首先采用硅烷改性剂VTMS来调节二氧化硅的表面润湿性，它能同时赋予二氧化硅纳米粒子硅氢加成的反应活性。然而，仅用VTMS改性二氧化硅不能同时实现Pickering乳化以及水性PDMS涂布液的交联。因此，同时采用硅烷改性剂HMDS和VTMS来共同改性二氧化硅，别采用VTMS、HDMS或VTMS/HDMS混合物作为二氧化硅的改性剂。具体改性过程如下：将5 g气相二氧化硅分散在200 mL的无水乙醇中，将其置于冰浴中，并使用超声波细胞粉碎机超声分散1 h，然后转移至500 mL的四颈烧瓶中。而后将改性剂逐滴加入50 mL的无水乙醇中，搅拌15 min使其醇解，然后滴加到二氧化硅分散液中，滴加氨水溶液调节pH值至8.5，并在65°C和600rpm下机械搅拌20 h。获得的改性二氧化硅在15000 rpm下离心10 min，用乙醇和水冲洗3次以去除游离的改性剂。将部分改性二氧化硅分散液离心并于40°C的真空烘箱中放置3天获得干燥的纳米颗粒。根据报道的方法，将干燥的改性二氧化硅纳米粉末压制成片，以确定其表面润湿性。

Firstly, the surface wettability of silica was adjusted by the silane modifier VTMS, which could simultaneously impart the reactivity of silica nanoparticles to silicon-hydrogenation. However, it is not possible to achieve both Pickering emulsification and crosslinking of aqueous PDMS coating solutions with VTMS modified silica alone. Therefore, the silane modifier HMDS and VTMS are used to co-modify silica at the same time, and VTMS, HDMS or VTMS/HDMS mixtures are not used as silica modifiers. The specific modification process was as follows: 5 g of fumed silica was dispersed in 200 mL of absolute ethanol, placed in an ice bath, and sonicated using an ultrasonic cell grinder for 1 h, and then transferred to a 500 mL four-neck flask. Then, the modifier was added dropwise to 50 mL of absolute ethanol, stirred for 15 min to hydrolyze, and then added dropwise to the silica dispersion, and the aqueous ammonia solution was added dropwise to adjust the pH value to 8.5, and the ammonia aqueous solution was mechanically stirred at 65°C and 600rpm for 20 h. The modified silica obtained was centrifuged at 15,000 rpm for 10 min and rinsed 3 times with ethanol and water to remove the free modifier. The partially modified silica dispersion was centrifuged and placed in a vacuum oven at 40 °C for 3 days to obtain dried nanoparticles. According to the reported method, the dried modified silica nanopowder was pressed into a sheet to determine its surface wettability