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Underwater cable solid filling material, preparation method and application

A technology for underwater cables and filling materials, applied in cable/conductor manufacturing, submarine cables, insulated cables, etc., can solve problems such as difficult to achieve temperature resistance, poor temperature resistance, high water permeability, etc., and achieve viscosity and operating time Controllable, improving the effects of poor aging resistance and high heat resistance

Active Publication Date: 2020-08-11
李春梅
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyurethane material is used for filling, which has the defects of high water permeability and poor temperature resistance; liquid silicone material has good water resistance and temperature resistance, but low strength; epoxy resin has good water resistance, but hardness is relatively high High, high modulus, cannot be bent after curing and molding, and it is not easy to achieve the best temperature resistance

Method used

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  • Underwater cable solid filling material, preparation method and application
  • Underwater cable solid filling material, preparation method and application
  • Underwater cable solid filling material, preparation method and application

Examples

Experimental program
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preparation example Construction

[0066] Such as figure 1 As shown, the preparation method of the underwater cable solid filling material provided by the embodiment of the present invention comprises the following steps:

[0067] S101, with polyurethane as the main material, selects different polyols and isocyanates to make prepolymers, selects different types of chain extenders and proportions to adjust the hardness, and adds different types and proportions of additives to meet the acoustic performance including sound transmission and noise reduction performance requirements.

[0068] S102, with polyurethane as the main material, is grafted and copolymerized with epoxy resin and silica gel respectively or used together to meet the requirements of material temperature resistance, low water permeability and strength;

[0069] S103, use polyurethane as the main material, and use or graft petroleum resin, alkane, etc., and use different diluents to adjust the density.

[0070] S104, by selecting different catal...

Embodiment 1

[0073] Example 1 Solid filling materials used in shallow seas. The following describes the production process of one of the grades, and compares its performance indicators and application advantages with international typical grades.

[0074] Step 1: Add 3000 grams of polyether polyol with a molecular weight of 2400 and 641.65 grams of MDI into a 5-liter three-neck flask, heat to 80-85 degrees under stirring, and keep warm for 2.5 hours. On discharge, the test NCO percentage was 2.87.

[0075] Step 2: In a 5-liter reactor, add 1600 grams of the above-mentioned prepolymer, and add 2400 grams of paraffin oil with a flash point of 186 degrees and a density of 0.86 to prepare component A of the solid filler.

[0076] Step 3: In a 5-liter reactor, add 1913 grams of polyether polyol with a molecular weight of 3500 and 26 grams of trimethylolpropane (solid state), vacuumize and heat to 80 degrees under stirring, keep warm, and keep stirring and vacuuming After 1 hour, the temperatur...

Embodiment 2

[0083] Embodiment 2, low water permeability and medium temperature resistance series for deep water application, the production process of one of the grades is described below:

[0084] Step 1: Add 1,000 grams of hydroxyl-terminated polybutadiene with a hydroxyl value of 0.75 and a molecular weight of 3020 into a three-necked flask, add 142.2 grams of TDI, heat to 80 degrees under stirring, keep warm for 2.5 hours under stirring, add 295.3 grams of E51 epoxy resin was reacted at 110 degrees for 4 hours to carry out epoxidation grafting reaction, cooling and discharging. Add 2953.6 grams of naphthenic white oil with a flash point of 190 degrees and a density of 0.895 to the above reactant, and mix well to obtain component A of the solid filler.

[0085] Step 2: Add 898.4 grams of the above-mentioned hydroxyl-terminated polybutadiene into the three-necked bottle, heat it to about 110 degrees, add 67 grams of MOCA, 2 grams of stannous octoate, start timing after the MOCA is compl...

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Abstract

The invention belongs to the technical field of filling materials, and discloses an underwater cable solid filling material, a preparation method and applications thereof. Polyurethane is adopted as amain material, different polyols and isocyanates are selected to prepare a prepolymer, different types of chain extenders and ratios are selected to carry out hardness adjustment, and different typesand ratios of assistants are added; polyurethane is used as the main material and is subjected to graft copolymerization or combined use with epoxy resin and silica gel respectively, and the requirements of temperature resistance, low water permeability, strength and adhesion of the material are met by adjusting the molecular structure of the material; the polyurethane main material is selected for grafting or petroleum resin and alkane are used together, and different diluents are selected for density adjustment so that the suspension requirements of the towing cable at different water depths are met; different catalysts are selected and the catalyst ratio is adjusted, the initial viscosity and the curing speed of the material can be adjusted, and different process requirements of customers are met; the storage life of the material can reach 5 years, and the material can be adjusted according to comprehensive performance requirements of products and is easy to repair.

Description

technical field [0001] The invention belongs to the technical field of filling materials, and in particular relates to a solid filling material for underwater cables, a preparation method and an application. Background technique [0002] At present, marine cables include different types such as towed cables, shore-based arrays and submarine cables. The application fields include national defense technology, oil exploration, wind power and other major fields of national construction. Towed line array sonar is also called towed array sonar, which is to inlay hydrophones on cables to form a line array, which will be retracted frequently. Used in the military field, the main application is to detect targets behind the tail of the submarine. The function is to listen to the radiation noise of the submarine, perform remote monitoring, direction finding and identification. The array length is about tens to hundreds of meters, and the working depth is variable. It has the advantag...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/10C08G18/48C08G18/32C08G81/00C08G18/69C08G18/67H01B7/14H01B7/17H01B7/18H01B7/28H01B7/285H01B13/22H01B13/32
CPCC08G18/6677C08G18/10C08G18/4804C08G81/00C08G18/69C08G18/3814C08G18/4825C08G18/3868C08G18/36H01B7/14H01B7/18H01B7/17H01B7/2806H01B7/2855H01B13/22H01B13/221H01B13/329H01B13/32C08G18/3206C08G18/48
Inventor 李春梅
Owner 李春梅
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