1. 环氧稀释剂 Epoxy thinnerForm

DreamThinner 17：环氧稀释剂是配合环氧基础树脂混合使用，可以降低固化体系粘度，增加流动性，延长使用寿命，便于大面积施工；改善了操作性的同时，又不影响固化物的基本性能。 Epoxy diluent is mixed with epoxy base resin to reduce the viscosity of the curing system, increase flowability, extend service life, and facilitate large-scale construction; Improved operability without affecting the basic properties of the cured product.

2.环氧稀释剂 Epoxy thinnerConstruction technology

环氧稀释剂 Epoxy thinnerThe most commonly used, the most basic three methods: rolling coating, brush coating, spraying (including gas spraying and no gas spraying), other more special and scraping coating, electrophoretic coating, immersion coating, powder spraying, thermal spraying, etc., now the three common coating methods are compared, convenient according to the specific situation and effect requirements to choose.

2.1. Brush

Brush painting is the earliest, simplest and most traditional painting method, suitable for painting objects of any shape. Most used in the construction of small area special structure components; except for fast drying speed, poor smoothness, high solid content, can be applied to a variety of coatings.

环氧稀释剂 Epoxy thinnerBrush coating construction can be divided into three steps: coating, smoothing, dressing. Although simple, but the technique, strength and skills of the brush coating determine the quality of the brush coating film, if the operation is not familiar, the action is not agile, the paint film will produce brush marks, flow hanging and brush uneven defects. Such as: too much paint produced flow hanging, paint viscosity produced large brush marks, uneven strength is the film thickness change.

The advantages of brushing

1) Paint can easily penetrate into the pores of the metal surface, so it can strengthen the adhesion to the metal surface.

2) Small loss of paint, very economical.

3) Suitable for the spraying can not be implemented or the thickness is not easy to reach the location of the construction.

4) Suitable for small area special-shaped components and local repair;

5) Simple tools, easy to obtain and low cost

The shortcomings of brushing

1) Low productivity and high labor intensity;

2) Poor decorative performance, and the coating surface is often left with brush marks.

3) The film forming thickness is not uniform.

2.2. Rolling

Rolling coating is the use of drum construction, suitable for coating shape is relatively flat workpiece. Construction steps and more similar to brush, the same is not suitable for drying speed too fast, poor smoothness, high solid content of the paint, if the operation is not familiar, the action is not agile, the paint film will produce rolling brush marks, flow and brush uneven defects.

The advantages of rolling

1) Paint can easily penetrate into the pores of the metal surface, so it can strengthen the adhesion to the metal surface.

2) Small loss of paint, very economical.

3) Suitable for the spraying can not be implemented or the thickness is not easy to reach the location of the construction.

4) Suitable for local repair;

5) Simple tools, easy to obtain and low cost

The shortcomings of rolling

1) Low productivity (but higher efficiency than brush brushing), high labor intensity;

2) Decorative performance is poor, and the coating surface often has rolling brush marks.

3) The film forming thickness is not uniform.

2.3. Spray

DreamThinner 17The construction of the spray gun, the use of compressed air to make the paint from the spray gun spray atomization construction method, smooth appearance and smooth, feel very good, good fullness, can get the best plane effect. It is divided into air spraying and air spraying two, according to the requirements of the final effect of the construction is the same, but the paint film to thin (40-80 micron), need several to achieve better results, and the paint film to much thicker (one can reach 80-200 micron), one can meet the construction thickness requirements.

The advantages of spraying

1)环氧稀释剂 Epoxy thinner Uniform thickness, smooth appearance and good decorative performance;

2) High production efficiency, high-pressure nonpneumatic spraying spraying area per hour can reach 200-300m2, or even more;

3) It is suitable for large area spraying construction, especially high pressure airless spraying; air spraying is suitable for workpiece construction with high appearance requirements but small area.

4)环氧稀释剂 Epoxy thinner Strong applicability, almost applicable to all kinds of coatings and coatings.

Shortcomings of spraying

1) Special equipment is required, with high cost;

2) Spraying operator has higher technical requirements;

3) The paint loss is large, the paint utilization rate is usually less than 50%, and the outdoor work will pollute the surrounding environment.

3. Paint inspection

3.1 Quality of surface treatment

Before spraying,DreamThinner 17, the surface treatment quality should be checked according to the color photos in GB8923-88 standard. GB8923-88 This standard specifies the visual rating grade of the corrosion degree and rust removal quality of the steel surface before coating. It is suitable for hot-rolled steel surfaces treated by spraying or ejection, manual and power tools, and flame rust removal. The evaluation of the surface rust removal grade of cold-rolled steel can also be used by reference.

Rusting grade

The four rust grades of the steel surface are shown as A, B, C and D. The descriptions of these rust grades are as follows: A completely covered the steel surface; B has rusted and partially peeled the steel surface; C peel has been peeled by rust or can be scraped with a small eroded steel surface; D peel has been completely stripped by rust and has generally eroded the steel surface.

