CN108794863B - Efficient flame-retardant cable material and preparation method thereof - Google Patents
Efficient flame-retardant cable material and preparation method thereof Download PDFInfo
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
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Abstract
The invention provides a high-efficiency flame-retardant cable material and a preparation method thereof, wherein the high-efficiency flame-retardant cable material comprises the following raw materials: low-density polyethylene, ethylene-vinyl acetate copolymer, modified aluminum hypophosphite, moroxydine, ethylene glycol stearate, polypropylene wax, photocatalyst, aluminum-magnesium alloy powder and antioxidant; the modified aluminum hypophosphite comprises the following components in percentage by mass of 6: 2: 9: 1, aluminum hypophosphite, methylene dicarbamate, phenyl silicone oil and polyimide; the preparation method of the high-efficiency flame-retardant cable material comprises the following steps: s1, weighing the raw materials; s2, dispersing moroxydine into the modified aluminum hypophosphite; s3, mixing the raw materials; and S4, carrying out bracing, granulating, extruding and granulating to obtain the high-efficiency flame-retardant cable material. The cable material provided by the invention is reasonable in formula, the addition amount of raw materials playing a flame retardant role is small, the preparation method is simple, and the obtained cable material has excellent aging resistance, antibacterial property, corrosion resistance, flame retardance and mechanical properties.
Description
Technical Field
The invention relates to the technical field of cable materials, in particular to a high-efficiency flame-retardant cable material and a preparation method thereof.
Background
Cables are wire products used to transmit electrical energy, magnetic energy, information and to effect electromagnetic energy conversion. The cable mainly comprises a conductor, a conductor shielding layer, an insulating shielding layer, a buffer layer, a metal sheath, an outer sheath and the like. The outer sheath is mostly positioned on the outermost layer of the cable to play a role in protecting the cable, and at present, plastics, rubber and the like are mostly adopted as main materials. However, the traditional cable has poor flame retardancy, and is easy to cause fire, property loss and casualties, so researchers are paying more attention to the problem of poor flame retardancy of cable materials. Initially, the improvement of flame retardant properties of cables was achieved by halogen polymers, but the use of halogen-containing materials has been gradually limited because they generate a large amount of substances harmful to human bodies, instruments and equipment, or the environment during heating or burning. In order to improve the flame retardant property of the cable material, the chinese patent issued publication No.: CN 104961962B discloses a composite cable material with flame retardant effect and a preparation method thereof, in the patent, a composite flame retardant composed of sodium bicarbonate, organic silicon microspheres, antimony yellow stone powder, expandable graphite powder and zinc hydroxystannate is synergistically compounded with microencapsulated red phosphorus to achieve the flame retardant effect. However, in the patent, the addition amount of the composite flame retardant accounts for 35% of the total mass, the mass of the microencapsulated red phosphorus accounts for 8% of the total mass, and the mass sum of the two components playing a flame retardant role accounts for 43% of the total mass, so that the difficulty of dispersing the composite flame retardant and the microencapsulated red phosphorus in the cable material is increased, and the mechanical property of the cable material is deteriorated due to the addition of a large amount of additives, and the service life of the cable material is influenced. Based on the defects in the prior art, the invention provides a high-efficiency flame-retardant cable material and a preparation method thereof.
Disclosure of Invention
The invention aims to solve the problems that the existing cable material is poor in flame retardant property, the flame retardant addition amount of the flame retardant cable material is large, and the mechanical property of the cable material is easy to deteriorate.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a high-efficiency flame-retardant cable material comprises the following raw materials in parts by weight: 80-120 parts of low-density polyethylene, 10-15 parts of ethylene-vinyl acetate copolymer, 0.4-3.2 parts of modified aluminum hypophosphite, 0.1-0.4 part of moroxydine, 0.5-3 parts of ethylene glycol stearate, 0.5-3 parts of polypropylene wax, 0.4-1.6 parts of photocatalyst, 1-4 parts of aluminum-magnesium alloy powder and 0.2-0.5 part of anti-nutrient agent; the modified aluminum hypophosphite comprises the following components in percentage by mass of 6: 2: 9: 1 of aluminum hypophosphite, methylene dicarbamate, phenyl silicone oil and polyimide.
