High-temperature high-linear-pressure micro-eutectic method for enhancing strength of polytetrafluoroethylene (PTFE)-based membrane

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PATENT NO 12138871
APP PUB NO 20230256690A1
SERIAL NO

17784484

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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/m3 and 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.

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Patent Owner(s)

Patent OwnerAddress
CHINA THREE GORGES CORPORATION443002 NO 1 JIANSHE ROAD HUBEI YICHANG YICHANG CITY HUBEI PROVINCE 443002
CHINA THREE GORGES RENEWABLES (GROUP) CO LTDBUILDING 5 CHENGDA CENTER NO 2 LIANGSHI STREET TONGZHOU DISTRICT BEIJING 101199
NANJING HAOHUI HI TECH CO LTDROOM 417 NO 420 ZHONGHUA ROAD QINHUAI DISTRICT NANJING CITY JIANGSU

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fang, Liang Beijing, CN 89 295
Li, Yajing Beijing, CN 8 3
Liu, Jianping Beijing, CN 43 91
Min, Hongwei Beijing, CN 3 0
Wu, Hong Jiangsu, CN 93 577
Wu, Jianhua Jiangsu, CN 43 259
Wu, Jianping Jiangsu, CN 115 1857
Xiang, Xin Beijing, CN 21 92
Zhao, Jingxin Jiangsu, CN 7 4
Zhu, Yawei Jiangsu, CN 9 11

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