CN113956588B - Anti-aging flame-retardant PVC material, preparation method and application thereof in wires or cables - Google Patents
Anti-aging flame-retardant PVC material, preparation method and application thereof in wires or cables Download PDFInfo
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- CN113956588B CN113956588B CN202111460619.7A CN202111460619A CN113956588B CN 113956588 B CN113956588 B CN 113956588B CN 202111460619 A CN202111460619 A CN 202111460619A CN 113956588 B CN113956588 B CN 113956588B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
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- C08K2003/265—Calcium, strontium or barium carbonate
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
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Abstract
The invention discloses an anti-aging flame-retardant PVC material, a preparation method and application thereof for wires or cables, wherein the material comprises the following raw materials: PVC, 5-10 parts of calcium zinc stabilizer, octyl phthalate, calcium carbonate, zinc stearate, antioxidant, acidic lignin, zinc stannate, dimer acid diisocyanate and ALLCHEM360; the preparation method of the wire or the cable adopts the material preparation, the acidic lignin, the zinc stearate, the zinc stannate, the dimer acid diisocyanate and the ALLCHEM360 are mixed for 10 to 30 minutes, and then the mixture is ball-milled for 2 to 8 hours to obtain a ball-milled mixture; and mixing the ball-milled mixture and other raw materials to obtain a precursor, and carrying out melt blending, extrusion and granulation on the precursor to obtain the composite material. Use of a wire or cable, use of the material for the preparation of a wire or cable. The prepared environment-friendly anti-aging flame-retardant PVC wire and cable material is high in tensile strength, strong in anti-aging capability, good in flame retardance, simple in preparation process, low-carbon, environment-friendly and easy to realize industrialization.
Description
Technical Field
The invention relates to the field of high polymer materials, in particular to an anti-aging flame-retardant PVC material, and a preparation method and application thereof in wires or cables.
Background
Polyvinyl chloride (PVC) is relatively inexpensive, has a high heat resistance and oxygen index due to its high chlorine content, up to 56%, is not flammable, and has good overall properties, and thus is most widely used in cables, particularly as jackets. However, the PVC can generate HCl gas during combustion, and has great toxicity and corrosivity and more dense smoke; and the existing flame-retardant PVC wire and cable material is not in accordance with the layout of green economic development because the added antimony trioxide flame retardant has toxicity and poor ultraviolet aging resistance. Therefore, the development of green, environment-friendly, anti-aging and flame-retardant PVC wire and cable materials is the future development trend of PVC wires and cables.
The industrial lignin is a papermaking byproduct, and has low price and wide source. The lignin is a natural organic matter with aromatic structure and high burning residual carbon amount, and has good flame retardant property, ultraviolet resistance and rigidity; and because the molecule contains polar groups such as hydroxyl, ether bond, unsaturated double bond and the like, the organic polymer has good reactivity and good compatibility with polar polymer materials, and can generate acting force with strong electron-withdrawing atoms. The environment-friendly anti-aging flame-retardant PVC wire and cable material with excellent mechanical properties can be prepared by compounding modified lignin with a nontoxic flame retardant and then blending the modified lignin with a PVC material.
Therefore, the modified acidic lignin is compounded with zinc stannate for use, and is compounded with PVC, a heat stabilizer, a plasticizer and a filler, so that the prepared environment-friendly anti-aging flame-retardant PVC wire and cable material is high in tensile strength, strong in anti-aging capability, good in flame retardance, simple in preparation process, good in dielectric property, low-carbon, environment-friendly and good in application prospect.
Disclosure of Invention
The invention aims to provide a green environment-friendly anti-aging flame-retardant PVC wire and cable material, which can solve the technical problems related to the background technology.
In order to achieve the purpose, the technical scheme of the invention is as follows: an anti-aging flame-retardant PVC material comprises the following raw materials: 100 parts of PVC, 5-10 parts of calcium-zinc stabilizer, 30-40 parts of octyl phthalate, 40-70 parts of calcium carbonate, 1-2 parts of zinc stearate, 2 parts of antioxidant, 1-10 parts of acidic lignin, 0.5-1 part of zinc stannate, dimer acid diisocyanate and ALLCHEM360.
The invention discloses an anti-aging flame-retardant PVC material which comprises the following raw materials: 100 parts of PVC, 6-8 parts of calcium-zinc stabilizer, 30-40 parts of octyl phthalate, 45-70 parts of calcium carbonate, 1-1.5 parts of zinc stearate, 2 parts of antioxidant, 1-10 parts of acidic lignin, 0.5-1 part of zinc stannate, dimer acid diisocyanate and ALLCHEM360.
