Chemical Auxiliary
Description
Natural high whiteness barium sulfate Paint grade Baso4 Cas NO 7727-43-7
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Specifications:
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1. ?Liangjiang Brand -?high whiteness barium sulfate Paint is a special chemical synthesis process, the use of special filtering technology and special surface treatment technology of production, high whiteness, no black particle, good dispersion, etc.This product is white powder material, non-toxic, odorless, insoluble in water, acid, alkali and organic solvents, soluble in hot concentrated sulfuric acid, only not to any gas reaction.So is excellent weather resistance, corrosion product.Product 1250 mesh, 3000 mesh, 5000 mesh, 5000 mesh, 12500 mesh, 15000 mesh six kinds of specifications.
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Main features:
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(1)?White degree is high, use with titanium dioxide has a coordinating role.
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(2)?Cardiac uniform particles small, narrow particle size distribution, close to import titanium dioxide.
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(3)?Filled with special surface treatment, good dispersibility, high affinity with the resin.
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(4)?Cardiac function isolation between titanium dioxide particles, titanium dioxide particles from distance ? ? ? ?to each other, give full play to the performance of the titanium dioxide, improve the efficiency of cover.
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(5)?Derive product purity, excluding black particles, to ensure product purity.??
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?Application:
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1,?powder coating, powder coating can be enhanced by sex and light flowing property, and with all the pigment has good compatibility, can improve powder coating in spraying process to achieve the ideal coating thickness, improve on powder rate, reduce the dosage of powder coatings, powder coatings is will choose products.
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2, in terms of coating, the product used in conjunction with titanium dioxide by certain proportion, can make the chain more effectively play its cover performance, reduce the dosage of titanium pigment, especially suitable for automotive paint, high-grade exterior wall coating is used.At the same time on the resistance to pulverization performance has improved significantly.
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3. Basic Data:
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Chemical Name: | ?high whiteness barium sulfate Paint |
CAS #: | 7727-43-7 |
EINECS #: | 231-784-4 |
HS #: | 28332700 |
Appearance | White Powder |
BET | 4.0-4.4g/cm3 |
Surface treatment | no |
Factory | Shanghai liangjiang titanium white products co.,ltd |
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4. Typical technical indicators:
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ITEMS | 3000 | 1250 |
BaSO4 %≥ | 98 | 96 |
105°C valatiles %≤ | 0.2 | 0.2 |
Water solubles %≤ | 0.2 | 0.25 |
Fe %≤ | 0.003 | 0.04 |
Whiteness ≥ | 94 | 93 |
? Oil absorption(g/100g) | 10-15 | 15-20 |
PH (100g/L) | 6.5-8.5 | 6.5-8.5 |
Residue (45μm sieve) %≤ | 0.005 | 0.1 |
Particle sizes(um) | d50 2.5±0.2 | ??????? d50 3.8±0.5 |
d97 6.8±0.6 | d97 12±2.0 |
Mesh: 1250,2000,3000,6000,8000,12500 |
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Description:
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1. Shanghai liang jiang titanium dioxide chemical products co., LTD. Production of effective control of the highlights in the production of barium sulfate crystal shape and particle size, has the high pure degree, excellent dispersion and not easy to precipitate is can& acute;t be matched by other conventional packing.In addition, the & quot;bright jiang card& quot; highlights barium sulfate has very low oil absorption, can improve the critical pigment volume concentration of coating, reduce the dosage of resin binders accordingly.& quot;Bright jiang& quot; brand high relatively cheap barium sulfate can replace some expensive titanium pigment, coating product cost can be decreased efficiently.Therefore, choose to use & quot;bright jiang card& quot; highlights barium sulfate, can not only improve the quality of products, also can reduce the cost of production.
