Why does the mold produce phenomena that are not resistant to acid, alkali, and aging

During the process of making silicone molds, we recommend that customers do not add any silicone oil. If necessary, clear liquid silicone rubber the maximum amount of silicone oil added should not exceed 5% to 10%. Because excessive addition of silicone oil clear platinum silicone can damage the molecular weight of silicone, resulting in molds that are not resistant to acid, alkali, or aging.