Bentonite clay for foundry | Camp Shinning Organoclay
Bentonite clay for foundry is in-organic treated bentonite clay which is utilized in foundry to bind the sand grains into desired shapes. Bentonite clay helps in retaining the mechanical shape of the mould by making the particles of sands adhere to it and also making the surface impermeable. Strength and fusion point are the two important properties desired for selecting bentonite. Primary use is in the production of non-ferrous castings. Mixing ratio depends on the sand fineness and its quality, impurities, clay particles and fineness of sand will affect the Green strength properties.
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Composition Organic derivative of a montmorillonite clay
Appearance Fine powder, white
Moisture content (105℃,2hr) ≤3.5%
Loss on ignition (1000℃) 40%-44%
Bulk density 0.40~0.60g/cm3
Fineness (<74μm, %) ≥99.8%
Dispersion fineness (μm) ≤10
High purity, low silica content.
Easy dispersing, fine particle size.Easy to use, no need to pregel
High viscosity and high thixotropic.
Wide application range. It can be applied in almost all resins and solvents
Gel is very transparent and of light color.
Oilfield chemicals Organophilic clay are used in the following applications:
Paints including top grades paint, decorative paint, industrial paint, traffic paint etc.
Oil Drilling Mud
All safety information is provided in the Material Safety Data Sheets for Zhejiang Camp-Shinning New Material Co., Ltd.
Kraft paper bag with PE liner or multi-wall paper sacks or customized. 25kg/bag or 22.68kg/bag or customized
Thixotropic gel has a shelf life of 2 years, and should be stored in ventilated cool and dry place.
The information on use is based on data which are believed reliable, but any recommendation or suggestion made is without guarantee or warranty, since the conditions of use are outside our control. All products are sold on the conditions that purchasers shall make their own tests to determine the suitability of such products for their purpose and that all risks are assumed by user. We disclaim any responsibility for damages resulting from careless or improper handling or use. Nothing herein is to be taken as permission, inducement or recommendation to practice any patented invention without a license.
In aromatic solvent, the recommend activator is methyl acohol/water (95%/5%)/ acolhol/water (95%/5%), the dosage is 33%-45% based on the weight of CP-720B.
In mineral oil (such as 200#), white oil, diesel oil, the recommend activator is methyl acohol/water (95%/5%)/acolhol/water(95%/5%), the dosage is 33%-60% based on the weight of CP-720B.
Procedure of adding gel:
Charge solvent and resin to mill
Slowly add the gel
Wetting agent (if required)
Disperse completely to desired fineness
Dilute to desired viscosity
Add directly with powder
Charge solvent and resin
Add Thixotropic clay slowly
D .Add polar activator (if necessary)
Disperse 10-15min at high speed
Add wetting agent and other additive
G.Grind and next procedure
It can be added directly in powder under high shear condition. The addition is recommended to be before grinding procedure to get the best effectiveness. Addition level is commonly 0.1%~2.0%. If add polar activator and make pre-gel, better efficiency can be achieved.