WO1988007933A1 - Barrier material for gel sealant-cable jacket interface - Google Patents
Barrier material for gel sealant-cable jacket interface Download PDFInfo
- Publication number
- WO1988007933A1 WO1988007933A1 PCT/US1988/001186 US8801186W WO8807933A1 WO 1988007933 A1 WO1988007933 A1 WO 1988007933A1 US 8801186 W US8801186 W US 8801186W WO 8807933 A1 WO8807933 A1 WO 8807933A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- article
- gel
- barrier
- cable jacket
- gel material
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/40—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes epoxy resins
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/42—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes polyesters; polyethers; polyacetals
- H01B3/421—Polyesters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/443—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from vinylhalogenides or other halogenoethylenic compounds
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/448—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from other vinyl compounds
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/46—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes silicones
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
- H01B7/285—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
- H01B7/285—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable
- H01B7/2855—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable using foamed plastic
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Definitions
- This invention relates to the use of gel sealing materials on an exterior surface of plasticized polymeric articles, such as PVC cable jackets.
- Gel materials have been used in splice cases for sealing the external surface of cable jackets to prevent moisture and other environmental elements from entering the splice case.
- gel seals are used where a cable enters or exits a splice case closure.
- Such a gel seal and splice case closure is disclosed in copending application U.S. serial no. 698,643 filed February 6, 1985, the disclosure of which is incorporated herein by reference.
- the gel materials useful in forming such seals are described in U.S. patents 4,600,261 to Debbaut; 4,634,207 to Debbaut; 4,595,635 to Dubrow et al . , and copending applications U.S. serial no. 507,433 filed June 26, 1983, U.S.
- the gel materials useful in sealing cable jackets and other plasticized polymeric articles have a cone penetration value from about 50 to about 350 (mm -1 ) and an ultimate elongation of at least aoout 100%, which cone penetration o and ultimate elongation are determined according to standard ASTM tests D217 and D638, respectively, as set forth in the above referenced patents and applications incorporated herein by reference.
- These gel materials in general comprise a polymeric component which constitutes up to ' about 50% of the gel and an oil material -which is at least about 50% of the gel by weight, such as- ineral oil, hydrocarbon oil, silicone oil and the like, depending on the polymeric structure present in the gel material.
- these gel materials contain at least about 70% oil and up to about 30% polymer and in many cases contain more than 80% oil and less than about 20% polymer.
- plasticized polymeric articles such as the plastic jackets on telecommunication cables, which are PVC jackets
- plasticizer present in the plastic article migrates into the gel or the oil component of the gel migrates into the plastic article, or in some instances both occur.
- Such migration causes detrimental changes in properties of the polymeric article and could be- revented by placing an impervious film between the gel material and the polymeric article, such as an alu ⁇ minum foil or other impervious material which would prevent the oils in the gels and the plasti ⁇ izers in the plastic articles from migrating.
- the gel sealing material is used because it forms a ⁇ superior seal to the surface of the polymeric article, such as a cable jacket, because of the softness, conformability and other surface properties of the gel which forms the superior seal to pre- vent water and other environmental contaminants from entering a splice case or other closure through the inter ⁇ face between the gel seal and the polymeric article.
- this invention provides an assembly comprising a plasticized polymeric article, a gel material adjacent a surface of said polymeric article and a foam barrier disposed as a layer between said article and said gel material for substantially preventing migration of plasticizer from said article into said gel material and preferably also substantially preventing migration of oil from said gel material.
- this invention provides a shaped gel article for sealing against a surface of a plasticized poly ⁇ meric article and having disposed on a surface of the shaped gel article intended for sealing said surface of the poly ⁇ meric article a foam barrier disposed as a layer on the sur ⁇ face of the shaped gel article for substantially preventing migration of plasticizer from said article into said gel material and preferably also substantially preventing migra ⁇ tion of oil from the gel material.
- this invention provides a method of substantially preventing migration of plasticizer from a plasticized polymeric article and preferably also substan ⁇ tially preventing migration of oil from a gel material adja ⁇ cent said polymeric article, which comprises interposing between the article and the gel material a foam barrier which substantially prevents such migration of plasticizer and preferably such migration of oil.
