What kind of adhesive is used for sealing lead-acid batteries?
2023-04-23
Hello, storage batteries can be classified according to their encapsulation methods into heat-sealed, glue-sealed, and asphalt-sealed types. Most automotive batteries are heat-sealed, while most electric vehicle batteries are glue-sealed. For lead-acid storage batteries, epoxy resin adhesives specifically designed for batteries are typically used to seal the terminals.
Epoxy resin is a high‑molecular polymer with the molecular formula (C11H12O3)n, serving as a general term for a class of polymers that contain two or more epoxy groups in their molecular structure. It is a condensation product of epichlorohydrin and bisphenol A or polyols. Due to the chemical reactivity of the epoxy group, it can be ring‑opened by various compounds containing active hydrogen, undergoing curing and crosslinking to form a network structure; therefore, it is a thermosetting resin. Bisphenol A–type epoxy resins not only boast the highest production volume and the most comprehensive range of varieties, but new modified formulations are continually being developed, and their quality is steadily improving.
Epoxy resins possess superior physical, mechanical, and electrical insulation properties, excellent adhesion to a wide variety of materials, and remarkable flexibility in processing—qualities that are unmatched by other thermosetting plastics. As a result, they can be formulated into coatings, composite materials, casting compounds, adhesives, molding compounds, and injection-molded products, finding extensive applications across all sectors of the national economy.
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We are a source manufacturer with export qualifications, specializing in the production and sale of lead-acid battery sealing compounds and terminal paste.
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