阅读说明：本技术 热熔型超疏水缓蚀包覆防腐材料及其制备方法 (Hot-melt super-hydrophobic corrosion-inhibition coating anticorrosive material and preparation method thereof ) 是由 王清海 方健君 王秀娟 马胜军 许洋 廉兵杰 徐科 沈雪锋 赵起锋 徐慧 于 2019-09-05 设计创作，主要内容包括：本发明涉及防腐材料技术领域,具体涉及一种热熔型超疏水缓蚀包覆防腐材料及其制备方法。本发明的热熔型超疏水缓蚀包覆防腐材料由以下质量百分数的原料组成：基料树脂30％～50％,疏水树脂5％～15％,缓蚀剂0.5％～2％,缓蚀剂载体10％～30％,增塑剂10％～20％,颜填料浆8％～18％,所述缓蚀剂载体为C16～C20烷烃中的任意一种或几种。本发明的热熔型超疏水缓蚀包覆防腐材料对保护基材的异型结构缝隙处具有较好的防护效果,同时,本发明的热熔型超疏水缓蚀包覆防腐材料还具有优异的耐化学性、抗老化性、断裂伸长率、拉伸强度、超疏水性、包覆性、剥离性以及可重复利用性。(The invention relates to the technical field of anticorrosive materials, in particular to a hot-melt super-hydrophobic corrosion-inhibition coating anticorrosive material and a preparation method thereof. The hot-melt super-hydrophobic corrosion inhibition coating anticorrosive material comprises the following raw materials in percentage by mass: 30-50% of base resin, 5-15% of hydrophobic resin, 0.5-2% of corrosion inhibitor, 10-30% of corrosion inhibitor carrier, 10-20% of plasticizer and 8-18% of pigment and filler slurry, wherein the corrosion inhibitor carrier is any one or more of C16-C20 alkanes. The hot-melt type super-hydrophobic corrosion inhibition coating anticorrosive material has a good protection effect on the special-shaped structure gap of the protective substrate, and meanwhile, the hot-melt type super-hydrophobic corrosion inhibition coating anticorrosive material also has excellent chemical resistance, ageing resistance, elongation at break, tensile strength, super-hydrophobicity, coating property, stripping property and reusability.)

1. The hot-melt super-hydrophobic corrosion-inhibition coating anticorrosive material is characterized by comprising the following raw materials in percentage by mass: 30-50% of base resin, 5-15% of hydrophobic resin, 0.5-2% of corrosion inhibitor, 10-30% of corrosion inhibitor carrier, 10-20% of plasticizer and 8-18% of pigment and filler slurry, wherein the corrosion inhibitor carrier is any one or more of C16-C20 alkanes.

2. The hot-melt type super-hydrophobic corrosion-inhibition coating anticorrosive material according to claim 1, wherein the base resin is a mixture of cellulose acetate butyrate, petroleum resin and modified resin, and the modified resin is any one or more of acrylic acid modified epoxy resin, polyurethane modified epoxy resin and organic silicon modified epoxy resin.

3. The hot-melt type super-hydrophobic corrosion-inhibition coating anticorrosive material according to claim 2, wherein the mass ratio of the cellulose acetate butyrate, the petroleum resin and the modified resin is 1.9-3.7: 1: 0.1-0.3, and the cellulose acetate butyrate comprises the following groups in percentage by mass: 1-8% of acetyl and 45-55% of butyryl, wherein the petroleum resin is any one or more of C9 petroleum resin, hydrogenated C9 petroleum resin, C5 petroleum resin and hydrogenated C5 petroleum resin.

4. The hot-melt type superhydrophobic corrosion-inhibition coating anticorrosive material according to claim 1, wherein the hydrophobic resin is any one of polyether-modified methyl siloxane resin, polyether-modified dimethyl siloxane resin, polyether-modified ethyl siloxane resin, hydroxyl-modified methyl siloxane resin, hydroxyl-modified dimethyl siloxane resin and hydroxyl-modified ethyl siloxane resin.

5. The hot-melt super-hydrophobic corrosion-inhibition coating anticorrosive material according to claim 1, wherein the corrosion inhibitor is obtained by reacting fatty acid, organic solvent and polyethylene polyamine, the fatty acid is any one or more of lauric acid, myristic acid, capric acid, palmitic acid and oleic acid, the organic solvent is toluene or xylene, and the polyethylene polyamine is any one or more of diethylenetriamine, triethylenetetramine and tetraethylenepentamine.

6. The hot-melt type super-hydrophobic corrosion-inhibition coating anticorrosive material according to claim 5, wherein the corrosion inhibitor is prepared by a preparation method comprising the following steps: uniformly mixing the fatty acid and the organic solvent, dropwise adding the polyethylene polyamine, heating, starting nitrogen protection, heating to 160-180 ℃, reacting for 2-4 hours, heating to 200-230 ℃, reacting for 2-4 hours, and distilling the organic solvent and water under reduced pressure to obtain the corrosion inhibitor, wherein the mass ratio of the fatty acid to the polyethylene polyamine to the organic solvent is 25-35: 25-50: 20-50.

