What are the factors that affect the deep curing of adhesive sealants? Introduction to the factors affecting the deep curing of adhesive sealants

What are the factors that affect the deep curing of adhesive sealants? Introduction to the factors affecting the deep curing of adhesive sealants

Adhesive sealant is used in electronic products to seal, fix, fill and other functions, but to play its performance role, the colloid must be completely cured as a whole, and it is necessary to ensure that the adhesive sealant is normally and completely cured, then in its deep curing process, Some influencing factors need to be avoided. Today, Nuofeng NFION will analyze the factors that affect the deep curing of adhesive sealants.

Sizing humidity

The adhesive sealant described here is a one-component condensation type silicone adhesive sealant. Its curing process requires the condensation reaction of moisture in the air. If there is a lack of moisture or too low moisture, it will lead to a condensation reaction. The speed slows down, resulting in the inability to cure according to the required time. For example, at 55% humidity, the 24H deep curing thickness is 4-5mm. Since the on-site ambient humidity is only 30%, the curing depth will not reach 4-5mm. If glue is required The thickness is 4mm, which will lead to the failure of preliminary molding.

Sizing thickness

The curing process of silicone one-component adhesive sealant needs to go through several stages of surface drying, skinning, deep curing, initial overall curing, and complete curing. Under the same environmental conditions, the thicker the thickness of the glue, the more time it takes for the curing stage to complete. The longer it is, mainly the time required for deep curing. The thicker it is, the more difficult it is for the internal liquid glue to contact the air, and the duration of curing will be prolonged. Therefore, the same type of adhesive sealant is used in the same environment, and the thickness of the glue required is different. The curing time is also different.

Colloidal properties

Colloid properties, what we want to explain here is the curing speed or strength. Generally, the faster the surface drying speed, the stronger the curing strength of the adhesive sealant, the overall curing speed will be relatively fast, so generally choose fast curing silicone adhesive sealant When glue is used, it can be selected according to the surface drying time and the speed of skin formation.

Therefore, it is very important to understand the significance of deep curing of silicone one-component adhesive sealants, which can avoid and prevent the phenomenon that the internal colloid does not cure when the product reaches the end customer. As mentioned above, there are several key control times in the curing stage of the adhesive sealant. CoolThermo recommends that you go to www.coolthermo.com to learn more about it. CoolThermo focuses on the research and development and production of adhesives for the electronic industry, and can fully solve your adhesive needs.

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