Adhesives & Sealants

?ElNECS No. 231-784-4 Low oil absorption, good liquidity Ultrafine Barium Sulfate Paint?

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Specifications:

? Liangjiang Brand-ultrafine barium sulfate is made through the advanced domestic and international production process, with ultra physical and chemical processing of selected barite. Thanks to the advanced production technology, the particle size is strictly controlled in a narrow range; the use of advanced drying technology, the physical properties of the products are excellent, of good dispersion and affinity in the application process with other intermediary agent. Coz of higher whiteness and purity, and no other mechanical impurities, our ultrafine barium sulfate is of the top quality and performance in domestic products. It can absorb X rays, gamma rays, and give the high material the density and surface finish, which is widely used in paint, ink, paint, plastic, rubber, chips, friction plate, ceramic, glass, electronics, cosmetics, medicine, food and other fields.

Main features:

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◇ High purity, good dispersion, high temperature resistance, good resistance to salt fog and weather resistance.

◇ Tiny particle sizes, improve the mechanical properties of the products.

◇ Low oil absorption, good liquidity.

◇ High whiteness, neutral color, color stability being help preserved for a long time and reduce the amount of the pigment.

◇ High surface gloss and brightness.

◇ Less impurities, no harmful substances, ensuring the safety and cleanliness of the surface coating products

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Application:

Widely used in paints, inks, coatings, plastics, rubber, chips, a friction plate, ceramics, glass, electronics, cosmetics, medicine, food and other fields.

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Basic Data:

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Chemical Name: | Superfine Barium Sulfate |
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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Technical Data (standard:Q/VAIP-2010)

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Items | Top Quality | Qualified |
BaSO4 % | ≥98 | ≥95 |
105 °C Volatiles % | ≤ 0.3 | ≤0.5 |
Water solubles % | ≤0.2 | ≤0.5 |
Moisture % | ≤0.15 | ≤0.15 |
PH (aqueous suspension) | 6.5-8.0 | 6.5～8.5 |
Oil absorption (based on different mesh) % g/100g | 10-30 | 10-30 |
Fe % | ?≤0.003 | ≤0.05 |
Whiteness % | 92-96 | 90-94 |
Mesh:325, 400, 600, 800, 1,250, 2,000, 3,000, 6,000, 8,000, 12,500 (customization available based on clients’ requirements) |
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Packing:

25 kg n.w. per plastic woven bag; or 500 kg / 1,000 kg as clients’ requirements.

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Transportation and Storage Safety:

This product is safe and harmless, white powder. To prevent the moisture in the process of transportation and storage, the goods is suggested to be placed in the cool, ventilated, dry place.

Avoid inhaling dust when handling, wash with soap and water if sticked and reference material safety technical data.

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Description:

? Liangjiang Brand barium sulfate use high grade barium sulfate ore, characterized by the characteristics of lower hardness, lower hardness, simple procedure and lower cost.. Due to the industrial production of precipitated barium sulfate of large size, high cost, and has a light shield, it was formed in the coating of dry paint film, often poor transparency, surface gloss is not good, bond is not secure. The performance of the above problems can be solved by using ultra fine barium sulfate.. Ultrafine barium sulfate refers to the average particle size of a particle in the range of 10~100Lm, and the particles of the following 100Lm are above 90%.. Its outstanding features are: excellent optical performance, good dispersion, good adsorption property. Ultrafine barium sulfate can also improve the fluidity of coatings and prevent precipitation and other characteristics..

3. Liangjiang brand ultrafine barium sulfate production process

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Applications:

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1. 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 paint, plays a very important role to improve the coating& acute;s thickness, abrasion resistance, water resistance, heat resistance, surface hardness, resistance to impact etc.. In addition, barium sulfate in the wavelength range of 300~400Lm have very high reflective, can protect the film from photoaging, is an effective and inexpensive inorganic white light stabilizer.

Using special technology is made of super fine barium sulfate has many other similar products do not have the characteristics. The acicular crystal structure make it become good flatting agent, and can enhance the coating leveling. It can be used for self clean coatings were used as reinforcing agent; due to the low amount of the oil suction, high filler content, so can decrease the cost of coating can be used for water paint, primer, intermediate coat, oil paint. Use it to replace the water paint in 10% ~ 25% of titanium dioxide. The results improve the whiteness, hiding power did not decline.

1.1 comparison of film whiteness and hiding power

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.

1.2 film artificial aging test

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.

1.3 coating at room temperature results

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..

