The characteristics of polyurethane adhesives

2025,10,30

Polyurethane adhesives stand out among numerous adhesives with their outstanding bonding performance. Its unique molecular structure and chemical properties endow it with excellent elasticity, water resistance, chemical corrosion resistance and good low-temperature resistance. In addition, polyurethane adhesives, due to the active groups in their chemical structure, have the ability to widely bond various materials and are a type of highly versatile adhesive.

Polyurethane adhesives maintain good strength at extremely low temperatures, significantly outperforming traditional materials. When the temperature drops to extremely low levels, many polymer materials will become fragile and brittle as they transform into a glassy state. However, polyurethane adhesives can still maintain excellent peel strength in harsh environments below -250℃, and their shear strength will significantly increase as the temperature further decreases.

Polyurethane adhesives replace traditional adhesives, enhancing environmental performance and meeting the demands of sustainable development. In view of the continuous reduction of global forest resources and the advancement of China's natural forest resources protection project, the technology of small wood splicing large boards has put forward more stringent requirements for the bonding strength, durability and weather resistance of adhesives.

Optimize environmental friendliness and weather resistance to provide reliable bonding for shoe materials and flexible packaging. With the increasing global environmental awareness and the continuous intensification of the oil crisis, the fourth generation of environmentally friendly solvent-free and water-based shoe adhesives has emerged.

Polyurethane adhesives offer durability in construction and enhance environmental friendliness and printing quality in inks. Polyurethane adhesives are not only non-toxic, pollution-free and easy to use, but also have excellent low-temperature resistance, solvent resistance, aging resistance, ozone resistance and bacterial resistance.

Polyurethane hot melt adhesive reduces costs and enhances performance, and is widely used. In recent years, the application of hot melt adhesives has gradually become mainstream. Among them, polyurethane hot melt adhesives have occupied a certain share in the market due to their excellent adhesion and elasticity.

Author:

Ms. Cherry

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348754229@qq.com

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