Environmentally friendly water-based phenolic resin for speaker springs

Abstract

The invention discloses an environmentally friendly water-based phenolic resin used for loudspeaker elastic waves, which is characterized in that the weight ratio of raw materials is as follows: 73.8-75% of phenolic resin, 1-5% of phenol, 0.5-1.5% of m-hydroxybenzyl alcohol, Oleic acid 0.5-1.5%, water 18.7-20%, sodium hydroxide 0.5-1.5%. The optimal formula of the above raw materials is 73.8% of phenolic resin, 3.6% of phenol, 1.4% of m-hydroxybenzyl alcohol, 1.3% of oleic acid, 18.7% of water and 1.2% of sodium hydroxide. The invention has the advantages of high strength, good temperature resistance, improved elastic wave performance index, no volatile harmful substances, environmental protection and no volatile odor.

Description

technical field [0001] The invention relates to the technical field of loudspeaker elastic wave production, in particular to an environmentally friendly water-based phenolic resin used for loudspeaker elastic waves. Background technique [0002] The center position of the voice coil is fixed by the elastic wave of the speaker. The commonly used materials are cotton cloth, blended chemical fiber, natural fiber, etc., which are generally impregnated with phenolic resin alcohol solution and then hot-pressed, except for the weaving method of the cloth, the warp and weft density, and the hot-pressing temperature and time of forming. Etc., the dipping concentration will also have a great influence on the strength, compliance and fatigue resistance of the elastic wave; the existing dipping phenolic resin still needs to be improved in terms of environmental protection and volatility. Contents of the invention [0003] The object of the present invention is to provide a water-based...

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Problems solved by technology

[0002] The center position of the voice coil is fixed by the elastic wave of the speaker. The commonly used materials are cotton cloth, blended chemical fiber, natural fiber, etc., which are generally impregnated with phenolic resin alcohol solution and then hot-pressed, except for the weaving method of the cloth, the warp and weft density, and the hot-pressing temperature and time of forming. Etc., the dipping concentration will also have a great influence on the strength, compliance and fatigue resistance of the elastic wave; the existing dipping phenolic resin still needs to be improved in terms of environmental protection and volatility.

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