China Three Gorges Corporation

China Three Gorges Renewables (Group) Co., Ltd.

Nanjing Haohui Hi Tech Co., Ltd.

China Three Gorges Renewablesco., Ltd.

Yawei Zhu

JianPing Wu

Xin Xiang

Jianping Liu

Jingxin Zhao

Hong Wu

Jianhua Wu

Jianping Wu

Wenwei Li

Zhiyu Sun

Yajing Li

Zhengfeng Shuai

Fangliang Zhao

Hongwei Min

Bo Pang

Liang Fang

Jinquan Zhao

The disclosure discloses a numerical simulation method of an influence of a polytetrafluoroethylene (PTFE)-based membrane on an aerodynamic characteristic of a wind turbine blade, and relates to the technical field of polymer composites. The simulation method comprises the following steps: selecting a wind turbine generator, a blade airfoil and a PTFE-based nano functional membrane; setting a numerical simulation computation network and a computation area of a wind energy capture area; determining main computation parameters and a Reynolds number for aerodynamic characteristic computation; establishing a geometrical model whose airfoil boundary extends by 0.26 mm (membrane thickness) along a normal direction to obtain a new computational geometry; computing by using a hydrodynamic computation method and a finite volume method; and obtaining an influence number simulation computation result.

Numerical simulation method of influence of PTFE-based membrane on aerodynamic characteristic of wind turbine blade

A preparation method of a polytetrafluoroethylene (PTFE)-based membrane for preventing and removing ices covering wind turbine blades is provided and the method comprises: preparing a membrane into a PTFE rod material with polymerized monomers by using monomer polymerization methods such as blending, pre-compressing and pushing; making the membrane into a PTFE-based homogeneous membrane with micropores and nano and micron scale concave-convex geometrical ultra-structure morphologies under the condition that the membrane is cracked to generate a laminar exfoliated fabric-like structure in the hot calendaring process of the PTFE rod material by using a hot calendaring and fusion polymerization method; and applying the PTFE-based homogeneous membrane to blades of a large wind turbine in operation.

Preparation method of PTFE-based membrane for preventing and removing ices covering wind turbine blades and use thereof

A preparation method of a polytetrafluoroethylene (PTFE)-based nano functional composite membrane and use is provided. The PTFE-based nano functional composite membrane can be applied to prevention and resistance of icing of various types of wind turbine generator blades in winter and salt spray corrosion resistance of wind turbine blades, in the meantime, can improve the aerodynamic performance of wind turbine blade airfoils and enhance the whole surface strength of the blade and protect the blade from undergoing aging erosion, and is a new-generation multi-functional brand-new composite membrane material which can be directly explored and applied to the industrial fields of preventing adhesion and corrosion of marine fouling organisms on steel pipe piles of offshore wind power and offshore platforms, avoiding snowing and icing of high-voltage transmission towers and cables, protecting snowing and icing of bridges (stay cables and suspension cables) and the like.

Preparation method of PTFE-based nano functional composite membrane and use

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.

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

A method for nano-depth surface activation of a PTFE-based membrane and relates to the technical field of polymer composites is disclosed. The method comprises the following steps: covering a functional surface of a PTFE-based nano functional composite membrane, performing surface activation treatment on a single surface of the membrane to which a bonding adhesive is applied, and migrating and complexing a high-toughness cold bonding adhesive tape on the membrane surface, with an activated structure layer, of the PTFE-based nano functional composite membrane through a mechanical adhesive applying device to form an adhesive-membrane complex. An extremely strong affinity and a high-strength bonding performance are generated between the membrane and the adhesive, and the adhesive-membrane complex is formed. Integration of membrane/adhesive bonding complexing, membrane/membrane bonding complexing and membrane/adhesive layer bonding is realized.

Method for nano-depth surface activation of PTFE-based membrane

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Jiangsu, China

Yawei Zhu