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Micro-porous PVC-SiO2 Separator for Gelled Lead-acid Battery

PVC and SiO2 Separators PVC separators that are made by wet processing are mostly used in lead-acid sealed gel batteries. PVC-SiO2 Separators have higher porosity and more uniform pore sizes than sintered PVC Separators, as well as better puncture and compressive resistance, greater toughness and better compression strength than glass fibre separators. It has better chemical stability and oxidation resistance than polyethylene PE.

PVC and SiO2 Separator Properties:

1. The PVC/SiO2 separator is characterized by high porosity, a small maximum pore, and high liquid absorption. These characteristics allow the separator to retain the electrolyte easily, and have a rapid penetration rate.
2. The wet elastic is strong and can provide electrolyte to the plate while keeping the ion conductivity unblocked.

3. The "acid-strategization" phenomenon can be effectively prevented by a battery with strong liquid transfer abilities.

4. Based on the glass fiber. By adding organic fibers, the PVC/SiO2 separation is enhanced in terms of tensile strength and other performance indicators.

Application of the PVC-SiO2 separation in batteries:

1. The positive and the negative plates are placed close to each other, but should not be in direct contact. A separator between the plates is used. The PVC-SiO2 should be porous to allow electrolyte into the separator, and have good acid resistance and alkali tolerance. Wood, microporous Rubber, Microporous Plastic, and Resin-impregnated Paper are all good materials for separation.

2. The battery separator is responsible for carrying the electrolyte containing sulfuric acid in the cell. In the lean state, the separator shares the entire amount of sulfuric acid needed to meet the rated battery capacity with the electrode plate. For this to work, the separator needs to be large enough to absorb the sulfuric acids. Also, the battery must have enough space to accommodate the separator.

3. The PVC-SiO2 separation should provide sufficient oxygen channels to allow the oxygen that precipitates from the positive plate to pass through it to the negative, where it can be converted into oxygen. cycle. The separator must have a reasonably microporous surface, and the acid saturation of the separator must be determined at the time the battery is being designed.

4. The separator is used in lead-acid batteries with valve regulation to prevent the active material from falling off of the electrode plates and to keep the electrode plates from deforming. This prolongs the service life. It is necessary that the separator shrinks after being injected with sulfuric acid.

5. The internal resistance of a battery includes the resistance of a battery separator as well as the resistance that is formed when the separator contacts the plate. It is necessary that the separator has a low resistance and also be put under greater pressure when designing the battery. So, the PVC/SiO2 separation is in contact with the poleplate, and resistance is reduced at this point.

Tech Co., Ltd. is a professional PVC-SiO2 Separator With over 12 year experience in chemical product research and development. We accept payments by Credit Card, T/T (wire transfer), West Union, Paypal, and T/T. The goods will be shipped to overseas customers via FedEx or DHL.

You can contact us for a high-quality PVC/SiO2 separator. Contact us Send an inquiry.

2023-08-10

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The Characteristics and Application of Quartz Powder

What exactly is quartz powder? It's also called silicon fine powder. Quartz powder is a hard mineral that is known for its chemical stability and hardness. The quartz sand color is white or translucent. It has a hardness of 7, it's brittle and hard with shell-shaped fractures, a glossy oil finish, a chemistry that shows obvious heterogeneity. The product of the quartz mine is referred to by the term below 120 mesh. Quartz powder has more than 120 different products as their destination.
What are the uses of quartz powder?
Quartz is one the most important minerals on the surface of the Earth. Quartz Powder has many uses in industry.

Rich quartz sand used in glass making. Quartz sand plays a key role in the production of instrumentation, flat-sheet, specialty, and fiberglass glass. Quartz can also be used to produce lenses for optical instruments such as telescopes and microscopes. It is also used in prisms, sensors and electronic and scientific instruments.