7. The hot-melt type super-hydrophobic corrosion-inhibition coating anticorrosive material according to claim 1, wherein the plasticizer is any one or more of tricresyl phosphate, triethyl citrate, trioctyl citrate, diisooctyl adipate and acetyl tri-n-butyl citrate.

8. The hot-melt type super-hydrophobic corrosion-inhibition coating anticorrosive material according to claim 1, wherein the pigment and filler slurry consists of the following components in percentage by mass: 15-30% of epoxy resin, 30-40% of epoxidized soybean oil and 30-45% of a mixture of pigment and filler.

9. The hot-melt type super-hydrophobic corrosion-inhibition coating anticorrosive material according to claim 8, wherein the epoxy resin is one or more of E-44 epoxy resin, E-51 epoxy resin and F-51 epoxy resin.

10. The preparation method of the hot-melt type super-hydrophobic corrosion-inhibition coating anticorrosive material as claimed in claim 1, characterized by comprising the following steps:

adding the corrosion inhibitor, the corrosion inhibitor carrier and the plasticizer into a reaction kettle, stirring and heating, adding the base resin and the hydrophobic resin, continuing stirring and heating, keeping the temperature and stirring for a period of time, adding the pigment and filler slurry, and continuing stirring to obtain the product.

Technical Field

The invention relates to the technical field of anticorrosive materials, in particular to a hot-melt super-hydrophobic corrosion-inhibition coating anticorrosive material and a preparation method thereof.

Background

In the process of contacting with surrounding media, the base materials can be damaged due to the action of oxygen, water or other impurities, the anticorrosive materials can form a film which is coated on the surface of the protective base materials to protect the base materials from being corroded by the outside, steel structure joints, welding seams, flange structures, bolts and other positions of industrial and military equipment are corrosion-prone points, and the main protection measure at present is to coat protective materials on the surface of the base materials or coat viscoelastic bodies to isolate corrosive media for protection.

However, the base material coated with the protective material in the prior art needs to be removed by an organic solvent during disassembly, which is not beneficial to disassembly and maintenance of the base material and pollutes the environment; the base material is easy to collide and damage in the construction process, so that gaps existing on the base material are easy to be corroded by corrosive media, and the protection effect is not ideal; and the protective material is easy to age, pulverize and crack after a long time, and rainwater, dust and other corrosive media are easy to accumulate on the surface or the cracking position of the protective material, so that the protective material is not attractive and has potential corrosion risk. When the viscoelastic body is coated, the surface of the steel structure needs to be uniformly heated to 30-40 ℃, so that construction is inconvenient; air is easily brought in during the use of the viscoelastic body, and a new viscoelastic body needs to be coated again after disassembly and maintenance, so that the protection cost is increased; meanwhile, the existing protective material cannot effectively protect the corrosion generated in the special-shaped structure gap of the base material. Therefore, it is necessary to develop an anticorrosive material with waterproof and dustproof surfaces, and excellent anticorrosive effect on the gaps of the special-shaped structure of the substrate, and easy peeling.

Disclosure of Invention

The invention aims to provide a hot-melt super-hydrophobic corrosion-inhibition coating anticorrosive material which has excellent anticorrosive performance.

The second purpose of the invention is to provide a preparation method of the hot-melt type super-hydrophobic corrosion-inhibition coating anticorrosive material.

In order to achieve the purpose, the technical scheme of the invention is as follows:

the hot-melt type super-hydrophobic corrosion inhibition coating anticorrosive material is prepared from the following raw materials in percentage by mass: 30-50% of base resin, 5-15% of hydrophobic resin, 0.5-2% of corrosion inhibitor, 10-30% of corrosion inhibitor carrier, 10-20% of plasticizer and 8-18% of pigment and filler slurry, wherein the corrosion inhibitor carrier is any one or more of C16-C20 alkanes.

The mass percentage is the percentage of the mass of each raw material in the total raw material.

The base resin is a mixture of cellulose acetate butyrate, petroleum resin and modified resin, and the modified resin is any one or more of acrylic acid modified epoxy resin, polyurethane modified epoxy resin and organic silicon modified epoxy resin.

The mass ratio of the cellulose acetate butyrate, the petroleum resin and the modified resin is 1.9-3.7: 1: 0.1-0.3, and the cellulose acetate butyrate comprises the following groups in percentage by mass: 1-8% of acetyl and 45-55% of butyryl, wherein the petroleum resin is any one or more of C9 petroleum resin, hydrogenated C9 petroleum resin, C5 petroleum resin and hydrogenated C5 petroleum resin.

The hydrophobic resin is any one of polyether modified methyl siloxane resin, polyether modified dimethyl siloxane resin, polyether modified ethyl siloxane resin, hydroxyl modified methyl siloxane resin, hydroxyl modified dimethyl siloxane resin and hydroxyl modified ethyl siloxane resin.

