CN112321934B - Irradiation crosslinking low-smoke halogen-free flame-retardant polyolefin material for 150 ℃ American standard electronic wire and preparation method thereof - Google Patents
Irradiation crosslinking low-smoke halogen-free flame-retardant polyolefin material for 150 ℃ American standard electronic wire and preparation method thereof Download PDFInfo
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Abstract
The invention discloses an irradiation crosslinking low-smoke halogen-free flame retardant polyolefin material for a 150 ℃ American standard electronic wire and a preparation method thereof, wherein the polyolefin material comprises the following components: 20-35 parts of metallocene polyethylene; 40-60 parts of ethylene-ethyl acetate copolymer; 10-18 parts of ethylene-octene copolymer; 9-16 parts of a compatilizer; 90-130 parts of a main flame retardant; 5-15 parts of a synergistic flame retardant; 0.5-1.5 parts of a coupling agent; 2-4 parts of an antioxidant; 0.8-2.4 parts of auxiliary crosslinking agent; 1.5-3 parts of a lubricant. The wire and cable prepared from the irradiation crosslinking low-smoke halogen-free flame retardant polyolefin material for the 150 ℃ American standard electronic wire has excellent mechanical property, heat resistance level and stable flame retardant property, the system is environment-friendly and does not contain halogen, and the electronic wire prepared from the halogen-free flame retardant polyolefin material can meet the requirement of the 150 ℃ American standard electronic wire.
Description
Technical Field
The invention relates to the technical field of low-smoke halogen-free flame-retardant cable materials, in particular to an irradiation crosslinking low-smoke halogen-free flame-retardant polyolefin material for a 150 ℃ American standard electronic wire and a preparation method thereof.
Background
The quality of the electronic wire as a connecting wire in the electrical equipment is directly related to the safety use performance of the electrical equipment, and with the continuous updating and development of the electrical equipment, new requirements such as higher temperature resistance, flame retardance and the like are put forward for the electronic wire. Currently, polyvinyl chloride is used as a base material or a halogen-containing polyolefin material in most electronic wire markets at home and abroad, although the flame retardant property is excellent, a halogen-containing flame retardant system can release a large amount of toxic smoke and corrosive hydrogen halide gas during combustion, and the life safety of people is seriously threatened when a fire disaster occurs. With the development of the flame retardant technology of wire and cable materials, people have higher and higher requirements on flame retardance, high-performance and environment-friendly flame retardant wires and cables become mainstream products of all wire and cable varieties in countries such as Europe, America and Japan, governments strictly forbid use or import non-environment-friendly wires and cables, and halogen-free environment-friendly cable materials are a market trend to replace halogen-containing cable materials.
At present, low-smoke halogen-free flame retardance is mainly realized in polyolefin, the temperature resistance level of a low-smoke halogen-free polyolefin flame retardant material meeting the requirements of American standard electronic wire flame retardance VW-1 on the market is generally 80-105 ℃, and the high flame retardance is maintained by mainly filling a large amount of flame retardant, so that the material is difficult to process, and the mechanical property, the temperature resistance, the scratch and abrasion resistance and the flame retardance stability of the material are poor. The American standard electronic wire capable of resisting the temperature of 125 ℃ and 150 ℃ has higher requirements on the mechanical property and the temperature resistance of the material (the strength is more than 13.79MPa, the elongation at break is more than 300%), and particularly, the cable made of the polyolefin material capable of resisting the temperature of 150 ℃ has the frosting phenomenon due to more antioxidants, and the performance and the appearance are influenced after long-term use.
Disclosure of Invention
The invention aims to provide an irradiation crosslinking low-smoke halogen-free flame retardant polyolefin material for a 150 ℃ American standard electronic wire, which is mainly used for the American standard electronic wire meeting the UL1581 standard requirement and has the characteristics of excellent mechanical property, stable flame retardant property, low smoke, environmental protection, no toxicity, high temperature resistance grade and no blooming.
In order to realize the purpose, the technical scheme adopted by the invention is as follows:
an irradiation crosslinking low-smoke halogen-free flame-retardant polyolefin material for a American-standard electronic wire at 150 ℃ is composed of the following raw materials in parts by weight:
the total weight parts of the resin MLDPE, the POE, the EVA and the compatilizer are 100 parts.
