Can plastic parts be painted directly?

OK.

Bumper. Generally without primer, pure plastic. Spraying often has a lot of gray spots, because the plastic is very static and easy to get dust.

Generally, after the bumper is polished, the degreasing and dust removal treatment begins, but the dust cloth is wiped more and more. You can give up the dust cloth, use a deerskin or a towel that does not shed hair, wash the towel or deerskin with clean water, wring it out, and then wipe the bumper, wipe it twice.

Then use a spray gun to dry the water, blow vigorously and then spray the plastic primer and then the plain topcoat. If it's metallic paint.

Spray the base color, after drying, use 1500 sandpaper to simply dry grind it, wash it with the towel just now with water, wring it out and wipe it as a whole, and continue to spray after blow-drying.

Precautions for car painting.

The paint room must be clean and dust-free.

The air is strictly filtered, and the baking temperature can meet the technical requirements of different coatings.

An exhaust device must be set up in the paint baking room, so that the solvent and decomposition substances volatilized from the coating film during the drying process do not exceed a certain concentration, so as to prevent affecting the drying speed, quality, and even production of the paint film.

The wet paint film of solvent-based paint should be left for a certain amount of time before drying, so that most of the solvent in the paint film volatilizes and levels, which can reduce defects such as "orange peel", "pinhole" and "blistering".

Strictly speaking, plastic parts can be painted, but some can be painted directly, and some need to be painted after surface treatment. Plastics themselves can be divided into non-polar materials and polar materials according to their polarity. For polar materials, the function keys of the material are open and can be directly interlinked with the function keys of the paint.

That is, after the paint is sprayed, there is adhesion (adhesion). Therefore, polar plastics can be painted directly.

It is not possible to spray paint directly, and a layer of plastic primer needs to be sprayed before painting.

A layer of plastic primer is required before painting.

It is an acrylic primer. Remove plasticizers, release agents, antistatic agents, lubricants, antioxidants, etc. on the surface of the substrate, and remove the decomposition or separation products of the remaining low molecular oligomers in the polymer substrate and the surface of the single substrate after oxidative decomposition or pulverization.

After solvent treatment, the surface humidity of the substrate swells, which is conducive to the mutual miscibility and combination of the substrate and the coating.

Key Benefits: Technical indicators Acrylic primer paint film appearance: the paint film is smooth and smooth, the color conforms to the standard model surface dry 2h, solid 24h

Matte: agreed (20° 80°).

Alkali resistance: 24 h, no foaming, no shedding, no wrinkle.

There are many options for spraying plastic surface paint, such as ordinary color paint, rubber paint, UV paint, PU paint, etc., and what paint you need to spray depends on your own needs. In the spraying of plastic surfaces, the spraying of nylon and PP materials will encounter the problem of paint peeling.

The plastic surface spray paint peeling is mainly caused by the lack of adhesion between the substrate and the paint, and the usually effective solution is to spray a layer of adhesion treatment agent developed by Jiongsheng treatment agent between the substrate and the paint coating to improve the interlayer adhesion between the substrate and the paint, solve the phenomenon of paint peeling, and pass the 100 grid adhesion test up to 5b.

Construction process of plastic spray paint adhesion treatment agent (taking Jiongsheng nylon treatment agent as an example):

1.Wipe the nylon material to be processed clean and remove any remaining grease or release agent from the surface.

2.Spray or wipe the nylon treatment agent on the nylon material to be treated until the dry film is 5-10um, and let it stand for 5-10 minutes.

3.Apply ink or paint and let stand for 5-10 minutes.

4.The coated workpiece is forced to dry at 80 degrees for 30 minutes.

Mainly look at the type of plastic substrate, and then choose the corresponding coating.

Summary. Hello dear. OK.

Paint can be sprayed on the sprayed parts, and the powder coating sprayed is a thermosetting resin, so it will not blister after painting.

Is it okay to spray paint on the sprayed parts?

Hello dear. It can be painted on the sprayed parts, and the powder coating is a thermosetting resin, so it will not blister after painting.

Can the surface be painted after spraying?

Yes, spraying and painting is also to prolong the storage and carrying time of the workpiece, if the processed workpiece has an aerobic grip cavity layer, it needs to be deoxidized. For example, pickling, otherwise it will affect the adhesion of the substrate surface and shorten the anti-rust time, and phosphating can enhance the corrosion resistance and adhesion of the segment concealment by more than 2 times.

The surface will not blister.

