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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.
Other Applications
- 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) and what is its physical form?
Polyvinyl alcohol (PVA) is a water-soluble polymer. It is typically supplied in white flake, flocculent, or powdered form.
What are the primary characteristics of Polyvinyl alcohol?
PVA features excellent water solubility (forming transparent solutions), strong adhesion properties, outstanding film-forming strength and flexibility, solvent resistance, and friendly biocompatibility.
What are the key technical specifications for HS1788SA1 and HS2488SA1 models?
Both models are white powders with an alcoholic degree of 87-89%, residual moisture ≤5.0%, and PH value of 5-7. The main difference lies in their viscosity (4% solution): HS1788SA1 is 20.5 - 24.5 MPa·S, while HS2488SA1 is 45.5 - 55.5 MPa·S.
What are the main application areas of PVA?
PVA is widely used in building adhesives, textile slurry (warp sizing), general adhesives, fiber production, papermaking, polyvinyl acetate, putty, gypsum mortar, ceramic tile adhesive, and even in the medical field for drug capsules.
What precautions should be taken when storing and dissolving PVA?
PVA should be stored away from moisture and high temperatures. During dissolution, you must control the temperature and stirring speed to ensure complete dissolution and to prevent the degradation of its performance.