How to inspect UV glue from the appearance, how to choose UV glue, what to pay attention to

Actually, I don't really understand the meaning of your question, what are you trying to test UV glue? Is it to look at the quality of its products before curing? Or how do you see if the glue is cured?

There are many types of UV glue, silica gel, epoxy, acrylic, and cyanoacrylic can all be made into UV form.

Generally, the packaging of UV glue is a black amber light-proof bottle, if it is a transparent bottle, then you have to suspect a quality problem of glue.

The viscosity of many UV adhesives will change at relatively high room temperatures, affecting their curing. However, the viscosity of UV adhesive is different, and this judgment can only be made according to your own product.

As for curing, most manufacturers' UV glue is transparent and straw-colored, so if you want to judge whether it is completely cured, as long as you look at whether the glue turns yellow after being irradiated by UV lamp, it means that the curing is OK. However, this color usually fades after a few days. The time it takes to fade varies depending on the brand.

There are also some brands of UV glue that are better done, and the discoloration will be more obvious before and after curing, which is convenient to operate.

When choosing UV adhesive, pay attention to the substrate to be bonded, the viscosity of the glue, the bonding strength and the curing speed of the glue. Chenlink's UV adhesive is very good, and our company is currently using it.

Inferior shadowless glue is easy to produce.

Bubbles, mainly manifested in, the glue is too thin, the glue is just cold when the surface is fine, after the light to produce bubbles, choose high-quality shadowless glue to avoid the occurrence of such phenomena.

Some precautions for UV glue:

How do I get rid of spilled adhesive?

Soft cloth and paper towel gently wipe off the spilled glue, which can be wiped with acetone alcohol, which is relatively easy to remove after positioning, and needs to be scraped off with a knife after it is fully cured.

Why does the adhesive surface that overflows or is not dry when it is fixed or exposed?

Surface drying is a weak point of light-curing adhesives and is caused by oxygen inhibition of polymerization. It can be cured quickly with a high-powered light source, or under nitrogen protection.

Why does the UV glue that binds glass to metal tend to fall off in the summer?

Summer is the season when UV glue accidents are frequent. When it rains or the weather is humid in summer, the glass surface is very easy to absorb moisture, and many customers simply wipe with a cloth and cannot remove the water film, resulting in strength decay until it falls off. The glass can be dried with a hair dryer to maintain a long-term bond.

Why do I feel that the bond strength of some glues decreases in winter?

When the temperature drops in winter, the UV adhesive film will become hard and brittle, resulting in a decrease in the strength of the feel. In winter, low-temperature regions need to adjust the adhesive formulation to make it have better low-temperature toughness.

How long does it take for UV adhesive to fully cure?

According to the specific UV adhesive and the curing lamp used by the customer, it cannot be generalized, and it needs to be determined by experiment. If the UV light intensity is high, the irradiation time is short, and it can be cured, and vice versa.

Can our UV adhesives cure under visible light?

Yes, but it's slower and requires more sunlight.

How do I separate or dismantle an object that has been bonded with UV adhesive?

When the bond is not good, it is necessary to separate or remove the sticky material for rebonding, depending on the specific glue and the sticky object, the methods that can be used are hair dryer heating, boiling, steam smoking, acetone or ethanol soaking, or long-term water soaking.

Why can UV glue from other manufacturers often destroy the glass?

The hardness of the glue is increased after curing, and the force will be quickly transmitted to the glass after force, causing glass damage, and in actual use, due to the hard glue film, it can not buffer the impact and has a short service life. The toughening agent added to Evergrande's UV adhesive can effectively absorb stress, and the bonding effect is better and longer.

What are the precautions for UV adhesive curing of plastics?

Many plastics have low heat-resistant temperatures, so it is necessary to pay attention to heat dissipation when curing, and irradiate them many times to prevent deformation of plastics with too high temperatures; The transmittance of ultraviolet rays in some plastics is low, such as PVC transmittance is only 25-30%, PC contains a large number of ultraviolet absorbers, these materials should be paid attention to when curing, and can be irradiated for a long time with T8 T9 ultraviolet lamps and HPL high-pressure fluorescent bulbs and so on.

UV curing adhesive.

It is a UV-curing adhesive, a type of adhesive that must be cured by ultraviolet light.

How to use: 1. One of the two objects to be bonded is transparent and the surface is clean, dry and grease-free;

2. Apply UV shadowless adhesive on one of the surfaces, close the two planes, and irradiate it with a UV lamp or high-pressure mercury lamp with appropriate wavelength (usually 365nm 400nm) and energy.

3. It is recommended to remove the remaining glue on the workpiece and then re-illuminate it to complete solidification when the light is about 6s and initial positioning;

How does the camera identify UV glue? For those born in the post-90s and before, when talking about cameras, they will definitely think of film, although it is popular to take pictures with smartphones nowadays, but the texture is not as good as that of film. So how to identify and select camera film when using a glue roll camera?

Now I would like to introduce to you the specific method of how to identify camera roll.

Tool Raw Material, Currency, Film, Film, Camera Model.

Method: Read step by step.

Before shooting, it is important to know the sensitivity of the film used and its performance. At present, the film is available in black and white and color. Black and white rolls are further divided into panchromatic, separated and blind rolls.

Panchromatic rolls are suitable for all kinds of photography; Because the color separation roll does not feel red light, it can only shoot generally no red scenes; Blind color rolls are not sensitive to other colors except for violet and blue light, and are only suitable for remaking text charts and making slides.

There are two kinds of color films: color reversal films and color negative films. After the reversal film is shot, it is possible to directly obtain a transparent image with the same brightness and color as the subject through a special development method. Because its image clarity is relatively high, and the layers and colors are also richer, it can be directly plate-making and printing.

Color negatives must be magnified in color to see the effect of the primary colors. Color film is also divided into daylight type and light type, and cannot be mixed.

The type of film is divided into single plates, etc.: the sensitivity is divided into ° and so on. For every 3° difference, the sensitivity is about doubled.

Precautions: Wanton.

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1.Very strong adhesion.

UV adhesives can be used to bond a variety of substrates for structural potato decoration. The bond strength usually exceeds the strength of the substrate to which it is bonded.

2.Substrates that are bonded differently.

Unlike other adhesives, UV adhesives can bond to many different substrates. It can bond dissimilar substrates that cannot be bonded with soldering or other adhesives.

3.Single-group dispensers.

Simple sizing, no mixing, no purification, no expiration date after opening and no pollution.

4.Instant cure.

Light-curable adhesives cure in seconds, not minutes or hours. Compared with other adhesive manufacturing processes, light-curing adhesives can simplify the production of self-sensitizing response, provide the best detection, reduce the workload, and increase the production volume.

5.It takes a lot to know about bonding.

The sizing is applied at one station of the production line, the workpiece is assembled at the second station and cured at the third station. Design a production process that meets your requirements and is ready to cure when ready.

6.100% solvent-free formulation.

Light-curable adhesives are 100% reactive and solvent-free.