125 DEG C PVC energy storage cable material and preparation method thereof

Abstract

The invention discloses a 125-degree PVC energy storage cable material and a preparation method thereof. The 125-degree PVC energy storage cable material comprises polyvinyl chloride resin, a plasticizer, a stabilizer, a lubricant, a flame retardant, an inorganic filler, a scraping and grinding agent, soybean oil and argil. In order to solve the problems that an irradiation crosslinking low-smoke halogen-free material is long in delivery time, not resistant to scraping, unstable in physical performance and wire diameter and high in production cost, the invention provides the 125-DEG C PVC energy storage cable material and the preparation method, the PVC energy storage cable material guarantees the stable physical performance, improves the weather resistance of the cable material, is more resistant to scraping, and is suitable for industrial production. The preparation method provided by the invention has good processability, does not need irradiation, saves time and production cost, and improves production efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of wires and cables, and relates to PVC energy storage cable materials, and in particular to a 125-degree PVC energy storage cable material with low cost and more stable physical properties and a preparation method thereof. Background Art

[0002] Plastics used for insulation and sheathing of wires and cables are commonly known as cable materials. Existing vehicle wire and cable materials use halogen-containing flame retardants, which release a large amount of toxic and harmful gases when burning. They are harmful to human health after inhalation and are not conducive to vehicle fire escape and environmental protection requirements.

[0003] At present, most 125-degree energy storage power cords on the market use irradiated cross-linked low-smoke halogen-free materials. Due to material defects and low hardness, the pores generated during the processing too quickly will affect the physical properties; or the processing is too slow and the plasticization is inconsistent, resulting in unstable wire diameters. After the power cord is made, the outer surface is not scratch-resistant and defective products are easily produced. The power cord also needs to be outsourced for irradiation, and the delivery time is difficult to determine. In addition, due to fluctuations in irradiation doses, the physical properties of the power cord are also unstable. At the same time, due to the high material cost, production costs are difficult to control.

[0004] Patent CN2016107812998 discloses a non-irritating, bio-resistant, cold-resistant, oil-resistant and flame-retardant polyvinyl chloride cable material, which utilizes the non-irritating and compatibility of polyethylene glycol to eliminate the odor generated during the preparation process and some odors of the material itself, and adds plasticizer, Elvaloy (a terpolymer of vinyl acetate, ethylene and hydroxyl) and nitrile rubber powder during the preparation process, and utilizes nitrile rubber powder to assist Elvaloy in preventing the plasticizer from precipitating, thereby improving the material's oil resistance and cold resistance. However, the amount of plasticizer added is relatively large, which affects the excellent performance of the material itself. Summary of the invention

[0005] In order to solve the problems of long delivery period, poor scratch resistance, unstable physical properties and wire diameter, and high production cost of radiation cross-linked low-smoke halogen-free materials, the present invention provides a 125-degree PVC energy storage cable material and a preparation method. The PVC energy storage cable material of the present invention ensures stable physical properties, improves the weather resistance of the cable material, and is more scratch-resistant. The preparation method of the present invention has good processing performance, does not require irradiation, saves time and production costs, and improves production efficiency.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] The invention provides a 125-degree PVC energy storage cable material. The raw materials of the PVC energy storage cable material include, by weight: 100 parts of polyvinyl chloride resin, 35 parts to 50 parts of plasticizer, 8 parts to 14 parts of stabilizer, 0.3 parts to 0.8 parts of lubricant, 2 parts to 4 parts of flame retardant, 5 parts to 10 parts of inorganic filler, 0.3 parts to 1.0 parts of scraping agent, 5 parts to 8 parts of soybean oil and 10 parts to 15 parts of clay.

[0008] As a preferred embodiment of the present invention, the degree of polymerization of the polyvinyl chloride resin is 1400-1700.

[0009] As a preferred embodiment of the present invention, the plasticizer is a polyester plasticizer or a TOTM plasticizer.

