How to use epoxy resin and matters needing attention

Reading Volume：【 2076 】

Time：【 2018-12-23 】

Epoxy resin glue is a kind of adhesive, it can be cured quickly, generally there are three colors, white, black, gray, its main raw material is epoxy resin, of course, when using epoxy resin glue, There must also be a curing process, so a curing agent must be used. The curing speed of this type of adhesive is very fast, the bonding effect is also very good, and it can have a good waterproof effect after bonding. It can also be used in a high temperature environment. If it is placed at 180 to 200 degrees At high temperatures, it can be placed for at least 20 minutes, so its performance is still relatively good. The following is an introduction to the use of epoxy resin glue.
Precautions for epoxy glue
When using epoxy resin glue, you need to first understand its instructions. The first aspect is that its basic characteristics glue is divided into two groups, so it needs to be mixed when using it. In this way, a larger gap can also be used. Is filled up. The second is its operating environment. Under normal circumstances, the glue will solidify at normal indoor temperatures. In the mixing operation of the two glues, you can directly mix them by hand, or you can use some professional equipment, such as glue guns.
You also need to pay attention to the temperature of the surrounding environment when using it. The best temperature is between minus 50 degrees Celsius and 150 degrees Celsius. Epoxy resin glue can be used in general normal environment, it can be waterproof, and it can also prevent some strong corrosive substances, such as strong acid and strong alkali. When storing epoxy resin glue, there are some necessary precautions. It cannot accept direct sunlight, so a cool place is the best environment for storage. Generally, the storage time of this glue has a certain period of time, more than 12 It can't be used after a month.
When using epoxy resin glue, we follow certain steps, and there will be some precautions, which we must understand. When using, the first thing to do is to clean the surface of the object to be bonded. After the initial wiping, use some cleaning agent for a second wiping to achieve the purpose of adequate cleaning.
Then open the glue and mix the two glues a and b at a ratio of 2:1. The glue cures quickly, so it must be used in time when the glue can be bonded. After 24 hours of bonding, it can be reached. The best effect of bonding. After the glue is applied, there needs to be a curing process. If it is a normal temperature environment, curing for 2 to 6 hours is enough. If the temperature can reach 40 to 50 degrees, the curing time is 1 to 3 hours. , The best bonding effect can be achieved on the tenth day after bonding.
How to use epoxy resin glue:
Polyacid-modified epoxy acrylate is mixed with 1 part A and 1 part B respectively and stirred evenly.
2. Coat the glue after mixing the agent on the bonding surface.
3. The glued articles must not be shifted or moved for at least 40 minutes, otherwise the bisphenol A epoxy resin will seriously affect the bonding effect.
4. The aliphatic polyurethane acrylate glued adhesive products can only be used normally after at least 20 minutes, otherwise the curing effect and bonding life of polyester acrylate will be affected.
The classification of epoxy resin adhesives is divided into the following methods in the industry:
1. According to its main composition, it is divided into pure epoxy resin adhesive and modified epoxy resin adhesive;
2. According to its professional use, it is divided into epoxy resin adhesives for machinery, epoxy resin adhesives for construction, epoxy resin adhesives for electronic eyes, epoxy resin adhesives for repairs, and adhesives for traffic and ships. Glue etc.;
3. According to its construction conditions, it is divided into normal temperature curing glue, low temperature curing glue and other curing glue;
4. According to its packaging form, it can be divided into single-component glue, two-component glue and multi-component glue, etc.;
There are other classification methods, such as solvent-free glue, solvent-based glue and water-based glue. However, there are many applications based on component classification.
Characteristics of epoxy resin glue
1. Basic characteristics: two-component glue, which needs to be mixed with AB, has strong versatility and can fill larger gaps;
Operating environment: curing at room temperature, both indoors and outdoors, can be mixed manually or use special equipment for AB glue (such as AB glue gun).
3. The applicable temperature is generally between -50 and +150 degrees.
4. Suitable for general environment, waterproof, oil resistance, strong acid and alkali resistance, placed in a cool place away from direct sunlight, the shelf life is 12 months<

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