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High-flame-retardant low-smoke halogen-free TPU cable material and preparation method thereof

A high flame retardant, cable material technology, used in circuits, electrical components, plastic/resin/wax insulators, etc., can solve the problem of agglomeration into small particles or powder packets, affecting the mechanical properties of cable materials, and difficult to disperse evenly by mixing machines. problems, to achieve the effect of low exudation, good cation exchangeability, and reduction of agglomeration

Inactive Publication Date: 2020-09-11
上海方之德新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there are following defects in the above-mentioned existing technical solutions: ethylene-vinyl acetate and high-density polyethylene are used as base materials, and a large amount of inorganic powder and other additives are added. The inclusiveness and compatibility of inorganic powder are poor, and it is difficult to disperse evenly in ordinary mixing machines, and even agglomerate into small particles or powder packets, which will affect the mechanical properties of cable materials

Method used

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  • High-flame-retardant low-smoke halogen-free TPU cable material and preparation method thereof
  • High-flame-retardant low-smoke halogen-free TPU cable material and preparation method thereof
  • High-flame-retardant low-smoke halogen-free TPU cable material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A high flame-retardant low-smoke halogen-free TPU cable material, its raw material ratio is shown in Table 1, the preparation method of the high flame-retardant low-smoke halogen-free TPU cable material includes the following steps:

[0036] (1) Weigh magnesium hydroxide in proportion, dry it at 102.5°C for 3.5h, add the weighed methyl methacrylate, surfactant and 1900g deionized water, and carry out under ultrasonic conditions with a frequency of 1525Hz Ultrasonic disperse for 17.5 minutes, then add the initiator, and pass through nitrogen to react for 2.5 hours, after cooling to room temperature, carry out vacuum filtration, vacuum drying, and grinding through a 95 mesh sieve to obtain modified magnesium hydroxide particles;

[0037] (2) Weigh thermoplastic polyurethane and polycarbonate in proportion, mix them evenly, and dry them in a vacuum oven at 76.5°C for 3 hours, and set them aside;

[0038] (3) Weigh silicone rubber, wollastonite, magnesium aluminum silicate,...

Embodiment 2

[0040] A high flame-retardant low-smoke halogen-free TPU cable material, its raw material ratio is shown in Table 1, the preparation method of the high flame-retardant low-smoke halogen-free TPU cable material includes the following steps:

[0041] (1) Weigh magnesium hydroxide in proportion, dry it at 100°C for 3 hours, add the weighed methyl methacrylate, surfactant and 1800g deionized water, and perform ultrasonication under ultrasonic conditions with a frequency of 1500Hz Disperse for 15 minutes, then add the initiator, and pass through nitrogen to react for 2 hours, after cooling to room temperature, perform vacuum filtration, vacuum drying, and grinding through a 90-mesh sieve to obtain modified magnesium hydroxide particles;

[0042] (2) Take thermoplastic polyurethane and polycarbonate in proportion, after mixing evenly, place in a vacuum oven at 75°C to dry for 2.5 hours, and set aside;

[0043] (3) Weigh silicone rubber, wollastonite, magnesium aluminum silicate, com...

Embodiment 3

[0045] A high flame-retardant low-smoke halogen-free TPU cable material, its raw material ratio is shown in Table 1, the preparation method of the high flame-retardant low-smoke halogen-free TPU cable material includes the following steps:

[0046] (1) Weigh magnesium hydroxide in proportion, dry it at 105°C for 4 hours, add the weighed methyl methacrylate, surfactant and 2000g deionized water, and perform ultrasonication under ultrasonic conditions with a frequency of 1550Hz Disperse for 20 minutes, then add the initiator, and pass through nitrogen to react for 3 hours, after cooling to room temperature, carry out vacuum filtration, vacuum drying, and grinding through a 100-mesh sieve to obtain modified magnesium hydroxide particles;

[0047] (2) Take thermoplastic polyurethane and polycarbonate in proportion, mix them evenly, place them in a vacuum oven at 78°C and dry them for 3.5 hours, and set them aside;

[0048] (3) Weigh silicone rubber, wollastonite, magnesium aluminu...

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Abstract

The invention relates to a high-flame-retardant low-smoke halogen-free TPU cable material and a preparation method thereof and relates to the technical field of cable materials. The TPU cable materialspecifically comprises the following components, in part by weight: 140-150 parts of thermoplastic polyurethane; 15-25 parts of magnesium hydroxide, 7-13 parts of silicone rubber, 7-13 parts of wollastonite, 20-30 parts of polycarbonate, 20-30 parts of methyl methacrylate, 10-20 parts of magnesium aluminum silicate, 15-25 parts of a compatilizer, 3-5 parts of an initiator, 1-4 parts of a surfactant, 2-5 parts of a dispersing agent and 1-5 parts of a smoke suppressant. The prepared high-flame-retardant low-smoke halogen-free TPU cable material has good flame retardance and smoke suppression, the inorganic flame retardant has good compatibility, dispersity and inclusivity in a system, the agglomeration phenomenon is reduced, and the production quality of the cable material is improved.

Description

technical field [0001] The invention relates to the technical field of cable materials, in particular to a high flame-retardant, low-smoke, halogen-free TPU cable material and a preparation method thereof. Background technique [0002] In recent years, with the country's emphasis on environmental protection and safety, low-smoke and halogen-free cables are not only required in some large buildings or public places, but also have higher requirements for wires and cables used in rolling stock. On the one hand, they must have excellent Flame retardant performance, the amount of smoke and corrosive gas emissions should be low when burning to prevent secondary disasters caused by smoke. On the other hand, it is required to have the characteristics of heat resistance, stress crack resistance, and long service life. Thermoplastic polyurethane elastomer (TPU) has the characteristics of good elasticity, good physical properties and good mechanical strength, and is widely used in pla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08L83/04C08L69/00C08L51/06C08K13/06C08K3/34C08K9/10C08K3/22C08K5/521H01B3/30
CPCC08K2003/2224C08K2201/014C08L75/04C08L2201/02C08L2201/22C08L2203/202C08L2205/035C08L2205/08H01B3/302C08L83/04C08L69/00C08L51/06C08K13/06C08K3/34C08K9/10C08K3/22C08K5/521
Inventor 董建东何亚丽李俊龙
Owner 上海方之德新材料有限公司
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