阅读说明：本技术 一种快速干燥的环氧厚浆型底漆及其制备工艺 (Quick-drying epoxy thick paste type primer and preparation process thereof ) 是由 江孝林 狄成敏 于 2021-07-13 设计创作，主要内容包括：本发明公开了一种快速干燥的环氧厚浆型底漆及其制备工艺,属于环氧厚浆底漆技术领域,包括A组分和B组分,A组分包括如下质量份数的原料：环氧树脂：24-32份：改性树脂：8-12份；防腐颜料：3-7份；着色颜料：2-5份；金红石钛白粉：3-7份；催干剂：5-9份；硅烷偶联剂：5-7份；防沉剂：2-7份；润湿分散剂：4-6份；活性稀释剂：3-7份；溶剂：14-18份。本发明的快速干燥的环氧厚浆型底漆及其制备工艺,其环氧厚浆型底漆的附着力、冲击性及耐酸/碱/盐性能均比对比例优良,成膜速度快且平整,表干和实干时间均比对比例时间短,使环氧厚浆型底漆可快速干燥,可满足不同情况下的使用需求,其适用范围广。(The invention discloses a quick-drying epoxy thick paste type primer and a preparation process thereof, belonging to the technical field of epoxy thick paste primers, and comprising a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: epoxy resin: 24-32 parts of: modified resin: 8-12 parts; anticorrosive pigment: 3-7 parts; coloring pigment: 2-5 parts; rutile titanium dioxide: 3-7 parts; a drier: 5-9 parts of a solvent; silane coupling agent: 5-7 parts; anti-settling agent: 2-7 parts; wetting and dispersing agent: 4-6 parts; active diluent: 3-7 parts; solvent: 14-18 parts. According to the fast-drying epoxy thick paste primer and the preparation process thereof, the adhesive force, the impact property and the acid/alkali/salt resistance of the epoxy thick paste primer are all superior in comparison ratio, the film forming speed is fast and smooth, the surface drying time and the actual drying time are both shorter than the comparison ratio time, so that the epoxy thick paste primer can be fast dried, the use requirements under different conditions can be met, and the application range is wide.)

1. The quick-drying epoxy thick paste type primer is characterized by comprising a component A and a component B, wherein the component A comprises the following raw materials in parts by mass:

epoxy resin: 24-32 parts of: modified resin: 8-12 parts; anticorrosive pigment: 3-7 parts; coloring pigment: 2-5 parts; rutile titanium dioxide: 3-7 parts; a drier: 5-9 parts of a solvent; silane coupling agent: 5-7 parts; anti-settling agent: 2-7 parts; wetting and dispersing agent: 4-6 parts; active diluent: 3-7 parts; solvent: 14-18 parts;

the component B comprises the following raw materials in parts by weight: curing agent: 3-7 parts; accelerator (b): 2-4 parts;

the mass ratio of the component A to the component B is 4; 1.

2. the fast-drying epoxy mastic primer according to claim 1, comprising a component A and a component B, wherein the component A comprises the following raw materials in parts by weight:

epoxy resin: 24 parts of: modified resin: 12 parts of (1); anticorrosive pigment: 3 parts of a mixture; coloring pigment: 5 parts of a mixture; rutile titanium dioxide: 3 parts of a mixture; a drier: 9 parts of (1); silane coupling agent: 5 parts of a mixture; anti-settling agent: 7 parts; wetting and dispersing agent: 4 parts of a mixture; active diluent: 7 parts; solvent: 14 parts of (1);

the component B comprises the following raw materials in parts by weight: curing agent: 3 parts of a mixture; accelerator (b): 4 parts of a mixture;

the mass ratio of the component A to the component B is 4; 1.

