CN110845800A - Preparation method of insulating material for cable insulating layer - Google Patents
Preparation method of insulating material for cable insulating layer Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
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- C08L2203/00—Applications
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- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
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- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention provides a preparation method of an insulating material for a cable insulating layer, which comprises the following steps: crushing the glass fiber reinforced polypropylene composite waste into glass fiber reinforced polypropylene particles by a crusher; weighing high-ethylene-propylene-diene monomer, glass fiber reinforced polypropylene particles, polystyrene-butadiene copolymer, coupling agent and antioxidant in proportion, and then putting into an internal mixer for mixing; adding argil, nano zinc oxide, nano zirconium oxide, an anti-aging agent and hydroxy cellulose, and continuously mixing; adding a vulcanizing agent and aluminum hydroxide for vulcanization and then discharging. According to the preparation method of the insulating material for the cable insulating layer, provided by the invention, the glass fiber reinforced polypropylene particles are used as the reinforcing material, so that the resource utilization of glass fiber reinforced polypropylene waste is realized, the environmental pollution is reduced, and the prepared insulating material has the advantages of low insulation resistance and excellent mechanical property, is easy to realize large-scale production and has extremely high practical value.
Description
Technical Field
The invention relates to the technical field of cable insulation sheaths, in particular to a preparation method of an insulation material for a cable insulation layer.
Background
In recent years, along with the high-speed development of Chinese economy, the contradiction of energy supply tension is more and more prominent, and in order to meet the requirement, each large coal mine adopts high-power coal mining equipment to improve the productivity, and the requirement of a cable matched with the coal mining equipment for transmitting power is continuously improved. Ethylene propylene rubber as an insulating material has high operational reliability and other advantages, such as almost no reduction in electrical and mechanical properties after immersion in water, and good electrical resistance and heat resistance. The existing ethylene propylene rubber material can not meet the social requirements of high-speed development more and more, and how to prepare an ethylene propylene diene monomer cable sheath material which is environment-friendly, ageing-resistant, good in mechanical property, low in production cost and good in economic benefit becomes a technical problem to be solved at present. The glass fiber reinforced polypropylene is a common plastic material, a large amount of glass fiber reinforced polypropylene composite waste is generated in the production process of the glass fiber reinforced polypropylene, the existing treatment method is incineration or burying, great environmental pollution is caused, and the technical problem that whether the glass fiber reinforced polypropylene composite waste can be used as a rubber reinforcing agent is urgently needed to be solved.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a preparation method of an insulating material for a cable insulating layer.
A preparation method of an insulating material for a cable insulating layer comprises the following steps:
crushing the glass fiber reinforced polypropylene composite waste into glass fiber reinforced polypropylene particles with the particle size of 0.8mm by a crusher;
weighing high-ethylene-propylene-diene monomer, glass fiber reinforced polypropylene particles, polystyrene butadiene copolymer, a coupling agent and an antioxidant in proportion, and then putting the weighed materials into an internal mixer for mixing, wherein the rotating speed of a main machine is 45-55r/min, and the mixing time is 1-1.5 h;
thirdly, adding argil, nano zinc oxide, nano zirconium oxide, an anti-aging agent and hydroxy cellulose for mixing;
and (IV) adding a vulcanizing agent and aluminum hydroxide for vulcanization at the vulcanization temperature of 150-160 ℃ for 1.5-2h, and discharging to obtain the insulating material for the cable insulating layer.
Further, the weight ratio of the high ethylene-propylene-diene monomer rubber, the glass fiber reinforced polypropylene particles, the polystyrene-butadiene copolymer, the coupling agent and the antioxidant is 55-65: 20-30:5-15: 3-5:2-3.
Further, the weight ratio of the high ethylene-propylene-diene monomer rubber, the argil, the nano zinc oxide, the nano zirconium oxide, the anti-aging agent and the hydroxy cellulose is 55-65: 5-10: 5-10: 3-5: 2-3: 0.5-1.5.
Further, the weight ratio of the high ethylene-propylene-diene monomer, the vulcanizing agent and the aluminum hydroxide is as follows: 55-65: 2-5: 1-3.
Further, the ethylene content in the synthetic monomer of the high-ethylene-propylene-diene monomer is more than 70%, and the content of the third monomer is more than 3.5%.
