High Viscoelastic Polymers, ACRYSET™ VA Series Acrylic polymer, dispersed in water
- Main Applications
Damping materials, soundproofing paints, shock absorbing materials, low temperature fixatives
- 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 conformability.
Basic Physical 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 polymer based |
Appearance
It is a milky white liquid with relatively low viscosity and high fluidity.
Function (Mechanism)
This product can convert vibrational energy into thermal energy by controlling thermal motion of polymer chains in the glass transition temperature range.
By utilizing our unique polymer design and synthesis technology, we can meet a variety of customer needs, including vibration damping, soundproofing, and shock absorption.
〇Examples of Functional Applications
- Vibration attenuation → damping properties, soundproofing properties, shock absorbing properties
- Flowability to deformation → binding capability and conformability
- Thermal motion control → adhesion through heat-induced permeation into the base material
Features and Properties
- High vibration damping performance:
Efficient conversion of vibrational energy into thermal energy (tanδ ≥ 2). - Freedom of polymer design :
Enables polymer design tailored to specific temperature requirements. - High dispersibility :
Easy dispersion of additives (pigments, etc.).
Superior formulation flexibility, productivity, quality stability, and workability. - VOC-free :
Supplied as a water-based polymer.
Compatible with a Wide Range of Temperature and Frequency Conditions
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.
Lineup
We offer a lineup of resins with various glass transition temperatures (Tg) .
| 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 |
Features of high tan δ products
ACRYSET™ VA series with a high tanδ value undergoes a rapid transition from glass to rubber state and is sensitive to heat.
Compared with general high-Tg acrylic emulsions (low-tanδ type, Em), ACRYSET® VA (high-tanδ type) exhibits superior damping performance by efficiently converting vibrational energy into heat near its glass transition temperature.
Vibration Reduction with ACRYSET™ VA
It can be used as damping paint by adding pigments and alkali soluble thickeners.
Thanks to the ease of adjusting the paint viscosity, it can be applied and dried on any desired area to to achieve high-level damping properties derived from the polymer’s dynamic modulus.
Damping Characteristics of Vibration-control Coatings
Applications
