Assessment method for anti-pollution capability of dustproof net of mobile phone

Abstract

The invention discloses an assessment method for the anti-pollution capability of a dustproof net of a mobile phone and belongs to the technical field of engineering materials. The assessment method comprises the following steps of firstly, establishing an assessment scheme, i.e., establishing a dustproof net parameter assessment scheme by analyzing structural parameters and coating parameters of the dustproof net of the mobile phone to be assessed; determining an experiment control group and the quantity of samples required by the experiment according to specific characteristic parameters of samples to be assessed; secondly, implementing pollution simulation experiments including an oil mist evaporation and deposition experiment and a grease coating and adhering experiment; finally, assessing the anti-pollution capability through acoustic resistance detection. According to the assessment method, on the basis of a pollutant deposition principle and aiming at specific parameters of the dustproof net, an assessment system for the anti-pollution capability of the dustproof net can be effectively and accurately established.

Description

technical field [0001] The invention relates to a method for evaluating and testing the anti-pollution ability of a mobile phone dust-proof net, and belongs to the technical field of engineering materials. Background technique [0002] The intrusion of dust particles and pollutants from the working environment will seriously affect the electrical contact reliability of the electrical connection inside the mobile phone. At present, acoustic dust filters are usually used as protective measures for mobile phone earpieces and speakers. The protection requirements meet the requirements of the national standard GB4208-2008. The protection of mobile phones is generally IP55-IP57, that is, the dust-proof net can prevent the entry of larger particles (with a particle size of 50 μm-1000 μm) in the environment and has good hydrophobicity. However, during use, the earpiece is in contact with the skin for a long time, and whether it is the open structure of the earpiece or the hole stru...

AI Technical Summary

Problems solved by technology

However, during use, the earpiece is in contact with the skin for a long time, and whether it is the open structure of the earpiece or the hole structure of the dust filter, it is easy to form the adhesion and accumulation of pollutants. In addition, there are magnetic components in the audio design and high environmental Concentration pollution, the accumulation of organic pollutants will inevitably form on the acoustic dust-proof net and blockage. After a large amount of organic pollutants accumulate, they will spread to the inside through the dust-proof net, increasing the risk of electrical connection failure and reducing the overall reliability of the mobile phone.

However, there is currently no method for accurately and efficiently evaluating the anti-pollution ability of mobile phone dust-proof nets.

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