Characteristics of Polyvinyl Alcohol fiber /PVA fiber
Writer： admin Time：2020-02-27 11:57 Browse：
High strength and high modulus PVA fiber has high tensile strength and modulus. Because of its excellent properties such as acid and alkali resistance, aging resistance, corrosion resistance and UV resistance, it has no pollution to human body and environment. It is the ideal material to replace industrial asbestos. It is widely used in high performance concrete engineering and mint, military and other special fields.
1. Superior mechanical and physical properties. PVA fiber with high strength and high modulus has high tensile strength and modulus, low elongation, tensile strength can be comparable with that of steel bars, elastic mold matches with that of concrete, can improve the early tensile strength of concrete, can also improve the tensile strength of concrete in the middle and later stages, can greatly save the construction and maintenance time, and shorten the construction period.
2. High compatibility with cement. High strength and high modulus PVA fiber has a good affinity with cement, and the bonding strength is better than nylon 6, polypropylene, polyester and other fibers. Because of its unique molecular structure, PVA fiber and brittle material cement interface adhesion is good, and plays a role in strengthening.
3. Good dispersion. PVA fibers with high strength and high modulus do not adhere to each other and disperse well in water. The fibers are distributed uniformly and randomly in the concrete, and they are overlapped to form a three-dimensional network structure. It can change the brittleness of concrete, increase its toughness, improve the crack resistance, impermeability, frost resistance and impact resistance of concrete, so as to improve the overall quality and durability of concrete.
4. Good alkali and weather resistance. PVA fiber with high strength and high modulus has excellent chemical stability. It does not react with any material in concrete when mixed with concrete. Its acid and alkali resistance and chemical resistance are better than other fibers such as man-made fiber, nylon 6 and polyester.
5. Good light and corrosion resistance. The strength loss rate of PVA fiber with high strength and high modulus is much lower than that of other fibers under long-term sunlight, and the fiber buried in the ground for a long time is free from mildew, corrosion and moth.
6. Green and environmental protection without pollution. In the process of transportation and use, high-strength and high-modulus PVA fiber does not produce dust and inhale into human lungs, and will not decompose toxic gases when encountering high temperature, which is non-toxic and harmless to human body and environment.
QQ客服