Wherein the MLDPE has Shore hardness of 48-54D, melt index of 3-8g/10min at 190 deg.C, and density of 0.918-0.935g/cm 3 The metallocene polyethylene of (a); the EVA is an ethylene-ethyl acetate copolymer with the vinyl acetate unit content of 20-30%, and the melt index is 2-5g/10min at 190 ℃; the POE is an ethylene-octene copolymer with the Shore hardness of 68-88A, and the melt index is 0.5-3.5g/10min at 190 ℃.
Further, the compatilizer is one or more of polyethylene grafted maleic anhydride (PE-MAH), ethylene-octene copolymer grafted maleic anhydride (POE-MAH) and ethylene-vinyl acetate grafted maleic anhydride (EVA-MAH). The addition of the maleic anhydride modified polypropylene can improve the dispersibility and compatibility of the filler in resin, the grafting ratio of the maleic anhydride is 0.9-1.2%, and the melt index is 0.5-2g/10 min.
Furthermore, the main flame retardant is a halogen-free flame retardant, the using amount of the main flame retardant is 90-130 parts, and the flame retardant is one or more of aluminum hydroxide, magnesium hydroxide, aluminum diethylphosphinate, melamine cyanurate and melamine polyphosphate. The synergistic flame retardant is one or more of organic modified montmorillonite, piperazine phosphate, nano silicon dioxide and silane polymer.
Further, the main flame retardant and the synergistic flame retardant are treated by a coupling agent, and the process comprises the following steps: weighing the main flame retardant and the synergistic flame retardant according to the weight ratio, putting the main flame retardant and the synergistic flame retardant into a high-speed stirrer, setting the initial temperature to be 45-55 ℃, uniformly spraying the coupling agent through an atomizing device under the condition of the rotating speed of 400-600rpm, and mixing at high speed for 5-8 min.
Furthermore, the coupling agent is one or more of vinyltris (2-methoxyethoxy) silane, N-phenyl-gamma-aminopropyltrimethoxysilane, gamma-aminopropyltriethoxysilane and triisostearoyl isopropyl titanate.
Further, the antioxidant is a plurality of combinations of tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester (antioxidant 1010), tris [2, 4-di-tert-butylphenyl ] phosphite (antioxidant 168), didecyl thiodipropionate (antioxidant DLTDP), pentaerythritol tetrakis (3-lauryl thiopropionate) (antioxidant 412S), bis (2, 4-di-tert-butylphenyl) propionic acid ] pentaerythritol diphosphite (antioxidant 626), N, N' -bis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl ] hydrazine (copper inhibitor MD 1024).
Further, the auxiliary crosslinking agent is one or two of triallyl isocyanurate (TAIC) and trimethylolpropane trimethacrylate (TMPTMA).
Further, the lubricant is one or more of high molecular weight silicone, silica gel, stearic acid, polyethylene wax, ethylene bisstearoyl and erucamide.
In order to achieve the aim, the preparation method of the irradiation crosslinking low-smoke halogen-free flame retardant polyolefin material for the American standard electronic wire at 150 ℃ comprises the following steps:
(1) weighing the main flame retardant and the synergistic flame retardant according to the weight ratio, putting the main flame retardant and the synergistic flame retardant into a high-speed stirrer, setting the initial temperature to be 45-55 ℃, uniformly spraying the coupling agent through an atomizing device under the condition of the rotation speed of 400-600rpm, and mixing at high speed for 5-8min to obtain a premix 1;
(2) weighing MLDPE, EVA, POE, premix 1, compatilizer, antioxidant, auxiliary crosslinking agent and lubricant according to the weight ratio, sequentially adding the obtained mixture into an internal mixer for banburying and plasticizing, wherein the banburying initial temperature is set to be 90-110 ℃, the rotating speed is 40-45rpm, the banburying time is 10-15min, and the glue discharging temperature is 145-155 ℃;
(3) extruding the mixture subjected to banburying in the step (2) by an extruder, and performing air cooling granulation;
wherein the extruder is a double-stage extruder, and the temperature of the double screws is set as follows: the first zone is 155-155 ℃, the second zone is 150-155 ℃, the third zone is 150-155 ℃, the fourth zone is 145-150 ℃, the fifth zone is 135-140 ℃, the sixth zone is 130-135 ℃, the seventh zone is 125-130 ℃, and the eighth zone is 120-125 ℃; the single screw temperature was set as: the temperature of the first zone is 150-155 ℃, the temperature of the second zone is 145-150 ℃, the temperature of the third zone is 140-145 ℃, the temperature of the fourth zone is 135-140 ℃, the temperature of the head is 135-140 ℃, the granules are conveyed by a cyclone pipe to enter a 75-80 ℃ homogenization tank for drying for 1-2h, and finally the 150 ℃ American standard electronic wire irradiation crosslinking low-smoke halogen-free flame retardant polyolefin material is obtained.
