How to make a simple silicone mold?

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Package: 25kg/drum,200kg/drum
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Port: FOB SHENZHEN
Fob Price: US$5.20-9.50FOB SHENZHEN
Color: white/red
Product: Vehicle Mould
Product Material: Rubber
Shaping Mode: Die Casting
Model Number: silicone 638#
Brand Name: Hong Ye silicone rubber
Place of Origin: Guangdong China (Mainland)

(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. )

4. Adding curing agent 4%, the silicone can still be operated within 10 - 15 minutes and can be demoulded after 1 -1.5 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.

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.

1. Adding curing agent 1%, the silicone can still be operated within 2.5 hours and can be demoulded after 6-8 hours.

The mixing ratio and reactions of the curing agent and the silicone rubber are listed as follows:

Outer mold making process: the general method is as follows: One is to inclose  the mold with plastic board or wooden plates, and fill up the mold frame with gypsum. The other is resin brushing way, that is to brush a layer of resin, and then a layer of glass fiber cloth, repeatedly two or three times is enough, and the outer mold is finished.

Brushing or pouring process: 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.

Deairring and air bubble eliminating handling:  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.

The molding silicone rubber is a 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.)

The operating method of RTV-2 molding silicone rubber

How to make a simple silicon mold?silicon mold for duplicate PU resin products,polyresin,candle,soap,plaster,gypsum,statue mould

  • Color:white/red
  • Product:Vehicle Mould
  • Product Material:Rubber
  • Shaping Mode:Die Casting
  • Model Number:silicone 638#
  • Brand Name:Hong Ye silicone rubber
  • Place of Origin:Guangdong China (Mainland)
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