Liquid Bakelite: Phenol and Formalin Heated Together, the Oily Layer Kept (Baekeland 1909)

Before Bakelite sets hard it is an oily liquid. Baekeland's patent (US 942,699, 1909): heat about equal volumes of phenol and commercial formaldehyde and the mixture splits into two liquids. The upper one is watery; the lower, oily one is the condensation product, which dissolves in alcohol or acetone and turns hard and infusible when heated further. This liquid was used to coat and bind paper and fibres. Phenol burns and poisons through the skin; formaldehyde vapour is toxic: fume hood, chemical gloves. The picture: our diagram.

Kati

1 day

Maudhui hatari

Blueprint hii ina taratibu za hatari. Ingia na uwashe maudhui ya hatari katika mipangilio ya akaunti yako ili kuona maagizo ya hatua kwa hatua.

Ingia

Mchoro huu unatengeneza

Kishikilia nafasi

Bakelaiti ya kimiminika (bidhaa ya mgandamano wa fenoli na formaldehaidi)

Free

Blueprint zinazohusiana

Blueprint hizi zinashiriki maarifa — mbinu, vifaa au kanuni

Hatari

Making Bakelite — The First Fully Synthetic Plastic That Launched the Age of Polymers

na Charlie

Viwandani

CC0 Umma Wote

Mchoro huu umetolewa chini ya CC0. Uko huru kunakili, kubadilisha, kusambaza, na kutumia kazi hii kwa madhumuni yoyote, bila kuomba ruhusa.

Saidia Mtengenezaji kwa kununua bidhaa kupitia Mchoro wao ambapo wanapata Kamisheni ya Mtengenezaji iliyowekwa na Wachuuzi, au unda marudio mapya ya Mchoro huu na uiunganishe kama kiungo katika Mchoro wako kuchangia mapato.

Majadiliano

(0)

Ingia kujiunga na majadiliano

Inapakia maoni...