The irradiation crosslinking low-smoke halogen-free flame-retardant polyolefin material for the 150 ℃ American standard electronic wire is particularly suitable for the American standard electronic wire with high temperature resistance, high flame retardance and environmental protection requirements.
The invention has the following beneficial effects:
1. the invention relates to a low-smoke halogen-free flame-retardant polyolefin material for irradiation crosslinking of a American standard electronic wire at 150 ℃ and a preparation method thereof, which adopts a method of pretreating powder by a coupling agent and ensures the uniform dispersion of the powder through two-stage extrusion.
2. The invention relates to a 150 ℃ American standard irradiation crosslinking low-smoke halogen-free flame retardant polyolefin material for electronic wires and a preparation method thereof, which adopts a method of compounding a plurality of flame retardants and flame retardant synergists, integrates the advantages of various halogen-free environment-friendly flame retardants, adopts different flame retardant compounding schemes aiming at different electronic wire gauges, ensures the flame retardant stability, and obtains higher mechanical property and better processing property by reasonably matching matrix resin.
3. The invention relates to a low-smoke halogen-free flame-retardant polyolefin material for irradiation crosslinking of a 150 ℃ American standard electronic wire and a preparation method thereof, which adopt a method of compounding a plurality of antioxidants, and the electronic wire prepared by the material passes the test requirement of the American standard 150 ℃ temperature resistance grade UL1581 after irradiation, has the strength retention rate of more than 80 percent, the elongation at break retention rate of more than 80 percent, does not crack in the flexibility test, and does not frost after being placed for a long time.
Detailed Description
The inventor carries out long-term deep research on a flame-retardant system, reasonably designs the resin proportion, the flame retardant proportion, the antioxidant proportion and improves the processing technology, and obtains the irradiation crosslinking low-smoke halogen-free flame-retardant polyolefin material for the American-standard electronic wire with high flame retardance, high temperature resistance and excellent mechanical property.
The technical concept of the invention is as follows:
the invention adopts a new flame-retardant technology, achieves a synergistic flame-retardant effect by proportioning the flame retardants in different flame-retardant mechanisms, reduces the dosage of the flame retardants, enables the wire to stably reach the flame-retardant grade VW-1, maintains the mechanical properties of the material, and improves the temperature resistance grade of the material to 150 ℃ by compounding the antioxidant, and does not frost after long-term use.
The following examples of the present invention are described in detail, and the professional and scientific terms used in the examples have the same meaning as those familiar to those skilled in the art, and the parts used are parts by weight, and the experimental methods for the specific conditions used in the examples are generally determined according to the national standards, or according to the international general standards if no national standards exist.
Example 1
The irradiation crosslinking halogen-free environment-friendly flame retardant polyolefin material for the American standard electronic wire at 150 ℃ comprises the following raw material components in parts by weight:
the total weight parts of the resin MLDPE, the POE, the EVA and the compatilizer are 100 parts.
