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Nanomaterial compound unsaturated polyester antirust paint and preparation method thereof

A nano-material, unsaturated technology, applied in polyester coatings, anti-corrosion coatings, coatings, etc., can solve the problems of high surface free energy, easy aggregation of nanoparticles, weak bonding, etc., to achieve excellent comprehensive performance of coating films, preparation The effect of simple process and convenient operation

Active Publication Date: 2017-09-05
广东富毅电气绝缘材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the introduction of nanoparticles improves the mechanical properties of the coating and the adhesion to the substrate to a certain extent, due to the large specific surface area and high surface free energy of the inorganic nanofillers, the nanoparticles are easy to agglomerate, and the gap between the inorganic nanofillers and the organic matrix The bonding effect of the coating is weak, which leads to the weakening of the barrier effect of the coating on oxygen, water, etc., and the deterioration of the stability of the corrosion resistance

Method used

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  • Nanomaterial compound unsaturated polyester antirust paint and preparation method thereof

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Embodiment 1

[0038] This embodiment discloses a preparation process of a nanomaterial composite unsaturated polyester antirust paint, which has the following steps in turn:

[0039] (1) Preparation of modified montmorillonite: in parts by mass, add 1 part of nano-montmorillonite (average particle size 50-80 nm) to 100 parts of deionized water, add 1 part of dodecyl after swelling for 24 hours Trimethylammonium bromide, sonicated for 3 hours, centrifuged and dried under 0.05MPa vacuum for 24 hours to obtain modified montmorillonite;

[0040](2) Synthesis of nanomaterial composite polyester resin: in parts by mass, add 28.5 parts of isophthalic acid, 12 parts of polyether glycol, 25 parts of ethylene glycol, and 3 parts of methacrylic acid in a four-necked flask and 0.2 parts of dibutyltin dilaurate, heated to 180°C in an oil bath, and after stirring for 2.5 hours at a stirring rate of 600r / min, add 1.5 parts of the modified montmorillonite prepared in step (1), and heat up to 210°C , and k...

Embodiment 2

[0043] This embodiment discloses a preparation process of a nanomaterial composite unsaturated polyester antirust paint, which has the following steps in turn:

[0044] (1) Preparation of modified montmorillonite: in parts by mass, add 1 part of nano-montmorillonite (average particle size 50-80 nm) to 100 parts of deionized water, add 1.5 parts of dodecyl after swelling for 24 hours Trimethylammonium bromide, sonicated for 3 hours, centrifuged and dried under 0.05MPa vacuum for 24 hours to obtain modified montmorillonite;

[0045] (2) Synthesis of nanomaterial composite polyester resin: in parts by mass, add 30 parts of isophthalic acid, 12 parts of polyether glycol, 24 parts of ethylene glycol, 5 parts of methacrylic acid in a four-necked flask and 0.2 parts of dibutyltin dilaurate, heated to 180°C in an oil bath, kept stirring at a stirring rate of 800r / min for 2.5h, then added 2 parts of modified montmorillonite, raised the temperature to 210°C, and stirred at 1200r / min Ke...

Embodiment 3

[0048] This embodiment discloses a preparation process of a nanomaterial composite unsaturated polyester antirust paint, which has the following steps in turn:

[0049] (1) Preparation of modified montmorillonite: in parts by mass, add 1 part of nano-montmorillonite (average particle size 50-80 nm) to 100 parts of deionized water, add 1.5 parts of dodecyl after swelling for 24 hours Trimethylammonium bromide, sonicated for 3 hours, centrifuged and dried under 0.05MPa vacuum for 24 hours to obtain modified montmorillonite;

[0050] (2) Synthesis of nanomaterial composite polyester resin: in parts by mass, add 32 parts of isophthalic acid, 12 parts of polyether glycol, 24 parts of ethylene glycol, and 3 parts of methacrylic acid in a four-necked flask and 0.3 parts of dibutyltin dilaurate, heated to 180°C in an oil bath, kept stirring at a stirring rate of 900r / min for 2.5h, then added 2.5 parts of modified montmorillonite, raised the temperature to 210°C, and stirred at 1200r / m...

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Abstract

The invention discloses nanomaterial compound unsaturated polyester antirust paint and a preparation method thereof. The antirust paint is prepared from nanomaterial compound unsaturated polyester resin, deionized water, a stabilizer and amino resin. The preparation method comprises the following steps: (1) preparing modified montmorillonite by using nano-montmorillonite, deionized water and an intercalation agent; (2) synthesizing the nanomaterial compound unsaturated polyester resin from isophthalic acid, polyether diol, glycol, methacrylic acid, styrene and modified montmorillonite in the presence of dibutyltin dilaurate serving as a catalyst; and (3) adding the nanomaterial compound unsaturated polyester resin into the amino resin, uniformly mixing, adding deionized water and the stabilizer, and uniformly stirring, so as to obtain the nanomaterial compound unsaturated polyester antirust paint. The preparation method has the beneficial effects that a process is simple, environment-friendly and low in cost, the prepared nanomaterial compound unsaturated polyester antirust paint is strong in adhesive force, good in heat resistance and weather resistance and high in corrosion resistance.

Description

technical field [0001] The invention relates to the technical field of anti-rust materials, in particular to a nano-material composite unsaturated polyester anti-rust paint and a preparation method thereof. Background technique [0002] According to statistics, the annual loss caused by steel corrosion and rust in the world accounts for about 1 / 3 of the steel output in that year. In my country, the economic loss caused by metal corrosion accounts for about 4% of the gross national product. Therefore, it is increasingly important to develop excellent metal corrosion protection methods, and the most economical and effective method to prevent metal corrosion is the paint protection method. At present, the most commonly used antirust coatings are polyethylene-based, epoxy resin-based, polyurethane-based and other coatings, but the existing antirust coatings have problems such as poor heat resistance and weather resistance, poor adhesion, and short anticorrosion time. At the sam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/06C09D5/08C09D7/12
CPCC08K2201/011C08L2201/08C08L2205/03C09D5/08C09D167/06C08L61/20C08L71/02C08K9/04C08K3/346
Inventor 卢惠全
Owner 广东富毅电气绝缘材料有限公司
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