There are several preparation methods for tungsten disulfide

Susano Paper and Pulp, the Brazilia-based company that is the world's largest pulp producer, has warned that global pulp stocks have been falling sharply and are facing shortages that could lead to higher prices for necessities such as paper towels and toilet paper in the future.  

Timber trade between Russia and Europe, an important supplier of timber to Europe, has been completely blocked due to the ongoing conflict between Russia and Ukraine, inhibiting the ​Tungsten Disulfide WS2 powder,​Tungsten Disulfide WS2 powder Overview,Application of tungsten disulfide WS2 powder,Tungsten disulfide WS2 powder price,Tungsten disulfide WS2 powder suppliers in the future are still very uncertain.

Tungsten Disulfide WS2 powder Overview

Fluidized tungsten is a small gray crystal or powder with metallic luster, belonging to the hexagonal crystal system, with semiconductor and diamagnetic properties. The natural mineral is tungsten ore. The layered structure is easily dissociated and has lubricating properties similar to graphite.

Preparation method of tungsten disulfide WS2 powder

1. Roasting decomposition method:

Tungstic acid reacts with ammonia water under stirring at 57-60°C for 3 hours, and the natural sedimentation is maintained for more than 16 hours. The generated ammonium tungstate reacts with hydrogen sulfide gas to generate ammonium tetrathiotungstate, which is calcined at high temperature and decomposed into tungsten disulfide.

H2WO4+2NH3·H2O→(NH4)2WO4+2H2O

(NH4)2WO4+4H2S→(NH4)2WS4+4H2O

2(NH4)2WS4+3O2→2WS2+4NH3+2S+2SO2+H2O

2. Tungsten reacts very slowly with liquid sulfur. WS2 can be formed by passing sulfur vapor on red-hot tungsten. Tungsten is mixed with stoichiometric amount of sulfur, and reacted at 800℃ for 24h in nitrogen atmosphere to form WS2. For example, at 6MPa and 1800℃, it can form orthorhombic WS2.

3. Using ammonium tetrathiotungstate as raw material, under the condition of isolating air, heating and decomposing ammonium tetrathiotungstate, heating from room temperature to 700~1200℃ with a temperature gradient of 100~200℃/hour, And after 24~48 hours of heat preservation at this temperature, it is then lowered to room temperature with a temperature gradient of 30~110°C/hour, and the material is discharged and pulverized.

The preparation method of ultra-fine scaly crystal tungsten disulfide used for lubricant has simple process equipment, no environmental pollution, safe and reliable operation, and can produce stable quality, high-purity ultra-fine tungsten disulfide with hexagonal crystal structure.

Application of tungsten disulfide WS2 powder

Tungsten disulfide WS2 powder can be used as a lubricant, and its performance is better than that of molybdenum disulfide, with a lower coefficient of friction and higher compressive strength. Stand alone equipment for high temperature, high pressure, high speed, high load and operation in chemically active media. Lubricants formulated with other materials for forging and stamping can prolong die life and improve product finish. Filler material configured with PTFE and Nylon for the manufacture of self-lubricating parts. In addition, tungsten disulfide can also be used as a catalyst in the petrochemical industry, which has the advantage of cracking tungsten disulfide. (WS2) or tungsten disulfide is a very smooth dry film friction coating. WS2 is extremely low, at 0.03, lower than PTFE, graphite or molybdenum disulfide (MoS2). It has unmatched performance in lubricity, non-stick, low friction, wear life and size ratings compared to many other WS2s. It has a wide range of applications in transistors, sensors, photocatalysis, electronic equipment and other fields. Tungsten disulfide powder has good solubility in water and ethanol.

WS2 is an excellent release material for plastic molds, extrusion dies and other release applications.

WS2 can save hydraulic oil and can also be used with petrochemical oil, grease, synthetic oil, silicone oil valve and hydraulic oil. It has affinity for the liquid layer and keeps the liquid layer. surface, thereby further improving the lubrication effect. Small parts can be coated without tolerance issues when the thickness is less than 1 micron.

WS2 is also a fairly inert and non-toxic material that has been used in medical devices and food processing applications.

WS2 replaces customer substrates with high-speed processing at ambient temperatures. It will not make the substrate continuous or warp.

WS2 can be used alone or in combination with our PVD hardcoats for increased durability, high performance, stable and reliable catalytic activity, and long service life.

Tungsten disulfide WS2 powder price

The price of tungsten disulfide powder will vary randomly with factors such as tungsten disulfide WS2 powder production cost, transportation cost, international situation, exchange rate and tungsten disulfide WS2 powder market supply and demand. Tanki New Materials Co., Ltd. aims to help industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full range of customized services. If you are looking for tungsten disulfide WS2 powder, please feel free to send an inquiry to get the latest price of tungsten disulfide WS2 powder.

Tungsten disulfide WS2 powder suppliers

As a global supplier of tungsten disulfide WS2 powder, Tanki New Materials Ltd. has extensive experience in the performance, application and cost-effective manufacturing of advanced and engineered materials. The company has successfully developed a series of powder materials (zinc sulfide, zinc sulfide, bismuth sulfide, etc.), high-purity targets, functional ceramics and structural devices, and provides OEM services.

Tungsten Disulfide WS2 powder details
Tungsten Disulfide WS2 powder particle size:FSSS=0.4 to 0.7 μm,FSSS=0.85 to 1.15μm. 80nm
Tungsten DisulfideWS2 powder purity:99.9%

The day after the shooting at a Texas elementary school, the National Rifle Association issued a statement saying it "extends its deepest sympathies to the families and victims involved in this terrible and evil crime," adding it would "reflect on these events and pray for the victims."  

It comes just days before the National Rifle Association's annual convention in Houston, Texas.  Houston is less than five hours away. Texas Governor Tony Abbott, Senator Ted Cruz, and others are scheduled to attend the event, which has also caused a lot of controversies.  

Texas Democratic gubernatorial candidate Mark O 'Rourke took to social media to call on Abbott to pull out of the convention, urging that it be held outside Texas. Many American netizens also took to social media to express their dissatisfaction. "I wish the NRA's annual meeting was held three days after 19 children and two adults were massacred," said one. "The school shooting was not a lone Wolf, but with the help of the NRA."

Between 2000 and 2020, US gun manufacturers produced more than 139 million guns for the civilian market, according to the Justice Department report. The NATIONAL Rifle Association (NRA) is one of the leading gun rights advocates with more than 5m members and deep pockets. The United States has not passed major gun control laws for more than two decades, blocked by gun interests.

The ​Tungsten Disulfide WS2 powder,​Tungsten Disulfide WS2 powder Overview,Application of tungsten disulfide WS2 powder,Tungsten disulfide WS2 powder price,Tungsten disulfide WS2 powder suppliers price is predicted to increase in the next few days.

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