LSR Liquid silicone rubber

1. Good flowability 2. Medium hardness 3. High tear and tensile strength 4. Easy de-mould 5.Low linear shrinkage

Applications:

Label manufacturing, Moulding applications requiring low shrinkage eg toys, jewellery, automotive, rapid prototyping etc.

 

 

Operations

 

1.  Mixing the two components

 

According the mixing ration 10:1 weighting A and B,the two components may be thoroughly mixed either by hand or using a low –speed electric to minimize the instroduction of air and to avoid any temperature increase. Note:It is also possible to use a special mixing and dispensing machine for the wo silicone components,Futher information is available upon request.

 

 

2. Moulding

 

The mixture should be degassed preferably at 30 to 50 mbar to eliminate any entrapped air.If a dispensing machine is used,the two components are degassed separately prior to mixing.The silicone mixture expands to 3—4 times of its initial volume and bubbles rise to the surface.The bubbles progressively disappear and the mixture reuturns to its initial volume after 5 to 10 minuts.Wait a few minutes to complete the degassing and then flash the vacuum.The silicone is ready for pouring,either by gravity or under low pressure.

 

Advantages

Easy curing: MC RTV1040 polymerises at room temperature(230 C).The curing characteristics are independent of part thickness.High TransparencyHigh tear and tensile strengthLong shelf life with low shrinkageFast mixing(10:1) and easy processing due to the low viscosity

Technical datasheet

Properties	RTV1040A	RTV1040B
Apperance	Viscous liquid	Liquid
Colour	Transparent	clear
Viscosity(at 230 ,mPa.s,approx.)	65,000	4,000
Specific Gravity(g/cm3,approx.)	1.08	1.08
Proportion(A:B)	100:10
Mixing viscosity(at 230 ,mPa.s,approx.)	55,000
Max working time(at 230 ,minutes)	30
Demoulding time(at 230 ,hours,approx.)	24
Hardness Shore A(after 24 h)	40
Tensile Strength(Mpa,after 24 h)	5
Elongation(%)	250
Tear Strength(N/mm)	20

  

 Storage and shelf life

MC RTV1040 A and B must be used within 6 months from the manufacturing date.

Beyoud this date,MC silicone no longer guarantees the products confirms with the sales

Specification.

In order to preserve best properties it is recommended to follow strictly the following guildlines:

l         Store the original packing tightly sealed and at a temperature below 30 C

l         Use the product as soon as the packaging has been opened.

 

Packaging

Part A: 20kg/drum Part B: 2 kg/drum

Special containers are available are on request.

Payment: cash, bank transfer,  T/T ,L/C at sight

Quality/security authentication: the RoHS, MSDS, SGS,REACH

 

The information above is just for reference, if you're interested or have any questions, please feel free to contact Nicole:

 

 

Tel: 86-15874272919

Web:www(dot)mcsilicone(dot)com

E-mail:nicole(at)mcsilicone(dot)com

Skype:nicoleszmc

MSN: nicoleszmc (at)hotmail(dot)com

 

 

LSR Liquid silicone rubber