A radiation-proof high flame-retardant special optical cable and its preparation method

Abstract

The present application provides a radiation-proof high-flame-retardant special optical cable, which includes at least one cable core, and the outside of the cable core is sequentially wrapped with a flame-resistant and radiation-resistant layer, at least one ceramic fiber protective layer, and a flame-resistant and wear-resistant layer, wherein the The flame-resistant and radiation-resistant layer is a polyetheretherketone layer with a thickness of 0.1-0.2mm, and the flame-resistant and wear-resistant layer includes at least one layer of carbon fiber / carbon nanotube modified polytetrafluoroethylene / polyether ether with a thickness of 0.1-0.6mm Ketone layer. The high-radiation-proof and high-flame-retardant special optical cable of the present invention has excellent flame resistance and high temperature resistance, and can effectively resist radiation aging, has good wear resistance and corrosion resistance, and is simple in structure and easy to prepare, and is suitable for use in nuclear power plants, chemical industry factories and other extremely harsh environments.

Description

technical field

[0001] The invention of the present application belongs to the communication optical cable technology, and in particular relates to a radiation-proof and highly flame-retardant special optical cable. Background technique

[0002] Due to the particularity of its environment, nuclear power plants have strict requirements on the performance of cables such as high temperature resistance, radiation protection, and aging resistance. Currently, mineral insulated cables are mainly used in domestic nuclear power plants. Mineral insulated cables have excellent heat resistance and flame resistance, but their long-term use in the high-radiation environment of nuclear power plants will easily age and become brittle, which will bring certain safety hazards. In addition, due to the complex operating environment of high salt spray and vibration in nuclear power plants, higher requirements are placed on the corrosion resistance, wear resistance and shock resistance of cables....

Examples

Embodiment 1

[0029] A radiation-proof and highly flame-retardant special optical cable, which includes a single optical cable core, which is successively wrapped with a polyimide insulating layer with a thickness of 30 μm, and two layers of polyetheretherketone flame-resistant polyether ether ketone with a thickness of 0.2 mm. A radiation protection layer, a ceramic fiber protective layer with a thickness of 0.6mm and a carbon fiber / carbon nanotube modified polytetrafluoroethylene / polyether ether ketone layer with a thickness of 0.3mm, wherein the carbon fiber / carbon nanotube The modified polytetrafluoroethylene / polyetheretherketone layer contains 2wt.% carbon fibers with a length of 0.01mm, 0.1wt.% carbon nanotubes and 10wt.% polytetrafluoroethylene and the melt index of polyetheretherketone is 60g / 10min.

[0030] The preparation method is as follows: select a single optical cable core that meets the requirements, coat its surface with a polyimide insulating layer with a thickness of 30 μ...

Embodiment 2

[0033] A radiation-proof high flame-retardant special optical cable, which includes a single optical cable core, which is successively wrapped with a polyimide insulating layer with a thickness of 30 μm, and two layers of polyetheretherketone flame-resistant polyether ether ketone with a thickness of 0.1 mm. Radiation protection layer, one layer of aluminum silicate ceramic fiber protection layer with a thickness of 0.4mm and two carbon fiber / carbon nanotube modified polytetrafluoroethylene / polyetheretherketone layers with a thickness of 0.1mm, wherein the carbon fiber / The polytetrafluoroethylene / polyetheretherketone layer modified by carbon nanotubes contains 1wt.% carbon fiber with a length of 0.03mm, 1wt.% carbon nanotubes and 5wt.% polytetrafluoroethylene and the melting of polyetheretherketone The index is 120g / 10min.

[0034] The preparation method is as follows: select a single optical cable core that meets the requirements, coat its surface with a polyimide insulating...

Embodiment 3

[0037] A radiation-proof high flame-retardant special optical cable, which includes a single optical cable core, which is successively wrapped with a polyimide insulating layer with a thickness of 40 μm, and a single layer of polyether ether ketone with a thickness of 0.2 mm. Radiation layer, a protective layer of aluminum silicate ceramic fiber with a thickness of 0.2mm and a carbon fiber / carbon nanotube modified polytetrafluoroethylene / polyether ether ketone layer with a thickness of 0.6mm, wherein the carbon fiber / carbon The nanotube-modified polytetrafluoroethylene / polyetheretherketone layer contains 5wt.% carbon fibers with a length of 0.07mm, 0.5wt.% carbon nanotubes and 15wt.% polytetrafluoroethylene and the melting of polyetheretherketone The index is 150g / 10min.

