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CN-121975251-A - Corrosion-resistant cable sheath material and preparation method thereof

CN121975251ACN 121975251 ACN121975251 ACN 121975251ACN-121975251-A

Abstract

The invention relates to a corrosion-resistant cable sheath material and a preparation method thereof, and relates to the technical field of cable materials, wherein the corrosion-resistant cable sheath material comprises, by weight, 95-105 parts of a base material, 5-10 parts of polyvinylpyrrolidone, 10-18 parts of modified zinc oxide, 1-2 parts of an antioxidant, 0.4-0.8 part of a vulcanizing agent and 4-8 parts of a plasticizer. Compared with the prior art, the invention has the advantages that the specific modified zinc oxide and the polyvinylpyrrolidone with a proper K value range are mainly introduced, the components are synergistic, the corrosion resistance stability of the material is obviously improved, the service life of the cable is prolonged, and the use requirement of the submarine cable sheath field is met.

Inventors

  • LEI QUANZHI
  • XIE SHENG
  • LI ZHENGQIU

Assignees

  • 成都宏鑫源新材料有限公司

Dates

Publication Date
20260505
Application Date
20260409

Claims (10)

  1. 1. The corrosion-resistant cable sheath material is characterized by comprising the following raw materials in parts by weight: 95-105 parts of base material, 5-10 parts of polyvinylpyrrolidone, 10-18 parts of modified zinc oxide, 1-2 parts of antioxidant, 0.4-0.8 part of vulcanizing agent and 4-8 parts of plasticizer; the base material comprises polyvinyl chloride, polyethylene and ethylene propylene diene monomer; the K value of the polyvinylpyrrolidone is 40-60; the modified zinc oxide comprises a first modified zinc oxide and a second modified zinc oxide; The first modified zinc oxide is obtained by modifying zinc oxide serving as a raw material by tetraphenylporphyrin; The second modified zinc oxide is obtained by modifying zinc oxide serving as a raw material by a fluorine-containing silane coupling agent with a general formula of C n F 2n+1 -Si(OR 1 ) 3 , wherein n is any natural number from 6 to 10, and R 1 is C1-C3 alkyl.
  2. 2. The corrosion-resistant cable sheath material according to claim 1, wherein the corrosion-resistant cable sheath material comprises the following raw materials in parts by weight: 100 parts of base stock, 7.8 parts of polyvinylpyrrolidone, 15 parts of modified zinc oxide, 1.5 parts of antioxidant, 0.6 part of vulcanizing agent and 6.5 parts of plasticizer.
  3. 3. The corrosion resistant cable sheath material of claim 1, wherein the weight ratio of polyvinyl chloride, polyethylene and ethylene propylene diene monomer is 100 (17-25): 5-13.
  4. 4. The corrosion resistant cable jacket material of claim 1, wherein the weight ratio of the first modified zinc oxide to the second modified zinc oxide is (5-10): 1-5.
  5. 5. The corrosion resistant cable sheath material of claim 1 or 4, wherein the weight ratio of the first modified zinc oxide to the second modified zinc oxide is 8:3.
  6. 6. The corrosion resistant cable sheath material of claim 5, wherein the preparation of the first modified zinc oxide comprises the following process: Adding tetraphenylporphyrin into dichloromethane, and stirring at room temperature to obtain a first solution; adding zinc oxide into methanol, and stirring at room temperature to obtain a second solution; Adding the second solution into the first solution, stirring for 24-48 hours at the temperature of 30-40 ℃, removing the solvent by reduced pressure rotary evaporation, and drying to obtain the first modified zinc oxide; wherein the molar ratio of the zinc oxide to the tetraphenylporphyrin is (8-12): 1.
  7. 7. The corrosion resistant cable sheath material of claim 5, wherein the preparation of the second modified zinc oxide comprises the following process: adding the fluorine-containing silane coupling agent into an alcohol-water mixed solution with the pH value of 4.0-4.5, stirring, then adding zinc oxide, heating, stirring, filtering and drying to obtain the second modified zinc oxide; Wherein the weight ratio of the zinc oxide to the fluorine-containing silane coupling agent to the alcohol-water mixed solution is 100 (5-10) (400-500), the working condition parameters of heating and stirring comprise that the temperature is 40-50 ℃ and the time is 90-120min, and the alcohol-water mixed solution is obtained by mixing ethanol with the volume ratio of (3-5): 1 with water and then adding acetic acid to regulate the pH.
  8. 8. The corrosion resistant cable sheath material according to claim 1, wherein the zinc oxide comprises rod-shaped zinc oxide, the polyvinylpyrrolidone comprises at least one of polyvinylpyrrolidone K40 and polyvinylpyrrolidone K60, the fluorine-containing silane coupling agent comprises 1H, 2H-perfluorohexyl triethoxysilane, 1H, 2H-perfluorooctyl triethoxysilane at least one of 1H, 2H-perfluorooctyl trimethoxysilane and 1H, 2H-perfluorodecyl triethoxysilane, the antioxidant comprises an antioxidant 1010, the vulcanizing agent comprises sulfur, and the plasticizer comprises at least one of dioctyl phthalate and dibutyl phthalate.
  9. 9. A method of preparing a corrosion resistant cable sheath material according to any one of claims 1 to 8, comprising the steps of: obtaining modified zinc oxide; Mixing the modified zinc oxide and the rest raw materials to obtain a mixture; and carrying out melt extrusion and granulation on the mixture to obtain the corrosion-resistant cable sheath material.
  10. 10. The method for preparing a corrosion resistant cable sheath material according to claim 9, wherein the temperature of the mixing is 125-135 ℃ and the temperature of the melt extrusion is 173-182 ℃.

