Spray painting and plastic spraying are the main ways of industrial surface decoration today. In order to protect the environment, 1982 invented plastic spraying. After 20 years of development, no more than 5% of enterprises now use plastic spraying. Mainly the difference between spray painting and plastic spraying: spray painting is better than plastic spraying in leveling. The molecular structure of solvents, additives and resins used in spray painting is of great help to leveling. But there is no plastic spraying, so it often has an orange effect. Paintings can be repaired. In the process of painting, pockmarks or scratches caused by too many paint films can be repaired at any time, because the paint has the function of recoating. And plastic spraying is not.
Which is better, plastic spraying or spray painting?
Plastic spraying is good, because plastic spraying does not need diluent, and the construction has no pollution to the environment and no toxicity to the human body; The coating has excellent appearance quality, strong adhesion and high mechanical strength; The curing time of spraying construction is short; The corrosion resistance and wear resistance of the coating are much higher; No primer is needed; Simple construction and low technical requirements for workers; The cost is lower than the painting process; Some construction occasions have clearly put forward that electrostatic plastic spraying technology must be used; In the process of electrostatic powder spraying, there will be no common flowing phenomenon in the coating process.
Q: What's the difference between plastic spraying and painting?
Plastic spray coating (also known as porcelain spray coating, multilayer pattern coating, relief coating, gorgeous spray brick and Bonn spray brick) is an aggregate architectural coating with organic polymer or the compound of organic material and inorganic material such as silica sol as the main film-forming substance. Commonly used organic polymers include styrene-acrylic emulsion, pure acrylic emulsion, epoxy acrylic emulsion, vinyl acetate-ethylene copolymer emulsion, water emulsion epoxy resin and so on. Rutile titanium dioxide, lithopone, zinc oxide, talcum powder, mica powder, quartz powder and fiber materials such as asbestos wool are usually used in mixed fillers. The type and dosage of additives depend on the substrate.
According to the construction characteristics and different functions of plastic spraying coating, the coating structure can be divided into three parts:
(1) Base oil (primer and primer)
Primer is the coating that is first applied to the substrate. It penetrates into the interior of the matrix, enhancing the strength of the matrix, sealing the surface of the matrix, eliminating the harmful factors of the surface of the matrix on the coating adhesion, and increasing the bonding force between the skeleton and the matrix.
(2) Intermediate layer (intermediate coating, skeleton)
Intermediate coat is a unique forming layer of plastic spraying and the main component of plastic spraying. Spray it on the base oil with a special large-caliber spray gun and then roll it to form a three-dimensional pattern, which is full of texture, novel and beautiful. The skeleton has enough bond strength to strengthen the building. At the same time, the skeleton is the main component of the plastic spraying coating, which increases the durability, water resistance and strength of the plastic spraying coating.
(III) Topcoat (topcoat and topcoat)
Surface oil is the surface layer sprayed by plastic. Various light-resistant color pigments are added to the surface oil to make the plastic-sprayed coating have a soft color. According to different indoor and outdoor requirements, smooth and flat coatings can be sprayed. Surface oil can beautify the appearance of plastic spraying and improve the durability of coating.
Spray painting and plastic spraying are the main ways of industrial surface decoration today. In order to protect the environment, 1982 invented plastic spraying. After 20 years of development, no more than 5% of enterprises now use plastic spraying. Mainly because of the difference between painting and plastic spraying:
● Spray painting is better than spray leveling.
The molecular structure of solvents, additives and resins used in spray painting is of great help to leveling. But there is no plastic spraying, so it often has an orange effect.
● Painting can be repaired.
In the process of painting, pockmarks or scratches caused by too many paint films can be repaired at any time, because the paint has the function of recoating. And plastic spraying is not.
● The flexibility (curvature) of spray painting is better than that of plastic spraying.
Spray painting can bend 1mm, or even t-bend, but plastic spraying is not acceptable.
● The painting is rich in decoration.
The appearance color of inkjet printing is dozens of times that of plastic spraying, and the same material can be made into different effects. Such as plastic, wood, paper, cloth, leather and other non-metallic materials can be made into aluminum effect.
● The hardness of painting is the same as that of plastic spraying.
Plastic spraying pretreatment has low cost and faster speed than plastic spraying.
● Plastic spraying must be baked at high temperature.
Plastic, wood, paper, cloth and leather can't be baked at high temperature.
● Spray painting can be delivered quickly, even if it is a small batch or special requirements, it can meet customer orders to the maximum extent.
Compared with plastic spraying, the surface quality of spray painting is easier to overcome the defects of substrate and meet the quality requirements of customers. However, if the plastic spraying surface is not handled properly, it is more likely to produce pitting defects (bubbles).
What are the advantages of plastic spraying over spray painting?
Plastic spraying appeared to replace painting.
The quality of 1 is higher than that of paint, especially for outdoor use. The wear resistance and corrosion resistance of spray molding are better than that of paint.
