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Characteristics
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1?colloidal?Silica??belongs?to?adhesive?,liquid?silica.
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2?It?is?odorless,?tasteless?and?non-toxic.
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3?Its?chemical?molecular?formula?is?mSiO2.nH2O.
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4?Since?the?colloid?grains?are?minute?(10-20nm)?and?have?relatively?larger?specific?surface?area,?the?grains?
themselves?are?colorless?and?transparent,?so?they?do?not?affect?the?natural?color?of?the?materials?to?be?covered.
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5?With?low?viscosity,?it?can?soak?the?places?where?water?soaks,?therefore,?it?shows?excellent?dispersion?and?permeability?when??mixed?with?other?substances.
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6??When?the?moisture?contained?in?colloidal?silica?is?evaporated,?the?colloid?grains?firmly?adhere?to?the?material?
surface?and?the?combination?of?silicon?and?oxygen?is?then?formed?between?grains.?It?is?a?good?adhesive.?
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Usage
Used?as?the?cohesive?agent?for?various?fireproof?materials.?It?has?high?bonding?strength?and?high?heat-resisting?performance?(1500-1600°C),?etc.?
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Used?in?coating?industry.?It?makes?the?paints?firm.?It?also?possesses?features,?such?as?anti-contamination,?dustproof,?anti-aging,?fireproof,?etc.?
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Used?in?precision?casting?of?thin?covers?to?increase?the?cover?strength,?inprove?the?casting?smooth?finish.?Its?molding?quality?is?better?than?that?of?water?glass.?It?can?be?used?to?replace?ethyl?silicate?for?molding?so?as?to?reduce?the?costs?and?help?improve?the?operating?conditions.?Having?large?specific?surface?area,?silica?sol?can?be?use?for?making?catalyst?and?as?catalyst?carrier.?
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Used?in?paper-making?industry.?Can?be?used?as?the?anti-glutinous?agent?of?cellophane,?pre-treatment?agent?of?photographic?paper,?skidproof?agent?of?cement?bags,?etc.?
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Used?as?sizing?agent?in?textile?industry.?When?used?with?oil?agent?to?process?wool?and?rabbit?hair,?it?helps?improve?
the?processing?of?wool?and?rabbit?hair,?reduce?broken?ends,?eliminate?flyings,?thus?improve?the?finished?product?rate?and?increase?the?economic?returns.?
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Used?as?the?treatment?agent?of?silicon?steel?plates,?dispersing?agent?of?kinescopes?and?skidproof?agent?of?floor?waxes,?etc.
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Technical Data
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ITEM | Basic?sodium?type | Acidic?non-stabilizer?type | |||||
JN--20 | JN--25 | JN--30 | JN--40 | SW--20 | SW--25 | SW--30 | |
SiO2,?% | 20.0-21.0 | 25.0-26.0 | 30.0-31.0 | 40.0-41.0 | 20.0-21.0 | 25.0-26.0 | 30.0-31.0 |
Na2O,?%?≤ | 0.30 | 0.30 | 0.30 | 0.40 | 0.04 | 0.05 | 0.06 |
PH?value | 8.5-10.0 | 8.5-10.0 | 8.5-10.0 | 9.0-10.5 | 2.4-4.0 | 2.4-4.0 | 9.6 |
Viscosity?(25),mp?a.s?≤ | 5.0 | 6.0 | 7.0 | 25.0 | 5.0 | 6.0 | 7.0 |
Density?(25),g/cm3 | 1.12-1.14 | 1.15-1.17 | 1.19-1.21 | 1.28-1.30 | 1.12-1.14 | 1.15-1.17 | 1.19-1.21 |
Average?particle?diameter,nm | 10-20 | 10-20 | 10-20 | 10-20 | 10-20 | 10-20 | 10-20 |
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Term of validity
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One year for the alkali based, half a year for the acid based.
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Packaging
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25kg or 250kg per plastic drum.
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Conditions for storage and transportation
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Maintain 0-40°C during storage and transportation to avoid freezing of exposing to the sun.?
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Special?Note
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Technical?information?and?data?above?is?based?on?the?best?information?on?effective,?and?does?not?provide?any?
guarantee?and?no?suspected?infringement?of?any?patent.?User?prior?to?use,?has?the?responsibility?for?testing?the?
suitability?of?the?product.
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