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MATERIALS FOR PRODUCING TRANSPARENT HEAT PROTECTION ELEMENTS AND LIGHT PROTECTION ELEMENTS PRODUCED USING SUCH MATERIALS, AND METHOD FOR THE PRODUCTION THEREOF
MATERIALS FOR PRODUCING TRANSPARENT HEAT PROTECTION ELEMENTS AND LIGHT PROTECTION ELEMENTS PRODUCED USING SUCH MATERIALS, AND METHOD FOR THE PRODUCTION THEREOF
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机译:用于生产透明热防护元件和使用这种材料生产的轻质防护元件的材料及其制造方法
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摘要
Heat protection element comprises at least a carrier element and a protective layer, which is a water-containing silicate composition obtained from alkali metal oxide and silicon dioxide (SiO 2), and contains at least one alkylsiloxane. Independent claims are included for: (1) a silicon dioxide containing aqueous dispersion, where the silicon dioxide is precipitated silicic acid and the dispersion is stabilized by the addition of polyol and alkali hydroxide, preferably potassium hydroxide; (2) a process for producing protective layer, comprising, mixing glycerin, potassium hydroxide (KOH) stabilized silicic acid and KOH solution, in an amount corresponding to 70-75, preferably 73.45 wt.% of dispersion and 25-30, preferably 26.55 wt.% of KOH solution (50 wt.%); and (3) a process for preparing a dispersion comprising fumed SiO 2and/or precipitated silica, where for the reduction of SiO 2particles, a nano mill is used during and/or after dispersing process.
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