A kind of polyol fatty acid ester/phenyl/polyether co-modified silicone oil, preparation method and special low-silicon oil agent for carbon fiber
A technology of fatty acid ester and phenyl silicone oil, which is applied in the fields of carbon fiber, fiber treatment, textiles and papermaking, etc. It can solve the problems of affecting the overall performance of carbon fiber, prone to microscopic phase separation, and deterioration of carbon fiber mechanical properties.
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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, 23.65g octamethyltrisiloxane, 20mL dry toluene, Then add 1.00g potassium hydroxide alkali glue and 9.00g tetramethylammonium hydroxide alkali glue as catalysts, heat up to 110 ℃ under nitrogen protection, stir the reaction for 10h, the reaction is over, wash with water to remove the catalyst, the organic phase is dried, heated to At 140° C., the solvent and low boilers were distilled off under reduced pressure to obtain colorless and transparent phenyl silicone oil with a yield of 95%.
Embodiment 2
[0035] In a 250 mL three-necked flask with a thermometer and mechanical stirring, add 50.00 g of phenyl modified silicone oil synthesized in Example 1, 20.00 mL of toluene, 2.40 g of acid clay, and 2.40 g of high-hydrogen silicone oil (with a hydrogen content of 1.67%). , the viscosity is 300mPa s), N 2 The temperature was raised to 100°C under protection, the reaction was stirred for 10 hours, the catalyst was removed by filtration, and the solvent and low boilers were removed by distillation 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 with a thermometer, mechanical stirring and a water separator, add 55.90g n-octanoic acid, 30g trimethylolpropane monoallyl ether, 30mL toluene, 1g p-toluenesulfonic acid, 0.7g polymerization inhibitor BHT, heated to 110 °C for dehydration reaction for 6 h, stopped heating, cooled to room temperature, washed with water to remove the catalyst, distilled under reduced pressure to remove the solvent, and obtained light yellow trimethylolpropane monoallyl ether dioctanoate with a yield of 94.5 %.
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Abstract
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