阅读说明：本技术 电缆包覆材料及其制备方法 (Cable cladding material and preparation method thereof ) 是由 赵明哲 米春海 吴天凤 周余 于 2019-12-04 设计创作，主要内容包括：本发明公开了一种电缆包覆材料及其制备方法,所述制备方法包括：将丁腈橡胶、三元乙丙橡胶、高密度聚乙烯、聚丙烯树脂、炭黑、高岭土、增塑剂、硫化剂、偶联剂和防老剂混合,得到混合物料M；将混合物料M进行混合,得到混合物料N；将混合物料N加入双螺杆挤出机中,经挤出成型,得到电缆包覆材料。解决了传统的电缆包覆材料的机械强度较低,抗拉强度不高、断裂伸长率较低的问题。(The invention discloses a cable coating material and a preparation method thereof, wherein the preparation method comprises the following steps: mixing nitrile rubber, ethylene propylene diene monomer, high-density polyethylene, polypropylene resin, carbon black, kaolin, a plasticizer, a vulcanizing agent, a coupling agent and an anti-aging agent to obtain a mixed material M; mixing the mixed material M to obtain a mixed material N; and adding the mixed material N into a double-screw extruder, and performing extrusion molding to obtain the cable coating material. The problems of low mechanical strength, low tensile strength and low elongation at break of the traditional cable coating material are solved.)

1. A preparation method of a cable coating material is characterized by comprising the following steps:

(1) mixing nitrile rubber, ethylene propylene diene monomer, high-density polyethylene, polypropylene resin, carbon black, kaolin, a plasticizer, a vulcanizing agent, a coupling agent and an anti-aging agent to obtain a mixed material M;

(2) mixing the mixed material M to obtain a mixed material N;

(3) and adding the mixed material N into a double-screw extruder, and performing extrusion molding to obtain the cable coating material.

2. The preparation method according to claim 1, wherein the amount of the coupling agent is 1 to 2 parts by weight and the amount of the anti-aging agent is 2 to 3 parts by weight, based on 100 parts by weight of the nitrile rubber and the ethylene propylene diene rubber, the amount of the high density polyethylene is 10 to 30 parts by weight, the amount of the polypropylene resin is 5 to 15 parts by weight, the amount of the carbon black is 1 to 4 parts by weight, the amount of the kaolin is 2 to 7 parts by weight, the amount of the plasticizer is 2 to 4 parts by weight, the amount of the vulcanizing agent is 1 to 2 parts by weight, and the amount of the coupling agent is 1 to 2 parts by weight.

3. The method of claim 1, wherein the plasticizer is one or more of dimethyl phthalate, diethyl phthalate, di-n-butyl phthalate, and dioctyl phthalate.

4. The production method according to claim 1, wherein the vulcanizing agent is dicumyl peroxide or triallyl cyanurate.

5. The production method according to claim 1, wherein the coupling agent is one or more of a silane coupling agent KH550, a silane coupling agent KH570 and a silane coupling agent KH 792.

6. The production method according to claim 1, wherein the antioxidant is antioxidant 4010 or antioxidant CPPD.

7. The production method according to claim 1, wherein in the step (2), the conditions for mixing include: mixing is carried out at 80-100 ℃ under the conditions of 800-.

8. The production method according to claim 1, wherein, in the step (3), the conditions of extrusion molding include: the extrusion temperature is 200-210 ℃, and the rotation speed of the screw is 300-400 rpm.

9. A cable covering material, characterized in that it is produced by the process according to any one of claims 1 to 8.

Technical Field

The invention relates to the field of cable manufacturing, in particular to a cable coating 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 mechanical strength, low tensile strength and low elongation at break.

Disclosure of Invention

The invention aims to provide a cable coating material and a preparation method thereof, and solves the problems of low mechanical strength, low tensile strength and low elongation at break of the traditional cable coating material.