Preferably, the efficient flame-retardant cable material comprises the following raw materials in parts by weight: 90-110 parts of low-density polyethylene, 11-14 parts of ethylene-vinyl acetate copolymer, 0.6-2.4 parts of modified aluminum hypophosphite, 0.15-0.3 part of moroxydine, 1-2.5 parts of ethylene glycol stearate, 1.5-2.5 parts of polypropylene wax, 0.6-1.2 parts of photocatalyst, 2-4 parts of aluminum-magnesium alloy powder and 0.3-0.5 part of anti-nutrient agent.
Preferably, the mass ratio of the modified aluminum hypophosphite to the moroxydine is 4-8: 1, further preferably, the mass ratio of the methylene dicarbamate to the moroxydine is 6: 1.
preferably, the efficient flame-retardant cable material comprises the following raw materials in parts by weight: 100 parts of low-density polyethylene, 13 parts of ethylene-vinyl acetate copolymer, 1.5 parts of modified aluminum hypophosphite, 0.25 part of moroxydine, 1.5 parts of ethylene glycol stearate, 2 parts of polypropylene wax, 0.9 part of photocatalyst, 3 parts of aluminum magnesium alloy powder and 0.4 part of antioxidant.
The invention also provides a preparation method of the high-efficiency flame-retardant cable material, which comprises the following steps:
s1, weighing raw materials according to 80-120 parts of low-density polyethylene, 10-15 parts of ethylene-vinyl acetate copolymer, 0.4-3.2 parts of modified aluminum hypophosphite, 0.1-0.4 part of moroxydine, 0.5-3 parts of ethylene glycol stearate, 0.5-3 parts of polypropylene wax, 0.4-1.6 parts of photocatalyst, 1-4 parts of aluminum-magnesium alloy powder and 0.2-0.5 part of anti-nutritional agent for later use, wherein the modified aluminum hypophosphite is prepared by mixing the following raw materials in parts by mass: 2: 9: 1, aluminum hypophosphite, methylene dicarbamate, phenyl silicone oil and polyimide;
s2, adding moroxydine weighed in the step S1 into the modified aluminum hypophosphite, stirring for 5-15 min at the rotating speed of 100-200 r/min, and then heating to 40-60 ℃ and stirring for 10-20 min to obtain a mixture A;
s3, adding the low-density polyethylene and the ethylene-vinyl acetate copolymer weighed in the step S1 into an internal mixer for internal mixing to obtain a mixture B, then sequentially adding the ethylene glycol stearate weighed in the step S1, the polypropylene wax, the photocatalyst, the aluminum-magnesium alloy powder, the anti-oxidant and the mixture A prepared in the step S2 into the mixture B, and uniformly stirring at the rotating speed of 200-300 r/min to obtain a mixture C;
and S4, carrying out bracing and dicing on the mixture C, and carrying out extrusion and granulation by a screw rod to obtain the high-efficiency flame-retardant cable material.
Compared with the prior art, the high-efficiency flame-retardant cable material provided by the invention has the advantages that:
1. the cable material provided by the invention is reasonable in formula, low-density polyethylene is used as a main material, an ethylene-vinyl acetate copolymer is used as an auxiliary material, the dispersion effect of photocatalyst and aluminum-magnesium alloy powder in the cable material is improved by adding ethylene glycol stearate and polypropylene wax, and meanwhile, the fluidity of the cable material raw material can be improved, so that the product has excellent aging resistance, antibacterial property and corrosion resistance, and good molding processability, and the application range of the product is enlarged.
