Efficient insulated cable material and preparation method thereof

A technology for insulating cables and cable materials, which is applied in the field of high-efficiency insulating cable materials and its preparation, which can solve problems such as low safety, poor insulation performance, and easy electric shocks for users, and achieve high safety, improved insulation performance, and improved flame retardancy performance effect

Inactive Publication Date: 2019-10-29
安徽飞马电缆有限公司
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AI-Extracted Technical Summary

Problems solved by technology

At present, the insulation performance of cable materials is poor. When the cable is energized, it is very easy to t...
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Abstract

The invention provides an efficient insulated cable material and a preparation method thereof, and relates to the technical field of cable production. The cable material is prepared from the raw materials in parts by weight: 45-55 parts of ethylene propylene diene monomer rubber, 15-20 parts of silicone rubber, 10-15 parts of polyurethane rubber, 4-6 parts of phenolic resin, 0.8-1.2 parts of polyvinyl chloride, 0.5-0.8 part of a modifier, 5-7 parts of polyalkylene glycol, 2-4 parts of polydiphenyl ether, 4-6 parts of m-xylylenediamine, 3-5 parts of shell-lac, 6-8 parts of sulfur hexafluoride,3-5 parts of ammonium phosphate, 5-7 parts of sulphur, 2-4 parts of boron nitride, 2-4 parts of a curing agent and 2-4 parts of a vulcanizing agent. According to the efficient insulated cable material, the shortcomings in the prior art are overcome, the insulation performance of the cable material can be effectively improved, the electricity is prevented from being transmitted to the outside to cause the risk of electric shock to a user when the cable is electrified, the insulation performance of the cable material is good, the flame resistance of the cable material can further be improved, the overall performance of the cable material is excellent, the safety is high, and the efficient insulated cable material is suitable for promotion.

Technology Topic

ChemistryEther +12

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  • Efficient insulated cable material and preparation method thereof

Examples

  • Experimental program(4)

Example Embodiment

[0025] Example 1:
[0026] A high-efficiency insulating cable material, the cable material is made of the following parts by weight of raw materials: 45 parts of EPDM rubber, 15 parts of silicone rubber, 10 parts of polyurethane rubber, 4 parts of phenolic resin, 0.8 parts of polyvinyl chloride, modified Sexual agent 0.5 parts, polyalkylene glycol 5 parts, polydiphenyl ether 2 parts, meta-xylylenediamine 4 parts, shellac 3 parts, sulfur hexafluoride 6 parts, ammonium phosphate 3 parts, sulfur 5 parts, 2 parts of boron nitride, 2 parts of curing agent, 2 parts of vulcanizing agent.
[0027] Wherein, the modifier is made by mixing cetyltrimethylammonium bromide and polymethylpyrrolidine in a mass ratio of 2:1; the curing agent is made of boron trinitride ethylamine, isocyanuride Acid triglycidyl ester and organic acid anhydride are mixed with a mass ratio of 4:3:1; the vulcanizing agent is composed of 2-thiol imidazoline, 2,4,6-tris(dimethylaminomethyl)phenol and Cyclohexanone peroxide is mixed with a mass ratio of 5:3:2.
[0028] The method for preparing the cable material includes the following steps:
[0029] (1) Mix the phenolic resin, polyvinyl chloride and modifier into the reactor, firstly heat up to 140-160°C, keep warm and mix for 1-1.5h, then heat up to 210-230°C, and at the same time pass in argon gas and Increase the pressure to 10-12MPa, keep the pressure for 40-60min and return to normal pressure after modification, and then keep it for 1.5-2h to obtain the modified material for use;
[0030] (2) Mix the polyalkylene glycol, polydiphenyl ether, meta-xylylenediamine and shellac into the reaction kettle in step (1) above, heat and mix for 1-2h, then pour the mixture Put it into the ultrasonic oscillator, heat up to 80-100℃, and ultrasonically oscillate for 20-30min to obtain auxiliary material A for use;
[0031] (3) Add sulfur hexafluoride, ammonium phosphate, sulfur and boron nitride to the crusher for mixing and crushing, then place the mixture in the freezer and store it at a low temperature under the conditions of minus 35℃- minus 25℃ 1- 2h, after low-temperature grinding and then continue to low-temperature storage for 2-3h to obtain auxiliary material B for use;
[0032] (4) Mix EPDM rubber, silicone rubber and polyurethane rubber into the internal mixer, heat up to 200-220℃, heat and mix for 2-3 hours to obtain the mixed base material for use;
[0033] (5) Mix the prepared auxiliary material A and auxiliary material B into the internal mixer in the above step (4), then add the curing agent and the vulcanizing agent, continue to heat and mix for 4-6 hours, and then drive the mixture into the mixer. In the machine, extrusion granulation to obtain the product.
[0034] Wherein, in the step (1), the rotation speed of the heat preservation and mixing is 100-120r/min, and the rotation speed of the heat preservation and mixing in the step (4) is 150-170r/min; the frequency of the ultrasonic oscillator in the step (2) 20-25kHz, ultrasonic sound intensity is 2-3W/cm 2; The step (3) is mixed and crushed to a 80-mesh sieve, and then cryogenically ground to a 200-mesh sieve.