Quartz Powder as an Abrasive. Because of its high hardness, which is seven on the Mohs scaling, quartz powder is more durable and effective than many other natural substances. Quartz powders and finely ground oxides have many uses, including sandblasting media, scouring cleanser, grinding media, grit, and sanding for sawing and sanding.

Quartz Powder used in the Slab Industry. Quartz Grains and powder are also used to produce artificial marble slabs. Since the very beginning, we are producing the highest-quality products for this industry.

Other Uses for Quartz Powder: You can use quartz powder as a filler when making rubber, putty, or paint. The sized and screened quartz grains can be used for roofing granules or as filter media. Quartz Powder is used to provide traction in the railroad and mining industry. These sands can be found on beaches, golf course sandboxes and volleyball courts.

Quantum Powder for Investigation of the Properties of Engineered Cementitious Composites Reinforced by Fibers
ECC mixes are more workable when they contain quartz powder and silica dust. These materials can absorb water. Water absorption is lower for cement and quartz than silica. Silica fume, however, has a specific area of between 15,000-30,000m2/kg. The use of water is constant in all ECC mixtures. In essence, these conditions may be the cause of the poor workability of ECC mixes. However, by adjusting superplasticizer content (SP) for each mix, a good consistency and working ability of ECC mixes can be achieved.

In the case of PVA fiber-based ECCs, adding quartz powder can improve the average compressive force of 6.85% or average strength ratio of 1,0685 compared to PVA fiber-based samples with no quartz powder. The addition of quartz to steel fibers based ECC can improve the average compressive strengths of 8.09% and the average strength ratios of 1.0809, compared with the steel fibres based ECC samples that do not contain quartz powder. The addition of the quartz powder to the steel fibers and PVA ECC samples led to higher compressive strengths with an average strength of 1.0747 when compared to samples of FR ECC without quartz.
(aka. Technology Co. Ltd., a global chemical material manufacturer and supplier with more than 12 years of experience, is a trusted source for super-high-quality chemicals. Currently, we have developed a number of materials. Quartz Powder is produced by our company with a high level of purity, a fine particle size, and low impurity content. Click the desired product to Send an inquiry.






2023-08-10

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Properties and Applications of Quartz Powder

What is quartz?

Quartz powder is also known by the name silica. Quartz sand has a high chemical stability and is hard. Its main component is SiO2. The quartz sand color is translucent or milky white. Hardness 7; brittle with no cleavage. Shape fracture, grease-luster, density of 2,65, bulk density (20 to 200 mesh is 1,5), chemical, mechanical, and thermal properties are clearly anisotropic, it's insoluble in acids, but slightly soluble in KOH solutions, melting point 1650. Quartz sand is the result of processing the quartz stone from the mine. It has a mesh size less than 120. The products with a mesh greater than 120 are known as quartz powder.

Use of quartz powder

Mineral fillers such as non-metallic minerals are used in modern polymer products like plastics, rubber and coatings. Addition of non-metallic minerals, such as the quartz powder, to the polymer material base can reduce costs, but also improve performance and dimensional stabilty, while giving the material special chemical and physical characteristics. Compression resistance, impact and corrosion resistance, fire retardancy, insulation etc.

KMPASS, etc. SlEC, a high-pressure epoxy molding material with good weather resistance and excellent electrical properties was developed using silicon micropowder. It is the best material to use for high voltage insulators and switches. KMPASS et al. Quartz powder was added to the patent of flame-retardant coatings in order to improve their thixotropic qualities. The coating features uniform coating, no cracked, quick curing, and low costs. Liu You and other researchers added quartz to epoxy resin in order to develop an epoxy coating that is non-toxic and has anti-corrosion properties. It overcomes existing coating's shortcomings when it comes to brushing or spraying. KMPASS, etc. In the patented electronic insulation sealing film prepared by using butyl as the base material, adding silicon powder to it, the film has high strength insulation, is waterproof, resistant to heat, cold, chemical corrosion, ageing resistance, good plasticity and insulation. Good characteristics. Ideal for the insulation and sealing of wire busbars of various electrical appliances and exposed joints.


