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Hollow glass microspheres

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Hollow glass microspheres

CAS No:65997-17-3

Particlesize (um) ----------------------------------------------------0.2--40  70--380   
Ball-type rate
 %-------------------------------------------------------------->95
Bulk specific weight(g/ cm3)  --------------------------------- 1.0---1.8   0.3---0.8
Refractoriness (℃
) -----------------------------------------------------1200--1750
Dielectric constant(e
)---------------------------------------------------- 2.3--2.4
Oil absorptiong(oil)/100g-------------------------------------------------16---18
Luminous reflectance (%)---------------------------------------------- 16---17
Mohs hardness-----------------------------------------------------------------5-7
Charring ablative rates
(%)--------------------------------------------------<1
Heat conductivityw/m·k-----------------------------------------------0.07---
0.12
Compressive strength(kg/ cm2
)-------------------------1000—7000    100-350
Volume resistance(
cm)---------------------------------------------1.5 x 1010
BET(m2
/g)-------------------------------------------------------------------1.9 ( 3um)
Light diffusing rate
(%)-------------------------------------------------80---88

Applications: Its applications are in the fields of Thermal insulation coating, putty, plastic casting polyester, FRP ,SMC, synthetic foam, adhesives, printed circuit board substrate, RTM, bowling, fan blades, & caulking materials, emulsion explosives, golf, sealant, pipeline insulation materials, artificial marble, PVC foam, low density oil drilling, light cement, and other deep-sea buoy etc.

Advantages: The products filled with hollow microsphere have advantages of light weight, smooth and beautiful appearance, and lower cost.

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