Wherein the MLDPE has Shore hardness of 53D, melt index of 4.5g/10min and density of 0.923g/cm 3 The metallocene polyethylene has the characteristics of high tensile strength and high elongation at break, not only improves the strength of the material, but also enables the wire to be extruded and bright;
the EVA is an ethylene-ethyl acetate copolymer with the vinyl acetate unit content of 28 percent, the melt index is 3.0g/10min, the compatibility between the material and the flame retardant is improved due to the higher VA content, and the material performance can be better maintained in long-term high-temperature aging; the POE is an ethylene-octene copolymer with Shore hardness of 78A, the melt index is 1.5g/10min, and the POE has good heat resistance and flexibility, so that the elongation at break and the softness of the material are improved;
the compatilizer is maleic anhydride grafted linear low density polyethylene (PE-MAH), the melt index is 1.0g/10min, and maleic anhydride grafted ethylene-octene copolymer (POE-MAH), the melt index is 0.9g/10min, the melt index is respectively 5 parts and 8 parts, the addition of the compatilizer promotes the adhesive force among resin matrixes and the interfacial compatibility between resin and powder, so that the flame retardant can be better dispersed, and the flame retardant stability is improved;
the main flame retardant is aluminum hydroxide with the content of 75 parts, preferably the particle size of 1.0 mu m, is mainly used as filling to reduce the gel content of the material, and when combustion occurs, the aluminum hydroxide is decomposed to generate water vapor and aluminum oxide to dilute the concentration of combustible substances and oxygen; the content of the diethyl aluminum hypophosphite is 24 parts, the particle size of the diethyl aluminum hypophosphite is 16 mu m, and under the condition that the flame temperature is close to the flame temperature, the diethyl aluminum hypophosphite is fully cracked to generate a phosphorus-containing free radical quencher, so that the gas-phase flame retardant effect is realized; melamine cyanurate, the content is 16, the grain size is 3.5 microns, it is heated and decomposed as the gas source and produces the concentration of gaseous dilution combustible and oxygen;
the synergistic flame retardant is nano silicon dioxide, the content is 3.5 parts, and the silane polymer is 5 parts;
the coupling agent is vinyl tri (2-methoxyethoxy) silane with the content of 1.3 parts;
the content of the antioxidant 1010 is 1.2 parts, the content of the antioxidant DLTDP is 0.5 part, the content of 412S is 0.8 part, the content of the antioxidant 626 is 0.8 part, and the content of the copper resistant agent MD1024 is 0.5 part;
the auxiliary crosslinking agent is triallyl isocyanurate (TAIC) with the content of 1.1 part;
the lubricant is high molecular weight silicone, the content of the high molecular weight silicone is 1.4 parts, and the molecular weight of the high molecular weight silicone is 10 ten thousand; polyethylene wax with the content of 0.3 part;
the preparation method of the invention comprises the following steps:
(1) weighing the main flame retardant and the synergistic flame retardant according to the weight ratio, putting the main flame retardant and the synergistic flame retardant into a high-speed stirrer, setting the initial temperature to be 50 ℃, uniformly spraying the coupling agent through an atomizing device under the condition of the rotating speed of 500rpm, and mixing at a high speed for 5min to obtain a premix 1;
(2) weighing the resin, the antioxidant, the auxiliary crosslinking agent, the lubricant and the premix 1 according to the weight ratio, and putting the mixture into an internal mixer for internal mixing plasticization, wherein the internal mixing initial temperature is set to be 100 ℃, the rotating speed is 45rpm, the internal mixing time is 12min, and the glue discharging temperature is 150 ℃;
(3) extruding the mixture subjected to banburying in the step (2) by an extruder, and performing air cooling granulation;
wherein the extruder is a double-stage extruder, and the temperature of the double screws is set as follows: the first zone is 155-155 ℃, the second zone is 150-155 ℃, the third zone is 150-155 ℃, the fourth zone is 145-150 ℃, the fifth zone is 135-140 ℃, the sixth zone is 130-135 ℃, the seventh zone is 125-130 ℃, and the eighth zone is 120-125 ℃; the single screw temperature was set as: the temperature of the first area is 150-155 ℃, the temperature of the second area is 145-150 ℃, the temperature of the third area is 140-145 ℃, the temperature of the fourth area is 135-140 ℃, the temperature of the head is 135-140 ℃, the granules are conveyed by a cyclone tube to enter a homogenizing tank at 80 ℃ for drying for 1h, and finally the irradiation crosslinking low-smoke halogen-free flame retardant polyolefin material for the American-standard electronic wire at 150 ℃ is obtained.