Further, the anti-aging flame-retardant PVC material comprises the following raw materials: 100 parts by mass of PVC, 6 or/and 7 or/and 8 parts by mass of calcium-zinc stabilizer, 30 or/and 32 or/and 35 or/and 36 or/and 40 parts by mass of octyl phthalate, 45 or/and 55 or/and 60 or/and 70 parts by mass of calcium carbonate, 1 or/and 1.5 parts by mass of zinc stearate, 2 parts by mass of antioxidant, 1 or/and 3 or/and 5 or/and 6 or/and 10 parts by mass of acidic lignin, 0.5 or/and 0.8 or/and 1 part by mass of zinc stannate, dimer acid diisocyanate and ALLCHEM360.
Further, the mass of the dimer acid diisocyanate is 5wt% or/and 10wt% or/and 12wt% or/and 20wt% of the acidic lignin, and the mass of ALLCHEM360 is 0.6wt% or/and 0.8wt% or/and 1wt% of the dimer acid diisocyanate.
In the invention, the amount of the acidic lignin is 2-5 parts by mass.
In the present invention, the acidic lignin has a water content of 0 to 0.5% (excluding the endpoint 0).
On the basis of researching materials, the invention also provides a preparation method of the wire or the cable, the preparation method adopts the materials to prepare, and the preparation method comprises the following steps: mixing acidic lignin, zinc stearate, zinc stannate, dimer acid diisocyanate and ALLCHEM360 for 10-30 minutes, and then ball-milling the mixture for 2-8 hours to obtain a ball-milled mixture; and mixing the ball-milled mixture, PVC, a calcium-zinc stabilizer, octyl phthalate, calcium carbonate and an antioxidant to obtain a precursor, and melting, blending, extruding and granulating the precursor to obtain the nano-composite material.
In the preparation method, the ball milling time is 4-6 hours.
In the invention, the particle size of the mixture after ball milling is as follows: 2-10 microns, preferably 4-6 microns.
In the invention, in the extrusion, the temperature parameter of the extruder is 110-180 ℃.
In the invention, in the extrusion, the screw rotating speed of the extruder is 50rpm-250rpm.
On the basis of researching materials, the invention also provides the application of the wire or the cable, wherein the application is the application of the anti-aging flame-retardant PVC material in preparing the wire or the cable.
The preparation method comprises the steps of mixing at low speed for 3 minutes and at high speed for 2 minutes, and repeating for 2-6 times;
the acidic lignin, zinc stearate, zinc stannate, dimer acid diisocyanate and ALLCHEM360 mixture are ball milled in a ball mill at high speed, and the friction temperature is required to be over 70 ℃.
The preparation method of the calcium-zinc stabilizer comprises the steps of carrying out saponification reaction on 70 parts by weight of a mixture of calcium hydroxide and zinc hydroxide (the weight ratio of calcium to zinc is 0.114.
The antioxidant is antioxidant 1010, antioxidant 2246, antioxidant 1076, TBP, DPD, etc.
ALLCHEM360 available from a commercial company of the Shanghai-Y-class of practical use is ALLCHEM360.
Compared with the related art, the environment-friendly anti-aging flame-retardant PVC wire and cable material provided by the invention has the following advantages:
the lignin is introduced in the invention, because the lignin contains a large amount of aromatic structures, the lignin has good absorption effect on ultraviolet light and can play a role in resisting ultraviolet aging; the lignin has strong burning and carbonizing capability and can play a role in flame retarding in cooperation with zinc stannate; the lignin contains a large amount of hydroxyl groups, and can form hydrogen bonds with the octyl phthalate, so that the function of inhibiting the migration of the octyl phthalate is achieved.
The invention requires that the water content of the acidic lignin is less than or equal to 0.5 percent, so as to avoid hardening in the ball milling process and reduce the electrical breakdown resistance of the PVC wire and cable material.
According to the invention, acidic lignin, zinc stearate, zinc stannate, dimer acid diisocyanate and ALLCHEM360 are mixed in a high-speed mixer and then are subjected to high-speed ball milling in a ball mill, and the friction temperature needs to be above 70 ℃, so that the reaction product of the acidic lignin and the dimer acid diisocyanate, the zinc stearate and the zinc stannate can be controlled in particle size and uniformly mixed while the acidic lignin can react with the dimer acid diisocyanate. Therefore, the dispersion of the reactant of the acidic lignin and the dimer acid diisocyanate, the zinc stearate and the zinc stannate in the PVC is increased, and the high mechanical property of the PVC wire and cable material is further improved.
