阅读说明：本技术 一种水下混凝土结构防护用防碳化涂料及其制备方法 (Carbonization-resistant coating for protecting underwater concrete structure and preparation method thereof ) 是由 冯岭 齐月岭 王强 苏占山 刘旭辉 万俊军 于 2020-05-12 设计创作，主要内容包括：本发明提供一种水下混凝土结构防护用防碳化涂料及其制备方法,涉及涂料加工技术领域,包括填料20-35份；去离子水30-45份；聚苯烯酸酯乳液6-12份；碳化抑制剂7-9份；消泡剂1-3份；功能性助剂30-37份；缓蚀剂0.01-0.1份；流平剂0.1-1份；聚二甲基氧基硅烷PDMS2-6份；无水硫酸钠10-28份,制备步骤如下：制备混合物一；制备混合物二；研磨；分散制得防碳化涂料。本发明增强了涂料的防碳化效果,延长了涂料的使用寿命,采用研磨分散工艺,节约了涂料的制备时间,降低了操作人员的劳动强度,提高了涂料的制备效率,满足了当前企业的生产使用需求,从而提高了经济收益。(The invention provides an anti-carbonization coating for protecting an underwater concrete structure and a preparation method thereof, which relate to the technical field of coating processing and comprise 20-35 parts of a filler; 30-45 parts of deionized water; 6-12 parts of a polybenzoate emulsion; 7-9 parts of a carbonization inhibitor; 1-3 parts of a defoaming agent; 30-37 parts of a functional auxiliary agent; 0.01-0.1 part of corrosion inhibitor; 0.1-1 part of a leveling agent; 2-6 parts of polydimethylsiloxane PDMS; 10-28 parts of anhydrous sodium sulfate, and the preparation steps are as follows: preparing a first mixture; preparing a second mixture; grinding; dispersing to obtain the anti-carbonization coating. The invention enhances the anti-carbonization effect of the coating, prolongs the service life of the coating, adopts the grinding and dispersing process, saves the preparation time of the coating, reduces the labor intensity of operators, improves the preparation efficiency of the coating, meets the production and use requirements of current enterprises and further improves the economic benefit.)

1. An anti-carbonization coating for protecting an underwater concrete structure is characterized by comprising the following components in parts by weight:

2. the anti-carbonization coating material for underwater concrete structure protection as claimed in claim 1, wherein the filler is one or more of corundum, barite powder, kaolin and nano-silica micropowder.

3. The anti-carbonization coating material for underwater concrete structure protection as claimed in claim 1, wherein the carbonization inhibitor is hydrophobic calcium oxide.

4. The anti-carbonization coating material for underwater concrete structure protection as claimed in claim 1, wherein the defoaming agent is a mixture of n-butanol, polyethylene wax, phosphate ester and mineral oil in a weight ratio of 1:1:1 to 7: 1.

5. The anti-carbonization coating material for underwater concrete structure protection as claimed in claim 1, wherein the functional auxiliary agent is polyether modified polysiloxane copolymer L K-600.

6. The anti-carbonization coating material for underwater concrete structure protection as claimed in claim 1, wherein the corrosion inhibitor is any one of aluminum dihydrogen tripolyphosphate, benzotriazole and methylbenzotriazole.

7. The anti-carbonization coating material for underwater concrete structure protection as claimed in claim 1, wherein the leveling agent is polyether-modified polydimethylsiloxane.

8. A preparation method of an anti-carbonization coating for protecting an underwater concrete structure is characterized by comprising the following steps:

(1) weighing deionized water and a filler according to a formula, adding the deionized water and the filler into a material preparation tank, and dispersing at a high speed, wherein the rotating speed of a dispersion disc is 600-;

(2) weighing the poly (acrylic acid ester) emulsion, the flatting agent, the defoaming agent, the polydimethylsiloxane PDMS and the anhydrous sodium sulfate according to the formula, adding the poly (acrylic acid ester) emulsion, the flatting agent, the defoaming agent, the polydimethylsiloxane PDMS and the anhydrous sodium sulfate into a material preparation tank, mixing the poly (acrylic acid ester) emulsion and the anhydrous sodium sulfate with the mixture I obtained in the step (1), wherein the rotating speed of a dispersion disc is 800-1000 revolutions per minute, and the mixing time is 5-8 minutes;

(3) adding the mixture II, the functional auxiliary agent, the corrosion inhibitor and the carbonization inhibitor into a grinding machine for grinding for 1-2 h;

(4) pumping the ground materials into a dispersing device by using a vacuum pump, dispersing at a high speed for 40-60 minutes at the rotating speed of 3900 and 4500 rpm, and uniformly dispersing to obtain the anti-carbonization coating.

9. The method for preparing the anti-carbonization coating material for protecting the underwater concrete structure according to claim 8, wherein the dispersing device in the step (4) is a nano-disperser.

Technical Field

The invention relates to the technical field of coating processing, in particular to an anti-carbonization coating for protecting an underwater concrete structure and a preparation method thereof.

