Today we jointly understand and learn the chemical properties of PP yarns.

The chemical molecules of PP yarns are also very different and are composed of polypropylene fibers.

PP yarn has good heat resistance, and the product can be sterilized at a temperature above 100 ° C, and it is not deformed at 150 ° C under the condition of no external force.

The reported values for the glass transition temperature of PP yarn are 18qC, 0qC, 5°C, etc., which is also because people use different samples, in which the ratio of crystal phase to amorphous phase is different, so that the chain length of the amorphous part in the molecular chain is different. Caused by.

The melting temperature of PP yarn is about 40-50% higher than that of polyethylene, about 164-170 ° C, and the melting point of 100% isotactic polypropylene is 176 ° C.

PP yarn has good chemical stability. Besides being attacked by concentrated sulfuric acid and concentrated nitric acid, it is stable to various other chemical agents, but low molecular weight aliphatic hydrocarbons, aromatic hydrocarbons and chlorinated hydrocarbons can soften polypropylene and Swelling, while its chemical stability increases with the increase of crystallinity, so polypropylene is suitable for making various chemical pipes and fittings with good anti-corrosion effect. It is because of so many advantages that the role of PP yarns is increasing and the market is getting bigger and bigger.

Founded in 1991, Dongguan Donggang Chemical Fiber Co., Ltd. is located in Wenxia Brick Kiln Xiaxia Industrial Zone, Dongcheng District, Dongguan City, Guangdong Province. It is a medium-sized enterprise specializing in the production of various types of PP yarns. At present, it has 16 polypropylene filament production lines. The annual production capacity of 20,000 tons of PP yarn.

Donggang Chemical Fiber always adheres to the road of scientific and technological development. “Donghong Brand” PP yarn is exported to the United States, Europe, Southeast Asia and other places and enjoys a high reputation in the market.