Prepregs, process for producing the same and laminates produced

Details Prepregs, process for producing the same and laminates produced Prepregs, process for producing the same and laminates produced

1991-11-29

1994-01-18

Lesmes, George F.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Noninterengaged fiber-containing paper-free web or sheet...

428113, 428114, 428302, 428408, 428902, B32B 512, B32B 522, B32B 2738

Patent

active

052798933

ABSTRACT:
A prepreg for fiber-reinforced composite materials comprising (A) a reinforcing fiber having a modulus of elasticity of 200 GPa or more, (B) a fibrous thermoplastic resin having a modulus of elasticity of 100 GPa or less, and (C) a thermosetting matrix resin. The prepreg of the present invention does not only have excellent handling property equivalent to that of the prepreg with the conventional thermosetting resin as a matrix, but also gives excellent toughness to the resulting molded product without injuring the thermal and mechanical properties. Particularly, it has a high resistance to interlaminar fracture when exposed to impact, so that it is preferably used as a structural material for airplanes, etc.

REFERENCES:
patent: 3472730 (1969-10-01), Frigstad
patent: 4543286 (1985-09-01), Harpell et al.
patent: 4574108 (1986-03-01), Fakirov et al.
patent: 4604319 (1986-08-01), Evans et al.
patent: 5002821 (1991-03-01), Browne et al.
patent: 5028478 (1991-07-01), Odagiri et al.
Database WPIL, AN 83-45861K, & JP-A-58-057-437, Apr. 5, 1983.
Database WPIL, AN 89-274953, & JP-A-1-200-914, Aug. 14, 1989.

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