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A preparation method of coated flame retardant with excellent electrical properties

A flame retardant and coating type technology, applied in the field of coating flame retardant preparation, can solve the problems of large amount of DOPO derivatives, high cost, uneven dispersion, etc., to solve the interface problem and uneven dispersion, solve the Large dosage, good halogen-free flame retardant effect

Active Publication Date: 2021-06-29
洛阳熙之奥新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a method for preparing a coated flame retardant with excellent electrical properties, so that it can effectively solve the problem of the interface between the filler and the matrix and the problem of uneven dispersion, and can also solve the problem of a large amount of DOPO derivatives. , the problem of high cost

Method used

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  • A preparation method of coated flame retardant with excellent electrical properties
  • A preparation method of coated flame retardant with excellent electrical properties
  • A preparation method of coated flame retardant with excellent electrical properties

Examples

Experimental program
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Effect test

Embodiment 1

[0045] Such as figure 1 As shown, this embodiment provides a coated flame retardant, the core material is phenolic resin powder with a particle size Dv(90) of 18 μm, and the outer surface of the core material is coated with DOPO-terephthalene A coating layer of methanol; the particle size Dv(90) of the coated flame retardant is 30 μm, the moisture content is 0.40%, and the bulk density is 350 g / L.

[0046] The preparation method of described coating type flame retardant comprises the steps:

[0047]1) Evenly disperse 10g of phenolic resin powder into 100ml of toluene to make suspension A, preheat to 60°C;

[0048] 2) Add 43.2g DOPO and 200ml toluene into a 500ml four-neck flask equipped with a stirrer, thermometer and reflux condenser, heat and stir to a temperature of 60°C until DOPO is completely dissolved;

[0049] 3) Add the suspension A to the above (2), stir evenly, and heat up to the reaction temperature of 90°C;

[0050] 4) Within 1.5 hours, slowly add 13g of tereph...

Embodiment 2

[0053] Such as figure 2 As shown, this embodiment provides a coated flame retardant, the core material adopts core-shell rubber powder with a particle size Dv(90) of 0.25 μm, and the outer surface of the core material is coated with DOPO-pair A coating of phthalaldehyde. The particle size Dv(90) of the coated flame retardant is 1 μm, the moisture content is 0.15%, and the bulk density is 100 g / L.

[0054] The preparation method of described coating type flame retardant comprises the steps:

[0055] 1) Evenly disperse 5g of core-shell rubber powder into 100ml of tetrahydrofuran to make suspension A, and preheat to 70°C;

[0056] 2) Add 54.0g DOPO and 200ml tetrahydrofuran into a 500ml four-neck flask equipped with a stirrer, thermometer and reflux condenser, heat and stir to a temperature of 70°C until DOPO is completely dissolved;

[0057] 3) Add the suspension A to the above (2), stir evenly, and heat up to the reaction temperature of 90°C;

[0058] 4) Within 1.5 hours, ...

Embodiment 3

[0061] Such as image 3 As shown, this embodiment provides a coated flame retardant, the core material uses hollow glass microspheres with a particle size Dv(90) of 25 μm, and the outer surface of the core material is coated with DOPO-benzoquinone the cladding layer. The particle size Dv(90) of the coated flame retardant is 35 μm, the moisture content is 0.25%, and the bulk density is 500 g / L.

[0062] The preparation method of described coating type flame retardant comprises the steps:

[0063] 1) Evenly disperse 15g of hollow glass microspheres into 100ml of N,N-dimethylformamide to make suspension A, preheat to 80°C;

[0064] 2) Add 43.2g DOPO and 200ml N, N-dimethylformamide into a 500ml four-neck flask equipped with a stirrer, a thermometer and a reflux condenser, heat and stir to a temperature of 80°C until DOPO is completely dissolved;

[0065] 3) Add the suspension A to the above (2), stir evenly, and heat up to the reaction temperature of 100°C;

[0066] 4) Within...

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Abstract

The invention belongs to the technical field of electronic materials, and specifically relates to a preparation method of a coated flame retardant with excellent electrical properties. The preparation method of a kind of coated flame retardant with excellent electrical properties proposed is: select low Dk, low Df core material; the outer surface of the core material is coated with DOPO derivatives as flame retardant layer; the core material The mass ratio to the flame retardant layer is 1:1~1:100; the bulk density of the coated flame retardant is 50 g / L~1000 g / L; the moisture content of the coated flame retardant is 0.01 wt%~5 wt%; the invention not only effectively solves the problem of the interface between the filler and the matrix and the problem of uneven dispersion, but also solves the problem of large dosage and high cost of DOPO derivatives or other filled flame retardants.

Description

technical field [0001] The invention belongs to the technical field of electronic materials, and specifically relates to a preparation method of a coated flame retardant with excellent electrical properties. Background technique [0002] Today's society has entered a highly informationized society, and the rapid development of the electronic information industry and the printed circuit board industry has driven the continuous development of the world's copper clad laminate manufacturing industry. The rapid development of electronic packaging technology in the electronic information industry, especially in the printed circuit board (PCB) industry, has prompted copper clad laminates to become thinner, higher speed, high heat resistance, high heat dissipation, green, CAF resistance, high CTI, high strength, high mold Quantity, high performance, multi-function, high reliability direction. [0003] On the one hand, traditional copper-clad laminates are flame-retardant through br...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/00C08K5/5313C09J11/06C09J163/00
CPCC08K5/5313C08K9/00C09J11/06C09J163/00
Inventor 李勇王静万俊杰
Owner 洛阳熙之奥新材料科技有限公司
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