UV glue can t be cured, and how much temperature can UV glue soften after curing

1. The problem of UV lamp, the energy value of UV lamp does not meet the requirements, you can delay the curing time to see the effect. (UV energy value is measured with UVINT150).

2. The UV wavelength of UV glue application is inconsistent. There are two peaks of 395nm and 365nm.

3. UV glue can be cured with UV mercury lamp or UVLED lamp, and the quality of UV glue is unreliable.

4. UV glue is too thick.

UVLED curing machine 365nm-395nm optional, UV glue instant curing, 2-3s.

Is UV light wave right?

If the UV light wave and the photoinitiator in the UV glue are matched.

The glue itself will be like this.

Kuer Industry (Shanghai)****.

UV glue can not be cured is generally caused by three reasons, one is the problem of glue formula leads to UV glue is difficult to cure, this problem can be improved by contacting the glue supplier, the second is that the UV curing time is too short, resulting in the glue is not cured completely, you can adjust the UV light time appropriately, the third is the UV curing equipment problem, such as the UV lamp power is too small, or the UV lamp has been used for a long time The UV strength has attenuated, this problem can be solved by contacting the UV equipment manufacturer.

After curing, UV glue can be softened at about 80-120 degrees, softened by heat and then removed.

Ordinary UV glue can be cured by ultraviolet light in the normal temperature environment, and when the temperature reaches more than 80 degrees after curing, the adhesive layer will become soft, and it is easy to open the glue if it is stressed at this time. The high-temperature resistant UV adhesive can withstand about 150 degrees, in a high-temperature environment, it still maintains good bonding strength, this glue has optical transparency, easy fluidity, excellent high temperature resistance, flame retardant, aging resistance, oil resistance, acid and alkali resistance, not resistant to boiling water and other properties.

UV adhesive can be used as an adhesive and can also be used as a compound for paints, coatings, inks, etc. The principle of shadowless adhesive curing is that the photoinitiator (or photosensitizer) in the UV-cured material absorbs ultraviolet light under ultraviolet irradiation and produces active free radicals or cations, which initiates monomer polymerization and cross-linking chemical reactions, so that the adhesive can be transformed from liquid to solid state in a few seconds.

Scope of application

The general-purpose product has a wide range of applications, and the bonding of plastics and various materials has excellent bonding effect; The adhesive strength is high, and the plastic body can be broken without degumming through the test of the destruction test, and the UV glue can be positioned in a few seconds and reach the highest strength in one minute, which greatly improves the work efficiency.

After curing, it is completely transparent, and the product does not turn yellow and does not whiten for a long time; Compared with the traditional cyanoacrylate bonding, it has the advantages of environmental resistance, non-whitening, and good flexibility; The P+R button (ink or electroplated key) damage experiment can tear the silicone rubber skin; Excellent resistance to low temperature, high temperature and high humidity; It can be applied by automatic mechanical dispensing or screen printing, which is easy to operate.

The above content reference: Encyclopedia - Shadowless Gel.

In fact, UV glue does not dry when cured, which may be due to glue formula or quality; It can also be the reason for the curing machine; It may also be due to the chiropractic method, working environment, etc.;

1.Clarify the thickness of the glue coating.

The thickness of the UV glue coating will affect the speed and effect of curing. Glue coating thickness, curing time and light intensity.

If the coating is thin, the curing speed will be relatively faster.

2.The size of the glue coating area.

There are different models of UV glue curing machines, including spot light curing machines, line light curing machines, and flood light curing machines, and the equipment can also be customized according to the actual application.

The size of the glue coating area is different, and the equipment selected is also different, which needs to be judged according to the actual use. If you need an automated production line, you can also contact the manufacturer for production line customization.

3.Substrates that are bonded or coated.

Different bonding substrates will also affect the curing speed and effect, some substrates have good UV light transmission effect, and some substrates will be slightly slower or damaged.

4.Specific glue curing requirements (speed, depth, etc.).

The different dispersion requirements of UV glue for the curing speed and curing depth of the slip punch will also affect the curing speed, which should be decided according to the actual situation.

5.Stability and uniformity of the curing machine.

The UV glue curing machine with good stability can effectively improve the production efficiency, and uniformity is very important for the yield.

6.The specific specifications of the curing machine.

Curing UV glue, light intensity on the curing machine.

Specific specifications such as safety performance and heat dissipation should be understood. You can consult the manufacturer to see.

7.Contact the manufacturer to do a curing test first.

After communicating with the manufacturer to determine which curing machine to choose, you can ask the manufacturer to arrange a prototype for testing, or bring UV glue to the manufacturer for testing.

Summary. It takes at least one minute for the curing lamp to fully cure. In use, the UV adhesive can be positioned in a few seconds, and by one minute it is very strong, it will be transparent after curing, and in the case of strong ultraviolet rays, its curing speed will be correspondingly faster.

How long does UV glue dry without curing lamp?

Hello, it takes a long time in the sun, generally about 10 minutes. UV glue refers to ultraviolet curing glue, which requires ultraviolet light to cure, if there is no UV lamp, it can be cured in the sun, so it is slower, XCVOC LED UV curing lamp only needs 5 seconds to dry, 30 seconds to dry is suitable for factory mass production.

