Heat shrink tubing is a thermoplastic rubber tubing material. In our industry, low-voltage heat shrink tubing is commonly referred to as thin tubing, while high-voltage heat shrink tubing, such as 10kv and 35kv heat shrink tubing, is known as busbar heat shrink tubing or simply as busbar. Today, we will discuss the materials and colors of heat shrink tubing.

Heat shrink tubing can be divided into PE heat shrink tubing, PVC heat shrink tubing, PET heat shrink tubing, and irradiated cross-linked PE heat shrink tubing based on its material. It seems that there are quite a few options for materials to choose from when making heat shrink tubing. So, let me pick out one or two for you and give you a detailed explanation.

First, let's talk about polyethylene (PE), a widely used material. PE is an abbreviation of the English word "polyethylene", and its Chinese name is "聚乙烯". It is a thermoplastic resin produced through the polymerization of ethylene. Polyethylene is odorless, non-toxic, and feels similar to wax. It has good low-temperature resistance and can withstand the erosion of most acids and alkalis (but not acids with oxidizing properties). It is insoluble in general solvents at room temperature, has little water absorption, and possesses excellent electrical insulation properties. Due to its wear resistance and good insulation properties, it is widely used in the manufacture of heat-shrinkable products, such as single-wall heat-shrinkable tubes and high-voltage busbar heat-shrinkable tubes, which are made from polyethylene.

What I'm introducing to you is the material of heat shrink tubing, PVC. PVC is an abbreviation of the English word "Polyvinyl chloride", and its Chinese name is "聚氯乙烯". PVC is a white powder without a specific shape or structure. It is sensitive to light and heat. Under high temperatures and prolonged exposure to sunlight, it will decompose and produce hydrogen chloride, which will then decompose further, leading to discoloration and poor stability. Due to its material properties, PVC heat shrink tubing is relatively inexpensive. It comes in a wide range of colors, and the colors are bright and attractive.

We all know that heat shrink tubing can be divided into 1kv heat shrink tubing, 10kv heat shrink tubing, and 35kv heat shrink tubing based on voltage levels. For 1kv heat shrink tubing, the conventional colors include red, blue, yellow, green, black, white, and bi-color. Additionally, we also offer special colors such as transparent, purple, brown, gray, and orange. Compared to 1kv heat shrink tubing, the colors of 10kv and 35kv heat shrink tubing are much less vibrant. The available colors for 10kv and 35kv heat shrink tubing in stock are only rust red, yellow, and green.

As mentioned above, we have discussed the material and color of heat shrink tubing. Now let's talk about the relationship between the color and material of heat shrink tubing. Generally speaking, if the color of heat shrink tubing is uniform and free of impurities, it indicates that the quality of the heat shrink tubing is good. The corresponding material selection is also of high quality. However, this cannot be generalized. There are many factors that affect the quality of heat shrink tubing.