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Factory direct sale Zhejiang FengHong organic clay

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A brief introduction of organic bentonite?

Organic bentonite has been applied to production, more than 30 years in our country. It is a kind of organic ammonium compound, montmorillonite/bentonite as raw material, the use of bentonite in the montmorillonite layer plate structure and swelling in water or organic solvent dispersion gel properties of clay, through ion exchange layer of organic coating agent technology.

Organic bentonite in all kinds of organic solvents, oils, can form gel, liquid resin has good thickening, thixotropy and suspension stability, high temperature stability, lubricity, film-forming property, water resistance and chemical stability, especially in the paint industry has important application value. In addition in printing ink, grease, metallurgy, oil drilling, and polymer industry also has a wide range of applications.

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?Organic bentonite used in the paint

"FengHong" brand organic bentonite in paint can be made from gel to use, can also add powder directly to use, but still play the best performance to make preliminary gel as well.

the gel to join method which:

(1), poor wettability of the resin and the thixotropy by pre - gel to join method is especially suitable for grinding system.

(2), pre -?gel preparation:

Ratio of pre -?gel components: solvents, 87, 8-10 organic clay, polar activator: 95% methanol or ethanol 3-4 (generally in the process of the gel concentration of 8-10%)

Preparation methods:

(1) the organic bentonite mixed with solvent, stirring for 10 minutes, make its full moisture.

(2) add polar activator, continue to stir for 5 minutes, which was dispersed fully expand.

(3) if it is to be made to pump low viscosity gel beforehand, in the process of the gel or high solid content can add 1 or 2 copies of surface active agent, mixing evenly, the lower the gel viscosity.

Method of use:

(1),?poor wettability of epoxy, polyester, short oil alkyd resin, acrylic resin, and share, surfactant and thixotropy abrasive acceptable cases operation according to the following procedure:

A, mixed with paint or solvents

B, add organic bentonite gel, toss to combine.

C, add pigment, mixing dispersion.

D, dilute

(2), ?for the thixotropy of grinding material, poor wettability of resin system, according to the following:

A, mixed with paint or solvents

B, adding surfactant mixed (if used).

C, add pigment, distribution of stirring dispersion and grinding to the required fineness.

D, gel, continue to spread to the required fineness.

E, diluted to the required viscosity.

Organic bentonite powder directly to join method:

1, when you need to use the surfactant dispersed pigments, and thixotropy abrasive operation is acceptable in the following order:

A, mixed with solvent paint agent stirring

B, add organic bentonite rheological modifier, 10 minutes, mixing the organic bentonite fully wet

C, stir in polar activator, such as no restrictions on the use of mixed 5-10 minutes

D, adding surfactant (e.g., soy lecithin, soap drier, etc.)

E, add pigment, mixing dispersion to the required fineness

F, diluted to the required viscosity

2, when no surfactant dispersed pigments, the polarity as activator in the late add pigment dispersion and add about 10 minutes, pigment dispersion.

3, when using the poor wettability of resin system (epoxy, polyester, short oil alkyd and acrylic resin, etc.) and surface active agent and using, thixotropy under the condition of abrasive materials can be accepted, in the following order:

A solvent, added

B, add organic bentonite rheological modifier and toss to combine to make it completely wet

C, to join the polar activator and toss to combine, make its expansion and dispersion

D, stir in resin mix

E, and surfactant mixture.

F, pigments, mixing dispersion to the required fineness

G, diluted to the required viscosity

The requirements of the organic bentonite used:

1, whether the gel method or joining method directly, all needs to make organic bentonite can get sufficient moist, scattered, card room structure of thixotropic colloid formation, usually best to join the polar activator into 95% methanol, 95% ethanol, propylene carbonate, its dosage W for 40-50% of organic clay.

2, in order to make the pigment dispersion, often need to add surfactant, but always after adding polar activator to join, otherwise will affect the fully dispersed organic bentonite.

3, in order to ensure that organic bentonite fully dispersed, polar activator must in organic bentonite wet after joining in the system, not to join the first polar activator add organic clay

4, must have enough water to develop into the mesh structure of organic bentonite gel, water molecules is a bridge to form a mesh structure, so the organic bentonite not excessive and dry general moisture content 3% advisable, polar activator should not be used without water, containing 5% moisture as appropriate (i.e., 95% polar activator)

5, and paint the dispersing equipment of organic bentonite is larger, the effective use of relationship to avoid "dead center"

6, organic bentonite best lasts for half a year, shall not be affected with damp be affected with damp, shall not be stored in more than 60 degrees Celsius environment.

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