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E-glass Fibre Strand: Alkali-Free Lime-Alumina-Borosilicate Glass Drawn to Filament
Charlie

Imeundwa na

Charlie

20. Oktoba 2026DE
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E-glass Fibre Strand: Alkali-Free Lime-Alumina-Borosilicate Glass Drawn to Filament

Fibre from ordinary glass carries alkali on its huge surface; it takes up water from the air and slowly destroys itself, and it conducts electricity. Schoenlaub's Owens-Corning glass (US 2,334,961, 1943) has no alkali at all: lime, magnesia, alumina and silica fluxed with boric oxide. It was made to be drawn into fibres for insulation and textiles. It is melted at up to 1420 °C and drawn into continuous filaments on a fast spool. The picture: our diagram.
Juu
2 days

Maagizo

1

Weigh out the batch

The patent's example glass: lime (CaO) 17.5 %, magnesia (MgO) 4.5 %, alumina 14.0 %, silica 54.0 %, boric oxide 10.0 %. Ours: weigh those five oxides in those proportions and mix them. Keep within the patent's limits; small changes make this glass devitrify.

Vifaa kwa hatua hii:

Chokaa haiChokaa hai17.5 parts
Oksidi ya magnesiamuOksidi ya magnesiamu4.5 parts
Unga wa alumina (oksidi ya alumini)Unga wa alumina (oksidi ya alumini)14 parts
Mchanga wa KwatziMchanga wa Kwatzi54 parts
Oksidi ya boroniOksidi ya boroni10 parts

Zana zinazohitajika:

Mizani ya mizani-mbiliMizani ya mizani-mbili
Miwani ya usalamaMiwani ya usalama
2

Melt at no more than 1420 °C

Melt the batch in a glass tank furnace without going above 1420 °C; the patent's day tanks ran on a 24-hour cycle.

Zana zinazohitajika:

Tanuri ya kuyeyusha kiooTanuri ya kuyeyusha kioo
Kipima joto kaliKipima joto kali
Glavu Zinazostahimili JotoGlavu Zinazostahimili Joto
Miwani ya usalamaMiwani ya usalama
3

Feed the platinum bushing

Draw from a platinum-rhodium bushing like Slayter and Thomas's, heated by an adjustable current. The drawing range of this glass is about 2000–2400 °F (1090–1320 °C). A blower below the nozzles sets each filament.

Zana zinazohitajika:

Kisanduku cha Platinamu-RodiKisanduku cha Platinamu-Rodi
Transfoma ya Kushusha VoltejiTransfoma ya Kushusha Volteji
Kipima joto kaliKipima joto kali
Kipuliza hewaKipuliza hewa
Glavu Zinazostahimili JotoGlavu Zinazostahimili Joto
4

Wind on a fast spool

Gather the filaments into a strand and wind it on a spool running as fast as 6,000–10,000 ft per minute (30–50 m/s). Filaments come out about .0001–.0003 in (2.5–7.6 µm) thick. The strand can then be twisted and plied into yarn.

Zana zinazohitajika:

Ngoma ya KukusanyaNgoma ya Kukusanya

Vifaa

5

Zana Zinazohitajika

9

Mchoro huu unatengeneza

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Kishikilia nafasi

Uzi mmoja wa nyuzi za E-glass

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Blueprint zinazohusiana

Blueprint hizi zinashiriki maarifa — mbinu, vifaa au kanuni

Continuous Glass Fibre Strand Drawn from a Platinum Bushing

Continuous Glass Fibre Strand Drawn from a Platinum Bushing

na CharlieDE

Viwandani

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