Mold Making Silicon Elastomers RTV 2 Molding Silicones Supplier

Product Description

 

Product Description

Rtv 2 Molding Silicones is a kind of elastomer, somebody also call it silicone elastomer. what OTT provide is RTV2 silicone rubber, it's liquid silicone which will vulcanize in both room temperature or heated temperature with good self-leveling ability. It including part A+ partB with mixing ratio 100:3, 1:1 or 10:1 for your choice.

Product Applications

Two Component Silicone Elastomers is used for mold making, life casting skin body making, pad printing and silicone insoles, electronic potting.

Mold making including gypsum,GRC,concrete,resin products etc Artificial stone products molding,Wax casting Decoration building mold making (cornice,column, balustrade, ceiling, pedestals, fountains, mantels, wall ornament, planter,furniture decorative etc.) Unsaturated rein crafts,epoxy resin crafts, poly resin crafts,polyester resin. Lighting & candles crafts,stationery gifts,crafts industry Casting for Statue,Buddha,Christmas ornaments,sculptures,figures etc

 

Product Parameters

Tin cure silicone

Typical general characteristics	Inspection Method	Model code
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

 

Platinum cure silicone

Typical general characteristics	Inspection Method	Model code
Product data (catalyzed A+B)		OTT-J8 series
Hardness	Shore A	5	10	15	20	25	30	35	40	50
Mix ratio	A:B	1:1/10:1
Color	/	Translucent
Pot life	25ºC(77F)	20-40 mins
Curing time	25ºC(77F)	3-5 hours
Viscosity	mPa.s	1500	3000	4000	4500	5000	6000	7000	8000	12000
Tear strength	KN/m	12	15	18	24	22	21	22	18	12
Tensile strength	MPa	2.2	4.2	5.2	5.2	6.2	6.5	7.2	7.8	7.0
Elongation	%	500	450	450	500	500	450	450	400	400
Shrinkage	%	0.1

 

Features:

1.Almost nil shrinkage

2.Good fluidity, operability and excellent operation

3.Good resistance to weather, temperature, aging, acid

4.Excellent tear strenght, comfortable duplcation times

5.High chemical resistance to aggressive components of some types of resins

6.Food grade silicone(environmental, odorless and nontoxic

7.High resistance to high temperature and aging(resist -60 to 200ºC)

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Instructions

EXAMPLE for mold making silicone:
1. Make sure the surface of the original is clean and free of loose material. 

2. Weight 100 Part A base and 3 parts of Curing Agent in a clean container.

3. Stir Part A base silicone before use thoroughly , as filler separation may occur upon prolonged storage.

4. Mix Part A and Part B evenly until the catalyst completely dispersed in the base. 

5. Pour the mixed Part A base silicone and curing agent as soon as possible onto the original

6. De-mold after 24 hours ,it is will improve the replicate times of silicone mold.

Note:It is strongly recommended that entrapped air be removed in a vacuum chamber, allowing the mix to completely expand and then collapse. After a further 1-2 min under vacuum, the mix should be inspected and can be used if free of air bubbles. A volume increase of 3-5 times will occur on vacuum de-airing the mixture. So a suitably large container should be chosen.

 

Packaging & Shipping

Packing : 20KG, 25KG, 200 KG per drum 
Shipping : by air & by sea 
Delivery time: within 4-6 days after your payment confirmed in our bank 
Storage: Storage in cool, dry places. 
Shelf life: 18 months with the original unopened package

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