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目前显示的是 二月, 2019的博文

Effect of nano-SiO2 on properties of cement-based materials

The addition of  nano SiO2 powder  as an admixture to cement-based materials can improve many of the properties of cement-based materials. A large number of research results show that adding appropriate amount of  SiO2 nanopowder  to cement-based materials, due to the volcanic ash effect of  nano SiO2 particle , nucleation effect and micro-filling effect, can significantly improve the early strength of cement-based materials, improve the bleeding of cement-based materials and The pore distribution characteristics improve the durability of the structure. 1. Effect of nano-SiO2 on properties of cement-based materials 1.1The nano-SiO2 has a small particle size, so the specific surface area is large and the surface activity is high, so that a part of the free water of the cement-based material slurry is consumed in the early stage of the cement-based material curing age. In addition, since nano-SiO2 is too small in particle size, it is almost difficult to unifor...

High Purity 99.5 Tantalum Silicide Nanopowder TaSi2 Nanopowder 100nm

Application of  Tantalum Silicide nanopowder : TaSi2 particle is mainly used in heating elements, integrated circuits, high temperature oxidation resistant coatings, high temperature structural materials, and aerospace and aerospace industries. Specification of  Tantalum Silicide nanopowder : Part No. Particle Purity (%) SSA (m2/g) Bulk density (g/cm3) Density (g/cm3) Crystal Color HP7314B-100N 100nm 99 35 5.2 9.14 cubic gray HP7314B-1U <1.0um 99 24 5.8 9.14 cubic gray HP7314B-3U 1-3um 99.5 18 7.4 9.14 cubic gray Note: We can supply different size products of Tantalum Silicide nanopowder according to client's requirements. TaSi2 = 237.12, density 9.14 g/cm3, melting point 2200 ° C, dark gray cubic crystalline powder. Our company's new process synthetically produced zirconium silicide has the characteristics of high purity, uniform particle size distribution, large specific surface area, high surface activ...

Ultrafine copper powder is used in different application

1. Application of  ultrafine copper powder  on MLCC internal electrodes Copper has the advantages of small resistivity, small electromigration speed, and low price. It is an ideal substitute for silver-palladium internal electrodes, but its chemical properties are more active. In the air, powdery copper with large specific surface area is easily Oxidation, the surface will form a film of Cu2O and CuO, causing its conductivity to drop rapidly and even become non-conductive. The inner electrode of the chip type multilayer ceramic capacitor prepared by the ultra-fine copper powder prepared by the phase reduction method overcomes the above disadvantages, and has the advantages of good dispersibility, high sphericity, uniform particle size, etc., and is sure to become an excellent choice for the MLCC. 2. Application of ultrafine copper powder in conductive coatings Conductive coatings are a kind of functional coatings that have been rapidly developed along with advances in scie...

The application of nano materials in plastic modification

The organic/inorganic nanocomposite formed by dispersing the inorganic filler in a nanometer size in a general plastic matrix is called nanoplastic. In nanocomposites, nano-plastics have excellent properties such as high strength, heat resistance, high barrier properties, flame retardancy and excellent processability due to the nano-size effect of the dispersed phase, large specific surface area and strong interfacial bonding. A new kind of high-tech new materials. Application of nanomaterials in plastic modification: (1) Anti-aging properties of reinforced plastics The anti-aging properties of polymers directly affect its service life and environment, especially for agricultural plastics and plastic building materials, which is an indicator that needs high attention. The ultraviolet light in the sunlight is 200 to 400 nm, and the ultraviolet light in the 280 to 400 nm band can break the molecular chain of the polymer and never age the material. Nano-oxides, such as  alumina na...

Thermal Analysis for Study Thermal Properties of ABS, PVC and NBR Alloys

Abstract: DSC, TGA and TMA techniques are used for systematical study of glass transition, thermal degradation, thermal oxygen degradation, HCl removal process and deformation characteristics of ABS / PVC / NBR alloys. The results show that various changes in ABS / PVC / NBR alloy are accompanied by changes in energy, mass and dimension. Glass transition temperature is an important parameter to characterize the compatibility of plastic alloys. Thermal stability of the alloy depends on HCl removal process of PVC in the alloy system. TMA curve of ABS/PVC/NBR is divided into flat section, expansion section and softening section, in expansion section products will deform and lose practical va lue. Flat section belongs to the application scope, and softening section provides technical data and theoretical basis for determining the optimal process. ABS/PVC/NBR is a new type of polymer material, which is widely used for bags, automobile panels and other outer packaging pro...

