Preparation method of low-temperature-resistant anti-freezing PVC cable material

Abstract

The invention relates to a preparation method of a low-temperature-resistant anti-freezing PVC cable material, and belongs to the technical field of power cables. According to the cold-resistant PVC cable material disclosed by the invention, the cold resistance of the PVC cable material at-40 DEG C is realized by cooperating the low-polymerization-degree PVC with the cold-resistant plasticizer dioctyl sebacate, the nitrile rubber powder, the diisononyl phthalate and the polytetrafluoroethylene, and the dispersity and the uniformity of the material are remarkably improved and the mechanical property of the material is improved through ultrasonic-assisted mixing.

Description

Technical Field

[0001] The invention belongs to the technical field of power cables and relates to a method for preparing a low-temperature resistant and antifreeze PVC cable material. Background Art

[0002] Polyvinyl chloride (PVC) is widely used in the manufacture of cables due to its excellent physical and chemical properties. PVC material has good insulation, chemical corrosion resistance and flame retardancy, which makes it an ideal choice for cable sheaths and insulation layers. In addition, PVC is relatively low in cost, easy to process and shape, and its flexibility and weather resistance can be adjusted by adding different plasticizers and stabilizers. However, in low temperature environments, traditional PVC materials will become brittle and hard, affecting the flexibility and service life of the cable. Therefore, it is particularly important to develop PVC cables with antifreeze properties for cables used in cold areas or in low temperature environments. Antifreeze PVC cables can maintain good mechanical and electrical properties under low temperature conditions, ensuring that the cables can still operate safely and reliably in extreme environments.

[0003] Existing antifreeze PVC cable technology still has some shortcomings in improving low-temperature performance. First, although the flexibility of PVC can be improved to a certain extent by adding plasticizers and modifiers, the effects of these modification methods are often not significant enough under extreme low temperature conditions. Many cables will still become stiff when the temperature drops below zero, affecting their installation and use in cold environments. In addition, traditional plasticizers have limited effectiveness at low temperatures and cannot provide long-term and stable cold resistance, which makes the cables prone to cracking or damage during repeated low-temperature cycles. Secondly, while existing technologies improve low-temperature flexibility, they may lead to compromises in other performance indicators of the cable, such as a decrease in wear resistance and mechanical strength. This performance imbalance affects the reliability and durability of the cable in extreme environments, making it difficult to meet the needs of modern industry for high-performance cables. Summary of the invention

[0004] The invention relates to a method for preparing a low temperature resistant and antifreeze PVC cable material, and belongs to the technical field of power cables. The invention uses low polymerization degree PVC in coordination with cold resistant plasticizers dioctyl sebacate, nitrile rubber powder, diisononyl phthalate and polytetrafluoroethylene to achieve -40°C cold resistance of the PVC cable material, and through ultrasonic assisted mixing, significantly improves the dispersion and uniformity of the material and improves its mechanical properties.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A method for preparing a low-temperature resistant and antifreeze PVC cable material comprises the following steps:

[0007] (1) Add PVC, filler, flame retardant and toughening agent into a mixer and mix at 140-160° C. for 5-10 minutes;

[0008] (2) adding a cold-resistant plasticizer, a stabilizer, an antioxidant and an anti-aging agent and mixing at 120-160° C. for 10-20 minutes to obtain a mixed material;

[0009] (3) placing the mixed material in an ultrasonic treatment device and ultrasonically treating it at a frequency of 20 kHz to 40 kHz for 10 to 30 minutes;

[0010] (4) The ultrasonicated material is fed into a twin-screw extruder for plastication for 2-8 minutes and then extruded into granules. The plastication temperature is 140-180° C. and the screw speed is 200-300 rpm.

[0011] As a preferred technical solution of the present invention, the mass ratio of the PVC, cold-resistant plasticizer, toughening agent, flame retardant, filler, stabilizer, antioxidant and anti-aging agent is 100:36-90:10-20:15-25:4-8:4-8:0.1-2:0.1-2.

[0012] As a preferred technical solution of the present invention, the cold-resistant plasticizer includes dioctyl sebacate, nitrile rubber powder, diisononyl phthalate and polytetrafluoroethylene, and the mass ratio is 10-30:5-15:20-40:1-5.

