CN112442225A - Preparation method of special material for 5G optical fiber sheath by taking recycled polyethylene as matrix - Google Patents
Preparation method of special material for 5G optical fiber sheath by taking recycled polyethylene as matrix Download PDFInfo
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Abstract
The invention discloses a preparation method of a special material for a 5G optical fiber sheath by taking recycled polyethylene as a matrix, which comprises the following steps of: secondly, mixing the matrix material, the light stabilizer and the 2-hydroxy-4-n-octoxy benzophenone for 10-15min, starting discharging when the temperature of the internal mixer reaches 130-; thirdly, feeding the chloroprene rubber, the alpha-methylstyrene-acrylonitrile copolymer, the calcium carbonate, the accelerant TMDT, the anti-aging agent, the plasticizer and the first mixture into an internal mixer, and mixing for 5-10min at the temperature of 100-120 ℃ to obtain a second mixture; and putting the second mixture into a screw extruder, and carrying out melt extrusion to obtain the special material for the 5G optical fiber sheath with the recycled polyethylene as the matrix.
Description
Technical Field
The invention belongs to the technical field of optical fiber sheaths, and particularly relates to a preparation method of a special material for a 5G optical fiber sheath by taking recycled polyethylene as a matrix.
Background
The optical fiber infrastructure is the foundation of the development of the mobile communication technology of each generation, and with the continuous development of the 5G communication technology, new requirements are put on the optical fiber infrastructure, namely, high optical fiber bearing capacity and high optical fiber connection density are required, and the competition of the 5G is gradually changed into the competition of the optical fiber infrastructure. The prior optical fiber sheath material mainly uses polyethylene, and has the advantages of light weight, high bending strength, small friction coefficient, good sealing performance, corrosion resistance and the like, but the optical fiber sheath made of the material has various defects, such as poor heat resistance and light aging resistance.
The waste polyethylene plastic garbage is light and large in volume, stable in chemical property and difficult to eliminate by the environment after being discarded, can be seen everywhere along with the use of a large amount of plastics, is usually treated by a landfill method, the landfill of the waste plastic garbage can occupy a large amount of land resources, the polyethylene plastic garbage is stable in property and difficult to degrade, and can damage the soil structure after being left in the soil for a long time, so that the soil is hardened, the crop breathing and nutrient absorption are prevented, and even the yield is reduced; in addition, a large amount of toxic gas is generated in the incineration treatment, and the atmospheric pollution is caused.
Disclosure of Invention
The invention provides a preparation method of a special material for a 5G optical fiber sheath by taking recycled polyethylene as a matrix.
The technical problems to be solved by the invention are as follows:
the waste polyethylene plastic garbage is light and large in volume, stable in chemical property and difficult to eliminate by the environment after being discarded, the conventional optical fiber sheath material mainly uses polyethylene and has the advantages of light weight, high bending strength, small friction coefficient, good sealing performance, corrosion resistance and the like, and the tensile strength and the elongation at break of the recovered polyethylene are poor compared with those of a new material.
The purpose of the invention can be realized by the following technical scheme:
a preparation method of a special material for a 5G optical fiber sheath by taking recycled polyethylene as a matrix comprises the following steps:
firstly, weighing the following raw materials in parts by weight: 40-60 parts of matrix material, 0.1-0.3 part of light stabilizer, 0.1-0.3 part of 2-hydroxy-4-n-octoxy benzophenone, 20-30 parts of chloroprene rubber, 10-20 parts of alpha-methylstyrene-acrylonitrile copolymer, 2-4 parts of calcium carbonate, 0.1-0.5 part of accelerator TMDT, 0.4-0.6 part of anti-aging agent and 0.2-0.4 part of plasticizer;
secondly, mixing the matrix material, the light stabilizer and the 2-hydroxy-4-n-octoxy benzophenone for 10-15min, starting discharging when the temperature of the internal mixer reaches 130-;
thirdly, feeding the chloroprene rubber, the alpha-methylstyrene-acrylonitrile copolymer, the calcium carbonate, the accelerant TMDT, the anti-aging agent, the plasticizer and the first mixture into an internal mixer, and mixing for 5-10min at the temperature of 100-120 ℃ to obtain a second mixture; and putting the second mixture into a screw extruder, and carrying out melt extrusion to obtain the special material for the 5G optical fiber sheath with the recycled polyethylene as the matrix.
