The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 12, 2024
Filed:
Dec. 15, 2020
China Three Gorges Corporation, Beijing, CN;
China Three Gorges Renewables (Group) Co., Ltd., Beijing, CN;
Nanjing Haohui HI Tech Co., Ltd., Jiangsu, CN;
Jianping Liu, Beijing, CN;
Xin Xiang, Beijing, CN;
Jianhua Wu, Jiangsu, CN;
Yawei Zhu, Jiangsu, CN;
Yajing Li, Beijing, CN;
Liang Fang, Beijing, CN;
Jingxin Zhao, Jiangsu, CN;
Hong Wu, Jiangsu, CN;
Jianping Wu, Jiangsu, CN;
Hongwei Min, Beijing, CN;
Abstract
A high-temperature high-linear-pressure micro-eutectic method for enhancing a strength of a polytetrafluoroethylene (PTFE)-based membrane is disclosed. The method comprises the following steps: pushing a PTFE-based nano functional composite membrane forwards at a speed of 6-8 m/min in a high-temperature high-linear-pressure micro-eutectic cavity with a length of 1.5 m at a temperature of 380° C., controlling a linear pressure of a surface of the PTFE-based membrane to be 50-80 N/m, and under a coiling traction of a membrane coiling roller outside the cavity, enabling membrane molecular chains to shrink and generate eutectic phases, wherein multiple micro-eutectic molecular structures are arranged in parallel, and the PTFE-based nano functional composite membrane has a density of 2.1 kg/mand has nanoscale macromolecular aggregates and a nano-scale and micron-scale concave-convex geometrical ultra-micro-structure morphology with a surface average size of 10-20 μm, a height of 5-10 μm and a spacing of 10-20 km.