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Hollow glass microsphere (337620)
Details:

Hollow glass microsphere is a kind of ultra-lightweight inorganic non-metallic material with hollow structure, and it is a versatile and high-performance new lightweight material developed in recent years. Its true density is 0.20-0.60g/cm3 with 2-150μm in diameter. It features light weight, large bulky, low thermal conductivity, high compressive strength, smoothly mobility, etc. It can be used in paint and coatings, rubber, plastics, FRP, artificial stone, putty and other products as filler and weight-reducing agent. Because of its high compressive properties, it can be used to produce high-strength, low-density cement slurry and low-density drilling fluid in oil and gas extraction industry.
 

1. Chemical composition

Silica(SiO2)

68-75%

Soda(Na2O)

22-30%

Lime(CaO)

Others

2-3%


2. True Density

 Product

Requirement

 (g/cm3)

True Density (g/cm3)

Minimum

Maximum

H20

0.20

0.18

0.22

H25

0.25

0.23

0.27

H32

0.32

0.30

0.34

H38H

0.38

0.36

0.40

H40

0.40

0.38

0.42

H46

0.46

0.44

0.48

H60

0.60

0.57

0.63

Y12000

0.60

0.57

0.63


3. Nitrogen Isostatic Crush Strength

 Product

Test Pressure

 (MPa/Psi)

Target  Fractional

Survival

Minimum Fractional

Survival

H20

3.45/500

90%

80%

H25

5/750

90%

80%

H32

14/2000

90%

80%

H38H

38/5500

90%

80%

H40

28/4000

90%

80%

H46

41/6000

90%

80%

H60

55/8000

90%

80%

Y12000

82/12000

90%

80%


4. Thermal Stability

Appreciable changes in glass microspheres properties may occur above 600°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

0.039

H25

0.045

H32

0.050

H38H

0.054

H40

0.056

H46

0.062

H60

0.074

Y12000

0.078


7. Flotation

 Product

 Floaters (% by bulk volume)

Typical

Minimum

H20

96%

93%

H25

96%

93%

H32

96%

92%

H38H

95%

92%

H40

95%

92%

H46

95%

92%

H60

95%

92%

Y12000

95%

92%


8. Oil Absorption

0.45-0.65g oil/cm3 of hollow glass microspheres.


9. 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

H38H

22

40

70

40

2-100

H40

25

50

90

48

2-100

H46

25

50

90

46

2-100

H60

25

50

85

43

2-95

Y12000

25

50

85

43

2-95


10. pH

7-9


11. Appearance

White.


12. Flow

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


13. Storage and Handling

Storage:

Store in dry, well ventilated and out of direct sunlight place. Have Waterproof Functions. Keep away from fire and heat. Store away from acids and mixed storage not allowed. With the suitable material for leakage in storage area.

Handling:

Airtight operation and local exhaust. The operator should be treated professionally and observe instructions seriously. The operator is suggested to wear self-inhalation filter type dust mask, protective chemical safety glasses, and protective gloves. Avoid producing dust and contacting with acids. Handle gently when loading and unloading to avoid breakage of packages. Equipped with emergency treatment equipment to avoid leakage.


14. Health and Safety Information

For product Health and Safety Information, refer to product label and Material Safety Data Sheet (MSDS) before using product.


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