How many chemical additives are in concrete today

Concrete is a modern material that uses a variety of chemical additives, each with their own unique characteristics. These additives play a vital role in improving the performance of concrete and maintaining its quality. Here are a few chemical additives that have many benefits.

Cement Water Reducing Agent

It can be used to improve the strength of the concrete, reduce the amount cement and maintain the fluidity. Cement-water-reducing agents can be classified as conventional or high-performance. A conventional type of cement water-reducing agent is used in ordinary concrete. High-performance types are designed for special concrete projects such as high strength concrete or self-compacting.

Retarder

Retarders can reduce the time it takes for concrete to set and increase the flexibility of the construction process. Retarders can control the concrete setting speed to ensure smooth progress in large-scale projects due to the long construction times.

Early Strengthening Agent

Early-strengthening compounds accelerate the concrete hardening process, allowing for a rapid increase in strength. It is especially useful for projects which need to be completed quickly or put to use as soon a possible. Early-strength agent can help improve the progress of the project and reduce the construction time.

Waterproofing agent

Waterproofing agents are used to improve the strength of concrete and prevent water penetration. Waterproofing agent can be divided in two categories: surface waterproofing agent and deep waterproofing agent. Choose the waterproofing agent that best suits your needs.

Application Fields of Spherical Tungsten Powder

Spherical Tungsten Particles: Applications

The spherical powder of tungsten is widely used as a powder metalurgical material in many industries. Following are some key application areas for spherical titanium powder:

Hard alloy manufacturing

Hard alloys consist of carbides and metals that have high hardness and strength. They also exhibit good wear resistance. It is widely used for automobiles, mining and petroleum. Purity and particle size are important factors that affect the performance of hard alloys during the manufacturing process.

Spherical tungsten powder The raw material for hard alloys is known to have high purity and fine particles. Spherical powder tungsten is used to produce hard alloys that are high in density, strength and wear resistance. It can improve production efficiency, as well as the life of equipment, in industries such as mining and petroleum.

Preparation high-purity metal tungsten products

Tungsten is an industrial raw material with good chemical, mechanical, and physical properties. Spherical powder tungsten is characterized by its high purity, fine particle size, and fluidity. It can be directly used to prepare high purity metal tungsten products.

high-purity tungsten wires, rods, etc.

These tungsten metals have many applications in electronic, communication, aviation, etc. Tungsten wires, for example, can be used in high-temperature furnaces for the preparation of high-purity metals.

Manufacturing of high-temperature kilns

It is used in high-temperature melting and heating of metal. The furnace has high efficiency and precision. It is widely used by metallurgy as well as ceramics and chemical engineering. As a raw material for high-temperature furnaces with excellent thermal conductivity and strength, sphere tungsten powder is a good choice. It is used to produce high-temperature material with a low thermal coefficient and high temperature corrosion resistance.

High-temperature furnace materials prepared with spherical-shaped tungsten powder have excellent thermal stability and strength. It is suitable for high-temperature melting metals, glass, ceramics, etc.

Electronic Packaging Materials

The demand for electronic packaging material is increasing with the rapid development in the electronics industry. Spherical powdered tungsten is an important raw materials for electronic packaging. W powder has excellent thermal conductivity as well as mechanical strength. It can be used for high-performance components in electronic packaging, which improves the reliability and stability.

Spherical powder tungsten is a good material to use in electronic packaging for components like chip carriers, lead frames and other key components. The electronic packaging material made from spherical powder is highly durable and has high mechanical strength. It can be used to ensure that electronic equipment operates efficiently and lasts a long time.

Aerospace field

Materials with high strength, temperature and corrosion resistance are required in aerospace. Spherical powder tungsten is a high-purity material with good mechanical properties that can be used for high-performance aerospace materials such as engine components and spacecraft structural parts.

As an example, spherical powder tungsten is used as a reinforcing material for aviation engine parts, which improves the performance and reliability of the engine. Spherical powder can be used to make spacecraft structural parts, such as solar panels, satellite brackets and other components. This can increase the safety and reliability of spacecraft.

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Scientific News Boron Nitride Graphene Mixture May Be Suitable For Next-Generation Green Cars

Scientific community has long been fascinated by boron nitride due to its unique properties: sturdy, ultra-thin transparent, insulating and lightweight. The boron is a material that can be used by a wide range of researchers.
According to researchers at Rice University a graphene film separated by boron nanotube columns could be used as a material for storing fuel hydrogen in automobiles.

The Department of Energy is setting the standard for storage materials to make hydrogen fuel a practical option for light vehicles. A new computational study by materials scientist Rouzbeh Sharsavari of Rice Lab has determined that pillared Boron Nitride and Graphene may be suitable candidates.