3. the fast-drying epoxy mastic primer according to claim 1, comprising a component A and a component B, wherein the component A comprises the following raw materials in parts by weight:

epoxy resin: 32 parts of: modified resin: 8 parts of a mixture; anticorrosive pigment: 7 parts; coloring pigment: 2 parts of (1); rutile titanium dioxide: 7 parts; a drier: 5 parts of a mixture; silane coupling agent: 7 parts; anti-settling agent: 2 parts of (1); wetting and dispersing agent: 6 parts of (1); active diluent: 3 parts of a mixture; solvent: 18 parts of a mixture;

the component B comprises the following raw materials in parts by weight: curing agent: 7 parts; accelerator (b): 2 parts of (1);

the mass ratio of the component A to the component B is 4; 1.

4. the fast-drying epoxy mastic primer according to claim 1, comprising a component A and a component B, wherein the component A comprises the following raw materials in parts by weight:

epoxy resin: 28 parts of: modified resin: 10 parts of (A); anticorrosive pigment: 5 parts of a mixture; coloring pigment: 4 parts of a mixture; rutile titanium dioxide: 5 parts of a mixture; a drier: 7 parts; silane coupling agent: 6 parts of (1); anti-settling agent: 4 parts of a mixture; wetting and dispersing agent: 5 parts of a mixture; active diluent: 5 parts of a mixture; solvent: 16 parts of a mixture;

the component B comprises the following raw materials in parts by weight: curing agent: 5 parts of a mixture; accelerator (b): 3 parts of a mixture;

the mass ratio of the component A to the component B is 4; 1.

5. the fast-drying epoxy mastic primer according to claim 1, comprising a component A and a component B, wherein the component A comprises the following raw materials in parts by weight:

epoxy resin: 26 parts of: modified resin: 12 parts of (1); anticorrosive pigment: 4 parts of a mixture; coloring pigment: 5 parts of a mixture; rutile titanium dioxide: 4 parts of a mixture; a drier: 8 parts of a mixture; silane coupling agent: 5 parts of a mixture; anti-settling agent: 6 parts of (1); wetting and dispersing agent: 4 parts of a mixture; active diluent: 6 parts of (1); solvent: 15 parts of (1);

the component B comprises the following raw materials in parts by weight: curing agent: 4 parts of a mixture; accelerator (b): 4 parts of a mixture;

the mass ratio of the component A to the component B is 4; 1.

6. the fast-drying epoxy mastic primer according to claim 1, comprising a component A and a component B, wherein the component A comprises the following raw materials in parts by weight:

epoxy resin: 30 parts of: modified resin: 9 parts of (1); anticorrosive pigment: 6 parts of (1); coloring pigment: 2 parts of (1); rutile titanium dioxide: 6 parts of (1); a drier: 6 parts of (1); silane coupling agent: 7 parts; anti-settling agent: 3 parts of a mixture; wetting and dispersing agent: 6 parts of (1); active diluent: 4 parts of a mixture; solvent: 17 parts of (1);

the component B comprises the following raw materials in parts by weight: curing agent: 6 parts of (1); accelerator (b): 3 parts of a mixture;

the mass ratio of the component A to the component B is 4; 1.

7. the fast drying epoxy mastic primer of claim 1 wherein the drier is one or both of an organotin polymer and a metal drier.

8. The fast drying epoxy mastic primer of claim 1 wherein the curing agent is a cashew nut shell oil modified amine curing agent and the accelerator is an adhesion promoter.

9. A process for preparing a flash-dry epoxy mastic primer according to any of claims 1 to 8, characterized in that it comprises the following steps:

s1: putting epoxy resin, modified resin, rutile titanium dioxide, a silane coupling agent, a reactive diluent and a solvent into stirring equipment, adding an anticorrosive pigment, a coloring pigment, an anti-settling agent, a wetting dispersant and a drier while stirring, stirring at a high speed of 1438-;

s2: putting the curing agent and the accelerator into stirring equipment, fully mixing the curing agent and the accelerator, and grinding the mixture to the fineness of 10-30 mu m to obtain a component B;

s3: according to the mass ratio of the component A to the component B being 4; 1, putting the prepared component A and the component B into stirring equipment, wherein the stirring speed is 768-934r/min, and the stirring time is 12-24min, so that the epoxy thick paste type primer is prepared after the components are uniformly mixed.

