2 Parts Tin Based Liquid Silicone Rubber for Craft Mould Making

Product Description

2 Parts Tin Based Liquid Silicone Rubber for Mould Making

Product Description

    RTV Silicone is generally named as two-parts silicone rubber that is vulcanized at room temperature, and used for model designing work of all kinds of products with simple or intricate patterns.
    Such as artificial stones, craft stones, gypsum crafts, GRC/GFRC, GRG, fireplaces, fountains, ornaments, resin crafts, resin marble works, shoe soles, Art sculptures, decorations, candles, soaps, PU, furniture moldings, etc.
    With good resistance to deformation, heat, acid, alkali and expansion, finished silicone molds have very good performance in reproduction process and fine details on designing models

Product Parameters

Part A: Silicone rubber is a white liquid

Part B: Catalyst is a non-toxic and odorless liquid, with transparent color.

ATT: We can provide fast/medium/slow catalyst for hot, warm or cold season.

1.The data are based on the operation under room temperature of 25°C.

2. The data-sheet of viscosity, hardness, working time, curing time can be adjusted according to your requirements.

Typical general characteristics	Inspection Method	Tin Cure Silicone/Condensation Cure Silicone
Product data (catalyzed A+B)		OTT-S8 series
Hardness	Shore A	5	10	15	20	25	30	35	40
Mix ratio	A:B	100:3
Color	/	white
Pot life	25ºC(77F)	20-40 mins
Curing time	25ºC(77F)	3-5 hours
Viscosity	mPa.s	5000	8000	11000	11000	16000	21000	18000	12000
Tear strength	KN/m	10	16	24	23	26	26	24	22
Tensile strength	MPa	1.6	3.2	3.5	4.2	4.5	4.5	4.2	4.0
Elongation	%	500	600	580	500	500	450	350	280
Shrinkage	%	0.2

 

• Features:

  1. Two-part silicon rubber: flowable liquid silicon and  tin catalyst.
  2. Cures at room temperature within 3-5 hours.
  3. An exceptional fluidity and good operability.
  4. Good tensile and tear strength, low shrinkage. High duplication times.
  5.High elasticity for easy removal of complex replica parts

  

Installation Instructions

Step 1: prepare the original molds
Make your original molds perfect. fix it on a board. And fix the original mold on a board , then used four piece of board to enclose the original molds . 
Step 2: Take 100 G parts A silicone rubber and add 3 G parts B curing agent and mix them evenly. 
*Notes: Mold making silicon rubber is a kind of flowing liquid ,it contains two parts. Part A is a kind of flowing white liquid and part B is the curing agent or catalyst .Pls follow the step strictly:
1.Weigh the two part exactly by electronic weight. If not, for example add too much catalyst , the operation time will be too fast to operate ,which will cause inconvenience to operate . 
2.Mix part A and part B evenly. Otherwise the silicon rubber will be partly solidified and this will give birth to difficulties in your final operation. What's more, the finished molds will meet a short life. All of these will cause a waste of silicon rubber. 
Step 3: Vacuum pumping(optional)
Without exception, this step takes less than 10 minutes. Otherwise, it will cause cross linking reaction, and no more further steps will be available. 
Step 4: Pouring casting or Brush operation
*Notes:1. For simple pattern products we suggest use pouring operation way, which will be very easy to operate and demould. Pourable silicone require low viscosity which will be easy to flow smoothly and easy to de-air . 
2.For delicate pattern products we suggest use brushing operation way, which can copy the pattern exactly. Brushable silicone require high viscosity which won't be easy to flow away and easy to brush. 
3. We sugges to set the silicone mold for another 12 hours after demould before you put it into a large production.

Certifications

Our Advantages

1.high quality similar to global big brand
2.18 months shelf life
3.50-1000 duplication time decided by product sizes
4.silicone non toxic, environment friendly
5.fast delivery within 4-6 days
6.shipment by air or by sea is available
7.24h after sales service 
8.professional R&D team

Packaging & Shipping

FAQ

1. What's silicone products you are making?
--liquid silicone, silicone rubber, silicone oil; Due to different silicone molds, our silicone has different viscosity, and cause different hardness, density to meet the requests from client.  

2. Do you offer free sample to client?
--Yes, we can provide the sample for test.  

3. How about the quality control in your factory?
--We have professional QC team to control the quality during production. Goods will be 100% inspected before shipment.  

4. How to remove the bubbles during my mould making?
--After mixing liquid silicone with curing agent, please put the material into vacuum machine to take off the bubbles.  

5. How to get good silicone mould to use longer time?
--The best way is:   
#A, Please choose the right liquid silicone according to your products.  
#B, Don't use any silicone oil in mold making, because it can make the silicone mould become too soft to use.   
#C, Silicone mould can be used longer after the whole silicone mould fully cured, so it's better to wait 2 hours after mould finished.  

6. Why silicone rubber add curing agent after mixing a lot of bubbles?  
--This is normal physical phenomena. The liquid will produce a large number of bubbles in the mixing time, so, it must pass through the vacuum exhaust bubble treatment.

Company Profile

    Guangzhou OTT New Materials Co., Ltd. is a leading professional manufacturer of RTV liquid silicone in China. We are a science and technology manufacturer, professionally focus on R&D for liquid RTV silicone, and provide a serial services of silicone such as molding, insoles, sexy dolls, electronics, relative silicone materials and latest developed products, etc