Semi-Fluid Silicone Sealant
u Technical Data Table
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Semi-Fluid Silicone Sealant |
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Performance indicators |
591W |
591B |
591T |
581 |
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Appearances |
White semi-fluid |
Black semi-fluid |
Translucent semi-fluid |
By choice |
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Densities（g/mm3） |
1.15 |
1.15 |
1.02 |
1.15 |
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Surface drying time（min） |
10~30 |
10~30 |
10~30 |
5~15 |
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Tensile strength（MPa） |
1.0 |
1.0 |
1.0 |
1.0 |
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Elongation（%） |
200~300 |
200~300 |
200~300 |
200~300 |
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Hardness（shore A） |
30~50 |
30~50 |
20~30 |
20~30 |
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Shearing strength（MPa） |
≥0.5 |
≥0.5 |
≥0.5 |
≥0.5 |
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Dielectric strength（kv/mm） |
≥20 |
≥20 |
≥20 |
≥20 |
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Loss factor（1.2MHz） |
0.001 |
0.001 |
0.001 |
0.001 |
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Volume resistance（Ω·cm 25℃） |
1.0×1015 |
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Working temperature range（℃） |
-60~250 |
-60~250 |
-60~250 |
-60~250 |
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Wire shrinkage（%） |
0.3 |
0.3 |
0.3 |
0.3 |
u Features and Uses
Semi-flow silicone sealant is a class of one-component room temperature curing neutral silicone materials, cured elastomer. It has excellent resistance to hot and cold alternating properties, aging resistance, flexibility, insulation, moisture, shock, corona resistance, resistance to leakage, and is a replacement for the traditional 703, 704 silicone rubber, suitable for electronic circuit boards, part of the electronic components of the local encapsulation protection.
u Typical Applications
591W Silicone Rubber Sealant: Deoxime type, white color, encapsulation of electronic components such as electrical modules.
591B Silicone Rubber Sealant: Deoxime type, black colour, adhesive sealing for electronic components, circuit boards, relays, microwave ovens, etc.
591T Silicone Rubber Sealant: Deoxime type, semi-transparent, with transparent requirements of all kinds of electronic components encapsulation protection.
581 Silicone Rubber Sealant: Dehydrated, various colours, non-corrosive to polycarbonate (PC), copper and other materials, used for all kinds of electronic components encapsulation protection.
u Operation process
1. Clean surface: Tidy up the surface of the sealed object and remove rust, dust, moisture and oil.
2. Sizing: Unscrew the cap of the hose, prick open the sealing mouth, squeeze the glue to the cleaned surface, and make it flow naturally into a semicircle.
3. Curing: the glue absorbs the moisture in the air, the surface begins to solidify, gradually to the deep curing, in 24 hours (room temperature and 60% relative humidity) within the curing depth of 3~4mm. Summer temperature is high, high humidity, curing will be faster; winter temperature is low, low humidity, curing will be slower.
u Notes
1. Silicone rubber absorbs moisture and cures, unused rubber should be sealed and stored.
2. Sealed storage in a cool and dry place for 9 months.