(aka. Technology Co. Ltd., a trusted global chemical materials supplier & manufacture with more than 12 years experience in providing high quality nanomaterials and chemicals. Quartz powder manufactured by our company is of high purity and has a low impurity level. If you require lower, please contact our company.

2023-08-10

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Luaug Mineral and LuAG

Luaug mineral is a well-known and promising host for ionization radiation based scintillators in various applications, ranging from radiation monitoring to computer tomography [1]. The crystallographic properties of LuAG host are superior to those of YAG, which makes this material attractive for the creation of composite scintillators with a-particles and g-rays detection. The LPE grown LuAG:Pr SCFs/ and LuAG:Sc SC epitaxial structures were characterized in terms of their absorption, cathodoluminescence (CL) and scintillation light yield (LY) under a-particles and g-ray excitation.

The absorption spectra of the two LuAG:Pr SCF/LuAG:Sc SC samples grow on different YAG substrates reveal the existence of a wide low-intensive absorption band peaked in 260-262 nm, which corresponds to the allowed 4f-5d1,2 transitions of Pb2+ flux impurity in these SCFs. The other absorption bands observed in the spectra are most probably caused by re-absorption of UV emission of Sc3+ ions.

The LY maxima of both LuAG:Sc SC samples, measured with shaping times of 0.5-10 ms, were in the range 1735 and 1457 ph/MeV. The energy resolution of the two samples, measured with a-particles registration and g-ray excitation of 662 keV 137Cs, shows opposite dependency on the LY/shaping time dependence and lies in 13.2-30.4% and 14.4-32.3% ranges, respectively. The variations of LYa and LYg values as well as ta/tg and tg/ta ratios for both samples were found to be small. The sensitivity of LuAG:Pr SCF/LuAG:ScSC to g-rays was comparable with that of YAG:Tb SC under similar conditions.

2023-08-10

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The Property And Application of Bismuth Telluride

What property does Bismuth Telluride have?

Bismuth telluride The molecular formula for this powder is Bi2Te3. Bismuth telluride, an indirect band gap semiconductor, has a bandgap of 0.145eV at room temperature, electron mobility of 0.135m2/(V*s) and hole mobility of 4.x10-2m2/ (V*s), and a coefficient of thermoelectric quality of 1.6x10-3/K.
Bismuth Telluride is a dense material with a density 7.8587g/cm3 at a melting temperature of 585degC. It is bound with covalent and has an ionic bond. Bismuth telluride exhibits the characteristics of a topological insulate, allowing electrons flow freely over its surface.

The Bridgman method is one of the preparation methods for bismuth Telluride. Other methods include zone smelting and Czochralski. Bismuth telluride, a semiconductor, has a good electrical conductivity and mediocre thermal conductivity.

What is the use of Bismuth telluride?

Bismuth-telluride-based semiconductors have high performance thermoelectric conversion in the low- and mid-temperature range. These materials are widely used to control temperature and for local refrigeration in microelectronics. The applications of these devices are excellent in thermoelectric power generation and industrial waste heat recovery.

Through alloying, phonons scattering can improve to reduce thermal conductivity and carrier concentration to optimize the electrical performance. This will enhance the thermoelectric performance.

The dangers of bismuth-telluride are low but it can be fatal in large doses. The material is able to allow electrons on its surface to move at room temperatures without consuming energy, which can lead a significant increase in the speed.

Tech Co., Ltd. is a professional Bismuth Telluride We have over 12 year experience in research and development of chemical products. You can contact us for high quality Bismuth Telluride. Contact us Send an inquiry.

2023-08-10

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Aluminum Nitride Powder Properties And Applications

Aluminum nitride Aluminum nitride belongs to diamond-like nitride. It has a hexagonal crystal system and wurtzite structure. Aluminum nitride has a hexagonal system and a wurtzite structure. It is nontoxic, white or off-white, and is made of a covalent bond compound.

