Surface-chemically-modified mica iron oxide powder and preparation method thereof

A technology of mica iron oxide and surface chemistry, which is applied in the treatment of dyed polymer organic compounds, fibrous fillers, coatings, etc., can solve the problems affecting the quality and storage stability of coatings, agglomeration of mica iron oxide powder, and damage to lamellar structure, etc. problem, to achieve the effect of no agglomeration, uniform surface modification, and no change in particle size

Inactive Publication Date: 2019-08-16
河南青山环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the inertness of the surface of micaceous iron oxide and the large specific gravity, it has poor compatibility with resins in coatings and settles quickly, which affects the quality and storage stability of coatings. Therefore, mica iron oxide powder used in coatings Surface modification is often required; the surface modification of mica iron oxide powder in the prior art mostly adopts physical coating method, and the surface modified mica iron oxide powder obtained by physical coating method has uneven coating and agglomeration of mica iron oxide powder. , larger particle size, smaller diameter-thickness ratio, and damaged lamellar structure

Method used

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  • Surface-chemically-modified mica iron oxide powder and preparation method thereof
  • Surface-chemically-modified mica iron oxide powder and preparation method thereof
  • Surface-chemically-modified mica iron oxide powder and preparation method thereof

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preparation example Construction

[0027] Such as figure 1 , figure 2 , image 3 Shown, a kind of surface chemically modified mica iron oxide powder and preparation method thereof, comprises the following steps:

[0028] Step 1. Synthesis of chemical modifiers

[0029] 1. Prepare the mixed monomer of acrylic acid and phosphoric acid ester, and prepare the aqueous initiator solution.

[0030] 2. Add 30% mixed monomer, 40% initiator aqueous solution, and deionized water into the reaction kettle with stirring and reflux condenser, heat to 80-85°C with a constant temperature water bath, and carry out solution polymerization for 0.5h.

[0031] 3. Add the remaining 70% of the mixed monomer and 60% of the initiator aqueous solution to the reaction kettle slowly and simultaneously, for 3-4 hours, while maintaining the temperature of the material at 80-85°C, and continue the solution polymerization reaction.

[0032] 4. After the dropwise addition of the mixed monomer and initiator aqueous solution is completed, ad...

Embodiment 1

[0042] Step 1. Synthesis of chemical modifiers

[0043] 1. Prepare 100 g of mixed monomer by mixing 70 g of acrylic acid and 30 g of methacrylic acid-β-hydroxyethyl phosphate, and prepare 40 g of ammonium persulfate initiator aqueous solution.

[0044] 2. Add 30g of mixed monomers, 16g of ammonium persulfate initiator aqueous solution, and 160g of deionized water into a 500ml reactor with stirring and reflux condenser, heat to 80°C with a constant temperature water bath, and carry out solution polymerization for 0.5h .

[0045] 3. Slowly add the remaining 70g of mixed monomer and 24g of ammonium persulfate initiator aqueous solution into a 500ml reaction kettle synchronously and slowly for 3 hours while maintaining the material temperature at 80°C to continue the solution polymerization reaction.

[0046] 4. After the aqueous solution of the mixed monomer and ammonium persulfate initiator is added dropwise, add 60 g of o-aminophenol into a 500 ml reaction kettle, and maintain...

Embodiment 2

[0054] Step 1. Synthesis of chemical modifiers

[0055] 1. Mix 90g of acrylic acid and 10g of methacrylic acid-β-hydroxyethyl phosphate to make 100g of mixed monomer, and prepare 40g of sodium persulfate initiator aqueous solution.

[0056] 2. Add 30g of mixed monomer, 16g of sodium persulfate initiator aqueous solution, and 160g of deionized water into a 500ml reactor with stirring and reflux condenser, heat it to 85°C with a constant temperature water bath, and carry out solution polymerization for 0.5h .

[0057] 3. Add the remaining 70g of mixed monomer and 24g of sodium persulfate initiator aqueous solution into a 500ml reaction kettle slowly and dropwise for 4 hours, while maintaining the temperature of the material at 85°C to continue the solution polymerization reaction.

[0058] 4. After the dropwise addition of the mixed monomer and sodium persulfate initiator aqueous solution, add 30 g of m-aminophenol into a 500 ml reaction kettle, and maintain the material temperat...

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Abstract

The invention discloses surface chemical modified mica iron oxide powder and a preparation method thereof. The preparation method comprises the following steps: 1) preparing a mixed monomer of acrylicacid and phosphate vinegar, and preparing an initiator aqueous solution; 2) adding 30cy0 of mixed monomer, 40cy0 of initiator water solution and deionized water into a reaction kettle, and carrying out solution polymerization reaction; 3) synchronously and slowly dropwise adding the rest 70cy0 of mixed monomer and 60% of the initiator water solution into the reaction kettle, maintaining the temperature of the reactant, and continuously carrying out solution polymerization reaction; 4) after dropwise adding the mixed monomer and the initiator water solution, adding aminophenol into the reaction kettle, maintaining the temperature of the reactant, and carrying out a condensation reaction; 5) cooling, filtering and discharging the product to obtain a chemical modifier, 6) adding the chemicalmodifier and mica iron oxide powder into a reaction kettle with stirring at the same time, heating the raw materials to carry out surface modification chemical reaction, and 7) carrying out operations including water washing, filtering dehydration, low-temperature drying, screening and the like on the slurry to obtain the surface chemical modified mica iron oxide powder.

Description

technical field [0001] The invention belongs to the technical field of mica iron oxide deep processing, and specifically relates to a surface chemically modified mica iron oxide powder and a preparation method thereof. The preparation method is completed through a series of processes such as polymerization reaction, condensation reaction, and surface modification chemical reaction. The main application of the product is Used in water-based industrial anti-corrosion coatings and anti-radiation coatings. Background technique [0002] Mica iron oxide has a lamellar structure. Its powder is used as an anti-rust filler in anti-corrosion coatings. It has a shielding effect. Through the overlapping of thin flake particles, the diffusion channel of water and corrosive media is extended and blocked. However, due to the inertness of the surface of micaceous iron oxide and the large specific gravity, its compatibility with the resin in the coating is poor, and it settles quickly, which...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/08C08K9/08C08K3/22C08F220/06C08F230/02C08F8/32C09C1/24C09C3/10
CPCC01P2006/22C08F8/32C08F220/06C08K9/08C08K2003/2272C09C1/24C09C3/10C09D5/084C08F230/02
Inventor 贾进盈郭国伟胡永庆许家阔侯素玲岳航宇
Owner 河南青山环保科技有限公司
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