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

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12138871
APP PUB NO 20230256690A1
SERIAL NO

17784484

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

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.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

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 LTDROOM 206-23 SECOND FLOOR 1ST BUILDING 1ST YARD GONGYUAN STREET TONGZHOU DISTRICT BEIJING 100000
NANJING HAOHUI HI TECH CO LTDROOM 417 NO 420 ZHONGHUA ROAD QINHUAI DISTRICT NANJING JIANGSU 210006

International Classification(s)

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

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 May 12, 2028
7.5 Year Payment $3600.00 $1800.00 $900.00 May 12, 2032
11.5 Year Payment $7400.00 $3700.00 $1850.00 May 12, 2036
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00