Monosodium Glutamate (MSG)

Single cell protein 60-75% protein content Feed additive MSG Monosodium glutamate  Industrial Cell-mass is the proteinic by-product derived from Monosodium glutamate fermentation process. As SCP(single cell protein)product, MSG Industrial Cell-mass has high protein content up to 65% and good amino acid profile, particularly essential amino acids (e.g. Lysine, Threonine). It also contains vitamins, minerals and nutrients in fermented bacterial biomass and substrate residues. Meanwhile, it has good palatability owing to high level of glutamic acid and mild fermented flavour. Specification: MSG Industrial Cell-mass has high protein content up to 65%and good amino acid profile. MSG Industrial Cell-mass is the proteinic by-product derived from MSG fermentation process. As SCP(single cell protein) product, MSG Industrial Cell-mass has high protein content up to 65% and good amino acid profile, particularly essential amino acids (e.g. Lysine, Threonine). It also contains vitamins, mineral...

Factory Price Silicon Aluminium Powder AlSi20 Powder

Note: We can supply different size products of AlSi20 powder according to client's requirements. Silicon content is relatively low (such as 7%), aluminum-silicon alloy melt filling is better, commonly used to do, when the silicon content is low (such as 0.7), Al-Si alloy ductility is better, commonly used to make deformation alloy; Casting alloy. In the Al-Si eutectic point (silicon 12.6%) of the Al-Si alloy, the silicon content of particles up to 14.5% ~ 25%, then add a certain amount of Ni, CU, Mg and other elements can improve its synthesis Mechanical properties. Application of AlSi20 powder : 1.Electronic Packaging Materials 2.As deoxidizer and alloying agents in the steel industry. 3.Piston Material 4.As a nucleating agent and spheroidizing agent in the cast iron industry. 5.Conductive material 6.As a reductant in ferroalloy production. 7.Aluminum brazing 8. 3D printing Storage conditions: Silicon Aluminium Powder AlSi20 Powder should be sealed and stored in a dry and cool e...

Sodium Benzoate CAS No.532-32-1

Food additives  sweeteners Sodium Benzoate  wholesale Sodium benzoate CAS 532-32-1  (E211), also called benzoate of soda, has the  chemical formula NaC6H5CO2. It is the sodium salt of benzoic acid and exists in this form when dissolved in water. It can be produced by reacting sodium hydroxide with benzoic acid. Sodium benzoate  exists in white small granular or white powder, odorless or with slight odor of benzoic, soluble in water and alcohol. Sodium benzoate  is a  preservative . It is bacteriostatic and fungistatic under acidic conditions. It is used most prevalently in acidic foods such as salad dressings (vinegar), carbonated drinks (carbonic acid), jams and fruit juices (citric acid), pickles (vinegar), and condiments. It is also found in alcohol-based mouthwash and silver polish. It can also be found in cough syrups like Robitussin. Sodium benzoate is declared on a product label as 'sodium benzoate' or E211. It is also used in firework...

PMK Powder For Research Chemical

We are able to ship oil directly to you or offer you intermediates to help you cook for the oil.  CAS 13605-48-6 pmk power give yield of oil 75% . which means you will have 750gram bmk oil from 1kg powder. the process is quite easy and simple, it can be done in a normal kitchen without any special equipment. Name PMK Methyl 3-(3,4-methylenedioxyphenyl)glycidate Synonyms 3-(1,3-Benzodioxol-5-yl)-2-oxiranecarboxylic a.cid methyl ester CAS NO. 13605-48-6 Molecular Formula C11H10O5 Molecular Weight 222.19 Appearance White to Pale Yellow Powder Purity 99% Min Density 1.412±0.06 g/cm3 M.P. 65 ºC Solubility Very slightly soluble Place of Origin : China MOQ : 10g Price : 1usd/g Payment Terms : T/T, Western Union, MoneyGram, Bitcoin Supply Ability : 500kg/day Delivery Time : 1day Packaging Details : Aluminum foil bag Product name : PMK Puirty : 98% Appearance : powder Storage : Keep in cool and dry place