Further, the light stabilizer is a hindered amine light stabilizer; the anti-aging agent is one of anti-aging agent MB, anti-aging agent H and anti-aging agent 4010 NA; the plasticizer is phthalate plasticizer.
Further, the matrix material is prepared by the following steps:
after being cleaned, the polyethylene reclaimed materials are dried for 4-6h at the temperature of 100 ℃, and the dried polyethylene reclaimed materials are crushed into particles with the size of about 20 mm; uniformly mixing the crushed polyethylene reclaimed material and paraffin oil, adding polyamide resin, an auxiliary agent A, an auxiliary agent B, calcium oxide and oxidized polyethylene wax, and uniformly mixing; adding into a double-screw extruder, extruding at 210 deg.C, 220 deg.C, 230 deg.C, 235 deg.C, 230 deg.C and 220 deg.C, water-cooling, drawing into strips, granulating, and drying at 100 deg.C for 4-6 hr to obtain base material.
Further, the mass ratio of the polyethylene reclaimed material, paraffin oil, polyamide resin, an auxiliary agent A, an auxiliary agent B, calcium oxide and oxidized polyethylene wax is 10: 0.01: 10: 0.1-0.3: 0.6-0.8: 0.1-0.2: 6-8.
Further, the additive A is prepared by the following steps:
step S11, adding maleic anhydride into a three-neck flask, setting the temperature to be 60 ℃ and the rotating speed to be 300r/min, heating for 6-10min, dropping eleostearic acid into the three-neck flask through a constant-pressure dropping funnel, controlling the dropping speed, finishing dropping the eleostearic acid within 30-40min, after finishing dropping, raising the temperature to 80-90 ℃, keeping the rotating speed unchanged, continuing to react for 4-6h, finishing the reaction, and reducing the temperature to room temperature to obtain a mixture a;
step S12, adding the mixture a into a three-neck flask, setting the temperature at 80 ℃ and the rotating speed at 200r/min, then adding 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, stirring for 6-10min, then increasing the temperature to 150-.
Further, the mass ratio of the maleic anhydride to the eleostearic acid in the step S11 is 5-7: 14; in the step S12, the mass ratio of the mixture a to the 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide is 7-9: 4.
further, the auxiliary B is prepared by the following steps:
step S21, adding cardanol, benzyltriethylammonium chloride and propylene oxide into a three-neck flask, setting the temperature to be 80-84 ℃ and the rotating speed to be 200r/min, stirring for 4h, cooling to 60 ℃, adding 8mol/L sodium hydroxide solution, keeping the temperature to be 56-60 ℃ and the rotating speed to be 300r/min, continuing stirring for 3h, cooling to room temperature after stirring is finished, diluting the obtained reaction liquid with deionized water of the same volume, adjusting the pH value to be 7 with 5mol/L hydrochloric acid solution, separating out the water phase, and carrying out pressure distillation on the obtained organic phase until the volume is unchanged to obtain a mixture b;
and S22, adding the mixture B, glacial acetic acid and aluminum silicate into a three-neck flask, setting the temperature at 60 ℃ and the rotating speed at 300r/min, adding 30% of hydrogen peroxide solution by mass fraction, reacting for 6 hours, cooling to room temperature after the reaction is finished, diluting the reaction solution with equal volume of deionized water, adjusting the pH value to 7 with 5mol/L sodium hydroxide solution, separating out the water phase, and carrying out vacuum distillation on the obtained organic phase until the volume is unchanged to obtain an auxiliary agent B.
Further, the molar ratio of the cashew phenol to the propylene oxide in step S21 is 1: 2; the using amount of the benzyltriethylammonium chloride is 2-4% of the mass of the cardanol, and the molar ratio of the sodium hydroxide to the cardanol is 1: 1.2-1.4; in the step S22, the mass ratio of the mixture b, the glacial acetic acid and the 30% by mass of hydrogen peroxide solution is 3: 10-12: 0.7-0.9; the mass of the aluminum silicate is 50 percent of the mass of the mixture b.
