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　　Overview of new materials for fluororubber heat shrinkable tubes and the differences between various materials

　　Viton heat shrinkable tubes have gradually replaced the original insulation and protection measures and are widely used. The advantage of the fluororubber heat shrinkable tube is that it is simple and convenient to use, but it also has a lot of secret knowledge. There are many kinds of material classifications, and today we will make an in-depth interpretation of fluororubber heat shrinkable tube materials.

　　Viton heat shrink tubing material:

　　The more common materials are PVC (polyvinyl chloride), PE (polyethylene), PVDF (polyvinylidene fluoride), PTFE (polytetrafluoroethylene), fluorine rubber, EPDM (EPDM), FEP (polyperfluoroethylene), etc. It is often used in military standard products, and silicone rubber can be used in food and medical treatment.

　　Material characteristics of fluorine rubber heat shrinkable tube:

　　1. PVC (polyvinyl chloride) material is often used to make PVC heat shrinkable tubes. The product wall thickness is thinner, and the price is the cheapest among heat shrinkable tubes. Commonly used in battery insulation protection and mop rod packaging, the color is more vivid. The disadvantage is that it is not environmentally friendly.

　　2. Heat-shrinkable tubing made of PE (polyethylene) is currently widely used and accounts for a large proportion of products. Because it has better insulation and wear resistance, more products can be manufactured. After secondary development, the original process was improved, and a layer of hot melt adhesive was coated on the inner wall, and the new product double-wall adhesive heat shrinkable tube came out, because the inner wall of the hot melt adhesive blocks air and moisture from entering, it is also called waterproof heat shrinkable tube. Tube. With the development of industrial progress, the performance requirements have been improved, and on the basis of the original wall thickness and the increase of the adhesive layer, it has evolved into the commonly used cable heat shrinkable sleeve. PE materials are involved in both the electronics industry and the power industry, so it accounts for the largest proportion of widely used materials. It can produce products in red, yellow, green, blue, black, white, transparent and other colors, with dull luster (matte).

　　3. The fluorine rubber heat shrinkable tube made of PVDF (polyvinylidene fluoride) can resist high temperature and can withstand some solvents and oils. The temperature grade is divided into 150°C and 175°C, 150°C is soft, and 175°C is semi-hard. The use environment can also be divided into two categories: industrial industry and medical industry. Standard products are black and clear. Black has a nice sheen. Transparent products are specially prepared not to turn yellow during application.

　　Industry: Especially suitable for environments with high temperature resistance, solvent resistance and abrasion resistance.

　　Medical industry: It adopts medical-grade fluoropolymer formulations and passed the medical biocompatibility test.

　　4. The Chinese name of polytetrafluoroethylene (PTFE) is also called Teflon, so the heat-shrinkable tube prepared is also called Teflon fluororubber heat-shrinkable tube, commonly known as plastic king resin, which has a high temperature resistance of 260°C and a large Resistance to most chemical solvents and high mechanical strength against abrasion. The standard products of Teflon heat shrinkable tubes are generally only transparent. Due to the particularity of the material, the products produced have a certain whitening effect and are not completely transparent.

　　5. The heat-shrinkable tube made of fluororubber also has high temperature resistance and low temperature resistance up to -65°C, and is not brittle at low temperature. It has excellent oil resistance and chemical corrosion resistance, and can protect wire harnesses and cables in oil or high temperature environments. The finished product is black and appears to have a layer of oil on the surface. It feels like rubber and has a certain stickiness.

　　6. After special processing, EPDM rubber has good physical and mechanical properties and good wear resistance. It is mainly used for insulation protection of electronic components in cable harnesses. It is soft and elastic and has good grip. Widely used in electronics, automobiles, decoration and lighting engineering. It can work at a temperature of 150°C for a long time, and can also be used at a temperature of 180-200°C for a short time or intermittently. Standard color is black.

　　7. The main outstanding performance of FEP (polyperfluoroethylene) is good transparency, and it can continue to work at a high temperature of 200°C. It can solve the needs of high temperature resistance, corrosion resistance and high transparency.

　　8. Silicone fluororubber heat-shrinkable tubes are equipment and products made of silicone rubber mixed and refined into flame-retardant and flame-retardant types. Silicone heat-shrinkable tubes are often used in medical equipment with certain requirements for product flexibility and high temperature resistance .