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introduction of silicone sealant

2019-04-17

Room temperature vulcanized silicone sealant is made of base polymer with cross linking agent, catalyst, filler and other additives after mixing in a moisture-tight mixer, and then packaged in cartridge or foil sausage. It will cross-linked sulphur and form an elastomer after being exposure to moisture in the air when it is extruded from the packing. It has excellent performance between -100℃ and 315℃, it’s much better then other any other elastomer in this aspect. Weather resistance and aging resistance are its key features. What’s more,  it also has any other excellent performance, such as Electrical insulation, hydrophobicity, anti-sticking and biochemical compatibility and so on. It’s ta popular elastomer in various fields.


According to the product packaging, room temperature vulcanized silicone sealant can be divided into one component and two components. According to type of cross linking system, it can be divided into diabetic type, ketone oxime type, dealcoholization, deacetone and de-amide type. The advantage and disadvantage of they are as follow:


ClassificationAdvantageDisadvantage
Diabetic type

Good at Strength, transparency, adhesion.

Speed of vulcanization is fast.

Smells of acetic acid.

Corrosive to metals

Ketone oxime type

Not too much smell

Good adhesion to various materials.

Slightly corrosive to copper
Dealcoholization type

No smell.

No corrosive.

Speed of vulcanization is slow.

Poor preservation.

Adhesive is slightly worse

Deacetone type

Odorless, non-toxic.

Speed of vulcanization is fast.

Good at preservation, operability, sealing, heat resistance.

High cost 
De-amide typeOdorless, non-toxic, low modulusAdhesive is slightly worse


GenotypeApplication range
Feature
Diabetic typeGeneral purposeGlass joints, grid gap, glass suspension, glass sinkHigh modulus, transparent, fast curing,frowziness,corrosive to copper and iron
High grade transparentBuilt-in glass (showcase, window).Required transparent seams
Mould proofSeal of bathroom ,ceiling, toilets, sanitary ware.
Structure sealingSSG construction method
Ketone oxime typeGeneral purposeGlass joints, grid gap, metal joints. Assembly of residential, tile, ceramic tile, stone bondingHigh modulus, curing speed is medium, corrosive to copper
Mould proofSeal of bathroom ,ceiling, toilets, sanitary ware.
Inflaming retardingSeal of the gap in the fire zone
Dealcoholization typeGeneral purposeJoint seam of Polycarbonate, plexiglass and other transparent plastic, glass, copper and any other metal that is easy to corrodeNo causticity
Structure sealing
SSG construction method, glass curtain construction method
Deacetone type
General purposeGlass joints, slit sash, siding, railings and other sealing gap. Filling seal of highway, bridge, airport concrete pavement expansion joints.Low modulus, opaque, slow curing, slightly odorous, non-corrosive
De-amide typeGeneral purposeGlass joints, slit sash, siding, railings and any other sealing gap.Large sink.Low modulus, opaque, slow curing, slightly odorous, non-corrosive


* SGS construction method is the abbreviation of structural sealant glazing system


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