[0010] As a preferred embodiment of the present invention, the stabilizer includes a calcium zinc stabilizer, a rare earth stabilizer or an organic tin stabilizer.

[0011] As a preferred embodiment of the present invention, the lubricant includes PE wax, paraffin or stearate.

[0012] As a preferred embodiment of the present invention, the flame retardant includes antimony trioxide, phosphorus flame retardant or zinc borate.

[0013] As a preferred embodiment of the present invention, the inorganic filler includes calcium carbonate, talc or aluminum-magnesium compounds.

[0014] As a preferred embodiment of the present invention, the epoxide value of the soybean oil is 4-7%.

[0015] The present invention also provides a method for preparing the above-mentioned 125-degree PVC energy storage cable material, the preparation method comprising the following steps:

[0016] 1) weighing raw materials, putting polyvinyl chloride resin, plasticizer, stabilizer, lubricant, inorganic filler, wear-resistant agent, clay and flame retardant into a mixer; putting the obtained mixture into an internal mixer and mixing evenly;

[0017] 2) Single screw extrusion, the single screw temperature is: 165℃-175℃ in the first zone, 185℃-195℃ in the second zone, 190℃-200℃ in the third zone, 195℃-205℃ in the fourth zone, the die head is 195℃-205℃, the die neck is 195℃-205℃, and 125 degree PVC energy storage cable material is obtained.

[0018] As a preferred solution of the present invention, the banburying temperature is 160° C. and the banburying time is 650 s.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1) In the present invention, the plasticizer can withstand high temperatures of 125°C and low temperatures of -40°C, and the stabilizer can meet the thermal aging conditions of 150°C and 10 days. After the power cord is manufactured, no irradiation is required, saving time and cost.

[0021] 2) In the production process of the cable material of the present invention, an internal mixer process is adopted to increase the mixing time and the mixing temperature, eliminate the generation of pores, and ensure the stability of the physical properties of the rubber material and good processing performance.

[0022] 3) The cable material of the present invention does not require irradiation during the production process, thus avoiding attenuation of physical properties due to irradiation and improving the weather resistance of the wire.

[0023] 4) The present invention adds abrasives, so that the appearance of the manufactured electric wire is more scratch-resistant and not easily scratched.

[0024] 5) The PVC energy storage cable material of the present invention ensures stable physical properties, improves the weather resistance of the cable material, and is more scratch-resistant. The preparation method of the present invention has good processing performance, does not require irradiation, saves time and production costs, improves production efficiency, increases production capacity, avoids pores, uneven plasticization, and makes the cable material easier to process. DETAILED DESCRIPTION

[0025] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] The invention provides a 125-degree PVC energy storage cable material. The raw materials of the PVC energy storage cable material include, by weight: 100 parts of polyvinyl chloride resin, 35 parts to 50 parts of plasticizer, 8 parts to 14 parts of stabilizer, 0.3 parts to 0.8 parts of lubricant, 2 parts to 4 parts of flame retardant, 5 parts to 10 parts of inorganic filler, 0.3 parts to 1.0 parts of scraping agent, 5 parts to 8 parts of soybean oil and 10 parts to 15 parts of clay.

[0027] In one embodiment of the present invention, the degree of polymerization of the polyvinyl chloride resin is 1400-1700.

[0028] Preferably, the polyvinyl chloride resin has a degree of polymerization of 1600 and is purchased from Formosa Plastics, model S-80.

[0029] In one embodiment of the present invention, the plasticizer is a polyester plasticizer or a TOTM plasticizer.

[0030] Preferably, the plasticizer is an imported polyester plasticizer, imported from Japan, model 796.

[0031] In one embodiment of the present invention, the stabilizer includes a calcium zinc stabilizer, a rare earth stabilizer or an organic tin stabilizer.

[0032] Preferably, the stabilizer is a calcium zinc stabilizer, available from Chemistry, model 2290.