The invention has the beneficial effects that:
maleic anhydride and eleostearic acid are subjected to addition to generate a mixture a, the mixture a and 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide are subjected to addition to generate an auxiliary agent A, 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide which is a common flame-retardant intermediate, the flame-retardant property of the base material can be improved to a certain degree by introducing the auxiliary agent A, and the auxiliary agent A contains carboxyl in the maleic anhydride and has good hydrophilicity; benzyl triethyl ammonium chloride is used as a phase transfer catalyst, so that phenolic hydroxyl in cardanol reacts with epoxy groups in epoxypropane, ring opening reaction is firstly carried out, then, under the action of sodium hydroxide solution, hydrogen chloride is removed to form an epoxy structure, a mixture B is obtained, the cardanol belongs to biomass resources, and the preparation method further has the advantages of raw material regeneration, biodegradation, green environmental protection and the like, the synthesized mixture B further oxidizes side chain double bonds of the cardanol, namely the side chain double bonds of the mixture B into the epoxy groups under the oxidation action of hydrogen peroxide and glacial acetic acid, the obtained auxiliary agent B has a high epoxy value and high thermal stability, and calcium oxide added during preparation of a base material can absorb moisture in the preparation process and reduce the generation of bubbles. The epoxy group in the assistant B can react with the carboxyl group in the assistant A, meanwhile, the epoxy group in the assistant B reacts with the terminal amino group and the carboxyl group of the polyamide resin, the molecular weight and the crosslinking degree of the matrix material are improved through a coupling reaction, the recovered polyethylene material is processed to prepare the matrix material, the prepared matrix material is used for preparing the material special for the sheath, and further the comprehensive performance of the matrix material prepared from the recovered polyethylene is improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A preparation method of a special material for a 5G optical fiber sheath by taking recycled polyethylene as a matrix comprises the following steps:
firstly, weighing the following raw materials in parts by weight: 40 parts of matrix material, 0.1 part of light stabilizer, 0.1 part of 2-hydroxy-4-n-octoxy benzophenone, 20 parts of chloroprene rubber, 10 parts of alpha-methylstyrene-acrylonitrile copolymer, 2 parts of calcium carbonate, 0.1 part of TMDT (transition metal oxide) accelerator, 0.4 part of anti-aging agent and 0.2 part of plasticizer;
secondly, mixing the matrix material, the light stabilizer and the 2-hydroxy-4-n-octoxy benzophenone for 10min, starting discharging when the temperature of the internal mixer reaches 130 ℃, and cooling to obtain a first mixture;
thirdly, feeding the chloroprene rubber, the alpha-methylstyrene-acrylonitrile copolymer, the calcium carbonate, the accelerant TMDT, the anti-aging agent, the plasticizer and the first mixture into an internal mixer, and mixing for 5min at 100 ℃ to obtain a second mixture; and putting the second mixture into a screw extruder, and carrying out melt extrusion to obtain the special material for the 5G optical fiber sheath with the recycled polyethylene as the matrix.
Wherein the light stabilizer is a hindered amine light stabilizer; the anti-aging agent is anti-aging agent MB; the plasticizer is phthalate plasticizer.
Wherein, the matrix material is prepared by the following steps:
after being cleaned, the polyethylene reclaimed materials are dried for 4 hours at the temperature of 100 ℃, and the dried polyethylene reclaimed materials are crushed into particles with the size of about 20 mm; uniformly mixing the crushed polyethylene reclaimed material and paraffin oil, adding polyamide resin, an auxiliary agent A, an auxiliary agent B, calcium oxide and oxidized polyethylene wax, and uniformly mixing; adding into a double-screw extruder, extruding at 210 deg.C, 220 deg.C, 230 deg.C, 235 deg.C, 230 deg.C and 220 deg.C, water-cooling, drawing into strips, granulating, and drying at 100 deg.C for 4 hr to obtain base material.