[0013] As a preferred technical solution of the present invention, the toughening agent is at least one of a polyurethane elastomer and an ethylene-vinyl acetate copolymer.

[0014] As a preferred technical solution of the present invention, the flame retardant is one or more of antimony trioxide, aluminum hydroxide, and magnesium hydroxide.

[0015] As a preferred technical solution of the present invention, the filler is nano-calcium carbonate modified by a silane coupling agent.

[0016] As a preferred technical solution of the present invention, the stabilizer is a calcium zinc stabilizer.

[0017] As a preferred technical solution of the present invention, the antioxidant is bisphenol A.

[0018] As a preferred technical solution of the present invention, the anti-aging agent is UV-531.

[0019] Beneficial effects of the present invention:

[0020] (1) Dioctyl sebacate can reduce the glass transition temperature of PVC and improve the flexibility and elasticity of the material; nitrile rubber powder is dispersed in the PVC matrix to form a network structure, which improves the impact resistance and cold resistance of the material; diisononyl phthalate can reduce the migration of plasticizers, further improve the softness and low temperature resistance of PVC, and increase the service life of the cable; the dispersion of polytetrafluoroethylene in PVC can improve the wear resistance and anti-aging properties of the material, and at the same time provide additional lubrication effect at low temperatures to prevent the brittle cracking of the material, and synergistically significantly improve the low temperature and antifreeze performance of the PVC cable; the present invention combines four cold-resistant materials to enable the PVC cable to maintain excellent impact resistance and low-temperature tensile properties at -40°C.

[0021] (2) The present invention can significantly improve the dispersibility and uniformity of the material and improve the mechanical properties of the PVC cable through ultrasonic-assisted mixing. DETAILED DESCRIPTION

[0022] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in combination with the embodiments.

[0023] In the following examples and comparative examples, the PVC polymerization degree is 1300; polytetrafluoroethylene is purchased from Kangjin Chemical Co., Ltd. with the brand name PTFE; nitrile rubber powder is purchased from Stabilized Jiaxin Material Technology Co., Ltd. with the brand name GM50; polyurethane elastomer is purchased from Kundu Industrial Co., Ltd. with the product number 2590; ethylene-vinyl acetate copolymer is purchased from Shunou Plastic Chemical Co., Ltd. with the product number 28150; silane coupling agent is purchased from Huanzheng Chemical Co., Ltd. with the product model KH-172; calcium zinc stabilizer is purchased from Jinheng Blue Ocean Technology Co., Ltd. with the product model JH918;

[0024] Example 1

[0025] A method for preparing a low-temperature resistant and antifreeze PVC cable material comprises the following steps:

[0026] (1) Add PVC, filler, flame retardant and toughening agent into a mixer and mix at 150° C. for 10 minutes;

[0027] (2) adding a cold-resistant plasticizer, a stabilizer, an antioxidant and an anti-aging agent and mixing at 140° C. for 20 minutes to obtain a mixed material;

[0028] (3) placing the mixed material in an ultrasonic treatment device and ultrasonically treating it at a frequency of 30 kHz for 20 minutes;

[0029] (4) feeding the ultrasonic material into a twin-screw extruder for plastication for 5 minutes and then extruding and granulating, wherein the plastication temperature is 160° C. and the screw speed is 300 rpm;

[0030] As a preferred technical solution of the present invention, the mass ratio of the PVC, cold-resistant plasticizer, toughening agent, flame retardant, filler, stabilizer, antioxidant and anti-aging agent is 100:63:15:20:6:6:1:1.

[0031] The cold-resistant plasticizer comprises dioctyl sebacate, nitrile rubber powder, diisononyl phthalate and polytetrafluoroethylene, and the mass ratio is 20:10:30:3.

[0032] The toughening agent is a mixture of polyurethane elastomer and ethylene-vinyl acetate copolymer in a ratio of 1:1.

[0033] The flame retardant is a mixture of antimony trioxide, aluminum hydroxide and magnesium hydroxide in a ratio of 1:1:1.

[0034] The filler is silane coupling agent modified nano calcium carbonate, and the preparation method is: disperse the nano calcium carbonate in anhydrous ethanol, ultrasonicate for 15 minutes, add the silane coupling agent, heat to 80°C, stir for 30 minutes, cool, filter, wash with anhydrous ethanol, and dry in a 60°C vacuum oven to constant weight to obtain the silane coupling agent modified nano calcium carbonate.