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2, Liangjiang brand ultrafine barium sulfate production process:
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Applications:
# # paint, paint production of barium sulfate characteristics requirements.
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USAGE | REQUIREMENTS |
Powder Coatings | High whiteness, easy dispersion, black spots, and resin have good affinity, improve the powder rate, can significantly improve the surface gloss, leveling, hardness, impact resistance, adhesion. |
Emulsion Coatings | Good particle size distribution, good dispersion and anti sink, adding high gloss latex paint does not affect the gloss, color concentration, bright degree. |
anticorrosive?paint ? | Stable chemical stability, good dispersion, oil absorption, with the space effect, reduce the amount of pigment. |
Plastics paints | Super fine grain size and grain size distribution, good dispersion and anti sink, add a small amount of plastic paint, increase the film hardness, add paint does not affect the gloss, color density, brightness, effectively reducing the use of resin and pigment, unable to add traditional packing of high-grade paint add add the product has excellent effect |
Paper paints? | Introduced in can increase the gloss, liquidity, such as art paper in white and transparent colored paper. Part of titanium dioxide available double barium sulfate instead of without losing its luster. |
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Barium sulfate as an extender pigment is widely used in coating, to improve the coating thickness, wear resistance, water resistance, heat resistance, surface hardness, impact resistance and other plays a very important role. In addition, barium sulfate in the wavelength range of 300 ~ 400 lm with high reflectivity, can protect film from light aging, is an effective and inexpensive white inorganic light stabilizer.
? Made by a special process of ultrafine barium sulfate has a lot of other similar products do not have the features. The needle crystal structure makes it a good smoothing agent, and can enhance the coating property, it can be used in the cleaning type as strengthening agent in the coating;Because of its low oil absorption, a high degree of filling amount, so can make the coating cost reduction, can be used in waterborne coatings, primer and intermediate coating, oil paint, etc. Use it instead of 10% ~ 25% of titanium dioxide in water paint, white degree increase as a result, covering power did not
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1.1 comparison of film whiteness and hiding power
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The production formula (with superfine barium sulfate instead of 15% titanium dioxide) and the original production formula under the same conditions of the plate test data as shown in Table 1
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Effect of barium sulfate on the whiteness of coatings
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Samples | ?Covering power g/㎡ | whiteness | Whiteness index |
Original | 138.5 | 87.89 | 79.8 |
Present | 129 | 87 | 80 |
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From the table 1, we can see that the addition of ultra-fine barium sulfate coating, the hiding power but increased, the basic unchanged whiteness.
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1.2 film artificial aging test
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Put the different formulations of spray paint brush on the cement board, in the sunlight aging machine for artificial aging test. As a result, original production formula discoloration time for 580 hours, existing production formula discoloration time is 12 hours, after adding superfine barium sulfate the weather resistance of paint film can be significantly improved.
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1.3 coating at room temperature results
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Due to the small particle size of ultrafine barium sulfate, the agglomerated morphology also determines the density of not less than the general barium sulfate, so it overcomes the ordinary barium sulfate precipitation, easy lamination defects. The latex paint test samples placed a year without obvious stratification, settlement and the stability is good.
In addition, the film in the film in the water resistance, wet scrub, anti pollution, etc..
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1.4?to 1 ~ 8 Lm barium sulfate shattering particle size, can replace part of titanium dioxide when applied in latex paint, whiteness And hiding power did not decline, although after smashing the barium sulfate is fine, but it is still on the agglomeration of the agglomeration of medium sized particles. Because of precipitated barium sulfate in formation, the crystal size is between 0.2 ~ 0.8 Lm, the agglomeration of particles clearance is too small, so that scattered resin could not enter into the agglomeration in the body, the results when the paint film after drying, these small air gap being preserved, in the form of air, thus improve the refraction between the various components. In this film, the material& acute;s refractive index is as follows: 2.76, titanium white polymer is 1.55, the water is 1.33, 1.0 air in the wet film And dry film, mainly from the following several refractive index difference determines the size of the covering power: titanium white - polymer = 2.76-1.55 = 1.55, titanium white - water = 2.76-1.33 = 1.33, titanium white - packing = 1.11, titanium white - air = 1.76. Thus it can be seen that as a result of the existence of ultrafine barium sulfate powder, after the coating film, in addition to other refractive index difference, And the difference of the titanium white And the water& acute;s refractive index. After film into a dry film, due to the evaporation, the micro air bubble in the paint film, And produced between titanium dioxide and air refractive index difference, objectively increased the scattering ability of titanium dioxide, thereby increasing the hiding power, so superfine barium sulfate can replace part of titanium dioxide, and hiding power is not decreased.
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Shanghai Liangjiang Titanium White Product Co., Ltd.
Chloride Process Titanium Dioxide,Rutile Titanium Dioxide,Anatase Titanium Dioxide
Address: Room 302, Building No.8,
Shanghai, Shanghai
China, 200000
Tel: 86-21-69985235
Fax: 86-21-39565974
