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Halogen-free flame retardant high-tear-resistance wire and cable compound for electric vehicles and wire and cable production method

A wire and cable material and electric vehicle technology, applied in the direction of plastic/resin/wax insulators, organic insulators, etc., can solve the problems of loss of cable flexibility, cracking of cable sheath, and insufficient production efficiency, and achieve extrusion processing performance improvement, anti-corrosion Improved tear performance and reduced irreversible deformation

Inactive Publication Date: 2015-11-11
SHENZHEN WOER HEAT SHRINKABLE MATERIAL +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the low oxygen index (18%) makes SEBS produce thick smoke and molten droplets when burning, and the flame retardant effect is not ideal
Existing patents such as US2009 / 0088502A1, US2009 / 00884577A1, CN101824201A, and CN100509938C respectively describe the improvement of flame retardancy brought about by adding polyphenylene ether (PPO) with char-forming function, but the addition of polyphenylene ether not only makes the composite system The difficulty of processing increases, and it is more prone to cracking, which affects the service life of the material
[0004] During the use of automotive cables, long-term shear, tensile load and bending deformation will cause fatigue and aging of the cable sheath, causing the cable sheath to crack and fail to meet normal use.
Patent reports on high tear-resistant cable materials such as CN101864101A, CN102408638A, CN103102543A, CN103589022A are mainly used in the field of engineering cables, and there are the following deficiencies: (1) Halogen-containing substrates such as neoprene, chlorinated polyethylene, chlorine The selection of sulfonated polyethylene will produce a large amount of toxic gas when burned, which does not meet the requirements of environmental protection; (2) Using plastomer resin as the base material to increase the hardness to enhance the tear resistance will lose the flexibility of the cable and the hand feel is not ideal; (3) )Chemical crosslinking Because of the addition of vulcanizing agents, the cable material is not clean and environmentally friendly, and the production is not efficient enough
[0005] Most of the existing patent reports on cables for electric vehicles focus on structural design and other aspects, but there are few studies on the high tear resistance of cables for electric vehicles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The formula consists of the following:

[0031] 100 copies of SEBS;

[0032] 30 parts of polypropylene;

[0033] POE15 copies;

[0034] Metallocene polyethylene (mPE) 5 parts;

[0035] Melamine cyanurate (MCA) 40 parts;

[0036] 25 parts of organic hypophosphite;

[0037] BDP35 copies;

[0038] Antioxidant 1010+1681 parts;

[0039] 2 parts of simethicone;

[0040] 40 parts of white oil.

[0041] The preparation steps are as follows:

[0042] Weigh the components according to the above formula, add them into a high-speed mixer, stir evenly, and then discharge to obtain a mixed material. The mixture is melt-extruded at 175-210°C through a twin-screw extruder with a relatively large length and diameter, drawn, cooled, and granulated to obtain a finished masterbatch of high tear-resistant halogen-free flame-retardant electric vehicle wire and cable material. The finished wire and cable material is extruded through a twin-screw extruder and a conductor (metal condu...

Embodiment 2

[0044] The formula consists of the following:

[0045] 100 copies of SEBS;

[0046] 60 parts of polypropylene;

[0047] POE10 copies;

[0048] 70 parts of organic hypophosphite;

[0049] RDP25 copies;

[0050] Antioxidant 10102 parts;

[0051] 3 parts of simethicone;

[0052] 65 parts of white oil.

[0053] The preparation steps are as follows:

[0054] Weigh the components according to the above formula, add them into a high-speed mixer, stir evenly, and then discharge to obtain a mixed material. The mixture is melt-extruded at 175-210°C through a twin-screw extruder with a relatively large length and diameter, drawn, cooled, and granulated to obtain a finished masterbatch of high tear-resistant halogen-free flame-retardant electric vehicle wire and cable material. The finished wire and cable material is extruded through a twin-screw extruder and a conductor (metal conductor such as copper or aluminum), and the obtained wire is irradiated and cross-linked by an electr...

Embodiment 3

[0056] The formula consists of the following:

[0057] 100 copies of SEBS;

[0058] 30 parts of polypropylene;

[0059] 10 copies of EVA;

[0060] mPE10 copies

[0061] MCA60 copies;

[0062] RDP30 copies;

[0063] Antioxidant 10101 parts;

[0064] 1.5 parts of polyethylene wax;

[0065] 30 parts of white oil.

[0066] The preparation steps are as follows:

[0067] Weigh the components according to the above formula, add them into a high-speed mixer, stir evenly, and then discharge to obtain a mixed material. The mixture is melt-extruded at 175-210°C through a twin-screw extruder with a relatively large length and diameter, drawn, cooled, and granulated to obtain a finished masterbatch of high tear-resistant halogen-free flame-retardant electric vehicle wire and cable material. The finished wire and cable material is extruded through a twin-screw extruder and a conductor (metal conductor such as copper or aluminum), and the obtained wire is irradiated and cross-linked b...

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Abstract

The invention discloses a halogen-free flame retardant high-tear-resistance wire and cable compound for electric vehicles. The wire and cable compound comprises the following components in parts by weight: 100 parts of styrene-ethylene / butadiene-styrene block copolymer (SEBS), 20-60 parts of polypropylene, 5-20 parts of alkene polymer, 0.3-3 parts of antioxidant, 40-90 parts of halogen-free flame retardant, 20-60 parts of charring agent, 0.5-3 parts of processing aids and 15-80 parts of softening and plasticizing agent. The invention also discloses a production method for preparing wires and cables with the wire and cable compound. Through radiation micro-crosslinking, the wire and cable products prepared with the cable compound have excellent tear resistance, higher physical and mechanical properties and good electric insulation property, achieve excellent flame retardance under the premise of satisfying environmental protection, also have the advantage of high production efficiency and can be widely applied to the field of new energy, such as cables used for electric vehicles.

Description

technical field [0001] The invention belongs to the field of cable material manufacturing for automobiles, and in particular relates to a high-tear-resistant halogen-free flame-retardant electric vehicle wire and cable material and a preparation method for the wire and cable. Background technique [0002] In today's increasingly severe environment and energy problems, electric vehicle technology, as an environmentally friendly new energy technology, has attracted the R&D enthusiasm of many domestic and international manufacturers, and the construction of basic charging facilities for electric vehicles has become a development focus. [0003] At present, the high-voltage battery connecting wires of electric vehicles on the market are all single-core insulated and sheathed structural cables, and the sheaths are all made of thermoplastic elastomer (TPE). Taking styrene-ethylene / butadiene-styrene block copolymer (SEBS) as an example, as one of the main substitutes for traditiona...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L53/02C08L23/12C08L23/06C08L23/08C08L91/06C08L91/00C08K5/3492C08K5/5313C08J3/28C08J3/24H01B3/44
Inventor 张强吴思多薄强龙林义章冯所洪
Owner SHENZHEN WOER HEAT SHRINKABLE MATERIAL
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