| Model: | E620 |
|---|---|
| Brand: | Hong Ye |
| Origin: | Made In China |
| Category: | Chemicals / Rubber Materials |
| Label: | environmental silico , silicone , additional silicone |
| Price: |
US $13.23
/ kg
|
| Min. Order: | 100 kg |
| Live Chat: | Last Online:30 Mar, 2017 |
Description
HY-E620 is a kind of two part silicone rubber in addition cure or platinum cure type with mixing ratio of 1:1 or 10:1 . It can cure at room temperature as well as under heat . It’s a kind of food grade silicone and mainly used for mold making.
Application
HY-E620 silicone rubber is mainly used for making molds of concrete stone,GRC,polyurethane products ; wax, candle decoration ; rapid prototyping and tyre molds; chocolate,candy and similar products .
Technical Parameters
|
Model |
Color |
Mixing ratio (%) |
Pot life (mins, under 25℃) |
Curing time
|
Hardness ( Shore A ) |
Tensile- strength (MPa) |
Tear- strength (kN/m) |
Viscosity （After A/B mixed ,mPa.s） |
Shrinkage rate (%) |
Elongation （%） |
|
HY-E620 |
Translucent |
1:1 |
30-40 |
4-5(hrs under 25℃) 20-30 (mins under 60℃) |
20±2 |
7.5±1.0
|
30±5
|
8000±1500
|
≤0.1% |
400% |
Characteristics
＊An exceptional fluidity and good operability, easy to demold
＊Good tensile and tear strength
＊Outstanding bubble releasing
＊Non-deformation
＊Low shrinkage
＊Aging resistance ,high temperature resistance (200℃)
＊Environmentally, food-grade
Operation instructions
Step 1: prepare the original molds
Prepare an perfect original mold and clean it totally before operation .
＊Notes:Make sure your original molds and operation tool cleaned up totally to avoid uncure problem .
Step 2: Take 100 G part A and 100 G part B (Or 100 G part A and 10 G part B) and mix them evenly.
＊Notes: Addition cure mold making silicon rubber is two part flowing liquid , Pls follow the step strictly:
1.Weigh the two part exactly by electronic weight..
If any part not in exactly weight , it may cause changing of hardness , or even cause uncure problem.
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
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 s est use pouring operation way , which will be very easy to operate and demould. Pourable silicone require light viscosity which will be easy to flow smoothly and easy to de-air .
2.For delicate pattern products we s est 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 s est to set the silicone mold for another 12 hours after demould before put into large production .
Warm tips :
1. As addition cure silicone is a kind of platinum cure system ,which will be easy to cause uncure problem ,so
Kindly follow the tips below :
＊Do not mix with liquid condensation silicone rubber or even the tool which used for condensation silicone
＊Do not mix with organic matter which contains N, S, P organics and ionic compound like Sn, As,Hg, Ph,
＊Do not add any pigment or powder into the addition cure silicone rubber without any testing to prevent uncure problem
Package
20KG/drum vacuum packing for part A + 20KG/drum vacuum packing for part B
200KG/drum packing for part A +200KG/drum packing for part B
Shelf life
Twelve(12) months when stored under dry and cool place by original package under 25℃