Shahsavari’s laboratory determined the elastic and columnar graphene structures by computer simulation, and then processed the boron nanotubes to create a mixture that simulates an unique three-dimensional structural design. (A sample boron nanotubes bonded seamlessly to graphene is prepared.

As the pillars of the building provide space between floors for people, so do the pillars within the boron-nitride graphene. The goal is to keep them inside and then exit when needed.

The researchers discovered that the latest simulations of molecular dynamics showed that pillared-graphene and pillared-boron nitride-graphene have a high surface area (approximately 2,547 sq. m. per square meter) as well as good recyclability in ambient conditions. Their model shows adding oxygen or lithium will improve the material's ability to combine with hydrogen.

The researchers focused their simulations around four different variants, including a graphene pillared with boron or lithium doped boron or nitride.

The best graphene at room temperature was oxygen-doped graphene boron oxide, with a weight of 11.6% (its weight) and a volume of 60 g/L. This is a good alternative to other technologies, such as porous metal oxide skeletons or carbon nanotubes.

The material's hydrogen weight was 14.77% in cold weather at -321 Fahrenheit.

The current US Department of Energy economic storage media goal is to store more hydrogen than 5.5% in weight and 40 grams of hydrogen per liter under moderate conditions. The ultimate target is 7.5% weight and 70 gram per liter.

Shahsavari explained that the hydrogen atoms adsorb on the undoped pillared Boron Nitride Graphene due to a weak van der Waals force. When the material has been doped with oxygen the atoms are strongly bound to the mixture. This produces a surface which is better for hydrogen.

"Due to the nature of charge and interaction, adding oxygen to the substratum gives us a strong bond," said he. "Oxygen, and hydrogen have been known to share a strong chemical affinity."

Shahsavari explained that the combination between boron nitride and graphene, as well as the high electron mobility in graphene, makes this material highly adaptable.

Shahsavari explains that "we are looking for the best point" which consists of the optimal conditions, such as the balance between weight and surface area, temperature, and operating pressure. "This is only possible through computational modeling as we can test a lot of changes very quickly. In just a couple of days, the experimenter is able to finish the work that would normally take months.

He said these structures are strong enough to easily surpass the requirements of Department of Energy. The hydrogen fuel tank, for example, can withstand up to 1,500 charging and discharge cycles.

Tech Co., Ltd., a professional boron manufacturer, has over 12 years of experience in the chemical products research and design. Contact us if you need high-quality boron Nitride. Send an inquiry .

Knowing the interesting chemical elements boron B comes from afar

Boron has been a major name in the world of chemistry. There have been two Nobel Prizes in Chemistry for the work done on boron.

There are a few heat-resistant products on the market that have added boric acids to common glass. This means the glass will not expand or contract easily after joining.

Diamond is the hardest substance known to man. However, recent theories suggest boron-nitride in alternate forms, wurtzite, may actually be more hard than diamond. However, the crystals for this compound have not been created yet.

Boron compounds have a number of interesting properties. They play a crucial role in polymer crosslinking, which gives plasticine a remarkable ability. It is soft and malleable when held in the hand but becomes hard and elastic if thrown against a surface.

Boric acid is a compound that contains boron and it's often used as a medicine or to kill insects. Boric Acid can be used for eye disinfection, especially in high school and middle school chemistry laboratories.
Tech Co., Ltd. is a professional boron manufacturer with 12 years of experience in chemical product development and research. You can contact us to send an inquiry if you are interested in high-quality boron.

What metal can withstand higher temperatures than tungsten

What metal is more resistant to heat than tungsten?

Among all metal elements, tungsten's melting point is the highest, at 3,422 (boiling points 5,930). No metal element is higher in melting point than the tungsten.

Tungsten is element number 74 in the VIB Group of Period 6. Each atom has the ability to form six metal bondings.

There are elements that are more resistant to heat than tungsten. Solid carbon, for example, can be heated up to 3,627 degrees c. However, carbon does not have a fixed melting temperature (one atmosphere), because it sublimates between 3627 and 4330 degrees c.

Ta4HfC5, a material with a 4215-degree melting point, is currently the most heat resistant material that has been manufactured by humans. It's made from tantalum carbide and hafnium carbide (melting point nearly 4000), both of which have higher melting points than tungsten.

The melting point of a material is dependent on its pressure. The higher the pressure the higher it will be. But when temperature and pressure go beyond critical, then the material loses melting point.
( Tech Co., Ltd. ) is an experienced tantalum-carbide manufacturer with 12 years of experience in research and product development. Contact us to send a request for tantalum carbide of the highest quality.

