Modified cable composite material

Abstract

The invention relates to the technical field of cable materials, in particular to a modified cable composite material, polyvinyl chloride is used as a main material, polyvinyl chloride, polypropylene, rubber and other polymers are subjected to blending modification, ceramic micro powder and a plasticizer are added, the weather resistance, toughness, mechanical strength, dielectric property and the like of the material are improved, and through a chemical grafting reaction, the composite material is prepared. Acrylonitrile butadiene styrene is grafted to improve the tensile strength of the material, a heat stabilizer and other assistants are further added into the mixed material to delay material aging, glass fibers are further added into the material to improve the wear resistance and strength of the material, and the newly generated composite material is good in comprehensive performance, wear resistance and weather resistance, high in mechanical strength and good in toughness. The service life is longer, and corrosion resistance is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of cable materials, in particular to a modified cable composite material. Background Art

[0002] The wire and cable industry is an important supporting industry for economic construction. It is widely used in various fields of the national economy, accounting for 1 / 4 of China's electrical industry and the second largest industry in the machinery industry after the automobile industry. Among them, the wires used in indoor decoration are mainly polyvinyl chloride insulated cables with a rated voltage of 450 / 750V and below, also known as cloth wires.

[0003] However, PVC cables are relatively weak in heat resistance and flexibility. They tend to become brittle in cold environments. They are also heavier and more difficult to recycle.

[0004] Therefore, it is necessary to design a polyvinyl chloride cable material with higher weather resistance and lighter weight. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a modified cable composite material, which is generated by mixing polyethylene and polypropylene. Various aspects of the composite material are improved and it is easier to recycle.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A modified cable composite material comprises polyvinyl chloride, polyethylene, polypropylene, an elastomeric material, an inorganic filler and an additive, wherein the ratio of the polyvinyl chloride, polyethylene and polypropylene is 4:3:3, the ratio of the elastomeric material is 15%, the ratio of the inorganic filler is 35%, and the ratio of the additive is 15%.

[0007] Optionally, in one embodiment of the present invention, the elastomeric material includes ethylene propylene rubber, silicone rubber and thermoplastic elastomer, the ethylene propylene rubber accounts for 5% of the total mass, the silicone rubber accounts for 3% of the total mass, and the thermoplastic elastomer accounts for 7% of the total mass.

[0008] Optionally, in one embodiment of the present invention, the inorganic filler includes glass fiber, talcum powder and clay, and the ratio of the glass fiber, talcum powder and clay is 3:2:2.

[0009] Optionally, in one embodiment of the present invention, the additives include a compatibilizer, a plasticizer, an antioxidant, a light stabilizer, a lubricant, a masterbatch and a flame retardant, the compatibilizer accounts for 5% of the total mass, the plasticizer accounts for 5% of the total mass, the antioxidant and the light stabilizer account for 1% of the total mass, the lubricant accounts for 1% of the total mass, the masterbatch accounts for 1% of the total mass, and the flame retardant accounts for 2% of the total mass.

[0010] Optionally, in one embodiment of the present invention, the mixed extrusion of the composite material is specifically carried out using a high-speed mixer and a twin-screw extruder, the operating time of the high-speed mixer is 5min-15min, the operating time of the twin-screw extruder is 2min-5min, and the processing temperature of the twin-screw extruder is 200℃-250℃.

[0011] Optionally, in one embodiment of the present invention, the flame retardant is magnesium hydroxide.

[0012] Optionally, in one embodiment of the present invention, the particle size of the polyvinyl chloride, polyethylene and polypropylene is ≤300 μm.

[0013] Beneficial effects of the present invention The modified cable composite material of the present invention is mainly composed of a mixture of polyvinyl chloride, polyethylene and polypropylene, and takes into account electrical properties, heat resistance, mechanical properties, chemical resistance and flame retardancy. Elastomer materials are also added to the mixture to improve chemical resistance, aging resistance, weather resistance and flexibility. Inorganic fillers are also added to enhance mechanical properties, heat resistance, dimensional stability and improve processing performance. The addition of various additives helps to improve the flame retardancy, aging resistance and flexibility of the material and improve processing performance. DETAILED DESCRIPTION

[0014] In order to further explain 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 as follows. Example

[0015] In order to improve the performance of existing cable materials, a modified cable composite material is designed. The specific scheme is as follows: A modified cable composite material comprises polyvinyl chloride, polyethylene, polypropylene, an elastomeric material, an inorganic filler and an additive, wherein the ratio of polyvinyl chloride, polyethylene and polypropylene is 4:3:3, the ratio of the elastomeric material is 15%, the ratio of the inorganic filler is 35%, and the ratio of the additive is 15%.

