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[China]
Trade Verify
Address: Room 1920 Building 4, Jianfa Fortune Plaza, 191 Tongyi St., Qingyang District, Chengdu, China
Contact name:Chen
Chenguang Fluoro & Silicone Polymer Co.,Ltd |
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Verified Suppliers
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Precision Mold Making Silicone Rubber
Description
Characteristics:
Application:
Typical Properties
| Properties | Test Method | Unit | R-1400M | ||
| Uncured | Appearance | Visual | A | White | |
| B | |||||
| Viscosity, after stirred at 23°C | GB/T 2794-1995 | mPa.s | 7×104 | ||
| Mixing ratio | A:B | 100:5 | |||
| Pot life, 25°C | h | 1 | |||
| Cured | Tensile strength | GB/T 528-2009 | MPa | 2.0 | |
| Elongation at break | GB/T 528-2009 | % | 300 | ||
| Tear strength | GB/T 529-2008 | kN/m | 8 | ||
| Hardness, Shore A | GB/T 531-1999 | 30-40 | |||
| Linear shrinkage | % | 0.5 | |||
| Coefficient of thermal expansion | 1/℃ | ||||
These figures are only intended as a guide and should not be used
in preparing specifications.
How to use
1. Weight: According to weight ratio to take rubber base and curing agent. The amount of curing agent will decide pot life longer or shorter, and the final performance of the vulcanizate will also correspondingly change.
2. Mixing: Fully mix two components, pay attention to scratch bottom and wall of container.
3. Deaeration:The mixture together with its container should be placed in vacuum
degassing tank to be degassed in order to guarantee no air bubbles
in the curing rubber. The mixture surface location will rise to 3~4
times higher than original and automatically break bubbles to
collapse.
Please hold vacuum status more 4~6 minutes, then release.
4. Pouring: Pour the mixed rubber by manual or mechanical operation. And it is better to do vacuum degassing again after it.
5. Curing: The curing time is 24hours at 25℃. Additional vulcanization of other 1 hour at 100℃ and 1 hour at 200℃ is needed before use.
Packing, Storage & Shipping
Rubber base is supplied in 20kg plastic drum, net weight. The curing agent separate used plastic bottle or drum.
Please store the product in cool and dry place avoiding contact
with acid, alkali, metal organic salt etc. The rubber base and
the curing agent have a shelf life of 6 months at least if stored
in the sealed original container.
There is no shipping limitation.
Attention
The data presented in this leaflet are in accordance with the
present state of our knowledge, but do not absolve the user from
carefully checking all supplies immediately on receipt. We reserve
the right to alter product constants within the scope of technical
progress or new developments.
The recommendations made in this leaflet should be checked by
preliminary trials because of conditions during processing over
which we have no control, especially where other companies’ raw
materials are also being used. The recommendations do not absolve
the user from the obligation of investigating the possibility of
infringement of third parties’ right and, if necessary, clarifying
the position, recommendations for
use do not constitute a warranty, either express or implied, of the fitness or suitability of the products for a particular purpose.
