Study on the formulation design of the hottest gft

Study on formulation design of gft-1 high performance anti-corrosion coating III

2. Performance test

the main performance indexes of gfg-1 high performance anti-corrosion coating are tested according to national standards and enterprise standards. The results are shown in Table 3 and table 4

Table 3 physical performance indexes of gft-1 high performance anti-corrosion coating

item index test method

paint film color and appearance color are uniform Smooth and smooth q/hf

curing content (%) ≥ 95.0 q/hf

surface dry H (20 ℃) ≤ 3 bg1728-79

solid dry H (20 ℃) ≤ 24 bg1728-79

flexibility (mm) 1 bg1731-79

adhesion (grade) 1 bg1720-79

impact strength (J) 4.9 bg1732-79

hardness (H) ≥ 3 bg1732-86

wear resistance(500g, 1000 rpm) ≤ 40mg bg1768-79

Table 4 corrosion resistance of gft-1 high performance anti-corrosion coating

test results of soaking time of corrosive medium

30% sulfuric acid solution has no change in the paint film for three months

15% hydrochloric acid solution has no change in the paint film for two years

reduction of area refers to the 25% and saturated sodium hydroxide solution have no change in the paint film for two years after the material sample is broken by tensile load

10% saturated sodium chloride solution has no change in the paint film for two years

steam Oil has no change in paint film for two years

ammonia has no change in paint film for two years

alcohol has no change in paint film for two years

saturated urea solution has no change in paint film for two years

sea water has no change in paint film for two years

IV. main performance characteristics:

to sum up, gft-1 high-performance anti-corrosion coating has the following main performance characteristics:

(1) good impermeability, excellent protective performance under harsh environments, acid, alkali, salt Long term corrosion of corrosive media such as seawater

(2) the solid content is up to about 95%, which reduces the waste of resources and environmental pollution caused by solvent volatilization

(3) apply 7 The physical and mechanical properties of the low-temperature front layer are outstanding, with strong adhesion, good wear resistance, toughness and compactness

(4) during the curing process, the solvent volatilization is very small, and one coating can be very thick without forming pinholes, which reduces the number of construction passes required to achieve the same design coating thickness

(I) the key technology used in gft-1 high-performance anti-corrosion coating

green technology

while pursuing the high performance of anti-corrosion coating, it saves energy Protecting the ecological environment, a new topic of international significance, puts forward new requirements of "no pollution" to the coating industry. Developing green products and carrying out green innovation can not only reduce pollution and improve the environment, but also save resources, reduce costs and improve economic benefits. Therefore, it has become a development trend of the global coating industry

gft-1 high performance anti-corrosion coating uses modified epoxy resin as the base material and active diluent that can participate in cross-linking and curing and become the paint film as the solvent. The effective component of the coating is up to about 95%. Therefore, the pollution caused by solvent volatilization and the damage to the construction personnel are avoided during the construction

the use of low-cost scale filler

scale filler plays a key role in greatly improving the corrosion resistance of heavy anti-corrosion coatings. At present, glass flakes and stainless steel flakes are widely used in heavy anti-corrosion coatings produced at home and abroad. Due to the difficulty in processing and manufacturing such scales, their high price and high content in coatings, the heavy anti-corrosion coatings made from them are often difficult to be popularized and applied because of their high cost. Therefore, it is of great value to seek a cheap substitute for flake filler for the practical application of heavy anti-corrosion coatings

solventless

at present, the volatile solvent content of most coatings sold on the market is as high as about 50%. A lot of resources are wasted and serious environmental pollution is caused in the construction. Therefore, developing high solid coatings and making them solvent-free is becoming one of the research directions of coatings. The so-called solvent-free coating is a coating that does not contain or contains a small amount of volatile solvents

gft-1 high performance anti-corrosion coating uses a composite active diluent as the solvent. The active diluent can be cured into a film with the curing agent due to its epoxy group. Therefore, the solid content of the product is up to about 95%, which greatly reduces the waste of resources caused by solvent volatilization. Under the same design thickness, the area that can be painted per kilogram of coating is greatly increased. Therefore, the anti-corrosion coating that can highlight the base tree per unit area is reduced. Because the coating process is cumbersome and demanding, it is often difficult to implement in engineering. Therefore, on the basis of ensuring the service performance of products, it is of great practical significance to simplify process procedures, improve construction efficiency and reduce engineering costs. Gft-1 high performance anti-corrosion coating has the following characteristics: simple coating process, labor-saving and time-saving:

simple surface treatment

this product takes modified epoxy resin as the base material, and has strong adhesion to metal and concrete. Therefore, the surface treatment requirements of the metal substrate are relatively low, as long as the floating rust and oil stain are removed. If the "multi-functional steel surface treatment fluid" produced by our company is used, the four purposes of oil removal, rust removal, phosphating and passivation can be achieved at the same time after one treatment, forming a protective film on the steel surface and improving the adhesion with the paint film

high coating efficiency

gft-1 high performance anti-corrosion coating has very little solvent volatilization during curing, and one coating can be very thick (-300 μ m) It will not form pinholes. Therefore, the coating can be made into thick paste. It only takes 2 - for Jinan new era Gold Testing Instrument Co., Ltd., the concept of mechanical testing machine is very large. One vocabulary and three passes can reach the design thickness. In recent years, the international popular high-pressure airless spraying makes the large-area construction of this kind of thick paddle coating possible. The main characteristics of high-pressure airless spraying are high coating efficiency (-500 ㎡/h), no rebound paint mist flying phenomenon, and the thickness of one-time spraying can reach 100-300 μ m. The compactness, adhesion and uniformity of the coating can be improved, and compressed air is not mixed in the coating; Moisture and impurities, so the construction quality is guaranteed

realize the "integration of primer and finish"

this product not only has strong adhesion and can be used as primer, but also improves the weather resistance of the paint film due to the addition of UV absorbent. Therefore, it can be used as a topcoat for outdoor protection. Thus, the "bottom coating in one" is realized, and the construction procedure is simplified

(to be continued)

this 4. Wire/sheet tensile test article is from the network, and the copyright belongs to the original author. It is only for everyone to share and learn. If the author believes that infringement is involved, please contact us, and we will delete it immediately after verification