2. According to the invention, the aluminum hypophosphite is modified by the methylene dicarbamate, the phenyl silicone oil and the polyimide in a reasonable proportion, so that the surface activity of the aluminum hypophosphite can be increased, the dispersibility of the aluminum hypophosphite is improved, the modified aluminum hypophosphite obtained through modification is easily combined with moroxydine in a cable material, the flame retardant property of a product can be obviously improved, the using amount of a flame retardant is further reduced, the problems that the traditional cable material is poor in flame retardant property, the flame retardant addition amount of the flame retardant cable material is large, and the mechanical property and the flame retardant property of the cable material are easily deteriorated are effectively solved, experiments prove that the mechanical property and the flame retardant property of the product can be obviously improved by adding the modified aluminum hypophosphite and the modified aluminum hypophosphite in the cable material, and particularly, the mass ratio of the methylene: when the flame retardant performance of the cable material is 1, the flame retardant performance of the cable material is optimal, and the oxygen index can reach 46.7%;
3. the preparation method of the high-efficiency flame-retardant cable material is simple to operate, the mixing effect of the raw materials is good, the moroxydine is added into the modified aluminum hypophosphite, the moroxydine and the modified aluminum hypophosphite are fully combined and then mixed with other raw materials in the cable material, the dispersion speed of a product formed by combining the moroxydine and the modified aluminum hypophosphite in a main material can be increased, the uniformity of the product is ensured, the preparation method is suitable for industrial production, and the flame retardant property and the mechanical property of the product can be improved.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
Example 1
The invention provides a high-efficiency flame-retardant cable material which comprises the following raw materials in parts by weight: 80 parts of low-density polyethylene, 10 parts of ethylene-vinyl acetate copolymer, 0.4 part of modified aluminum hypophosphite, 0.1 part of moroxydine, 0.5 part of ethylene glycol stearate, 0.5 part of polypropylene wax, 0.4 part of photocatalyst, 1 part of aluminum magnesium alloy powder and 0.2 part of antioxidant; the modified aluminum hypophosphite comprises the following components in percentage by mass of 6: 2: 9: 1, aluminum hypophosphite, methylene dicarbamate, phenyl silicone oil and polyimide; the antioxidant is antioxidant 168.
The preparation method comprises the following steps:
s1, weighing raw materials according to 80 parts of low-density polyethylene, 10 parts of ethylene-vinyl acetate copolymer, 0.4 part of modified aluminum hypophosphite, 0.1 part of moroxydine, 0.5 part of ethylene glycol stearate, 0.5 part of polypropylene wax, 0.4 part of photocatalyst, 1 part of aluminum magnesium alloy powder and 0.2 part of antioxidant for later use;
s2, adding moroxydine weighed in the step S1 into the modified aluminum hypophosphite, stirring for 15min at the rotating speed of 100r/min, and then heating to 60 ℃ and stirring for 10min to obtain a mixture A;
s3, adding the low-density polyethylene and the ethylene-vinyl acetate copolymer weighed in the step S1 into an internal mixer for internal mixing to obtain a mixture B, then sequentially adding the ethylene glycol stearate weighed in the step S1, the polypropylene wax, the photocatalyst, the aluminum-magnesium alloy powder, the antioxidant and the mixture A prepared in the step S2 into the mixture B, and uniformly stirring at the rotating speed of 200r/min to obtain a mixture C;
and S4, carrying out bracing and dicing on the mixture C, and carrying out extrusion and granulation by a screw rod to obtain the high-efficiency flame-retardant cable material.
Example 2
The invention provides a high-efficiency flame-retardant cable material which comprises the following raw materials in parts by weight: 100 parts of low-density polyethylene, 13 parts of ethylene-vinyl acetate copolymer, 1.5 parts of modified aluminum hypophosphite, 0.25 part of moroxydine, 1.5 parts of ethylene glycol stearate, 2 parts of polypropylene wax, 0.9 part of photocatalyst, 3 parts of aluminum magnesium alloy powder and 0.4 part of antioxidant; the modified aluminum hypophosphite comprises the following components in percentage by mass of 6: 2: 9: 1, aluminum hypophosphite, methylene dicarbamate, phenyl silicone oil and polyimide; the antioxidant is antioxidant 626.