Technical Field

The invention relates to the technical field of epoxy thick paste primer, in particular to quick-drying epoxy thick paste primer and a preparation process thereof.

Background

The epoxy mastic primer consists of epoxy resin, modified resin, anticorrosive pigment, coloring pigment, assistant, solvent, curing agent, etc. It has the following characteristics: 1. the epoxy thick paste primer has excellent adhesive force, durability, wear resistance and impact resistance; 2. the coating has excellent salt water resistance, oil resistance, alkali resistance and certain degree of acid resistance; 3. the solid content is high, and the coating can be used as a thick film type coating; 4. has outstanding corrosion resistance and is the most ideal heavy antirust coating for the indoor.

When the existing epoxy thick paste primer is used, the surface drying and actual drying time of the epoxy thick paste primer is longer after the epoxy thick paste primer is coated, so that a paint film of the epoxy thick paste primer is not easy to dry quickly, and the use requirements under different conditions can not be met.

Disclosure of Invention

The invention aims to provide a quick-drying epoxy thick paste primer and a preparation process thereof, wherein the adhesive force, the impact property and the acid/alkali/salt resistance of the epoxy thick paste primer are all superior in comparison ratio, the film forming speed is high, the film forming is smooth, and the surface drying time and the actual drying time are both shorter than the comparison ratio time, so that the epoxy thick paste primer can be quickly dried, the use of the epoxy thick paste primer is facilitated, the use requirements under different conditions can be met, the application range is wide, and the problems in the background art are solved.

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

a quick-drying epoxy thick paste type primer comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by weight:

epoxy resin: 24-32 parts of: modified resin: 8-12 parts; anticorrosive pigment: 3-7 parts; coloring pigment: 2-5 parts; rutile titanium dioxide: 3-7 parts; a drier: 5-9 parts of a solvent; silane coupling agent: 5-7 parts; anti-settling agent: 2-7 parts; wetting and dispersing agent: 4-6 parts; active diluent: 3-7 parts; solvent: 14-18 parts;

the component B comprises the following raw materials in parts by weight: curing agent: 3-7 parts; accelerator (b): 2-4 parts;

the mass ratio of the component A to the component B is 4; 1.

further, the composition comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by mass:

epoxy resin: 24 parts of: modified resin: 12 parts of (1); anticorrosive pigment: 3 parts of a mixture; coloring pigment: 5 parts of a mixture; rutile titanium dioxide: 3 parts of a mixture; a drier: 9 parts of (1); silane coupling agent: 5 parts of a mixture; anti-settling agent: 7 parts; wetting and dispersing agent: 4 parts of a mixture; active diluent: 7 parts; solvent: 14 parts of (1);

the component B comprises the following raw materials in parts by weight: curing agent: 3 parts of a mixture; accelerator (b): 4 parts of a mixture;

the mass ratio of the component A to the component B is 4; 1.

further, the composition comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by mass:

epoxy resin: 32 parts of: modified resin: 8 parts of a mixture; anticorrosive pigment: 7 parts; coloring pigment: 2 parts of (1); rutile titanium dioxide: 7 parts; a drier: 5 parts of a mixture; silane coupling agent: 7 parts; anti-settling agent: 2 parts of (1); wetting and dispersing agent: 6 parts of (1); active diluent: 3 parts of a mixture; solvent: 18 parts of a mixture;

the component B comprises the following raw materials in parts by weight: curing agent: 7 parts; accelerator (b): 2 parts of (1);

the mass ratio of the component A to the component B is 4; 1.