[0033] In one embodiment of the present invention, the lubricant includes PE wax, paraffin or stearate.

[0034] Preferably, the lubricant is PE wax, available from Honeywell, model AC-6A.

[0035] In one embodiment of the present invention, the flame retardant includes antimony trioxide, a phosphorus flame retardant or zinc borate.

[0036] Preferably, the flame retardant is antimony trioxide, purchased from Wellda.

[0037] In one embodiment of the present invention, the inorganic filler includes calcium carbonate, talc or aluminum-magnesium compounds.

[0038] Preferably, the inorganic filler is calcium carbonate, purchased from Shengtai.

[0039] In one embodiment of the present invention, the epoxide value of the soybean oil is 4-7%.

[0040] Preferably, the soybean oil has an epoxide value of 6% and is purchased from Helifeng.

[0041] In one embodiment of the present invention, the clay is purchased from Vaseline, model AT-01.

[0042] In one embodiment of the present invention, the scraping agent is EVA, purchased from Dexinyuan, model OV-215.

[0043] The present invention also provides a method for preparing the above-mentioned 125-degree PVC energy storage cable material, the preparation method comprising the following steps:

[0044] 1) weighing raw materials, putting polyvinyl chloride resin, plasticizer, stabilizer, lubricant, inorganic filler, wear-resistant agent, clay and flame retardant into a mixer; putting the obtained mixture into an internal mixer and mixing evenly;

[0045] 2) Single screw extrusion, the single screw temperature is: 165℃-175℃ in the first zone, 185℃-195℃ in the second zone, 190℃-200℃ in the third zone, 195℃-205℃ in the fourth zone, the die head is 195℃-205℃, the die neck is 195℃-205℃, and 125 degree PVC energy storage cable material is obtained.

[0046] As a preferred solution of the present invention, the banburying temperature is 160° C. and the banburying time is 650 s.

[0047] The present invention reduces the raw material cost of the cable material, increases production output, and reduces the overall cost by 30% by improving the formula of the cable material; the power cord of the present invention does not require irradiation, shortens the delivery cycle, reduces transportation and processing costs, improves work efficiency, and the physical properties of the power cord are more stable.

[0048] The production of the present invention adopts a honey mixer process, the mixing time is changed from 450 seconds of ordinary materials to 650 seconds, and the mixing temperature is changed from 150° C. to 160° C., thereby improving the production capacity and avoiding pores and uneven plasticization, making the cable material easier to process.

[0049] Example 1

[0050] The 125-degree PVC energy storage cable material provided in this embodiment comprises, by weight, 100 parts of polyvinyl chloride resin powder S-80, 50 parts of plasticizer 796, 8 parts of stabilizer 2290, 0.6 parts of lubricant AC-6A, 2 parts of flame retardant antimony trioxide, 5 parts of inorganic filler calcium carbonate, 0.4 parts of scraping agent OV-215, 6 parts of soybean oil (epoxy value 6%) and 12.5 parts of clay AT-01.

[0051] The 125-degree PVC energy storage cable material was prepared according to the above preparation method.

[0052] Example 2

[0053] The 125-degree PVC energy storage cable material provided in this embodiment comprises, by weight, 100 parts of polyvinyl chloride resin powder S-80, 35 parts of plasticizer 796, 14 parts of stabilizer 2290, 0.3 parts of lubricant AC-6A, 4 parts of flame retardant antimony trioxide, 10 parts of inorganic filler calcium carbonate, 1.0 part of scraping agent OV-215, 8 parts of soybean oil (epoxy value 6%) and 15 parts of clay AT-01.

[0054] The 125-degree PVC energy storage cable material was prepared according to the above preparation method.

