Irradiation crosslinking low-smoke halogen-free flame-retardant insulating material for thin-wall ship cable as well as preparation method and application thereof

A technology for flame-retardant insulating materials and ships, which is applied in the field of irradiation cross-linked low-smoke halogen-free flame-retardant insulating materials and their preparation, which can solve the problems of poor scratching performance and heat aging performance of insulating materials, and achieve processing Good performance, excellent scratch resistance, excellent electrical and mechanical properties

Pending Publication Date: 2022-03-29
BAOSHENG SCI & TECH INNOVATION
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the technical problems of poor scratching performance and heat aging resistance of insulating materials used in thin-walled ship cables, we provide radiation cross-linked low-smoke, halogen-free, flame-retardant insulating materials and their products for thin-walled ship cables. Preparation method and application

Method used

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  • Irradiation crosslinking low-smoke halogen-free flame-retardant insulating material for thin-wall ship cable as well as preparation method and application thereof
  • Irradiation crosslinking low-smoke halogen-free flame-retardant insulating material for thin-wall ship cable as well as preparation method and application thereof
  • Irradiation crosslinking low-smoke halogen-free flame-retardant insulating material for thin-wall ship cable as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～ Embodiment 6

[0037] See Table 1 for the formulation of the irradiation cross-linked low-smoke halogen-free flame-retardant insulating material used in the thin-walled ship cables of Examples 1 to 6. English abbreviation or the implication of trade mark in following embodiment:

[0038] UHMWPE ultra-high molecular weight polyethylene;

[0039] POE ethylene-octene copolymer;

[0040] LDPE low-density polyethylene, HDPE high-density polyethylene; melt index is 20g / 10min~50g / 10min.

[0041] LLDPE-g-MAH linear low density polyethylene grafted with maleic anhydride,

[0042] LDPE-g-MAH low density polyethylene grafted maleic anhydride,

[0043] POE-g-MAH ethylene-octene copolymer grafted with maleic anhydride;

[0044] MH magnesium hydroxide, AH aluminum hydroxide;

[0045] Nano-MT nano montmorillonite, Nano-ZnO nano zinc oxide, Nano-AT nano attapulgite;

[0046] 1010 Tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]pentaerythritol ester,

[0047] DLTP dilauryl thiodipropionate, ...

Embodiment 7

[0068] The preparation method of the radiation cross-linked low-smoke halogen-free flame-retardant insulating material for the thin-walled ship cable of the above embodiment is as follows: ultra-high molecular weight polyethylene, polyolefin elastomer, processing modified resin, compatibilizer, Inorganic flame retardants, flame retardant synergists, composite antioxidants, lubricants and cross-linking aids are prepared according to the proportions of the examples in Table 1, then put into a high-speed mixer for premixing, and stir at room temperature Mix evenly for 3-5 minutes, then add the internal mixer for internal mixing to obtain the masterbatch, and add the twin-screw extruder through the double-cone forced feeder to extrude and granulate. The section is 190°C~200°C, the melting section is 180°C~190°C, and the head is 170°C~180°C.

[0069] The preparation method of the insulating material of Comparative Examples 1-3 is the same as that of this embodiment.

Embodiment 8

[0071] According to the preparation method in Example 7, the irradiation cross-linked low-smoke halogen-free flame-retardant insulation material for the thin-walled ship cables corresponding to the proportions of Examples 1-6 was extruded by a single-screw extruder and coated on the conductor The outer layer is used as an insulating layer, and after being irradiated and cross-linked by an electron accelerator (the radiation dose is controlled by thermal extension, and the thermal extension is controlled within 100%), thin-walled ship cables with different ratios of insulating layers (or insulation Core).

[0072] The method for preparing cables using the insulating materials of Comparative Examples 1-3 as the insulating layer is the same as that of this embodiment.

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Abstract

The invention relates to an irradiation crosslinking low-smoke halogen-free flame-retardant insulating material for a thin-wall ship cable as well as a preparation method and application thereof. Comprising the following raw materials in parts by weight: 40-60 parts of ultra-high molecular weight polyethylene, 10-30 parts of a polyolefin elastomer, 10-30 parts of processing modified resin, 10-30 parts of polyolefin grafted maleic anhydride, 120-160 parts of an inorganic flame retardant, 10-30 parts of a flame-retardant synergist, 1-3 parts of a composite antioxidant, 0.5-2 parts of a lubricant and 0.5-2.5 parts of an irradiation crosslinking aid. The inorganic flame retardant is formed by mixing magnesium hydroxide and aluminum hydroxide according to the mass ratio of (4-7): (1-3); the flame-retardant synergist is a non-metal ore or a metal oxide. After irradiation crosslinking, the insulating material disclosed by the invention has excellent scratch and wear resistance and long-term thermal aging resistance, can achieve a non-cracking effect after being aged for 2000 hours at 105 DEG C for a long time, and is excellent in flame retardant property and mechanical property.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to an irradiation cross-linked low-smoke halogen-free flame-retardant insulating material for thin-walled ship cables and its preparation method and application. Background technique [0002] Modern ships have higher and higher requirements for ship digitalization and informatization, and ships need to be equipped with a large number of communication wires and cables. Due to the limitation of combat space and load-bearing at sea, increasing the effective space utilization rate of the ship can enhance the combat capability of the ship. Therefore, reducing the outer diameter of the cable and reducing the weight of the cable can improve the space utilization rate, reduce the self-weight of the ship, increase the effective load, and enhance maneuverability Performance, which is of great significance for enhancing the combat effectiveness of ships. [0003] At present, most of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08L51/06C08K13/02C08K3/22C08K3/34C08K13/04C08K7/26
CPCC08L23/06C08L2201/02C08L2201/22C08L2203/202C08L2207/068C08L2207/062C08L2207/064C08L2205/035C08L2205/025C08L2312/06C08L2201/08C08K2201/014C08K2003/2224C08K2003/2227C08K2201/011C08K2003/2296C08L23/0815C08L51/06C08K13/02C08K3/22C08K3/346C08K13/04C08K7/26
Inventor 刘飞伟李茁实陈刚吴淑龙卢凯张军董浩仲怀洋
Owner BAOSHENG SCI & TECH INNOVATION
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