What are the precautions of waterborne polyurethane adhesive?
The use of water-based polyurethane adhesive can play a very good bonding effect, but some matters need to be paid attention to in use to ensure quality and safety. The following are several precautions for the correct use of waterborne polyurethane glue:
The use of water-based polyurethane adhesive can play a very good bonding effect, but some matters need to be paid attention to in use to ensure quality and safety. The following are several precautions for the correct use of waterborne polyurethane glue:
Before use, it is necessary to ensure that the bonding surface is clean and free of impurities such as oil or dust. In use should be appropriate amount of extrusion glue, do not squeeze more, in order to avoid affecting the bonding effect. Apply the glue evenly on the surface to be glued, without the formation of cavities and bubbles. Use should pay attention to the temperature, should not be used in less than 5 ℃ or higher than 40 ℃ environment. The glue needs to be stored in a dry and cool place, away from direct sunlight. When using, you need to pay attention to safety and avoid direct contact with skin and eyes to cause discomfort. The use of water-based polyurethane glue requires careful and careful observation to ensure quality and safety in order to play a better role.
Waterborne polyurethane adhesive is a kind of one-component water-based adhesive, with quick drying, high strength and excellent bonding performance, no organic volatiles, environmental protection, safety, easy to clean, is a new type of environmental protection glue.
Waterborne polyurethane adhesive is mainly used in home decoration, furniture manufacturing, car maintenance and other fields, can be bonded to a variety of materials, such as paper, cloth, wood, ceramics, metal and so on.
Because the water-based polyurethane adhesive does not contain organic volatiles, it needs to be stored in a shading, dry, ventilated and waterproof environment. When placed, it should be placed vertically as far as possible, and should not be inverted or placed improperly.
When using water-based polyurethane glue, you need to pinch the bottle mouth by hand to avoid pressing the glue on the side of the glue bottle during extrusion. Pay attention to the amount of glue and the uniformity of coating during use.
Waterborne polyurethane adhesive in the storage process need to avoid exposure to the sun, the storage temperature should be between 5 ℃-35 ℃, to avoid alternating hot and cold storage, while avoiding repeated vibration.
If there is a bad situation when using water-based polyurethane glue, it can be repaired and replaced within 24 hours of bonding. Do not repair after the glue is dry.
In short, when using water-based polyurethane glue, it is necessary to pay attention to safety, hygiene, uniform coating, and avoid excessive use to ensure the final bonding effect.
Waterborne polyurethane adhesive is a new type of environmentally friendly adhesive, compared with the traditional solvent-based polyurethane adhesive, has unique characteristics.
1. Low volatility. It does not contain organic solvents, has low volatility, and will not cause harm to the environment and human body.
2. Strong water resistance. It has excellent water resistance and maintains adhesion even after moisture.
3. Coatable type. It can be applied directly like a paint, without the use of any other tools.
4. Good environmental protection. It does not contain organic solvents, non-toxic, tasteless, non-polluting, in line with environmental requirements.
5. Strong adhesion. Waterborne polyurethane adhesives have high adhesion and can achieve strong adhesion on a variety of different materials.
In summary, waterborne polyurethane adhesives have unique characteristics such as low volatility, strong water resistance, coatable, good environmental protection, and strong adhesion, so they have been widely used in various industries.
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