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发布时间:2019-08-13 00:00:00
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HB-139

HB-139 is hydrophobic fumed silica which is produced by HL-200 after chemical post-treatment with PMDS (Polydimethylsiloxane).
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Product description

Characteristics

HB-139 is hydrophobic fumed silica which is produced by HL-200 after chemical post-treatment with PMDS (Polydimethylsiloxane).

 

Applications

Silicone rubber

Coatings and printing ink

Adhesives and Sealants

Greases and cable gel

Unsaturated resin

Powders

Properties

Good thickening and thixotropy property

Good anti-sagging properties and excellent stability in epoxy resin

Excellent reinforcing properties in silicone rubber especially at high filler loading levels and no crepe hardening on aging

Good transparency performance

Free-flow property for water-proof material and powders

 

Physical & Chemical Data

Properties Unit Typical Value Testing Method
pH value in 4% dispersion H2OEthanol=1:1 - 5.5~7.5 GB/T 20020
Loss on drying(2 hours at 105℃) % ≤1.5 GB/T 20020
Loss on ignition(2 hours at 1000℃ based on material dried for 2 hours at 105℃) % ≤10 GB/T 20020
Silica Content(Based on ignited material) % ≥99.8 GB/T 20020
Tamped Density(Based on material dried at 105℃ for 2 hours) g/dm³ 40~60 GB/T 20020
Carbon Content (Based on material dried at 105℃ for 2 hours) % 4.5~6.5 GB/T 20020

 

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