Food preservation[edit]
World War I poster suggesting the use of waterglass to preserve eggs (lower right).Sodium silicate was also used as an egg preservation agent through the early 20th century with large success. When fresh eggs are immersed in it, bacteria which cause the eggs to spoil are kept out and water is kept in. Eggs can be kept fresh using this method for up to five months. When boiling eggs preserved this way, it is well advised to pin-prick the egg to allow steam to escape because the shell is no longer porous.[11]
Metal repair[edit]Sodium silicate is used, along with magnesium silicate, in muffler repair and fitting paste. When dissolved in water, both sodium silicate and magnesium silicate form a thick paste that is easy to apply. When the exhaust system of an internal combustion engine heats up to its operating temperature, the heat drives out all of the excess water from the paste. The silicate compounds that are left over have glass-like properties, making a temporary, brittle repair.
Automotive repair[edit]Sodium silicate is also used currently as an exhaust system joint and crack sealer for repairing mufflers, resonators, tailpipes, and other exhaust components, with and without fiberglass reinforcing tapes. In this application, the sodium silicate (60-70%) is typically mixed with kaolin (40-30%), an aluminium silicate mineral, to make the sodium silicate "glued" joint opaque. The sodium silicate, however, is the high-temperature adhesive; the kaolin serves simply as a compatible high-temperature coloring agent. Some of these repair compounds also contain glass fibres to enhance their gap-filling abilities and reduce brittleness.
Sodium silicate can be used to fill gaps within the head gasket. Commonly used on aluminum alloy cylinder heads, which are sensitive to thermally induced surface deflection, and can be caused by many things including head-bolt stretching, deficient coolant delivery, high cylinder head pressure, overheating, etc.
"Liquid glass" (sodium silicate) is added to the system through the radiator, and allowed to circulate. Sodium silicate is suspended in the coolant until it reaches the cylinder head. At 100–105°C, sodium silicate loses water molecules to form a glass seal with a remelt temperature above 810°C.
[แก้ไข] การถนอมอาหาร โปสเตอร์โลกสงครามที่แนะนำการใช้ waterglass การรักษาไข่ (ล่างขวา) ยังมีใช้โซเดียมเป็นตัวแทนเก็บรักษาไข่ผ่านศตวรรษต้นใหญ่ดี เมื่อไข่สดจะแช่อยู่ในนั้น เก็บแบคทีเรียซึ่งทำให้ไข่เสียออก และน้ำจะถูกเก็บไว้ใน ไข่สามารถเก็บไว้ใช้วิธีนี้ห้าเดือนสด เมื่อต้มไข่รักษาด้วยวิธีนี้ จะดีนานไป pin-พริกไข่ให้อบไอน้ำเพื่อหลบหนีเนื่องจากไม่มี shell porous [11]ซ่อมแซมโลหะ [แก้ไข] โซเดียมไว้ ด้วยซิลิเกแมกนีเซียม muffler ซ่อมและวางอุปกรณ์ เมื่อละลายในน้ำ โซเดียมและแมกนีเซียมซิลิเกแบบวางหนาที่ง่ายต่อการใช้ เมื่อระบบไอเสียของเครื่องยนต์สันดาปภายใน heats ขึ้นอุณหภูมิการปฏิบัติงาน ความร้อนขับออกทั้งหมดของน้ำส่วนเกินจากวาง สารประกอบซิลิเกที่ถูกเก็บไว้เหมือนกระจกคุณสมบัติ ทำตำแหน่ง เปราะซ่อมแซมได้Automotive repair[edit]Sodium silicate is also used currently as an exhaust system joint and crack sealer for repairing mufflers, resonators, tailpipes, and other exhaust components, with and without fiberglass reinforcing tapes. In this application, the sodium silicate (60-70%) is typically mixed with kaolin (40-30%), an aluminium silicate mineral, to make the sodium silicate "glued" joint opaque. The sodium silicate, however, is the high-temperature adhesive; the kaolin serves simply as a compatible high-temperature coloring agent. Some of these repair compounds also contain glass fibres to enhance their gap-filling abilities and reduce brittleness.Sodium silicate can be used to fill gaps within the head gasket. Commonly used on aluminum alloy cylinder heads, which are sensitive to thermally induced surface deflection, and can be caused by many things including head-bolt stretching, deficient coolant delivery, high cylinder head pressure, overheating, etc."Liquid glass" (sodium silicate) is added to the system through the radiator, and allowed to circulate. Sodium silicate is suspended in the coolant until it reaches the cylinder head. At 100–105°C, sodium silicate loses water molecules to form a glass seal with a remelt temperature above 810°C.
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