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Wholesale PVA Polyvinyl Alcohol from China Suppliers and Factory - High Quality and Competitive Prices
Product Overview
Polyvinyl alcohol (PVA) is a water-soluble polymer that is usually white in flake, flocculent, or powdered form.
Product Characteristics
- Excellent water solubility: It can dissolve in water at different temperatures to form a transparent solution.
- Good adhesion: Has a strong bonding effect on a variety of materials.
- Excellent film formation: The formed film has high strength and flexibility.
- Solvent resistance: To a certain extent, it can resist the erosion of common solvents.
- Biocompatibility: Relatively non-toxic and friendly to the human body and the environment.
Product Use
Textile Industry
- Used as warp sizing material to improve the strength and wear resistance of yarns.
- Printing and dyeing auxiliaries, help dye adhesion and uniform distribution.
Paper Industry
- Paper surface sizing agent to increase the strength and water resistance of paper.
- Pigment coating adhesive to improve the properties of coated paper.
Adhesive Field
- Adhesive for wood, paper, fiber and other materials.
Construction Industry
- Cement additives to improve the properties of cement.
Medical Field
- The raw material of drug capsule, the auxiliary material of ophthalmic medicine.
Production Process
It is generally prepared by alcoholysis of polyvinyl acetate.
Market Prospects
With the increasing demand for high-performance materials in various industries, the market prospects for PVA are broad. Driven by the upgrading of traditional industries such as textiles and papermaking, as well as the development of emerging fields such as biomedicine and electronic materials, its market demand is expected to continue to grow.
Use Precautions
- Avoid moisture and high temperatures when storing.
- When dissolving, the temperature and stirring speed should be controlled to ensure adequate dissolution and the performance is not affected.
- Select appropriate models and specifications according to different application requirements.
- For example, in the textile industry, PVA with specific viscosity and alcoholysis degree needs to be selected according to the material and process requirements of the yarn; In the application of adhesives, the formulation and use of PVA should be adjusted according to the nature of the adhesive.
To sum up, Polyvinyl alcohol plays an important role in many fields with its unique properties, providing strong support for the development of related industries.
Technical Indicators
| Model | HS1788SA1 | HS2488SA1 |
|---|---|---|
| Appearance | White powder | |
| Alcoholic degree/% | 87-89 | |
| Residual moisture content/% | ≤5.0 | |
| Burning residue /% | ≤0.5 | |
| PH（20%） | 5 - 7 | |
| Viscosity (4%)/MPa·S | 20.5 - 24.5 | 45.5 - 55.5 |
Application Areas
- Building adhesive
- Textile slurry
- Adhesive
- Fiber
- Papermaking
- Polyvinyl acetate
- Putty
- Clean formaldehyde mud
- Exterior wall texture mortar
- Gypsum mortar
- EPS gypsum line
- Pointing agent
- Bonding mortar
- Ceramic tile adhesive
Application Performance
- Dispersibility and solubility, anti-clumping
- Improves bonding strength
- Excellent dissolution rate
- Film-forming properties
- Thermal stability
- Good chemical resistance
Details Pictures
Frequently Asked Questions (FAQ)
What is Polyvinyl Alcohol (PVA)?
Polyvinyl alcohol (PVA) is a water-soluble polymer that usually appears in white flake, flocculent, or powdered form. It is widely used across various industries due to its excellent solubility and adhesive properties.
What are the primary characteristics of Polyvinyl Alcohol?
PVA features excellent water solubility at various temperatures, outstanding adhesion to different materials, high strength and flexible film-forming capabilities, solvent resistance, and friendly biocompatibility.
In which industries is Polyvinyl Alcohol primarily used?
PVA is widely applied in the textile industry (warp sizing), paper industry (surface sizing and pigment coating), adhesive formulation, construction industry (cement additives), and medical field (drug capsules and ophthalmic medicine).
How should Polyvinyl Alcohol be stored and dissolved?
PVA should be stored in a cool, dry place away from moisture and high temperatures. When dissolving, it is essential to control both the temperature and stirring speed to ensure complete dissolution and maintain its performance properties.
How is Polyvinyl Alcohol produced?
Polyvinyl alcohol is generally prepared through the chemical process of alcoholysis of polyvinyl acetate.
How do I choose the correct PVA model for my application?
PVA models must be selected based on specific viscosity and alcoholysis degree requirements. For example, textile applications require models matching specific yarn materials, while adhesive formulations require adjustments based on the desired bonding properties.