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Special flame-retardant nylon material for cable sheaths of new energy vehicles, and preparation method thereof

A flame-retardant nylon, new energy vehicle technology, applied in plastic/resin/wax insulators, organic insulators, electrical components, etc., can solve the problems of inconvenient procurement, high price, long cycle, etc., to improve processing performance and apparent performance , the effect of improving flexibility and flame retardancy

Inactive Publication Date: 2019-09-06
SHANDONG DONGCHEN ENG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to relevant customer reports, relevant automobile factories currently require flame-retardant nylon 12 material or other nylon materials with comparable performance to replace PVC materials to make some demanding new energy vehicle cables, because nylon 12 materials currently mainly rely on imports, The price is expensive and the procurement cycle is long. I hope that the relevant domestic nylon materials can be used to replace the relevant nylon 12 materials. I hope that we can develop relevant materials for their use.

Method used

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  • Special flame-retardant nylon material for cable sheaths of new energy vehicles, and preparation method thereof
  • Special flame-retardant nylon material for cable sheaths of new energy vehicles, and preparation method thereof
  • Special flame-retardant nylon material for cable sheaths of new energy vehicles, and preparation method thereof

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Experimental program
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Effect test

preparation example Construction

[0023] Preparation of Raw Material Tackifying Nylon 1012 Resin

[0024] Preparation of nylon 1012 resin: Dissolve 1 mol of decanediamine, hexamethylenediamine mixture (wherein the weight ratio of decanediamine and hexamethylenediamine is 97:3) and 1.0mol of dodecane dibasic acid in deionized water, at 75 Stir and mix for 30 minutes at ℃ to carry out neutralization reaction to prepare nylon 1012 salt, and continue to keep warm at 70°C; then add 1012 salt at 70°C, deionized water, and antioxidant (phosphorous acid) into the polymerization kettle, and heat up to 230°C , under the pressure of 1.3MPa (gauge pressure), polymerize for 6 hours, then depressurize to normal pressure, continue to keep warm for 50 minutes, take samples to detect the melt index, if the melt index is less than 16g / 10min, start discharging, otherwise continue to maintain pressure, according to the specific Determine the pressure holding time (about 10-20min) for the condition of the melt finger and take samp...

Embodiment 1

[0038] Then add 70 kg of tackified nylon 1012 resin, 30 kg of nylon 12 elastomer, 8 kg of nitrogen-based flame retardant (German BASF flame retardant MC50), and 0.3 kg of compound lubricant into the high-mixer in turn for 3 minutes. Put the materials for use.

[0039] Extruder setting temperature: feeding section 140°C, melting section 200-220°C, head section 210-230°C, screw speed: 15Hz.

[0040] After the temperature of each section of the relevant extruder reaches the set temperature and the screw can be rotated by hand, after cleaning the equipment with relevant raw materials, add the mixed materials into the extruder for mixing, and the standby head can extrude the material smoothly. When the strips are drawn, carry out traction cooling, air-drying and granulation (drying with a blow dryer, granulation with a granulator).

[0041] Then sieve with a vibrating sieve, dry the material at 80°C, and after the moisture reaches within 0.1%, discharge the material and carry out ...

Embodiment 2

[0043] Add 50 kg of tackified nylon 1012 resin, 50 kg of nylon 12 elastomer, 12 kg of nitrogen-based flame retardant (Doher-6003), and 1 kg of compounded lubricant into the high-mixer in turn for 5 minutes and discharge for later use.

[0044] Extruder setting temperature: feeding section 160°C, melting section 210-230°C, head section 220°C, screw speed: 30Hz.

[0045] Dry the material at 90°C, and after the moisture reaches less than 0.1%, discharge the material and carry out moisture-proof packaging.

[0046] Others are with embodiment 1. The performance index of the product is shown in Table 3 below.

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Abstract

The invention discloses a special flame-retardant nylon material for cable sheaths of new energy vehicles, and a preparation method thereof. The special flame-retardant nylon material for cable sheaths of new energy vehicles, having a good flexibility, excellent processing performances, excellent adhesion to metals and new energy vehicle cable sheath requirement-meeting environmental protection and flame retardation performances, is prepared by using self-synthesized tackifying nylon 1012 resin as a base material, adding proper amounts of assistants such as a toughening agent (a nylon 12 elastomer or a maleic anhydride-grafted elastomer), a flame retardant and a compounded lubricant and using a self-designed screw rod; and the performances of the product are as follows: the tensile strength being more than 30 MPa, the elongation percentage being more than 150%, the bending strength being less than 40 MPa, the charpy notched impact strength being NB, and the flame retardation level being not less than FV-2 (thickness 1.6 mm).

Description

technical field [0001] The invention relates to a flame-retardant nylon special material for a new energy vehicle cable sheath and a preparation method thereof, which is applied in the automobile industry and belongs to the technical field of chemistry and chemical engineering. Background technique [0002] New energy vehicle cables, the abbreviation of wires and cables used in new energy vehicles. According to different application scenarios, new energy vehicle cables can be divided into in-vehicle cables, charging pile cables and on-board charging cables. Regardless of whether it is the cable in the car or the cable of the charging pile, due to the harsh environment of use, the high and low temperature resistance, electrical insulation, oil and water resistance, weather resistance, abrasion resistance, bending resistance, tear resistance, Flame retardancy and so on have strict requirements. Nylon (Nylon) is called polyamide, which is one of the five major engineering pla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L77/02C08L83/04C08K5/3492C08K5/098C08K5/20H01B3/30
CPCC08L77/02C08L77/06C08L2201/02C08L2203/202C08L2205/03H01B3/305C08L83/04C08K5/34928C08K5/098C08K5/20
Inventor 刘建伟王朝进王健杨春艳田国锋侯绍刚张全福陈萌
Owner SHANDONG DONGCHEN ENG PLASTIC
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