The product of example 1 was tested for properties, and the values of the properties are shown in Table 1.
0.5mm prepared for the product in example 1 2 The performance test data after wire irradiation is shown in table 2.
Example 2
An irradiation crosslinking low-smoke halogen-free environment-friendly flame-retardant polyolefin material for a American standard electronic wire at 150 ℃, which comprises the following raw material components in percentage by weight:
the total weight parts of the resin MLDPE, the POE, the EVA and the compatilizer are 100 parts.
The MLDPE is 20 parts of metallocene polyethylene with the hardness of Shore 49D and the melt index of 3.2g/10 min; the EVA is an ethylene-ethyl acetate copolymer with the vinyl acetate unit content of 28%, the melt index is 3.5g/10min, and the content is 54 parts; the POE is an ethylene-octene copolymer with the Shore hardness of 68A, the melt index is 0.6g/10min, and the content is 16 parts; the compatilizer is maleic anhydride grafted linear low-density polyethylene (PE-MAH) with the melt index of 1.0g/10min and the content of 9 parts, and the maleic anhydride grafted ethylene-vinyl acetate with the melt index of 3.2g/10min and the content of 3 parts;
the main flame retardant is aluminum hydroxide with the content of 60 parts and the particle size of 1.0 mu m; diethyl aluminum hypophosphite with the particle size of 16 mu m and the content of 32 parts; melamine cyanurate salt with the particle size of 3.5 microns and the content of 18 parts; the synergistic flame retardant is nano silicon dioxide with the content of 3.5 parts, and the content of organic modified montmorillonite is 2.5 parts;
the coupling agent is vinyl tri (2-methoxyethoxy) silane with the content of 1.3 parts;
the content of the antioxidant 1010 is 1.2 parts, the content of the antioxidant DLTDP is 0.5 part, the content of 412S is 0.8 part, the content of the antioxidant 626 is 0.8 part, and the content of the copper resistant agent MD1024 is 0.5 part;
the auxiliary crosslinking agent is triallyl isocyanurate (TAIC) with the content of 1.1 part;
the lubricant is high molecular weight silicone with the content of 1.4 parts, and polyethylene wax with the content of 0.3 part;
the preparation method is the same as that of example 1
The product of example 2 was tested for properties, and the values of the properties are shown in Table 1.
0.5mm prepared for the product in example 2 2 The performance test data after wire irradiation is shown in table 2.
Example 3:
the irradiation crosslinking halogen-free environment-friendly flame retardant polyolefin material for the American standard electronic wire at 150 ℃ comprises the following raw material components in parts by weight:
the MLDPE is metallocene polyethylene with the hardness of 51D and the melt index of 3.0g/10min, and the content is 28 parts; the EVA is an ethylene-ethyl acetate copolymer with the vinyl acetate unit content of 26%, the melt index is 5.0g/10min, and the content is 48 parts; the POE is an ethylene-octene copolymer with Shore hardness of 84A, the melt index is 2.5g/10min, and the content is 12 parts; the compatilizer is maleic anhydride grafted linear low density polyethylene (PE-MAH), the melt index is 1.0g/10min, and the content is 12 parts;
the main flame retardant is aluminum hydroxide with the particle size of 1.0 mu m and the content of 60 parts; 30 parts of magnesium hydroxide with the grain size of 0.8 mu m; melamine polyphosphate with the grain size of 5.0 mu m and the content of 25 parts; the synergistic flame retardant is focused piperazine phosphate, and the content is 15 parts;
the coupling agent is vinyl tri (2-methoxyethoxy) silane with the content of 0.85 part, and N-phenyl-gamma-aminopropyl trimethoxy silane with the content of 0.6 part;
1.0 part of antioxidant 1010, 0.6 part of antioxidant DLTDP, 0.6 part of 412S, 0.6 part of antioxidant 626, and 0.6 part of copper resisting agent MD 1024;
the auxiliary crosslinking agent is triallyl isocyanurate (TAIC) with the content of 1.0 part;
the lubricant is high molecular weight silicone with the content of 1.4 parts, polyethylene wax with the content of 0.4 part, and erucamide with the content of 0.2 part;
the preparation method is the same as example 1
The product of example 3 was tested for properties, and the values of the properties are shown in Table 1.
