PVA 173 Polyvinyl Alcohol Product Description
PVA 173 is a high-quality polyvinyl alcohol (PVA) that is widely used in various industrial applications due to its excellent film-forming, emulsifying, and adhesive properties. This water-soluble synthetic polymer is known for its versatility and is commonly utilized in the production of coatings, adhesives, and films. PVA 173 is characterized by its high degree of hydrolysis, which enhances its solubility in water and makes it suitable for a range of applications, including textiles, paper, and construction materials.
Key Features:
- Water Solubility: PVA 173 is highly soluble in water, making it ideal for applications that require easy mixing and application.
- Film-Forming Ability: It forms a strong, flexible film upon drying, which is beneficial for coatings and packaging materials.
- Adhesive Properties: PVA 173 exhibits excellent adhesion to various substrates, making it suitable for use in adhesives and sealants.
- Biodegradability: As a polymer derived from renewable resources, PVA is biodegradable, making it an environmentally friendly choice.
Common Uses:
- Textile Industry: Used as a sizing agent and for finishing fabrics.
- Paper Industry: Employed in the production of paper coatings and adhesives.
- Construction: Utilized in cement and mortar formulations to improve workability and adhesion.
- Packaging: Used in the production of biodegradable films and coatings.
Technical Data
| Property | Value |
|---|---|
| Chemical Name | Polyvinyl Alcohol |
| CAS Number | 9002-89-5 |
| Molecular Weight | 44,000 – 100,000 g/mol |
| Degree of Hydrolysis | 85% – 88% |
| Appearance | White to off-white powder |
| Solubility | Soluble in water |
| pH (1% solution) | 4.5 – 6.5 |
| Viscosity (1% solution) | 20 – 50 mPa·s |
| Melting Point | 230 – 240 °C |
| Tensile Strength | 30 – 50 MPa |
| Elongation at Break | 200 – 300% |
Summary
PVA 173 is a versatile and effective polyvinyl alcohol product that serves a multitude of applications across various industries. Its unique properties, such as water solubility, film-forming ability, and adhesive characteristics, make it an essential material for manufacturers looking for reliable and sustainable solutions. Whether in textiles, paper, construction, or packaging, PVA 173 continues to be a preferred choice for many applications.