silica micropowder 7440-21-3 china silica micropowder silica micropowder Factory

• Post Date:

  Jul 24,2013

• Expiry Date:

  Jul 24,2014

• Detailed Description:

  silica micropowder 7440-21-3 china silica micropowder silica micropowder Factory
  Product technical index:
  
  Appearance: white powder
  
  Whiteness%≥: 93.5
  
  PH range: 6.5-7.5
  
  Partical size: D50/1.86μm, D90/4.34μm, D97/5.0μm, D100/9.09μm
  
  Thermal expansion coefficient(20-300℃）: 53X10-6K-1
  
  Hardness: 7 Moh's hardness
  
  Specific gravity(t/m3): 2.35-2.65
  
  Refractive index: 1.50N
  
  Moisture%≤: 0. 05
  
  Oil absorption(ml/100g): 18-22
  
  Melting point℃: 1750
  
  Product conventional ingredients:
  
  
  
  No.
  
  Ingredient
  
  Content %
  
  1
  
  LOSS(1025℃)
  
  0.05
  
  2
  
  aluminium oxide ALO
  
  0.35
  
  3
  
  silica SiO
  
  99.53
  
  4
  
  Iron(III) oxide FeO
  
  0.007
  
  5
  
  Calcium oxide CaO
  
  0.01
  
  6
  
  Magnesium oxide MgO
  
  0.01
  
  7
  
  potassium oxide KO
  
  0.01
  
  8
  
  sodium oxide NaO
  
  0.02
  
  9
  
  Titanium(IV) oxide TiO
  
  0.01
  
  
  
  SGS ROHS testing result:
  
  Testing item
  
  limiting value
  
  unit
  
  MDL
  
  1
  
  cadmium(Cd)
  
  100
  
  mg/kg
  
  2
  
  ND
  
  lead(Pb)
  
  1000
  
  mg/kg
  
  2
  
  ND
  
  mercury(Hg)
  
  1000
  
  mg/kg
  
  2
  
  ND
  
  hexavalent chromium(Cr(VI))
  
  1000
  
  mg/kg
  
  2
  
  ND
  
  PBBs
  
  1000
  
  mg/kg
  
  -
  
  ND
  
  PBDEs
  
  1000
  
  mg/kg
  
  -
  
  ND
  
  
  
  Physical performance:
  
  1.Superior optical performance: refractive index 1.45N;
  
  2.High whiteness, low density and bright clean luster;
  
  3.Weather resistance, corrosion resistance, wear resistance, non-containing of organic material, fine uvioresistant performance and insulativity;
  
  4.Fine thermal shock resistance.
  
  
  
  Packing, valid period and storage condition:
  
  Packing specification: 800×400×100, 800×450×120
  
  Material quality: import packing paper, plastic film and PVC inner film
  
  Net weight: 25(20,40,50）KG/bag
  
  Valid period: 3 years
  
  Storage condition: The product should be away from moisture and easily to absorb moisture. Therefore it should be stored in sealing, normal temperature and dry condition.
  
  Product advantages:
  
  High hardness, low oil absorption, fine dispersity, corrosion resistance, thermal shock resistance, insulation, long valid period, high temperature resistance, wear resistance, acid-resistance and alkali-resistance
  
  Product uses:
  
  Rubber industry: silicon rubber, silica gel, tackiness agent, sealing compound and plastic;
  
  Plastic industry: electrical equipment shell, plastic product, construct tubular product;
  
  Coating industry: engineering industrial coating, external wall emulsion paint, water proof emulsion paint, automotive coating;
  
  Printing ink industry: metal printing ink, silica gel ink, plastic gel ink and electrical ink;
  
  Other industry: glazing, ethoxyline resin, electrical equipment adding etc.
  
  *Lower silicon micro powder oil absorption
  
  *Best effect is tested by your application!
  
  Notes:
  
  1. Guangzhou Yongjiu Import& Export Trading Co., Ltd. has became the supplier of over 30 domestic and abroad middle or large enterprises and listed companies in plastic, silicon rubber, coating, epoxy resin and printing ink industries. Our 8 series products are Q1506,Q2503,Q2505,Q2506,Q3503,Q3505,QM01,QM02.
  
  2.We can provide our products with SGS report, examining report, MSDS, Europe and America particle size report, product specification and shipment report.

• Company:

  Guangzhou Yong Jiu Import and Export Trading Co., Ltd     [ China ]        

• Contact:

  Wan

• Tel:

  020-82573157

• Fax:

  020-22191220

• Email:

  1217038972@qq.com