0.5mm prepared for the product in example 3 2 The performance test data after wire irradiation is shown in table 2.
The products of examples 1-3 were tested for properties, and the values of the properties are shown in Table 1.
TABLE 1
0.5mm prepared for the products of examples 1-3 2 The performance test data after the wire irradiation is shown in table 2:
TABLE 2
As can be seen from the indexes in tables 1 and 2, the irradiation crosslinking low-smoke halogen-free flame retardant polyolefin material for the American standard electronic wire at 150 ℃ has very high temperature resistance grade and flame retardant grade while maintaining good mechanical property.
The above-described embodiments are only intended to provide a better understanding of the present invention and do not limit the scope of the present invention in any way, which can be embodied in many different ways as defined and covered by the claims. Any other technical or scientific method, which is defined by the scope of the claims of the present application, is also intended to be covered by the scope of the present invention.
Claims (8)
1. A preparation method of an irradiation crosslinking low-smoke halogen-free flame-retardant polyolefin material for a American-standard electronic wire at 150 ℃ comprises the following raw materials in parts by weight:
the resin matrix consists of MLLDPE, POE, EVA and a compatilizer, and the total weight part is 100 parts; the main flame retardant is the combination of aluminum hydroxide, aluminum diethylphosphinate and melamine cyanurate salt, or the combination of aluminum hydroxide, magnesium hydroxide and melamine polyphosphate;
the method comprises the following process steps:
(1) weighing the main flame retardant and the synergistic flame retardant according to the weight ratio, putting the main flame retardant and the synergistic flame retardant into a high-speed stirrer, setting the initial temperature to be 45-55 ℃, uniformly spraying the coupling agent through an atomizing device under the condition of the rotation speed of 400-600rpm, and mixing at high speed for 5-8min to obtain a premix 1;
(2) weighing MLLDPE, EVA, POE, premix 1, compatilizer, antioxidant, auxiliary crosslinking agent and lubricant according to the weight ratio, sequentially adding the obtained mixture into an internal mixer for banburying and plasticizing, wherein the banburying initial temperature is set to be 90-110 ℃, the rotating speed is 40-45rpm, the banburying time is 10-15min, and the glue discharging temperature is 145-155 ℃;
(3) extruding the mixture subjected to banburying in the step (2) by an extruder, and performing air cooling granulation;
wherein the extruder is a double-stage extruder, and the temperature of the double screws is set as follows: the temperature of the first zone is 155-160 ℃, the temperature of the second zone is 150-155 ℃, the temperature of the third zone is 150-155 ℃, the temperature of the fourth zone is 145-150 ℃, the temperature of the fifth zone is 135-140 ℃, the temperature of the sixth zone is 130-135 ℃, the temperature of the seventh zone is 125-130 ℃, and the temperature of the eighth zone is 120-125 ℃; the single screw temperature was set as: the temperature of the first zone is 150-155 ℃, the temperature of the second zone is 145-150 ℃, the temperature of the third zone is 140-145 ℃, the temperature of the fourth zone is 135-140 ℃, the temperature of the head is 135-140 ℃, the granules are conveyed by a cyclone pipe to enter a 75-80 ℃ homogenization tank for drying for 1-2h, and finally the 150 ℃ American standard electronic wire irradiation crosslinking low-smoke halogen-free flame retardant polyolefin material is obtained.
2. The method of claim 1, wherein: the MLLDPE has Shore hardness of 48-54D, melt index of 3-8g/10min at 190 ℃, and density of 0.918-0.935g/cm 3 The metallocene polyethylene of (a);
the EVA is an ethylene-ethyl acetate copolymer with the content of vinyl acetate units of 20-30%, and the melt index is 2-5g/10min at 190 ℃;
the POE is an ethylene-octene copolymer with the Shore hardness of 68-88A, and the melt index is 0.5-3.5g/10min at 190 ℃;
the compatilizer is one or more of polyethylene grafted maleic anhydride, ethylene-octene copolymer grafted maleic anhydride and ethylene-vinyl acetate grafted maleic anhydride.