[0035] The mass ratio of the nano calcium carbonate to the silane coupling agent is 100:5.

[0036] The stabilizer is a calcium zinc stabilizer.

[0037] The antioxidant is bisphenol A.

[0038] The anti-aging agent is UV-531.

[0039] Example 2

[0040] A method for preparing a low-temperature resistant and antifreeze PVC cable material comprises the following steps:

[0041] (1) Add PVC, filler, flame retardant and toughening agent into a mixer and mix at 160° C. for 5 minutes;

[0042] (2) adding a cold-resistant plasticizer, a stabilizer, an antioxidant and an anti-aging agent and mixing at 160° C. for 10 minutes to obtain a mixed material;

[0043] (3) placing the mixed material in an ultrasonic treatment device and ultrasonically treating it at a frequency of 20 kHz for 20 minutes;

[0044] (4) feeding the ultrasonic material into a twin-screw extruder for plastication for 5 minutes and then extruding and granulating, wherein the plastication temperature is 160° C. and the screw speed is 200 rpm;

[0045] As a preferred technical solution of the present invention, the mass ratio of the PVC, cold-resistant plasticizer, toughening agent, flame retardant, filler, stabilizer, antioxidant and anti-aging agent is 100:60:20:15:4:8:2:2.

[0046] The cold-resistant plasticizer comprises dioctyl sebacate, nitrile rubber powder, diisononyl phthalate and polytetrafluoroethylene, and the mass ratio is 20:15:20:5.

[0047] The toughening agent is a polyurethane elastomer.

[0048] The flame retardant is antimony trioxide.

[0049] The filler is silane coupling agent modified nano calcium carbonate, and the preparation method is: disperse the nano calcium carbonate in anhydrous ethanol, ultrasonicate for 15 minutes, add the silane coupling agent, heat to 80°C, stir for 30 minutes, cool, filter, wash with anhydrous ethanol, and dry in a 60°C vacuum oven to constant weight to obtain the silane coupling agent modified nano calcium carbonate.

[0050] The mass ratio of the nano calcium carbonate to the silane coupling agent is 100:5.

[0051] The stabilizer is a calcium zinc stabilizer.

[0052] The antioxidant is bisphenol A.

[0053] The anti-aging agent is UV-531.

[0054] Comparative Example 1

[0055] A method for preparing a low-temperature resistant and antifreeze PVC cable material comprises the following steps:

[0056] (1) Add PVC, filler, flame retardant and toughening agent into a mixer and mix at 150° C. for 10 minutes;

[0057] (2) adding a cold-resistant plasticizer, a stabilizer, an antioxidant and an anti-aging agent and mixing at 140° C. for 20 minutes to obtain a mixed material;

[0058] (3) placing the mixed material in an ultrasonic treatment device and ultrasonically treating it at a frequency of 30 kHz for 20 minutes;

[0059] (4) feeding the ultrasonic material into a twin-screw extruder for plastication for 5 minutes and then extruding and granulating, wherein the plastication temperature is 160° C. and the screw speed is 300 rpm;

[0060] As a preferred technical solution of the present invention, the mass ratio of the PVC, cold-resistant plasticizer, toughening agent, flame retardant, filler, stabilizer, antioxidant and anti-aging agent is 100:63:15:20:6:6:1:1.

[0061] The cold-resistant plasticizer comprises nitrile rubber powder, diisononyl phthalate and polytetrafluoroethylene in a mass ratio of 30:30:3.

[0062] The toughening agent is a mixture of polyurethane elastomer and ethylene-vinyl acetate copolymer in a ratio of 1:1.

[0063] The flame retardant is a mixture of antimony trioxide, aluminum hydroxide and magnesium hydroxide in a ratio of 1:1:1.

[0064] The filler is silane coupling agent modified nano calcium carbonate, and the preparation method is: disperse the nano calcium carbonate in anhydrous ethanol, ultrasonicate for 15 minutes, add the silane coupling agent, heat to 80°C, stir for 30 minutes, cool, filter, wash with anhydrous ethanol, and dry in a 60°C vacuum oven to constant weight to obtain the silane coupling agent modified nano calcium carbonate.

