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Gleihow New Materials Co., Ltd.

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302 modified acrylate adhesive (AB glue)

 

1. When 302 modified acrylate adhesive is used, is it necessary to mix uniformly according to the weight ratio of component A: B 1:1 to carry out bonding?
A: the density of a and B components of modified acrylate adhesive is basically the same. When using it, the volume of a and B components can be observed by naked eyes. It is not necessary to measure strictly. When stirring, as long as the two glue liquid are basically mixed together.


2. The surface of the two objects is relatively smooth. When the modified acrylate adhesive is used to paste, does the surface of the bonded object need to be polished? If there is oil stain on the surface of the adhered object, can't it be directly bonded?
A: when two objects are smooth, it is not necessary to grind them into rough surfaces when using modified acrylate adhesive. As long as there is no dust and dirt, the adhesive can be applied directly. If the object is slightly greasy, a simple wipe can be used for bonding. When the oil pollution is serious, it is necessary to clean up and polish a little, and it is not necessary to use solvent for degreasing treatment.


3. How to operate when a large area of gluing or a large amount of gluing is needed for the bonded objects? What is the reason for the smoke of the mixed glue after being placed for a period of time?
Answer: when large area is coated with glue or the amount of glue is large, it is not suitable to mix a large amount of glue solution at one time. Instead, it should be mixed in several times and coated separately with different components of glue solution on both sides, and then carry out the superposition rubbing method to complete the large-area bonding.
The modified acrylate adhesive belongs to reactive adhesive. The curing reaction of a and B components after mixing is exothermic. If the amount of adhesive mixed is too much and the adhesive layer is too thick, the heat can not be emitted during the reaction. When the temperature reaches a certain degree, smoke will occur, and fire may occur in serious cases.


4. The modified acrylate adhesive has some smell when it is used. In addition, it may contact hands or skin if it is not handled carefully. Whether these conditions are harmful to human health.
A: when the modified acrylate adhesive is used, there will be a certain smell, which is caused by the odor of methyl methacrylate component in the adhesive solution. However, this odor is less toxic, but it is better to keep a good ventilation environment in the workplace during the bonding operation. In addition, if the skin is not careful to stick the glue, should immediately wash with soap water. The modified acrylate adhesive should be kept out of the reach of children and should not be imported.


5. Can the articles bonded with modified acrylate adhesive be used for a long time in the environment containing water or humidity?
A: the modified acrylate adhesive has the characteristics of high bonding strength and fast curing speed. However, the water resistance of the adhesive is poor. If it is used in water or humid environment for a long time, it will fall off. Therefore, when using modified acrylate adhesive in water or humid environment, it is necessary to seal with glass glue outside the adhesive layer, so as to give full play to their advantages and overcome their shortcomings. In other words, the modified acrylate adhesive has better strength and plays the role of structural adhesive; the glass adhesive has good elasticity and sealing property, and is not afraid of water and moisture.