Flame-retardant sheets and flame-retardant composite parts
A flame retardant composite and sheet technology, which is applied in railway car body parts, lighting device parts, film/sheet adhesives, etc. Insufficient flame retardancy, etc., to achieve the effects of excellent flame retardancy, improved strength, and high flame retardancy
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[0208] Now, the present invention will be described more specifically by way of examples and comparative examples. However, the present invention is by no means limited to these. It should be noted that in the following description, "parts" and "%" are by weight unless otherwise specified.
Synthetic example 1
[0210] 50 g of a colloidal silica solution (trade name: SNOWTEX OS, manufactured by Nissan Chemical Industries, Ltd., solid content concentration: 20%) with an average particle diameter of 8 nm to 11 nm and 84 g of 2-propanol were charged into a mixer, reflux Condenser and nitrogen are introduced into the container of the tube. Concentrated nitric acid was added to adjust the acidity (pH) of the resulting liquid to be in the range of 2-4. Next, the temperature of the mixture was raised to 70° C., and then, using a dropping funnel, 25 g of a silsesquioxane compound having a reactive methoxysilyl group at a molecular terminal ( Trade name: X-40-9225, manufactured by Shin-Etsu Chemical Co., Ltd., methoxyl content: 24%) and a liquid prepared, was added dropwise to the mixture over 1.25 hours to carry out the silsesquioxane compound Reaction with the surface of colloidal silica particles.
[0211] Next, a liquid prepared by dissolving 75 g of a polysiloxane compound derived from ...
Synthetic example 2
[0213] 50 g of a colloidal silica solution (trade name: SNOWTEX OS, manufactured by Nissan Chemical Industries, Ltd., solid content concentration: 20%) with an average particle diameter of 8 nm to 11 nm and 84 g of 2-propanol were charged into a mixer, reflux Condenser and nitrogen are introduced into the container of the tube. Concentrated nitric acid was added to adjust the acidity (pH) of the resulting liquid to be in the range of 2-4. Next, the temperature of the mixture was raised to 70° C., and then, using a dropping funnel, 10 g of a silsesquioxane compound having a reactive methoxysilyl group at a molecular terminal ( Trade name: X-40-9225, manufactured by Shin-Etsu Chemical Co., Ltd., methoxyl content: 24%) and prepared liquid, was added dropwise to the mixture over 0.5 hours to carry out the silsesquioxane compound Reaction with the surface of colloidal silica particles.
[0214]Next, a liquid prepared by dissolving 90 g of a polysiloxane compound derived from a tr...
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