Description

Corrosion-resistant cable sheath material and preparation method thereof Technical Field The invention relates to the technical field of cable materials, in particular to a corrosion-resistant cable sheath material and a preparation method thereof. Background In the technical field of cables, the cable sheath is used as a key part for protecting the internal structure of the cable, and the service life and the safety of the cable are directly influenced by the performance of the cable sheath. In particular to a cable used in severe environments such as submarine, etc., which has more severe requirements on the corrosion resistance of sheath materials. At present, the traditional cable sheath materials are various, and polyvinyl chloride (PVC), polyethylene (PE) and the like are common. The polyvinyl chloride sheath material has good mechanical property, electrical insulation property and processability, and has low cost, and can be widely applied to common cables. However, when facing to complex corrosion environments, the existing polyvinyl chloride sheath material has the defects of poor corrosion resistance and the like, and cannot meet the use requirements of severe environments such as submarine and the like. Disclosure of Invention In order to solve the problems, the invention provides a corrosion-resistant cable sheath material and a preparation method thereof. In a first aspect, the invention provides a corrosion-resistant cable sheath material, which comprises the following raw materials in parts by weight: 95-105 parts of base material, 5-10 parts of polyvinylpyrrolidone, 10-18 parts of modified zinc oxide, 1-2 parts of antioxidant, 0.4-0.8 part of vulcanizing agent and 4-8 parts of plasticizer; the base material comprises polyvinyl chloride, polyethylene and ethylene propylene diene monomer; the K value of the polyvinylpyrrolidone is 40-60; the modified zinc oxide comprises a first modified zinc oxide and a second modified zinc oxide; The first modified zinc oxide is obtained by modifying zinc oxide serving as a raw material by tetraphenylporphyrin; The second modified zinc oxide is obtained by modifying zinc oxide serving as a raw material by a fluorine-containing silane coupling agent with a general formula of C nF2n+1-Si(OR1)3, wherein n is any natural number from 6 to 10, and R 1 is C1-C3 alkyl. Further, the corrosion-resistant cable sheath material comprises the following raw materials in parts by weight: 100 parts of base stock, 7.8 parts of polyvinylpyrrolidone, 15 parts of modified zinc oxide, 1.5 parts of antioxidant, 0.6 part of vulcanizing agent and 6.5 parts of plasticizer. Further, the weight ratio of the polyvinyl chloride to the polyethylene to the ethylene propylene diene monomer is 100 (17-25) to 5-13. Further, the weight ratio of the first modified zinc oxide to the second modified zinc oxide is (5-10): 1-5. Further, the weight ratio of the first modified zinc oxide to the second modified zinc oxide is 8:3. Further, the preparation of the first modified zinc oxide comprises the following steps: Adding tetraphenylporphyrin into dichloromethane, and stirring at room temperature to obtain a first solution; adding zinc oxide into methanol, and stirring at room temperature to obtain a second solution; Adding the second solution into the first solution, stirring for 24-48 hours at the temperature of 30-40 ℃, removing the solvent by reduced pressure rotary evaporation, and drying to obtain the first modified zinc oxide; wherein the molar ratio of the zinc oxide to the tetraphenylporphyrin is (8-12): 1. Further, the preparation of the second modified zinc oxide comprises the following steps: adding the fluorine-containing silane coupling agent into an alcohol-water mixed solution with the pH value of 4.0-4.5, stirring, then adding zinc oxide, heating, stirring, filtering and drying to obtain the second modified zinc oxide; Wherein the weight ratio of the zinc oxide to the fluorine-containing silane coupling agent to the alcohol-water mixed solution is 100 (5-10) (400-500), the working condition parameters of heating and stirring comprise that the temperature is 40-50 ℃ and the time is 90-120min, and the alcohol-water mixed solution is obtained by mixing ethanol with the volume ratio of (3-5): 1 with water and then adding acetic acid to regulate the pH. Further, the zinc oxide comprises rod-shaped zinc oxide, the polyvinylpyrrolidone comprises at least one of polyvinylpyrrolidone K40 and polyvinylpyrrolidone K60, the fluorine-containing silane coupling agent comprises 1H, 2H-perfluorohexyl triethoxysilane, 1H, 2H-perfluorooctyl triethoxysilane at least one of 1H, 2H-perfluorooctyl trimethoxysilane and 1H, 2H-perfluorodecyl triethoxysilane, the antioxidant comprises an antioxidant 1010, the vulcanizing agent comprises sulfur, and the plasticizer comprises at least one of dioctyl phthalate and dibutyl phthalate. In a second aspect, based on the same inventive concept, the invention provide