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Scratch-resistant flame-retardant thermoplastic polyurethane material and preparation method and application thereof

A thermoplastic polyurethane, flame retardant technology, used in transportation and packaging, climate sustainability, cable/conductor manufacturing, etc., can solve problems such as affecting appearance, scratching white, prone to whitening, etc. Scratch performance, solve scratch problems, effect of high mechanical properties

Pending Publication Date: 2022-01-04
广州敬信高聚物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But at the same time, the addition of flame retardants will destroy the aggregate structure inside the polyurethane to a certain extent, and part of the flame retardants will migrate to the surface of the cable during the production process, so the surface of the polyurethane sheath will be damaged It is easy to appear whitening or obvious scratches when rubbing, which not only affects the appearance, but also affects the service life to a certain extent
Although the scratch resistance of thermoplastic polyurethane sheathing materials is better than that of other types of elastomers, there are still obvious whitening phenomenon of scratches, which has a certain negative impact on the promotion and use of polyurethane sheathing materials

Method used

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  • Scratch-resistant flame-retardant thermoplastic polyurethane material and preparation method and application thereof
  • Scratch-resistant flame-retardant thermoplastic polyurethane material and preparation method and application thereof
  • Scratch-resistant flame-retardant thermoplastic polyurethane material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] A scratch-resistant flame-retardant thermoplastic polyurethane material, its raw material ratio is shown in the following table:

[0059] Table 1. Raw material ratio of flame retardant thermoplastic polyurethane materials

[0060]

[0061]

[0062] Among them, the compound halogen-free flame retardant is obtained by mixing aluminum diethyl hypophosphite and melamine cyanurate at a mass ratio of 2:1; the processing aid is a masterbatch made by compounding dimethylsiloxane and TPU , the antioxidant is BASF Irganox 245, and the compound halogen-free flame retardants, processing aids, and antioxidants of the following other examples and comparative examples are the same as in Example 1; the carbon nanotubes are commercial-grade carbon nanotubes, and the length 6μm, diameter 80nm, purity greater than 99%.

[0063] Prepare the flame-retardant thermoplastic polyurethane material as follows:

[0064] (1) Place the TPU base material in a blast oven at 110°C to dry for 8 ...

Embodiment 2

[0069] A scratch-resistant flame-retardant thermoplastic polyurethane material, its raw material ratio is shown in the following table:

[0070] Table 2. Raw material ratio of flame retardant thermoplastic polyurethane materials

[0071] raw material parts by mass 85A TPU substrate 67 Compound halogen-free flame retardant 27 Processing aids 2 antioxidant 0.2 monolayer graphene 3.8

[0072] Among them, the length of single-layer graphene is 10 μm, the thickness is 2 μm, and the purity is greater than 97%.

[0073] The preparation method of the flame-retardant thermoplastic polyurethane material and the preparation method of the cable are the same as in Example 1.

Embodiment 3

[0075] A scratch-resistant flame-retardant thermoplastic polyurethane material, its raw material ratio is shown in the following table:

[0076] Table 3. Raw material ratio of flame retardant thermoplastic polyurethane materials

[0077] raw material parts by mass 90A TPU substrate 70 Compound halogen-free flame retardant 23 Processing aids 2 antioxidant 0.2 carbon nanotubes 4.8

[0078] Among them, the carbon nanotubes are commercial-grade carbon nanotubes with a length of 6 μm, a diameter of 80 nm, and a purity greater than 99%.

[0079] The preparation method of the flame-retardant thermoplastic polyurethane material and the preparation method of the cable are the same as in Example 1.

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Abstract

The invention discloses a scratch-resistant flame-retardant thermoplastic polyurethane material and a preparation method and application thereof. The flame-retardant thermoplastic polyurethane material is prepared from the following raw materials: a thermoplastic polyurethane elastomer, a flame retardant, a carbon nanotube and / or graphene. The length of the carbon nanotube is 3-15 [mu] m, and the diameter of the carbon nanotube is 50-100 nm; the length of the graphene is 5-15 [mu] m, and the thickness is 1-3 [mu] m. The flame-retardant thermoplastic polyurethane material has excellent scratch resistance, effectively solves the scratch problem of the charging pile cable in actual use, and is not liable to generate scratch white marks; and the flame-retardant thermoplastic polyurethane material has high flame-retardant property and mechanical property, wherein the flame-retardant property can reach the flame-retardant grade UL94-V0.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a scratch-resistant flame-retardant thermoplastic polyurethane material and its preparation method and application. Background technique [0002] With the development and popularization of new energy technologies, new energy-related products such as electric vehicles have gradually entered the consumer market, and the growth momentum is strong. The sales of new energy vehicles have increased, and the demand for wire and cable products related to new energy vehicles has skyrocketed. The new energy vehicle charging pile cable is the most widely used cable product, and the sheath layer in the cable plays an important role. For new energy vehicle charging cables, the sheath layer needs to have sufficient mechanical strength and tear resistance, as well as sufficient water resistance, chemical resistance, and aging resistance. Compared with other types of cable sheath prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08L83/04C08K3/04C08K5/5313C08K5/3492H01B7/295H01B13/00B60L53/18
CPCC08L75/08H01B7/295H01B13/00B60L53/18C08L2201/02C08L2201/22C08L2203/202C08K2201/003C08K2201/004C08L83/04C08K3/041C08K5/5313C08K5/34928C08K3/042Y02T10/70Y02T10/7072Y02T90/14
Inventor 何焯健洪喜军陈娟
Owner 广州敬信高聚物科技有限公司