Nano Spherical Silica Filler Liquid-Phase Synthesis CAS 7631-86-9, Monodisperse for OCA Optical CPO & Nanocomposite
Liquid‑phase‑synthesized monodisperse nano spherical silica filler (CAS 7631‑86‑9). It is fabricated through wet‑chemical liquid‑phase synthesis route to achieve extremely narrow particle‑size distribution and well‑defined spherical morphology without thermal‑fusion bead defects. This monodisperse silica filler is intended for OCA optical adhesive, optical‑grade CPO semiconductor packaging and high‑performance resin nanocomposite, optimizing thermal expansion, mechanical modulus and preserving h
Product Detail PageNano Spherical Silica Filler Liquid‑Phase Synthesis CAS 7631‑86‑9, Monodisperse for OCA Optical CPO & NanocompositeThis nano spherical silica filler is produced by controlled liquid‑phase wet chemical synthesis rather than high‑temperature flame spheronization. Precise reaction parameters enable monodisperse particle population with extremely narrow particle‑size distribution, uniform smooth spherical surfaces and consistent amorphous silica structure. Hard aggregated particles and irregular sintered beads commonly found in flame‑made nano silica are largely eliminated.
For OCA optical adhesive applications, the monodisperse spherical silica is dispersed within acrylate or silicone optical adhesive matrix. Thanks to uniform particle dimension, light‑scattering effect is minimized, which helps maintain high visible‑light transmittance of the cured OCA layer. The rigid silica nanoparticles effectively reduce thermal curing shrinkage, elevate composite modulus and suppress thermal expansion of the optical adhesive. It mitigates warpage and stress‑induced distortion of bonded optical assemblies.
When deployed for optical‑grade CPO semiconductor packaging, this filler is incorporated into transparent encapsulation resins for optoelectronic chips. It balances thermal expansion mismatch between chip and encapsulant under fluctuating operating temperature, while avoiding haze formation that would interfere with light transmission of optoelectronic devices.
In resin‑based nanocomposite systems, monodisperse nano silica reinforces polymer matrix, improving hardness, scratch resistance and dimensional stability without sacrificing resin toughness. Raw‑material purification strictly restricts heavy‑metal and ionic contaminants, preventing electrical migration and light‑absorbing impurity discoloration inside optical composites.
Silane surface modification can be customized to improve wetting and interfacial bonding between silica nanoparticles and different polymer matrices, restraining nanoparticle re‑agglomeration during compounding. Since fine nano particles readily absorb ambient moisture, hermetic low‑humidity sealed storage is mandatory. Cross‑contamination with flame‑fused silica grades must be avoided during powder handling and batching. This liquid‑phase synthesized monodisperse nano spherical silica filler serves as a premium functional inorganic filler for OCA optical adhesive, optical CPO packaging and high‑end resin nanocomposite materials.
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