rtv 2 molding silicone rubber silicon rubber for sculpture mould making
640# Pouring Molding Silicone Rubber Applications:
640# Pouring Molding Silicone Rubber with the hardness of 38-42 shore A, is specially suitable for large crafts mould making and duplication of poly resin crafts in pouring way, PU crafts, gypsum or plaster, unsaturated resin, lighting and candles crafts, plastic toy, stationery gifts crafts, large statue buddha, furniture decoration, cement, articficial stone, etc.
Advantages of 640# Pouring Molding Silicone Rubber: light viscosity, pourable effort, good fluidity, easy-operation, good tension and high tear strength.
640# Pouring Molding Silicone Rubber Features:
Model
|
Viscosity
(cps)
|
Hardness
(Ao)
|
Tensile Strength (Mpa)
|
Tear Strength (KN/m)
|
Elongation
(%)
|
Mixing ratio (%)
|
Operating Time(H)
|
Curing Time(H)
|
640
|
≤10000
|
38+/-2
|
≥3.0
|
≥16
|
≥260
|
2-3
|
0.5-1
|
2-5
|
640# Pouring Molding Silicone Rubber operation:
It is suitable for simple products with smooth surface and no any mold lines, which helps you save time and is easy for operation. Paint a layer of release agent on the product first, then make a square frame by 4 pieces of plastic or glass board to surround the product, the next step is to perfuse the mixed silicone rubber evenly and slowly into the square frame, after the cross linking reaction and the silicone rubber turns dry, you can take the products out, thus the mold has been done.
(Note: we usually use soft silicone rubber to make molds by perfusing, which is easy for demoulding and will not damage the product in the silicone molds.)
640# Pouring Molding Silicone Rubber FAQ:
Why is the silicone rubber mold oily?
Basically, molding silicone rubber doesn't contain any oil, so it won't be oily. The reasons for the oily molds can be deducted from the below 3 factors:
1. Added white oil, which is the compound of silicone oil and white oil. The white oil is not silicone oil but a kink of petrochemicals;
2. Added too much silicone oil. Normally, we donot advise our customers to add any silicone oil into silicone rubber. If necessary, the ratio must be 5%-10%;
3. Added too much curing agent, this is another reason for oily mold.
Any questions of 640# Pouring Molding Silicone Rubber, please feel free to contact Aaron:
TEL: 086-755-89948006
FAX: 086-755-89948030
MOBILE:086-13622300503