2 pollution and poor working environment. Everyone who has done it knows that paint can't be recycled when it is dropped, and it is pollution when it is discharged. At present, there are physical methods to replace acid and alkali in plastic spraying pretreatment, and the processing process is much cleaner, and the production environment is not as bad as painting!
3 price, plastic spraying is cheap at the same level, and the powder can be reused.
What's the difference between plastic spraying and spraying?
Strictly speaking, spraying is a general term for plastic spraying and painting, but it is often misunderstood as painting.
Generally speaking, plastic spraying refers to powder spraying, that is, polar powder coatings such as polyester, polyamide and epoxy are polarized by high electrostatic voltage. Through electrostatic spray gun synthesis, the surface of the workpiece that needs to be coated after surface treatment (such as phosphating treatment) is sprayed, and then dried to form a firm coating with excellent corrosion resistance.
Difference between plastic spraying and painting in sheet metal surface treatment
Plastic spraying is to spray a layer of plastic powder on the surface of the product, so the painting needs no explanation. Plastic spraying products are superior to painting in mechanical strength, adhesion and corrosion resistance. & gt
What are the differences and connections between these surface treatments in process flow?
1. Baking paint: Generally speaking, paint will not dry until it is heated. There are two kinds of paints: powder paint and liquid paint. The difference is that the raw material of the former is solid powder, and the temperature is about 200 degrees. Oversprayed paint in construction can be recycled, with less waste and strong adhesion. The latter is liquid, the temperature is about 150 degrees, and the overspray paint cannot be recycled, so the adhesion is slightly low. Second, painting: generally speaking, it refers to liquid painting. There are two techniques: liquid painting and self-drying painting. Self-drying refers to natural curing at room temperature after spraying, which has lower cost, but the effect can not be compared with painting. Third, plastic spraying: it is the surface treatment of another raw material, which is different from the former in that its material is pe or pvc. Their similarity is to clean the sprayed objects before spraying! Another explanation:
Paint technology is a kind of paint technology, which is easy to understand and its technology is very complicated. First of all, that board needs to be painted with putty as the bottom layer of paint; Leveling the putty, and grinding until the putty is dry;
Then spray the primer repeatedly for 3-5 times, and polish it with water sandpaper and emery cloth after each spray; Finally, spray 1-3 times bright topcoat, and then bake and cure the paint layer at high temperature.
Compared with ordinary high gloss paint, paint has two essential differences-
First of all, the primer layer of the paint is very thick. In fact, if the surface of real paint is hard to break, it will break like enamel instead of peeling off like ordinary paint.
Second, the baking process, rather than the painting process, has undergone a high-temperature curing process.
Because of this difference, compared with ordinary paint, the brightness, compactness and especially stability of paint are much higher. If mechanical damage does not occur, the surface of piano paint will last for many years.
After that, it is still as bright as new, and ordinary bright spray paint has already been oxidized and infiltrated.
The third explanation
What's the difference between baking paint, spray painting and plastic spraying? How to choose?
Definition:
Baking paint: Generally speaking, paint will not dry until it is heated. There are two kinds: powder paint and liquid paint. The difference is that the raw material of the former is solid powder, and the temperature is about 200 degrees. Oversprayed paint in paint construction can be recycled, with less waste and strong adhesion. The latter is liquid, the temperature is about 150 degrees, and the overspray paint cannot be recycled, so the adhesion is slightly low.
Spray painting: generally speaking, it refers to liquid spray painting. There are two processes: liquid spraying and self-drying spraying. Self-drying means that it can be cured naturally at room temperature after spraying, and the cost is low, but the effect is incomparable to paint coating.
Plastic spraying: it is the surface treatment of another raw material, which is different from the former in that its material is pe or pvc. Their similarity is to clean the sprayed objects before spraying!
Application: Generally speaking, baking paint, painting and plastic spraying have their own advantages and disadvantages. Baking and painting: the color effect will be better, the film thickness will be thinner, suitable for some precision products, and the cost will be higher; Plastic spraying: good wear resistance and corrosion resistance, thick paint film, suitable for rough products such as cabinets and equipment, low cost and recyclable plastic powder. Baking paint is better than painting, and its leveling, adhesion and recyclability of paint powder are better than painting!
Which antirust effect is better, plastic spraying or painting? Why?
Spray painting has a good antirust effect, but if you choose inferior paint, it is definitely not as good as spray painting.
Whether it is plastic spraying or painting, there is a pretreatment process, oil removal-rust removal-surface adjustment-phosphating. Without pretreatment, painting and plastic spraying will not have rust-proof effect.
For a simple example, the shell of the household air conditioner is plastic-sprayed, and it is no problem to expose it to the sun for several years after pretreatment. Some air-conditioning brackets are painted and some are sprayed with plastic. Compare it and you will know the effect.
The car paint is also pretreated, and it is no problem to be exposed to the sun outside.
Regardless of the cost, we can't just say whether it is spray painting or plastic spraying. It depends on your technological process and the quality of raw materials you choose.
At the same cost, plastic spraying is better than painting, but the surface of plastic spraying cannot be as bright as car paint.