Example Embodiment

[0035] Example 2:
[0036] A high-efficiency insulating cable material, the cable material is made of the following parts by weight of raw materials: 50 parts of EPDM rubber, 18 parts of silicone rubber, 13 parts of polyurethane rubber, 5 parts of phenolic resin, 1.0 part of polyvinyl chloride, modified Sexual agent 0.7 parts, polyalkylene glycol 6 parts, polydiphenyl ether 3 parts, metaxylylenediamine 5 parts, shellac 4 parts, sulfur hexafluoride 7 parts, ammonium phosphate 4 parts, sulfur 6 parts, 3 parts of boron nitride, 3 parts of curing agent, 3 parts of vulcanizing agent.
[0037] Wherein, the modifier is made by mixing cetyltrimethylammonium bromide and polymethylpyrrolidine in a mass ratio of 2:1; the curing agent is made of boron trinitride ethylamine, isocyanuride Acid triglycidyl ester and organic acid anhydride are mixed with a mass ratio of 4:3:1; the vulcanizing agent is composed of 2-thiol imidazoline, 2,4,6-tris(dimethylaminomethyl)phenol and Cyclohexanone peroxide is mixed with a mass ratio of 5:3:2.
[0038] The method for preparing the cable material includes the following steps:
[0039] (1) Mix the phenolic resin, polyvinyl chloride and modifier into the reactor, firstly heat up to 140-160°C, keep warm and mix for 1-1.5h, then heat up to 210-230°C, and at the same time pass in argon gas and Increase the pressure to 10-12MPa, keep the pressure for 40-60min and return to normal pressure after modification, and then keep it for 1.5-2h to obtain the modified material for use;
[0040] (2) Mix the polyalkylene glycol, polydiphenyl ether, meta-xylylenediamine and shellac into the reaction kettle in step (1) above, heat and mix for 1-2h, then pour the mixture Put it into the ultrasonic oscillator, heat up to 80-100℃, and ultrasonically oscillate for 20-30min to obtain auxiliary material A for use;
[0041] (3) Add sulfur hexafluoride, ammonium phosphate, sulfur and boron nitride to the crusher for mixing and crushing, then place the mixture in the freezer and store it at a low temperature under the conditions of minus 35℃- minus 25℃ 1- 2h, after low-temperature grinding and then continue to low-temperature storage for 2-3h to obtain auxiliary material B for use;
[0042] (4) Mix EPDM rubber, silicone rubber and polyurethane rubber into the internal mixer, heat up to 200-220℃, heat and mix for 2-3h to obtain the mixed base material for use;
[0043] (5) Mix the prepared auxiliary material A and auxiliary material B into the internal mixer in the above step (4), then add the curing agent and the vulcanizing agent, continue to heat and mix for 4-6 hours, and then drive the mixture into the mixer. In the machine, extrusion granulation to obtain the product.
[0044] Wherein, in the step (1), the rotation speed of the heat preservation and mixing is 100-120r/min, and the rotation speed of the heat preservation and mixing in the step (4) is 150-170r/min; the frequency of the ultrasonic oscillator in the step (2) 20-25kHz, ultrasonic sound intensity is 2-3W/cm 2; The step (3) is mixed and crushed to a 80-mesh sieve, and then cryogenically ground to a 200-mesh sieve.