[0065] The mass ratio of the nano calcium carbonate to the silane coupling agent is 100:5.

[0066] The stabilizer is a calcium zinc stabilizer.

[0067] The antioxidant is bisphenol A.

[0068] The anti-aging agent is UV-531.

[0069] Comparative Example 2

[0070] A method for preparing a low-temperature resistant and antifreeze PVC cable material comprises the following steps:

[0071] (1) Add PVC, filler, flame retardant and toughening agent into a mixer and mix at 150° C. for 10 minutes;

[0072] (2) adding a cold-resistant plasticizer, a stabilizer, an antioxidant and an anti-aging agent and mixing at 140° C. for 20 minutes to obtain a mixed material;

[0073] (3) placing the mixed material in an ultrasonic treatment device and ultrasonically treating it at a frequency of 30 kHz for 20 minutes;

[0074] (4) feeding the ultrasonic material into a twin-screw extruder for plastication for 5 minutes and then extruding and granulating, wherein the plastication temperature is 160° C. and the screw speed is 300 rpm;

[0075] As a preferred technical solution of the present invention, the mass ratio of the PVC, cold-resistant plasticizer, toughening agent, flame retardant, filler, stabilizer, antioxidant and anti-aging agent is 100:63:15:20:6:6:1:1.

[0076] The cold-resistant plasticizer comprises dioctyl sebacate, diisononyl phthalate and polytetrafluoroethylene in a mass ratio of 20:40:3.

[0077] The toughening agent is a mixture of polyurethane elastomer and ethylene-vinyl acetate copolymer in a ratio of 1:1.

[0078] The flame retardant is a mixture of antimony trioxide, aluminum hydroxide and magnesium hydroxide in a ratio of 1:1:1.

[0079] The filler is silane coupling agent modified nano calcium carbonate, and the preparation method is: disperse the nano calcium carbonate in anhydrous ethanol, ultrasonicate for 15 minutes, add the silane coupling agent, heat to 80°C, stir for 30 minutes, cool, filter, wash with anhydrous ethanol, and dry in a 60°C vacuum oven to constant weight to obtain the silane coupling agent modified nano calcium carbonate.

[0080] The mass ratio of the nano calcium carbonate to the silane coupling agent is 100:5.

[0081] The stabilizer is a calcium zinc stabilizer.

[0082] The antioxidant is bisphenol A.

[0083] The anti-aging agent is UV-531.

[0084] Comparative Example 3

[0085] A method for preparing a low-temperature resistant and antifreeze PVC cable material comprises the following steps:

[0086] (1) Add PVC, filler, flame retardant and toughening agent into a mixer and mix at 150° C. for 10 minutes;

[0087] (2) adding a cold-resistant plasticizer, a stabilizer, an antioxidant and an anti-aging agent and mixing at 140° C. for 20 minutes to obtain a mixed material;

[0088] (3) placing the mixed material in an ultrasonic treatment device and ultrasonically treating it at a frequency of 30 kHz for 20 minutes;

[0089] (4) feeding the ultrasonic material into a twin-screw extruder for plastication for 5 minutes and then extruding and granulating, wherein the plastication temperature is 160° C. and the screw speed is 300 rpm;

[0090] As a preferred technical solution of the present invention, the mass ratio of the PVC, cold-resistant plasticizer, toughening agent, flame retardant, filler, stabilizer, antioxidant and anti-aging agent is 100:63:15:20:6:6:1:1.

[0091] The cold-resistant plasticizer comprises dioctyl sebacate, nitrile rubber powder and polytetrafluoroethylene in a mass ratio of 20:10:33.

[0092] The toughening agent is a mixture of polyurethane elastomer and ethylene-vinyl acetate copolymer in a ratio of 1:1.

[0093] The flame retardant is a mixture of antimony trioxide, aluminum hydroxide and magnesium hydroxide in a ratio of 1:1:1.

[0094] The filler is silane coupling agent modified nano calcium carbonate, and the preparation method is: disperse the nano calcium carbonate in anhydrous ethanol, ultrasonicate for 15 minutes, add the silane coupling agent, heat to 80°C, stir for 30 minutes, cool, filter, wash with anhydrous ethanol, and dry in a 60°C vacuum oven to constant weight to obtain the silane coupling agent modified nano calcium carbonate.

