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標題: 絢麗多彩的藝術玻璃瓶【 32 P】 [列印本頁]

作者: 丸の小羽    時間: 2015-4-22 16:09:24     標題: 絢麗多彩的藝術玻璃瓶【 32 P】




玻璃是一種呈玻璃態的無定形體[1],熔解的玻璃經過迅速冷卻(過冷)而成形,

雖為固態,但各分子因沒有足夠時間形成晶體,仍凍結在液態的分子排布狀態。

玻璃一般而言是透明、脆性、不透氣、並具一定硬度的物料。

玻璃在日常環境中呈化學惰性,亦不會與生物起作用。

玻璃一般不溶於酸(例外:氫氟酸與玻璃反應生成SiF 4,從而導致玻璃的腐蝕);

但溶於強鹼,例如氫氧化銫。最常見的玻璃是鈉鈣玻璃,

包括75%的二氧化矽(SiO 2)、由碳酸鈉中製備的氧化鈉(Na 2 O)

以及氧化鈣(CaO)及其他添加物。

因為玻璃透明的特性,因此有許多不同的應用,其中一個主要應用是作建築中的透光材料,

一般是在牆上窗戶的開口安裝小片的玻璃(玻璃窗),但二十世紀的許多大樓會用玻璃為其側面的包覆,

即玻璃幕牆大樓。玻璃可以反射及折射光線,而且藉由切割或是拋光,可以提昇其反射或折射的能力,

因此可以作透鏡、三棱鏡、其至高速傳輸用的光纖。玻璃中若加入金屬鹽類,其顏色會改變,

玻璃本身也可以上色,因此可以用玻璃製作藝術品,包括著名的花窗玻璃。

玻璃雖然容易脆斷,但非常的耐用,在早期的文化遺址中都發現許多玻璃的碎片。

因為玻璃可以形成或模製成任何的形狀,而且本身是無菌的,因此常用來作為容器,

包括碗、花瓶、瓶子、玻璃杯。堅硬的玻璃也常作為紙鎮、彈珠等。

若製成玻璃纖維或是玻璃棉,可以作為隔熱的材料。若將玻璃嵌入有機塑料中,

是複合玻璃纖維中的重要的加固材料。








































































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