In order to achieve the above object, the present invention provides a method for preparing a cable covering material, the method comprising:

(1) mixing nitrile rubber, ethylene propylene diene monomer, high-density polyethylene, polypropylene resin, carbon black, kaolin, a plasticizer, a vulcanizing agent, a coupling agent and an anti-aging agent to obtain a mixed material M;

(2) mixing the mixed material M to obtain a mixed material N;

(3) and adding the mixed material N into a double-screw extruder, and performing extrusion molding to obtain the cable coating material.

The invention also provides a cable coating material, which is prepared by the preparation method.

Through the technical scheme, the invention provides a cable coating material and a preparation method thereof, wherein the preparation method comprises the following steps: mixing nitrile rubber, ethylene propylene diene monomer, high-density polyethylene, polypropylene resin, carbon black, kaolin, a plasticizer, a vulcanizing agent, a coupling agent and an anti-aging agent to obtain a mixed material M; mixing the mixed material M to obtain a mixed material N; adding the mixed material N into a double-screw extruder, and performing extrusion molding to obtain a cable coating material; according to the cable coating material and the preparation method thereof provided by the invention, through the synergistic effect of different raw materials, the prepared cable coating material has excellent mechanical strength, so that the tensile strength and the elongation at break are higher.

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

Detailed Description

The following describes in detail specific embodiments of the present invention. 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 endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For ranges of values, between the endpoints of each of the ranges and the individual points, and between the individual points may be combined with each other to give one or more new ranges of values, and these ranges of values should be considered as specifically disclosed herein.

The invention provides a preparation method of a cable coating material, which comprises the following steps:

(1) mixing nitrile rubber, ethylene propylene diene monomer, high-density polyethylene, polypropylene resin, carbon black, kaolin, a plasticizer, a vulcanizing agent, a coupling agent and an anti-aging agent to obtain a mixed material M;

(2) mixing the mixed material M to obtain a mixed material N;

(3) and adding the mixed material N into a double-screw extruder, and performing extrusion molding to obtain the cable coating material.

In a preferred embodiment of the present invention, in order to further improve the tensile strength and elongation at break of the cable covering material, the amount of the high density polyethylene is 10 to 30 parts by weight, the amount of the polypropylene resin is 5 to 15 parts by weight, the amount of the carbon black is 1 to 4 parts by weight, the amount of the kaolin is 2 to 7 parts by weight, the amount of the plasticizer is 2 to 4 parts by weight, the amount of the vulcanizing agent is 1 to 2 parts by weight, the amount of the coupling agent is 1 to 2 parts by weight, and the amount of the anti-aging agent is 2 to 3 parts by weight, relative to 100 parts by weight of the nitrile rubber and the ethylene propylene diene rubber.

In a preferred embodiment of the present invention, in order to further improve the tensile strength and elongation at break of the cable covering material, the plasticizer is one or more of dimethyl phthalate, diethyl phthalate, di-n-butyl phthalate and dioctyl phthalate.

In a preferred embodiment of the invention, in order to further increase the tensile strength and elongation at break of the cable coating material, the vulcanizing agent is dicumyl peroxide or triallyl cyanurate.

In a preferred embodiment of the present invention, in order to further improve the tensile strength and elongation at break of the cable covering material, the coupling agent is one or more of a silane coupling agent KH550, a silane coupling agent KH570 and a silane coupling agent KH 792.

In a preferred embodiment of the present invention, the antioxidant is antioxidant 4010 or antioxidant CPPD, in order to further improve the tensile strength and elongation at break of the cable covering material.

In a preferred embodiment of the present invention, in order to further improve the tensile strength and elongation at break of the cable covering material, in step (2), the mixing conditions include: mixing is carried out at 80-100 ℃ under the conditions of 800-.

In a preferred embodiment of the present invention, in order to further improve the tensile strength and the elongation at break of the cable covering material, in the step (3), the extrusion molding conditions include: the extrusion temperature is 200-210 ℃, and the rotation speed of the screw is 300-400 rpm.

The invention also provides a cable coating material, which is prepared by the preparation method.

The present invention will be described in detail below by way of examples.