CN103937310A - Anticorrosive coating and preparation method thereof - Google Patents

Abstract

The invention relates to an anticorrosive coating, which is prepared from the following raw materials by weight part: 33-36 of phenolic epoxy resin, 16-20 of acrylic resin, 2-4 of ethyl salicylate, 1-2 of sodium metabisulfite, 2-3 of fumed silica, 0.1-0.2 of graphite fluoride, 1-2 of magnesium trisilicate, 5-7 of triethylene tetramine, 5-7 of m-phenylenediamine, 2-3 of Carbomer, 7-10 of propylene carbonate, 17-21 of glass flakes, 8-10 of tetrahydrofuran, 5-8 of ethyl acetate, and 4-6 of an adhesion assistant. Combined use of the phenolic epoxy resin and acrylic resin endows the coating provided by the invention with excellent adhesion strength, good dielectric properties, small varying set shrinkage, good product size stability, high hardness, good flexibility, and stability in alkali and most solvents. The use of the fumed silica and glass flakes increases the anticorrosion, gas blocking, water blocking and other performance of the coating, and prolongs the service life of the coating. The coating is applicable to automobile, household appliances, building and other fields.

Description

A kind of protective system and preparation method thereof

Technical field

The invention belongs to paint field, relate in particular to a kind of protective system and preparation method thereof.

Background technology

The use field of coating is a lot of now, owing to being often exposed among atmosphere, be subject to the erosion of oxygen, moisture etc., easily cause the phenomenons such as corrosion of metal, foxy, cement weathering, along with the raising of people's living standard, requirement to coating each side all increases, especially the requirement of the aspects such as performance such as the hardness to coating, wear resistance, fullness ratio, shock-resistance, ageing resistance, anticorrosion, waterproof, grease proofing, chemicals-resistant, fast light, heatproof is more and more higher, therefore needs the more progressive coating of research to meet people's needs.

Summary of the invention

The object of the present invention is to provide a kind of protective system and preparation method thereof, this coating has excellent bonding strength, and dielectric properties are good, and set shrinking percentage is little, product size good stability, and hardness is high, and snappiness is better, to alkali and most of solvent-stable; Anticorrosion, choke, the performance such as block water are good.

Technical scheme of the present invention is as follows:

A kind of protective system, is characterized in that being made up of the raw material of following weight part: novolac epoxy 33-36, acrylic resin 16-20, salicylic ether 2-4, Sodium Pyrosulfite 1-2, gas-phase silica 2-3, fluorographite 0.1-0.2, oil cleaning powder 1-2, triethylene tetramine 5-7, mphenylenediamine 5-7, carbomer 2-3, propylene carbonate 7-10, glass flake 17-21, tetrahydrofuran (THF) 8-10, ethyl acetate 5-8, adhere to auxiliary agent 4-6;

The described auxiliary agent that adheres to is made up of the raw material of following weight part: isobornyl acrylate 5-7, Viscoat 295 5-7, lauryl acrylate 4-7, chloroprene rubber 6-8, polyester glycol 7-9, polyphenylene oxide 2-3, aluminium hydroxide 0.1-0.2, alcohol ester 12 film coalescence aid 5-7, titanate coupling agent TMC-TTS0.6-1, calcium naphthenate 1-2, ethylene dichloride 8-13, methylethylketone 8-11, isocyanic ester 2-3, ethyl acetate 5-8, toxilic acid 1-2, urethane acrylate 4-5; Making method is: methylethylketone, ethylene dichloride, ethyl acetate are mixed, under 4000-6000 rev/min, add Viscoat 295, chloroprene rubber, after dissolving, add again isobornyl acrylate, lauryl acrylate, polyester glycol, stir 40-60 minute, add other remaining components, be heated to 80-90 DEG C, stirring reaction 40-60 minute, to obtain final product.

The preparation method of described protective system, is characterized in that comprising the following steps:

(1) prepare A component: propylene carbonate, tetrahydrofuran (THF), ethyl acetate are mixed, under 4000-6000 rev/min of stirring, add fluorographite, oil cleaning powder, stir 10-15 minute, add again novolac epoxy, acrylic resin, stir 1-2 hour, ultrasonic dispersion 6-9 minute, makes A component;

(2) prepare B component: in airtight agitator, carbomer, triethylene tetramine, mphenylenediamine are mixed, under 4000-6000 rev/min of stirring, add gas-phase silica, stir 20-30 minute, make B component;

(3) other remaining components are mixed, add A component and B component, stir 30-40 minute, to obtain final product.

Beneficial effect of the present invention

Coating of the present invention has used novolac epoxy and acrylic resin collocation to use, and makes coating have excellent bonding strength, and dielectric properties are good, set shrinking percentage is little, product size good stability, and hardness is high, snappiness is better, to alkali and most of solvent-stable; By using gas-phase silica and glass flake, increase anticorrosion, the choke of coating, the performance such as block water, extend the life-span of coating.This coating is applicable to the fields such as automobile, household electrical appliances, building.