The corrosion inhibitor is obtained by reacting fatty acid, an organic solvent and polyethylene polyamine, wherein the fatty acid is any one or more of lauric acid, myristic acid, capric acid, palmitic acid and oleic acid, the organic solvent is toluene or xylene, and the polyethylene polyamine is any one or more of diethylenetriamine, triethylenetetramine and tetraethylenepentamine.

The corrosion inhibitor is prepared by a preparation method comprising the following steps: uniformly mixing the fatty acid and the organic solvent, dropwise adding the polyethylene polyamine, heating, starting nitrogen protection, heating to 160-180 ℃, reacting for 2-4 hours, heating to 200-230 ℃, reacting for 2-4 hours, and distilling the organic solvent and water under reduced pressure to obtain the corrosion inhibitor, wherein the mass ratio of the fatty acid to the polyethylene polyamine to the organic solvent is 25-35: 25-50: 20-50.

The plasticizer is any one or more of tricresyl phosphate, triethyl citrate, trioctyl citrate, diisooctyl adipate and acetyl tri-n-butyl citrate.

The pigment and filler slurry comprises the following components in percentage by mass: 15-30% of epoxy resin, 30-40% of epoxidized soybean oil and 30-45% of a mixture of pigment and filler.

The epoxy resin is one or more of E-44 epoxy resin, E-51 epoxy resin and F-51 epoxy resin.

The preparation method of the hot-melt type super-hydrophobic corrosion inhibition coating anticorrosive material comprises the following steps:

adding the corrosion inhibitor, the corrosion inhibitor carrier and the plasticizer into a reaction kettle, stirring and heating, adding the base resin and the hydrophobic resin, continuing stirring and heating, keeping the temperature and stirring for a period of time, adding the pigment and filler slurry, and continuing stirring to obtain the product.

The hot-melt super-hydrophobic corrosion inhibition coating anticorrosive material has the beneficial effects that:

the hot-melt super-hydrophobic corrosion inhibition coating anticorrosive material provided by the invention is characterized in that the added corrosion inhibitor carrier is a C16-C20 alkane mixture, and because fatty acid groups exist in the corrosion inhibitor, the corrosion inhibitor can be completely dissolved in the corrosion inhibitor carrier; after the anticorrosive material is coated on the surface of a protective base material and cured, the corrosion inhibitor carrier can continuously seep outwards, and meanwhile, the corrosion inhibitor carrier carries the corrosion inhibitor to seep to the surface of the protective base material together to protect the protective base material; because the corrosion inhibitor carrier is liquid, the corrosion inhibitor carrier can carry the corrosion inhibitor to completely permeate into the special-shaped structure gap of the protective substrate, even if the corrosion occurs in the protective substrate or the gap of the protective substrate, the corrosion can be inhibited due to the existence of the corrosion inhibitor, so that the substrate is effectively protected.

According to the hot-melt super-hydrophobic corrosion inhibition coated anticorrosive material, the hydrophobic resin is used as a part of a film forming substance, so that the anticorrosive material can form a continuous film with certain strength, the surface energy of the anticorrosive material is reduced, super-hydrophobic and self-cleaning functions are provided for the anticorrosive material, corrosion media such as rainwater, dust, oil stains and the like are reduced to fall on the surface of the anticorrosive material, and more effective protection is provided for protecting a base material.

The cellulose acetate butyrate adopted by the invention is a high-molecular cellulose organic acid ester, the molecule contains three groups of hydroxyl, acetyl and butyryl, the ultraviolet resistance is excellent, the resin strength is high, the petroleum resin is a resin with a lower acid value, and has excellent characteristics of water resistance, chemical resistance and the like.

According to the invention, the low-molecular modified resin is mixed with the high-molecular cellulose acetate butyrate and the high-molecular petroleum resin, so that the gap between the high-molecular cellulose acetate butyrate and the high-molecular petroleum resin is filled up, the toughness and the shielding property of the cellulose acetate butyrate and the petroleum resin are enhanced, and the coating performance is excellent; meanwhile, the corrosion inhibitor carrier carries the corrosion inhibitor to seep out of the surface of the protective base material, so that the adhesive force between a film forming substance in the anticorrosive material and the protective base material is reduced, and the peeling of the anticorrosive material is facilitated; because the selected base resin is the hot-melt resin, and the hydrophobic resin, the corrosion inhibitor carrier, the plasticizer and the pigment and filler slurry adopted in the invention have good thermal stability, the coating made of the anticorrosive material can be repeatedly heated for use, the state of the protective base material coated with the anticorrosive material can be checked at any time, and the anticorrosive material is melted and sprayed on the protective base material again after the checking is finished.

In addition, the hot-melt super-hydrophobic corrosion inhibition coating anticorrosive material is low in manufacturing cost and free of pollution, is in a liquid state during spraying (110-150 ℃), can achieve a comprehensive coating effect by self-leveling when coated on the surface of a protective base material, and is good in stripping property, hot-melt property and reusability after the anticorrosive material coated on the surface of the protective base material is cured.

Detailed Description