Further, the coupling agent is maleic anhydride grafted polyethylene.
Further, the antioxidant is pentaerythritol tetrakis [ β - (3 ', 5 ' -di-tert-butyl-4 ' -hydroxyphenyl) propionate ].
Further, the anti-aging agent is one or more of anti-aging agent 224, anti-aging agent 4010NA or anti-aging agent 4020.
Further, the vulcanizing agent is one or more of dicumyl peroxide, triallyl isocyanurate and di-tert-butyl hexane peroxide.
According to the preparation method of the insulating material for the cable insulating layer, provided by the invention, the glass fiber reinforced polypropylene particles are used as the reinforcing material, so that the resource utilization of glass fiber reinforced polypropylene waste is realized, the environmental pollution is reduced, the preparation method has far-reaching significance in the aspects of energy conservation and environmental protection, and is simple, the raw material source is wide, and special equipment and harsh conditions are not needed. The insulating material prepared by the preparation method provided by the invention has the advantages of low insulation resistance and excellent mechanical property, is easy to realize large-scale production, and has extremely high practical value.
Detailed Description
The present invention will be further described with reference to specific examples and comparative examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention.
The glass fiber reinforced polypropylene particles mainly used as a reinforcing agent added into the raw materials have the advantages of wide sources and low manufacturing cost, and have good compatibility with ethylene propylene rubber. The addition of the polystyrene butadiene copolymer can increase the mechanical strength and elasticity of the material.
Example 1
Crushing the glass fiber reinforced polypropylene composite waste into glass fiber reinforced polypropylene particles with the particle size of 0.8mm by a crusher;
(II) 55 parts of high ethylene-propylene-diene monomer (EPDM) (by weight, the same below), 25 parts of glass fiber reinforced polypropylene particles, 10 parts of polystyrene-butadiene copolymer, 3 parts of maleic anhydride grafted polyethylene and 2 parts of tetra [ β - (3 ', 5 ' -di-tert-butyl-4 ' -hydroxyphenyl) propionic acid ] pentaerythritol ester are accurately weighed and then put into an internal mixer for mixing, wherein the rotating speed of a main machine is 45r/min, and the mixing time is 1 h;
adding 5 parts of argil, 5 parts of nano zinc oxide, 3 parts of nano zirconium oxide, 40202 parts of anti-aging agent and 0.5 part of hydroxy cellulose, and continuously mixing;
and (IV) adding 3 parts of dicumyl peroxide and 1 part of aluminum hydroxide for vulcanization at the vulcanization temperature of 150 ℃ for 1.5h, and discharging to obtain the insulating material for the cable insulating layer.
The prepared insulating material is subjected to main performance tests according to JB/T15065-2009 technical Specification for black polyethylene overhead insulating materials, and detailed performance test results are shown in Table 1.
Example 2
Crushing the glass fiber reinforced polypropylene composite waste into glass fiber reinforced polypropylene particles with the particle size of 0.8mm by a crusher;
secondly, accurately weighing 60 parts of high ethylene-propylene-diene monomer rubber, 25 parts of glass fiber reinforced polypropylene particles, 10 parts of polystyrene-butadiene copolymer, 3 parts of maleic anhydride grafted polyethylene and 2 parts of tetra [ β - (3 ', 5 ' -di-tert-butyl-4 ' -hydroxyphenyl) propionic acid ] pentaerythritol ester, and then putting the materials into an internal mixer for mixing, wherein the rotating speed of a main machine is 45r/min, and the mixing time is 1 h;
adding 5 parts of argil, 5 parts of nano zinc oxide, 3 parts of nano zirconium oxide, 40202 parts of anti-aging agent and 0.5 part of hydroxy cellulose, and continuously mixing;
and (IV) adding 3 parts of dicumyl peroxide and 1 part of aluminum hydroxide for vulcanization at the vulcanization temperature of 150 ℃ for 1.5h, and discharging to obtain the insulating material for the cable insulating layer.
The prepared insulating material is subjected to main performance tests according to JB/T15065-2009 technical Specification for black polyethylene overhead insulating materials, and detailed performance test results are shown in Table 1.