Wherein the mass ratio of the polyethylene reclaimed material to the paraffin oil to the polyamide resin to the additive A to the additive B to the calcium oxide to the oxidized polyethylene wax is 10: 0.01: 10: 0.1: 0.6: 0.1: 6.
the additive A is prepared by the following steps:
step S11, adding maleic anhydride into a three-neck flask, setting the temperature to be 60 ℃ and the rotating speed to be 300r/min, heating for 6min, dropping eleostearic acid into the three-neck flask through a constant-pressure dropping funnel, controlling the dropping speed, finishing dropping eleostearic acid within 30min, after finishing dropping, raising the temperature to 80 ℃, keeping the rotating speed unchanged, continuing to react for 4h, and reducing the temperature to room temperature to obtain a mixture a after finishing the reaction;
and step S12, adding the mixture a into a three-neck flask, setting the temperature to be 80 ℃ and the rotating speed to be 200r/min, then adding 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, stirring for 6min, then raising the temperature to 150 ℃, keeping the temperature unchanged, continuing stirring for 6h, and cooling to room temperature after the stirring is finished to obtain the auxiliary A.
Wherein the mass ratio of the maleic anhydride to the eleostearic acid in the step S11 is 5: 14; in the step S12, the mass ratio of the mixture a to the 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide is 7: 4.
the auxiliary B is prepared by the following steps:
step S21, adding cardanol, benzyltriethylammonium chloride and propylene oxide into a three-neck flask, setting the temperature to be 80 ℃ and the rotating speed to be 200r/min, stirring for 4h, cooling to 60 ℃, adding 8mol/L sodium hydroxide solution, keeping the temperature to be 56 ℃ and the rotating speed to be 300r/min, continuing stirring for 3h, cooling to room temperature after stirring is finished, diluting the obtained reaction liquid with deionized water of the same volume, adjusting the pH value to be 7 with 5mol/L hydrochloric acid solution, separating out the water phase, and carrying out vacuum distillation on the obtained organic phase until the volume is unchanged to obtain a mixture b;
and S22, adding the mixture B, glacial acetic acid and aluminum silicate into a three-neck flask, setting the temperature at 60 ℃ and the rotating speed at 300r/min, adding 30% of hydrogen peroxide solution by mass fraction, reacting for 6 hours, cooling to room temperature after the reaction is finished, diluting the reaction solution with equal volume of deionized water, adjusting the pH value to 7 with 5mol/L sodium hydroxide solution, separating out the water phase, and carrying out vacuum distillation on the obtained organic phase until the volume is unchanged to obtain an auxiliary agent B.
Wherein the mol ratio of cardanol to propylene oxide in step S21 is 1: 2; the using amount of the benzyltriethylammonium chloride is 2% of the mass of the cardanol, and the molar ratio of the sodium hydroxide to the cardanol is 1: 1.2; in the step S22, the mass ratio of the mixture b, the glacial acetic acid and the 30% by mass of hydrogen peroxide solution is 3: 10: 0.7; the mass of the aluminum silicate is 50 percent of the mass of the mixture b.
Example 2
A preparation method of a special material for a 5G optical fiber sheath by taking recycled polyethylene as a matrix comprises the following steps:
firstly, weighing the following raw materials in parts by weight: 50 parts of base material, 0.2 part of light stabilizer, 0.2 part of 2-hydroxy-4-n-octoxy benzophenone, 25 parts of chloroprene rubber, 15 parts of alpha-methylstyrene-acrylonitrile copolymer, 3 parts of calcium carbonate, 0.3 part of accelerator TMDT, 05 parts of anti-aging agent and 0.3 part of plasticizer;
secondly, mixing the matrix material, the light stabilizer and the 2-hydroxy-4-n-octoxy benzophenone for 12min, starting discharging when the temperature of the internal mixer reaches 140 ℃, and cooling to obtain a first mixture;
thirdly, feeding the chloroprene rubber, the alpha-methylstyrene-acrylonitrile copolymer, the calcium carbonate, the accelerant TMDT, the anti-aging agent, the plasticizer and the first mixture into an internal mixer, and mixing for 8min at 110 ℃ to obtain a second mixture; and putting the second mixture into a screw extruder, and carrying out melt extrusion to obtain the special material for the 5G optical fiber sheath with the recycled polyethylene as the matrix.
