Scope of application: candles mold silicone candle silicone liquid silicone hand candle silicone art candle mold silicone
Operation method of wax mould glue:
(1) deal with the die type
The original model or want to copy product first to deal with, if you want to copy product or mold without grinding or polishing, model or product is not enough light slid or perfect, make product reach requirements with silica gel.
(2) the weight ratio should be accurate
A group of silica gel, group B curing agent, curing agent generally add 2%-3 %. Example: for example, 100g of silica gel needs 2 g of curing agent, and the curing agent should be added to the silica gel. If you use a measuring cup, check that the measuring cup is clean.
According to the local temperature, the curing agent can be added to the ratio of 25 degrees. If the local temperature is around 10 degrees, the curing agent will add up to 5%. If the local temperature is around -5 degrees, the curing agent will not react with the silica gel and will not solidify. When the local temperature is 38-45 degrees, the curing agent is 1%.
Note: the amount of curing agent should not be less than 1.5%
(3) the silica gel and curing agent are stirred evenly
Mold silicone appearance is fluid fluid, A group is silica gel, B component is curing agent. Example: take 100 grams of silica gel, add 2 grams of curing agent (note: silicone and curing agent must stir well, if there is no uniform mixing, the mould will be a piece of has solidified, a no cure, silica gel can appear uneven drying curing condition will affect the service life of the die and the silicone mold number, and even cause mold scrapped.
(4) vacuum exhaust foaming treatment
Silicone and curing agent after mixing evenly, vacuum exhaust bubble link, vacuumizing time shoulds not be too long, under normal circumstances, not more than ten minutes, vacuum time is too long, the silicone curing immediately, the crosslinking, make the silicone piece by piece, cannot besmear to brush or infusions, thus wasting the silica gel, can only put silica gel in the trash, to take silica gel to do again.
(5) injection molding
Slowly pour out the bubbles of the silica gel from one position into the frame. Until it covers the entire module. Place in flat, at room temperature for 1-2 hours, surface not sticky. It is recommended to leave the die after 24 hours.
In the process of using silicone, it is inevitable that a large amount of air will be added to the air as the curing agent is poured and stirred. But after taking the following measures, the bubble will be greatly reduced.
Ways to reduce bubbles:
1 reduce the proportion of curing agent and prolong curing time. As the curing time becomes longer, the bubbles will automatically overflow, greatly reducing.
Stir in one direction to reduce air bubble entry.
When making molds, apply a thin layer of silicone to the mother mould. When the bubbles disappear, apply the remaining silica gel. In this way, there is no bubble in the contact surface of the mother mould. It is very smooth.
4. Use a vacuum machine, pour the silica gel, put in the vacuum machine, and smoke the bubble.
In summary, reducing the production of bubbles should extend the curing time, the silica gel layer should not be too thick, one direction mixed curing agent and silica gel.
Curing time:
The factors influencing the curing time of silica gel include the proportion of curing agent, working temperature and working humidity. The higher the proportion, the higher the temperature, the higher the humidity, the faster the solidification.
