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    • 61. 发明专利
    • Lead glass composition
    • 铅玻璃组合物
    • JPS5782140A
    • 1982-05-22
    • JP15557580
    • 1980-11-05
    • Nippon Sheet Glass Co Ltd
    • NAKAGUCHI KUNIOKUME MAKOTO
    • C03C3/102C03C3/108
    • C03C3/102
    • PURPOSE: A lead glass composition, containing oxides, e.g. SiO
      2 , Al
      2 O
      3 , B
      2 O
      3 , etc. in a given proportion, and particularly a large amount of PbO, and having a temperature viscosity curve with a relatively sharp slope suitable for the blow molding by a machine.
      CONSTITUTION: A lead glass composition formed from 50W60wt% SiO
      2 , 0W3wt% Al
      2 O
      3 , 0W8wt% B
      2 O
      3 , 0W3wt% ZrO
      2 , 0W8wt% CaO, 0W3wt% Li
      2 O, 0W15wt% Na
      2 O, 0W15wt% K
      2 O and 20W30wt% PbO. In this composition, the following amounts are essential conditions: 55W65wt% (SiO
      2 +Al
      2 O
      3 +B
      2 O
      3 +ZrO
      2 ), 5W 10wt% (B
      2 O
      3 +CaO) and 9W16wt% (Li
      2 O+Na
      2 O+K
      2 O). The lead glass composition has a temperaure viscosity curve with a relatively sharp slope in spite of PbO as much as 20W30wt% contained therein. The glass viscosity range favorable for molding glass by either one of the hand blowing and mechanical blowing is almost constant and 10
      4 W10
      7.6 poises.
      COPYRIGHT: (C)1982,JPO&Japio
    • 目的:含铅氧化物的铅玻璃组合物。 SiO 2,Al 2 O 3,B 2 O 3等,特别是大量的PbO,并且具有适用于机器吹塑成型的相对尖锐的斜率的温度粘度曲线。 构成:由50-60重量%SiO 2,0-3重量%Al 2 O 3,0-8重量%B 2 O 3,0-3重量%ZrO 2,0-8重量%CaO,0-3重量%Li 2 O,0-15重量%Na 2 O, 0-15重量%K2O和20-30重量%PbO。 在该组合物中,以下量是必须的条件:55-65wt%(SiO 2 + Al 2 O 3 + B 2 O 3 + ZrO 2),5-10wt%(B 2 O 3 + CaO)和9-16wt%(Li 2 O + Na 2 O + K 2 O)。 铅玻璃组合物的温度粘度曲线尽管PbO含量高达20-30wt%,但仍具有较高的斜率。 通过手吹和机械吹扫中的任一种对玻璃成型有利的玻璃粘度范围几乎是恒定的,并且10 -4 -10 -6泊。