Silicon Rubber, RTV Silicone Rubber for PU Fountaimaking, Liquid Silicone Rubber manufacturer / supplier in China, offering Liquid Mold Making Silicone for PU Castings, RTV Rubber for Plastic Products Molding, Silicone Rubber for Concrete Flower Pot Molds and so on.
|Purchase Qty. / Reference FOB Price|
|200-1,999 kg||US $16|
|2,000+ kg||US $8|
|Payment Terms:||L/C, T/T, Western Union, Paypal|
|Raw Material:||Silicone Rubber|
|Application:||for PU Casting|
|Certifications:||RoHS, MSDS, SGS, ISO9001:2000, UL|
|Delievery Time:||3-5 Days After Obtaining The Payment|
|Transport Package:||25kg/Drum 200kg/Drum|
1.Condensation Silicone Rubber HY-635 is generally named two-component silicone rubber, white color, with mixing ratio of 2%~5%.
It is flowable liquid silicone & curing agent. It gets cured at room temperature 25ºC within 4-6 hours.
Very suitable for both pouring and brushing methods of operation for medium sized and large sized molds making.
HY-635 is widely used to make molds for GRC products, such as GRC screen, GRC panels, etc.
It is also applicable for concrete stones, PU/poly resin products, unsaturated resin products, plaster products, fibreglass products, gypsums crafts, cement statues, etc.
|Mixing Ratio (%)||3~5|
|Tensile-strength(kgf /cm2 )||4|
|Tear-strength (kgf /cm )||25±2|
(Note: Other hardness is adjustable according to customers' requirements.)
1). Low shrinkage
2). Good fluidity, good operability, good for pouring method;
3). Excellent mechanical properties, in particular tear strength and tensile strength;
4). High duplication times and repeated use;
5). High temperature resistance, High simulation;
6). Adjustable for various applications with various requirements on the operation time or curing time.
5. Operation Instructions
The mixing ratio & operation time
1). If you add curing agent 1%, the silicone material can be operated within 2.5 hours and the
mold can be demoulded after 6-8 hours.
2). If you curing agent 2%, the silicone material can be operated within 50 minutes to 1 hour and
the mold can be demoulded after 2-3 hours.
3). If you add curing agent 3%, the silicone material can be operated within 28 - 30 minutes and
the mold can be demoulded after 1.5-2 hours.
4). If you add curing agent 4%, the silicone material can be operated within 10- 15 minutes and
the mold can be demoulded after 1 -1.5 hours.
Product size & hardness
If the product is of small size with detailed patterns, the soft silicones 10 shore A to 20 shore A are recommended;
If the product is of very large size, the hard silicones 30 shore A to 40 shore A are recommended;
If the product is of large size with detailed patterns, the moderate silicone 30 shore A is recommended;