- the barrier material useful in this invention must be a foam (particularly a closed cell foam, examples of which are given below) so that it does not prevent the gel material from sealing to the surface of the polymeric article. However, it must be capable of preventing the migration of plasticizer from the polymeric article into the gel or into itself and prevent the migration of oil from the gel into the polymeric article at least to the extent that after a six-day, 80°C contact as described below the needle hardness of the polymeric article decreases no more than about 60%, preferably no more than about 50%, and most preferably no more than about 35%.
- the barrier materials are preferably nitrile foams or polyester foams.
- This table shows the needle hardness of PVC cable insu ⁇ lation after wrapping the specified barrier material around an AT&T 25 pair inside telephone cable and inserting the cable into a Raychem TRAC ® splice closure with K-GEL end pieces and aging the samples six days at 80°C.
- Neoprene foam 0.2 + 0.4
- polyester foam (from
- the Geltek. strip is a silicone gel strip as disclosed in U.S. patent 4,595,635
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Sealing Material Composition (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR888807456A BR8807456A (en) | 1987-04-13 | 1988-04-13 | BARRIER MATERIAL FOR GEL-CAPE SEALING INTERFACE |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US3774787A | 1987-04-13 | 1987-04-13 | |
US037,747 | 1987-04-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1988007933A1 true WO1988007933A1 (en) | 1988-10-20 |
Family
ID=21896082
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1988/001186 WO1988007933A1 (en) | 1987-04-13 | 1988-04-13 | Barrier material for gel sealant-cable jacket interface |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0355108A4 (en) |
JP (1) | JPH02502985A (en) |
AU (1) | AU615655B2 (en) |
BR (1) | BR8807456A (en) |
WO (1) | WO1988007933A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0323914A2 (en) * | 1988-01-08 | 1989-07-12 | Raychem Limited | Arrangement for encapsulating electrical wires |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4466843A (en) * | 1981-06-08 | 1984-08-21 | Raychem Corporation | Protection of cable splice |
US4643924A (en) * | 1985-03-25 | 1987-02-17 | Raychem Corporation | Protective article comprising an elastic gel |
US4695676A (en) * | 1985-05-30 | 1987-09-22 | Raychem Corp. | Cable blocking and block splice protection |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4668564A (en) * | 1985-12-26 | 1987-05-26 | Spenco Medical Corporation | Hydrogel materials for hot and cold therapy and method for forming same |
-
1988
- 1988-04-13 AU AU16803/88A patent/AU615655B2/en not_active Ceased
- 1988-04-13 JP JP63503444A patent/JPH02502985A/en active Pending
- 1988-04-13 BR BR888807456A patent/BR8807456A/en not_active Application Discontinuation
- 1988-04-13 WO PCT/US1988/001186 patent/WO1988007933A1/en not_active Application Discontinuation
- 1988-04-13 EP EP19880903732 patent/EP0355108A4/en not_active Ceased
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4466843A (en) * | 1981-06-08 | 1984-08-21 | Raychem Corporation | Protection of cable splice |
US4643924A (en) * | 1985-03-25 | 1987-02-17 | Raychem Corporation | Protective article comprising an elastic gel |
US4695676A (en) * | 1985-05-30 | 1987-09-22 | Raychem Corp. | Cable blocking and block splice protection |
Non-Patent Citations (1)
Title |
---|
See also references of EP0355108A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0323914A2 (en) * | 1988-01-08 | 1989-07-12 | Raychem Limited | Arrangement for encapsulating electrical wires |
EP0323914A3 (en) * | 1988-01-08 | 1991-12-18 | Raychem Limited | Arrangement for encapsulating electrical wires |
Also Published As
Publication number | Publication date |
---|---|
AU615655B2 (en) | 1991-10-10 |
AU1680388A (en) | 1988-11-04 |
BR8807456A (en) | 1990-05-22 |
EP0355108A4 (en) | 1990-05-14 |
EP0355108A1 (en) | 1990-02-28 |
JPH02502985A (en) | 1990-09-20 |
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