Characteristic
LWsphere®Poly-Spacer are monodisperse microspheres composed of highly cross-linked polymers, with very narrow particle size distribution, which can precisely control the thickness of the box, without causing damage to the substrate, and with higher clarity. It is widely used in LCD and PDLC fields.
Feature
Very uniform particle size with a coefficient of variation CV of less than 3.5%
Good monodispersity, no overlap or agglomeration
High purity, no pollution
High mechanical strength
Excellent heat, cold and chemical resistance
Physical property | ||
Average particle size, µm | ± 0.05 | Coulter Particle Size Analysis Counter |
Particle size distribution CV value | 1.0% -3.5% | Coulter Particle Size Analysis Counter |
10% Modulus of Elasticity, kgf/mm2 | 300-700 | Shimadzu MCT210 |
Specific gravity, g/cm3 | 1.08 | Multi-Volume Density test |
Thermal Decomposition Temp,℃in air | 340 | TGA |
Refractive Index | 1.59 | 20 ºC, λ=589 nm |
LWsphere®Poly-Spacer is of very uniform particle size
The particle size and distribution of LWsphere®Poly-Spacer were determined using internationally recognized testing equipment (Beckman Coulter Counter Multisizer) and methods. To ensure accurate results, each measurement is calibrated with NIST traceable standard particles. The coefficient of variation, Coefficient Value (CV)%=(standard deviation/average diameter)x100, was controlled below 3.5%.
LWsphere®Poly-Spacer is of high purity, no pollution
The ion content of LWsphere®Poly-Spacer will directly affect the quality of the liquid crystal, so we use deionized water in the preparation and cleaning process, and the products are regularly sampled for inspection |
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Substance | Control Limit | Test Method |
Fe | ≤2ppm | ICP Spectrometer |
Ca | ≤2ppm | |
K | ≤2ppm | |
Na | ≤2ppm | |
Cl | ≤1ppm | Ion Chromatography |
LWsphere®Poly-Spacer meet the request of RoHS
LWsphere®Poly-Spacer do not use any elements prohibited by the EU RoHS directive in the production process, and do not contain organic substances and heavy metals prohibited by RoHS |
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Substance | Test Result |
Cd | N.D. |
Pb | N.D. |
Hg | N.D. |
Cr6+ | N.D. |
PBBs | N.D. |
PBDEs | N.D. |
LWsphere®Spacer contain two series of products. | ||||
Diameter | CV | Increment | Application | |
LWsphere®Poly-Spacer | 2.0-100µm | ≤3.5% | 0.1µm | TN, HTN |
LWsphere®Poly-Spacer | 2.0-7.0µm | ≤3.0% | 0.1µm | HTN, STN, FSTN |
Packaging sizes
1/5/10/25/50/100ml