Fluxing agent as well as preparation method and application thereof

A technology of flux and rosin, which is applied in the manufacture of fuses, electrical components, circuits, etc., can solve the problems of slow melting speed and non-disconnection of fusible alloy wires

Active Publication Date: 2010-06-30
上海神沃电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the organic amine hydrohalide in the above-mentioned flux plays a vital role in the activity of the flux. If it is missing...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-7

[0023] Weigh the rosin, organic acid and stearic acid amide according to the ratio in Table 1. After mixing the rosin and stearic acid amide, heat to melt, then add the organic acid and stir until the organic acid is dissolved. Just cool the resulting mixed liquid.

[0024] When the flux also contains a thixotropic agent, after the thixotropic agent is mixed with rosin and stearic acid amide, the mixture is heated to melt, and then the organic acid is added and stirred until the organic acid is dissolved. Just cool the resulting mixed liquid.

[0025] Table 1 Composition of flux (unit: wt%)

[0026] Example

[0027] Example

[0028] Comparative Experiment:

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PUM

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Abstract

The invention discloses a fluxing agent as well as a preparation method and application thereof. The fluxing agent comprises the following components in percentage by weight: 60-80 percent of rosin, 2-20 percent of organic acid and 10-30 percent of octadecanamide. The fluxing agent can be applied to temperature fuse elements to promote the fusing of a fusible ally wire. Compared with the prior art, the fluxing agent does not contain halogen and accords with the development tendency of environment protection. When applied to temperature fuse, the fluxing agent can achieve the effect of using a fluxing agent containing halogen.

Description

Technical field [0001] The invention relates to a flux, in particular to a halogen-free flux for thermal fuse. Background technique [0002] People are paying more and more attention to the safety of electronic and electrical equipment, requiring these equipment to be equipped with over-temperature and over-current protection devices. At present, thermal fuse is a commonly used over-temperature protection component. [0003] The main part of the thermal fuse is a fusible alloy wire. When the ambient temperature rises to the melting point of the fusible alloy, the fusible alloy wire is melted and disconnected, thereby cutting off the circuit to protect the electrical appliance. Therefore, whether the melting of the fusible alloy wire can be completely disconnected in time is the key technology of the thermal fuse. In order to improve the fusibility of the fusible alloy wire, the usual practice is to wrap the flux around the fusible alloy wire. The main component of the flux is ro...

Claims

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Application Information

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IPC IPC(8): H01H85/06H01H69/02
Inventor 周欣山宋华傅坚李凯
Owner 上海神沃电子有限公司
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