Wherein the light stabilizer is a hindered amine light stabilizer; the anti-aging agent is one of anti-aging agents 4010 NA; the plasticizer is phthalate plasticizer.
Wherein, the matrix material is prepared by the following steps:
after being cleaned, the polyethylene reclaimed materials are dried for 5 hours at the temperature of 100 ℃, and the dried polyethylene reclaimed materials are crushed into particles of about 20 mm; uniformly mixing the crushed polyethylene reclaimed material and paraffin oil, adding polyamide resin, an auxiliary agent A, an auxiliary agent B, calcium oxide and oxidized polyethylene wax, and uniformly mixing; adding into a double-screw extruder, extruding at 210 deg.C, 220 deg.C, 230 deg.C, 235 deg.C, 230 deg.C, 220 deg.C, water-cooling, drawing into strips, granulating, and drying at 100 deg.C for 5 hr to obtain base material.
Wherein the mass ratio of the polyethylene reclaimed material to the paraffin oil to the polyamide resin to the additive A to the additive B to the calcium oxide to the oxidized polyethylene wax is 10: 0.01: 10: 0.2: 0.7: 0.1: 7.
the additive A is prepared by the following steps:
step S11, adding maleic anhydride into a three-neck flask, setting the temperature to be 60 ℃ and the rotating speed to be 300r/min, heating for 8min, dropping eleostearic acid into the three-neck flask through a constant-pressure dropping funnel, controlling the dropping speed, finishing dropping eleostearic acid within 35min, after finishing dropping, raising the temperature to 85 ℃, keeping the rotating speed unchanged, continuing to react for 5h, and after finishing the reaction, reducing the temperature to room temperature to obtain a mixture a;
and step S12, adding the mixture a into a three-neck flask, setting the temperature to be 80 ℃ and the rotating speed to be 200r/min, then adding 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, stirring for 8min, then raising the temperature to 155 ℃, keeping the temperature unchanged, continuing stirring for 6h, and cooling to room temperature after the stirring is finished to obtain the assistant A.
Wherein the mass ratio of the maleic anhydride to the eleostearic acid in the step S11 is 3: 7; in the step S12, the mass ratio of the mixture a to the 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide is 2: 1.
the auxiliary B is prepared by the following steps:
step S21, adding cardanol, benzyltriethylammonium chloride and propylene oxide into a three-neck flask, setting the temperature to 82 ℃ and the rotating speed to 200r/min, stirring for 4h, cooling to 60 ℃, adding 8mol/L sodium hydroxide solution, keeping the temperature to 58 ℃ and the rotating speed to 300r/min, continuing stirring for 3h, cooling to room temperature after stirring is finished, diluting the obtained reaction liquid with deionized water of the same volume, adjusting the pH value to 7 with 5mol/L hydrochloric acid solution, separating out the water phase, and carrying out vacuum distillation on the obtained organic phase until the volume is unchanged to obtain a mixture b;
and S22, adding the mixture B, glacial acetic acid and aluminum silicate into a three-neck flask, setting the temperature at 60 ℃ and the rotating speed at 300r/min, adding 30% of hydrogen peroxide solution by mass fraction, reacting for 6 hours, cooling to room temperature after the reaction is finished, diluting the reaction solution with equal volume of deionized water, adjusting the pH value to 7 with 5mol/L sodium hydroxide solution, separating out the water phase, and carrying out vacuum distillation on the obtained organic phase until the volume is unchanged to obtain an auxiliary agent B.
Wherein the mol ratio of cardanol to propylene oxide in step S21 is 1: 2; the using amount of the benzyltriethylammonium chloride is 3% of the mass of the cardanol, and the molar ratio of the sodium hydroxide to the cardanol is 1: 1.3; in the step S22, the mass ratio of the mixture b, the glacial acetic acid and the 30% by mass of hydrogen peroxide solution is 3: 11: 0.8; the mass of the aluminum silicate is 50 percent of the mass of the mixture b.
