Analysis of the membrane forming process of proton exchange membrane and anion exchange membrane solution

With the growing global demand for new energy, finding sustainable renewable energy has become a top priority. Since the 21st century, water electrolysis hydrogen production technology has received unprecedented attention due to its outstanding advantages, and has gradually matured and has become an ideal energy storage solution.

Against this background, with the continuous advancement of hydrogen energy technology, electrolyzer diaphragm technology has also made significant progress. Based on the development trend of industry technology, Anhui Jinwei Automation has carried out in-depth research and development of ion exchange membrane film forming technology, and has successfully launched the industry-leading and relatively mature solution casting film forming production line, which can be used for large-scale production of proton exchange membranes and AEM anion exchange membranes.

1.Anion Exchange Membrane (AEM) Solution Film Forming Process

Solution casting film

PET substrate unwinding → traction → slit casting solution → hot air drying → cooling → winding (with PET substrate)

Film peeling

Double-layer film unwinding → PET substrate peeling → PET winding → film hot air drying → cooling → water washing → dehydration → finished product winding

Catalyst coating

Finished film unwinding → traction → catalyst coating → hot air drying → cooling → winding

Cutting and winding

Film unwinding → waste edge cutting → (route 1) slitting and winding or (route 2) single sheet cutting

Anion exchange membrane (AEM) solution film production line

2.Proton Exchange Membrane (PEM) Solution Film Forming Process

The main process is solution slit casting film forming:

Support mesh unwinding → traction → double-sided slit casting coating polymer solution → constant temperature water tank shaping → cleaning (constant temperature → room temperature) → water removal → deviation correction (optional waste edge cutting) → CCD detection (reserved) → winding (mesh + membrane winding together)

Proton exchange membrane (PEM) solution film production line

3.Specifications of solution film production line

The exchange membrane equipment currently put into production, whether it is hot air drying method (dry method) or water tank coagulation method (wet method), has been recognized by users.

Width specification

Conventional type: 1200mm

Maximum width: 2500mm

The wider the width, the higher the flatness requirement for the substrate (PET or mesh).

Working speed

Mass production line working speed: 1.0-2.0m/min

Test line working speed: 0.1m/min

Substrate type

PET (120μm-280μm)

Mesh (100μm-280μm)

Casting method

Precision slit extrusion unit

Others

Hot air drying method: oven length ≥ 60 meters; heat source is electric heating, steam, thermal oil, etc.

Coagulation water tank material: made of overall SUS 316 stainless steel; resistant to acid and alkali corrosion.

4.About JWELL Machinery – Anhui JWELL Automation Equipment Co., Ltd.

Anhui JWELL Automation Equipment Co., Ltd. is a professional company under JWELL Machinery. It is located in Quanjiao County, Chuzhou City, Anhui Province. It is a high-tech enterprise dedicated to the research and development, manufacturing and sales of functional, new materials, new process coating and composite production lines.

The factory area in Quanjiao County, Chuzhou City, Anhui Province covers an area of 248 acres. The company has more than 800 employees, including more than 150 technical management personnel. The company has a high-quality R&D team and an experienced team of mechanical and electrical commissioning engineers, as well as advanced mechanical processing bases and standardized assembly workshops. In line with the corporate spirit of “persistent dedication, hard work and innovation”, the company continues to explore the development of new areas of extrusion.

The company integrates design and development, production, sales, after-sales service and technical support. It has hundreds of high-precision CNC processing machines, heavy-duty processing equipment and a full set of heat treatment lines. It adopts advanced manufacturing technology and strict quality management system, and extends quality control to all aspects of product design and development and pre-sales and after-sales service to ensure the high quality of products and services. It is a well-known brand in the international plastic machinery industry.

We warmly welcome new and old customers at home and abroad to visit our company for guidance and cooperation. We are willing to provide you with professional coating equipment solutions and strong technical support.

Our users are all over the world, exported to more than 100 countries and regions including the United States, Canada, the United Kingdom, Germany, France, Spain, Italy, Russia, Turkey, Eastern European countries, India, Japan, South Korea, Indonesia, the Middle East, Africa, South America, etc., and are deeply trusted and praised by customers.

Technical exchange hotline:

Anhui Jinwei Automation Equipment Co., Ltd.

General Manager: Mr. Luo Xianhe

Contact number: 139 1887 3811

END

Aibon has established a hydrogen production industry exchange group, focusing on hydrogen production/application, alkaline water/PEM electrolyzer (diaphragm, plate, catalyst, pole frame, sealing gasket, etc.), PPS, proton exchange membrane, titanium metal, nickel mesh and other upstream and downstream industrial chains, equipment, materials, accessories and other supporting resources. Everyone is welcome to join.