Sealed contact bushings
AssigneeSiemens Aktiengesellschaft
InventorsRobert Greiner, Manfred Ochsenkuehn, Angelo Polese
Life of this patent
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Abstract
According to the invention, the inventive sealed contact bushings for plastic components consist of a glass/plastic compound based on a thermoplastic, which contains a low-melting sulphophosphate glass with the following composition: 4 to 10% Li2O, 40 to 10% Na2O 4 to 8% K2O, 1 to 2 % CaO, 35 to 37% ZnO, 0 to 3% La2O3, 19 to 22% P2O5 and 19 to 22% SO3, in addition to a high-performance thermoplastic.
Claims17
A plastic component, comprising a media-tight contact bushing, wherein said media-tight contact bushing comprises a thermoplastic-based glass/plastic compound containing:
- a low-melting sulfophosphate glass of the following composition:
- 4 to 10% of Li2O, 4 to 10% of Na2O, 4 to 8% of K2O, 1 to 2% of CaO, 35 to 37% of ZnO, 0 to 3% of La2O3, 19 to 22% of P2O5 and 19 to 22% of SO3, and
- a high-performance thermoplastic;
- and wherein said media-tight contact bushing has a uniformly distributed glass structure in the μm and sub-μm range.
A plastic component comprising a media-tight contact bushing, wherein said media-tight contact bushing comprises a thermoplastic-based glass/plastic compound comprising:
- a low-melting sulfophosphate glass of the following composition:
- 4 to 10% of Li2O, 4 to 10% of Na2O, 4 to 8% of K2O, 1 to 2% of CaO, 35 to 37% of ZnO, 0 to 3% of La2O3, 19 to 22% of P2O5 and 19 to 22% of SO3, and
- a high-performance thermoplastic;
- wherein the sulfophosphate glass is 25% to 60% by weight of said thermoplastic-based glass/plastic compound;
- and wherein said media-tight contact bushing has a uniformly distributed glass structure in the μm and sub-μm range.
A media-tight contact bushing comprising a thermoplastic-based glass/plastic compound which contains:
- a low-melting sulfophosphate glass of the following composition:
- 4 to 10% of Li2O, 4 to 10% of Na2O, 4 to 8% of K2O, 1 to 2% of CaO, 35 to 37% of ZnO, 0 to 3% of La2O3, 19 to 22% of P2O5 and 19 to 22% of SO3, and
- a high-performance thermoplastic,
- wherein a material-tight joint exists between the contact bushings and the compound, and wherein said media-tight contact bushing has a uniformly distributed glass structure in the μm and sub-μm range.
Dependencies are inferred from the claim text.