The preparation method comprises the following steps:
s1, weighing each raw material according to 100 parts of low-density polyethylene, 13 parts of ethylene-vinyl acetate copolymer, 1.5 parts of modified aluminum hypophosphite, 0.25 part of moroxydine, 1.5 parts of ethylene glycol stearate, 2 parts of polypropylene wax, 0.9 part of photocatalyst, 3 parts of aluminum magnesium alloy powder and 0.4 part of antioxidant for later use;
s2, adding moroxydine weighed in the step S1 into the modified aluminum hypophosphite, stirring for 10min at the rotating speed of 150r/min, and then heating to 50 ℃ and stirring for 15min to obtain a mixture A;
s3, adding the low-density polyethylene and the ethylene-vinyl acetate copolymer weighed in the step S1 into an internal mixer for internal mixing to obtain a mixture B, then sequentially adding the ethylene glycol stearate weighed in the step S1, the polypropylene wax, the photocatalyst, the aluminum-magnesium alloy powder, the antioxidant and the mixture A prepared in the step S2 into the mixture B, and uniformly stirring at the rotating speed of 250r/min to obtain a mixture C;
and S4, carrying out bracing and dicing on the mixture C, and carrying out extrusion and granulation by a screw rod to obtain the high-efficiency flame-retardant cable material.
Example 3
The invention provides a high-efficiency flame-retardant cable material which comprises the following raw materials in parts by weight: 120 parts of low-density polyethylene, 15 parts of ethylene-vinyl acetate copolymer, 3.2 parts of modified aluminum hypophosphite, 0.4 part of moroxydine, 3 parts of ethylene glycol stearate, 3 parts of polypropylene wax, 1.6 parts of photocatalyst, 4 parts of aluminum magnesium alloy powder and 0.5 part of antioxidant; the modified aluminum hypophosphite comprises the following components in percentage by mass of 6: 2: 9: 1, aluminum hypophosphite, methylene dicarbamate, phenyl silicone oil and polyimide; the antioxidant is antioxidant 1010.
The preparation method comprises the following steps:
s1, weighing the raw materials according to 120 parts of low-density polyethylene, 15 parts of ethylene-vinyl acetate copolymer, 3.2 parts of modified aluminum hypophosphite, 0.4 part of moroxydine, 3 parts of ethylene glycol stearate, 3 parts of polypropylene wax, 1.6 parts of photocatalyst, 4 parts of aluminum magnesium alloy powder and 0.5 part of antioxidant for later use;
s2, adding moroxydine weighed in the step S1 into the modified aluminum hypophosphite, stirring for 5min at the rotating speed of 200r/min, and then heating to 40 ℃ and stirring for 20min to obtain a mixture A;
s3, adding the low-density polyethylene and the ethylene-vinyl acetate copolymer weighed in the step S1 into an internal mixer for internal mixing to obtain a mixture B, then sequentially adding the ethylene glycol stearate weighed in the step S1, the polypropylene wax, the photocatalyst, the aluminum-magnesium alloy powder, the antioxidant and the mixture A prepared in the step S2 into the mixture B, and uniformly stirring at the rotating speed of 300r/min to obtain a mixture C;
and S4, carrying out bracing and dicing on the mixture C, and carrying out extrusion and granulation by a screw rod to obtain the high-efficiency flame-retardant cable material.
Comparative example 1
According to the Chinese patent authorization publication number: the composite cable material with the flame retardant effect is prepared from CN 104961962B.
Comparative example 2
The invention provides a high-efficiency flame-retardant cable material which comprises the following raw materials in parts by weight: 80 parts of low-density polyethylene, 10 parts of ethylene-vinyl acetate copolymer, 0.4 part of aluminum hypophosphite, 0.1 part of moroxydine, 0.5 part of ethylene glycol stearate, 0.5 part of polypropylene wax, 0.4 part of photocatalyst, 1 part of aluminum magnesium alloy powder and 0.2 part of antioxidant; the antioxidant is antioxidant 168.
