Hand how to effectively reduce the bubbles do gra? Rigaproportion of silica gel silicone maximum of how much?-Iota

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Service > Hand how to effectively reduce the bubbles do gra? Rigaproportion of silica gel silicone maximum of how much?

Hand how to effectively reduce the bubbles do gra? Rigaproportion of silica gel silicone maximum of how much?

Silicon rubber mould is jointly used by the gum base and curing agent, usually use ratio is: base gum: curing agent =100:2~2.5. To obtain the base glue 100 grams add 2 grams (or 2.5 grams) of curing agent, stirring evenly in two minutes; if there is a vacuum pump can pump a minute vacuum; then deposited in the hand (mother) can be deposited, required to complete the mold work in 5 minutes; an hour after curing can release.

According to the need to be a few layer thickened to fixed model again apply, or by injection mold can method. Sometimes according to the parting division habits can add 5% silicone oil dilution, to increase liquidity in operation, easy to remove air bubbles, with comprehensive performance guarantee mould.

Not too much general curing agent, to ensure enough time to stirring, vacuum pumping, compress mould. The use of dose related with temperature, the temperature is high to a bit less, if the temperature is below 25 degrees according to the ratio of about 100:2 is preferred, 30 degrees according to the specific situation of between 100:1.5 to 100:1.8 better. The specific situation according to the division of the habits and mold. The ratio of silicone oil to join generally below 100:5, can not be too much, otherwise it will affect the overall performance of the mould.

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