Aluminum Nitride Powder Properties

Aluminum nitride, or AlN, has many characteristics, including high strength, volume resistivity, insulation withstand voltage and thermal expansion coefficient. Recently, it is used not just as a reinforcing phase or sintering agent for structural ceramics. It is superior to alumina when it comes to ceramic substrates, packaging materials and electronic substrates.
Aluminum nitride, with its high thermal conductivity and low thermal expansion coefficient is an excellent thermal shock material. Aluminum nitride resists corrosion when molten and is a good crucible material to melt and cast pure iron, aluminum and aluminum alloys. Aluminum nitride also has excellent dielectric properties. It is also promising for electrical components.


Aluminum Nitride powder Applications

1. Aluminum nitride has a high activity and is of high purity. It is the main raw materials for high thermal conductivity Aluminum Nitride Ceramic Substrates.

2. Aluminum nitride is a ceramic substrate with high thermal conductivity. It has a low expansion coefficient and high strength. It is a suitable large-scale heat dissipation material and packaging substrate for integrated circuits.

The hardness of aluminum nitride is much higher than traditional alumina.

4. AIN ceramics have the ability to resist heat, melt erosion, thermal shock, and can be used to make GaAs crucibles. They can also be used for high-temperature turbine corrosion resistant parts, as well as magnetic fluid generation devices.

5. Aluminum nitride can be used as a substrate for super-large integrated electronic circuits, high-frequency components, etc.

6. Aluminum nitride resists heat, is resistant against corrosion caused by molten steel, and is stable with acid. It corrodes more easily in an alkaline solution. When exposed to humidity, the new surface will form a thin film of oxide. AIN ceramics can be used to replace toxic ceramics made of beryllium and they are commonly used in electronics.

Tech Co., Ltd. is a professional nitride powder We are a chemical product supplier with 12 years experience. We accept payment by Credit Card, T/T (West Union), Paypal and T/T. The goods will be shipped to overseas customers via FedEx or DHL.

You can contact us for high-quality Aluminum Nitride Powder. Contact us Send an inquiry.

2023-08-10

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Nitinol Metal Powder – Property and Preparation

What are the properties of nitinol metallic powder?

Nitinol Metal Powder NiTi powder belongs to Shape Memory alloys (SMA, for short). This alloy has the ability to completely eliminate deformation when heated at a low temperature, and then restore it after further heating. The alloy material with "memory' effect is the alloy in its original shape.

Many successful applications of nitinol metallic powder have been made in the aerospace industry. Memory alloys can be used for the antenna on an artificial satellite. Fold the parabolic satellite antenna into the body of the artificial satellite before it is launched. It is only necessary to heat the satellite after the rocket launches to place it in a specific orbit. The "memory function" of the folded antenna allows it to unfold and restore its parabolic shape.

Shape memory alloys have many applications in aerospace, electronics and machinery, biomedicine, bridge building, automobile industry and everyday life.

What is nitinol metallic powder preparation?

The following raw materials are used for the PREP process to produce spherical metal powders of nitinol: NiTi bars.
Preparing spherical Nitinol Metal Powder by PREP Method is as follows: The raw materials must be weighed and sized according to the experimental plan and poured into the cemented carbide tank ball milling for wet grind. The ball milling period is 24 hours. After the ball-milling, the pellets are vacuum-dried, with a drying time of 50 min and a temperature of 38deg C. They are then added to the granulation agent as a formant. The powdered material is placed in a hydraulic single-column press to be compressed, then it is placed into an integrated dewaxing/low-pressure sintering furnace.
The PREP method, which has excellent mechanical properties, was successfully developed using NiTi bars as raw material. This included batching and ball milling followed by drying, granulation forming, and then sintering. Among these, nitinol metallic powders are mainly made up of spherical powder particles. The martensite transformation temperatures decrease as the powder particle size decreases. The PREP method produces spherical powders of nitinol, which are improved in terms of hardness, density and bending strength.

