The raw materials come from iron salts, carbon, etc., which are abundant in reserves and can be synthesized under normal temperature and pressure without producing toxic and harmful gases. Recently, Professor Xia Hui of Nanjing University of Science and Technology successfully synthesized amorphous FeOOH/graphene composite nanometers. The new amorphous material will greatly reduce the cost of ultracapacitors and greatly promote its commercialization.

The study of supercapacitor electrode materials has been focused on nanocrystalline materials. However, the nature of the nanocrystalline materials is difficult to expand or shrink, which limits the cycle life and rapid charge-discharge performance of supercapacitors. At the same time, the synthesis of nanocrystalline materials is usually carried out at high temperatures, which greatly increases the production costs, and the process is complicated, and it is difficult to achieve mass production, which greatly limits the widespread promotion of supercapacitors. At present, only a small amount is used in electric vehicles.

In recent years, researchers have begun to try to use amorphous materials for electrode materials for supercapacitors. Compared to crystalline materials, amorphous materials have lower synthesis temperatures, which greatly reduces the cost of electrode material synthesis. The amorphous material structure is also more stable and its volume can be controlled. However, the fly in the ointment is that the poor conductivity of the amorphous material and the small specific surface area limit the performance of the supercapacitor to a certain extent. Therefore, the development of new amorphous materials with low cost, mass production, high cycle life, and rapid charge/discharge is a core scientific issue in the field of new energy storage, and it is also a problem of industrial supercapacitor production in the world.

Professor Liu Jiaqi and Tutor Xia Hui have successfully synthesized amorphous FeOOH/graphene composite nanosheets. The synthesis method is green and simple. The composite electrode material exhibits excellent supercapacitor performance, high cycle life, and rapid charge and discharge. (Reporter Zhang Hao correspondent replaced)

Flexible accordion guide shield (Plastic Bellow Cover) is a kind of shield machine. Organ of the shape of the shield can be designed according to the actual needs various styles, at the same time, the size of shield can be made according to the actual needs. Shield (cover) for external use German nylon fabric, with PVC board support, both ends load for a fixed metal skeleton connection or plastic skeleton.

This kind of shield (cover) has advantages of small compression. Product can be oil resistant, corrosion resistant, hard objects collision deformation; Walking at the same time product has long life, good sealing, stable, durable, etc. Using this kind of product can bring perfect effect to the use of the machine tool. Shield (cover) inside without any metal parts, don't worry about shield (cover) work when a loose parts and causing severe damage to the machine.

The working speed of shield`s air bellows can reach 200 m/s. Flexible accordion guide shield (Plastic Bellow Cover) has been widely used in numerically controlled machine tools, electronic equipment, stone machinery, glass machinery, door machines, injection molding machine, manipulator, lifting transport equipment, automatic warehouse etc.

Structure of common Flexible accordion shield (Plastic Bellow Cover) material is as follows:

Plus material: Nylon cloth or protective cloth

Support: PVC sheet

Connecting plate: Resin plate, iron plate

Pulley: Copper or nylon bearing

Design parameters for flexible accordion guide shield (Plastic Bellow Cover)

1.     L: Length after drawing

2.     L1: Length after compression

3.     L2: Travel length

4.     B: Total width of the shield

5.     B1: Guide width

6.     B2: Interior width of the shield

7.     H:Total height of the shield

8.     H1:Guide height of the guide

9.     H2:Interior width of the shield

To calculate the dimensions of the welded bellow at the design stage, it is useful to pay mind some date:

1.     The standard folds have the following height: 15mm/ 20mm/ 30mm/ 35mm/ 40mm/ 45mm/ 50mm;

2.     The total play between the slides and the bellow must be from a minimum of 5mm to maximum of 10mm.

3.     The extension of one fold is equivalent to twice the fold`s height minus 10mm.

4.     The thickness of a compressed fold is on average 4mm.

5.     The compressed length of the bellows is equal to:

Extension of bellow÷extension of one fold ×(3~4.5mm)+flange thicknesses

The following is the multi-purpose shields (covers) that can be used for any types of machine or tools thanks to their various shapes and space-saving design.

Plastic Bellow Cover

Plastic Bellow Cover,Rod Bellows Shield Cover,Slideway Bellows Shield Cover,Rolling Curtain Shield Cover,Flexible Accordion Guide Shield Cover

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