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A kind of solvent-free nano epoxy anti-corrosion coating and preparation method thereof

A technology of anti-corrosion coatings and nano-rings, applied in anti-corrosion coatings, epoxy resin coatings, carboxyl rubber coatings, etc., can solve the problems of difficult dispersion of coatings, increase coating toughness, poor dispersion stability, etc., achieve good metal adhesion, improve coating Effects of layer life and excellent corrosion resistance

Inactive Publication Date: 2015-12-02
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aiming at the shortcoming of unmodified epoxy resin being brittle and poor in impact resistance, the present invention utilizes carboxy-terminated nitrile butadiene liquid rubber modified epoxy resin as the main film former; secondly, the reactive diluent used in the present invention has an epoxy group, Not only can it participate in the curing reaction of epoxy resin, but also play a role in reducing the viscosity of the coating and increasing the toughness of the coating; once again to solve the problem of nano-TiO 2 Due to the volume effect and surface effect, the coating is difficult to disperse, the dispersion stability is poor, and the secondary agglomeration is easy to occur. The nano-titanium dioxide dispersion liquid prepared by the present invention makes the nano-particles achieve a more ideal dispersion effect, and then it is equipped with related auxiliary materials. Anticorrosive coatings for crude oil storage tanks

Method used

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  • A kind of solvent-free nano epoxy anti-corrosion coating and preparation method thereof
  • A kind of solvent-free nano epoxy anti-corrosion coating and preparation method thereof
  • A kind of solvent-free nano epoxy anti-corrosion coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Prepare nano-titanium dioxide dispersion liquid, the raw material parts used are as follows:

[0025] 2 grams of nano-titanium dioxide;

[0026] Coupling agent KH-5503 grams;

[0027] 10 grams of isopropanol;

[0028] Preparation process: weigh 2g of dried nano-TiO 2 For the powder, prepare it into a suspension with 5g of isopropanol solution, disperse at high speed (800r / min) for 30min, then disperse in an ultrasonic field for 30min, and transfer it into a three-necked flask. At the same time, 3 g of coupling agent KH-550 was mixed with the remaining isopropanol solution, and stirred with a magnetic stirrer (600 r / min) for 15 min at room temperature. Mix the above two solutions, disperse in the ultrasonic field for 30min, and then stir in a constant temperature water bath at 80°C (600r / min) for coupling reaction for 2h to prepare nano-TiO 2 Dispersions.

[0029] (2) Preparation of Component A: The used raw material parts for the preparation of Component A are as...

Embodiment 2

[0039] Prepare a kind of agent-free nano epoxy anticorrosion coating, the steps are as follows:

[0040] (1) Prepare nano-titanium dioxide dispersion liquid, the raw material parts used are as follows:

[0041] 2 grams of nano-titanium dioxide;

[0042] Coupling agent KH-5603 grams;

[0043] 10 grams of ethanol;

[0044] Preparation process: weigh 2g of dried nano-TiO 2 For the powder, use 5g of ethanol solution to prepare it into a suspension, disperse at high speed (780r / min) for 30min, then disperse in an ultrasonic field for 30min, and transfer it into a three-neck flask. At the same time, 3 g of coupling agent KH-560 was mixed with the remaining ethanol solution, and stirred with a magnetic stirrer (580 r / min) for 15 min at room temperature. Mix the above two solutions, disperse in the ultrasonic field for 30min, and then stir in a constant temperature water bath at 80°C (580r / min) for coupling reaction for 2h to prepare nano-TiO 2 Dispersions.

[0045] (2) Preparat...

Embodiment 3

[0054] Prepare a kind of agent-free nano epoxy anticorrosion coating, the steps are as follows:

[0055] (1) Prepare nano-titanium dioxide dispersion liquid, the raw material parts used are as follows:

[0056] 2 grams of nano-titanium dioxide;

[0057] Coupling agent KH-5703 grams;

[0058] 10 grams of ethanol;

[0059] Preparation process: weigh 2g of dried nano-TiO 2 For the powder, use 5g of ethanol solution to prepare it into a suspension, disperse at high speed (760r / min) for 30min, then disperse in an ultrasonic field for 30min, and transfer it into a three-necked flask. At the same time, 3 g of coupling agent KH-570 was mixed with the remaining ethanol solution, and stirred with a magnetic stirrer (500 r / min) for 15 min at room temperature. Mix the above two solutions, disperse in the ultrasonic field for 30min, and then stir in a constant temperature water bath at 80°C (500r / min) for coupling reaction for 2h to prepare nano-TiO 2 Dispersions.

[0060] (2) Prepar...

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Abstract

The invention discloses a solvent-free nanometer epoxy anticorrosive paint and a preparation method thereof. The anticorrosive paint is prepared by uniformly mixing a component A and a component B according to a weight ratio of 2.5-1.5: 1, wherein the component B is a curing agent--the cashew nut shell oil modified Mannich amide epoxy resin curing agent MD 2008, and the component A is prepared by mixing, by mass, a modified epoxy resin, nanometer titanium dioxide dispersion liquid, a reactive diluent, a pigment, a filling material, a wetting dispersant, an adhesion promoter, a defoaming agent and a flatting agent and carrying out uniform stirring at a temperature of 100 to 105 DEG C. The paint provided by the invention can form a compact coating on the surface of a metal to prevent permeation of corrosive mediums like oxygen, water and other ions; the prepared solvent-free nanometer epoxy anticorrosive paint has good anticorrosion performance and coating performance, is applicable to the field of anticorrosion of oil storage tanks and metals like steel, can be cured at normal temperature and accords with requirements of heavy corrosion protection environments and environmental protection.

Description

technical field [0001] The invention relates to the technical field of anti-corrosion coating materials, in particular to a solvent-free nano-epoxy anti-corrosion coating and a preparation method thereof. The coating can be used for crude oil storage tanks. Background technique [0002] Epoxy resin is a polymer substance containing epoxy groups, which is mainly synthesized by epichlorohydrin and bisphenol A. The molecular structure of epoxy resin determines that epoxy coatings have excellent chemical resistance and strong Adhesion plays an important role in anti-corrosion coatings. At present, the epoxy anti-corrosion coatings used in the market mainly include: solvent-based epoxy coatings, high-solid coatings, water-based epoxy coatings, and solvent-free liquid epoxy resins. However, it is still mainly based on traditional solvent-based anti-corrosion coatings. [0003] The content of volatile organic compounds in organic coatings and the problem of harmful airborne pollu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D113/00C09D5/08C09D7/12
Inventor 严宗诚何小玉陈砺
Owner SOUTH CHINA UNIV OF TECH
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