Manufacture of insulated electric conductors

Details Manufacture of insulated electric conductors Manufacture of insulated electric conductors

1982-03-12

1984-04-24

Thurlow, Jeffery R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

174110PM, 174110S, 2642096, 2642106, 264211, 428 36, 525101, 525106, 525288, B29D 2301

Patent

active

044449488

ABSTRACT:
A mixture of substances is fed to an extruder and, after being homogenized and liquefied, is extruded on an electric conductor or as a pipe. To meet electric cable specifications, the insulating material used is a polyolefin, such as polyethylene, cross-linking of which is brought about by the addition of a silane, a free-radical generator, and a silanol condensation catalyst. After extrusion, cross-linking takes place in the presence of moisture. To facilitate penetration of the moisture and accelerate cross-linking, an agent capable of reducing the rate of crystallization of the polymer, such as vinyl acetate, is used as a further additive.

REFERENCES:
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patent: 4135825 (1979-01-01), Kertscher
patent: 4136132 (1979-01-01), Poole
patent: 4228255 (1980-10-01), Fujimoto et al.
patent: 4351790 (1982-09-01), Hochstrasser et al.

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