The preparation method comprises the following steps:
s1, weighing raw materials according to 80 parts of low-density polyethylene, 10 parts of ethylene-vinyl acetate copolymer, 0.4 part of modified aluminum hypophosphite, 0.1 part of moroxydine, 0.5 part of ethylene glycol stearate, 0.5 part of polypropylene wax, 0.4 part of photocatalyst, 1 part of aluminum magnesium alloy powder and 0.2 part of antioxidant for later use;
s2, adding moroxydine weighed in the step S1 into aluminum hypophosphite, stirring for 15min at the rotating speed of 100r/min, and then heating to 60 ℃ and stirring for 10min to obtain a mixture A;
s3, adding the low-density polyethylene and the ethylene-vinyl acetate copolymer weighed in the step S1 into an internal mixer for internal mixing to obtain a mixture B, then sequentially adding the ethylene glycol stearate weighed in the step S1, the polypropylene wax, the photocatalyst, the aluminum-magnesium alloy powder, the antioxidant and the mixture A prepared in the step S2 into the mixture B, and uniformly stirring at the rotating speed of 200r/min to obtain a mixture C;
and S4, carrying out bracing and dicing on the mixture C, and carrying out extrusion and granulation by a screw rod to obtain the high-efficiency flame-retardant cable material.
Comparative example 3
The invention provides a high-efficiency flame-retardant cable material which comprises the following raw materials in parts by weight: 80 parts of low-density polyethylene, 10 parts of ethylene-vinyl acetate copolymer, 0.4 part of modified aluminum hypophosphite, 0.1 part of moroxydine, 0.5 part of ethylene glycol stearate, 0.5 part of polypropylene wax, 0.4 part of photocatalyst, 1 part of aluminum magnesium alloy powder and 0.2 part of antioxidant; the modified aluminum hypophosphite comprises the following components in percentage by mass of 6: 2: 9: 1, aluminum hypophosphite, methylene dicarbamate, phenyl silicone oil and polyimide; the antioxidant is antioxidant 168.
The preparation method comprises the following steps:
s1, weighing raw materials according to 80 parts of low-density polyethylene, 10 parts of ethylene-vinyl acetate copolymer, 0.4 part of modified aluminum hypophosphite, 0.1 part of moroxydine, 0.5 part of ethylene glycol stearate, 0.5 part of polypropylene wax, 0.4 part of photocatalyst, 1 part of aluminum magnesium alloy powder and 0.2 part of antioxidant for later use;
s2, adding the low-density polyethylene and the ethylene-vinyl acetate copolymer weighed in the step S1 into an internal mixer for internal mixing to obtain a mixture A, then sequentially adding the moroxydine, the modified aluminum hypophosphite, the ethylene glycol stearate, the polypropylene wax, the photocatalyst, the aluminum-magnesium alloy powder and the antioxidant weighed in the step S1 into the mixture A, and uniformly stirring at the rotating speed of 200r/min to obtain a mixture B;
and S4, carrying out bracing and dicing on the mixture B, extruding by a screw rod, and carrying out granulation to obtain the high-efficiency flame-retardant cable material.
The cable materials prepared in examples 1-3 and the cable materials prepared in comparative examples 1-3 were subjected to performance tests, and the results are shown in table 1.
Table 1:
| test items | Tensile Strength (MPa) | Elongation at Break (%) | Oxygen index (%) | UL-94 |
| Example 1 | 18.8 | 586 | 40.4 | V-O |
| Example 2 | 25.4 | 623 | 46.7 | V-O |
| Example 3 | 19.3 | 599 | 41.6 | V-O |
| Comparative example 1 | 14.2 | 531 | 35.2 | V-O |
| Comparative example 2 | 9.8 | 456 | 33.3 | V-1 |
| Comparative example 3 | 10.3 | 479 | 34.5 | V-0 |
The experimental results in table 1 show that the cable materials prepared in examples 1 to 3 have excellent flame retardant properties, the oxygen index can reach more than 40%, the tensile strength can still reach more than 18MPa, and the elongation at break can reach more than 580%, and in comparison with the cable materials prepared in comparative examples 1 to 3, the oxygen index, the tensile strength and the elongation at break are all lower than those of the cable materials prepared in examples 1 to 3 of the present invention, in addition, the UL-94 flame retardant rating test of the cable materials prepared in examples 1 to 3 can reach a V-0 level, which indicates that the cable materials provided by the present invention have both excellent flame retardant properties and excellent mechanical properties.
The modified aluminum hypophosphite and moroxydine in example 1 were replaced by the modified aluminum hypophosphite and moroxydine in the weight parts in table 2 under the same conditions as those of the cable material prepared in example 1, and the performance of the prepared cable material was tested, and the results are shown in table 2.
