Premium Polyvinyl Alcohol PVA Factory Leading China Suppliers of High Purity PVA
Polyvinyl Alcohol (PVA) is a high-performance, water-soluble, and environmentally friendly macromolecular polymer available as white or yellowish granules or powder. Positioned perfectly between the properties of plastics and rubber, PVA offers an exceptional combination of oil resistance, solvent resistance, and thermal stability, making it an indispensable additive in modern industrial chemistry.
Engineered for versatility, our PVA serves as a superior protective colloid and gas barrier with outstanding abrasion resistance. Whether used to enhance the structural integrity of construction materials or as a high-purity excipient in medical applications, it delivers consistent smoothness and robust bonding capabilities across diverse industrial environments.
Detailed Parameters
| Alcoholysis Degree | 87.0-89.0 Mole(%) | Viscosity | 44.1-55.9 mpa.s |
|---|---|---|---|
| Volatile Content | ≤5.0 Wt.(%) | Ash Content | ≤0.5 % |
| PH Value | 5-7 | Purity | ≥93.5 % |
| Degree of Polymerization | 2400-2500 (DP) | Sodium Acetate | 2.8% Max |
| Physical Form | Granule/Powder | Solubility | Water-Soluble |
Key Advantages
Superior Thickening
Provides excellent thickening properties when used in surfactants, ensuring optimal consistency and stability of the final mixture.
Enhanced Film Formation
Significantly improves the flexibility, flex resistance, and stretch resistance of product coatings and films.
Strong Bonding Effect
Acts as a high-efficiency binder that ensures robust adhesion between layers in various industrial applications.
Eco-Friendly Profile
A biodegradable and non-toxic macromolecular polymer that meets strict environmental safety standards.
Surface Refinement
Reduces delamination and scarring during grinding, resulting in a smoother and finer polished surface finish.
High Purity Grade
Advanced purification processes ensure purity ≥93.5%, suitable for sensitive medical and optical film industries.
Product Gallery
Management Platforms
Putty Optimization
Improves cohesive strength and water resistance in gray calcium and cement-based putties.
Dry Powder Mortar
Synergizes with cellulose ether to prevent peeling, cracking, and empty drum effects.
Polishing Putty
Creates a denser, harder, and brighter coating surface that is highly resistant to scrubbing.
Instant Glue Binder
Serves as the primary binder for high-performance glue powders with excellent leveling.
Exterior Wall Putty
Accelerates cement setting speeds and enhances early strength for durable wall finishes.
Specialized Industry
Optimized for high-purity requirements in medical excipients and optical film production.
Investment Return Comparison
| Performance Metric | Standard Grade | Our Premium PVA |
|---|---|---|
| Bonding Strength | Moderate | Ultra-High |
| Film Flexibility | Basic | Enhanced Elasticity |
| Surface Fineness | Standard | High-Precision Smoothness |
| Processing Speed | Normal | Accelerated Setting |
| Purity Level | Industrial | Medical/Optical Grade |
Frequently Asked Questions
Q: How does PVA improve the quality of dry powder mortar?
PVA provides excellent film-forming properties. When used with cellulose ether, it increases flexibility and water retention, significantly enhancing bonding strength and preventing cracks or peeling.
Q: What is the difference between PVA and standard cellulose ethers?
While cellulose ethers primarily focus on water retention and thickening, PVA focuses on binding strength, film formation, and improving the physical durability (flex resistance) of the material.
Q: Can PVA be used in pharmaceutical applications?
Yes, our high-purity grade PVA (with sodium acetate
Q: How should Polyvinyl Alcohol be stored to maintain stability?
PVA should be stored in a cool, dry place away from direct sunlight and pressure. Unopened packaging is stable for several years, but open bags are susceptible to air humidity.
Q: What is the role of PVA in gray calcium base putty?
Even in small amounts, PVA improves cohesive strength and adhesion. It reduces the required amount of lime-calcium powder and prevents delamination during the grinding process.
Q: What are the primary chemical reactions in PVA production?
The production involves four main stages: alcoholysis reaction of polyvinyl acetate, saponification reaction with sodium hydroxide, neutralization with acetic acid, and finally vacuum drying.
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