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liquid silicone mould for plaster or gypsum or concrete
- FOB Price
US $8.25200 - 1,000 kilogram
US $6.201,001 - 9,999 kilogram
- group name
- RTV-2 silicone rubber for molds making
- Min Order
- 200 kilogram
- brand name
- Hong Ye silicone rubber
- model
- molding silicone rubber
- Nearest port for product export
- Shenzhen, Guangzhou, Xiamen, Shanghai
- Delivery clauses under the trade mode
- FOB, CFR, CIF
- Acceptable payment methods
- T/T, L/C, Westem Union
- Export mode
- Export through agents
- update time
- Thu, 14 Apr 2016 10:03:30 GMT
Paramtents
Sample Free
Certification: SGS,MSDS,RoHS
Hardness: 25-40 shore A
Mixing Ratio: 2-3%
Shelf life 12 month
Operating time (hour 25 0C ) 0.5
Elongation-break(%) 180-450
EINECS No: 39100000
Curing time(hour) 3-5
Curing agent: 3%for free charged
Packging & Delivery
-
Min Order200 kilogram
Briefing
2. High reproduction times
3. Good tensile strength
Detailed
liquid silicone mould for plaster or gypsum or concrete
1. Application for liquid silicone mould for plaster or gypsum or concrete
Liquid Silicone Rubber 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, Europe component factory, simulation landscapes, animals and plants sculpture, sandstone crafts and so on.
2. Instruction for liquid silicone mould for plaster or gypsum or concrete
Add curing agent of 2%-3% at the room temperature, the silicone rubber is still operational within 30 minutes, and in 2-3 hours.
1. Adding curing agent 1%, the silicone rubber can still be operated within 2.5 hours and can be Demoulded after 6-8 hours.
2. Adding curing agent 2%, the silicone rubber can still be operated within 50 minutes to 1 hour and can Be demoulded after 2-3 hours.
3. Adding curing agent 3%, the silicone rubber can still be operated within 28 - 30 minutes and can bedemoulded after 1.5-2 hours.
4. Adding curing agent 4%, the silicone rubber can still be operated within 10 - 15 minutes and can be demoulded after 1 -1.5 hours.
3.Standand datasheet of liquid silicone mould for plaster or gypsum or concrete
| Model | Color | Mixing ratio (%) | Operation Time (mins) | Demould | Hardness ( A0 ) | Tensile-strength (MPa) | Tear-strength (kN/m) | Dynamic Viscosity | Shrinkage | Elongation |
| time | (mPa.s) | rate (%) | (%) | |||||||
| ( hrs) | ||||||||||
| 625# | white/translucent | 100;3 | 30-40 | 3 to 4 | 25±2 | 3.4 | 24±2 | 25000±2000 | ≤0.3 | 410 |
| 630# | white/translucent | 100;3 | 30-40 | 3 to 4 | 30±2 | 4 | 26±2 | 27000±2000 | ≤0.3 | 420 |
| 638# | white/translucent | 100;3 | 30-40 | 3 to 4 | 38±2 | 4 | 25±2 | 25000±2000 | ≤0.3 | 450 |
| 640# | white/translucent | 100;3 | 30-50 | 4 to 5 | 40±2 | 3.5 | 21±2 | 15000±2000 | ≤0.3 | 180 |
4.Operation steps of liquid silicone mould for plaster or gypsum or concrete
Step One: Take 100g of part A and add 2g of part B and mix the silicone rubber and curing agent evenly.
Notes: Moulding silicon rubber is a kind of flowing liquid and it contains two parts. Part A is a kind of white flowing liquid and part B is the curing agent.
Step Two: vacuum pumping
Without exception, this step takes less than 10 minutes.
Note: The time for vacuum-pumping should be less than 3—5 mins , otherwise, once the silicone rubber has cross-link reaction during vacuumizing, it will not be operated.
Step Three: Brushing cast & Perfusion Molding operation
Why could the silicone mold be reused only for a few times?
It can be due to the following reasons:
a. Adding too much silicone oil in to silicon rubber. Silicon oil is an additive which destroies the molecular weight of silicone rubber and reduce the tension and tear strength.
b. Using the silicon rubber with a high hardness to make molds for small sized products with delicate and intricate designs and the silicon rubber with a low hardness to makes molds for large sized products with simple designs.
(Notes: we should choose the silicon rubber specifically according to the requirements of our products to avoid this problem.)
Need the price or other information for reference,please help us confirm some question first
1) How about the size of your products?
2) Will you make the silicone mold by pouring way or brushing way ?
3) What's the raw material of your products ? Plaster? resin or other?
Then we will according it to recommend the most suitable RTV silicone with the best price for your reference.