Flame-retardant water-resistant thermoplastic polyurethane elastomer cable material and preparation method thereof

A plastic polyurethane and cable material technology, applied in the direction of plastic/resin/wax insulators, circuits, insulators, etc., can solve problems such as water absorption, achieve the effects of reducing direct contact, improving water resistance, and large contact area

Active Publication Date: 2020-11-20
中广核高新核材科技(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a flame-retardant and water-resistant thermoplastic polyurethane elastomer cable material and its preparation method, which can solve the problem of water absorption of flame retardants, and can further improve the water resistance, flame retardancy and mechanical properties of the cable material. And at the same time meet the requirements of GB / T 33594-2017 electric vehicle charging cables for thermoplastic polyurethane elastomer sheath materials

Method used

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  • Flame-retardant water-resistant thermoplastic polyurethane elastomer cable material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Example 1 A flame-retardant and water-resistant thermoplastic polyurethane elastomer cable material and its preparation method

[0027] Weigh 76 parts by weight of TPU 585A resin, 15 parts of flame retardant, 5 parts of piperazine pyrophosphate, 2 parts of zinc stearate, 1 part of bis(2,6-diisopropylphenyl) carbodiimide , Antioxidant 1010 is 1 part, placed in a high-speed mixer, and stirred at a low speed at room temperature for 5 minutes to obtain a mixture. The mixed material is introduced into a conical feeding hopper, melted, extruded, cooled, granulated and dried by a twin-screw extruder to obtain a cable material. The temperature zones 1 to 10 of the twin-screw extruder were set as follows: 160°C, 170°C, 180°C, 190°C, 195°C, 195°C, 195°C, 195°C, 195°C, 195°C.

[0028] The flame retardant is magnesium-aluminum layered double hydroxide surface-modified diethylaluminum hypophosphite, and magnesium-aluminum layered double hydroxide is used to modify diethylaluminum h...

Embodiment 2

[0029] Example 2 A flame-retardant and water-resistant thermoplastic polyurethane elastomer cable material and its preparation method

[0030] The difference from Example 1 is that the flame retardant is montmorillonite surface-modified aluminum methyl ethyl hypophosphite, and montmorillonite is used to modify methyl ethyl hypophosphite to obtain montmorillonite modified methyl ethyl Aluminum hypophosphite. Wherein, the weight ratio of aluminum methyl ethyl hypophosphite to montmorillonite is 40:1. The preparation method of the flame retardant is the same as in Example 1.

Embodiment 3

[0031] Example 3 A flame-retardant and water-resistant thermoplastic polyurethane elastomer cable material and its preparation method

[0032] The difference from Example 1 is that the flame retardant is mica powder surface-modified aluminum hypophosphite, and mica powder is used to modify aluminum hypophosphite to obtain mica powder-modified aluminum hypophosphite. Among them, the weight ratio of aluminum hypophosphite to mica powder is 80:1. The preparation method of the flame retardant is the same as in Example 1.

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Abstract

The invention relates to a flame-retardant water-resistant thermoplastic polyurethane elastomer cable material which comprises the following components in parts by weight: 60-90 parts of TPU resin, 10-40 parts of a flame retardant, 2-10 parts of a charring agent, 1-2 parts of a dispersing agent, 0.5-1.5 parts of a molecular chain repairing agent and 0.3-1 part of an antioxidant. The flame retardant is surface-modified hypophosphite, and the hypophosphite is modified by using layered double hydroxide or layered silicate to obtain the surface-modified hypophosphite. According to the invention, the problem of water absorption of the flame retardant is solved, the water resistance, flame retardance and mechanical properties of the cable material can be further improved, and meanwhile, the requirements of a GB / T 33594-2017 cable for charging an electric vehicle on a thermoplastic polyurethane elastomer sheath material are met. The prepared cable material can be applied to the fields of charging pile cables or underwater cables and the like.

Description

technical field [0001] The invention relates to the technical field of cable materials, in particular to a flame-retardant and water-resistant thermoplastic polyurethane elastomer cable material and a preparation method thereof. Background technique [0002] Thermoplastic polyurethane elastomer (TPU) is mainly divided into polyester type and polyether type. It has a wide range of hardness (60HA-85HD), wear resistance, oil resistance, transparency and good elasticity. It is widely used in the field of cable material preparation. There are a variety of low-smoke, halogen-free flame-retardant TPU cable materials that meet the flame-retardant requirements of UL wires in foreign markets, but the comprehensive performance of domestically produced low-smoke, halogen-free flame-retardant TPU cable materials is far inferior to imported products. Technical monopoly leads to high prices of imported flame-retardant TPU cable materials, which limits its application in the domestic market...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08K13/06C08K9/02C08K5/5313C08K5/3462C08K3/32H01B3/30
CPCC08K3/32C08K5/3462C08K5/5313C08K9/02C08K13/06C08L2201/02C08L2203/202H01B3/302C08L75/04
Inventor 魏文超费楚然
Owner 中广核高新核材科技(苏州)有限公司
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