Derusting grade

The surface rust removal grade of the steel is indicated by the letter "Sa", "St" or "FI" representing the rust removal method used. If the letter is followed by Arabic numerals, it indicates the degree of removal of attachments such as oxide skin, rust and paint coatings.

3.2 Visual inspection of the paint film

Check the surface condition of the paint film with the naked eye, the paint film should be free of pinhole, bubbles, cracks, falling off, flow hanging, leakage and other disadvantages.

(1) All works covered by this specification shall be inspected by the Demander, and any works found not to follow the specification shall be reworked to the satisfaction of the Demander.

(2) You can randomly sample and paint the painted materials and equipment by using acetone to the exposed metal and check the surface by using a magnifying glass to observe whether there is rust under the bottom coating. The supplier shall repair and repaint at its own expense.

(3) The thickness of the dry film and the wet film can be determined by using a meter.

(4) When checking theDreamThinner 17added matching dilution dose, the viscosity cup can be used to determine the paint viscosity in the bucket and compare with the value obtained from the manufacturer. By checking the amount of diluent, the viscosity of the paint in the tank can be measured by comparing the paint into the cup with the value provided by the paint manufacturer.

(5) The continuity of the paint film on the metal surface can be checked by the low-pressure leakage coating point detector. Inadequate coated areas shall be marked with chalk. If five or more defects are found within 10m2, the entire area may be considered defective.

(6) The surface temperature can be measured by using a surface thermometer. Moisture on non-metallic surfaces can be measured using a water meter.

(7) DreamThinner 17The paint shall have sufficient adhesion force to prevent the peeling of a layer of hardened paint when the putty knife blade is inserted under it. The interlayer adhesion shall be that two or more hardened coatings shall not be layered when using the sharp knife test. The paint should have enough adhesion, when inserted into the bottom of the paint film, should prevent the hard paint film from becoming a layer and being warped up. The adhesion between each layer should also be sufficient to not be layered when measured between two or more layers.

(8) Each paint such as primer and intermediate paint should be as far as possible without dry spray, splash, small air holes, discontinuity. The appearance can be checked according to the following table, did not meet the required place, repaint.

3.3 Inspection of paint film thickness

During the construction, the coating should be made according to the dosage, and the paint film thickness meter is often used to determine the thickness of the dry film (DFT). The thickness of the paint film should be measured after each coating, and the total thickness of the paint film should be measured after the coating.

For the edges, corners, welds, cuts and other parts, one should be applied before spraying, and then paint in a large area to ensure the thickness of the paint film in the protruding part.

Under normal circumstances, the thickness distribution of paint film should be controlled at more than 90%, that is, the thickness value of the dry film measured by more than 90% of the measuring points must reach or exceed the specified thickness value of the dry film, and the thickness value of the dry film measured by less than 10% of the measuring points should not be less than 90% of the specified thickness value of the dry film, otherwise it should be applied or coated.

DreamThinner 17When detecting the thickness of the paint film, the selected measuring point should be representative, and the detection frequency should be determined according to the specific situation of the surface of the coating. In principle, according to every 1~3m2 test a point (or according to other provisions, such as flat surface can be detected about 10m2, complex surface can be detected about 5m2. Small cabin, small liquid cabinet and other small areas or parts, each free surface has more than three measuring points.)

1) Measurement of paint film thickness:

Each layer of paint, to measure the thickness of the film, the total thickness measurement before the factory. After the field paint replacement and finish coating, conduct the final paint film thickness measurement. The measurement must be made after the paint film is completely dry.

If the required minimum dry film thickness is not met according to the dry film verification, an additional paint coating shall be applied to obtain the specified thickness.

Set one measuring point every 10m2. The thickness of the dry and wet paint film can be measured by the membrane thickness gauge or the Nordson micrometer.

The discontinuity of the metal surface paint film can be checked by a low pressure detector.

Metal surface temperature can be determined by the use of a surface thermometer.

2) Judgment criteria

If 5 or more defects are found in an area of 10m2, the demander may consider the paint in the whole area defective.

90% of the test point paint film thickness must meet the specified standard value. If the points do not reach the specified standard value, the thickness of the paint film shall not be less than 90% of the specified standard value, otherwise, reapply the paint.

4. Welcome to orderDreamThinner 17

We expect that in the future development process, products and services will be recognized by everyone, at the same time, establish a good Corporate Culture and social responsibility, create excellent value for employees and customers, for the society, the environment. In the future, we will always stay true to our original aspiration, forge ahead, continue to focus on the field of industrial anticorrosion, and strive to become a "trustworthy partner" in the eyes of customers. Protect your assets and enhance the value of your products through our professional and diversified services.

Epoxy thinner is specifically used in the construction process of epoxy paint. It can adjust the construction viscosity of the paint, facilitate construction, adjust the drying rate of the paint, have good wettability for the substrate, and clean the spraying equipment of the spray gun and kettle. Adding an appropriate amount of diluent can adjust the viscosity of epoxy paint to the corresponding range, making it convenient for construction. “

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