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Oil-resistant, wear-resistant and low-temperature-resistant locomotive-cable irradiation-cross-linking halogen-free flame-retardant cable material

A flame retardant cable material, locomotive cable technology, applied in the direction of insulated cables, cables, circuits, etc., can solve the problem of difficult to meet the requirements of oil resistance and low temperature resistance, achieve strong wear resistance, good flame retardant performance, good low temperature performance Effect

Active Publication Date: 2016-11-16
中广核三角洲(江苏)塑化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the published Chinese patent documents, there is a lot of technical information on oil-resistant locomotive cable irradiation cross-linked halogen-free flame-retardant cable materials, but it is difficult for conventional low-smoke, halogen-free, flame-retardant polyolefin materials to achieve performance. The balance of oil resistance and low temperature resistance requirements, and polyolefin materials that have excellent wear resistance, halogen-free, and pass the single vertical combustion test of IEC60332-1 have not been seen in the domestic market, and it is also a challenge worth breaking through technical challenge

Method used

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  • Oil-resistant, wear-resistant and low-temperature-resistant locomotive-cable irradiation-cross-linking halogen-free flame-retardant cable material
  • Oil-resistant, wear-resistant and low-temperature-resistant locomotive-cable irradiation-cross-linking halogen-free flame-retardant cable material
  • Oil-resistant, wear-resistant and low-temperature-resistant locomotive-cable irradiation-cross-linking halogen-free flame-retardant cable material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1~3

[0038] Examples 1-3: Irradiation cross-linked halogen-free flame-retardant cable material for oil-resistant, wear-resistant and low-temperature resistant locomotive cables

[0039] Preparation method: Mix the materials in the raw material formula according to the weight and number, put them into a high-speed mixer and mix them for 5-10 minutes, and then put them into a pressurized internal mixer for mixing. The mixing temperature is 140-150°C. Send it into a single-screw extruder for extrusion and granulation, the extrusion temperature is 110~150°C, and the extrusion speed is 200~300r / min.

[0040] The pellets are plasticized on an open mill, and the temperature of the open mill is 130~145°C.

[0041] Place the flakes in a hydraulic press at 160~170°C for 6 minutes without pressurization, then pressurize and heat for 4 minutes, the pressure is greater than 15MPa, and then pressurize and cool to room temperature.

[0042] The test piece is irradiated and cross-linked, the irra...

Embodiment 4~5

[0058] Examples 4~5: Irradiation cross-linked halogen-free flame-retardant cable material for oil-resistant, wear-resistant and low-temperature resistant locomotive cables

[0059] Preparation method is with embodiment 1~3, and raw material formula is made up of the component of following weight parts, as shown in table 3:

[0060] table 3

[0061]

[0062] Wherein, the average particle diameters of the aluminum hydroxide and magnesium hydroxide are both 0.8-1.5 μm;

[0063] The mean particle diameter of described nano zirconium carbide is 20~60nm;

[0064] The mass content of the active ingredient silicone in the silicone masterbatch is 50-55%.

[0065] The linear low-density polyethylene is metallocene linear low-density polyethylene, and the melt index is 0.08-2g / 10min.

[0066] The mass percentage of vinyl acetate in the ethylene-vinyl acetate copolymer is 40-65%, and the melt index of the ethylene-vinyl acetate copolymer is 2-10g / 10min.

[0067] The ternary nylon is ...

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Abstract

The invention discloses an oil-resistant, wear-resistant and low-temperature-resistant locomotive-cable irradiation-cross-linking halogen-free flame-retardant cable material. Raw materials in the formula are mixed in the weigh ratio, extruded and prilled through an internal mixer and a single screw extruder, and the cable material is prepared. The cable material is characterized by being prepared from, by weight, 20-25 parts of linear low density polyethylene, 30-50 parts of ethylene-vinyl acetate copolymers, 10-25 parts of ternary nylon, 15-25 parts of semi-crosslinked powder nitrile rubber, 5-15 parts of maleic-anhydride grafted ethylene-propylene-diene monomer copolymers, 90-110 parts of aluminium hydroxide, 30-50 parts of magnesium hydrate, 5-10 parts of wear-resistant modifying agent, 3-5 parts of zinc borate, 0.8-1.2 parts of trimethoxysilyl-propyl-methacrylate, 3-6 parts of silicone master batches, 0.8-1.2 parts of four (beta-(3,5-ditert-butyl-4-hydroxy phenyl) propionic acid) pentaerythritol, 2-4 parts of 2-mercapto benzimidazole zinc salt and 1.5-3 parts of triallyl isocyanurate. The cable material has the advantages of being remarkable in oil resistance, excellent in wear resistance, good in low temperature resistance and the like, and can be used for producing oil-resistant locomotive cables meeting national standard requirements and European standard requirements.

Description

technical field [0001] The invention relates to an insulating material for wires and cables, in particular to an irradiation cross-linked halogen-free flame-retardant polyolefin cable material for oil-resistant, wear-resistant and low-temperature-resistant locomotive cables. Background technique [0002] With the rapid development of the rail transit industry, the introduction of EU ROHS and REACH environmental protection regulations, and the need for safety, the requirements for rail transit cables are getting higher and higher, and they must comply with GB / T 12528.11-2004, TJ / CL 254- 2013, EN 50306 and other rolling stock cable standards not only require safety, environmental protection, and energy saving of locomotive cables, but also have higher and higher requirements for oil resistance, high and low temperature resistance, wear resistance and flame retardancy. [0003] In the published Chinese patent documents, there is a lot of technical information on oil-resistant l...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L77/06C08L9/02C08L51/06C08K13/06C08K9/00C08K3/22C08K3/38C08K5/5425C08K5/134C08K5/3492C08K3/14H01B3/44H01B7/295
CPCC08L23/0853C08L2201/02C08L2201/22C08L2203/202C08L2205/02C08L2205/035H01B3/441H01B7/295C08L23/0815C08L77/06C08L9/02C08L51/06C08K13/06C08K9/00C08K2003/2227C08K2003/2224C08K2003/387C08K5/5425C08K5/1345C08K5/3492C08K3/14
Inventor 高晓慧曾光新
Owner 中广核三角洲(江苏)塑化有限公司
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