The mixture of the acidic lignin, the zinc stearate, the zinc stannate, the dimer acid diisocyanate and the ALLCHEM360 is subjected to high-speed ball milling in a ball mill, so that when the acidic lignin reacts with the dimer acid diisocyanate, part of nano-scale zinc stearate and zinc stannate is fixed in a generated oligourethane molecular grid, and the improvement of the flame retardant property is facilitated.
According to the invention, acidic lignin and dimer acid diisocyanate react under the action of a catalyst ALLCHEM360 to obtain a novel polyurethane oligomer, which has double functions of a carbon source and a gas source, and can be used in combination with zinc stannate to obtain a better flame retardant effect.
In the invention, dimer acid diisocyanate is used as a modifier of lignin, and ALLCHEM360 is used as a catalyst, because the two substances are nontoxic and environment-friendly chemical substances.
The invention controls the particle sizes of the reactant of the acidic lignin and the dimer acid diisocyanate, the zinc stearate and the zinc stannate within the range of 2-10 microns, so as to avoid the negative influence on the performance of the PVC wire and cable material caused by reagglomeration due to too small particles or difficult dispersion due to too large particle sizes. When the particle size of the PVC base material is controlled within the range of 2-10 microns, the PVC base material is moderate in size, can be uniformly dispersed in the PVC base material, and can also show small-size effect to increase the mechanics of the material.
The acidic lignin used by the invention is derived from papermaking industrial wastes, and has wide sources and low price. Therefore, the introduction of the lignin can reduce the cost of PVC wire and cable materials, realize the high-value application of the lignin and have good social and economic effects.
Detailed Description
The present invention will be described in detail with reference to the following embodiments in order to make the objects, features and advantages thereof more comprehensible. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in many ways different from those described herein, and it will be apparent to those skilled in the art that similar modifications may be made without departing from the spirit of the invention, and the invention is therefore not limited to the specific embodiments disclosed below.
Example 1
Mixing 6 parts of acidic lignin, 0.5 part of zinc stannate, 1 part of zinc stearate, dimer acid diisocyanate (10% of acidic lignin) and ALLCHEM360 (0.8% of dimer acid diisocyanate) in a high-speed mixer for 15 minutes, and then carrying out high-speed ball milling in a ball mill for 5 hours to obtain a mixture with the D50 of 5.5 micrometers; then adding the mixture, 100 parts of PVC, 6 parts of calcium-zinc stabilizer, 35 parts of octyl phthalate, 55 parts of calcium carbonate and 2 parts of antioxidant into a high-speed mixer for mixing to obtain a precursor; and melting, blending, extruding and granulating the precursor by a double-screw extruder to obtain the environment-friendly anti-aging flame-retardant PVC wire and cable material. The first zone of the double-screw extruder is 110 ℃, the second zone is 130 ℃, the third zone is 150 ℃, the fourth zone is 160 ℃, the fifth zone is 170 ℃, the sixth zone is 180 ℃, the head is 175 ℃ and the screw rotating speed is 120rpm.
Example 2
Mixing 10 parts of acidic lignin, 0.8 part of zinc stannate, 1.5 parts of zinc stearate, dimer acid diisocyanate (12% of the acidic lignin) and ALLCHEM360 (0.8% of the dimer acid diisocyanate) in a high-speed mixer for 20 minutes, and then carrying out high-speed ball milling in a ball mill for 6 hours to obtain a mixture with the D50 of 4.6 micrometers; then adding the mixture, 100 parts of PVC, 8 parts of calcium-zinc stabilizer, 40 parts of octyl phthalate, 60 parts of calcium carbonate and 2 parts of antioxidant into a high-speed mixer for mixing to obtain a precursor; and melting, blending, extruding and granulating the precursor by a double-screw extruder to obtain the environment-friendly anti-aging flame-retardant PVC wire and cable material. The first zone of the double-screw extruder is 120 ℃, the second zone is 135 ℃, the third zone is 150 ℃, the fourth zone is 165 ℃, the fifth zone is 170 ℃, the sixth zone is 180 ℃, the head is 175 ℃ and the screw rotating speed is 150rpm.