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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?1. The?quality?request?of?barium?sulfate?for?the?production?of?modified?plastics,

?transparent?filler?and?masterbatch.

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characteristic | Performance requirements |
High gloss | Has the ultra good dispersibility, glossiness and liquidity. |
Good chemical stability | Can significantly improve product surface gloss and the tensile strength, thermal conductivity, wear resistance, weather resistance, reducing forming shrinkage, reduce the friction coefficient and reduce the cost |
Good weather resistance | In the ultraviolet wavelength range has a strong light reflection ability, has the good sun resistance and weatherability |
Good Processing performance | Can improve the rigidity of plastic products, hardness and wear resistance.With high heat conductivity and rheological property, which can effectively help shorten the cycle of plastic injection molding. |
Improve the mechanical properties | Effectively increase the crystallinity of thermoplastic polymer so as to improve the strength and geometric stability of products, reduce the molding shrinkage deformation. |
Good cost performance | In the wide spectrum, with extremely high reflection coefficient, so it is white powder, and is a neutral color.So you can keep the paint the original brilliance and color.Most of the pigments are easy to aggregate formation, this will weaken pigment tinting strength.Use bright jiang card - barium sulfate can significantly reduce the all kinds of pigment dispersion problems in plastic preparation, increase the space steric effect pigment stability, can effectively reduce the usage of various pigments, alternative paint effect, such as titanium dioxide, color pigments and carbon black, can effectively save the plastic pigments dosage, usually can be reduced by 10%. |
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? China is the world& acute;s largest producer of barium sulfate, about 40% of the total world output, there are more than 100 brand belongs to plastic special.Requirements for plastic with barium sulfate, fine particle, good dispersion performance;Good heat resistance and light resistance, heat and the plastic forming process was finished product does not change color in sunlight exposure and use process.Most of the plastic with barium sulfate particle size is fine.

?? ??Adding barium sulfate in the plastic can improve the rigidity of plastic products, hardness and wear resistance, aging resistance, can help to shorten the cycle of plastic injection molding, also can increase the crystallinity of thermoplastic polymer.Due to the characteristics of plastic products, should be considered for its chosen barium sulfate and other coatings, printing ink, paint, etc. When choosing different, should be taken into account in accordance with the technical requirements of plastic products, mainly to choose ultra-fine barium sulfate or precipitated barium sulfate.

??? Masterbatch: helps to improve the dispersion of pigment, the phenomenon of lower condensation or flocculation, high filling will not affect color pigment.?

Engineering/modified plastics, can improve the rigidity of plastic products, hardness and wear resistance, aging resistance, can help to shorten the cycle of plastic injection molding, also can increase the crystallinity of thermoplastic polymer.

? General plastic: excellent hiding power, and can gain pigment with bright colors, and make the product surface has the perfect color and high glossiness, and has good mechanical properties and wear resistance.?

? Elastomer: high chemical purity, do not contain harmful substances, does not affect the storage stability and aging resistance.

? Rubber: can enhance product ageing resistance and weatherability, product is not easy to aging become fragile, and can significantly improve the surface roughness and hardness of the products.

? Thermosetting body: inert, color stability, combined with other pigments can obtain better gloss, mechanical properties and low wear resistance.

? Thermoplastics: thermal conductivity and easy liquidity can make its less time on injection molding, barium sulfate can be used as a nucleating agent, to improve its strength.

3. The drilling mud weighting agent to the requirement of barium sulfate:

?some oil and gas well drilling, the general use of drilling mud, clay proportion of 2.5 or so, the proportion of water is 1, so the mud weight is low, sometimes the mud weight can& acute;t with underground oil and gas pressure balance, has caused the blowout accident.Under the condition of the underground pressure is higher, you need to increase the mud weight, supplying the mud with barium sulfate is an effective measure to increase the mud weight.Do drilling mud with barium sulfate general fineness to achieve more than 325 mesh, such as barium sulfate fineness is not prone to precipitation.Drilling mud with barite for weighting is greater than 4.2, BaSO4 content not less than 95%, less than 1% soluble salts.

4. Liangjiang Brand ultrafine barium sulfate in other areas of application:

? Adhesive: good rheological property, high filling and chemical resistance, make barium sulfate is suitable for adhesive, unsaturated polyester and polyurethane system, etc.

? Printing ink: low wear resistance, high gloss and color stability, low coherence, and combined with its easy liquidity makes barite powder is suitable for the high quality of printing inks, barium sulfate recommended for people with high optical activity of ink.Wood and paint: ultrafine barium sulfate with low coherence, optical characteristics of low dispersion and fine particles, especially suitable for paint paint, varnish, paint, etc. According to the barium sulfate has the chemical resistance and weatherability.

