Polyvinyl Alcohol

PVA

Polyvinyl Alcohol (PVA) is a water-soluble polymer used as a functional additive in dry-mix mortars and other construction materials. It is primarily used in tile adhesives, wall putty, repair mortars, gypsum-based materials, and other cementitious formulations to improve bonding, cohesion, film-forming properties, and overall mechanical performance. PVA provides an effective solution for manufacturers seeking stronger adhesion, improved mortar integrity, and more stable application performance, and can be used together with cellulose ethers and other polymer additives to optimize formulation performance.

Chemical Name: Polyvinyl Alcohol

Product Advantages

Key Performance

Adhesion

Improves bonding between mortar and different substrates, helping provide stronger and more reliable adhesion in construction applications.

Cohesion

Enhances the internal cohesion of mortar, helping improve material integrity and reduce separation or loss of strength within the mortar layer.

Film Formation

Forms a continuous polymer film after drying, contributing to improved bonding and overall mechanical performance of the hardened material.

Flexibility

Helps improve the flexibility of modified mortar and its ability to accommodate minor movement and stress.

Crack Resistance

Helps improve resistance to shrinkage and stress-related microcracking, supporting better durability of the finished material.

Mechanical Strength

Helps enhance the mechanical performance of cement- and gypsum-based materials, contributing to stronger and more durable formulations.

Product Data

Technical Parameters

Parameter	Value	Unit	Note
Viscosity	20–60	mPa·s	4% aqueous solution, 20°C
Degree of Hydrolysis	86–99	mol%	Depending on product grade
Purity	≥94.0	%	Dry basis
Volatile Matter	≤5.0	%	Typical specification
Ash Content	≤0.5	%	Residue after ignition
pH Value	5.0–7.0	—	4% aqueous solution
Particle Size	80–160	mesh	Depending on product grade