Nano silver substitution trend is irreversible

Nanowires to replace infrared first
Due to the rapid growth of the display industry, as well the scarcity of indium, and the high processing costs of ITO films, industry leaders have been searching for alternatives, such as nanowires. Silver nanowires, among other alternatives, are the most advantageous due to their technology and maturity. Additionally, they are flexible and can be used to replace other materials that conduct electricity with flexible displays of east winds.

Nanosilver has the most important role in Nanosilver. Nanosilver has excellent antibacterial properties and is safe.

Silver nanowires are being used to replace infrared touchscreen technology in large scale applications. Du said, "The substitute is already obvious." "The large-size products made of silver nanowires are gaining customers' recognition.

Currently, infrared control is used mainly on the market for electronic whiteboards. Infrared transmitter tube and receiving tube is arranged on the raised border so that infrared optical networks are formed.

The next major flashpoint will be 2020

The global smartphone market, with its huge population, has slowed down. However, the small and mid-sized markets will be essential for silver nanowires' mainstream adoption.

"The smartphone industry needs revolutionary innovation, whether it's facial recognition, the full screen or the hot AI feature," du said. ""Whether it is facial recognition, a full-screen, or a hot AI feature, smartphone industry needs radical innovation," du said.For the moment, foldable phones make sense. As the screen size increases, it becomes more difficult to carry around. On the other hand there are new business opportunities and product experiences that can be created if it is foldable."

The last step to breaking through nanowire

The technology of silver microwires is not widely used. The production, manufacture, storage, and patent of the silver nanowires is considered to be an important factor that limits their development.

It is not possible to replace ITO films with silver nanowires. The future holds the biggest potential for completely new applications.

( Tech Co., Ltd. ) is an experienced silver nanoparticles producer with over 12 year experience in research and product development. Contact us to send a request for more information if you are interested in high-quality nanoparticles.

Molybdenum disulfide nanoelectromechanical system ultra-thin ultra-small ultra-low power consumption

As a typical material with two dimensions, graphene is widely used and highly desired in the scientific and industrial community. What exactly is a 2-dimensional material? Simple, two-dimensional material is a non-nanoscale (1 to 100 nm) material in which electrons are able to move freely in two directions (planar movement). Examples of such materials include: graphene; boron nitride; transition metal compounds (disulfide); Molybdenum; tungsten diulfide; tungsten diilicide; black phosphorus and others.
2D materials can be used in a variety of fields. For example, spintronics and printed electronics are two examples. , quantum dots, sensors, semiconductor manufacturing, NFC, medical, etc.


Molybdenum diulfide, also known as MoS2, is a two-dimensional material that deserves our attention. Molybdenum diulfide, which is composed of two atoms of molybdenum with one atom of sulfur, has only three atoms of thickness. The graphene thickness is nearly the same as molybdenum, but graphene has no band gap. In this context, the author has previously revealed that the US Department of Energy Berkeley Lab's research team accurately measured band gap of the two-dimensional semiconductor material molybdenum-disulfide.


In addition, the molybdenum diulfide has an electron mobility that is 100 cm2 /vs. (ie. 100 electrons per centimeter square per volt) although it is much lower than the crystal. The silicon has an electron migration rate of about 1400 cm2/vs. However, it is better than amorphous silica and other ultra thin semiconductors.

Molybdenum diulfide, with its excellent semiconductor characteristics and small size and ultra-thinness, is ideal for transistors, flexible electronic devices, LEDs, Lasers, and Solar Cells.

( Tech Co., Ltd. ) is an experienced Molybdenum diulfide producer with over 12 year experience in research and product development. You can contact us if you're looking for high-quality Molybdenum diulfide. Send an inquiry.

Tungsten Oxide Insulation Material Can Make The Sun Room Cool in Winter and Cool in Summer

What is tungsten Oxide?Tungsten dioxide has the molecular formula WO3 with a weight of 2318.5.
It is a form of tungsticanhydride. Tungsten dioxide is not produced in industrial production. The tungsten-trioxide salts are classified according to their content in tungsten trioxide.
Tungsten Trioxide is a pale-yellow triclinic powder. Once the temperature reaches 740 deg C it changes into a tetragonal orange crystal. In air, it is stable, with a melting point of 1473 deg C and a boiling point higher than 1750.
Tungsten Trioxide is one of the most stable tungsten oxydes. It is not soluble in water or inorganic acid other than hydrofluoric. It forms soluble Tungstate in hot sodium hydroxide solution. If the temperature is greater than 650 deg C it can reduce by H2, but at 1000-1100 C it can reduce by C to get tungsten.