[0055] Example 3

[0056] The 125-degree PVC energy storage cable material provided in this embodiment comprises, by weight, 100 parts of polyvinyl chloride resin powder S-80, 45 parts of plasticizer 796, 10 parts of stabilizer 2290, 0.8 parts of lubricant AC-6A, 3 parts of flame retardant antimony trioxide, 10 parts of inorganic filler calcium carbonate, 0.3 parts of scraping agent OV-215, 5 parts of soybean oil (epoxy value 6%) and 10 parts of clay AT-01.

[0057] The 125-degree PVC energy storage cable material was prepared according to the above preparation method.

[0058] The power cable made of the 125-degree PVC energy storage cable material obtained in Examples 1-3 was tested, and the test data is shown in Table 1.

[0059] Table 1. Test data

[0060]

[0061]

[0062] The PVC energy storage cable material of the present invention ensures stable physical properties, improves the weather resistance of the cable material, and is more scratch-resistant. The preparation method of the present invention has good processing performance, does not require irradiation, saves time and production costs, improves production efficiency, increases production capacity, avoids pores, uneven plasticization, and makes the cable material easier to process.

[0063] The above is only a preferred embodiment of the present invention, and is not any formal or substantial limitation of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and supplements without departing from the method of the present invention, and these improvements and supplements should also be regarded as the protection scope of the present invention. Any technician familiar with this profession, without departing from the spirit and scope of the present invention, can make some changes, modifications and evolutions of the technical content disclosed above, which are equivalent embodiments of the present invention; at the same time, any changes, modifications and evolutions of any equivalent changes made to the above embodiments based on the essential technology of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A 125 degree PVC energy storage cable material, characterized in that: The raw materials of the PVC energy storage cable material include, by weight: 100 parts of polyvinyl chloride resin, 35 parts to 50 parts of plasticizer, 8 parts to 14 parts of stabilizer, 0.3 parts to 0.8 parts of lubricant, 2 parts to 4 parts of flame retardant, 5 parts to 10 parts of inorganic filler, 0.3 parts to 1.0 parts of scraper, 5 parts to 8 parts of soybean oil and 10 parts to 15 parts of clay.

2. A 125 degree PVC energy storage cable material according to claim 1, characterized in that: The polymerization degree of the polyvinyl chloride resin is 1400-1700.

3. A 125 degree PVC energy storage cable material according to claim 1, characterized in that: The plasticizer is polyester plasticizer or TOTM plasticizer.

4. A 125 degree PVC energy storage cable material according to claim 1, characterized in that: The stabilizer includes a calcium zinc stabilizer, a rare earth stabilizer or an organic tin stabilizer.

5. A 125 degree PVC energy storage cable material according to claim 1, characterized in that: The lubricant includes PE wax, paraffin or stearate.

6. A 125 degree PVC energy storage cable material according to claim 1, characterized in that: The flame retardant includes antimony trioxide, pure antimony, phosphorus flame retardant or zinc borate.

7. A 125 degree PVC energy storage cable material according to claim 1, characterized in that: The inorganic filler includes calcium carbonate, talc or aluminum-magnesium compounds.

8. A 125 degree PVC energy storage cable material according to claim 1, characterized in that: The epoxy value of the soybean oil is 4-7%.

9. A method for preparing a 125 degree PVC energy storage cable material as claimed in any one of claims 1 to 8, characterized in that: The preparation method comprises the following steps: 1) weighing raw materials, putting polyvinyl chloride resin, plasticizer, stabilizer, lubricant, inorganic filler, wear-resistant agent, clay and flame retardant into a mixer; putting the obtained mixture into an internal mixer and mixing evenly; 2) Single screw extrusion, the single screw temperature is: 165℃-175℃ in the first zone, 185℃-195℃ in the second zone, 190℃-200℃ in the third zone, 195℃-205℃ in the fourth zone, the die head is 195℃-205℃, the die neck is 195℃-205℃, and 125 degree PVC energy storage cable material is obtained.

10. The method for preparing the 125 degree PVC energy storage cable material according to claim 9, characterized in that: The mixing temperature is 160° C., and the mixing time is 650 s.

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