Mechanisms of Static Charge Generation

Many mechanisms can lead to the formation of static charges. The following are some common mechanisms. Any one of these mechanisms can lead to static charging on polymer fibers, but in matty cases, more than one mechanism may work together to generate static charges. 

The contact-induced charge separation does not directly involve relative motion of the two contact materials. However, motion certainly can enhance the formation of static charges. In many cases, robbing two polymer fibers produce temperature gradients. Hot spots often develop due to the friction effect, and charges can move from hot spot to cold surrounding area. 

Like stress or strairr, heating also can generate a separation of charges in polymer fibers. This is so-called heat-induced charge separation (i.e., pyroelectric effect). The atomic or molectrlar properties of heatandpressine resportse are closely related. Therefore, heat-induced charge separation also is a mechanism that is 

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