Characteristics
1. HJSIL® 150/200/300/380 is a kind of hydrophilic fumed silica with
a specificsurface area of 150/200/255/300/380 m2 /g. It's high purity
white colloidal powder.
2.HJSIL® R100/612/615/618/620 is a kind of hydrophobic fumed silica,
treated withHMDS (hexamethyldisila- zane) and based on hydrophilic
fumed silica. 1. Hydrophilic silica:
A. Definition:Through the volatile, made by hydrolysis in the
oxyhydrogen flame.It can be wet by water, and can be dispersed in
water
B. Basic property:White fluffy powder, porous, non-toxic tasteless
non-polluting, high temperature resistance.Its chemical inertness
and special thixotropic performance significantly improve the
tensile strength, tear resistance and abrasion resistance of rubber
products etc.
C. Application: coating, oil paint, unsaturated polyester resin and
film; Elastomer, mainly hot vulcanization and room temperature
vulcanized silicone rubber;Adhesives, sealants, printing ink, etc
2. Hydrophobic silica:
A Definition: made by adding modified materials. And it is not wet by
water. B Property It is the optimum rheological additives in processing
production.Polar liquid thickening, such as epoxy resin.
Organosilicon elastomer reinforcement, high content, such as in
moulded products.Good hydrophobic property, improve corrosion,
improve the dielectric properties, such as in cable
compounds.Powder flow aid, such as in fire extinguishing agent,
improved scratches resistance in the paint and plastic. C. Application¼šUsed in the complex polar liquid, such as epoxy
resin, polyurethane, vinyl resin, has thegood thickening and
thixotropic effect;Used in fiber cable as thickening and
thixotropic agent;High density fillers asanti-settling agent;In a
composite materials;Glass flake resin, vinyl resin coating, printing
ink and adhesive, and other industries, especially in the strong
polarity systemsuch as vinyl, epoxy and polyurethane, as
thickening and thixotropic agent, anti-settling additive, isan
adapted strong polarity solution product.
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