Table 2:
| modified aluminum hypophosphite | Morpholinoguanidine | Tensile Strength (MPa) | Elongation at Break (%) | Oxygen index (%) |
| 0 | 0.5 | 12.4 | 433 | 32.6 |
| 0.5 | 0 | 10.5 | 425 | 33.9 |
| 0.125 | 0.375 | 12.6 | 458 | 34.6 |
| 0.167 | 0.333 | 12.7 | 471 | 34.7 |
| 0.25 | 0.25 | 15.3 | 525 | 35.8 |
| 0.333 | 0.167 | 16.6 | 542 | 36.7 |
| 0.375 | 0.125 | 16.9 | 548 | 37.1 |
| 0.4 | 0.1 | 18.8 | 586 | 40.4 |
| 0.417 | 0.083 | 19.2 | 603 | 42.5 |
| 0.429 | 0.071 | 25.1 | 618 | 45.3 |
| 0.438 | 0.062 | 20.3 | 605 | 41.5 |
| 0.444 | 0.056 | 19.0 | 592 | 40.9 |
| 0.45 | 0.05 | 16.9 | 553 | 37.6 |
| 0.462 | 0.038 | 16.5 | 541 | 36.9 |
| 0.469 | 0.031 | 16.4 | 533 | 36.6 |
| 0.484 | 0.016 | 16.2 | 529 | 35.8 |
| 0.485 | 0.015 | 15.8 | 512 | 35.2 |
| 0.486 | 0.014 | 12.6 | 463 | 34.6 |
| 0.467 | 0.013 | 12.5 | 439 | 34.1 |
The experimental results in table 2 show that the oxygen index of the cable material obtained by singly using the modified aluminum hypophosphite or moroxydine is only about 33%, the tensile strength and the elongation at break are also low, when the modified aluminum hypophosphite and the moroxydine are compounded and added, the tensile strength, the elongation at break and the oxygen index of the obtained cable material are all improved, but when the weight part of the modified aluminum hypophosphite is less than 0.25 or more than 0.485, the tensile strength, the elongation at break and the oxygen index of the obtained cable material are not ideal, and when the weight part of the modified aluminum hypophosphite is between 0.25 and 0.485 (namely the mass ratio of the modified aluminum hypophosphite to the moroxydine is 1-32: 1), the tensile strength of the obtained cable material can reach more than 15MPa, the elongation at break can reach more than 500%, the oxygen index can reach more than 35%, the mechanical property and the flame retardant property are both improved to a certain extent, especially when the weight part of the modified aluminum hypophosphite is between 0.4 and 0.444 (namely the weight part of the modified aluminum hypophosphite and the moroxydine are between 0.444 (namely The mass ratio is 4-8: 1), the tensile strength of the obtained cable material can reach more than 18MPa, the elongation at break can reach more than 580%, the oxygen index can reach more than 40%, the mechanical property and the flame retardant property are remarkably improved, and when the weight part of the modified aluminum hypophosphite is 0.429 (namely the mass ratio of the modified aluminum hypophosphite to the moroxydine is 6: 1), the oxygen index of the obtained cable material can reach 45.3%, the tensile strength is 25.1MPa, the elongation at break can reach 618%, and the comprehensive performance is optimal.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. The efficient flame-retardant cable material is characterized by comprising the following raw materials in parts by weight: 80-120 parts of low-density polyethylene, 10-15 parts of ethylene-vinyl acetate copolymer, 0.4-3.2 parts of modified aluminum hypophosphite, 0.1-0.4 part of moroxydine, 0.5-3 parts of ethylene glycol stearate, 0.5-3 parts of polypropylene wax, 0.4-1.6 parts of photocatalyst, 1-4 parts of aluminum-magnesium alloy powder and 0.2-0.5 part of antioxidant; the modified aluminum hypophosphite comprises the following components in percentage by mass of 6: 2: 9: 1 of aluminum hypophosphite, methylene dicarbamate, phenyl silicone oil and polyimide.