Example 3
A preparation method of a special material for a 5G optical fiber sheath by taking recycled polyethylene as a matrix comprises the following steps:
firstly, weighing the following raw materials in parts by weight: 60 parts of matrix material, 0.3 part of light stabilizer, 0.3 part of 2-hydroxy-4-n-octoxy benzophenone, 30 parts of chloroprene rubber, 20 parts of alpha-methylstyrene-acrylonitrile copolymer, 4 parts of calcium carbonate, 0.5 part of accelerator TMDT, 0.6 part of anti-aging agent and 0.4 part of plasticizer;
secondly, mixing the matrix material, the light stabilizer and the 2-hydroxy-4-n-octoxy benzophenone for 15min, starting discharging when the temperature of the internal mixer reaches 150 ℃, and cooling to obtain a first mixture;
thirdly, feeding the chloroprene rubber, the alpha-methylstyrene-acrylonitrile copolymer, the calcium carbonate, the accelerant TMDT, the anti-aging agent, the plasticizer and the first mixture into an internal mixer, and mixing for 10min at 120 ℃ to obtain a second mixture; and putting the second mixture into a screw extruder, and carrying out melt extrusion to obtain the special material for the 5G optical fiber sheath with the recycled polyethylene as the matrix.
Wherein the light stabilizer is a hindered amine light stabilizer; the anti-aging agent is anti-aging agent H; the plasticizer is phthalate plasticizer.
Wherein, the matrix material is prepared by the following steps:
after being cleaned, the polyethylene reclaimed materials are dried for 6 hours at the temperature of 100 ℃, and the dried polyethylene reclaimed materials are crushed into particles of about 20 mm; uniformly mixing the crushed polyethylene reclaimed material and paraffin oil, adding polyamide resin, an auxiliary agent A, an auxiliary agent B, calcium oxide and oxidized polyethylene wax, and uniformly mixing; adding into a double-screw extruder, extruding at 210 deg.C, 220 deg.C, 230 deg.C, 235 deg.C, 230 deg.C and 220 deg.C, water-cooling, drawing into strips, granulating, and drying at 100 deg.C for 6 hr to obtain base material.
Wherein the mass ratio of the polyethylene reclaimed material to the paraffin oil to the polyamide resin to the additive A to the additive B to the calcium oxide to the oxidized polyethylene wax is 10: 0.01: 10: 0.3: 0.8: 0.2: 8.
the additive A is prepared by the following steps:
step S11, adding maleic anhydride into a three-neck flask, setting the temperature to be 60 ℃ and the rotating speed to be 300r/min, heating for 10min, dropping eleostearic acid into the three-neck flask through a constant-pressure dropping funnel, controlling the dropping speed, finishing dropping the eleostearic acid within 40min, after finishing dropping, raising the temperature to 90 ℃, keeping the rotating speed unchanged, continuing to react for 6h, and reducing the temperature to room temperature to obtain a mixture a after finishing the reaction;
step S12, adding the mixture a into a three-neck flask, setting the temperature to be 80 ℃ and the rotating speed to be 200r/min, then adding 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, stirring for 10min, then raising the temperature to 160 ℃, keeping the temperature unchanged, continuing stirring for 7h, and cooling to room temperature after the stirring is finished to obtain the assistant A.