Example 3
Crushing the glass fiber reinforced polypropylene composite waste into glass fiber reinforced polypropylene particles with the particle size of 0.8mm by a crusher;
secondly, accurately weighing 60 parts of high ethylene-propylene-diene monomer rubber, 20 parts of glass fiber reinforced polypropylene particles, 15 parts of polystyrene butadiene copolymer, 3 parts of maleic anhydride grafted polyethylene and 2 parts of tetra [ β - (3 ', 5 ' -di-tert-butyl-4 ' -hydroxyphenyl) propionic acid ] pentaerythritol ester, and then putting the materials into an internal mixer for mixing, wherein the rotating speed of a main machine is 55r/min, and the mixing time is 1 h;
adding 5 parts of argil, 5 parts of nano zinc oxide, 3 parts of nano zirconium oxide, 40202 parts of anti-aging agent and 0.5 part of hydroxy cellulose, and continuously mixing;
and (IV) adding 3 parts of dicumyl peroxide and 1 part of aluminum hydroxide for vulcanization, wherein the vulcanization temperature is 160 ℃, the vulcanization time is 2 hours, and discharging to obtain the insulating material for the cable insulating layer.
The prepared insulating material is subjected to main performance tests according to JB/T15065-2009 technical Specification for black polyethylene overhead insulating materials, and detailed performance test results are shown in Table 1.
Example 4
Crushing the glass fiber reinforced polypropylene composite waste into glass fiber reinforced polypropylene particles with the particle size of 0.8mm by a crusher;
secondly, accurately weighing 65 parts of high ethylene-propylene-diene monomer rubber, 20 parts of glass fiber reinforced polypropylene particles, 5 parts of polystyrene-butadiene copolymer, 3 parts of maleic anhydride grafted polyethylene and 2 parts of tetra [ β - (3 ', 5 ' -di-tert-butyl-4 ' -hydroxyphenyl) propionic acid ] pentaerythritol ester, and then putting the materials into an internal mixer for mixing, wherein the rotating speed of a main machine is 45r/min, and the mixing time is 1 h;
adding 5 parts of argil, 5 parts of nano zinc oxide, 3 parts of nano zirconium oxide, 40202 parts of anti-aging agent and 0.5 part of hydroxy cellulose, and continuously mixing;
and (IV) adding 3 parts of dicumyl peroxide and 1 part of aluminum hydroxide for vulcanization at the vulcanization temperature of 150 ℃ for 1.5h, and discharging to obtain the insulating material for the cable insulating layer.
The prepared insulating material is subjected to main performance tests according to JB/T15065-2009 technical Specification for black polyethylene overhead insulating materials, and detailed performance test results are shown in Table 1.
Example 5
Crushing the glass fiber reinforced polypropylene composite waste into glass fiber reinforced polypropylene particles with the particle size of 0.8mm by a crusher;
secondly, accurately weighing 60 parts of high ethylene-propylene-diene monomer rubber, 30 parts of glass fiber reinforced polypropylene particles, 5 parts of polystyrene butadiene copolymer, 3 parts of maleic anhydride grafted polyethylene and 2 parts of tetra [ β - (3 ', 5 ' -di-tert-butyl-4 ' -hydroxyphenyl) propionic acid ] pentaerythritol ester, and then putting the materials into an internal mixer for mixing, wherein the rotating speed of a main machine is 45r/min, and the mixing time is 1 h;
adding 5 parts of argil, 5 parts of nano zinc oxide, 3 parts of nano zirconium oxide, 40202 parts of anti-aging agent and 0.5 part of hydroxy cellulose, and continuously mixing;
and (IV) adding 3 parts of dicumyl peroxide and 1 part of aluminum hydroxide for vulcanization at the vulcanization temperature of 150 ℃ for 1.5h, and discharging to obtain the insulating material for the cable insulating layer.
The prepared insulating material is subjected to main performance tests according to JB/T15065-2009 technical Specification for black polyethylene overhead insulating materials, and detailed performance test results are shown in Table 1.