Tech Co., Ltd. () has over 12 year experience in chemical product development and research. You can find high quality Metal powder nitinol Feel free to contact us Contact us Send an inquiry.

2023-08-10

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The Properties And Application of Nano silicon carbide

Introduce yourself
High-frequency, high-power, low energy-consumption, high temperature resistance, and radiation resistance are all characteristics of SiC nanomaterials. SiC nanowires have a photoluminescence at room temperature, making them an ideal material to manufacture blue light-emitting diodes (BLEDs) and laser diodes. Recent studies show that micron-sized SiC Whiskers are used to reinforce ceramics, metals and polymer-based composites. These composite materials exhibit excellent mechanical properties. It is possible for composite materials to have higher strengths, hardnesses and aspect ratios. As reinforcement phase for composite materials, larger SiC one-dimensional Nanomaterials will enhance their performance. SiC one-dimensional Nanomaterials possess excellent properties such as low threshold fields strength, high current densities, and good temperature stability. The materials will be used for electric field emission. This feature allows them to be turned into new electronic lights of third-generation and used for image display. The role is huge. As research progressed, researchers found that SiC one-dimensional nanostructures had broad applications in hydrogen storage and photocatalysis as well as sensing.
You can find out more about this by clicking here.

1. Large surface area, good surface activity, low density, and excellent mechanical, thermal electrical and chemical characteristics, including high hardness and wear resistance, and self-lubrication. 1. Nano silicon carbide has high purity and a small particle size distribution. It also has a high surface area.
2. This product exhibits high thermal conductivity with low thermal expansion coefficient and a good wear resistance.
3. The hardness of the material is between diamond and corundum, while the mechanical strength is greater than corundum.
4. Nano silicon carbide exhibits excellent thermal conductivity, and it is also a semi-conductor that can resist oxidation when heated to high temperatures.

Use

Manufacturing structural components such as sliding bearings (liquid fuel nozzles), high-power and low-frequency molds and semiconductor components for the metallurgy and chemical industries, and aerospace and energy industries.
2. Surface treatment of metals: cutting tools and molds. Heat resistant coatings.

3. Composite materials: Metal-based, ceramics-based and polymer-based composite material preparation.

Tech Co., Ltd. () is an experienced spherical-alumina manufacturer. We have over 12 years' experience in research and product development. If you need high quality or spherical aluminum please send us a message.

2023-08-09

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What is the price of cobalt phosphide?

The physical and chemical properties cobalt-phosphide Physical properties
It is needle-like and gray. Its relative densities (15degC), is 6.14. Melting point is 1386degC. It is a cheap, efficient, and stable transition metal phosphide.
Chemicals
Cobalt-phosphide (CO2P) is soluble both in nitric acids and aqua regia, but not in water. CO2P is a compound that forms when the phosphorus source enters the cobalt lattice. Cobalt-phosphide is used for magnetism and as anode materials in lithium batteries. It can also be used to catalyze hydrogenation, or photocatalyze degradation. Cobalt phosphide has a low bandgap with high thermal stability and chemical stability. It also has a strong electrical conductivity, and is capable of high-efficiency catalysis.
Purity and particle sizes parameters of cobalt-phosphide
Purity: 99.99%
Particle Size -60 mesh
Bulk density: 6.14 (g/cm3)

How is Cobalt Phosphide Powder produced?
Oil bath
The phosphorus in tri octyl is used to synthesize phosphate. This phosphate can then be obtained from an organic mixture through the thermal decomposition metal phosphate. It is very easy to aggregate the cobalt nanowires when tri octyl is used as the phosphorus in the reaction.
Hydrogen reduction
This is because the bond between oxygen, phosphorus, and metal is stronger. It is only at high temperatures that the bond can be broken. The high sintering temperatures cause the formation of large grain if phosphate is used to synthesize phosphate.
Pyrolysis
The toxic PH3 will be generated by the simple and relatively mild hypophosphite route, i.e., heating sodium hypophosphite at high temperature (300 to 400degC).
Element preparation method
Metal phosphides can be prepared under hydrothermal conditions (140 - 200degC). As phosphorus sources, white phosphorus (also known as yellow phosphorus or red phosphorus) is used.

