Overview of Arkema Crayvallac LV, Micro Powder Polyamide Wax Rheological Additive:
Arkema CRAYVALLAC LV It is a new generation of high-performance micronized polyamide rheological additive, specifically designed for ultra-high solid content and solvent-free systems. The main features of CRAYVALLAC LV are:
100% active ingredient
Endow the system with shear thinning rheological properties, and its viscosity gradually recovers over time
Easy to activate, activation temperature 45-65 ℃
Excellent anti sagging performance
Very good anti sinking performance
Excellent storage stability
arkema LV Very easy to activate, especially to solve the problem of viscosity storage stability of existing rheological agents in solvent-free systems.
Arkema Crayvallac LV, recommended dosage of micro powder polyamide wax rheology additive:Anti sinking and anti current hanging: 0.5-1.5%
| Product Code | type | Addition amount (wt%) |
| crayvallac lv | Polyamide wax | 0. 3-2. five |
| Product specifications | Other properties |
Particle size distribution (Malven Mastersizer)
Laser Particle Size Distribution Analyzer (CR 005) | Specific gravity (25 ℃, g/cm3), (CR006) | zero point nine nine |
DV.1 min
DV.9 max | 1.8µm
20.0µm | Bulk density, g/cm3,
(CR 016) | 0.4-0.6 |
| Capillary melting point determination (CR 003) | 120-140℃ | appearance | Grey white powder |
Summary of the method for adding micro powder polyamide wax rheology additive, Crayvallac LV:
● Disperse at high speed together with the base material, dispersion temperature: 45-65 ° C
Arkema Crayvallac LV, a micro powder polyamide wax rheological additive, detailed addition method and steps:
Arkema CRAYVALLAC LV It is best to add it to a high-speed disperser and use it for activation. High speed dispersants can provide the ideal shear force and temperature required for activation and dispersion.
arkema LV is usually added together with resin during the grinding and filling stage. Maintaining a temperature of 45-65 ℃ during high-speed dispersion can ensure the full activation of CRAYVALLAC LV, and the optimal activation temperature is 55-65 ℃. After reaching the activation temperature, high-speed dispersion is still required for 20-30 minutes.
The high-speed disperser is the most ideal dispersing equipment because it can provide activated ArkemaThe required shear force and temperature for LV to fully activate CRAYVALLAC LV. The activation process is a process of transforming CRAYVALLAC LV from a powder state into a fibrous network structure with interactions. It is precisely this network structure that ultimately endows the system with shear thinning properties. This shear thinning characteristic provides the ability to maintain high viscosity under low shear conditions, thereby achieving excellent anti settling performance; During construction, that is, under high shear conditions, the viscosity of the system will decrease. The ultimate result is that the system has good anti sinking properties and is easy to construct.
After the construction is completed, the system returns to a low shear state, and the network structure in the system is re formed. The viscosity of the system gradually recovers over time. The process of gradually recovering viscosity over time is called "thixotropy", which enables the system to achieve good leveling and anti sagging performance after viscosity recovery.
Given the different formulation systems, production processes, and application fields, we strongly recommend using CRAYVALLAC LV Conduct a comprehensive evaluation to ensure that it meets the requirements. In addition, when coating construction is carried out under poor ventilation conditions, or when the substrate temperature is too high, or during hot spraying, additional attention may be required.
arkema CRAYVALLAC SUPERStorage requirements:
Arkema CRAYVALLAC LV should be stored in its original packaging bag, placed in a dry and temperature range of 5-30 ℃, and protected from direct sunlight or freezing. The product is valid for four years when stored under the above conditions.
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