NO121553B - - Google Patents
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- Publication number
- NO121553B NO121553B NO310468A NO310468A NO121553B NO 121553 B NO121553 B NO 121553B NO 310468 A NO310468 A NO 310468A NO 310468 A NO310468 A NO 310468A NO 121553 B NO121553 B NO 121553B
- Authority
- NO
- Norway
- Prior art keywords
- weight
- percent
- insulating compound
- insulating
- ethyl acrylate
- Prior art date
Links
- 150000001875 compounds Chemical class 0.000 claims description 11
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 claims description 6
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 claims description 6
- 229920002367 Polyisobutene Polymers 0.000 claims description 4
- 229920006244 ethylene-ethyl acrylate Polymers 0.000 claims description 4
- 239000012188 paraffin wax Substances 0.000 claims description 4
- 239000004014 plasticizer Substances 0.000 claims description 3
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 claims description 2
- 238000009835 boiling Methods 0.000 claims description 2
- 239000003153 chemical reaction reagent Substances 0.000 claims description 2
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 claims description 2
- 230000009974 thixotropic effect Effects 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 229910002012 Aerosil® Inorganic materials 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 229920001342 Bakelite® Polymers 0.000 description 1
- 229920005987 OPPANOL® Polymers 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 239000004637 bakelite Substances 0.000 description 1
- 150000001767 cationic compounds Chemical class 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910001411 inorganic cation Inorganic materials 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 150000002892 organic cations Chemical class 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Organic Insulating Materials (AREA)
Description
Isolermasse for kabelskjøter. Insulating compound for cable joints.
Når kabler installeres eller skjøtes er det nødvendig å be-skytte skjøtene mot fuktighet. Slik beskyttelse fås vanligvis ved å fylle rommet mellom kabelens ledere og en skjøtemuffe som plas-seres rundt skjøten, med en isolermasse som hindrer fuktighet fra å trenge seg inn i kabelskjøten. When cables are installed or joined, it is necessary to protect the joints against moisture. Such protection is usually obtained by filling the space between the cable's conductors and a joint sleeve that is placed around the joint, with an insulating compound that prevents moisture from penetrating the cable joint.
Innføringen av isolermassen i skjøtemuffen skjer vanligvis The introduction of the insulating compound into the joint sleeve usually takes place
ved å varme isolermassen opp til flytende tilstand og helle den flytende massen inn i skjøtemuffen hvor den størkner under avkjøling. Imidlertid vil kjølingen av isolermassen medføre at den trekker seg sammen slik at sprekker og hulrom kan forekomme i den ferdige skjøten. by heating the insulating mass to a liquid state and pouring the liquid mass into the joint sleeve where it solidifies during cooling. However, the cooling of the insulating mass will cause it to contract so that cracks and voids can occur in the finished joint.
Det er tidligere kjent metoder for innføring av isolermassen under trykk uten å oppvarme isolermassen til temperaturer vesentlig over romtemperatur (20° C). For at en slik isolermasse skal være dryppfri etter at skjøten er fullført, må den ha en svært høy viskositet i det aktuelle temperaturområdet samtidig som den ikke må ha noe skarpt smeltepunktsområde og kan f.eks. hovedsakelig være basert på bitumen. There are previously known methods for introducing the insulating mass under pressure without heating the insulating mass to temperatures substantially above room temperature (20° C). In order for such an insulating compound to be drip-free after the joint has been completed, it must have a very high viscosity in the relevant temperature range, while at the same time it must not have a sharp melting point range and can e.g. mainly be based on bitumen.
Noen av disse høyviskøse isolermasser har den mangel at de bare kan benyttes for lavere spenninger, mens andre masser basert på f.eks. polyisobutylen bare kan benyttes i forbindelse med et bestemt plastmateriale, f.eks. polyetylen. Some of these highly viscous insulating materials have the disadvantage that they can only be used for lower voltages, while other materials based on e.g. polyisobutylene can only be used in connection with a specific plastic material, e.g. polyethylene.
Foreliggende oppfinnelse angår en isolermasse som ikke medfører ovennevnte ulemper og som dessuten har meget gode elektriske egenskaper. The present invention relates to an insulating material which does not entail the above-mentioned disadvantages and which also has very good electrical properties.
En isolermasse i henhold til foreliggende oppfinnelse er nær-mere spesifisert i de fremsatte krav. An insulating compound according to the present invention is specified in more detail in the claims.
En isolermasse med den i de fremsatte krav angitte sammenset-ning har svært gode elektriske egenskaper og kan benyttes sammen med de to mest vanlige isolasjonsmaterialer, polyetylen og poly-vinylklorid. En slik masse har dessuten en svært liten tendens til sprekkdannelse, selv om den varmes opp og fylles inn i kabelmuffene på konvensjonell måte. Isolermassen er også smidig og kan presses inn i kabelmuffer uten foregående oppvarming og tilfredsstiller kravene til en dryppfri isolermasse. De dryppfrie egenskapene til massen kan ytterligere forbedres ved tilsetning av tixotropiske reagenser som "Bentone" eller "Aerosil". "Bentone" er et leirmineral hvor den uorganiske kation i mineralgitteret er erstattet med en organisk kation, mens "Aerosil" er en høyaktiv kiselsyre. An insulating compound with the composition specified in the claims has very good electrical properties and can be used together with the two most common insulating materials, polyethylene and polyvinyl chloride. Such a mass also has a very small tendency to crack, even if it is heated and filled into the cable sleeves in a conventional way. The insulating compound is also flexible and can be pressed into cable sleeves without prior heating and meets the requirements for a drip-free insulating compound. The drip-free properties of the mass can be further improved by the addition of thixotropic reagents such as "Bentone" or "Aerosil". "Bentone" is a clay mineral where the inorganic cation in the mineral lattice has been replaced with an organic cation, while "Aerosil" is a highly active silicic acid.
