To understand "carbon black", we first need to understand an important performance indicator of plastic pipes - weather resistance.
Weather resistance refers to the ability of materials to resist aging, deterioration and performance degradation in the natural environment (such as sunlight, temperature, humidity, rain, wind and other natural factors).
Weather resistance is an important indicator for evaluating materials in outdoor application scenarios, especially for building materials, coatings, plastic products, etc. that are exposed to the natural environment for a long time.
The role of "carbon black" is to improve the weather resistance of PE and other plastic pipes in a targeted manner.
When PE plastic pipes are exposed outdoors, the ultraviolet rays in the sunlight, as a high-energy ray, will decompose the molecular chains on the surface of the plastic and produce free radicals. The free radicals are further oxidized to produce peroxides, which react with polymers to cause polymer aging. The final reflection on the pipe is surface cracking and brittleness, the mechanical properties continue to decline, and the service life is reduced.
Carbon black is a black powdered carbon material, usually made from petroleum byproducts, natural gas or coal through incomplete combustion or pyrolysis. Carbon black is widely used as a pigment and filler in industries such as rubber, coatings and inks.
After adding carbon black, PE pipes can form a uniformly distributed carbon black layer, which effectively absorbs and scatters ultraviolet rays, improves the antioxidant properties of PE pipes, and prevents aging and breakage.
In PE pipes, the role of carbon black is mainly manifested in the following two aspects:
Jwell started manufacturing screws and barrels in 1978, making it one of the earliest screw and barrel manufacturers in China. Its brand, "Jinhailuo", has become well recognized in the industry. In 1997, Jwell was established as a plastic extrusion machinery manufacturer and began the production of extrusion machinery. Today, Jwell is the vice president unit of the China Plastics Machinery Industry Association and one of the technology leaders in the extrusion machinery industry.
