Organoclay Suspension for Coatings | Anti-Settling Performance of CP-10
What is Suspension Performance in Coatings?
In coatings and paint systems, suspension performance refers to the ability to prevent pigment and filler settling during storage.
Unlike simple viscosity measurements, suspension performance evaluates how well a formulation maintains stability under static conditions, which directly affects:
Storage stability
Anti-settling behavior
Redispersibility
Application consistency
A high-quality organoclay forms a three-dimensional thixotropic network, keeping particles uniformly suspended.
Why Suspension Testing is More Reliable than Viscosity | Organoclay Suspension for Coatings
Many coating formulations rely on viscosity as a control parameter. However:
Viscosity reflects flow behavior under shear
Suspension reflects stability at rest
Organoclay Suspension for Coatings
👉 A system may have high viscosity but still experience pigment settling.
Therefore, suspension performance testing provides a more practical and realistic evaluation of long-term coating stability.
H2: Scope of This Test Method
This method is designed to evaluate the anti-settling performance of Organoclay CP-10 in solvent-based coatings.
Applicable systems:
Industrial coatings
Solvent-based paints
Pigment dispersion systems
Standards Reference (EEAT强化)
This method is developed based on practical application requirements and aligned with:
GB/T 27798
HG/T 2248
👉 Suspension performance is introduced as a key additional quality indicator, while traditional xylene viscosity is no longer used as the primary control metric for this application.
Technical Specification of Organoclay CP-10
Organoclay Suspension for Coatings
Parameter Specification
Suspension Performance (ml/12h) 43 – 48 ml
Appearance Light yellow fine powder
Reference standard sample: 48 ml/12h
Suspension Test Method for Coatings (12-Hour Method)
Equipment
100 ml stoppered graduated cylinder (accuracy: 0.01 ml)
High-speed disperser
Electronic balance (accuracy: 0.001 g)
H3: Materials
Industrial solvent (e.g., WS-3040 or equivalent coating solvent)
95% Methanol (activator)
Standard sample: Organoclay CP-10 (sealed, moisture-proof)
H3: Step 1 – Preparation of 1% Organoclay Gel
Add 98 g solvent into a container
Add 1% organoclay under 1000 rpm, disperse for 2 minutes
Add 1% methanol activator
Increase speed to 1500 rpm, mix for 10 minutes
👉 Cool the dispersion to 20–25°C
H3: Step 2 – Static Suspension Measurement
Transfer dispersion into a 100 ml cylinder (to 50 ml mark)
Seal the cylinder
Place on a stable, vibration-free surface
Record suspension volume after 4, 6, and 12 hours
👉 Final result = 12-hour suspension volume (ml)
Acceptance Criteria
Acceptable range: 43–48 ml/12h
Must be compared with a standard reference sample
H2: Appearance Evaluation Method
Place sample and standard sample on white paper
Flatten evenly
Observe under natural light
👉 Color should remain consistent between batches
Quality Control & Process Requirements
All production batches must meet 43–48 ml/12h
Products outside this range are not released for shipment
Process Change Control (EEAT关键点)
If any changes occur in:
Raw materials
Production process
👉 Customers must be notified in advance
👉 Shipment only proceeds after validation
Why High Suspension Organoclay Matters in Coatings
Poor suspension leads to:
Pigment settling
Hard sediment formation
Difficult redispersion
Inconsistent color and performance
Using high-performance organoclay enables:
✔ Excellent anti-settling properties
✔ Improved storage stability
✔ Consistent coating performance
✔ Better formulation reliability
Related Organoclay Applications
To learn more about related applications, visit:
👉 Organoclay for Paints and Coatings
👉 Rheological Additives for Coating Systems
👉 How to Choose Organoclay for Solvent-Based Systems
Organoclay Suspension for Coatings
Frequently Asked Questions (FAQ)
What is the ideal suspension value for coatings?
Typically, 43–48 ml/12h indicates good anti-settling performance in solvent-based systems.
Why is methanol used in the test?
Methanol acts as an activator, helping organoclay form a proper gel structure.
Can viscosity replace suspension testing?
No. Viscosity alone cannot predict long-term storage stability.
How to improve suspension performance in coatings?
Optimize dispersing conditions
Use proper activators
Select high-quality organoclay
Request Technical Support or Samples
Looking for reliable organoclay for coatings?
We provide: Organoclay Suspension for Coatings
Stable suspension performance (batch-controlled)
Technical support for formulation optimization
Fast sampling and global supply
👉 Contact us now to get samples or technical data sheets.