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
modelSilicone Rubber,Silicone rubber
payment methodT/T, L/C, Westem Union
update timeTue, 05 Nov 2013 13:16:01 GMT
Tensile Strength strong
Curing Agent 5%for free charged
Use For Molding
Certificated RoHS, Reach, MSDS,SGS.ISO9001:2008
Viscosity low
Appearance Fluid
Classification Chemical Auxiliary Agent
anti-scar -50-180℃
Linear shrinkage rate low
Min Order200 kilogram
The operating method of simple silicone mold
The simple silicone rubber mold consists of two-component flowing liquid, the component A is silicone rubber, and the component B is curing agent. Mix the silicone rubber and the curing agent evenly, for example, take silicon rubber of 100g and add curing agent of 2g. (Notes: the silicone rubber and the curing agent must be mixed evenly, otherwise the mold will appear uncomplete curing phenomenon. The drying and uneven curing parts will influence the service life and molding times of the silicone rubber mold, and even causing mold wasting.)
Deairring and air bubble eliminating handling of simple silicon rubber mold:
After the silicone rubber and the curing agent are mixed evenly, then take it to deair and eliminate air bubbles. The deairring process should not last too long and not exceed 10 minutes under the normal circumstances. If the deairing lasts too long, the silicone rubber will be cured at once after crosslinking reaction,thus, it is unable to brushing or pouring. In this case, the silicone rubber is wasted, the operation shall be restarted.
Brushing or pouring process fo simple silicon rubber mold:
put the deairred silicone rubber onto a product in a mode of brushing or pouring. (Release agent or insulating agent shall be applied on the product or model to be molded before pouring the silicone rubber.) Then, brush the silicone rubber onto the product evenly. 30 minutes later, apply a layer of glass fiber cloth to reinforce the tear and tensile strength of the silicone rubber. Repeatedly, brush another layer of silicone rubber and another layer of glass fiber cloth, it will be done after two times of brushing. In this case, the service life and the molding times of the silicone rubber mold are relatively improved much, the cost is saved and the efficiency is improved as well.
The mixing ratio and reactions of the curing agent and the silicone rubber are listed as follows:
1. Adding curing agent 1%, the silicone can still be operated within 2.5 hours and can be demoulded after 6-8 hours.
2. Adding curing agent 2%, the silicone can still be operated within 50 minutes to 1 hour and can be demoulded after 2-3 hours.
3. Adding curing agent 3%, the silicone can still be operated within 28 - 30 minutes and can be demoulded after 1.5-2 hours.
4. Adding curing agent 4%, the silicone can still be operated within 10 - 15 minutes and can be demoulded after 1 -1.5 hours.
(Note: the amount of the curing agent should not exceed 5 %, otherwise the curing time is too fast and the mold can not be used normally, thus, the silicone rubber is wasted. )
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