Example 6
Crushing the glass fiber reinforced polypropylene composite waste into glass fiber reinforced polypropylene particles with the particle size of 0.8mm by a crusher;
55 parts of high ethylene-propylene-diene monomer rubber, 30 parts of glass fiber reinforced polypropylene particles, 15 parts of polystyrene-butadiene copolymer, 3 parts of maleic anhydride grafted polyethylene and 2 parts of tetra [ β - (3 ', 5 ' -di-tert-butyl-4 ' -hydroxyphenyl) propionic acid ] pentaerythritol ester are accurately weighed and then put into an internal mixer for mixing, wherein the rotating speed of a main machine is 45r/min, and the mixing time is 1 h;
adding 5 parts of argil, 5 parts of nano zinc oxide, 3 parts of nano zirconium oxide, 40202 parts of anti-aging agent and 0.5 part of hydroxy cellulose, and continuously mixing;
and (IV) adding 3 parts of dicumyl peroxide and 1 part of aluminum hydroxide for vulcanization at the vulcanization temperature of 150 ℃ for 1.5h, and discharging to obtain the insulating material for the cable insulating layer.
The prepared insulating material is subjected to main performance tests according to JB/T15065-2009 technical Specification for black polyethylene overhead insulating materials, and detailed performance test results are shown in Table 1.
Example 7
Crushing the glass fiber reinforced polypropylene composite waste into glass fiber reinforced polypropylene particles with the particle size of 0.8mm by a crusher;
55 parts of high ethylene-propylene-diene monomer rubber, 25 parts of glass fiber reinforced polypropylene particles, 15 parts of polystyrene-butadiene copolymer, 3 parts of maleic anhydride grafted polyethylene and 2 parts of tetra [ β - (3 ', 5 ' -di-tert-butyl-4 ' -hydroxyphenyl) propionic acid ] pentaerythritol ester are accurately weighed and then put into an internal mixer for mixing, wherein the rotating speed of a main machine is 45r/min, and the mixing time is 1.5 h;
adding 5 parts of argil, 5 parts of nano zinc oxide, 3 parts of nano zirconium oxide, 40202 parts of anti-aging agent and 0.5 part of hydroxy cellulose, and continuously mixing;
and (IV) adding 3 parts of dicumyl peroxide and 1 part of aluminum hydroxide for vulcanization, wherein the vulcanization temperature is 150 ℃, the vulcanization time is 2 hours, and discharging to obtain the insulating material for the cable insulating layer.
The prepared insulating material is subjected to main performance tests according to JB/T15065-2009 technical Specification for black polyethylene overhead insulating materials, and detailed performance test results are shown in Table 1.
Example 8
Crushing the glass fiber reinforced polypropylene composite waste into glass fiber reinforced polypropylene particles with the particle size of 0.8mm by a crusher;
55 parts of high ethylene-propylene-diene monomer rubber, 25 parts of glass fiber reinforced polypropylene particles, 10 parts of polystyrene-butadiene copolymer, 3 parts of maleic anhydride grafted polyethylene and 2 parts of tetra [ β - (3 ', 5 ' -di-tert-butyl-4 ' -hydroxyphenyl) propionic acid ] pentaerythritol ester are accurately weighed and then put into an internal mixer for mixing, wherein the rotating speed of a main machine is 45r/min, and the mixing time is 1 h;
adding 5 parts of argil, 5 parts of nano zinc oxide, 3 parts of nano zirconium oxide, 40202 parts of anti-aging agent and 0.5 part of hydroxy cellulose, and continuously mixing;
and (IV) adding 3 parts of dicumyl peroxide and 1 part of aluminum hydroxide for vulcanization at the vulcanization temperature of 150 ℃ for 1.5h, and discharging to obtain the insulating material for the cable insulating layer.
The prepared insulating material is subjected to main performance tests according to JB/T15065-2009 technical Specification for black polyethylene overhead insulating materials, and detailed performance test results are shown in Table 1.
Comparative example
Weighing the following raw materials according to the following composition formula: 70 parts of low-density polyethylene, 30 parts of ethylene-vinyl acetate copolymer, 10 parts of argil, 1 part of benzophenone, 1 part of isocyanurate, 10101 parts of antioxidant and 1 part of zinc stearate;
secondly, putting the weighed raw materials into an internal mixer, and uniformly mixing at 50-60 ℃ (for about 5-10 min);
and (III) putting the mixed mixture into an extruder for extrusion granulation (the extrusion temperature is 100-130 ℃, and the rotation speed of the extruder is 80rpm) to obtain the composite material for comparison.