[0095] The mass ratio of the nano calcium carbonate to the silane coupling agent is 100:5.

[0096] The stabilizer is a calcium zinc stabilizer.

[0097] The antioxidant is bisphenol A.

[0098] The anti-aging agent is UV-531.

[0099] Comparative Example 4

[0100] A method for preparing a low-temperature resistant and antifreeze PVC cable material comprises the following steps:

[0101] (1) Add PVC, filler, flame retardant and toughening agent into a mixer and mix at 150° C. for 10 minutes;

[0102] (2) adding a cold-resistant plasticizer, a stabilizer, an antioxidant and an anti-aging agent and mixing at 140° C. for 20 minutes to obtain a mixed material;

[0103] (3) placing the mixed material in an ultrasonic treatment device and ultrasonically treating it at a frequency of 30 kHz for 20 minutes;

[0104] (4) feeding the ultrasonic material into a twin-screw extruder for plastication for 5 minutes and then extruding and granulating, wherein the plastication temperature is 160° C. and the screw speed is 300 rpm;

[0105] As a preferred technical solution of the present invention, the mass ratio of the PVC, cold-resistant plasticizer, toughening agent, flame retardant, filler, stabilizer, antioxidant and anti-aging agent is 100:63:15:20:6:6:1:1.

[0106] The cold-resistant plasticizer comprises dioctyl sebacate, nitrile rubber powder and diisononyl phthalate, and the mass ratio is 23:10:30.

[0107] The toughening agent is a mixture of polyurethane elastomer and ethylene-vinyl acetate copolymer in a ratio of 1:1.

[0108] The flame retardant is a mixture of antimony trioxide, aluminum hydroxide and magnesium hydroxide in a ratio of 1:1:1.

[0109] The filler is silane coupling agent modified nano calcium carbonate, and the preparation method is: disperse the nano calcium carbonate in anhydrous ethanol, ultrasonicate for 15 minutes, add the silane coupling agent, heat to 80°C, stir for 30 minutes, cool, filter, wash with anhydrous ethanol, and dry in a 60°C vacuum oven to constant weight to obtain the silane coupling agent modified nano calcium carbonate.

[0110] The mass ratio of the nano calcium carbonate to the silane coupling agent is 100:5.

[0111] The stabilizer is a calcium zinc stabilizer.

[0112] The antioxidant is bisphenol A.

[0113] The anti-aging agent is UV-531.

[0114] Comparative Example 5

[0115] A method for preparing a low-temperature resistant and antifreeze PVC cable material comprises the following steps:

[0116] (1) Add PVC, filler, flame retardant and toughening agent into a mixer and mix at 150° C. for 10 minutes;

[0117] (2) adding a cold-resistant plasticizer, a stabilizer, an antioxidant and an anti-aging agent and mixing at 140° C. for 20 minutes to obtain a mixed material;

[0118] (3) feeding the mixed material into a twin-screw extruder for plastication for 5 minutes and then extruding and granulating, wherein the plastication temperature is 160° C. and the screw speed is 300 rpm;

[0119] As a preferred technical solution of the present invention, the mass ratio of the PVC, cold-resistant plasticizer, toughening agent, flame retardant, filler, stabilizer, antioxidant and anti-aging agent is 100:63:15:20:6:6:1:1.

[0120] The cold-resistant plasticizer comprises dioctyl sebacate, nitrile rubber powder, diisononyl phthalate and polytetrafluoroethylene, and the mass ratio is 20:10:30:3.

[0121] The toughening agent is a mixture of polyurethane elastomer and ethylene-vinyl acetate copolymer in a ratio of 1:1.

[0122] The flame retardant is a mixture of antimony trioxide, aluminum hydroxide and magnesium hydroxide in a ratio of 1:1:1.

[0123] The filler is silane coupling agent modified nano calcium carbonate, and the preparation method is: disperse the nano calcium carbonate in anhydrous ethanol, ultrasonicate for 15 minutes, add the silane coupling agent, heat to 80°C, stir for 30 minutes, cool, filter, wash with anhydrous ethanol, and dry in a 60°C vacuum oven to constant weight to obtain the silane coupling agent modified nano calcium carbonate.