[0038] The preparation method is as follows: select a single optical cable core that meets the requirements, coat its surface with a polyimide insulating layer with a thickness of 40 μm, and then coat it wit...

technical field

[0001] The invention of the present application belongs to the communication optical cable technology, and in particular relates to a radiation-proof and highly flame-retardant special optical cable. Background technique

[0002] Due to the particularity of its environment, nuclear power plants have strict requirements on the performance of cables such as high temperature resistance, radiation protection, and aging resistance. Currently, mineral insulated cables are mainly used in domestic nuclear power plants. Mineral insulated cables have excellent heat resistance and flame resistance, but their long-term use in the high-radiation environment of nuclear power plants will easily age and become brittle, which will bring certain safety hazards. In addition, due to the complex operating environment of high salt spray and vibration in nuclear power plants, higher requirements are placed on the corrosion resistance, wear resistance and shock resistance of cables....

Examples

Embodiment 1

[0029] A radiation-proof and highly flame-retardant special optical cable, which includes a single optical cable core, which is successively wrapped with a polyimide insulating layer with a thickness of 30 μm, and two layers of polyetheretherketone flame-resistant polyether ether ketone with a thickness of 0.2 mm. A radiation protection layer, a ceramic fiber protective layer with a thickness of 0.6mm and a carbon fiber / carbon nanotube modified polytetrafluoroethylene / polyether ether ketone layer with a thickness of 0.3mm, wherein the carbon fiber / carbon nanotube The modified polytetrafluoroethylene / polyetheretherketone layer contains 2wt.% carbon fibers with a length of 0.01mm, 0.1wt.% carbon nanotubes and 10wt.% polytetrafluoroethylene and the melt index of polyetheretherketone is 60g / 10min.

[0030] The preparation method is as follows: select a single optical cable core that meets the requirements, coat its surface with a polyimide insulating layer with a thickness of 30 μ...

Embodiment 2

[0033] A radiation-proof high flame-retardant special optical cable, which includes a single optical cable core, which is successively wrapped with a polyimide insulating layer with a thickness of 30 μm, and two layers of polyetheretherketone flame-resistant polyether ether ketone with a thickness of 0.1 mm. Radiation protection layer, one layer of aluminum silicate ceramic fiber protection layer with a thickness of 0.4mm and two carbon fiber / carbon nanotube modified polytetrafluoroethylene / polyetheretherketone layers with a thickness of 0.1mm, wherein the carbon fiber / The polytetrafluoroethylene / polyetheretherketone layer modified by carbon nanotubes contains 1wt.% carbon fiber with a length of 0.03mm, 1wt.% carbon nanotubes and 5wt.% polytetrafluoroethylene and the melting of polyetheretherketone The index is 120g / 10min.

[0034] The preparation method is as follows: select a single optical cable core that meets the requirements, coat its surface with a polyimide insulating...

Embodiment 3

[0037] A radiation-proof high flame-retardant special optical cable, which includes a single optical cable core, which is successively wrapped with a polyimide insulating layer with a thickness of 40 μm, and a single layer of polyether ether ketone with a thickness of 0.2 mm. Radiation layer, a protective layer of aluminum silicate ceramic fiber with a thickness of 0.2mm and a carbon fiber / carbon nanotube modified polytetrafluoroethylene / polyether ether ketone layer with a thickness of 0.6mm, wherein the carbon fiber / carbon The nanotube-modified polytetrafluoroethylene / polyetheretherketone layer contains 5wt.% carbon fibers with a length of 0.07mm, 0.5wt.% carbon nanotubes and 15wt.% polytetrafluoroethylene and the melting of polyetheretherketone The index is 150g / 10min.

[0038] The preparation method is as follows: select a single optical cable core that meets the requirements, coat its surface with a polyimide insulating layer with a thickness of 40 μm, and then coat it wit...