Example Embodiment

[0045] Example 3:
[0046] A high-efficiency insulating cable material, the cable material is made of the following parts by weight of raw materials: 55 parts of EPDM rubber, 20 parts of silicone rubber, 15 parts of polyurethane rubber, 6 parts of phenolic resin, 1.2 parts of polyvinyl chloride, modified Sexual agent 0.8 parts, polyalkylene glycol 7 parts, polydiphenyl ether 4 parts, meta-xylylenediamine 6 parts, shellac 5 parts, sulfur hexafluoride 8 parts, ammonium phosphate 5 parts, sulfur 7 parts, 4 parts of boron nitride, 4 parts of curing agent, 4 parts of vulcanizing agent.
[0047] Wherein, the modifier is made by mixing cetyltrimethylammonium bromide and polymethylpyrrolidine in a mass ratio of 2:1; the curing agent is made of boron trimethyl ammonium bromide and isocyanurea Acid triglycidyl ester and organic acid anhydride are mixed with a mass ratio of 4:3:1; the vulcanizing agent is composed of 2-thiol imidazoline, 2,4,6-tris(dimethylaminomethyl)phenol and Cyclohexanone peroxide is mixed with a mass ratio of 5:3:2.
[0048] The method for preparing the cable material includes the following steps:
[0049] (1) Mix the phenolic resin, polyvinyl chloride and modifier into the reaction kettle, firstly heat the temperature to 140-160°C, keep it warm and mix for 1-1.5h, then heat up to 210-230°C, and at the same time pass in argon gas and Increase the pressure to 10-12MPa, keep the pressure for 40-60min and return to normal pressure after modification, and then keep it for 1.5-2h to obtain the modified material for use;
[0050] (2) Mix the polyalkylene glycol, polydiphenyl ether, meta-xylylenediamine and shellac into the reaction kettle in the above step (1), heat and mix for 1-2h, then pour the mixture Put it into the ultrasonic oscillator, heat up to 80-100℃, and ultrasonically oscillate for 20-30min to obtain auxiliary material A for use;
[0051] (3) Add sulfur hexafluoride, ammonium phosphate, sulfur and boron nitride to the crusher for mixing and crushing, and then place the mixture in a freezer and store it at a low temperature under the conditions of minus 35℃- minus 25℃ 1- 2h, after low-temperature grinding, then continue to low-temperature storage for 2-3h to obtain accessory B for use;
[0052] (4) Mix EPDM rubber, silicone rubber and polyurethane rubber into the internal mixer, heat up to 200-220℃, heat and mix for 2-3h to obtain the mixed base material for use;
[0053] (5) Mix the prepared auxiliary material A and auxiliary material B into the internal mixer in the above step (4), then add the curing agent and the vulcanizing agent, continue to heat and mix for 4-6 hours, and then drive the mixture into the mixer. In the machine, extrusion granulation to obtain the product.
[0054] Wherein, in the step (1), the speed of the heat preservation and mixing is 100-120r/min, the speed of the heat preservation and mixing in the step (4) is 150-170r/min; the frequency of the ultrasonic oscillator in the step (2) 20-25kHz, ultrasonic sound intensity is 2-3W/cm 2; The step (3) is mixed and crushed to a 80-mesh sieve, and then cryogenically ground to a 200-mesh sieve.

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