Hello, as long as the technology is passed, it will not appear.

Yes. No primer, only topcoat can be used.

Sand the surface of the plastic parts with 600, clean and dry with clean water, and wipe again with degreaser. The plastic primer does not need to be mixed with other auxiliary materials, spray it directly, spray it twice to cover, pay attention to the spray spray, not too thick, too thick will affect the adhesion between the topcoat and the substrate, and the interval between two passes is 3 5 minutes.

According to the polarity, the plastic body can be divided into non-polar du

Sexual materials and polar materials. For polar materials, the function key of the DAO material is open back, which can be direct.

A: Cross-link with the function keys of the paint. That is, after the paint is sprayed, there is adhesion (adhesion). For non-polar materials, paint should not be sprayed directly onto the plastic surface.

Because the function keys of the plastic are not opened, there is no affinity with the paint. Therefore, the plastic surface must first be activated before it can be sprayed with paint.

The common polar materials are ABS and AS, and the common non-polar materials are PP materials, and there are many activation methods, such as grinding, flame treatment, and Jiongsheng PP treatment agent. In short, the function key of the plastic surface is opened, and it should be cross-linked with the paint.

3.The main reason for the poor adhesion of the surface of plastic and metal materials is the poor adhesion between the layers of paint and the surface of the material.

If the adhesion is not up to the required level, there may be a chemical reaction.

In addition to obtaining good paint protection characteristics, spraying pearlescent white paint on the surface of PP plastic substrate craft jewelry is mainly to highlight the beauty, fullness and surface gloss of the craft jewelry in color, and at the same time, the added value of the product is also greatly improved, and the sense of grade is stronger. On the other hand, surface painting can also cover up small flaws in the material on the surface of craft jewelry.

Now there is a spraying project PP plastic spraying pearlescent white paint has the problem of paint peeling, the hand buckle or 100 grid test can not pass, and the coating falls off as a whole, the following is summarized through the analysis of the case, how Shizukawa Chemical PP treatment agent solves the problem of PP plastic spraying pearlescent white paint through the way of primer to enhance adhesion.

Question Requirements:

PP material craft jewelry spray pearlescent white paint, spraying after the initial adhesion test, the use of nails to gently buckle the surface of the surface of the patent leather coating to produce flying paint, no adhesion at all, the whole piece falls off. Now it is necessary to paint the surface of the jewelry, and when the hand buckle or 100 grid adhesion test is tested, there will be no paint peeling and coating peeling.

Cause Analysis:

First of all, from the aspect of the substrate, PP plastic is a non-polar substrate, poor adhesion properties, paint is difficult to adhere firmly on its surface, followed by the difference between pearlescent white paint and other plastic paint, that is, pearlescent white paint will be added to mica powder or titanium dioxide for deployment, so due to the presence of additives, the adhesion of the coating will also form a certain impact.

Solution:

From the polarity aspect, it is obvious that it is necessary to enhance the interlayer adhesion between pearlescent white paint and PP substrate, and the general treatment method is to form a special film layer through PP treatment agent primer, improve the substrate wetting and enhance the intermolecular force between polar functional groups, followed by the formation of chemical bonding between the film layer and the paint layer, and form a firm and complete high adhesion coating by the bridge of the film layer. The second is the influence of paint, which can be solved by adjusting the PP treatment agent of the matching pearlescent white paint.

Application Process:

PP substrate craft jewelry surface cleaning - spraying Jingchuan PP treatment agent (65 baking for 3-5 minutes) - spraying pearlescent white paint - adhesion test such as 100 grids.

What is your plastic made of?

Strictly speaking, self-spraying paint cannot be used on automobiles, because nitro paint is used on automobiles, and self-spraying paint is alkyd paint.

Yes, but the color should be chosen well to avoid color difference. The effect is not as good as the effect sprayed by a professional auto repair shop, and if you have a slight bump, you can take it yourself and spray it with paint.

Self-spraying paint, that is, aerosol paint, is usually composed of aerosol cans, aerosol valves, contents (paint) and propellants, which is a kind of paint that is processed by special methods and filled at high pressure to facilitate spraying, also known as manual painting.

It is recommended not to spray, polish, paint, wax and other processes by yourself are very cumbersome, and it is not easy to control the intensity, and the effect is not proportional to the investment, and it is not cost-effective.

Yes, remember to polish before spraying.

I can spray it too, but it's ugly and very obvious.

Can be sprayed but not as good as in a specialty store.