Method for controlling stress distribution in material and reading stress information
申请人:ZHEJIANG UNIVERSITY
公开号:US10685200B2
公开(公告)日:2020-06-16
The invention relates to a method for controlling the stress distribution in a material, comprising the steps of: a, preparing a crosslinked polymer containing reversible exchange bonds; b, applying an external force to the crosslinked polymer to cause a certain strain; c, specific region of the crosslinked polymer is selectively heated while maintaining the strain. This method controls and utilizes the internal stresses which are commonly considered as unfavorable. The invention also provides a method for reading information in a polarized light field, wherein the crosslinked polymer treated by the method is transparent under natural light. The information therein can be read only under polarized light, and possesses concealment.
本发明涉及一种控制材料应力分布的方法,包括以下步骤:a, 制备含有可逆交换键的交联聚合物;b, 对交联聚合物施加外力,使其产生一定的应变;c, 在保持应变的同时,选择性地加热交联聚合物的特定区域。这种方法可以控制和利用通常被认为不利的内应力。本发明还提供了一种在偏振光场中读取信息的方法,其中经该方法处理的交联聚合物在自然光下是透明的。其中的信息只能在偏振光下读取,具有隐蔽性。