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Causes of yellowing of light touch switch

Release time:2018-10-19    Clicks: Click

 
When the touch switch is used for a long time, it may cause yellowing. What is the reason? The following details are introduced to you.
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Light touch switch is widely used in life, and many manufacturers, some customers reflect, light touch switch in the furnace or after reflow soldering why will become yellow, the following to do some details of this problem.
Will cause light touch switch yellowing after reflow welding is mostly used 6T plastic, because 6T plastic material itself on the simple absorption of water, if the plastic absorption of water contrast is small, the estimation button after heating is not very significant, but if the absorption of water is more than the color is very obvious but on the button The function of the key itself and the number of lives are not affected, because the change is just the appearance color of the button. Many customers mistakenly assume that the button is not heat-resistant, which is not true. If it is not heat-resistant, the performance of the plastic base will be deformed or plastic base melting and deformed fragments and other symptoms. If the customer is still worried that such a situation will affect the quality of the light touch switch, the customer is advised to choose LCP material. Because the LCP material is relatively brittle, it is difficult to absorb moisture so that after reflow soldering, it will not touch the switch to discolor this phenomenon.
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