Hollow glass microspheres for Composites Industry

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  • 1 - 9 Metric Tons
    $4.60
  • >=10 Metric Tons
    $4.50
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Overview
Quick Details
CAS No.:
65997-17-3
Grade Standard:
Industrial Grade
Purity:
99.99%
Appearance:
White
Brand Name:
SINOSTEEL
Model Number:
H series
Packaging & Delivery
Packaging Details
Boxes with pallets Or Bulk bags with pallets
Port
Shanghai
Lead Time :
Within 7 working days

1. Description

Hollow glass microspheres ( also known as glass bubbles ) are hollow glass spheres made of chemically stable Soda-lime-borosilicate glass with thin walls(wall thickness 1~3.5μm). We have five grades available with true density ranging from 0.20g/cc~0.60g/cc, Sinosteel hollow glass microspheres can be used as lightweight functional additives for Composites,Thermal insulation paints/coatings, Sealant/adhesives, Low density cementing slurries and many more applications with very competitive quality and price.

2.True Density

 Product

Requirement

 (g/cc)

True Density (g/cc)

Minimum

Maximum

H20

0.20

0.18

0.22

H25

0.25

0.23

0.27

H32

0.32

0.30

0.34

H40

0.40

0.38

0.42

H46

0.46

0.44

0.48

H60

0.60

0.57

0.63

H60S

0.60

0.57

0.63

3.Nitrogen Isostatic Crush Strength

 Product

Test Pressure

 (MPa/Psi)

Target Fractional

Survival

Minimum Fractional

Survival

H20

3.5/500

90%

80%

H25

5/750

90%

80%

H32

14/2000

90%

80%

H40

28/4000

90%

80%

H46

41/6000

90%

80%

H60

55/8000

90%

80%

H60S

82/12000

90%

80%

4.Thermal Stability

Appreciable changes in glass microspheres properties may occur above 625°C depending on temperature and duration of exposure.

5.Chemical Resistance

In general, the chemical properties of hollow glass microspheres resemble those of a soda-lime borosilicate glass.

6.Thermal Conductivity

 Product

Thermal Conductivity

(W·m-1·K-1) at 20°C

H20

0.0353

H25

0.0416

H32

0.0466

H40

0.0521

H46

0.0603

H60

0.0643

H60S

0.0643

 

 7.Particle Size

Product

Particle Size(μm, by volume )

10%

50%

90%

d50

Size

H20

35

65

120

68

2-150

H25

30

60

115

60

2-150

H32

25

55

105

55

2-130

H40

25

50

90

48

2-100

H46

25

50

90

46

2-100

H60

25

50

85

43

2-95

H60S

25

50

85

43

2-95

8.pH

Glass bubbles are dry powder,when mixed with deionized water at 5% volume loading, the resulting pH of the slurry is 7~9

9.Appearance

Free flowing white powder.

10.Free flowing properties

Hollow glass microspheres remain free flowing for at least half a year from the date of shipment if stored properly.