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Hatari
Unsaturated Polyester Resin (Fibreglass)
Carleton Ellis, one of the most prolific American inventors of his time, found that a polyester made with maleic acid - which leaves a reactive double bond in every repeat - could be dissolved in a liquid monomer such as styrene and then cured with a catalyst into a hard solid, with no pressure and no by-product. That made it possible to soak glass fibre in a liquid and let it harden in shape: fibreglass boats, car bodies and radomes followed within a decade.
**US 2,255,313**, "Ethylenic-alpha-beta synthetic resins and process of making same", Ellis, filed 6. August 1937, granted 9. September 1941: a maleic-polyhydric-alcohol ester, "a polymerizable alpha-substituted ethylene body and a curing catalyst", with a fibrous filler.
**Hazardous: the resin gives off styrene and the catalyst (MEKP) burns eyes and skin.** Work outdoors or with strong ventilation. You lay up a two-layer fibreglass tray and weigh how much of it is glass.
Kati
3 hours plus overnight cure
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.
IngiaMchoro huu unatengeneza
Blueprint zinazohusiana
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CC0 Umma Wote
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