Liquid Silicone rubber for concrete moulding

Product Description Application of  Liquid Silicone rubber for concrete moulding:   1. Resin crafts, unsaturated resin crafts.   2. Poly resin crafts, candle crafts, plastic crafts.   3. Making molds forgypsum,GRC,concrete,Artificial stone products molding,Wax casting.   4. Decoration building mold making.   5. Lighting & candles crafts,stationery gifts,crafts industry.   6. Casting for Statue,Buddha, Christmas ornaments,sculptures,figures,etc     Features of Liquid Silicone rubber for concrete moulding: 1. Two part of liquid fluid: liquid white silicone and curing agent. 2. Cure at room-temperature within 4-8 hours, but all performance will act perfectly when it cure within 2 - 4 hours. 3. Good fluidity and excellent operation. 4. Good resistance to weather, temperature, aging, acid. 5. Excellent tear strength, comfortable duplication times.   Datasheet: Base and Curing Agent Mixture (100:3 by weight) in 25 °C (77F) testing.

Typical general characteristics	Inspection Method	Value
Product data (Catalyzed A+B)		S815	S820	S825	S830	S835	S840
Hardness	Shore A	15±2	20±2	25±2	30±2	35±2	40±3
Mix Ratio	A:B	100:3	100:3	100:3	100:3	100:3	100:3
Color	/	White/translucent	White/translucent	White/translucent	White/translucent	White/translucent	White/translucent
Pot life	25 °C (77F)	20-40mins	20-40mins	20-40mins	20-40mins	20-40mins	20-40mins
Curing time	25 °C (77F)	3- 5hrs	3- 5hrs	3- 5hrs	3- 5hrs	3- 5hrs	3- 5hrs
Viscosity	mPa·s	8000± 3000	14000± 3000	15000± 3000	21000± 3000	18000± 3000	19000± 3000
Tear-Strength	KN/m	≥25	≥28	≥28	≥28	≥25	≥23
Tensile -Strength	MPa	≥3.8	≥4.5	≥4.8	≥4.8	≥4.2	≥4.0
Elongation	%	≥500	≥500	≥500	≥450	≥400	≥300
Shrinkage	%	≤0.2	≤0.2	≤0.2	≤0.2	≤0.2	≤0.2

      Operation Instructions of Liquid Silicone rubber for concrete moulding:

RTV-2 liquid mold silicone rubber is a kind of flowing liquid, and it consists of two component, part a is a flow-able liquid silicone rubber, part B is the curing agent.   1. Firstly, after your previous work of dealing with the original model, take some liquid silicone rubber, add 2%~3% cuing agent of the amount of silicon and mix themevenly.   2. Then after vacuum-pumping the mixture, you can pour it into the mold frame.   3. The silicone mold will cured in 2~3 hours.   Note: the time for vacuum-pumping should be less than 3-5mins, otherwise, once the silicone rubber has cross-link reaction during vacuum. it will not be operated.     Packaging & Shipping   Part A(silicone):1kg/bottle, 5kg/drum, 25kg/drum, and 200kg/drum. Part B(catalyst):40g/bottle, 0.2kg/bottle, 1kg/bottle, and 2kg/bottle.     FAQ   If you need any help on silicone rubber, please feel free to contact Mr. Jack: Email: jackottsilicon(at)126.com Skype: jackottsilicon(at)126.com Phone: 86-020-86819712 Fax:86-020-86812232 Web: www.ottsilicone.com