2. The efficient flame-retardant cable material as claimed in claim 1, characterized by comprising the following raw materials in parts by weight: 90-110 parts of low-density polyethylene, 11-14 parts of ethylene-vinyl acetate copolymer, 0.6-2.4 parts of modified aluminum hypophosphite, 0.15-0.3 part of moroxydine, 1-2.5 parts of ethylene glycol stearate, 1.5-2.5 parts of polypropylene wax, 0.6-1.2 parts of photocatalyst, 2-4 parts of aluminum-magnesium alloy powder and 0.3-0.5 part of antioxidant.
3. The efficient flame-retardant cable material as claimed in claim 1 or 2, wherein the mass ratio of the modified aluminum hypophosphite to the moroxydine is 4-8: 1.
4. the efficient flame-retardant cable material as claimed in claim 1 or 2, characterized by comprising the following raw materials in parts by weight: 100 parts of low-density polyethylene, 13 parts of ethylene-vinyl acetate copolymer, 1.5 parts of modified aluminum hypophosphite, 0.25 part of moroxydine, 1.5 parts of ethylene glycol stearate, 2 parts of polypropylene wax, 0.9 part of photocatalyst, 3 parts of aluminum magnesium alloy powder and 0.4 part of antioxidant.
5. The high-efficiency flame-retardant cable material as claimed in claim 1 or 2, wherein the antioxidant is antioxidant 168, antioxidant 626 or antioxidant 1010.
6. The preparation method of the high-efficiency flame-retardant cable material is characterized by comprising the following steps of:
s1, weighing raw materials according to 80-120 parts of low-density polyethylene, 10-15 parts of ethylene-vinyl acetate copolymer, 0.4-3.2 parts of modified aluminum hypophosphite, 0.1-0.4 part of moroxydine, 0.5-3 parts of ethylene glycol stearate, 0.5-3 parts of polypropylene wax, 0.4-1.6 parts of photocatalyst, 1-4 parts of aluminum-magnesium alloy powder and 0.2-0.5 part of antioxidant for later use, wherein the modified aluminum hypophosphite is prepared by mixing the following raw materials in parts by mass: 2: 9: 1, aluminum hypophosphite, methylene dicarbamate, phenyl silicone oil and polyimide;
s2, adding moroxydine weighed in the step S1 into the modified aluminum hypophosphite, stirring for 5-15 min at the rotating speed of 100-200 r/min, and then heating to 40-60 ℃ and stirring for 10-20 min to obtain a mixture A;
s3, adding the low-density polyethylene and the ethylene-vinyl acetate copolymer weighed in the step S1 into an internal mixer for internal mixing to obtain a mixture B, then sequentially adding the ethylene glycol stearate weighed in the step S1, the polypropylene wax, the photocatalyst, the aluminum-magnesium alloy powder, the antioxidant and the mixture A prepared in the step S2 into the mixture B, and uniformly stirring at the rotating speed of 200-300 r/min to obtain a mixture C;
and S4, carrying out bracing and dicing on the mixture C, and carrying out extrusion and granulation by a screw rod to obtain the high-efficiency flame-retardant cable material.
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| CN1894319A (en) * | 2003-12-17 | 2007-01-10 | 通用电气公司 | Flame-retardant polyester composition |
| CN101268138A (en) * | 2005-07-22 | 2008-09-17 | 伊塔尔麦奇化学股份公司 | Flame retardant polymeric compositions |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9051449B2 (en) * | 2011-06-08 | 2015-06-09 | Italmatch Chemicals S.P.A. | Flame retarded extruded polystyrene foams |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1894319A (en) * | 2003-12-17 | 2007-01-10 | 通用电气公司 | Flame-retardant polyester composition |
| CN101268138A (en) * | 2005-07-22 | 2008-09-17 | 伊塔尔麦奇化学股份公司 | Flame retardant polymeric compositions |
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| "Study of using aluminum hypophosphite as a flame retardantfor low‐density polyethylene";Tian Shenghui et al.;《Fire and Materials》;20170529;第41卷;983-992 * |
| "次磷酸铝协同硼酸锌阻燃聚乙烯";邝淼等;《应用化学》;20161031;第33卷(第10期);1147-1153 * |
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