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Modified acrylate glue (AB glue) FAQ

1. When the modified acrylic adhesive is used, is it necessary to mix evenly according to the weight ratio of A: B component 1:1 in order to bond?
A: The density of A and B components of modified acrylic glue is basically the same. When used, the volume of A and B components can be roughly the same with the naked eye. There is no need for strict measurement. Mixing as long as the two glue liquid basic mixed together can be.


2. The surface of two objects is smooth. When pasting with modified acrylic adhesive, does the surface of the bonded object need to be polished? Is there oil on the surface of the adhesive material unable to be directly bonded?
Answer: When the surface of two objects is very smooth using modified acrylic adhesive, there is no need to grind into a rough surface, as long as there is no dust and dirt can be directly coated and bonded. If the object has a slight oil, a simple wipe can be used for bonding operation. When the oil is more serious, it is necessary to clean up and polish a little, and it is not necessary to use solvent degreasing treatment.


3. How to operate when a large area of glue or a large amount of glue is needed for the bonded object? Sometimes after the mixture of glue liquid in place for a period of time smoking situation is what reason?
Answer: When large area gluing or gluing amount is large, it is not suitable to mix a large amount of glue at one time. It should be mixed several times and coated separately, or coated with different components of glue on both sides respectively, and then superposition and rub to complete large area bonding.
Modified acrylate adhesive is A reactive adhesive, A, B two components after mixing curing reaction is an exothermic reaction, if the amount of adhesive mixing is too much, the adhesive layer is too thick, the heat can not be emitted when the reaction, the temperature to a certain extent will occur smoke, serious fire may occur.


4, modified acrylic glue when using some smell, in addition to careless operation may be exposed to the hand or skin, whether these conditions are harmful to human health.
A: When modified acrylic glue is used, there will be a certain odor, which is caused by the odor of methyl methacrylate component in the glue solution, which is less toxic. But for bonding operation, it is best to maintain a good ventilation environment in the workplace. In addition, if the skin accidentally stuck to the glue, should be immediately washed with soapy water. Modified acrylic glue should be stored out of reach of children, remember not to enter.


5, with modified acrylic adhesive bonded items, whether can be used in water or humid environment for a long time?
A: The modified acrylate adhesive has the characteristics of high bonding strength and fast curing speed. But the water resistance of this kind of glue is poor, if long-term use in water or humid environment will occur shedding phenomenon. To this end, in the water or wet environment using modified acrylic adhesive bonding items, must be in the outside of the rubber layer with glass glue for sealing treatment, in order to play their advantages, overcome their shortcomings. That is, the better strength of modified acrylic glue, play the role of structural glue; Glass glue has better elasticity and tightness, not afraid of water and humidity.


6, modified acrylic glue storage should pay attention to what problems?
A: Modified acrylic glue is flammable, storage should be away from fire and should be stored in a cool and ventilated place, can not be placed in high temperature and heat or direct sunlight occasions. In addition, after use, can not be A, B two components of the rubber tube cap wrong, so as to avoid the glue curing.


7, the use of modified acrylic adhesive parts, how to want to disassemble the adhesive parts, with what way to disassemble.
Answer: After curing modified acrylic glue, using acetone, tetrahydrofuran, toluene and other solvents, soaking for more than 10h, the adhesive layer can fall off. If it is an iron part, you can use a hammer to strike the adhesive part in the shearing direction, or the adhesive layer can be separated by softening at a high temperature above 120℃.


8. When the modified acrylic glue is used for bonding, the mixed glue will draw wire. Will the bonding effect be affected?
Answer: When modified acrylic glue is used, A and B components cure faster after mixing, so it should not be mixed too much at a time. If the glue appears obvious curing, drawing phenomenon, do not use, so as not to affect the bonding strength.


9, the use of modified acrylic glue for bonding operation, sometimes found that the curing speed is slow, what is the reason?
Answer: May be due to the glue liquid quality is too long, or the operating site temperature is too low caused by. In addition, if the amount of A, B two components of gum is too large, it may also cause this phenomenon.


10. Can AB glue stick to copper?
A: No. AB glue will react with copper and fall off automatically.


11. Can AB glue fix screws?
A: After glue quickly twist, can be fixed.


12, a user reflects that 80g specification of 302 glue, still two months before the shelf life, found that the B component has become thick, ask whether there is a quality problem? If it is not a quality problem, why does this happen?
Answer: From the appearance, the cardboard color of these several pieces of glue has obvious signs of fading color, should be the result of direct sunlight. According to the analysis, these sheets of glue should be after a certain time of direct sunlight, leading to the deterioration of component B, gradually thickened. AB glue instructions clearly point out that the product is not in direct sunlight, so in the process of transportation and storage must pay attention to this point, in the retail counter display of glue is no exception.


