초록 ▼

Composite pressure vessels having improved fiber strength translation of the unidirectional, axial, impregnated strand are obtained by a process in which chemorheologically viscosity tailored matrix resin formulations containing surface-active agents or compounds acting as surface-active agents are

Composite pressure vessels having improved fiber strength translation of the unidirectional, axial, impregnated strand are obtained by a process in which chemorheologically viscosity tailored matrix resin formulations containing surface-active agents or compounds acting as surface-active agents are employed. The use of chemorheologically viscosity tailored matrix resin formulations containing surface-active agents reduces the strength variation of pressure vessels produced from prepregs of the disclosed matrix resin formulations.

대표청구항 ▼

A method for improving composite pressure vessel strength comprising: (a) providing a chemorheologically viscosity tailored resin formulation comprising a curable matrix resin and an effective amount of a reactive curing agent reactive at room temperature and a latent curing agent substantially nonr

A method for improving composite pressure vessel strength comprising: (a) providing a chemorheologically viscosity tailored resin formulation comprising a curable matrix resin and an effective amount of a reactive curing agent reactive at room temperature and a latent curing agent substantially nonreactive at room temperature but activated upon heating or radiation, said reactive curing agent including at least one anhydride functional group; (b) adding to said resin formulation an amount of surface-active agent sufficient to permit interaction between a fiber or filament and the resin formulation such that the pressure vessel tensile strength is enhanced and variation in performance is reduced; (c) impregnating a fiber or filament strand or tow with the mixture of resin formulation and surface-active agent; (d) allowing the reactive curing agent to partially cure the resin formulation and increase its viscosity, thereby forming a prepreg composition; (e) winding a pressure vessel from said strand or tow prepreg composition; and (f) activating the latent curing agent to further cure the resin formulation and form a composite pressure vessel.