Cobalt phosphide price
(aka. Technology Co. Ltd., a trusted global chemical supplier & manufacturer has more than 12 years of experience in providing high-quality Nanomaterials and chemicals. Currently, we have developed a successful series of powdered materials. Our OEM service is also available. Contact us if you're looking for Cobalt Phosphide Powder. You can also click on the products you need to send us a message.

2023-08-09

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Are there any prohibited items that should be paid special attention to when sending international express?

Prohibited goods include 1. These include explosives, flammables, toxics, acids-bases and radioactive items such as firecrackers, gasolines, alcohols, kerosenes, tung oils, lacquers, matches, pesticides and more. The "Practical Handbook of Dangerous Chemistries" published by Industry Press lists all the dangerous chemicals in the Chemical Products section.
2. Narcotics such as morphine, opium and cocaine (Kogan) are psychotropic substances. Items that are prohibited from being circulated or delivered by national laws such as guns, foreign or domestic currencies, etc. ;
3. Perishable items and all types of live animals including fresh fish, meat, etc. ).
4. Items that harm public health include bones (including incinerated ones), animal skins which have not yet been nitrated as well as animal bones made without medicine.
5. Reactionary publications, books or windows, or materials that are obscene, etc.
6. If you want to know more about the Chemical Product If the item you're sending isn't listed in "Practical Handbook of Dangerous Chemistries", you will need to provide an identification document issued by the local first level chemical product identification department. This certificate confirms the product in question is a non-hazardous chemist. Mail, it is the responsibility of the relevant appraisal department to provide the results. Tongrun supplies you with nanopowder material. Consultations are available at any time if you have questions about which powders you can mail. In addition, the company operates an import and export business for nanomaterials. Click here to access the following information: brad@ihpa.net

These are the specific classifications
(1) Valueds: gold bricks, coins, silver bars and platinum.
(2) Checks, cash, credit cards or phone cards; blank travel tickets; non-cash tickets
3) Antiques and handicrafts such as Ming Dynasty ceramics and exquisite glass.
(4) Medical specimens: diagnostic samples (blood samples, urine samples and human tissues).
(5) A variety of dangerous goods, including those that are inflammable or explosive, toxic, acid-base, and radioactive. Matches (both liquid and solid), detonators (gunpowder), firecrackers; gasoline, kerosene; alcohols (liquids and solids); sulfuric, hydrochloric, and nitric acids.
All forms of narcotic drugs, psychotropic substances and potent poisons. As arsenic or opium.
(7) Items that are prohibited by law. Including cultural relics and weapons.
Newspapers, books and pictures that are obscene, reactionary or offensive. Audio-visual products such as laserdiscs, computer disks, compact discs, DVDs, VCDs.
Obstructing public access. Animal skins, including burned ones, and animal bones, which haven’t been medicated.
Animals, plants, and their specimens.
(10) Unrecognisable white powder
(12) Liquids: seafood, alcoholic beverages (beer, liquor, etc. ), liquids, etc.
(13) Fragile products: glass products
Pornography, gambling and drugs are also prohibited. Guns, knives etc. All of the above is not permitted. Those products that are not illegal can be mailed through couriers to other countries.

Where can you buy high-quality Nano-powder Materials?
(aka. Technology Co. Ltd., a reputable global chemical supplier & manufacturer has over 12 years experience in providing high-quality Nanomaterials and chemicals. Currently, we have developed a successful series of powdered materials. Our OEM service is also available. If you're looking for Nano Silver powder , Contact us. Please contact us. Needed products Send us a message.

2023-08-09

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