Hyperbranched polymer pressure-sensitive adhesive as well as preparation method and application thereof

Abstract

The invention provides a hyperbranched polymer pressure-sensitive adhesive and a preparation method and application thereof.The hyperbranched polymer pressure-sensitive adhesive is obtained by taking lipoic acid, agarose and a multi-double-bond compound as monomers, mixing the lipoic acid, the agarose and the multi-double-bond compound, jointly heating the mixture to 80-100 DEG C, continuously reacting for 2-4 h and then cooling. The polymer pressure-sensitive adhesive can maintain high-strength adhesion in dry, wet, low-temperature and dust environments.

Description

technical field [0001] The invention relates to the field of polymer materials, and more particularly to a hyperbranched polymer pressure-sensitive adhesive and a preparation method and application thereof. Background technique [0002] Elastomer is a three-dimensional network composed of high molecular polymers. The interior of the elastomer does not contain any solvent, so it will not become hard and brittle due to solvent volatilization when placed in the air. Some elastomers have good biocompatibility and other excellent properties, such as: environmental responsiveness, antibacterial properties, self-healing properties, adhesion, stretchability, etc. These characteristics make elastomers have broad application prospects in biomedicine, sensors, and self-healing materials. [0003] Adhesives are very important in daily life, work and medicine, especially immediate wet adhesion is essential for hemostasis, wound healing, replacement of surgical sutures and medical conduc...

AI Technical Summary

Problems solved by technology

However, traditional adhesives can only adhere to dry substrates in the air. When there is water on the surface of the substrate, its adhesion performance will be reduced or even disappear.

And many adhesives that have been reported require a certain curing time when adhering to the substrate, which will limit the practical application of the adhesive.

Pressure-sensitive adhesives have the advantage of being easy to use and can achieve immediate adhesion, but traditional pressure-sensitive adhesives can only achieve adhesion to dry and clean interfaces, but truly dry and clean interfaces are very rare in life, so , it is very important to develop a method that can achieve immediate tough adhesion to wet substrates and dust-coated surfaces.

In industrial production, in many cases, it is necessary to adhere in a low temperature environment, and most of the adhesives reported so far will lose their adhesiveness when the temperature is relatively low, and due to lowering the temperature, the bulk of the adhesive will change. Brittleness is also not conducive to achieving high-strength adhesion, so adhesives that can maintain high-strength adhesion in low temperature environments are also very important

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