Acrylate pressure-sensitive adhesive for protecting lithium battery electrode material in processing process, adhesive tape and preparation method of adhesive tape

Abstract

The invention relates to the technical field of lithium battery protection adhesives, in particular to an acrylate pressure-sensitive adhesive for protecting a lithium battery electrode material in aprocessing process, an adhesive tape and a preparation method of the adhesive tape. The acrylate pressure-sensitive adhesive comprises the following components in parts by weight: 18-28 parts of 2-ethylhexyl acrylate, 8-10 parts of vinyl acetate, 8-10 parts of methyl methacrylate, 5-7 parts of n-octyl acrylate, 5-7 parts of acrylic acid, 8-15 parts of a KH570 silane coupling agent, 0.2-0.5 part ofan azodiisobutyronitrile initiator, 0.2-0.4 part of aziridine and 44-63 parts of a solvent.The acrylate pressure-sensitive adhesive has excellent high temperature resistance and viscosity retention and is easy to tear off quickly, can well protect the electrode material the production process of a lithium battery, meanwhile, improves production efficiency and economic benefits.

Description

technical field [0001] The invention relates to the technical field of lithium battery protective glue, in particular to an acrylate pressure-sensitive adhesive used to protect lithium battery electrode materials during processing, an adhesive tape and a preparation method thereof. Background technique [0002] As new energy vehicles gradually penetrate into social life, the output of new energy vehicles is also increasing day by day. The market has put forward new requirements and challenges for the improvement of the processing efficiency of new energy vehicle parts. Therefore, how to improve the main core components of new energy vehicles The production efficiency of a battery has also become an important factor in improving the competitiveness and economic benefits of new energy automobile companies. At present, electrode materials of lithium batteries need to be protected during the production process of batteries to avoid contamination or damage of electrode materials ...

AI Technical Summary

Problems solved by technology

At present, the electrode material is usually isolated and protected by wrapping tape around the electrode material, but since the processing of lithium batteries needs to be processed in a high temperature environment, there is a high requirement for the high temperature resistance of the tape

However, the adhesive tapes currently on the market for protecting electrode materials during lithium battery processing generally have the defect that high temperature resistance and rapid tearing performance cannot be combined.

If the high temperature resistance is not good, the electrode material cannot be completely protected during the processing of lithium batteries, and it is easy to degumming and expose the electrode material, resulting in a certain risk of damage or contamination of the electrode material, which in turn destroys the conductivity of the electrode material, resulting in residue. Defective products increase, production costs increase, and tapes that do not have quick tear-off will increase the difficulty of tearing off and increase time-consuming during processing, which will affect the improvement of production efficiency, and even because it is not easy to tear off, there may be residual glue. Existence, which in turn affects the conductivity of the electrode material and affects the quality of the product