Encyclopedia of Glass Science, Technology, History, and Culture. Группа авторов. Читать онлайн. Newlib. NEWLIB.NET

Автор: Группа авторов
Издательство: John Wiley & Sons Limited
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Жанр произведения: Техническая литература
Год издания: 0
isbn: 9781118799499
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history of performance of conventional E‐glass and a desire to minimize any risk, however small, which might be incurred by what was perceived as a significant material change.

      As a consequence of these developments, commercial E‐glass fibers today fall into two major categories: low or zero B2O3 levels for general reinforcements, and higher B2O3 levels (>5%) for electronic and aerospace applications. The distinction between these categories is clearly defined in ASTM D578 [2].

      2.1.3 C‐Glass

Bar chart depicts the history of commercial continuous fiberglass development and standard nomenclature/classification based on their key properties used in commercial applications.
Fiberglass SiO2 (wt %) Al2O3 (wt %) MgO (wt %) CaO (wt %) SrO (wt %) BaO (wt %) B2O3 (wt %) R2O (wt %) F2 (wt %) ZrO2 (wt %)
E including E‐CR 52–62 12–16 0–5 16–25 0–10 0–2 0–2
C (China)a C (Europe) 67.0 53–65 6.2 3.8–16 4.2 2.4–3.8 9.5 14–16 0 3–6 127–9 <1 0.3
Ab 72–72.5 1–1.5 2.5–3.8 9–10 0 0 0 13–14 0 0
ARc 61–71 0–3 <5 0 <18 16–22
D 72–76 0–1 <1 20–25 <4
D (derivative I) 52–60 10–18 0 4–8 20–30 Trace 0–2
D (derivative II) 50–60 10–18 1–6 2–5 1–9 1–5 14–20 <1 0–2
D (derivative III) 60–77 9–15 5–15 0–11 5–13 0–4 0–2
R 58–60 23–26 5–6 9–11 0
R (derivative) 56–65 12–20 6–12 8–16

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