Wherein the mass ratio of the maleic anhydride to the eleostearic acid in the step S11 is 7: 14; in the step S12, the mass ratio of the mixture a to the 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide is 9: 4.
the auxiliary B is prepared by the following steps:
step S21, adding cardanol, benzyltriethylammonium chloride and propylene oxide into a three-neck flask, setting the temperature at 84 ℃ and the rotating speed at 200r/min, stirring for 4 hours, cooling to 60 ℃, adding 8mol/L sodium hydroxide solution, keeping the temperature at 60 ℃ and the rotating speed at 300r/min, continuing stirring for 3 hours, cooling to room temperature after stirring is finished, diluting the obtained reaction liquid with deionized water of the same volume, adjusting the pH value to 7 with 5mol/L hydrochloric acid solution, separating out the water phase, and carrying out vacuum distillation on the obtained organic phase until the volume is unchanged to obtain a mixture b;
and S22, adding the mixture B, glacial acetic acid and aluminum silicate into a three-neck flask, setting the temperature at 60 ℃ and the rotating speed at 300r/min, adding 30% of hydrogen peroxide solution by mass fraction, reacting for 6 hours, cooling to room temperature after the reaction is finished, diluting the reaction solution with equal volume of deionized water, adjusting the pH value to 7 with 5mol/L sodium hydroxide solution, separating out the water phase, and carrying out vacuum distillation on the obtained organic phase until the volume is unchanged to obtain an auxiliary agent B.
Wherein the mol ratio of cardanol to propylene oxide in step S21 is 1: 2; the using amount of the benzyltriethylammonium chloride is 4% of the mass of the cardanol, and the molar ratio of the sodium hydroxide to the cardanol is 1: 1.4; in the step S22, the mass ratio of the mixture b, the glacial acetic acid and the 30% by mass of hydrogen peroxide solution is 3: 12: 0.9; the mass of the aluminum silicate is 50 percent of the mass of the mixture b.
Comparative example 1
The comparative example is a common material special for 5G optical fiber sheaths on the market.
The 5G optical fiber sheath special material of the examples 1 to 3 and the comparative example 1 is subjected to performance test, the tensile strength and the elongation at break are tested according to GB/T1040, and the test results are shown as follows:
TABLE 1
As can be seen from table 1 above, the 5G optical fiber sheath special material prepared in examples 1-3 using recycled polyethylene as a matrix is superior to the commercially available 5G optical fiber sheath special material in the aspects of tensile strength, elongation at break, and performance test after aging.
The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.
Claims (8)
1. A preparation method of a special material for a 5G optical fiber sheath by taking recycled polyethylene as a matrix is characterized by comprising the following steps:
firstly, weighing the following raw materials in parts by weight: 40-60 parts of matrix material, 0.1-0.3 part of light stabilizer, 0.1-0.3 part of 2-hydroxy-4-n-octoxy benzophenone, 20-30 parts of chloroprene rubber, 10-20 parts of alpha-methylstyrene-acrylonitrile copolymer, 2-4 parts of calcium carbonate, 0.1-0.5 part of accelerator TMDT, 0.4-0.6 part of anti-aging agent and 0.2-0.4 part of plasticizer;
secondly, mixing the matrix material, the light stabilizer and the 2-hydroxy-4-n-octoxy benzophenone for 10-15min, starting discharging when the temperature of the internal mixer reaches 130-;
thirdly, feeding the chloroprene rubber, the alpha-methylstyrene-acrylonitrile copolymer, the calcium carbonate, the accelerant TMDT, the anti-aging agent, the plasticizer and the first mixture into an internal mixer, and mixing for 5-10min at the temperature of 100-120 ℃ to obtain a second mixture; and putting the second mixture into a screw extruder, and carrying out melt extrusion to obtain the special material for the 5G optical fiber sheath with the recycled polyethylene as the matrix.
2. The preparation method of the special material for the 5G optical fiber sheath taking the recycled polyethylene as the matrix according to claim 1, wherein the light stabilizer is a hindered amine light stabilizer; the anti-aging agent is one of anti-aging agent MB, anti-aging agent H and anti-aging agent 4010 NA; the plasticizer is phthalate plasticizer.
3. The method for preparing the material special for the 5G optical fiber sheath by using the recycled polyethylene as the matrix according to claim 1, wherein the matrix material is prepared by the following steps:
after being cleaned, the polyethylene reclaimed materials are dried for 4-6h at the temperature of 100 ℃, and the dried polyethylene reclaimed materials are crushed into particles with the size of about 20 mm; uniformly mixing the crushed polyethylene reclaimed material and paraffin oil, adding polyamide resin, an auxiliary agent A, an auxiliary agent B, calcium oxide and oxidized polyethylene wax, and uniformly mixing; adding into a double-screw extruder, extruding at 210 deg.C, 220 deg.C, 230 deg.C, 235 deg.C, 230 deg.C and 220 deg.C, water-cooling, drawing into strips, granulating, and drying at 100 deg.C for 4-6 hr to obtain base material.
