3results about How to "Small dimensional change rate" patented technology

This invention relates to the field of preparation method technology and discloses a method for preparing a low-density nylon foam material. The method includes selecting nylon resin as the matrix material, wherein the nylon resin is a blend of PA6 and amorphous nylon PA610 in a specific ratio, wherein the mass ratio of PA6 to PA610 is 60:40 to 80:20, and the melt strength of the nylon resin is greater than or equal to 18 Pa·s; introducing a composite foaming agent, wherein the composite foaming agent is a combination of a chemical foaming agent and a physical foaming agent; and adding a nucleating agent, wherein the nucleating agent is nano-sized silica, nano-clay, talc, or a combination thereof, wherein the mass content of nano-silica is 0.5% to 2.0%. This invention can maintain stable dimensions and mechanical properties in humid environments and has a uniform and stable cell structure.

This application relates to the field of flexible electronics technology, and more particularly to multilayer flexible electronic devices, their fabrication methods, and applications. The fabrication method includes: providing a film unit, comprising a flexible film and a circuit bonded to a surface of the flexible film, wherein the surface of the film unit with the circuit bonded is designated as a first surface, and the surface opposite to the first surface is designated as a second surface; immersing the film unit and a first substrate in a liquid, performing a first bonding treatment on the first surface and the surface of the first substrate, and removing the film unit from the liquid to obtain a film composite unit; using the first surface of the film unit that has not undergone the first bonding treatment as a front surface, and the second surface of the film composite unit as a rear surface, performing a second bonding treatment on the front and rear surfaces; peeling the first substrate in the film composite unit after the second bonding treatment, so that the first surface in the film composite unit forms a new front surface; repeating the second bonding treatment and peeling treatment steps to obtain a multilayer flexible electronic device.

The application relates to the technical field of special glass, and provides a glass substrate, chemically strengthened glass and a strengthening method and cover plate glass. The glass substrate provided by the application comprises the following components in terms of the total mole content of oxides in the glass substrate: SiO2: 58-68%; Al2O3: 7.5-9.2%; Na2O: 11.3-14.5%; K2O: 2.5-5%; MgO: 7.5-10.2%; B2O3: 0-2%; ZnO: 0.1-2%; and WO3: 0.1-4%. The size change rate of the glass substrate provided by the application is less than or equal to 0.015% before and after chemical strengthening. During the chemical strengthening process, the glass substrate needs to be inserted into a holder, and then the glass substrate and the holder are placed in a strengthening salt bath for strengthening. Since the size change rate of the glass substrate provided by the application is small, the holder does not need to reserve a large size change gap, and the risk of glass film falling can be obviously reduced.