Polyvinyl chloride (PVC) fiber is a synthetic fiber spun from polyvinyl chloride resin, which is self-extinguishing. As a fiber solutions supplier, Alfa Chemistry offers PVC fiber products to meet customers' specific fiber material requirements.
Structure And Properties
- The monomer vinyl chloride is treated with peracid under pressure to obtain PVC, and the chemical process is shown as follows. Synthetic fibers can be made from the linear polymer PVC by wet or dry spinning.
- PVC fiber has the advantages of a wide range of raw materials, good flame retardancy, low price, good thermoplasticity, good elasticity, resistance to chemical agents and sunlight, good electrical insulation performance, high thermal insulation performance, wear resistance, good heat retention, etc. However, due to the poor heat resistance of polyvinyl chloride fibers, the stability to organic solvents and dyeing properties are poor.
- It is worth mentioning that the flame retardant properties of PVC fibers. At high temperature, PVC decomposes a large amount of non-combustible HCl gas, which takes away a lot of heat on the one hand, and isolates the air on the other hand to extinguish the flame. The limiting oxygen index LOI of PVC fiber is as high as 37.1%. It shrinks and carbonizes in an open fire, and it will extinguish itself when it leaves the fire source. This characteristic makes it especially suitable for flammable locations.
Chlorinated Polyvinyl Chloride Fiber
Chlorinated polyvinyl chloride (CPVC) is a chlorinated modified PVC with significantly improved heat resistance, physical and mechanical properties, chemical stability and flame retardancy. Fibers made from CPVC are highly chemically stable, water and fire resistant. One of the advantages of CPVC fibers is that they can be produced using acetone as a solvent. However, the performance of this fiber is not better than that of PVC fiber.
Research And Application
- In commercial use, PVC fiber can be used in clothing and textile industry, household goods, medical protective gear, filter cloth, etc.
- In scientific research, the PVC nanofibers obtained by the electrospinning process have many outstanding properties, such as low density, high porosity, corrosion resistance, strong hydrophobicity, remarkable affinity for oil, etc. In the field of environmental treatment, PVC nanofibers can be used for water filtration and treatment, air filtration, oil spill cleanup, etc. In energy applications, PVC nanofibers can be used as battery separators and electrolyte membranes, etc. In addition, other potential applications of PVC nanofibers include protective clothing, anti-corrosion protection, reinforcement in composite materials, etc. [1]
Experiment separation of motor oil by PVC/PS nanofibers.
- CPVC fibers can be used as new precursors for carbon fiber materials. Jinchang Liu et al. explored the potential of CPVC as a novel and efficient precursor for carbon fibers. In this work, the spun CPVC fibers were directly converted to CF by solution spinning and solid-state carbonization process. CPVC-derived carbon fibers exhibit relatively smooth surfaces. However, it still exhibits lower mechanical properties. [2]
The SEM micrographs of (a) CPVC spun fiber and (b) the CPVC-derived carbon fiber.
References
- Le Quoc Pham, et al. Fibers, 2021, 9(2), 12.
- Jinchang Liu, et al. Polymers, 2020, 12(2), 328.
Our products and services are for research use only.