4. The method for preparing the material special for the 5G optical fiber sheath by using the recycled polyethylene as the matrix according to claim 3, wherein the mass ratio of the recycled polyethylene material to the paraffin oil to the polyamide resin to the auxiliary agent A to the auxiliary agent B to the calcium oxide to the oxidized polyethylene wax is 10: 0.01: 10: 0.1-0.3: 0.6-0.8: 0.1-0.2: 6-8.
5. The method for preparing the material special for the 5G optical fiber sheath by using the recycled polyethylene as the matrix according to claim 3, wherein the additive A is prepared by the following steps:
step S11, adding maleic anhydride into a three-neck flask, setting the temperature to be 60 ℃ and the rotating speed to be 300r/min, heating for 6-10min, dropping eleostearic acid into the three-neck flask through a constant-pressure dropping funnel, controlling the dropping speed, finishing dropping the eleostearic acid within 30-40min, after finishing dropping, raising the temperature to 80-90 ℃, keeping the rotating speed unchanged, continuing to react for 4-6h, finishing the reaction, and reducing the temperature to room temperature to obtain a mixture a;
step S12, adding the mixture a into a three-neck flask, setting the temperature at 80 ℃ and the rotating speed at 200r/min, then adding 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, stirring for 6-10min, then increasing the temperature to 150-.
6. The method for preparing the special material for the 5G optical fiber sheath by using the recycled polyethylene as the matrix according to claim 5, wherein the mass ratio of the maleic anhydride to the eleostearic acid in the step S11 is 5-7: 14; in the step S12, the mass ratio of the mixture a to the 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide is 7-9: 4.
7. the method for preparing the special material for the 5G optical fiber sheath by using the recycled polyethylene as the matrix according to claim 3, wherein the auxiliary agent B is prepared by the following steps:
step S21, adding cardanol, benzyltriethylammonium chloride and propylene oxide into a three-neck flask, setting the temperature to be 80-84 ℃ and the rotating speed to be 200r/min, stirring for 4h, cooling to 60 ℃, adding 8mol/L sodium hydroxide solution, keeping the temperature to be 56-60 ℃ and the rotating speed to be 300r/min, continuing stirring for 3h, cooling to room temperature after stirring is finished, diluting the obtained reaction liquid with deionized water of the same volume, adjusting the pH value to be 7 with 5mol/L hydrochloric acid solution, separating out the water phase, and carrying out pressure distillation on the obtained organic phase until the volume is unchanged to obtain a mixture b;
and S22, adding the mixture B, glacial acetic acid and aluminum silicate into a three-neck flask, setting the temperature at 60 ℃ and the rotating speed at 300r/min, adding 30% of hydrogen peroxide solution by mass fraction, reacting for 6 hours, cooling to room temperature after the reaction is finished, diluting the reaction solution with equal volume of deionized water, adjusting the pH value to 7 with 5mol/L sodium hydroxide solution, separating out the water phase, and carrying out vacuum distillation on the obtained organic phase until the volume is unchanged to obtain an auxiliary agent B.
8. The method for preparing the material special for the 5G optical fiber sheath by using the recycled polyethylene as the matrix according to claim 7, wherein the molar ratio of the eugenol to the propylene oxide in the step S21 is 1: 2; the using amount of the benzyltriethylammonium chloride is 2-4% of the mass of the cardanol, and the molar ratio of the sodium hydroxide to the cardanol is 1: 1.2-1.4; in the step S22, the mass ratio of the mixture b, the glacial acetic acid and the 30% by mass of hydrogen peroxide solution is 3: 10-12: 0.7-0.9; the mass of the aluminum silicate is 50 percent of the mass of the mixture b.
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