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Flame-retardant polyacrylate emulsion and preparation method thereof

A technology of polyacrylate emulsion and acrylate, applied in the field of flame retardant polyacrylate emulsion and its preparation, can solve the problems of weakened flame retardant performance, uneven distribution, large amount of flame retardant added, etc., so as to reduce the flammability The effect of gas generation, increasing polymerization reaction rate, and improving adhesion performance

Pending Publication Date: 2019-06-18
浙江来往新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the flame retardant modification method of acrylate emulsion is mainly to add flame retardant to it for flame retardant modification. Capacitance is generally poor, which has a great impact on the performance of the emulsion itself and the mechanical properties and appearance of the prepared product
[0003] Patent CN201510574078.9 uses vinyl silane and acrylate monomer to copolymerize to prepare silane copolymer, and then uses MHT of silane copolymer to modify the surface to obtain an organic coated MHT composite flame retardant material, which is halogen-free flame retardant material, but the amount of flame retardant added is large, the flame retardant itself has no chemical connection with the matrix, and the compatibility is poor
Chinese patent CN201510547845.7 provides a heat-resistant flame-retardant modified acrylic emulsion coating, which improves the flame retardancy of the coating by adding brominated epoxy resin and boron phenolic resin. The coating has good heat resistance and water resistance, and The flame retardant effect is good, but although the brominated epoxy resin has good bonding performance, it has no chemical bond with the acrylic resin emulsion itself, and the brominated epoxy resin is simply dispersed in the coating, and there are disadvantages such as uneven distribution. It can dissociate on the surface of the acrylic resin after film formation, and the flame retardant performance will weaken over time, which cannot meet the high standard use requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A preparation method of flame-retardant polyacrylate emulsion, comprising the following steps:

[0033] (1) Ingredients according to the following formula: acrylate monomer 45kg, flame retardant emulsion 6kg, emulsifier 3kg, initiator 1kg, antimony compound 7kg, inorganic flame retardant 0.56kg, intumescent flame retardant 0.8kg and deionized water 33kg;

[0034] (2) Add half of deionized water, half of emulsifier, flame retardant emulsion, and acrylate monomer into the emulsification kettle, adjust the pH value to 6.5-7.5, control the speed at 1000-2000r / min, and perform pre-emulsification for 17 minutes. Stir to obtain pre-emulsified mixed monomer emulsion;

[0035] (3) Add the remaining deionized water and the remaining emulsifier into the emulsification kettle, heat to 65°C under stirring, add an initiator to initiate the reaction, and carry out emulsion seed polymerization;

[0036] (4) After the seed polymerization is completed, control the temperature at 83°C, ...

Embodiment 2

[0045] A preparation method of flame-retardant polyacrylate emulsion, comprising the following steps:

[0046] (1) Ingredients according to the following formula: acrylate monomer 50kg, flame retardant emulsion 10kg, emulsifier 5kg, initiator 2kg, antimony compound 10kg, inorganic flame retardant 1kg, intumescent flame retardant 1kg and deionized water 40kg;

[0047] (2) Add half of deionized water, half of emulsifier, flame retardant emulsion, and acrylate monomer into the emulsification kettle, adjust the pH value to 6.5-7.5, control the speed at 1000-2000r / min, and perform pre-emulsification for 30 minutes. Stir to obtain pre-emulsified mixed monomer emulsion;

[0048] (3) Add the remaining deionized water and the remaining emulsifier into the emulsification kettle, heat to 60-70°C under stirring, add an initiator to initiate the reaction, and carry out emulsion seed polymerization;

[0049](4) After the seed polymerization is completed, control the temperature at 85°C, re...

Embodiment 3

[0058] A flame-retardant polyacrylate emulsion, specifically prepared by the following method:

[0059] (1) Ingredients according to the following formula: 40kg of acrylate monomer, 5kg of flame retardant emulsion, 2kg of emulsifier, 0.5kg of initiator, 5kg of antimony compound, 0.5kg of inorganic flame retardant, 0.5kg of intumescent flame retardant and deionized 30kg of water;

[0060] (2) Add half of deionized water, half of emulsifier, flame retardant emulsion, and acrylate monomer into the emulsification kettle, adjust the pH value to 6.5-7.5, control the speed at 1000-2000r / min, and perform pre-emulsification for 10 minutes. Stir to obtain pre-emulsified mixed monomer emulsion;

[0061] (3) Add the remaining deionized water and the remaining emulsifier into the emulsification kettle, heat to 60°C under stirring, add an initiator to initiate the reaction, and carry out emulsion seed polymerization;

[0062] (4) After the seed polymerization is completed, control the tem...

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PUM

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Abstract

The invention relates to a flame-retardant polyacrylate emulsion and a preparation method thereof. The flame-retardant polyacrylate emulsion is prepared from, by weight, 40-50 parts of acrylate monomer, 5-10 parts of flame-retardant emulsion, 2-5 parts of emulsifier, 0.5-2 parts of initiator, 5-10 parts of antimony compound, 0.5-1 part of inorganic flame retardant, 0.5-1 part of intumescent flameretardant and 30-40 parts of deionized water. Compared with the prior art, the flame-retardant polyacrylate emulsion has the advantages of being excellent in flame retardancy and reaching V0 in flame-retardant grade.

Description

technical field [0001] The invention relates to the technical field of fine chemicals, in particular to a flame-retardant polyacrylate emulsion and a preparation method thereof. Background technique [0002] Acrylic emulsion is widely used in coatings, printing and dyeing and adhesives and other fields. However, acrylate is a flammable polymer, which is easy to burn in case of fire, which brings huge safety hazards to people's production and life. Therefore, people put forward higher requirements on the flame retardancy of acrylate. At present, the flame retardant modification method of acrylate emulsion is mainly to add flame retardant to it for flame retardant modification. Capacitance is generally poor, which has a great impact on the performance of the emulsion itself and the mechanical properties and appearance of the prepared product. [0003] Patent CN201510574078.9 uses vinyl silane and acrylate monomer to copolymerize to prepare silane copolymer, and then uses MH...

Claims

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Application Information

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IPC IPC(8): C08L33/08C08L27/06C08L61/06C08K13/06C08K9/00C08K3/04C08K3/22C08K5/053C08F220/18C08F220/14C08F220/06
Inventor 张来炳
Owner 浙江来往新材料有限公司
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