[0016] Polyvinyl chloride has good chemical resistance and flame retardancy, polyethylene has excellent toughness and cold resistance, and polypropylene has good strength and heat resistance. By mixing the three materials, a composite material with more balanced performance is prepared. The three materials need to be crushed before mixing. The crushing includes two stages: primary crushing and fine crushing. In the primary crushing stage, each material is crushed to a size between a few millimeters and a few centimeters. In the further crushing and granulation stage, each material is crushed to ≤300μm to ensure that the materials can be evenly distributed and fully mixed during subsequent mixing.

[0017] Elastomer materials include EPDM, silicone rubber and thermoplastic elastomer. The proportion of EPDM to the total mass is 5%, the proportion of silicone rubber to the total mass is 3%, and the proportion of thermoplastic elastomer to the total mass is 7%. Adding EPDM to the mixed material of polyvinyl chloride, polyethylene and polypropylene can improve the flexibility, weather resistance and chemical resistance of the mixture. Inorganic fillers include glass fiber, talcum powder and clay. The ratio of glass fiber, talcum powder and clay is 3:2:2. Glass fiber is added to the mixed material of polyvinyl chloride, polyethylene and polypropylene to improve the strength, rigidity and heat resistance of the mixture. Talc is added to the mixed material of polyvinyl chloride, polyethylene and polypropylene to improve the hardness, wear resistance and chemical resistance of the mixture. Clay is added to the mixed material of polyvinyl chloride, polyethylene and polypropylene to improve the strength, toughness and heat resistance of the mixture.

[0018] Additives include compatibilizers, plasticizers, antioxidants, light stabilizers, lubricants, masterbatches and flame retardants. The compatibilizer accounts for 5% of the total mass, the plasticizer accounts for 5% of the total mass, the antioxidant and light stabilizer account for 1% of the total mass, the lubricant accounts for 1% of the total mass, the masterbatch accounts for 1% of the total mass, and the flame retardant accounts for 2% of the total mass.

[0019] The mixed extrusion of the composite material is specifically carried out using a high-speed mixer and a twin-screw extruder. The operating time of the high-speed mixer is 5min-15min, the operating time of the twin-screw extruder is 2min-5min, and the processing temperature of the twin-screw extruder is 200℃-250℃.

[0020] The flame retardant is magnesium hydroxide.

[0021] The particle size of polyvinyl chloride, polyethylene and polypropylene is ≤300μm, ensuring that the three materials can be fully dispersed and mixed so that each part of the material has the same performance and stability.

[0022] The composite material of this solution has improved chemical resistance, toughness and impact resistance, and the thermal stability of the material is improved. The material has good processing performance and can be processed by multiple processing methods. It has better weather resistance and extends the service life of the cable.

[0023] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0024] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention has been disclosed as above in the form of preferred embodiments, it is not intended to limit the present invention. Any technical personnel in the 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 brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A modified cable composite material, characterized in that: It includes polyvinyl chloride, polyethylene, polypropylene, elastomeric materials, inorganic fillers and additives. The ratio of polyvinyl chloride, polyethylene and polypropylene is 4:3:3, the ratio of the elastomeric materials is 15%, the ratio of the inorganic fillers is 35%, and the ratio of the additives is 15%.

2. The modified cable composite material according to claim 1, characterized in that: The elastomeric material includes ethylene propylene rubber, silicone rubber and thermoplastic elastomer, the ethylene propylene rubber accounts for 5% of the total mass, the silicone rubber accounts for 3% of the total mass, and the thermoplastic elastomer accounts for 7% of the total mass.

3. The modified cable composite material according to claim 1, characterized in that: The inorganic filler includes glass fiber, talcum powder and clay, and the ratio of the glass fiber, talcum powder and clay is 3:2:

2.

4. The modified cable composite material according to claim 1, characterized in that: The additives include compatibilizer, plasticizer, antioxidant, light stabilizer, lubricant, masterbatch and flame retardant, wherein the compatibilizer accounts for 5% of the total mass, the plasticizer accounts for 5% of the total mass, the antioxidant and light stabilizer account for 1% of the total mass, the lubricant accounts for 1% of the total mass, the masterbatch accounts for 1% of the total mass, and the flame retardant accounts for 2% of the total mass.

5. The modified cable composite material according to claim 1, characterized in that: The mixed extrusion of the composite material is specifically carried out using a high-speed mixer and a twin-screw extruder. The operating time of the high-speed mixer is 5min-15min, the operating time of the twin-screw extruder is 2min-5min, and the processing temperature of the twin-screw extruder is 200℃-250℃.

6. The modified cable composite material according to claim 4, characterized in that: The flame retardant is magnesium hydroxide.

7. The modified cable composite material according to claim 1, characterized in that: The particle size of the polyvinyl chloride, polyethylene and polypropylene is ≤300 μm.