Polycaprolactam high-temperature-resistant modified material for cables and preparation method of modified material

Abstract

The invention discloses a polycaprolactam high-temperature-resistant modified material for cables and a preparation method thereof. The material is prepared from the following raw materials in parts by weight: 15-20 parts of filler, 0.3-0.8 parts of composite heat stabilizer, 15-20 parts of 25 parts of polyacrylonitrile, 45-65 parts of polycaprolactam, 0.3-0.8 parts of coupling agent, 0.1-0.3 parts of crosslinking agent; adding composite heat stabilizer to polycaprolactam and controlling the degree of polymerization of polycaprolactam The cross-linking modification under certain conditions significantly improves the high temperature resistance of polycaprolactam and retains good processability. Using the polycaprolactam material in cables can significantly increase the high temperature resistance of cables.

Description

technical field

[0001] The invention relates to the field of cable materials, in particular to a polycaprolactam high temperature resistant modified material for cables and a preparation method thereof. Background technique

[0002] The cable is made of one or more wires twisted to form a conductor core, and then a corresponding insulating layer is applied to the conductor, and a sealed sheath is formed on the outside. It is mainly composed of a core, an insulating layer, and a shielding layer. and sheath layer. The cable occupies less ground and space; the power supply is safe and reliable, and the possibility of electric shock is small; it is beneficial to improve the power factor of the power system; the operation and maintenance work is simple and convenient; it is beneficial to beautify the city and has many advantages such as confidentiality. It is widely used in life. and all areas of production. The function of the cable sheath layer is to seal and protect the cabl...

Examples

Embodiment 1

[0025] (1) 12 parts of diatomite with a particle size of 0.1 μm and 6 parts of talc powder with a particle size of 0.1 μm were treated with 0.5 parts of methacryloxysilane coupling agent;

[0026] (2) Combine diatomite, talcum powder, 0.45 parts of calcium stearate, 0.15 parts of dibenzoylmethane, 20 parts of polyacrylonitrile with a polymerization degree of 230, and 55 parts of polyacrylonitrile with a polymerization degree of 1200 polycaprolactam and 0.2 parts of benzoyl peroxide are uniformly mixed and then extruded with an extruder to obtain a polycaprolactam high temperature resistant modified material for cables.

Embodiment 2

[0028] (1) Treat 10 parts of diatomite with a particle size of 0.5 μm and 5 parts of talc powder with a particle size of 0.01 μm with 0.3 parts of methacryloxysilane coupling agent;

[0029] (2) Combine diatomite, talcum powder, 0.2 parts of calcium stearate, 0.1 parts of dibenzoylmethane, 15 parts of polyacrylonitrile with a polymerization degree of 150, and 65 parts of polyacrylonitrile with a polymerization degree of 1600 polycaprolactam and 0.1 part of benzoyl peroxide are evenly mixed and then extruded with an extruder to obtain a polycaprolactam high temperature resistant modified material for cables.

Embodiment 3

[0031] (1) Treat 15 parts of diatomite with a particle size of 0.01 μm and 5 parts of talc powder with a particle size of 0.2 μm with 0.8 parts of methacryloxysilane coupling agent;

[0032] (2) Mix the coupling-treated filler with 0.6 parts of calcium stearate and 0.2 parts of dibenzoylmethane, 25 parts of polyacrylonitrile with a polymerization degree of 280, 45 parts of polycaprolactam with a polymerization degree of 800, 0.3 Parts of benzoyl peroxide are uniformly mixed and then extruded with an extruder to obtain a polycaprolactam high temperature resistant modified material for cables.

technical field

[0001] The invention relates to the field of cable materials, in particular to a polycaprolactam high temperature resistant modified material for cables and a preparation method thereof. Background technique

[0002] The cable is made of one or more wires twisted to form a conductor core, and then a corresponding insulating layer is applied to the conductor, and a sealed sheath is formed on the outside. It is mainly composed of a core, an insulating layer, and a shielding layer. and sheath layer. The cable occupies less ground and space; the power supply is safe and reliable, and the possibility of electric shock is small; it is beneficial to improve the power factor of the power system; the operation and maintenance work is simple and convenient; it is beneficial to beautify the city and has many advantages such as confidentiality. It is widely used in life. and all areas of production. The function of the cable sheath layer is to seal and protect the cabl...

Examples

Embodiment 1

[0025] (1) 12 parts of diatomite with a particle size of 0.1 μm and 6 parts of talc powder with a particle size of 0.1 μm were treated with 0.5 parts of methacryloxysilane coupling agent;

[0026] (2) Combine diatomite, talcum powder, 0.45 parts of calcium stearate, 0.15 parts of dibenzoylmethane, 20 parts of polyacrylonitrile with a polymerization degree of 230, and 55 parts of polyacrylonitrile with a polymerization degree of 1200 polycaprolactam and 0.2 parts of benzoyl peroxide are uniformly mixed and then extruded with an extruder to obtain a polycaprolactam high temperature resistant modified material for cables.

Embodiment 2

[0028] (1) Treat 10 parts of diatomite with a particle size of 0.5 μm and 5 parts of talc powder with a particle size of 0.01 μm with 0.3 parts of methacryloxysilane coupling agent;

[0029] (2) Combine diatomite, talcum powder, 0.2 parts of calcium stearate, 0.1 parts of dibenzoylmethane, 15 parts of polyacrylonitrile with a polymerization degree of 150, and 65 parts of polyacrylonitrile with a polymerization degree of 1600 polycaprolactam and 0.1 part of benzoyl peroxide are evenly mixed and then extruded with an extruder to obtain a polycaprolactam high temperature resistant modified material for cables.

Embodiment 3

[0031] (1) Treat 15 parts of diatomite with a particle size of 0.01 μm and 5 parts of talc powder with a particle size of 0.2 μm with 0.8 parts of methacryloxysilane coupling agent;

[0032] (2) Mix the coupling-treated filler with 0.6 parts of calcium stearate and 0.2 parts of dibenzoylmethane, 25 parts of polyacrylonitrile with a polymerization degree of 280, 45 parts of polycaprolactam with a polymerization degree of 800, 0.3 Parts of benzoyl peroxide are uniformly mixed and then extruded with an extruder to obtain a polycaprolactam high temperature resistant modified material for cables.