3. The production method according to claim 1, characterized in that: the synergistic flame retardant is one or more of organic modified montmorillonite, piperazine phosphate, nano silicon dioxide and silane polymer.
4. The method of claim 1, wherein: the coupling agent is one or more of vinyl tri (2-methoxyethoxy) silane, N-phenyl-gamma-aminopropyltrimethoxysilane, gamma-aminopropyltriethoxysilane and triisostearoyl isopropyl titanate.
5. The method of claim 1, wherein: the antioxidant is a plurality of combinations of tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester (antioxidant 1010), tris [2, 4-di-tert-butylphenyl ] phosphite (antioxidant 168), didecyl-dipropionate (antioxidant DLTDP), pentaerythritol tetrakis (3-lauryl-thiopropionate) (antioxidant 412S), bis (2, 4-di-tert-butylphenyl) propionic acid ] pentaerythritol diphosphite (antioxidant 626), and N, N' -bis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl ] hydrazine (copper resistant agent MD 1024).
6. The method of claim 1, wherein: the auxiliary crosslinking agent is one or two of triallyl isocyanurate and trimethylolpropane trimethacrylate.
7. The method of claim 1, wherein: the lubricant is one or more of high molecular weight silicone, silica gel, stearic acid, polyethylene wax, ethylene bis stearamide and erucamide.
8. The irradiation crosslinking low-smoke halogen-free flame retardant polyolefin material for the American standard electronic wire at 150 ℃ prepared by the preparation method of claim 1.
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| CN113372644A (en) * | 2021-05-14 | 2021-09-10 | 宝新高分子科技(广州)有限公司 | High-flame-retardant cross-linked low-smoke halogen-free polyolefin insulating material and preparation method thereof |
| CN113527798A (en) * | 2021-06-21 | 2021-10-22 | 杭州永通新材料有限公司 | Special halogen-free low-smoke flame-retardant polyolefin sheath material for B1-grade cable |
| CN113956563A (en) * | 2021-10-18 | 2022-01-21 | 远东电缆有限公司 | High-thermal-conductivity low-smoke halogen-free flame-retardant polyolefin cable material and preparation method thereof |
| CN114350022B (en) * | 2021-12-03 | 2023-12-22 | 国家能源集团宁夏煤业有限责任公司 | Anti-yellowing antioxidant and application thereof, anti-yellowing polyolefin composition and application thereof, anti-yellowing polyolefin and preparation method and application thereof |
| CN114213711A (en) * | 2021-12-14 | 2022-03-22 | 深圳市锦昊辉实业发展有限公司 | Preparation method of halogen-free composite flame retardant, flame-retardant polyolefin and preparation method thereof |
| CN114752136B (en) * | 2022-03-15 | 2023-09-26 | 金发科技股份有限公司 | High-flame-retardance polyolefin material with excellent mechanical properties, and preparation method and application thereof |
| CN115368669B (en) * | 2022-09-21 | 2024-01-05 | 金发科技股份有限公司 | Polyolefin composition and preparation method and application thereof |
| CN116041834A (en) * | 2022-11-28 | 2023-05-02 | 苏州铂玛新材料有限公司 | Sunlight-resistant oil-resistant high-temperature-resistant low-halogen high-flame-retardance polyolefin material and preparation method and application thereof |
| CN115850845A (en) * | 2022-12-02 | 2023-03-28 | 广东安拓普聚合物科技有限公司 | High-flame-retardant polyolefin sheath material for automobile electronic wire |
| CN115710396A (en) * | 2022-12-08 | 2023-02-24 | 合肥兴联通讯有限公司 | B1-level dropless low-smoke halogen-free polyolefin cable material and preparation method thereof |
| CN115895266B (en) * | 2022-12-09 | 2023-08-25 | 广东安拓普聚合物科技有限公司 | Low-smoke flame-retardant cable material and preparation method thereof |
| CN116003899A (en) * | 2023-02-16 | 2023-04-25 | 广东安拓普聚合物科技有限公司 | Composite material based on bio-based polyethylene and preparation method thereof |
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