PVA Powder – Produced by Liquid Nitrogen Cryogenic Grinding Process
Our PVA powder is manufactured using an advanced liquid nitrogen cryogenic grinding process:
PVA pellets are chilled with liquid nitrogen at -196°C to below their glass transition temperature, making the tough material completely brittle before grinding. After being crushed, it undergoes strict sieving and classification.
The entire process is carried out at low temperature in a closed system, no heat exposure, no thermal degradation.
Key Advantages:
1. Optimized Particle Morphology
The powder features uniform spherical or spheroidal particles, providing excellent flowability. This ensures smooth, clog-free feeding – which is especially critical for automated production lines.
2. Narrow Particle Size Distribution
The process allows precise control within the target mesh range, minimizing both oversized particles and ultra-fine fines. The result is highly uniform powder consistency, ensuring stable dissolution rates and dispersion performance batch after batch, fundamentally guaranteeing product quality.
3. Intact Molecular Structure & Stable Performance
Because the entire grinding process is carried out at cryogenic temperatures, the PVA molecular chains remain completely intact. Key properties such as degree of hydrolysis, degree of polymerization, adhesion, and film-forming ability are fully preserved. This ensures consistent performance across every batch and long-term quality stability for your end products.