阅读说明：本技术 耐高温电缆绝缘材料及其制备方法 (High-temperature-resistant cable insulating material and preparation method thereof ) 是由 赵明哲 孙静 王秘 周蕾 于 2019-12-17 设计创作，主要内容包括：本发明公开了一种耐高温电缆绝缘材料及其制备方法,所述制备方法包括：将丁腈橡胶、天然橡胶、聚碳酸酯、三氧化二铝纤维、玻璃纤维、钛白粉、稀土氧化物、高岭土、促进剂和防老剂混合后,经混炼得到坯料M,将坯料M进硫化和挤出成型后得到耐高温电缆绝缘材料。解决了传统的电缆包覆材料的耐高温能力不高,在作业环境中容易损坏的问题。(The invention discloses a high-temperature-resistant cable insulating material and a preparation method thereof, wherein the preparation method comprises the following steps: mixing nitrile butadiene rubber, natural rubber, polycarbonate, aluminum oxide fiber, glass fiber, titanium dioxide, rare earth oxide, kaolin, an accelerator and an anti-aging agent, mixing to obtain a blank M, and vulcanizing and extruding the blank M to obtain the high-temperature-resistant cable insulation material. The cable coating material solves the problems that the traditional cable coating material has low high-temperature resistance and is easy to damage in the operating environment.)

1. A preparation method of a high-temperature-resistant cable insulating material is characterized by comprising the following steps: mixing nitrile butadiene rubber, natural rubber, polycarbonate, aluminum oxide fiber, glass fiber, titanium dioxide, rare earth oxide, kaolin, an accelerator and an anti-aging agent, mixing to obtain a blank M, and vulcanizing and extruding the blank M to obtain the high-temperature-resistant cable insulation material.

2. The preparation method according to claim 1, wherein the natural rubber is used in an amount of 80 to 90 parts by weight, the polycarbonate is used in an amount of 30 to 50 parts by weight, the alumina fiber is used in an amount of 10 to 15 parts by weight, the glass fiber is used in an amount of 1 to 10 parts by weight, the titanium dioxide is used in an amount of 1 to 4 parts by weight, the rare earth oxide is used in an amount of 2 to 5 parts by weight, the kaolin is used in an amount of 2 to 5 parts by weight, the accelerator is used in an amount of 1 to 2 parts by weight, and the antioxidant is used in an amount of 1 to 2 parts by weight, relative to 100 parts by weight of the nitrile rubber.

3. The method of claim 1, wherein the accelerator is one or more of triethylene diamine, dibutyltin dilaurate, and stannous octoate.

4. The production method according to claim 1, wherein the antioxidant is antioxidant PPD or antioxidant CPPD.

5. The preparation method of claim 1, wherein the mixing conditions comprise heating to 50-60 deg.C, mixing for 5-10min, heating to 90-100 deg.C, and further mixing for 2-5 min.

6. The production method according to claim 1, wherein the vulcanization conditions include: and (3) placing the blank N in a flat vulcanizing machine to vulcanize for 2-3min at the temperature of 132-150 ℃.

7. A high-temperature-resistant cable insulation material, which is prepared by the preparation method of any one of claims 1 to 6.

Technical Field

The invention relates to the field of cables, in particular to a high-temperature-resistant cable insulating material and a preparation method thereof.

Background

The cable sheath is the outermost layer of the cable and serves as the most important barrier for protecting the safety of the internal structure in the cable, and the cable is protected from mechanical damage during and after installation; cable jackets are not intended to replace the reinforcing armour inside the cable, but they may provide a relatively high level of but limited protection, and in addition, cable jackets also provide moisture, chemical, uv and ozone protection. At present, the traditional cable coating material has low high-temperature resistance and is easy to damage in the operating environment.

Disclosure of Invention

The invention aims to provide a high-temperature-resistant cable insulating material and a preparation method thereof, and solves the problems that the traditional cable coating material is low in high-temperature-resistant capability and easy to damage in an operating environment.

In order to achieve the above object, the present invention provides a method for preparing a high temperature resistant cable insulation material, the method comprising: mixing nitrile butadiene rubber, natural rubber, polycarbonate, aluminum oxide fiber, glass fiber, titanium dioxide, rare earth oxide, kaolin, an accelerator and an anti-aging agent, mixing to obtain a blank M, and vulcanizing and extruding the blank M to obtain the high-temperature-resistant cable insulation material.

The invention also provides a high-temperature-resistant cable insulating material, which is prepared by the preparation method.

According to the technical scheme, the invention provides a high-temperature-resistant cable insulating material and a preparation method thereof, wherein the preparation method comprises the following steps: mixing nitrile butadiene rubber, natural rubber, polycarbonate, aluminum oxide fiber, glass fiber, titanium dioxide, rare earth oxide, kaolin, an accelerator and an anti-aging agent, mixing to obtain a blank M, and vulcanizing and extruding the blank M to obtain a high-temperature-resistant cable insulation material; through the synergistic effect of the raw materials, the prepared high-temperature-resistant cable insulating material has excellent high-temperature resistance and is suitable for wide popularization and application.

Additional features and advantages of the invention will be set forth in the detailed description which follows.

Detailed Description

The present invention will be described in detail with reference to specific embodiments thereof. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

The invention provides a preparation method of a high-temperature-resistant cable insulating material, which comprises the following steps: mixing nitrile butadiene rubber, natural rubber, polycarbonate, aluminum oxide fiber, glass fiber, titanium dioxide, rare earth oxide, kaolin, an accelerator and an anti-aging agent, mixing to obtain a blank M, and vulcanizing and extruding the blank M to obtain the high-temperature-resistant cable insulation material.

In a preferred embodiment of the present invention, the natural rubber is used in an amount of 80 to 90 parts by weight, the polycarbonate is used in an amount of 30 to 50 parts by weight, the alumina fiber is used in an amount of 10 to 15 parts by weight, the glass fiber is used in an amount of 1 to 10 parts by weight, the titanium dioxide is used in an amount of 1 to 4 parts by weight, the rare earth oxide is used in an amount of 2 to 5 parts by weight, the kaolin is used in an amount of 2 to 5 parts by weight, the accelerator is used in an amount of 1 to 2 parts by weight, and the antioxidant is used in an amount of 1 to 2 parts by weight, relative to 100 parts by weight of the nitrile rubber.

In a preferred embodiment of the invention, the accelerator is one or more of triethylenediamine, dibutyltin dilaurate and stannous octoate.

In a preferred embodiment of the present invention, the antioxidant is antioxidant PPD or antioxidant CPPD.

In a preferred embodiment of the invention, the mixing conditions comprise heating to 50-60 ℃ for 5-10min, then heating to 90-100 ℃, and continuing mixing for 2-5 min.

In a preferred embodiment of the invention, the conditions of vulcanization include: and (3) placing the blank N in a flat vulcanizing machine to vulcanize for 2-3min at the temperature of 132-150 ℃.

The invention also provides a high-temperature-resistant cable insulating material, which is prepared by the preparation method.

The details are described below with reference to specific examples.