The application of tungsten dioxide transparent insulation material
Smart homes makes home life safer, more convenient and comfortable! The smart home also saves energy and is environmentally friendly. It makes life more artistic. So, it's not surprising to see the smart sunroom. One of these is the so-called "intelligence", which breaks the sun room into two parts: summer as "fire stove", and winter as "refrigerator". Transparent semiconductor materials like tungsten oxide transparent materials are a good way to make the sunroom cool in summer and warm in winter. My opinion is that it's not necessary to install floor heating and air conditioning equipment. The best solution to heat insulation is to start at the source.

This concept of a smart home has already permeated our minds and is being applied everywhere! The author was not able live an intelligent lifestyle. This led to the classic home scene: the author left the house every time. The result was that he forgot something, but remembered it halfway. Is your air conditioner turned off? If you don’t confirm this, you won't make it through the day. But go back, and you'll be late to work! What about changing to the smart home scenario? ----After you lock the front door, turn the scene to unmanned, shut off all power supplies to the terminal blocks, and check the status via the mobile application at any time. It is easy to use, and it makes people feel more at ease.
The switch to the smart room is a similar experience. Now, Low-e is used in some sunrooms. Researchers tested the blocking of ultraviolet rays and near-infrared radiation by glass coated with nano tungsten oxide, Low-e, glass with heat insulation film, hollow-tempered glass and single sided glass. They found that: Infrared rays are blocked by the nano-coated glass 91% of the time, and ultraviolet rays 91% of the time. 2. Low-e glass has an infrared blocking percentage of 62.8% and a UV blocking percentage of 56%. 3. The infrared blocking percentage of glass with heat-insulating films is 59%, while the ultraviolet blocking percentage is 99.7%. 4. Hollow tempered glasses have an infrared-blocking rate of 34.2%, and an ultraviolet-blocking rate of 23.5%. 5. The infrared blocking percentage of single-sided glasses is 12.4%, and the ultraviolet blocking percentage is 13.5%.

As can be seen by the data, single-sided tempered glass with nano tungsten oxide coating has the best infrared blocking ability. Single-sided tempered glass with thermal film and nano tungsten oxide have the most effective ultraviolet blocking ability. Single-sided glass that is coated. Industry insiders say that because UV light is bactericidal and most people want to take pictures of the sun, a high UV-blocking rate is unhealthy. It is well-known that solar radiation supplies energy to all human activities on Earth. The amount of infrared, ultraviolet, and other rays that are present in sunlight is important. In general, the scientifically-recommended permeability rate is around 10%. In terms of health and energy savings, using nano-tungsten oxide-coated insulating glass makes the most sense.

It is clear that tungsten oxide is a transparent insulation material with two issues to solve urgently when building energy-saving windows: Transparency is defined as the ability to transmit light. It also meets lighting requirements. High barrier for the near infrared. This reduces energy consumption by blocking the radiant sun's energy.
As a transparent heat-insulating material made of tungsten dioxide, which is an environmentally friendly, water-based material, it only requires a thin layer of paint to achieve the desired effect. This allows you to enjoy 'warm winter and chilly summer' without the need for air conditioning. The tungsten oxide transparent heat insulating material is an excellent insulation material that has many features. . These materials include tungsten bronze as well as ITO, ATO FTO.
Tungsten-oxide insulation is not an "evil technology" but rather a result of technological and scientific development. According to the author, in today's advocacy for "energy conservation and emission reduction" as well as "taking a path towards sustainable development", these transparent insulation materials will receive more and greater attention.

Tech Co., Ltd., a professional tungsten-oxide manufacturer, has over 12 years of experience in chemical research and product development. Contact us if you need high quality tungsten. Sending an inquiry .

Metal Alloy 8.92g/Cm3 High Purity Polished Copper Plate

Copper products exhibit good electrical conductivity as well as thermal conductivity. They are also ductile, resistant to corrosion, and have high wear resistance. They are widely used by the electricity, electronics and energy industries.

Metal Alloy 18.5g/cm3 Polished Tungsten Heavy Alloy Plate

Tungsten alloy heavy plate has low thermal expansion. It is also known for its high density, high thermal conductivity, and radiation absorption. It is used widely in the aerospace and medical industries.

Metal Alloy 18g/cm3 High Density Tungsten Alloy Ball

W-Ni - Cu alloy is used in the production of Tungsten alloy balls. It is widely utilized in the fields of aviation, oil drilling, military and aerospace.

High Purity Molybdenum Boride MoB2 Powder CAS 12006-99-4, 99%

Molybdenum powder boride is a combination of molybdenum with boron. The chemical formula for molybdenum is MoB2, and the molecular weight is 202.69. Purity: >99%
Particle size: 5- 10um