min to obtain milky white pre-emulsified mixed monomer emulsion; heat up When...

Embodiment 2

[0028] a. Add diethyl aminopropyl phosphate and glycidyl methacrylate into the reactor at a molar ratio of 1:1, add 30 parts of ethyl acetate to dissolve, heat to 40°C for 4 hours and cool to room temperature; then Add 20 parts of 2% sodium hydroxide aqueous solution, stir and extract the water layer, dry and wash to obtain a phosphorus-nitrogen synergistic self-flame retardant monomer.

[0029] b. Seed emulsion polymerization: In a four-port reaction vessel equipped with a speed-adjusting stirrer, a reflux pipe, a dropping funnel and a thermometer, add 45 parts of deionized water, 2 parts of allyl-2-propyl sodium ethanesulfonate, 4 parts of methyl acrylate, 2 parts of butyl methacrylate, 2 parts of hydroxyethyl methacrylate, 1.5 parts of ammonia water; emulsify under high-speed stirring at 1500r / min to obtain a milky white pre-emulsified mixed monomer emulsion; when the temperature is raised to 80°C Reduce the speed to 800r / min, add dropwise 1.5 parts of 10% ammonium persulfa...

Embodiment 3

[0032] a. Synthesis of phosphorus-nitrogen synergistic self-flame retardant monomer: Add dimethyl aminopropyl phosphate and glycidyl acrylate in a molar ratio of 1:1 to the reactor, add 30 parts of ethyl acetate to dissolve, heat to 60 After reacting at ℃ for 3.5 hours, cool to room temperature; then add 35 parts of 2% sodium hydroxide aqueous solution, stir and extract the water layer, dry and wash to obtain a phosphorus-nitrogen synergistic self-flame retardant monomer.

[0033] b. Seed emulsion polymerization: Add 38 parts of deionized water, 1 part of octadecyl dimethyl vinyl phenyl chloride ammonium, 4.5 parts of methyl methacrylate, 5 parts of propyl acrylate, and 3 parts of ammonia water; emulsify under high-speed stirring at 1000r / min to obtain a milky white pre-emulsified mixed monomer emulsion; when the temperature rises to 75°C, reduce the speed to 800r / min min, 1.5 parts of 10% potassium persulfate solution was added dropwise to initiate the reaction at 80°C for 2h...

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Abstract

The invention relates to a phosphorus-nitrogen synergistic self-flame-retardant acrylic emulsion and a preparation method thereof. The method comprises the following steps: synthesizing a phosphorus flame-retardant vinyl monomer, and carrying out an emulsion copolymerization reaction on an acrylate monomer and the vinyl group-containing reactive flame-retardant vinyl monomer containing nitrogen and phosphorus to synthesize the self-flame-retardant acrylic emulsion containing nitrogen and phosphorus. The emulsion has a flame retardation effect without adding other flame retardants, and the flame-retardant phosphorus and nitrogen elements are combined with acrylic resin through chemical bonds and do not dissociate, so the emulsion has long-lasting flame resistance, and can be used in the fireproofing and flame retardation of woodenware coatings, anticorrosive coatings and building interior and exterior coatings.

Description

technical field [0001] The invention relates to a self-flame-retardant emulsion, in particular to a phosphorus-nitrogen synergistic self-flame-retardant acrylic emulsion and a preparation method thereof, belonging to the technical field of water-based synthetic resin. technical background [0002] With the research and development of acrylic copolymers and the increasing requirements for environmental protection, acrylic emulsions are widely used in coating film-forming substrates, textile printing and dyeing binders, and are used in daily chemicals, chemical power sources, functional films, medical polymers, Nanomaterials, water treatment, etc. Among them, acrylic emulsions play an important role as building interior and exterior wall coatings, anti-corrosion coatings, and wood coatings. More and more people pay attention to the flame retardancy and fire prevention of acrylic emulsions and their coatings. [0003] Chinese Patent No. CN201510547845.7 discloses a heat-resist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F220/14C08F230/02C08F220/28C09D133/10C09D5/18
CPCC08F220/18C08F220/1803C08F220/1804C09D5/18C09D133/10C08F220/14C08F230/02C08F220/281
Inventor 陈晨特
Owner 陈晨特
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