Example 3
Mixing 5 parts of acidic lignin, 1 part of zinc stannate, 1.5 parts of zinc stearate, dimer acid diisocyanate (20% of acidic lignin) and ALLCHEM360 (1% of dimer acid diisocyanate) in a high-speed mixer for 30 minutes, and then performing high-speed ball milling in a ball mill for 8 hours to obtain a mixture with D50 of 3.2 micrometers; then adding the mixture, 100 parts of PVC, 8 parts of calcium-zinc stabilizer, 30 parts of octyl phthalate, 70 parts of calcium carbonate and 2 parts of antioxidant into a high-speed mixer for mixing to obtain a precursor; and melting, blending, extruding and granulating the precursor by a double-screw extruder to obtain the environment-friendly anti-aging flame-retardant PVC wire and cable material. The first zone of the double-screw extruder is 115 ℃, the second zone is 135 ℃, the third zone is 150 ℃, the fourth zone is 165 ℃, the fifth zone is 175 ℃, the sixth zone is 180 ℃, the head is 175 ℃, and the screw rotating speed is 200rpm.
Example 4
Mixing 1 part of acidic lignin, 1 part of zinc stannate, 1 part of zinc stearate, dimer acid diisocyanate (20% of acidic lignin) and ALLCHEM360 (0.6% of dimer acid diisocyanate) in a high-speed mixer for 30 minutes, and then performing high-speed ball milling in a ball mill for 2 hours to obtain a mixture with the D50 of 8.2 micrometers; then adding the mixture, 100 parts of PVC, 8 parts of calcium-zinc stabilizer, 36 parts of octyl phthalate, 45 parts of calcium carbonate and 2 parts of antioxidant into a high-speed mixer for mixing to obtain a precursor; and melting, blending, extruding and granulating the precursor by a double-screw extruder to obtain the environment-friendly anti-aging flame-retardant PVC wire and cable material. The first zone of the double-screw extruder is 110 ℃, the second zone is 125 ℃, the third zone is 145 ℃, the fourth zone is 165 ℃, the fifth zone is 175 ℃, the sixth zone is 180 ℃, the head is 175 ℃ and the screw rotating speed is 180rpm.
Example 5
Mixing 3 parts of acidic lignin, 1 part of zinc stannate, 1 part of zinc stearate, dimer acid diisocyanate (5% of the acidic lignin) and ALLCHEM360 (0.6% of the dimer acid diisocyanate) in a high-speed mixer for 30 minutes, and then carrying out high-speed ball milling in a ball mill for 4 hours to obtain a mixture with the D50 of 7.3 micrometers; then adding the mixture, 100 parts of PVC, 7 parts of calcium-zinc stabilizer, 32 parts of octyl phthalate, 60 parts of calcium carbonate and 2 parts of antioxidant into a high-speed mixer for mixing to obtain a precursor; and melting, blending, extruding and granulating the precursor by a double-screw extruder to obtain the environment-friendly anti-aging flame-retardant PVC wire and cable material. The first zone of the double-screw extruder is 110 ℃, the second zone is 125 ℃, the third zone is 145 ℃, the fourth zone is 165 ℃, the fifth zone is 175 ℃, the sixth zone is 180 ℃, the head is 175 ℃, and the screw rotating speed is 50rpm.
Comparative example 1
Adding 100 parts of PVC, 8 parts of calcium-zinc stabilizer, 40 parts of octyl phthalate, 60 parts of calcium carbonate, 2 parts of zinc stearate and 2 parts of antioxidant into a high-speed mixer, and mixing to obtain a precursor; and melting, blending, extruding and granulating the precursor by a double-screw extruder to obtain the PVC wire and cable material. The first zone of the double-screw extruder is 120 ℃, the second zone is 145 ℃, the third zone is 155 ℃, the fourth zone is 165 ℃, the fifth zone is 175 ℃, the sixth zone is 180 ℃, the head is 170 ℃, and the screw rotating speed is 140rpm.
Comparative example 2
Adding 1 part of zinc stannate, 100 parts of PVC, 6 parts of calcium zinc stabilizer, 40 parts of octyl phthalate, 50 parts of calcium carbonate, 2 parts of zinc stearate and 2 parts of antioxidant into a high-speed mixer, and mixing to obtain a precursor; and melting, blending, extruding and granulating the precursor by a double-screw extruder to obtain the PVC wire and cable material. The first zone of the double-screw extruder is 110 ℃, the second zone is 130 ℃, the third zone is 150 ℃, the fourth zone is 160 ℃, the fifth zone is 170 ℃, the sixth zone is 180 ℃, the head is 175 ℃, and the screw rotating speed is 80rpm.