Background

With the development of the social industry, concrete structures are one of the most widely used structures, and concrete carbonization is one of important durability indexes of concrete, wherein carbonization prevention coatings are used for underwater concrete structure protection, and a carbonization prevention coating layer is usually coated on the surface of an underwater concrete structure for protection so as to reduce the carbonization rate of concrete. However, the anti-carbonization coating used at present has the problems of poor coating durability, unsatisfactory anti-carbonization effect and high processing cost, and cannot meet the production and use requirements of current enterprises.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides an anti-carbonization coating for protecting an underwater concrete structure and a preparation method thereof.

In order to achieve the purpose, the invention adopts the following technical scheme:

an anti-carbonization coating for protecting an underwater concrete structure is characterized by comprising the following components in parts by weight:

preferably, the filler is one or a mixture of more of carborundum, barite powder, kaolin and nano-silica micro powder.

Preferably, the carbonation inhibitor is hydrophobic calcium oxide.

Preferably, the defoaming agent is a mixture of n-butanol, polyethylene wax, phosphate and mineral oil in a weight ratio of 1:1:1-7: 1.

Preferably, the functional auxiliary agent is polyether modified polysiloxane copolymer L K-600.

Preferably, the corrosion inhibitor is any one of aluminium dihydrogen tripolyphosphate, benzotriazole and methylbenzotriazole.

Preferably, the leveling agent is polyether modified polydimethylsiloxane.

A preparation method of an anti-carbonization coating for protecting an underwater concrete structure is characterized by comprising the following steps:

(1) weighing deionized water and a filler according to a formula, adding the deionized water and the filler into a material preparation tank, and dispersing at a high speed, wherein the rotating speed of a dispersion disc is 600-;

(2) weighing the poly (acrylic acid ester) emulsion, the flatting agent, the defoaming agent, the polydimethylsiloxane PDMS and the anhydrous sodium sulfate according to the formula, adding the poly (acrylic acid ester) emulsion, the flatting agent, the defoaming agent, the polydimethylsiloxane PDMS and the anhydrous sodium sulfate into a material preparation tank, mixing the poly (acrylic acid ester) emulsion and the anhydrous sodium sulfate with the mixture I obtained in the step (1), wherein the rotating speed of a dispersion disc is 800-1000 revolutions per minute, and the mixing time is 5-8 minutes;

(3) adding the mixture II, the functional auxiliary agent, the corrosion inhibitor and the carbonization inhibitor into a grinding machine for grinding for 1-2 h;

(4) pumping the ground materials into a dispersing device by using a vacuum pump, dispersing at a high speed for 40-60 minutes at the rotating speed of 3900 and 4500 rpm, and uniformly dispersing to obtain the anti-carbonization coating.

Preferably, the dispersing device in the step (4) is a nano dispersing machine.

The invention has the beneficial effects that: according to the anti-carbonization coating for protecting the underwater concrete structure, the functional auxiliary agent, the polydimethylsiloxane PDMS and the carbonization inhibitor are added, so that the anti-carbonization effect of the coating is enhanced, the carbonization rate of the underwater concrete structure covered by the coating is effectively reduced, the durability of the underwater concrete structure is improved, and the service life of the coating is prolonged.

Detailed Description

The invention is further illustrated by the following examples:

an anti-carbonization coating for protecting an underwater concrete structure is characterized by comprising the following components in parts by weight:

preferably, the filler is one or a mixture of more of carborundum, barite powder, kaolin and nano-silica micro powder.

Preferably, the carbonation inhibitor is hydrophobic calcium oxide.

Preferably, the defoaming agent is a mixture of n-butanol, polyethylene wax, phosphate and mineral oil in a weight ratio of 1:1:1-7: 1.

Preferably, the functional auxiliary agent is polyether modified polysiloxane copolymer L K-600.

Preferably, the corrosion inhibitor is any one of aluminium dihydrogen tripolyphosphate, benzotriazole and methylbenzotriazole.

Preferably, the leveling agent is polyether modified polydimethylsiloxane.

A preparation method of an anti-carbonization coating for protecting an underwater concrete structure is characterized by comprising the following steps:

(1) weighing deionized water and a filler according to a formula, adding the deionized water and the filler into a material preparation tank, and dispersing at a high speed, wherein the rotating speed of a dispersion disc is 600-;

(2) weighing the poly (acrylic acid ester) emulsion, the flatting agent, the defoaming agent, the polydimethylsiloxane PDMS and the anhydrous sodium sulfate according to the formula, adding the poly (acrylic acid ester) emulsion, the flatting agent, the defoaming agent, the polydimethylsiloxane PDMS and the anhydrous sodium sulfate into a material preparation tank, mixing the poly (acrylic acid ester) emulsion and the anhydrous sodium sulfate with the mixture I obtained in the step (1), wherein the rotating speed of a dispersion disc is 800-1000 revolutions per minute, and the mixing time is 5-8 minutes;

(3) adding the mixture II, the functional auxiliary agent, the corrosion inhibitor and the carbonization inhibitor into a grinding machine for grinding for 1-2 h;

(4) pumping the ground materials into a dispersing device by using a vacuum pump, dispersing at a high speed for 40-60 minutes at the rotating speed of 3900 and 4500 rpm, and uniformly dispersing to obtain the anti-carbonization coating.

Preferably, the dispersing device in the step (4) is a nano dispersing machine.