How to improve the flame retardancy of silicone |
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| Reading Volume： 【 2564 】 | Time： 【 2018-03-12 】 | |
| For many silicone users, it is necessary to require silicone to have flame retardant properties. For some users with special needs, higher flame retardant properties are required. So how to improve the flame retardancy of silicone? I want to be a flame-retardant type of dealcoholized one-component room temperature glue. It is required to have a good leveling effect, the viscosity is about 20,000, the density is not more than 1.20, and the strength is more than 2MPa. The elongation is greater than 250%. The flame retardant level reaches V-0. I don't know what efficient flame retardant is available. With aluminum hydroxide, the weight gain is too obvious, and with melamine cyanurate (MCA), the thixotropy is too strong. And the flame retardant effect is not ideal. Dealcoholized organic silica gel, the viscosity is about 20,000. The density is not more than 1.2; the tensile strength of the organic silica gel is more than 2Mpa. The elongation is greater than 250%. This alone is more difficult to do. With such a low viscosity, the flame retardant requirements are so high, and the difficulty is relatively large. The performance requirements are not high, the problem is not big. Even for the low viscosity silicone Difficulty, jump out of the conventional flame retardant system, consider the flame retardant mechanism of silicone and then make a selection. (But the density requirement is not greater than 1.2, the requirement is still relatively high, it is recommended to carefully choose the filling material) |
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