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Insulating rubber for high carrying capacity low surface temperature rise cables for ships and preparation method thereof

A technology of cable insulation and insulating rubber, applied in the field of cable insulating rubber, which can solve the problems of poor heat dissipation of cables, insufficient reduction of cable surface temperature rise, and reduction of cable ampacity

Active Publication Date: 2015-07-08
嘉兴君宏汽车配件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing technology is mainly to increase the current carrying capacity of the cable by increasing the rated working temperature of the insulation and sheath material. However, due to the small thermal resistance coefficient of the existing material, the surface temperature of the cable is very high, which can reach 110 ° C. The heat dissipation in the narrow space of the ship is not smooth, causing the ambient temperature to rise, which will further reduce the current carrying capacity of the cable, and affect the safety of other surrounding facilities, resulting in a vicious circle
The thermal resistance coefficient of the existing rubber insulation material is 6.0 K m / W, and the thermal resistance coefficient of the low-smoke halogen-free sheath material is 3.5 K m / W, which is not enough to reduce the temperature rise of the cable surface

Method used

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  • Insulating rubber for high carrying capacity low surface temperature rise cables for ships and preparation method thereof
  • Insulating rubber for high carrying capacity low surface temperature rise cables for ships and preparation method thereof
  • Insulating rubber for high carrying capacity low surface temperature rise cables for ships and preparation method thereof

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Effect test

Embodiment 1

[0019] The manufacturing method of the high ampacity low surface temperature rise cable insulating rubber for ships of the present invention comprises the following steps in turn: (1) Prepare raw materials according to the following components and weight content, 110-2-B methyl vinyl silicone rubber: 20 Parts; Di-tert-butyl peroxide: 0.2 parts; Fumed silica: 5 parts; Titanium dioxide: 1 part; Diphenylsilanediol: 0.4 parts; Hydroxy silicone oil: 2 parts; Low-temperature glass powder: 4 parts; ferric oxide: 0.5 parts.

[0020](2) Mix 110-2-B methyl vinyl silicone rubber, fumed white carbon black, titanium dioxide, and ferric oxide at low temperature on an open rubber mixer until uniform, and cover the front roller when mixing , followed by wrapping the rear roll within 10 seconds, the speed ratio of the front and rear rolls is 1.1:1, the temperature of the front roll is 30°C, the temperature of the rear roll is 20°C, and the distance between the front and rear rolls is 5mm; Kee...

Embodiment 2

[0023] The manufacturing method of the high ampacity low surface temperature rise cable insulating rubber for ships of the present invention comprises the following steps in turn: (1) Prepare raw materials according to the following components and weight content, 110-2-B methyl vinyl silicone rubber: 20 Parts; Di-tert-butyl peroxide: 0.3 parts; Fumed silica: 7 parts; Titanium dioxide: 2 parts; Diphenylsilanediol: 0.7 parts; Hydroxy silicone oil: 3.5 parts; Low-temperature glass powder: 6 parts; ferric oxide: 1.0 parts.

[0024] (2) Mix 110-2-B methyl vinyl silicone rubber, fumed white carbon black, titanium dioxide, and ferric oxide at low temperature on an open rubber mixer until uniform, and cover the front roller when mixing , followed by wrapping the rear roll within 12 seconds, the speed ratio of the front and rear rolls is 1.15:1, the temperature of the front roll is 35°C, the temperature of the rear roll is 25°C, and the distance between the front and rear rolls is 5.5 ...

Embodiment 3

[0027] The manufacturing method of the high ampacity low surface temperature rise cable insulating rubber for ships of the present invention comprises the following steps in turn: (1) Prepare raw materials according to the following components and weight content, 110-2-B methyl vinyl silicone rubber: 20 Parts; Di-tert-butyl peroxide: 0.4 parts; Fumed silica: 9 parts; Titanium dioxide: 3 parts; Diphenylsilanediol: 1 part; Hydroxy silicone oil: 5 parts; Low-temperature glass powder: 8 parts; ferric oxide: 1.5 parts.

[0028] (2) Mix 110-2-B methyl vinyl silicone rubber, fumed white carbon black, titanium dioxide, and ferric oxide at low temperature on an open rubber mixer until uniform, and cover the front roller when mixing , followed by wrapping the rear roll within 15 seconds, the speed ratio of the front and rear rolls is 1.2:1, the temperature of the front roll is 40°C, the temperature of the rear roll is 30°C, and the distance between the front and rear rolls is 6mm; then ...

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Abstract

The invention discloses an insulating rubber for high carrying capacity low surface temperature rise cables for ships and a preparation method thereof. The insulating rubber comprises the following raw materials: 20 parts of 110-2-B methyl vinyl silicone rubber, 0.2-0.4 part of di-tert-butyl peroxide, 5-9 parts of fumed silica, 1-3 parts of titanium dioxide, 0.4-1 part of diphenyl silanediol, 2-5 parts of hydroxyl silicone oil, 4-8 parts of special low temperature glass powder for porcelainized silicone rubber and 0.5-1.5 parts of ferric oxide. The insulating rubber prepared by the method has excellent mechanical properties, high insulation resistance, high thermal resistivity above 6.6K.m / W and good heat-insulating property and can increase the carrying capacity under the condition of the same sectional area of conductors.

Description

technical field [0001] The invention relates to a cable insulating rubber, in particular to a cable insulating rubber with high ampacity and low surface temperature rise for ships. The invention also relates to a method for manufacturing the insulating rubber of the ship's high-carrying-capacity low-surface-temperature-rise cable. Background technique [0002] As the country pays more attention to the development and utilization of marine energy, a large number of new ships have been built. Since most of the ships sail in the open sea and spend a long time at sea, it is necessary to reduce the weight of the ship itself and increase the payload of the ship. As the power transmission equipment of the ship, the weight of the cable has a great influence on the load of the ship. The weight of the cable is related to the cross-sectional area of ​​the conductor, and the cross-sectional area of ​​the conductor is mainly determined by the current-carrying capacity. In addition to th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/07C08L83/06H01B3/28C08K13/02C08K5/14C08K3/36C08K3/22C08K5/5419C08K3/40B29B7/56B29C47/00
Inventor 李永江
Owner 嘉兴君宏汽车配件有限公司