Abstract
Silicone materials have excellent weathering resistance, high and low temperature resistance, anti-yellowing and a series of excellent properties over other materials. In this study vinyl silicone oil as the base polymer, hydrogen silicone oil as a cross-linking agent, vinyl silicone resin and ultraviolet absorber as additives, platinum complex as a catalyst, were used to make ultraviolet absorption of highly transparent silicone rubber. Different structures of silicone resin with vinyl group have different effects on the curing speed of the products. The silicone resin with MM<sup>Vi</sup>Q can help achieve rapid curing speed. Due to polarity difference for polysiloxane system and ultraviolet absorber, when necessary a suitable organic solvent may be introduced to increase the compatibility of the ultraviolet absorber with the silicone composition to prepare transparent products. Considering that the addition of organic solvents may have effects such as volatiles and properties, the amount of solvent introduced should be as low as possible. In addition, regarding the amount of the ultraviolet absorber added, too little ultraviolet absorber may not achieve a satisfactory ultraviolet absorption effect, but too much would lead to an increase in the amount of solvent introduced. Different ultraviolet absorber could induce different ultraviolet absorption effect and aging resistance.
Highlights
With the rapid development of polymer technology and related research, more and more optical components and their components contain or consist of polymer materials
The following raw materials were from Elkem silicones: vinyl silicone resin A1 (MMViQ, vinyl content of about 0.041mol/100g), vinyl silicone resin A2
The vinyl silicone resin, the vinyl terminated silicone oil, inhibitor and the platinum complex catalyst were stirred at 2 000 r/min for 3 times with a high-speed stirrer and mixed uniformly for 20 second each time
Summary
With the rapid development of polymer technology and related research, more and more optical components and their components contain or consist of polymer materials. Polysiloxane has drawn extensive attention due to its excellent resistance to high and low temperature, weather resistance, ultraviolet resistance, and aging resistance, and has been made into a variety of optical sheets, substrates or optical adhesives Polymer materials such as polymethyl methacrylate and polyvinyl chloride have high light transmittance and are easy to process. A International Journal of Materials Science and Applications 2018; 7(4): 142-146 polysiloxane-based optical material is used in place of conventional polymethyl acrylate to avoid problems such as poor aging resistance, where the silicone material is crosslinked by exposing the uncured polysiloxane composition to an electron beam This method requires special equipment and high cost [6]. The influence of silicone resin on the vulcanization of silicone rubber, the influence of ultraviolet absorber on the light transmittance, ultraviolet absorption effect and aging resistance of silicone rubber were discussed
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