SUNSPHERES™ 03.0

1 of 7 products in this brand

Optically clear, solid fused amorphous silica microspheres specially engineered for optimum dispersion in paints, coatings, inks, adhesives, and thermoplastics, including UV curable compositions. These microspheres increase corrosion and impact resistance, reduce shrinkage, improve adhesion, and enhance surface qualities including mar and scratch resistance. Ideally suited for specialty applications where mechanical and rheological properties are required. Median particle size of 3 to 4 microns, with a particle size range of 0.5 microns to 92% passing 22 microns.

Functions: Filler

Chemical Family: Silica

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

Chemical Family
Composite Materials Functions
Plastics & Elastomers Functions
Particle Image

SUNSPHERES™ 03.0 - Particle Image

Features & Benefits

Light Transmission

The SUNSPHERES™ 03.0 efficiently transmit ultraviolet and visible light from 200 nanometers through the visible and near IR spectrum. These microspheres space pigments and promote efficient, thorough curing by ultraviolet radiation.

Applications & Uses

Applications
Compatible Substrates & Surfaces
Cure Method
Use Level
3 to 50
Applications
  1. Reduced shrinkage/improved adhesion.
  2. Impact strength.
  3. Anti-corrosion barrier.
  4. Mar, scratch, and abrasion resistance.
  5. Optical effects/color density.
  6. Oenhanced UV curing.
Sizing & Use

SUNSPHERES™ 03.0 have a median particle size of 3 to 4 microns, with a particle size range of 0.5 microns to 92% passing 22 microns. Recommended dosages are 3 to 50% by weight of total weight of formulation. Due to their low surface area, SUNSPHERES™ 03.0 are easily dispersed.

Properties

Physical Form
Shape
Solid, Spherical to Well Rounded Microspheres
Physico-Chemical Properties
ValueUnitsTest Method / Conditions
Specific Gravity2.2
Hardness (Mohs)7
Refractive Index1.458nD
Softening Temperaturemax. 10000°C
Strain Pointmax. 6000°C
Coefficient of Thermal Expansion0.48 x 10-6/K
pH Value5
DC Resistivity1 x 10^8
BET Surface Area1.3 – 2.2sq.m/g
Oil Absorptionmax. 10
Structure/Amorphous SiO2 Contentmax. 99%
Crushing Strengthmax.. 60,000 psi
Median Diameter~3.0microns
Particle Size Distribution
ValueUnitsTest Method / Conditions
22 Microns92%
11 Microns73%
5.5 Microns50%
2.75 Microns20%
1.375 Microns2%
0.5 Microns0%
Shape

Solid, Spherical to Well Rounded Microspheres