? High fill paint and thick slurry coating: coating series can be applied to all, for example, primer, high build coating all types, such as its low specific surface area and particle size of division and easy mobility, make ultra-fine barium sulfate in the machining process has low wear resistance, ultra-fine barium sulfate recommended for primer surface automatically, even when the high fill also keep a good uniformity and smoothness.

? Paint: ultrafine barium sulfate is better than that of most other filling agent, especially in chemical resistance coating. Its inertia, insoluble in water, acid, alkali and organic agents. Excellent gloss and granular precision makes the paint in long-term exposure can be protected. Ultrafine barium sulfate recommended for paint, it can increase the surface hardness, color stability.

??Road construction: rubber and asphalt mixture containing about 10% ultrafine barium sulfate has been successfully used in the parking lot, is a kind of durable paving material.At present, the heavy road construction equipment tires have been partially filled with ultra-fine barium sulfate, to increase the weight, to consolidate fill region.Prevent ray: cement, mortar and concrete with X-ray absorption performance, made with ultrafine barium sulfate barium cement, mortar and concrete, to replace the metal lead plate shielding nuclear reactors and prevent X ray to build the scientific research, hospital buildings.

? Glass: deoxidation agent, clarifying agent, flux, increase the stability of optical glass, gloss, and strength.

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5. Barium sulfate international fineness of CRT

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JIS | ASTM | TYLER |
Mictone(um) | m/m | mesh | m/m | mesh | m/m |
1 | 0.001 | 12500 | 0.001 | 12500 | 0.001 |
2 | 0.002 | 6250 | 0.002 | 6250 | 0.002 |
5 | 0.005 | 2500 | 0.005 | 2500 | 0.005 |
10 | 0.010 | 1250 | 0.010 | 1250 | 0.010 |
15 | 0.015 | 800 | 0.015 | 800 | 0.015 |
20 | 0.020 | 625 | 0.020 | 625 | 0.020 |
25 | 0.025 | 500 | 0.025 | 500 | 0.025 |
33 | 0.033 | 425 | 0.033 | 425 | 0.033 |
37 | 0.037 | 400 | 0.037 | 400 | 0.037 |
44 | 0.044 | 325 | 0.044 | 325 | 0.043 |
53 | 0.053 | 270 | 0.053 | 270 | 0.053 |
62 | 0.062 | 230 | 0.062 | 230 | 0.061 |
74 | 0.074 | 200 | 0.074 | 200 | 0.074 |
88 | 0.088 | 170 | 0.088 | 170 | 0.088 |
105 | 0.105 | 140 | 0.105 | 140 | 0.104 |
125 | 0.125 | 120 | 0.125 | 120 | 0.124 |
149 | 0.149 | 100 | 0.149 | 100 | 0.147 |
177 | 0.177 | 80 | 0.177 | 80 | 0.175 |
210 | 0.210 | 70 | 0.210 | 70 | 0.208 |
250 | 0.250 | 60 | 0.250 | 60 | 0.246 |
297 | 0.297 | 50 | 0.297 | 50 | 0.295 |
350 | 0.350 | 45 | 0.350 | 45 | 0.351 |
420 | 0.420 | 40 | 0.420 | 40 | 0.417 |
500 | 0.500 | 35 | 0.500 | 35 | 0.495 |
590 | 0.590 | 30 | 0.590 | 30 | 0.589 |
710 | 0.710 | 25 | 0.710 | 25 | 0.701 |
840 | 0.840 | 20 | 0.840 | 20 | 0.833 |
1000 | 1.000 | 18 | 1.000 | 18 | 0.991 |
1190 | 1.190 | 16 | 1.190 | 16 | 1.168 |
1410 | 1.410 | 14 | 1.410 | 14 | 1.397 |
1680 | 1.680 | 12 | 1.680 | 12 | 1.651 |
2000 | 2.000 | 10 | 2.000 | 10 | 1.981 |
2380 | 2.380 | 8 | 2.380 | 8 | 2.362 |
2830 | 2.830 | 7 | 2.830 | 7 | 2.794 |
3360 | 3.360 | 6 | 3.360 | 6 | 3.327 |
4000 | 4.000 | 5 | 4.000 | 5 | 3.962 |
4760 | 4.760 | 4 | 4.760 | 4 | 4.699 |
5660 | 5.660 | 3 1/2 | 5.660 | 3 1/2 | 5.615 |
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