further, the composition comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by mass:

epoxy resin: 28 parts of: modified resin: 10 parts of (A); anticorrosive pigment: 5 parts of a mixture; coloring pigment: 4 parts of a mixture; rutile titanium dioxide: 5 parts of a mixture; a drier: 7 parts; silane coupling agent: 6 parts of (1); anti-settling agent: 4 parts of a mixture; wetting and dispersing agent: 5 parts of a mixture; active diluent: 5 parts of a mixture; solvent: 16 parts of a mixture;

the component B comprises the following raw materials in parts by weight: curing agent: 5 parts of a mixture; accelerator (b): 3 parts of a mixture;

the mass ratio of the component A to the component B is 4; 1.

further, the composition comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by mass:

epoxy resin: 26 parts of: modified resin: 12 parts of (1); anticorrosive pigment: 4 parts of a mixture; coloring pigment: 5 parts of a mixture; rutile titanium dioxide: 4 parts of a mixture; a drier: 8 parts of a mixture; silane coupling agent: 5 parts of a mixture; anti-settling agent: 6 parts of (1); wetting and dispersing agent: 4 parts of a mixture; active diluent: 6 parts of (1); solvent: 15 parts of (1);

the component B comprises the following raw materials in parts by weight: curing agent: 4 parts of a mixture; accelerator (b): 4 parts of a mixture;

the mass ratio of the component A to the component B is 4; 1.

further, the composition comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by mass:

epoxy resin: 30 parts of: modified resin: 9 parts of (1); anticorrosive pigment: 6 parts of (1); coloring pigment: 2 parts of (1); rutile titanium dioxide: 6 parts of (1); a drier: 6 parts of (1); silane coupling agent: 7 parts; anti-settling agent: 3 parts of a mixture; wetting and dispersing agent: 6 parts of (1); active diluent: 4 parts of a mixture; solvent: 17 parts of (1);

the component B comprises the following raw materials in parts by weight: curing agent: 6 parts of (1); accelerator (b): 3 parts of a mixture;

the mass ratio of the component A to the component B is 4; 1.

further, the drier is one or two of organic tin polymer and metal drier.

Further, the curing agent is cashew nut shell oil modified amine curing agent, and the promoter is adhesion promoter.

According to another aspect of the present invention, there is provided a process for preparing a fast drying epoxy mastic primer, comprising the steps of:

s1: putting epoxy resin, modified resin, rutile titanium dioxide, a silane coupling agent, a reactive diluent and a solvent into stirring equipment, adding an anticorrosive pigment, a coloring pigment, an anti-settling agent, a wetting dispersant and a drier while stirring, stirring at a high speed of 1438-;

s2: putting the curing agent and the accelerator into stirring equipment, fully mixing the curing agent and the accelerator, and grinding the mixture to the fineness of 10-30 mu m to obtain a component B;

s3: according to the mass ratio of the component A to the component B being 4; 1, putting the prepared component A and the component B into stirring equipment, wherein the stirring speed is 768-934r/min, and the stirring time is 12-24min, so that the epoxy thick paste type primer is prepared after the components are uniformly mixed.

Compared with the prior art, the invention has the beneficial effects that:

according to the epoxy thick paste type primer prepared by the preparation process, the adhesive force, the impact property and the acid/alkali/salt resistance of the epoxy thick paste type primer are excellent in comparison ratio, the film forming speed is high, the film forming is smooth, the surface drying time and the actual drying time are short in comparison ratio time, so that the epoxy thick paste type primer can be quickly dried, the use requirements under different conditions can be met, and the application range is wide.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

A quick-drying epoxy thick paste type primer comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by weight:

epoxy resin: 24 parts of: modified resin: 12 parts of (1); anticorrosive pigment: 3 parts of a mixture; coloring pigment: 5 parts of a mixture; rutile titanium dioxide: 3 parts of a mixture; a drier: 9 parts of (1); silane coupling agent: 5 parts of a mixture; anti-settling agent: 7 parts; wetting and dispersing agent: 4 parts of a mixture; active diluent: 7 parts; solvent: 14 parts of (1);

the component B comprises the following raw materials in parts by weight: curing agent: 3 parts of a mixture; accelerator (b): 4 parts of a mixture;

the mass ratio of the component A to the component B is 4; 1.

the drier is organic tin polymer, the curing agent is cashew nut shell oil modified amine curing agent, and the accelerant is adhesion promoter.

