Alcohol-soluble polyurethane adhesive is a polyurethane adhesive developed in recent years with ethanol as the solvent. Although the alcohol-soluble polyurethane adhesive has the advantages of free isocyanate-free monomer, lower production cost and other environmental protection advantages, alcohol-soluble polyurethane The development of the adhesive is not optimistic because although the alcohol-soluble polyurethane adhesive has taken a step forward in environmental protection, it is not strictly an environmental-friendly adhesive because ethanol is also an organic solvent.
Waterborne polyurethane adhesives are non-flammable, non-toxic, environmentally friendly, and have wide applicability. Therefore, although waterborne polyurethane adhesives have a certain amount of room for development, due to cost and energy consumption, they cannot replace esters in the next 10 years. Polyurethane adhesives.
Solvent-free polyurethane adhesive: After 10 years, it will be greatly developed. The solvent-free polyurethane adhesive is the truly environmentally-friendly adhesive. Nowadays, solvent-free adhesives have been widely used abroad. It has the following advantages. Solvent-free polyurethane adhesives are suitable for all types of plastic composite packaging. They also have a good adhesive effect for aluminum foils. The resistance to high content and high temperature cooking performance can also be the same as those of ester-soluble polyurethane adhesives with high peel strength.
In summary, in the next 10 years, alcohol-soluble polyurethane adhesives will not be developed, water-based polyurethane adhesives still cannot compete with ester-soluble polyurethane adhesives; after 10 years, ester-soluble polyurethane adhesives will gradually reduce, Adhesives have a certain space for development, and solvent-free polyurethane adhesives will gradually be widely promoted in China.
Source: Glue Online
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