Silicone oil has a wide range of uses and powerful functions, which are used in the textile industry and daily chemical products.Many people may not know about silicone oil, or the understanding of silicone oil is only limited to whether the shampoo contains silicone oil.Today, Xinjia Xiaobian will take you to understand the cause of methylsilicone oil odor and removal methods.

    Methylsilicone oil is one of the earliest, most widely used and most commonly used organic silicon polymers to be commercialized.There are two main production methods of methyl silicone oil: acid balance method and alkali balance method.Acid balance method is suitable for the production of low viscosity silicone oil with viscosity below 500mm2/s. This method generally uses concentrated sulfuric acid as catalyst, reacts at 50~60℃, and then washes to remove acid, remove low boiling content, add activated carbon to decolorize, and transition the finished product;The alkali balance method is suitable for the production of medium and high viscosity silicone oil with viscosity of more than 100mm2/s.

    In the production of methyl silicone oil, the raw material DMC(dimethyl mixed ring) components at different temperatures to achieve the best activation state, respectively ring opening polymerization, improve the conversion rate, so as to greatly improve the production efficiency.

    After the ring-opening polymerization reaction is completed, the catalyst (CH3)4NOH is difficult to fully decompose in the process of breaking medium.And a small amount of ammonia after decomposition is mixed in the system, resulting in a peculiar smell of silicone oil.The system is removed after cooling to below 140℃, through the method of dry air bubbling, increase the pressure of the gas phase of the system, so as to achieve the purpose of discharging pungency odor.

    The methyl silicone oil with colorless, odorless and qualified indexes can be obtained by programmed temperature control between 90 ℃ and 120℃ and then cooled to 140 ℃ by drying air buboning. The average conversion rate is increased from 65% to more than 80%.The indicators of qualified silicone oil is suitable for use of silicone oil, of course, colorless, no odor is also a reference standard to judge whether silicone oil is qualified.