13. A customer uses AB adhesive to bond steel plate, which has been very good in the past. Recently, 80g and 20g specifications have been newly imported. It is thought that there is a quality problem with the large packages of glue.
Answer: After inquiry, the user glued the iron plate area is 370mm×500mm, the area is large, each time will be mixed with several pieces of AB glue, and then coated with adhesive. Explain to it, the product should not be a large amount of mixing, because if the mixing amount is large, the glue has not been coated, the chemical reaction has begun, the internal crosslinking, at this time for bonding, will seriously affect the bonding strength. Use should be according to the product manual operation, how much to use, how much to mix, do not be afraid of trouble.


14, a user with 80 grams of specification AB adhesive aluminum sheet, stick for about half an hour, with the hand to break, strength, can not be opened. But the next day, he opened it with his hands. What is the reason?
A: After viewing the photos, the color of the adhesive aluminum sheet mentioned by the user is abnormal, and the surface has the yellow color of copper. After the user to purchase the aluminum sheet to confirm that the surface of the aluminum sheet has a layer of copper plating, and AB glue can not stick to copper.


15, the user has a pet dog at home, ears are too crooked, can not stand up, want to use 302 to stick, is it OK?
Answer: No, it won't stick.


16, whether AB glue can be used to stick dentures?
Answer: It can't stick. It won't stick.


17, the user asked: 302 bonding small decorations into the aquarium, will not dissolve, will not release toxic substances and kill the fish? What is the bonding effect (no bearing)?
A: 302 glue is similar to hard plastic sheet after full curing, insoluble in water, is actually non-toxic grade, will not cause any harm to the human body, the environment, and has been RoHS testing, does not contain heavy metals and other toxic substances. However, its bonding property will be reduced by the influence of water until it falls off automatically.


18, user consultation: summer temperature is too high, curing too fast, can slow down the curing speed?
Answer: If the bonding strength requirements are not too high, there are two methods: 1, AB component respectively coated in the two bonding surface, and then the two sides pressed together, rather than the traditional usage, the AB component mixed before use. 2, reduce the amount of component B, because B is the curing agent, reduce can delay the curing speed. But the amount of component B should not be less than half of A, or it will not stick firmly.


19, the customer with AB adhesive stainless steel floor drain, unglued, asked what is the reason.
Answer: After inquiry, the customer is not fully cured on the use of immersion. Under normal circumstances, AB glue must be cured for 24h before it can be immersed in water, otherwise it is easy to ungel.


20. Can AB glue glue aluminum and ABS together? What is the shelf life after curing? Can you put a kilo of pressure on it?
A: Yes, AB adhesive bonding aluminum and ABS effect is better. After curing, there is no problem if used at room temperature and dry conditions. It's not a lot of pressure to add one kilogram. It's basically okay.


21, is AB glue toxic after curing? Is it OK to stick a toy to the entrance? In addition, does it still smell after curing? Can it be used in dentistry?
A: It is theoretically non-toxic after curing, but is not recommended for ingested materials. No odor after curing, should not be used in dentistry.


22, with AB glue will be small iron stick on the glass plate, the initial strength can be, with a use is easy to open the glue, ask what is the reason? How to solve it.
Answer: AB adhesive to glass bonding effect is not good, only the initial bonding strength, long time will slowly fall off. You can use Brother Good 851 environment-friendly nail free adhesive to bond.


23, AB glue plugging, the hole is too small, the glue can not flow into, excuse me with what dilution? It was diluted with acetone before.
A: AB glue is a reactive product, in principle can not be diluted, otherwise it will lead to no curing or strength greatly reduced. If you want to dilute, you can use MMA, but after diluting the ratio change, strength, toughness and so on can not be guaranteed.


24, with AB adhesive a small object, the result sticks to the hand, how to remove, will the opponent produce corrosion damage?
Answer: No corrosion damage to hands. Clean with your nails first, as much as you can get rid of, and don't bother with the rest. Slowly wash your hands a few times and it will come off.


25, AB stick a plastic lid, can not stick on, why?
Answer: The cup material may be polypropylene material, which belongs to the bonding range of AB glue is not applicable.


26, customer feedback AB adhesive similar to brake pad metal material, adhesive after opening, showing green.
A: Observe the photo, the adhesive material has the color of copper, and part of it has turned green. Communicate with the user to confirm that the adhesive metal material contains copper. Explain to the customer: AB glue cannot be bonded to copper and materials containing copper. It can be bonded with transparent epoxy adhesive.