What is the difference between PVC sheath and PE sheath

Many friends do not understand the difference between PVC sheath and PE sheath. Indeed, the concepts of PVC sheath and PE sheath are often confused. So, what is the difference between PVC sheath and PE sheath, and what is the knowledge about PVC sheath?

1. What is the difference between PVC sheath and PE sheath

1. The temperature resistance and aging resistance are different.

2. PVC contains chlorine, which has a strong smoke smell after burning, and this book has a certain flame retardancy. The chemical formula is (-CH2-CHCl-) and the colors are diverse. It is more common in daily life. If it is exposed to the sun for a long time, it will crack. PE is relatively soft.

3. PE has no smoke, much lighter than PVC, flammable, chemical formula (-CH2-CH2-), also afraid of light, often black

4. If you want to distinguish in practice, use a lighter, smell the smell, and see if there is ash after burning (PVC has, PE does not), and it can be distinguished by looking at the degree of flammability.

Extension:

(1) Polyvinyl chloride, referred to as PVC (Polyvinyl chloride) in English, is an initiator of vinyl chloride monomer (VCM) in peroxides, azo compounds, etc.; or by free radicals under the action of light and heat Polymers produced by polymerization.

Vinyl chloride homopolymers and vinyl chloride copolymers are collectively referred to as vinyl chloride resins.

(2) PVC is a white powder with an amorphous structure, the branching degree is small, the relative density is about 1.4, the glass transition temperature is 77-90 °C, and it begins to decompose at about 170 °C [1]. It has poor stability to light and heat. Above 100°C or exposed to sunlight for a long time, it will decompose to produce hydrogen chloride, which will further autocatalyze decomposition, causing discoloration and rapid decline in physical and mechanical properties. In practical applications, stabilizers must be added to improve the stability of heat and light.

(3) Polyethylene (PE) is a thermoplastic resin obtained by polymerization of ethylene. In industry, copolymers of ethylene with small amounts of alpha-olefins are also included. Polyethylene is odorless, non-toxic, feels like wax, has excellent low temperature resistance (minimum operating temperature can reach -100--70°C), good chemical stability, and can resist the erosion of most acids and alkalis (not resistant to oxidizing acids). It is insoluble in common solvents at room temperature, with low water absorption and excellent electrical insulation.

2. What are the relevant knowledge of PVC sheath

concept

PVC sheath is a kind of flat cable formed by wrapping multiple strands of copper wire stranded conductors with insulating materials and pressing the sheath material through the production line of high-tech automation equipment. , Simple connection, convenient disassembly, etc. The number and spacing of wires can be selected arbitrarily, which makes the connection more convenient, greatly reduces the volume of the product, reduces the production cost, and improves the production efficiency. It is suitable for data transmission cables or power transmission in electrical equipment. Common specifications include 0.5mm, 0.8mm, 1.0mm, 1.25mm, 1.5mm, 2.0mm, 2.5mm and other flexible cables with various spacings.

Scope of application

PVC sheathed spiral cable, economical spiral cable, used for equipment connection with low resilience. This cable is widely used as a retractable control connection line in control units that require reciprocating movement, such as machine tools, production lines, robots and power tools.

Features of this paragraph

1. Excellent cost performance, slow rebound, but extremely economical

2. PVC compound, oil resistant

The structure of this paragraph

Conductor material: multi-strand finely twisted ultra-fine bare copper wire conductor.

Conductor structure: in line with DIN VDE0295 class 6 standard.

Core insulation: PVC compound.

Covering: Textile fiber covering.

Core identification: colored core.

Outer sheath: PVC compound.

Fold and edit the technical indicators of this paragraph

Temperature range: -5℃——+70℃

Working voltage: 300/500V

Test AC voltage: 2000V

Executive standard: in line with VDE, GB

Regarding the little knowledge about PVC, ZR Cable reminds that the concept of PE sheath is actually a polymer of ethylene, which is non-toxic. Easy to color. Good chemical stability, cold resistance, radiation resistance, suitable for packaging materials for food and medicine, and insulation materials for the electronics industry.

ZR Cable focuses on the research and development and sales of optical fiber communication products. Optical communication products include standard product optical cables, optical fiber jumpers Cables, mpo/mtp data centers, optical fiber distribution frames, etc., at ZR Cable you can buy all optical communication products in one stop.