[0124] The mass ratio of the nano calcium carbonate to the silane coupling agent is 100:5.

[0125] The stabilizer is a calcium zinc stabilizer.

[0126] The antioxidant is bisphenol A.

[0127] The anti-aging agent is UV-531.

[0128] Performance Test:

[0129] Tensile strength test: Examples 1-2 and Comparative Examples 1-5 were tested according to GB / T8804.2-2003, with the unit being Mpa;

[0130] Elongation at break test: Examples 1-2 and Comparative Examples 1-5 were tested according to GB / T8323.2-2008, with the unit being %;

[0131] Shock catalytic temperature test: According to the requirements of GB / T5470 and GB / T8815-2008 standards, cold resistance tests were performed on Examples 1-2 and Comparative Examples 1-5, with the unit being °C.

[0132] Tensile strength(Mpa) Elongation at break (%) Impact embrittlement temperature(℃) Example 1 19.4 361 -45 Example 2 19.2 358 -43 Comparative Example 1 17.6 304 -25 Comparative Example 2 17.8 301 -31 Comparative Example 3 16.9 313 -29 Comparative Example 4 18.1 318 -32 Comparative Example 5 18.5 332 -38

[0133] It can be seen from the test results that the cold resistance of the PVC cable material obtained in Example 1-2 exceeds -40°C. The combination of dioctyl sebacate, nitrile rubber powder, diisononyl phthalate and polytetrafluoroethylene enables the PVC cable to maintain excellent impact resistance and low-temperature tensile properties at -40°C, and ultrasonic-assisted mixing improves the dispersion and uniformity of the material, thereby improving the mechanical properties and functional characteristics of the PVC cable.

[0134] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any indirect modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A method for preparing a low temperature resistant and antifreeze PVC cable material, characterized in that: The following steps are involved: (1) Add PVC, filler, flame retardant and toughening agent into a mixer and mix at 140-160° C. for 5-10 minutes; (2) adding a cold-resistant plasticizer, a stabilizer, an antioxidant and an anti-aging agent and mixing at 120-160° C. for 10-20 minutes to obtain a mixed material; (3) placing the mixed material in an ultrasonic treatment device and ultrasonically treating it at a frequency of 20 kHz to 40 kHz for 10 to 30 minutes; (4) The ultrasonicated material is fed into a twin-screw extruder for plastication for 2-8 minutes and then extruded into granules. The plastication temperature is 140-180° C. and the screw speed is 200-300 rpm.

2. The method for preparing a low temperature resistant and antifreeze PVC cable material according to claim 1, characterized in that: The mass ratio of the PVC, cold-resistant plasticizer, toughening agent, flame retardant, filler, stabilizer, antioxidant and anti-aging agent is 100:36-90:10-20:15-25:4-8:4-8:0.1-2:0.1-2.

3. The method for preparing a low temperature resistant and antifreeze PVC cable material according to claim 1, characterized in that: The cold-resistant plasticizer comprises dioctyl sebacate, nitrile rubber powder, diisononyl phthalate and polytetrafluoroethylene, and the mass ratio is 10-30:5-15:20-40:1-5.

4. The method for preparing a low temperature resistant and antifreeze PVC cable material according to claim 1, characterized in that: The toughening agent is at least one of polyurethane elastomer and ethylene-vinyl acetate copolymer.

5. The method for preparing a low temperature resistant and antifreeze PVC cable material according to claim 1, characterized in that: The flame retardant is one or more of antimony trioxide, aluminum hydroxide and magnesium hydroxide.

6. The method for preparing a low temperature resistant and antifreeze PVC cable material according to claim 1, characterized in that: The filler is nano calcium carbonate modified by a silane coupling agent.

7. The method for preparing a low temperature resistant and antifreeze PVC cable material according to claim 1, characterized in that: The stabilizer is a calcium zinc stabilizer.

8. The method for preparing a low temperature resistant and antifreeze PVC cable material according to claim 1, characterized in that: The antioxidant is bisphenol A.

9. The method for preparing a low temperature resistant and antifreeze PVC cable material according to claim 1, characterized in that: The anti-aging agent is UV-531.