1. Characteristics of PVDF high-temperature heat shrink tubing
PVDF high-temperature heat shrink tubing is a high-performance heat shrink material made of polyvinylidene fluoride (PVDF), which has multiple excellent characteristics:
1. High pressure resistance: PVDF material has good mechanical strength and pressure resistance, even ultra-thin heat shrink tubing can maintain stable shape in high-pressure environments, effectively protecting internal circuits and components from pressure damage.
2. Stable performance: PVDF heat shrink tubing has a tight coating layer formed after high-temperature shrinkage, which has long-lasting stability and is not easily affected by environmental changes. Long term use will not cause aging or brittleness.
3. Acid and alkali resistance: PVDF material has extremely high resistance to acid and alkali. Whether in strong acid, strong alkali or other corrosive environments, PVDF high-temperature heat shrink tubing can maintain its original properties and provide effective isolation protection.
4. Good temperature resistance: PVDF heat shrink tubing can withstand high temperatures up to 175 ℃ or even higher, while also maintaining good elasticity in low-temperature environments, so it can work normally in a wide temperature range.
2. Application areas of PVDF high-temperature heat shrink tubing
1. Instrumentation: The internal circuits, sensors, and connections of precision instruments and meters often require compact and efficient protective measures. PVDF high-temperature heat shrink tubing precisely meets this requirement, providing tight insulation and protection.
2. Railway transportation: In the field of railway transportation, especially in the power system, signal transmission system, and onboard equipment of trains, PVDF heat shrink tubing helps to improve the safety and durability of the system.
3. Electronic appliances: In the manufacturing of electronic appliances, whether it is household appliances, communication equipment, or industrial control systems, PVDF heat shrink tubing can be seen, which is responsible for providing insulation and protection for components such as wires and joints.
4. Special cables: For cables used in special environments such as deep sea, high temperature, corrosive environments, etc., PVDF high-temperature heat shrink tubing can provide additional mechanical protection and environmental isolation functions, extending the service life of the cable.
3. Customization process of PVDF high-temperature heat shrink tubing
1. Incoming material inspection: Firstly, strict quality inspection is carried out on the raw material PVDF resin to ensure that the purity and performance of the raw material meet the customized requirements.
2. Mold customization: Design and manufacture molds according to the specific needs of customers, in order to produce heat shrink tubing of corresponding specifications and shapes.
3. Silicone refining: For certain special applications, it may be necessary to add auxiliary materials such as silicone to PVDF resin to ensure uniform distribution of materials through mixing and refining processes.
4. Extrusion molding: Using professional extrusion equipment, the pre treated PVDF resin is melted and extruded into a tube shape, while the heat shrink tube is in an uncontracted state.
5. Measurement of dimensions: Accurately measure the dimensions of the preliminarily formed PVDF heat shrink tubing to ensure that it meets the customized specifications.
6. Inspection and shipment: After completing the above procedures, performance testing and quality inspection are carried out on the finished products. Only qualified products can be packaged and shipped, and delivered to customers.