Easy-to-clean weather-proof silica gel and preparation method thereof
A clean weather-resistant and silica gel technology, applied in the field of easy-clean weather-resistant silica gel and its preparation, can solve the problems of poor weather resistance of silica gel, poor anti-aging performance, deformation of rubber products, etc., to improve poor weather resistance, good anti-aging performance and small molecular weight. Effect
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Embodiment 1
[0033] The preparation method of easy-to-clean weather-resistant silica gel and the preparation of the toilet sticker include the following steps:
[0034] 1) Preparation of modified nano silica
[0035] Nano-silica (particle size 1-50nm) is treated with hydrophobic and oleophobic, organic solvent-friendly and grafted. Wherein hydrophobic treatment, pro-organosolvent treatment and grafting treatment are respectively as follows:
[0036] a. Fluorosilane treatment: soak nano-silica in hydrophobic fluorosiloxane treatment, wherein the hydrophobic fluorosilane can be tridecafluorooctyl triethoxy fluorosilane or perfluorodecyl triethoxy Fluorofluorosilane, etc., in this embodiment, tridecafluorooctyltriethoxyfluorosilane is used, and the storage time is 45min;
[0037] b, siloxane treatment: immerse the nano-silica in the siloxane of the organophilic solvent, wherein the siloxane of the organophilic solvent can be polydimethylsiloxane, heptadecyltriethoxy Base silane and γ-amino...
Embodiment 2-4
[0046] The difference from Example 1 is that the modified nano-silica is modified in a different way. According to the modification method in Table 1, the modification method is adjusted appropriately, and the preparation method in Example 1 is repeated. The performance test results of the prepared silicone toilet sticker are shown in Table 2.
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