Mengden av renset parafin kan fortrinnsvis være 75-85 vektprosent, mens mengden av etylen-etylakrylat-kopolymer med en vektprosent på fortrinnsvis 5-15. I tillegg kan det tilsettes en mykner for PVC, f.eks. dioktylftalat (DOP) i en vektprosent mellom 5 og 15, fortrinnsvis ca. 10 vektprosent. Det kan ytterligere tilsettes 5-10 vektprosent polyisobutylen. Parafinen skal ha et koke-punkt-område mellom 300 og 400° C og må være svært rent. Polymer-komponenten, etylen-etylakrylat-kopolymer, skal inneholde fra 5 til 20 prosent etylakrylat og "Bakelite DPD 6169" har vist seg særlig godt egnet under eksperimentering. The amount of purified paraffin can preferably be 75-85 percent by weight, while the amount of ethylene-ethyl acrylate copolymer with a percent by weight of preferably 5-15. In addition, a plasticizer for PVC can be added, e.g. dioctyl phthalate (DOP) in a percentage by weight between 5 and 15, preferably approx. 10 percent by weight. 5-10 percent by weight of polyisobutylene can also be added. The kerosene must have a boiling point range between 300 and 400° C and must be very clean. The polymer component, ethylene-ethyl acrylate copolymer, must contain from 5 to 20 percent ethyl acrylate and "Bakelite DPD 6169" has proven particularly suitable during experimentation.
Mykneren må være av "electrical grade" og være blandbar med The plasticizer must be of "electrical grade" and be miscible with
de andre komponentene. Dioktylftalat (DOP) har vist seg godt egnet. Polylsobutylenen må ha en passende molekylvekt, ca. 95 000, og "Oppanol B15" har gitt gode resultater. Denne komponenten øker også massens klebeevne overfor isolasjonen og kabelmuffen, noe som the other components. Dioctyl phthalate (DOP) has proven to be well suited. The polyisobutylene must have a suitable molecular weight, approx. 95,000, and "Oppanol B15" has given good results. This component also increases the mass's adhesiveness to the insulation and the cable sleeve, which
medfører en betydelig bedring av skjøtens elektriske egenskaper. leads to a significant improvement in the joint's electrical properties.
Blandingen kan foregå i et kar utstyrt med en røreinnretning. Den rensede parafin varmes opp til 100-180° C og de andre komponentene tilføyes under stadig omrøring. Når alle komponentene er oppløst, avkjøles isolermassen under fortsatt omrøring til tempe-raturen er kommet ned på ca. 70-60° C. The mixing can take place in a vessel equipped with a stirring device. The purified paraffin is heated to 100-180° C and the other components are added with constant stirring. When all the components have dissolved, the insulating mass is cooled with continued stirring until the temperature has dropped to approx. 70-60°C.
Nedenfor er det gitt endel eksempler på blandinger som har vist seg å gi gode resultater. Below are some examples of mixtures that have proven to give good results.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO310468A NO121553B (en) | 1968-08-08 | 1968-08-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO310468A NO121553B (en) | 1968-08-08 | 1968-08-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO121553B true NO121553B (en) | 1971-03-15 |
Family
ID=19879379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO310468A NO121553B (en) | 1968-08-08 | 1968-08-08 |
Country Status (1)
| Country | Link |
|---|---|
| NO (1) | NO121553B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4168258A (en) * | 1978-02-15 | 1979-09-18 | N L Industries, Inc. | Grease compatible, mineral oil extended polyurethane |
| US4176239A (en) * | 1976-09-30 | 1979-11-27 | N L Industries, Inc. | Insulated electrical cable containing an agent for decontaminating and sealing the interior space thereof |
| USRE30321E (en) | 1974-01-11 | 1980-07-01 | N L Industries, Inc. | Mineral oil extended polyurethane system containing a coupling agent for decontaminating and sealing the interior spaces of an insulated electrical device |
| US4231986A (en) * | 1979-04-06 | 1980-11-04 | Nl Industries, Inc. | Grease compatible mineral oil extended polyurethane |
| US4281210A (en) * | 1978-02-15 | 1981-07-28 | Nl Industries, Inc. | Electrical devices containing a grease compatible, mineral oil extended polyurethane |
-
1968
- 1968-08-08 NO NO310468A patent/NO121553B/no unknown
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE30321E (en) | 1974-01-11 | 1980-07-01 | N L Industries, Inc. | Mineral oil extended polyurethane system containing a coupling agent for decontaminating and sealing the interior spaces of an insulated electrical device |
| US4176239A (en) * | 1976-09-30 | 1979-11-27 | N L Industries, Inc. | Insulated electrical cable containing an agent for decontaminating and sealing the interior space thereof |
| US4168258A (en) * | 1978-02-15 | 1979-09-18 | N L Industries, Inc. | Grease compatible, mineral oil extended polyurethane |
| US4281210A (en) * | 1978-02-15 | 1981-07-28 | Nl Industries, Inc. | Electrical devices containing a grease compatible, mineral oil extended polyurethane |
| US4231986A (en) * | 1979-04-06 | 1980-11-04 | Nl Industries, Inc. | Grease compatible mineral oil extended polyurethane |
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