Sintered silver colloid material and preparation method thereof

By preparing sintered silver glue materials containing components A and B, and sintering under low temperature and pressure-free conditions, the problem of difficult pressure-free silver glue forming a dense sintered structure is solved, and the high mechanical properties and stability of sintered silver glue materials are achieved.

CN119662174APending Publication Date: 2025-03-21HUNAN CHUANGJIN TECH CO LTD
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Patent Information

Application Number
CN202411911151.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-24
Publication Date
2025-03-21

AI Technical Summary

Technical Problem

Pressure-free silver glue is difficult to form a dense sintered structure, which affects its mechanical properties, resulting in easy interface layering after aging test or impact test, resulting in failure of bonding and electrical connections.

Method used

By preparing sintered silver glue material including components A and components B, component A consists of silver powder filler, resin, modified PVB and diluent, component B consists of aromatic amine curing agent and accelerator, sintered under low temperature and pressure-free conditions to ensure the mechanical properties of the silver glue after sintering.

Benefits of technology

The sintered silver glue material sintered under low temperature and pressure-free conditions has good mechanical properties, high shear strength, low volume resistivity, and remains stable after aging and impact tests.

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Abstract

The invention provides a sintered elargol material and a preparation method thereof, and relates to the technical field of elargol, the sintered elargol material comprises a component A and a component B, the component A comprises the following preparation raw materials in parts by mass: 100 parts of silver powder filler, 5-13 parts of resin, 3-8 parts of modified PVB (Polyvinyl Butyral) and 0.2-2 parts of diluent; the component B comprises 100 parts of an aromatic amine curing agent and 0.1-1 part of an accelerant; the modified PVB is prepared from PVB and a modifier. The preparation method of the sintered silver colloid material comprises the following steps: S1, mixing flake silver powder, resin, an accelerant and a diluent to obtain a first mixture; s2, grinding the modified PVB and particle silver powder to obtain a second mixture; s3, mixing the first mixture and the second mixture, and filtering to obtain the component A. The sintered silver colloid material prepared by the invention has excellent stability and mechanical properties.
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