High Viscoelastic Polymers, ACRYSET™ VA Series Acrylic polymer, dispersed in water
- Main Applications
Damping materials, soundproofing paints, shock absorbing materials, low temperature adhesives
- Applications
- Functions
Basic Information
The original design of polymers in the ACRYSETTM VA Series imparts superior vibration attenuation properties. The polymers possess stress relaxation properties due to control of the polymer’s dynamic viscoelasticity.
This characteristic is expected to impart superior properties for damping, soundproofing, shock absorbing, and thermal response, as well as binding capability and flowability.
Functions
This product can convert vibrational energy into thermal energy by controlling thermal motion of polymer chains in the glass transition temperature range.
〇Examples of utilization functions
・Vibration attenuation → damping properties, soundproofing properties, shock absorbing properties
・Flowability to deformation → binding capability and flowability
・Base material permeation using heat melting → thermal motion
Typical Properties
| Item | ACRYSETTM VA Series |
|---|---|
| Appearance | Milky white liquid |
| Solid content | 50 ～ 60％ |
| Solvent | Water only |
| pH | 7 ～ 9 |
| Minimum film-forming temperature（℃） | 0 ～ 40℃ |
| Viscosity (25℃) | ＜2000mPa・s |
| Particle size | 100 ～ 300nm |
| Polymer type | Acrylic type |
Features and Properties
・High loss tangent（tanδ）：2 ≦
・Freedom of polymer design : enables polymer design according to usage temperature
・High dispersibility : easy dispersion of additives (pigments, etc.)
Superior formulation flexibility, productivity, quality stability, and workability
・VOC-free : supplied as a water-based polymer
Manifests stress relaxation responsive to various temperature ranges and frequencies by adjusting the particle structure, molecular weight and its hydrophilicity/hydrophobicity of the acrylic emulsion while maintaining low viscosity
Damping properties
| Damping properties | General acrylic polymer | ACRYSETTM VA Series | ||
|---|---|---|---|---|
| For low temperature | For medium temperature | For high temperature | ||
| Tg [℃] | 37 | 6 | 30 | 49 |
| tanδ | 1.2 | 2.2 | 2.9 | 2.7 |
Examples of Applications
Can be used as damping paint by adding pigments and alkali soluble thickeners.
Due to its superior pigment dispersibility and easy adjustment of paint viscosity derived from the dynamic viscoelasticity of the polymer, it can be applied to any location to achieve high-level damping properties.
