What Is an Epoxy Coating?

Epoxy coatings are generally divided into two types: oily epoxy coatings and water-based epoxy coatings. According to the use performance, there are generally wear-resistant epoxy coatings and epoxy anticorrosive coatings. Strict classification should also include antistatic epoxy coatings and building environmental protection coatings. Oxygen decorative coatings should be subdivided into 4 categories. The feasibility report of the China Project Feasibility Research Center analyzes that in terms of the epoxy (resin floor) coating industry, the customer value has two levels. First, the value of product performance is the environmental protection and abrasion resistance of the product. After the basic properties of the product, such as abrasion resistance, are met, environmental protection and practicality are the most important. Secondly, subdivide the value of performance, and develop and produce epoxy coating products according to the needs of different customers for the performance of epoxy coatings, and meet customers' product performance requirements. To meet the needs of different customers, the products are naturally differentiated, so this value level is the easiest for independent markets to become innovative categories. Clearly and satisfying the customer's upward value, you can find the starting point for innovation and upgrading. Products that are derived from customer value and higher than customer value can firmly attract consumers.

Epoxy coating

Epoxy coatings are generally classified as oily

It is aimed at

Suitable for steel surfaces and

3.1 Interpenetrating mesh wear-resistant coating. After curing, an interpenetrating mesh polymer anticorrosive coating is formed between the epoxy resin chain and the rubber chain, thereby effectively preventing the change of the coating and improving the weatherability of the coating.

3.2 Good corrosion resistance. The coating also has extremely strong adhesion, weather resistance, water resistance, durability and other properties.

3.3 Convenient construction and curing at room temperature. The construction process is simple and is not limited by the site environment. It only needs to be used when it is used. It can be cured into a film at normal temperature by using a universal construction method.

project	index	Testing standards
State in container	After mixing, there is no hard lump and it is uniform	GB / T 3186-1982
Mixed	Can mix evenly
Constructability	Barrier-free
Application period, h	3
Viscosity (coated -4 cups, 23 ° C), s	55	GB / T 1723-1993
Fineness, & micro; m	50	GB / T 1724-1979
Solid content,%	63
Surface drying time (23 ), h	3	GB / T 1728-1989
Actual drying time (23 ), h	twenty four	GB / T 1728-1989
Paint film appearance	Assorted, flat
Adhesion (1mm grid spacing), grade	2	GB / T 9286-1998
Bending resistance, mm	3	GB / T 1731-1993
Impact resistance, cm	50	GB / T 1732-1993
Resistance to neutral salt spray	120h no blistering, no falling off, no rusting
Salt water resistance (5% NaCl, 23 ° C, 7d)	Does not bubble, does not fall off, does not rust
Alkali resistance (5% NaOH, 23 ° C, 7d)	Does not bubble, does not fall off, does not rust
Oil resistance (immersed in kerosene, 23 ° C, 7d)	Does not bubble, does not fall off, does not rust
Characterization of epoxy resin	Presence of epoxy
a. The test time can be negotiated according to the requirements of using the mixture.

5 Construction methods

5.1 Preparation method: first stir the coating thoroughly to the bottom of the barrel, and use a special curing agent according to the coating and curing agent ratio of 10: 1 (weight ratio) (when the temperature is below 10 in winter, the coating and curing agent ratio is 4: 1 (weight ratio) add winter curing agent), stir well and mature for 10-15 minutes before use It is best to do a curing test first.

5.2 Surface treatment requirements: When painting metal surfaces, sand blasting, shot blasting and rust removal have reached the international Sa2.5 level, necessary cleaning after degreasing, keeping the surface dry, and painting within 4 hours, when painting concrete, It must be air-dried to 10% moisture and the surface must be cleaned before painting.

5.3 Use period: It is recommended to use up the prepared paint in about 2 hours (20 ° C). Do not pour the unused primer back into the original paint.

5.4 Coating thickness: high-pressure airless spraying and air spraying, dry film thickness is about 60m, apply by hand brush, dry film thickness is 55m.

5.5 Theoretical Consumption: If the influence of factors such as the coating environment, coating method, coating technology, surface condition, structure, shape, surface area and other factors during actual construction is not considered, the general consumption of primer is about 0.2kg / .

5.6 Coating method suggestion: In order to make the coating smooth, it is best to use high-pressure airless spraying. Airless spraying is selected under the condition of no high-pressure airless spraying, and manual brushing is used as the third coating method.

5.7 Diluent dosage: If the coating is really too thick, a special diluent can be added appropriately. The dosage is 3-10%.

5.8 Tool cleaning: It can be cleaned with special thinner. If the ambient temperature is lower than 10 , it should be extended appropriately.

5.9 After finishing the last topcoat, it must be cured for 7 days before being put into use.

6 Packaging and storage

6.1 Packaging: iron drum sealed packaging, net weight of 20kg per barrel, net weight of curing agent per barrel of 15kg, net weight of thinner per barrel of 15kg.

6.2 Storage and transportation: It is flammable and stored in a cool, dry and ventilated place away from fire sources. The storage temperature is not higher than 40 ° C. Avoid collisions and do not allow contact with water.

6.3 The validity period is one year. If the validity period is exceeded, it can still be used after passing the re-examination.