Preparation process of a flame-retardant wear-resistant cable

A preparation process and flame-retardant technology, which is applied in the field of preparation process of flame-retardant wear-resistant cables, can solve the problems of poor toughness, affecting the performance of wear-resistant materials, and reducing the resistance of composite materials, so as to achieve high toughness and improve performance , the effect of high flame retardant performance

Active Publication Date: 2022-06-21
广东腾丰电线电缆实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the process of cable preparation, its surface is usually covered with a protective layer. The material of the protective layer needs to have flame-retardant and wear-resistant properties. Polyphenylene ether is a polymer engineering plastic with a non-polar linear structure containing benzene rings in the main chain. , has good mechanical properties, heat resistance and flame retardancy, but because polyphenylene ether is composed of several benzene rings linked by ether bonds, it has high viscosity and poor compatibility with other components. It is poor, and it is not easy to form and process, and the toughness is poor. In order to improve the processing performance and flexibility of polyphenylene ether, elastic materials such as polypropylene and polyethylene are usually mixed, but after mixing and modification, it is easy to cause the resistance of the composite material. reduce
At the same time, in order to improve the wear resistance of the material, wear-resistant fillers are usually added to the material, and the compatibility between the wear-resistant filler and polyphenylene ether is also poor, which may easily cause the separation of the filler during the mixing process and affect the overall performance of the material.
[0003] The wear-resistant fillers used in the prior art are usually inorganic fillers. In order to improve the compatibility between inorganic fillers and organic materials, the surface of inorganic fillers is usually improved by grafting. For nano-sized inorganic fillers with smaller particle sizes, directly add modified It is easy to agglomerate and disperse unevenly in the agent, resulting in uneven graft modification and affecting the performance of the modified wear-resistant material

Method used

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  • Preparation process of a flame-retardant wear-resistant cable
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  • Preparation process of a flame-retardant wear-resistant cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The preparation process of branched aldehyde-based polyphenylene ether is as follows:

[0046] Step 1: Add 1mol p-bromobenzaldehyde, 2.2mol phenol and 400mL acetic acid to the reaction kettle at the same time, stir and dissolve, cool to 0°C, add 360mL concentrated sulfuric acid dropwise to it, control the dropwise addition within 2h, and then stir and react at constant temperature for 72h, The product was poured into ice water, stirred for 1 h, filtered, washed with water until neutral, and dried to obtain product A;

[0047] Step 2: 100g of product A, 70g of hexamethylenetetramine and 850mL of acetic acid solution with a mass concentration of 90% were added to the reactor simultaneously, and the temperature was raised to 50°C for stirring and dissolving for 30min, followed by heating to reflux after adding 70mL of water, After 8-9 hours of reaction, acetic acid was recovered under reduced pressure to dryness, then 200 mL of water was added, extracted with chloroform, a...

Embodiment 2

[0050] The preparation process of branched polyphenylene ether is as follows: add the product A prepared by 100g embodiment 1, 35g potassium carbonate, 1L toluene and 2.8L dimethyl sulfoxide in the reactor, continuously feed nitrogen into the reactor, stir After dissolving, heat to reflux for 2-3h, then add 430mg cuprous chloride to it, heat up to 170℃ for 30h, cool to room temperature and add hydrochloric acid to adjust the pH of the solution=3-3.5, then add the product to a mass concentration of 50 % methanol aqueous solution with stirring, filtration, washing and drying to obtain branched polyphenylene ether.

Embodiment 3

[0052] The preparation process of the aminoated elastomer modifier is as follows:

[0053] (1) Add 0.1 mol of diethanolamine and 11 mL of 37% formaldehyde solution to the reaction kettle at the same time, heat up to 45 °C for 2 h, then heat up to 90 °C and vacuum to remove the generated water, then cool down to 65 °C and slowly add it to the reaction kettle Add 0.094mol of diethyl phosphite, react at constant temperature for 3h, and then perform vacuum distillation to obtain dihydroxyphosphate. Infrared analysis shows that at 1246cm -1 The infrared absorption peak of P=O appeared at 3335cm -1 There is a broad infrared absorption peak of hydroxyl group;

[0054] (2) 0.1 mol of dihydroxyphosphate, 0.22 mol of allyl dimethyl chlorosilane and 70 mL of petroleum ether were added to the reactor at the same time, the temperature was raised to 90° C. for reflux reaction for 4 h, the petroleum ether was evaporated and then vacuum distilled to obtain a double-ended Alkenyl silylated p...

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Abstract

The invention discloses a preparation process of a flame-retardant wear-resistant cable. The specific preparation process is as follows: adding a flame-retardant polymer, dioctyl phthalate, talcum powder, wear-resistant additives, antioxidants, and colorants to a high Stir evenly in a mixer, then add to an internal mixer for banburying, extrude through a screw, and granulate to obtain a cable material. In the branched aldehyde-based polyphenylene ether prepared by the present invention, a large amount of aldehyde groups are evenly grafted on the benzene ring, and at the same time, a large amount of amino groups are grafted on the chain of the aminated elastomer modifier, and the aldehyde groups and amino groups can be polymerized, and then Make the aminated elastomer modifier evenly grafted on the branched aldehyde-based polyphenylene ether, and at the same time, because the branched aldehyde-based polyphenylene ether is a branched structure, it can improve the dispersion performance with the aminated elastomer modifier, making the aminated The elastomer modifier is grafted uniformly in the polymer, which improves the performance of the polymer.

Description

technical field [0001] The invention belongs to the field of cable preparation, and relates to a preparation process of a flame-retardant wear-resistant cable. Background technique [0002] During the cable preparation process, its surface is usually covered with a protective layer. The protective layer material needs to have flame-retardant and wear-resistant properties. Polyphenylene ether is a polymer engineering plastic with a non-polar linear structure containing a benzene ring on the main chain. , has good mechanical properties, heat resistance and flame retardant properties, but because polyphenylene ether is formed by several benzene rings connected by ether bonds, it has a high viscosity and is more compatible with other components. In order to improve the processing performance and flexibility of polyphenylene ether, elastic materials such as polypropylene and polyethylene are usually mixed, but after mixing and modification, it is easy to cause the resistance prop...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B13/22C08L87/00C08K13/06C08K9/06C08K5/12C08K3/34C08K3/26C08G81/02
CPCH01B13/22C08K13/06C08K9/06C08K5/12C08K3/34C08K3/26C08G81/025C08K2003/265C08K2201/014C08L2201/02C08L2203/202C08L87/005
Inventor 苗家兵陶玉花
Owner 广东腾丰电线电缆实业有限公司
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