Brief description of molding silicone rubber:
1.Favorable hardness
2.High temperature resistance
3.Radiation-proof
4.Easy-operation
Applications of molding Silicone rubber
Silicon rubber for brushing molding is mainly used for the mold making of large size products making in multiple pieces, reliefs, arts & crafts.
Poly technique, lightings, candles, and molds in multiple pieces for large products.
Poly technique, lightings, candles, and molds in multiple pieces for large products.
Description:
Brushing silicon is mainly used for toy gifts and craftwork gifts with the advantages of good tensile strength, high tear strength, high temperature resistance, high duplication times and repeated use, etc. It is suitable for small products or fine and precision products which is difficult to demould. This brushing silicon is one of the products with the highest use level in the production of craftwork gifts and the shrinkage is up to 2‰.
Description of molding silicone rubber
Silicon rubber for molding making is primarily intended for poly resin crafts,PU crafts,PU resin crafts ,gypsum crafts ,unsaturated resin crafts, lighting and candles crafts ,plastic toy , stationery gifts crafts industry, a large statue Buddha, relievo furniture, furniture decorative materials, statues Buddha, artifacts copied, building decoration materials, large-scale cement mold, artificial fossils Factory,simulation landscapes, animals and plants sculpture, sandstone crafts and so on.
Datasheet of silicone rubber
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Model
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Appearance
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Viscosity (cps)
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Hardness (A°)
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Tensile strength (Mpa)
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Tear strength (KN/m)
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Elongation (%)
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Mixing ratio(%)
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Operating time(H)
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Curing time(H)
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728
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White
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≤27000
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25±2
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≥3.0
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≥20
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≥380
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2~3
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0.5~1
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2~5
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High Quality Silicon Rubber For Making Molds(General Description)
RTV-2 molding silicon rubber and brushing silicon are general called two-component room temperature vulcanization silicon rubber with excellent fluidity and good operational performance. Add curing agent of 2%-3% at the room temperature, the brushing silicon is still operational within 30 minutes,and in 2-5 hours, an elastic silicon mold will be obtained with resistance to deformation, high-temperature, acid and alkali and expansion. The brushing silicon is mainly applicable to mold duplication of poly crafts, resin craftworks, lightings, candles, etc. and fabrication of precision molds.
High Quality Silicon Rubber For Making Molds( Operation Instruction):
The brushing silicon is white or red flowing liquid with general hardness of 23—27A°after curing . If the customer wants to make large products and large size molds, the mold should be made of silicon rubber with high hardness. On the contrary, if the mold with fine and precision patterns , it should be made of silicon with low hardness. The amount of the curing agent depends on the actual requirements of the customer. If molds requiring fast drying and demould, more curing agent is needed; contrarily, if molds requiring slower drying and demould, less curing agent is needed.
(Note: our company does not recommend you to add silicone oil. If a special soft silicon mold or fine detailed and complex patterns products are required, 5%-10% silicon oil can be added to soften the mold for easy demould.)
Frequently asked questions of silicone rubber
Why does the silicone rubber mold have few molding times?
The silicone rubber mold has few molding times is due to follwoing reasons: adding too much silicone oil which will destroy the molecular of silicone rubber; making the mold for small and fine detailed products with higher hardness silicone rubber which is easy to break; making the mold for large products with soft silicone rubber which will reduce the tensile and tear strength of the mold, and the mold will have deformation. Thus, we should take the proper silicone rubber to make the mold for suitable products.
Any questions of silicone rubber for mold making, please feel free to contact Ms Fiona