PUR hot melt adhesive embodies those advantages in the electronic field

PUR hot-melt adhesive is a new type of one-component, solvent-free hot-melt structural adhesive, which is cured by moisture in the air and has excellent bonding strength and impact resistance after being completely cured, as well as excellent bonding. With the characteristics of strength, temperature resistance, chemical corrosion resistance and aging resistance, it has become the best adhesive for bonding mobile phones and other electronic industries in recent years.

 

PUR adhesive molecules react with moisture or active hydrogen substances in the air or on the adherend to form a partially cross-linked network structure, which makes the adhesive strength, chemical resistance, heat resistance, and hydrolysis resistance better than ordinary hot melt adhesives. The adhesiveness and toughness (elasticity) of PUR can be adjusted, and it has the thermoplastic cold-setting performance of ordinary hot-melt adhesives.

What are the outstanding advantages of PUR hot melt adhesives compared to other electronic glues, and why are they widely used in the field of electronic products?

1. PUR hot melt adhesive has strong adhesion and high strength after curing, which can meet the bonding requirements of most electronic products.

 

2. Compared with other electronic glues, PUR hot melt adhesive is easier to control the thickness of the glue, so it can meet the design requirements of the current narrow bezel mobile phone.

 

3. PUR hot melt adhesive belongs to thermoplastic polyurethane. It is easier to disassemble and repair products bonded with PUR hot melt adhesive.

 

The above three characteristics of PUR hot melt adhesive determine that PUR hot melt adhesive has more advantages in bonding in the field of electronic products than other glues.

How to use PUR hot melt adhesive:

1) Before using the PUR hot melt adhesive, after removing the outer packaging, you will find that there is a layer of aluminum foil inside. The function of this layer of aluminum foil is to prevent the PUR glue from contacting with the moisture in the air to prevent the glue from deteriorating. Do not tear off this layer of aluminum foil during the heating process, so as to play a certain protective role.

 

2) PUR hot melt adhesive is generally put in the PUR hot melt adhesive machine to complete the whole process of preheating, heating and dispensing. During preheating, keep the warm clothes at 90-110, keep the heating temperature at 120, do not exceed 130, if the temperature is too high, it may cause the hot melt adhesive to burst, so it is necessary to control the heating temperature, and the aluminum foil can also ensure the PUR heat The melt glue will not all explode and hurt the staff.

 

3) It is best to use up the heated PUR hot melt adhesive within 8 hours, otherwise it will affect the performance of the glue.

 

PUR hot melt adhesive has become the industry's first choice for bonding, sealing, lamination, connection, insulation, electronic protection and assembly. Specific applications include smart phone, tablet screen component assembly, learning machine, GPS navigator, wearable electronic device, window bonding, shell structure bonding, battery bonding, plane sealing, PCB assembly and protection, etc.

First of all, I would like to thank the R&D department for their efforts, writing this article, and your help is the biggest motivation for Purking in the hot melt adhesive industry.