In order to better show the preparation process of the fast-drying epoxy thick paste primer, this embodiment now proposes a preparation method of the fast-drying epoxy thick paste primer, which includes the following steps:

s1: putting epoxy resin, modified resin, rutile titanium dioxide, a silane coupling agent, a reactive diluent and a solvent into stirring equipment, adding an anticorrosive pigment, a coloring pigment, an anti-settling agent, a wetting dispersant and a drier while stirring, stirring at a high speed of 1438-;

s2: putting the curing agent and the accelerator into stirring equipment, fully mixing the curing agent and the accelerator, and grinding the mixture to the fineness of 10-30 mu m to obtain a component B;

s3: according to the mass ratio of the component A to the component B being 4; 1, putting the prepared component A and the component B into stirring equipment, wherein the stirring speed is 768-934r/min, and the stirring time is 12-24min, so that the epoxy thick paste type primer is prepared after the components are uniformly mixed.

Example two

A quick-drying epoxy thick paste type primer comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by weight:

epoxy resin: 32 parts of: modified resin: 8 parts of a mixture; anticorrosive pigment: 7 parts; coloring pigment: 2 parts of (1); rutile titanium dioxide: 7 parts; a drier: 5 parts of a mixture; silane coupling agent: 7 parts; anti-settling agent: 2 parts of (1); wetting and dispersing agent: 6 parts of (1); active diluent: 3 parts of a mixture; solvent: 18 parts of a mixture;

the component B comprises the following raw materials in parts by weight: curing agent: 7 parts; accelerator (b): 2 parts of (1);

the mass ratio of the component A to the component B is 4; 1.

the drier is a metal drier, the curing agent is a cashew nut shell oil modified amine curing agent, and the accelerator is an adhesion promoter.

In order to better show the preparation process of the fast-drying epoxy thick paste primer, this embodiment now proposes a preparation method of the fast-drying epoxy thick paste primer, which includes the following steps:

s1: putting epoxy resin, modified resin, rutile titanium dioxide, a silane coupling agent, a reactive diluent and a solvent into stirring equipment, adding an anticorrosive pigment, a coloring pigment, an anti-settling agent, a wetting dispersant and a drier while stirring, stirring at a high speed of 1438-;

s2: putting the curing agent and the accelerator into stirring equipment, fully mixing the curing agent and the accelerator, and grinding the mixture to the fineness of 10-30 mu m to obtain a component B;

s3: according to the mass ratio of the component A to the component B being 4; 1, putting the prepared component A and the component B into stirring equipment, wherein the stirring speed is 768-934r/min, and the stirring time is 12-24min, so that the epoxy thick paste type primer is prepared after the components are uniformly mixed.

EXAMPLE III

A quick-drying epoxy thick paste type primer comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by weight:

epoxy resin: 28 parts of: modified resin: 10 parts of (A); anticorrosive pigment: 5 parts of a mixture; coloring pigment: 4 parts of a mixture; rutile titanium dioxide: 5 parts of a mixture; a drier: 7 parts; silane coupling agent: 6 parts of (1); anti-settling agent: 4 parts of a mixture; wetting and dispersing agent: 5 parts of a mixture; active diluent: 5 parts of a mixture; solvent: 16 parts of a mixture;

the component B comprises the following raw materials in parts by weight: curing agent: 5 parts of a mixture; accelerator (b): 3 parts of a mixture;

the mass ratio of the component A to the component B is 4; 1.

the drier is a metal drier, the curing agent is a cashew nut shell oil modified amine curing agent, and the accelerator is an adhesion promoter.

