rheology modification
Organoclay bentonite is a type of rheological modifier. Organophilic clay is a process of modifying montmorillonite through quaternary ammonium salts to give it better control over rheological properties.
Organoclay is a clay-mineral rheology modifier that provides shear-thinning behaviour and thixotropic recovery in solvent-based systems where cellulosic or polyurethane thickeners are incompatible; the full product range and classification are at rheology modifiers — organoclay classification and performance overview. Rheological additive types, performance comparisons, and selection criteria across different system polarities are covered in rheological additives — types, performance, and selection guide. To source clay-mineral rheology modifiers directly from the manufacturer, see organoclay supplier — clay-mineral rheology modifier factory.
rheology modification
rheology modification
Organiclay bentonite not only enhances the thixotropic and rheological properties of chemicals but also improves its anti-settling and anti-sagging properties.
It is widely used in paint coatings, adhesives, and drilling fluids. Organic clay bentonite appears as a white powdery substance that blends and mixes highly with other components in the formulation.
This enhances the suspension performance of the formulation and improves its rheological properties, thus it is applied in personal care products such as gaming ink and cosmetics.
Rheology modification effectively prevents the separation of ingredients in the formulation, particularly in paint coatings where it controls pigment settling, keeping it suspended. This effect is achieved both in water-based and solvent-based systems.
When organic bentonite is incorporated into your formulation, it stabilizes the performance of various components, thereby enhancing the stability of other product properties.
It also improves the viscosity, suspension stability, and thixotropic behavior of water-based and solvent-based formulations, enhancing anti-sagging properties and promoting better leveling during application, preventing pigment settling, and ensuring the final coating’s appearance and performance.
In drilling fluids, the use of organophilic clay bentonite has become indispensable in the petroleum and natural gas industry. It enhances the suspension performance of drilling fluids, maintains good thixotropic behavior, prevents collapse of the drilling platform, and effectively removes debris from the wellbore.
In inks and adhesives, it enhances the rheological properties, aiding in viscosity and thixotropic control, thus ensuring the stability of the entire formulation.
After years of research, production, and sales of Organoclay bentonite, it has penetrated many industrial sectors.
For example, in the cosmetics industry, it is applied in nail polish and creams, while in the oil field drilling industry, especially in some drilling and fracturing fluids, it is used as a suspending agent.
Rheology modification is packaged in 25-kilogram bags, with 16 tons on pallets fitting in a 20-foot container, and 25.5 tons on pallets fitting in a 40-foot container.
During the use of organic bentonite, it is recommended to add polar activators such as propylene carbonate, methanol, and ethanol to promote better dispersion. Pre-gelation can also be done to enhance dispersion. The longer the colloidal is left after pre-gelation, the more stable its effect and performance will be.
If you require water-based bentonite as a thickening rheological agent, we can provide you with suitable models. They can be used in inks, water-based wood coatings, adhesives, water-based paints, building mortar, various emulsions, daily chemicals, marine paints, etc. In water or water-oil hybrid systems, even under low-shear conditions, it can still disperse, appearing transparently.
The recommended dosage is generally between 0.2% to 3%, which shows significant anti-settling performance. In various systems, you can also directly add dry powder to improve its suspension.
Water-based rheology modification is suitable for various oil-in-water or water-in-oil systems and can achieve complete dispersion even under low-speed dispersion conditions.
Properties of rheology modification
Composition Inorganic modified montmorillonite clay
Appearance Fine powder, white
Moisture content (105℃,2hr) ≤12%
Bulk density 0.60~0.80g/cm3
Viscosity, 10% in water, mPa.S 10000-13000
Fineness (<74μm, %) ≥98%
Advantages
- High gelling effectiveness, CP-WBS can form gel even at 2% in water
- Easy dispersing
- Its gel is transparent and of light color
- Prevents pigment settling
- High thixotropy, Good anti-sag property
Application of rheology modification
Organoclay is used in the following applications:
- Putty
- Antiseptic
- Industrial water reducible paint
- Toothpaste and tooth polish
- Cream and Lotions
- Emulsion paint
- Pigment and blunge water
- Water-borne sealant, adhesive
- Welcome to inquire about our products and ask for free samples. We will do our best to provide you with the best service.
