Polyol fatty acid ester/phenyl/polyether co-modified silicone oil, preparation method and special low-silicon oil agent for carbon fibers
A technology of fatty acid ester and phenyl silicone oil, which is applied in the field of special low-silicone oil agent for carbon fiber, preparation, and polyol fatty acid ester/phenyl/polyether co-modified silicone oil. Problems such as uniform adhesion and affecting the overall performance of carbon fiber
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Embodiment 1
[0033] In a 500mL three-necked flask with a thermometer and mechanical stirring, add 59.64g octaphenylcyclotetrasiloxane, 117.16g octamethylcyclotetrasiloxane and 23.65g octamethyltrisiloxane, 20mL dry toluene, Then add 1.00g of potassium hydroxide alkali gel and 9.00g of tetramethylammonium hydroxide alkali gel as a catalyst, raise the temperature to 110°C under the protection of nitrogen, stir and react for 10h, after the reaction is completed, remove the catalyst by washing with water, and heat the organic phase to At 140°C, the solvent and low boilers were distilled off under reduced pressure to obtain a colorless and transparent phenyl silicone oil with a yield of 95%.
Embodiment 2
[0035] In a 250mL three-necked flask with a thermometer and mechanical stirring, add 50.00g of phenyl-modified silicone oil, 20.00mL of toluene, 2.40g of acid clay, 2.40g of high hydrogen-containing silicone oil (the hydrogen content is 1.67%) synthesized in Example 1 , viscosity is 300mPa·s), N 2 Under protection, the temperature was raised to 100°C, the reaction was stirred for 10 h, the catalyst was removed by filtration, and the solvent and low boilers were distilled off under reduced pressure to obtain a colorless, transparent and viscous phenyl hydrogen-containing silicone oil with a yield of 95%.
Embodiment 3
[0037] In a 250mL three-necked flask equipped with a thermometer, mechanical stirring and a water separator, add 55.90g of n-octanoic acid, 30g of trimethylolpropane monoallyl ether, 30mL of toluene, 1g of p-toluenesulfonic acid, and 0.7g of inhibitor BHT, heated to 110°C for dehydration reaction for 6 hours, stopped heating, cooled to room temperature, washed with water to remove the catalyst, and distilled off the solvent under reduced pressure to obtain light yellow trimethylolpropane monoallyl ether dicaprylate with a yield of 94.5 %.
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