In order to better show the preparation process of the fast-drying epoxy thick paste primer, this embodiment now proposes a preparation method of the fast-drying epoxy thick paste primer, which includes the following steps:

s1: putting epoxy resin, modified resin, rutile titanium dioxide, a silane coupling agent, a reactive diluent and a solvent into stirring equipment, adding an anticorrosive pigment, a coloring pigment, an anti-settling agent, a wetting dispersant and a drier while stirring, stirring at a high speed of 1438-;

s2: putting the curing agent and the accelerator into stirring equipment, fully mixing the curing agent and the accelerator, and grinding the mixture to the fineness of 10-30 mu m to obtain a component B;

s3: according to the mass ratio of the component A to the component B being 4; 1, putting the prepared component A and the component B into stirring equipment, wherein the stirring speed is 768-934r/min, and the stirring time is 12-24min, so that the epoxy thick paste type primer is prepared after the components are uniformly mixed.

Example four

A quick-drying epoxy thick paste type primer comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by weight:

epoxy resin: 26 parts of: modified resin: 12 parts of (1); anticorrosive pigment: 4 parts of a mixture; coloring pigment: 5 parts of a mixture; rutile titanium dioxide: 4 parts of a mixture; a drier: 8 parts of a mixture; silane coupling agent: 5 parts of a mixture; anti-settling agent: 6 parts of (1); wetting and dispersing agent: 4 parts of a mixture; active diluent: 6 parts of (1); solvent: 15 parts of (1);

the component B comprises the following raw materials in parts by weight: curing agent: 4 parts of a mixture; accelerator (b): 4 parts of a mixture;

the mass ratio of the component A to the component B is 4; 1.

the drier is organic tin polymer, the curing agent is cashew nut shell oil modified amine curing agent, and the accelerant is adhesion promoter.

In order to better show the preparation process of the fast-drying epoxy thick paste primer, this embodiment now proposes a preparation method of the fast-drying epoxy thick paste primer, which includes the following steps:

s1: putting epoxy resin, modified resin, rutile titanium dioxide, a silane coupling agent, a reactive diluent and a solvent into stirring equipment, adding an anticorrosive pigment, a coloring pigment, an anti-settling agent, a wetting dispersant and a drier while stirring, stirring at a high speed of 1438-;

s2: putting the curing agent and the accelerator into stirring equipment, fully mixing the curing agent and the accelerator, and grinding the mixture to the fineness of 10-30 mu m to obtain a component B;

s3: according to the mass ratio of the component A to the component B being 4; 1, putting the prepared component A and the component B into stirring equipment, wherein the stirring speed is 768-934r/min, and the stirring time is 12-24min, so that the epoxy thick paste type primer is prepared after the components are uniformly mixed.

EXAMPLE five

A quick-drying epoxy thick paste type primer comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by weight:

epoxy resin: 30 parts of: modified resin: 9 parts of (1); anticorrosive pigment: 6 parts of (1); coloring pigment: 2 parts of (1); rutile titanium dioxide: 6 parts of (1); a drier: 6 parts of (1); silane coupling agent: 7 parts; anti-settling agent: 3 parts of a mixture; wetting and dispersing agent: 6 parts of (1); active diluent: 4 parts of a mixture; solvent: 17 parts of (1);

the component B comprises the following raw materials in parts by weight: curing agent: 6 parts of (1); accelerator (b): 3 parts of a mixture;

the mass ratio of the component A to the component B is 4; 1.

the drier is a metal drier, the curing agent is a cashew nut shell oil modified amine curing agent, and the accelerator is an adhesion promoter.

In order to better show the preparation process of the fast-drying epoxy thick paste primer, this embodiment now proposes a preparation method of the fast-drying epoxy thick paste primer, which includes the following steps:

s1: putting epoxy resin, modified resin, rutile titanium dioxide, a silane coupling agent, a reactive diluent and a solvent into stirring equipment, adding an anticorrosive pigment, a coloring pigment, an anti-settling agent, a wetting dispersant and a drier while stirring, stirring at a high speed of 1438-;

s2: putting the curing agent and the accelerator into stirring equipment, fully mixing the curing agent and the accelerator, and grinding the mixture to the fineness of 10-30 mu m to obtain a component B;

s3: according to the mass ratio of the component A to the component B being 4; 1, putting the prepared component A and the component B into stirring equipment, wherein the stirring speed is 768-934r/min, and the stirring time is 12-24min, so that the epoxy thick paste type primer is prepared after the components are uniformly mixed.

