200 - 40,000 kilogram
40,001 - 999,999 kilogram
group nameRTV-2 silicone rubber for molds making
Min Order200 kilogram
brand nameHong Ye silicone rubber
modelHY-638
payment methodT/T, L/C, Westem Union
update timeTue, 05 Nov 2013 12:24:53 GMT
Appearance liquid
Purity 100%
Color white/ off-white/ blue/ red/ yellow
Catalyst free of charged
Molding method Pouring , brushing
Package vacuumed packing
Shelf life 12 months
MOQ 100KGS
Sample Free
Certificate SGS, RoHS, MSDS, FDA, ISO, REACH, UL
Min Order200 kilogram
Features of mould making material -- silicone rubber
Mould making material -- silicone rubber Series
RTV-2 Room temperature silicone rubber
Model: HY-638
Usage: Mould making material -- silicone rubber for poly resin, unsaturated resin, plaster, gypsums crafts, , soap, statuary, concrete , cement casting molds making,etc.
Model | HY-638 |
Appearance | white |
Mixing proportion of curing agent (%) | 3~4% |
Operating time (mins 25 0C ) | 30-50 |
Curing time(hours 25 0C) | 3-6 |
Hardness (A°) | 33~37 |
Density ( g/cm 3 ) | 1.08 |
Viscosity (mPas -25 0C) | 32000~38000 |
Tensile-strength(kgf /cm2 ) | ≥42 |
Tear-strength (kgf /cm ) | ≥23 |
Elongation-break(%) | ≥ 430 |
Retractility(%) | ≤0.25 |
Use instruction of mould making material -- silicone rubber
Mould making material -- silicone rubber (silicone) and silicone are generally named as two-part room temperature sulfurated silicone rubber, which features an exceptional fluidity and good operability.When mixed with 5% curing agent, they can still be operated within 50 minutes,but will be formed after 4-5 hours.With resistance to deformation, high temperature, acid and alkali, and expansion, silicon flexible molds are used for mold duplication and delicate mold making for poli crafts, resin crafts lighting and candle crafts.
Mould making material -- silicone rubber is a white or red flowable liquid with a hardness of 33—35A° when cured. If large products and therefore multiple-piece molds are needed by customers, silicone rubber with higher hardness will be required for the molds. Conversely, soft silicon is indispensable for molds with complicated pattern and delicate details. The amount of curing agent admixture depends on the actual need of customers. More will be added for speedy drying and fast release and less when otherwise.
Technical guidings of mould making material -- silicone rubber :
1. Stir the silicone base (Part A) well beofre use (except when depending on machine ).
2. Shake the catalyst container (Part B) well before use.
3. This is a 100 Part A to 5 Part B mixing ratio by weight.Weigh the desire amount of base into a clean mixing container.
4. Weight the proper amount of catalyst into the container. Mix the base and catalyst together by stirring with a stick until a uniform color is obtained. Scrape the container walls and bottom well to insure a thorough mix.
5. Though it is often unnecessary to deair the material due to its low viscosity some may choose to do so. If so,place the container into a vacuum chamber and evacuate the entrapped air from the mixture using a vacuum pump capable of achieving 29 inches of mercury vacuum.The mixture will rise, crest and then collapse in the contanier. Interruption(bumping) of the vacuum may be necessary to prevent overflowing the container. Keep the mixture under full vacuum for 2-3 minutes.
6. Bleed air slowly into the vacuum chamber. When the chamber is at atmospheric equiplibrium,remove the cover plate and take out the container.
7. Pour the deaired material slowly in a steady stream from one end of the mould so that the material flows evenly over the pattern. This should minimize emtrapment of air bubbles under the flowing material. A”ready”mold may be poured firstly over the pattern, which will also help reduce the possibility of entrapping air on the pattern and in the cured rubber.A mold release agent may be applied on the pattern first to improve release.
8. Allow the rubber to cure for 2-4 hours at 24C before removing the cured rubber mold from the pattern. Heat acceleration not recommended with this product.
9. For best results, allow the mold to air cure an additional 24 hours before using it in production.
First aid of mould making material -- silicone rubber :
Inhalation: Remove source(s) of contamination and move victim to fresh air. Contact physician immediately.
Eye Contact: Flush eyes with plenty of water. If irritation persists, seek medical attention.
Skin Contact: In case of skin contact, wash thoroughly with soap and water; remove contaminated clothing and launder before reuse; seek medical attention if rash develops.
Ingestion: Do not indeuce vomiting unless instructed by a physician.Contact physicain immediatedly.
After first aid, get appropriate in-plant,paramedic,or community medical support.
More details of mould making material -- silicone rubber, pls feel free to contact Ms Taylor:
Tel:086-755-89212380
Mob:086-18938867522
Skype: taylordl828
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