Polypropylene fiber is a synthetic fiber made from polypropylene polymer, featuring excellent properties such as high strength, corrosion resistance, light weight and crack resistance. Due to its outstanding physical and chemical properties and low-cost advantage, it is widely used in multiple fields including construction, textile, medical care and environmental protection.
Performance features: It possesses a variety of superior performances and is suitable for diverse scenarios
Physical properties: Low density (about 0.91g /cm³), it is the lightest among all chemical fibers, with a soft hand feel, good wear resistance and elasticity.
Mechanical properties: High tensile strength (>450 MPa), elongation at break can reach 15%-20%, and it has excellent impact resistance and fatigue resistance.
Main uses and application scenarios
The field of construction engineering
The most prominent application of polypropylene fibers is as anti-cracking reinforcing materials in cement concrete and mortar.
1. Effectively control micro-cracks caused by plastic shrinkage, dry shrinkage and temperature changes;
2. Enhance the impermeability, freeze-thaw resistance, impact resistance and durability of concrete;
3. The dosage is usually 0.6-1.2 kg/m³, with the optimal volume dosage being approximately 0.2%, which can enhance the crack resistance by more than 70%.
4. The construction is simple and convenient. There is no need to change the original mix ratio. Just stir evenly.
Chemical stability: Strong resistance to acids and alkalis, not easily eroded by microorganisms, and can remain stable in strong acid and strong alkali environments.
Thermal and electrical properties: The melting point is approximately 160-175°C, with average heat resistance and not resistant to ironing. It has an extremely high resistivity and excellent electrical insulation and warmth retention properties.
Environmental adaptability: Extremely low moisture absorption rate (<0.1%), hardly absorbs water, easy to wash and dry quickly; It has UV resistance and certain degradability and recyclability, meeting environmental protection requirements.
1. The textile and daily necessities sector
It is popular for making summer clothing, sportswear, underwear, etc., which are lightweight, breathable, quick-drying and comfortable.
It is used for decorative materials such as carpets, wall fabrics and curtains, and has the advantages of being stain-resistant, moth-proof and easy to clean.
Produce non-woven fabric products such as diapers, sanitary napkins, shopping bags, etc.
2. Medical and health protection
It is used for manufacturing disposable medical products, such as surgical gowns, masks, gloves, medical gauze, etc.
It features antibacterial, breathable and non-irritating properties, and is highly safe.
3. Industry and other fields
Filtration industry: Utilizing its porous structure, it is used in water treatment, air filtration, food processing and other fields;
Automotive industry: As interior materials and seat fillers, it offers lightweight and durability.
Packaging materials: Made into woven bags, ropes, packing straps, etc., which are of high strength and low cost.
Composite material reinforcement: For instance, when combined with bamboo fiber, the mechanical properties of polyacrylum-based composites are enhanced.
Conclusion
Polypropylene fiber, with its comprehensive advantages such as light weight, high strength, corrosion resistance, low cost and environmental friendliness and recyclability, is widely used in construction, textile, medical care, industry and other fields. Especially in concrete engineering, it can significantly enhance the crack resistance and durability of materials, and is a highly efficient, economical and convenient functional additive for construction. In the future, with the development of green building materials and high-performance composite materials, their application prospects will be even broader.
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