The epoxy thick paste type primer prepared by the preparation process is tested for various performances, and the performance test steps are as follows:

1. adhesion test according to GB/T1720-1979

The method comprises the steps of scratching 10X 10 small grids of 1mm X1 mm on the surface of a sample coated with epoxy thick paste type primer by using a sharp blade, wherein each piece of line is deep to the bottom layer of the epoxy thick paste type primer, brushing fragments in a testing area completely by using a hairbrush, firmly adhering the small grid to be tested by using an adhesive tape with the adhesive force of 350g/cm 2-400 g/cm2, wiping the adhesive tape with an eraser with force to increase the contact area and force between the adhesive tape and the tested area, grasping one end of the adhesive tape with a hand, rapidly pulling off adhesive paper in the vertical direction, and carrying out 3 times of same tests at the same position.

2. Impact test according to GB/T1732-1993

The sample coated with epoxy mastic primer was placed on a test apparatus, the painted side was either up or down as specified, the sample was placed flat on the support surface of the base, and the indenter was brought into contact with the upper surface of the sample, the weight was lifted to a height where no damage could be expected, the weight was released to fall on the indenter, the sample was removed from the test apparatus, the impact area coating was examined for cracking, if there was no significant cracking, the procedure was repeated at a higher height, increasing l inches (25mm) at a time, and the same test was performed 3 times at the same location.

3. Acid/base/salt resistance test according to GB/T9274

Placing the sample coated with the epoxy thick paste type primer in a 5% sulfuric acid-resistant solution, soaking for 200 hours, observing the change of a paint film of the sample, and repeating the test for 3 times;

placing the sample coated with the epoxy thick paste type primer in a 5% sodium hydroxide solution, soaking for 200 hours, observing the change of a paint film of the sample, and repeating the test for 3 times;

the sample coated with the epoxy mastic primer was immersed in a 5% sodium chloride-resistant solution for 200 hours, the change in paint film of the sample was observed, and the test was repeated 3 times.

The test conditions are shown in the following table:

	adhesion force	Impact property	Acid/base/salt resistance
				Example one	Level 1	46cm	0.01mm/a
Example two	Level 1	47cm	0.02mm/a
				EXAMPLE III	Level 1	50cm	0.01mm/a
Example four	Level 1	48cm	0.03mm/a
				EXAMPLE five	Level 1	46cm	0.02mm/a
Comparative example	Stage 2	41cm	0.05mm/a

4. The paint film color and appearance were tested according to GB/T1728-1979

And (3) placing the sample coated with the epoxy thick paste type primer at room temperature, observing the drying and surface film forming conditions of the sample, and repeating the test for 3 times.

The test conditions are shown in the following table:

according to the table, the adhesive force, the impact property and the acid/alkali/salt resistance of the epoxy thick paste type primer prepared by the preparation process are excellent in comparison ratio, the film forming speed is high, the film forming is smooth, the surface drying time and the actual drying time are shorter than the comparison ratio time, the epoxy thick paste type primer can be dried quickly, the use requirements under different conditions can be met, and the application range is wide.

In summary, according to the epoxy thick paste primer and the preparation process thereof, the epoxy thick paste primer prepared by the preparation process has the advantages of excellent adhesive force, impact resistance and acid/alkali/salt resistance compared with the ratio, high film forming speed, smooth film forming, short surface drying time and actual drying time compared with the ratio, quick drying of the epoxy thick paste primer, capability of meeting the use requirements under different conditions, and wide application range.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.