It takes at least one minute for the curing lamp to fully cure. In use, the UV adhesive can be positioned in a few seconds, and by one minute it is very strong, it will be transparent after curing, and in the case of strong ultraviolet rays, its curing speed will be correspondingly faster.

If you don't have a curing lamp, you can use a mirror to reflect the light in sunlight to accelerate curing.

Summary. Hello dear, you can try it like this.

1. It can be dismantled by UV gel desolant. 2. UV glue will soften after being heated, easy to peel off, and it is higher than the maximum temperature resistance of UV glue. 3. Heat with electric ferrochrome, note:

This method is suitable for glass products, and plastic products should not be used. 4. Physical method, first scrape off with a blade, and then clean with alcohol.

How to remove UV glue after curing.

Hello dear, you can try this operation if you are lucky.1, you can disassemble and annihilate it by UV glue depressant. 2. UV glue will soften after being heated, easy to peel off, and it is higher than the maximum temperature resistance of UV glue. 3. Heat with electric ferrochrome, pay attention to the key quietly rushing:

This method is suitable for glass products, and plastic products should not be used. 4. Physical method, first scrape off with a blade, and then clean with alcohol.

u What are the degumming agents?

Hello dear, I'll check it out for you.

Hello dear, adhesive remover OCA optical adhesive can go to the spring line to remove liquid uv deglue hydrosol agent. The degumming agent is made of a mixture of turpentine, pine perfume, 120 gasoline, kerosene, etc. The chemical composition consists of a travel chain:

Benzene, toluene, xylene, acetone, ethyl acetate, butyl acetate, ethanol, etc.

Hello dear, you can go to ** buy it.

Just go to the platform to buy it directly.

Good evening, UV glue cures after ultraviolet irradiation cures to form an acrylic-like polyacrylate structure, which can be soaked in strong solvents such as methylene chloride, chloroform or xylene for a period of time and then re-swollen and dissolved, if it is UV polyurethane or UV epoxy after cross-linking to form an insoluble and non-meltable three-dimensional structure, it can generally no longer be dissolved in organic solvents.

Sticky surface is the reason for incomplete curing, which is related to the power of the UV curing machine or the bulb. Appropriately increasing the ratio of initiator and curing agent to make it easy to generate heat, or increasing the temperature of the curing environment, will improve the problem of getting wet.

The grease, moisture, impurities and flatness on the surface of the bonded workpiece will directly affect the quality of the bonding, so be sure to dry and wipe it clean to ensure that the bonding surface is flat. During the bonding process, be sure to discharge possible air bubbles, during the light curing process, ensure that the adhered parts can be irradiated by UV lamps or sunlight, be sure to press the bonded workpiece, the thinner the adhesive lamination, the better the adhesion.

UV adhesive can be positioned in a few seconds and reach the highest strength in one minute, which greatly improves the work efficiency; After curing, it is completely transparent, and the stronger the UV rays, the faster the curing speed, and the general curing time varies from 10-60 seconds.

UV adhesive is also known as shadowless adhesive, photosensitive adhesive, ultraviolet curing adhesive, UV adhesive is a kind of adhesive that must be cured by ultraviolet light irradiation, it can be used as an adhesive, can also be used as a paint, coating, ink, etc.

In some industrial production, some workpieces may need to be repaired due to individual problems, and the UV glue that has been cured on the workpiece needs to be removed, and many friends may not know how to remove the cured UV glue.

There are two common ways on how to remove UV glue after it has cured:

1.If you need to use glue for temporary protection of the device, and you need to remove the glue after the protection is completed, you can choose the temporary protection UV peelable adhesive, including peel removal and hydrolysis removal.

2.If it is necessary to separate or remove the adherent material for rebonding due to poor bonding, depending on the specific glue and adherent, the methods that can be used include hair dryer heating, boiling, steam fumigation, acetone or ethanol soaking, or long-term water soaking.

How to solve the problem that the surface of UV glue is sticky after curing?

Dear, glad your question! In the different application industries of UV glue, the lamps used for UV glue light curing generally have high-pressure mercury lamps, low-pressure mercury lamps (ordinary ultraviolet lamps), LED lamps, and it is easy to cause the surface of UV glue to still be sticky after curing is the use of ordinary ultraviolet lamps, because of the low power of low-pressure mercury lamps, and also because UV glue curing has requirements for wavelength, in fact, there are also requirements for energy, so the solution is to extend the irradiation time or replace the ultraviolet lamps with high power. The oxygen inhibition effect refers to the oxygen in the air that inhibits the polymerization of free radicals generated by the curing process of the exposed UV adhesive, so that the monomer cannot be completely polymerized and cross-linked to form a complete state of solidified product.

Since the oxygen is only in contact with the surface of the UV glue, but not with the internal colloid, the internal colloid is cured, and the surface colloid is not cured. The solution is to add or replace the initiator, or if the process allows for nitrogen protection followed by light.