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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