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Preparation of low-melting-point cosolvent and application of low-melting-point cosolvent in preparation of ceramic polyolefin cable

A technology of ceramic polyolefin and low melting point, which is applied in the preparation and application of ceramic polyolefin cables and the preparation of low melting point cosolvent, which can solve the problems of inability to effectively protect the substrate, mismatching of substrate decomposition temperature, and non-decomposition , to achieve the effect of ensuring stability, ensuring stability, and reducing the temperature of porcelain formation

Active Publication Date: 2022-05-24
GUANGDONG LINE GIANT CABLE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide the preparation of low-melting point co-solvent and its application in the preparation of ceramized polyolefin cables, so as to solve the existing problems: in the current ceramic formula, mainly low-melting point glass is used as co-solvent, and its melting temperature Generally above 500 degrees, although it can reduce the melting temperature of the inorganic filler, it does not match the decomposition temperature of the substrate, and cannot effectively protect the substrate from decomposition

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Preparation of low melting point cosolvent

[0029] Phosphorus pentoxide and zinc aluminate were dissolved in 200 ml of anhydrous ethanol solution, and then 1% ethylene glycol was added to prepare a sol with a P:Al:Zn molar ratio of 4:2:1. At a stirring speed of 100 rpm, after stirring the sol for 0.5 h, 10% calcium nitrate was added to prepare a mixed slurry. After stirring the prepared mixed slurry for 15 hours, put it into an oil bath at 80-120° C. and stir for 20-40 minutes to obtain a gel. Finally, put the gel into the sintering furnace, raise the temperature from 50 °C to 600 °C at a heating rate of 5 °C / min, and keep it for 2 hours, and the resulting ultrafine powder is a low melting point cosolvent.

[0030] Preparation and application of low melting point cosolvent in ceramicized polyolefin cable

[0031] Ceramicized polyolefin composition, comprising the following components by weight (%):

[0032] 7470M 25

7042 15

[0033] DOW8480 5

[0034] Low Meltin...

Embodiment 2

[0043] Preparation of low melting point cosolvent

[0044] Phosphorus pentoxide and zinc aluminate were dissolved in 350ml of anhydrous n-amyl alcohol solution, and then 3% polyvinyl alcohol was added to prepare a sol with a P:Al:Zn molar ratio of 4:2:1. At a stirring speed of 200 rpm, after stirring the sol for 1.5 hours, 20% ferric sulfate was added to prepare a mixed slurry. After the prepared mixed slurry was continuously stirred for 20 hours, it was put into an oil bath at 120° C. and stirred for another 25 minutes to form a gel. Finally, put the gel into the sintering furnace, raise the temperature from 50°C to 800°C at a heating rate of 7°C / min, and keep it for 1 hour, and the resulting ultrafine powder is a low-temperature melting aid.

[0045] Preparation and application of low melting point cosolvent in ceramicized polyolefin cable

[0046] A ceramicized polyolefin composition, comprising the following components by weight (%):

[0047] V6110M 40

7042 2.5

[00...

Embodiment 3

[0059] Preparation of low melting point cosolvent

[0060]Phosphorus pentoxide and zinc aluminate were dissolved in 500ml of anhydrous isopropanol solution, and then 2% polyvinyl acetal was added to prepare a sol with a P:Al:Zn molar ratio of 6:2:1. After stirring the sol for 1 hour at a stirring speed of 150 rpm, adding 10% calcium nitrate and 20% calcium nitrate to obtain a mixed slurry, the mixed slurry can be prepared. After the prepared mixed slurry was continuously stirred for 15 hours, it was put into an oil bath at 80° C. and stirred for another 40 minutes to form a gel. Finally, put the gel into the sintering furnace, raise the temperature from 50°C to 700°C at a heating rate of 10°C / min, and keep it for 3 hours. The resulting ultrafine powder is a low-melting cosolvent.

[0061] Preparation and application of low melting point cosolvent in ceramicized polyolefin cable

[0062] A ceramicized polyolefin composition, comprising the following components by weight (%): ...

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Abstract

The invention discloses preparation of a low-melting-point cosolvent and application of the low-melting-point cosolvent in preparation of a ceramic polyolefin cable, and relates to the field of preparation and application of new materials. The preparation method comprises the following steps: dissolving phosphorus pentoxide and zinc aluminate in 200-500ml of an anhydrous alcohol solution, and then adding a stabilizer to prepare sol with the molar ratio of P to Al to Zn being (4-6) to 2 to 1; phosphorus pentoxide colloid is utilized, a sol-gel method is adopted to prepare a low-melting-point cosolvent, the ceramic forming temperature can be reduced to 250 DEG C, when polyolefin is just decomposed, quick ceramization can be achieved, continuous combustion is prevented, the cable line integrity is effectively protected, the structure stabilizer can ensure that a three-dimensional net structure is formed in the ceramization process, and the service life of the cable line is prolonged. And a good self-supporting and high-strength ceramic structure layer is formed.

Description

technical field [0001] The invention relates to the field of preparation and application of new materials, in particular to the preparation of a low melting point cosolvent and its application in the preparation of ceramicized polyolefin cables. Background technique [0002] With the rapid development of the wire and cable industry and the improvement of environmental awareness, the ceramicized polyolefin cable will form a self-supporting ceramic shell when it is burned, which plays a role in flame retardant protection, and there is no smoke and dust during the combustion process. The gas is released and thus develops rapidly. [0003] However, in the current ceramic formulation, low-melting glass is mainly used as a co-solvent, and its melting temperature is generally above 500 degrees. Although the melting temperature of inorganic fillers can be reduced, it does not match the decomposition temperature of the substrate and cannot effectively protect the group. The material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K3/32C08L23/08C08L23/00C08L27/18C08K3/34C08K3/26C08K7/08
CPCC08K3/32C08L23/0853C08L2201/02C08L2203/202C08L23/0815C08L23/00C08L27/18C08K3/34C08K3/26C08K7/08C08K3/346
Inventor 孔利权柯志欣取利群谢代辉贺超武陈帅雨
Owner GUANGDONG LINE GIANT CABLE