Embodiment

A kind of protective system, by following weight part (kilogram) raw material make: novolac epoxy 34, acrylic resin 17, salicylic ether 3, Sodium Pyrosulfite 1.5, gas-phase silica 2.5, fluorographite 0.1, oil cleaning powder 1.5, triethylene tetramine 6, mphenylenediamine 6, carbomer 2.6, propylene carbonate 8, glass flake 19, tetrahydrofuran (THF) 9, ethyl acetate 7, adhere to auxiliary agent 5;

Described adhere to auxiliary agent by following weight part (kilogram) raw material make: isobornyl acrylate 6, Viscoat 295 6, lauryl acrylate 6, chloroprene rubber 7, polyester glycol 8, polyphenylene oxide 2.5, aluminium hydroxide 0.2, alcohol ester 12 film coalescence aid 6, titanate coupling agent TMC-TTS0.8, calcium naphthenate 1.5, ethylene dichloride 11, methylethylketone 9, isocyanic ester 2.5, ethyl acetate 6, toxilic acid 1.5, urethane acrylate 4.5; Making method is: methylethylketone, ethylene dichloride, ethyl acetate are mixed, under 5000 revs/min, add Viscoat 295, chloroprene rubber, after dissolving, add again isobornyl acrylate, lauryl acrylate, polyester glycol, stir 50 minutes, add other remaining components, be heated to 85 DEG C, stirring reaction 50 minutes, to obtain final product.

The preparation method of described protective system, comprises the following steps:

(1) prepare A component: propylene carbonate, tetrahydrofuran (THF), ethyl acetate are mixed, under 5000 revs/min of stirrings, add fluorographite, oil cleaning powder, stir 13 minutes, add again novolac epoxy, acrylic resin, stir 1.5 hours, ultrasonic dispersion 7 minutes, makes A component;

(2) prepare B component: in airtight agitator, carbomer, triethylene tetramine, mphenylenediamine are mixed, under 5000 revs/min of stirrings, add gas-phase silica, stir 25 minutes, make B component;

(3) other remaining components are mixed, add A component and B component, stir 35 minutes, to obtain final product.

This coating artificial ageing resistance 3400 hours, coating thicknesses of layers under the prerequisite that keeps low-luster and high-wearing feature reaches more than 35 microns, and sticking power is 1 grade, resistance to impact shock >=50kgcm, snappiness is 1mm.

Claims (2)

1. a protective system, is characterized in that being made up of the raw material of following weight part: novolac epoxy 33-36, acrylic resin 16-20, salicylic ether 2-4, Sodium Pyrosulfite 1-2, gas-phase silica 2-3, fluorographite 0.1-0.2, oil cleaning powder 1-2, triethylene tetramine 5-7, mphenylenediamine 5-7, carbomer 2-3, propylene carbonate 7-10, glass flake 17-21, tetrahydrofuran (THF) 8-10, ethyl acetate 5-8, adhere to auxiliary agent 4-6;

The described auxiliary agent that adheres to is made up of the raw material of following weight part: isobornyl acrylate 5-7, Viscoat 295 5-7, lauryl acrylate 4-7, chloroprene rubber 6-8, polyester glycol 7-9, polyphenylene oxide 2-3, aluminium hydroxide 0.1-0.2, alcohol ester 12 film coalescence aid 5-7, titanate coupling agent TMC-TTS0.6-1, calcium naphthenate 1-2, ethylene dichloride 8-13, methylethylketone 8-11, isocyanic ester 2-3, ethyl acetate 5-8, toxilic acid 1-2, urethane acrylate 4-5; Making method is: methylethylketone, ethylene dichloride, ethyl acetate are mixed, under 4000-6000 rev/min, add Viscoat 295, chloroprene rubber, after dissolving, add again isobornyl acrylate, lauryl acrylate, polyester glycol, stir 40-60 minute, add other remaining components, be heated to 80-90 DEG C, stirring reaction 40-60 minute, to obtain final product.

2. the preparation method of protective system according to claim 1, is characterized in that comprising the following steps:

(1) prepare A component: propylene carbonate, tetrahydrofuran (THF), ethyl acetate are mixed, under 4000-6000 rev/min of stirring, add fluorographite, oil cleaning powder, stir 10-15 minute, add again novolac epoxy, acrylic resin, stir 1-2 hour, ultrasonic dispersion 6-9 minute, makes A component;

(2) prepare B component: in airtight agitator, carbomer, triethylene tetramine, mphenylenediamine are mixed, under 4000-6000 rev/min of stirring, add gas-phase silica, stir 20-30 minute, make B component;

(3) other remaining components are mixed, add A component and B component, stir 30-40 minute, to obtain final product.