White Carbon Black The Fumed Silica

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Tianjin
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TT OR LC
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Supply Capability:
10000MT m.t./month

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Product Description:

                                                        The Fumed Silica  

Product Description:

Fumed Silica
1.Used in tires, tire body, with beam layer and sidewall rubber and rubber products,Shoes Etc.

2.Product Status:White powder

Suggest for Use:

(1) M-150 type is a hydrophilic fumed silica and is a white powder of high purity.Applied in rubber and room temperature vulcanized rubber(TVR) rubber, adhesives and sealants, coatings and paint, etc.As the strengthening filler of the rubber,the rheological and thixotropic fluid control systems, adhesives, polymers, etc.; dustproof, anti-sagging, thickening; improve the free flow of powder and anti-caking characteristics of powder.  

(2) M-200 type is a hydrophilic fumed silica and is a white powder of high purity.Applied in coatings and paints, unsaturated polyester resin, composite resin and gel coats,elastomer, particularly rubber and RTV rubber, adhesives and sealants, printing inks, cable compounds, plant protection, food and cosmetics.As the strengthening filler of the rubber,the rheological and thixotropic fluid control systems, adhesives, polymers, etc.; dustproof, anti-sagging, thickening; improve the free flow of powder and anti-caking characteristics of powder,high transparency etc.

 

(3) M-300 type is a hydrophilic fumed silica and is a white powder of high purity.Applied in paints and coatings, silicon rubber and other elastomers, compounds and unsaturated polyester resins, adhesives and sealants, printing inks, etc.As the strengthening filler of the rubber,the rheological and thixotropic fluid control systems, adhesives, polymers, etc.; dustproof, anti-sagging, thickening; improve the free flow of powder and anti-caking characteristics of powder.It has excellent transparency in term of unsaturated polyester resin.

(4) M-380 type is a hydrophilic fumed silica and is a white powder of high purity. Applied in paints and coatings, silicon rubber and other elastomers, cable material and unsaturated polyester resins, adhesives and sealants, printing inks, etc.It can be used as reinforcing material for elastomers; rheology and thixotropy auxiliaries; dustproof, anti-sagging, thickening; It could enhance the free flow of powder and anti-caking; It has excellent transparency in term of unsaturated polyester resin.

TDS of the Fumed Silica  Standard: GB3778-2003

Product Varieties

M-150

M-200

M-300

M-380

Test Method

Nsa Surface Area(m2/kg)BETm2/g

150±30

200±30

300±30

380±30

GB/T20020-2005

Suspension of pH value (4%)

3.6~4.5

3.6~4.5

3.6~4.5

3.6~4.5

ISO787-9

Loss on drying (dry 2H under the condition of 105 ℃) %

≤1.5

≤1.5

≤1.5

≤1.5

ISO787-2

Loss on ignition (1000 ℃ calcination for 2 hours based on105 ℃ drying after drying for 2 hours) %

≤2.5

≤2.5

≤2.5

≤2.5

ISO3262-1

45um sieve residue %

≤0.05

≤0.05

≤0.05

≤0.05

ISO787-18

Silica Content%(based on calcined products )

≥99.8

≥99.8

≥99.8

≥99.8

ISO3262-20

Apparent density(based on105 ℃ after drying for 2 hours) g/L

25~60

25~60

25~60

25~60

ISO787-11

Carbon content(based on105 ℃ after drying for 2 hours) %

≤0.2

≤0.2

≤0.2

≤0.2

ISO3262-20

Safety:

As a matter of good industrial hygiene, gloves and safety glasses with side shields or better eye protection should be worn when handing Carbon Black ,For more information, refer to the MSDS.

                                       






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Different reactions have different catalysts, mainly catalyzed, to speed up the reaction rate
Q:Why does the chemical and chemical properties change before and after the reaction?
A catalyst that accelerates the chemical reaction, called a positive catalyst; a catalyst that slows the chemical reaction, called a negative catalyst. For example, the hydrolysis of esters and polysaccharides, commonly used inorganic acid as a positive catalyst; sulfur dioxide oxidation of sulfur trioxide, commonly used vanadium pentoxide as a positive catalyst, this catalyst is solid, the reactants for the gas, the formation of multi-phase catalytic, , Vanadium pentoxide is also called catalyst or contact agent; edible oil by adding 0.01% to 0.02% gallate n-propyl ester,
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A catalyst is a substance that speeds up a chemical reaction by providing an alternate reaction pathway with a lower activation energy. Catalysts appear not to take part in the reaction. Frequently, catalysts are not very reactive. Acids and bases, on the other hand, are very reactive. Acids (as H+) and bases ( as OH-) sometimes function as catalysts in some organic reactions. They appear to be catalysts because in the course of the mechanism H+ or OH- is regenerated.
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Q:Can you describe at least 4 ways a catalyst can lower the activation energy of a reaction?
To see how a catalyst accelerates the reaction, we need to look at the potential energy diagram shown below which compares the non-catalytic and the catalytic reaction. For the non-catalytic reaction, the figure is simply the familiar way to visualize the Arrhenius equation: the reaction proceeds when A and B collide with succificient energy to overcome the activation barrier. The change in Gibbs free energy between reactants, A + B, and the product P is delta G. The catalytic reaction starts by bonding of the reactants A and B to the catalyst, in a spontaneous reaction. Hence, the formation of this complex is exothermic and the free energy is lowered. There then follows the reaction between A and B while they are bound to the catalyst. This step is associated with an activation energy; however, it is significantly lower than that for the uncatalyzed reaction. Finally, the product P seperates from the catalyst in an endothermic step. The energy diagram illustrates 4 ways the catalyst works : The catalyst offers an alternative path for the reaction that is energetically more favorable The activation energy of the catalytic reaction is significantly smaller than that of the uncatalyzed reaction; hence the rate of the catalytic reaction is much larger The overall change in free energy for the catalytic reaction equals that of the uncatalyzed reaction. Hence, the catalyst does not affect the equilibrium constant for the overall reaction. A catalyst cannot change the thermodynamics of a reaction but it can change the kinetics. The catalyst accelerates both the forward and the reverse reaction to the same extent. In other words, if a catalyst accelerates the formation of product P from A and B, it will do the same for the decomposition of P into A and B.
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Recently, people are increasingly interested in the use of enzymes in cosmetics, not only from a technical point of view, but also from the market prospects and consumer awareness of these seemingly effective raw materials. Enzymes have been used in laundry detergent for more than 20 years and are linked to long-term performance with the ability to provide and enhance strong stain removal capabilities. According to some speculation, their positive response in the market may be interpreted as satisfying the aging population, the pursuit of younger needs to enhance the performance of cosmetics. The natural shedding process of the skin is controlled by the enzymatic reaction, and the specific enzyme dissolves the cell desmosomes that release the dead epidermal cells. These enzymes are produced in dead keratinocytes. Their active sites are phagocytosed with mercapto groups, and cleavage of peptide bonds in a manner similar to that of thio-glycolic acid and mercaptoalanine (plus derivatives) when the hair is broken. Use these types of enzymes and it
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Q:Catalyst & an exothermic reaction?
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Q:What are the properties of the catalyst (eg, specificity)?
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