The prepared insulating material is subjected to main performance tests according to JB/T15065-2009 technical Specification for black polyethylene overhead insulating materials, and detailed performance test results are shown in Table 1.
TABLE 1 results of performance test of insulating materials of examples
As can be seen from the results of the performance tests shown in Table 1: the high-ethylene-propylene-diene monomer insulation material takes high-ethylene-propylene-diene monomer rubber, glass fiber reinforced polypropylene particles and polystyrene-butadiene copolymer as main components, a coupling agent, an antioxidant, pottery clay, nano zinc oxide, nano zirconium oxide, an anti-aging agent, hydroxy cellulose, a vulcanizing agent and aluminum hydroxide are added, crushing and mixing processes are assisted, and particularly, the glass fiber reinforced polypropylene particles ground from glass fiber reinforced polypropylene composite waste materials with wide sources are used as a reinforcing agent, so that the prepared insulation material has good weather resistance, low insulation resistance, better mechanical property and good application prospect, and has good social benefits.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A preparation method of an insulating material for a cable insulating layer is characterized by comprising the following steps:
crushing the glass fiber reinforced polypropylene composite waste into glass fiber reinforced polypropylene particles with the particle size of 0.8mm by a crusher;
weighing high-ethylene-propylene-diene monomer, glass fiber reinforced polypropylene particles, polystyrene butadiene copolymer, a coupling agent and an antioxidant in proportion, and then putting the weighed materials into an internal mixer for mixing, wherein the rotating speed of a main machine is 45-55r/min, and the mixing time is 1-1.5 h;
thirdly, adding argil, nano zinc oxide, nano zirconium oxide, an anti-aging agent and hydroxy cellulose for mixing;
and (IV) adding a vulcanizing agent and aluminum hydroxide for vulcanization at the vulcanization temperature of 150-160 ℃ for 1.5-2h, and discharging to obtain the insulating material for the cable insulating layer.
2. The preparation method of claim 1, wherein the weight ratio of the high ethylene-propylene-diene monomer rubber, the glass fiber reinforced polypropylene particles, the polystyrene-butadiene copolymer, the coupling agent and the antioxidant is 55-65: 20-30:5-15: 3-5:2-3.
3. The preparation method of claim 1, wherein the weight ratio of the high ethylene-propylene-diene monomer rubber, the pottery clay, the nano zinc oxide, the nano zirconium oxide, the anti-aging agent and the hydroxy cellulose is 55-65: 5-10: 5-10: 3-5: 2-3: 0.5-1.5.
4. The preparation method according to claim 1, wherein the weight ratio of the high ethylene-propylene-diene monomer, the vulcanizing agent and the aluminum hydroxide is as follows: 55-65: 2-5: 1-3.
5. The preparation method of any one of claims 1 to 4, wherein the content of ethylene in the synthetic monomers of the high-ethylene propylene diene monomer is more than 70%, and the content of the third monomer is more than 3.5%.
6. The method according to claim 1, wherein the coupling agent is maleic anhydride-grafted polyethylene.
7. The method of claim 1, wherein the antioxidant is pentaerythrityl tetrakis [ β - (3 ', 5 ' -di-tert-butyl-4 ' -hydroxyphenyl) propionate ].
8. The preparation method according to claim 1, wherein the anti-aging agent is one or more of anti-aging agent 224, anti-aging agent 4010NA or anti-aging agent 4020.
9. The preparation method according to claim 1, wherein the vulcanizing agent is one or more of dicumyl peroxide, triallyl isocyanurate and di-tert-butyl hexane peroxide.
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Cited By (3)
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| CN112317125A (en) * | 2020-11-10 | 2021-02-05 | 安徽鸿海电缆有限公司 | Instrument cable of intrinsic safety system |
| CN112599289A (en) * | 2020-12-15 | 2021-04-02 | 陈小栓 | Cable with high wear resistance and ductility and preparation method thereof |
| CN115490969A (en) * | 2022-09-27 | 2022-12-20 | 东莞市利群榕兴高分子科技有限公司 | Production and manufacturing method of ultrahigh-voltage insulation ethylene propylene diene monomer |
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