Comparative example 3
Carrying out high-speed ball milling on 0.5 part of zinc stannate and 1 part of zinc stearate in a ball mill for 8 hours to obtain a mixture of the zinc stannate and the zinc stearate with the D50 of 3.5 micrometers; then adding the mixture, 100 parts of PVC, 5 parts of calcium-zinc stabilizer, 35 parts of octyl phthalate, 50 parts of calcium carbonate and 2 parts of antioxidant into a high-speed mixer for mixing to obtain a precursor; and melting, blending, extruding and granulating the precursor by a double-screw extruder to obtain the PVC wire and cable material. The first zone of the double-screw extruder is 120 ℃, the second zone is 140 ℃, the third zone is 160 ℃, the fourth zone is 170 ℃, the fifth zone is 175 ℃, the sixth zone is 180 ℃, the head is 175 ℃ and the screw rotating speed is 160rpm.
Comparative example 4
2 parts of acidic lignin, 1 part of zinc stannate and 1 part of zinc stearate are subjected to high-speed ball milling for 6 hours in a ball mill to obtain a mixture with the D50 of 4.1 micrometers; adding the ball-milled mixture, 100 parts of PVC, 5 parts of calcium-zinc stabilizer, 35 parts of octyl phthalate, 50 parts of calcium carbonate and 2 parts of antioxidant into a high-speed mixer, and continuously mixing to obtain a precursor; and melting, blending, extruding and granulating the precursor by a double-screw extruder to obtain the environment-friendly anti-aging flame-retardant PVC wire and cable material. The first zone of the double-screw extruder is 120 ℃, the second zone is 140 ℃, the third zone is 150 ℃, the fourth zone is 160 ℃, the fifth zone is 170 ℃, the sixth zone is 180 ℃, the head is 175 ℃ and the screw rotating speed is 100rpm.
Comparative example 5
Mixing 4 parts of acidic lignin, 1 part of zinc stannate, 1 part of zinc stearate, dimer acid diisocyanate (7% of the acidic lignin) and ALLCHEM360 (0.9% of the dimer acid diisocyanate) in a high-speed mixer at 80 ℃ for 5 hours, and cooling to room temperature; then adding 100 parts of PVC, 6 parts of calcium-zinc stabilizer, 35 parts of octyl phthalate, 70 parts of calcium carbonate and 2 parts of antioxidant into a high-speed mixer, and continuously mixing to obtain a precursor; and melting, blending, extruding and granulating the precursor by a double-screw extruder to obtain the environment-friendly anti-aging flame-retardant PVC wire and cable material. The first zone of the double-screw extruder is 120 ℃, the second zone is 135 ℃, the third zone is 145 ℃, the fourth zone is 165 ℃, the fifth zone is 175 ℃, the sixth zone is 180 ℃, the head is 175 ℃, and the screw rotating speed is 150rpm.
The PVC wire and cable materials prepared in the examples and comparative examples were subjected to tensile (GB/T1040-2006 standard), oxygen index (GB/T2406-93 standard), ultraviolet light aging (GB/T16422.3-2014 standard) and voltage breakdown (GB 1408.1-2006 standard) tests, and the results are shown in Table 1. As can be seen from Table 1, compared with the comparative example, the example has higher tensile strength, elongation at break and oxygen index and lower intensity reduction rate after ultraviolet radiation besides maintaining better breakdown strength, and the environment-friendly anti-aging flame-retardant PVC wire and cable material disclosed by the invention well solves the problems of flammability, soft ultraviolet absorption capacity and weak mechanical strength of the existing PVC wire and cable material.
All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. The anti-aging flame-retardant PVC material is characterized by comprising the following raw materials: 100 parts of PVC, 5-10 parts of calcium-zinc stabilizer, 30-40 parts of octyl phthalate, 40-70 parts of calcium carbonate, 1-2 parts of zinc stearate, 2 parts of antioxidant, 1-10 parts of acidic lignin, 0.5-1 part of zinc stannate, dimer acid diisocyanate and ALLCHEM360;
the mass of the dimer acid diisocyanate accounts for 5-20 wt% of the acid lignin, and the mass of ALLCHEM360 accounts for 0.5-1 wt% of the dimer acid diisocyanate;
the preparation method of the anti-aging flame-retardant PVC material comprises the following steps: mixing acidic lignin, zinc stearate, zinc stannate, dimer acid diisocyanate and ALLCHEM360 for 10-30 minutes, and then ball-milling the mixture for 2-8 hours to obtain a ball-milled mixture; and mixing the ball-milled mixture, PVC, a calcium-zinc stabilizer, octyl phthalate, calcium carbonate and an antioxidant to obtain a precursor, and melting, blending, extruding and granulating the precursor to obtain the nano-composite material.
2. The anti-aging flame-retardant PVC material according to claim 1, wherein the acidic lignin is used in an amount of 2-5 parts by mass.
3. The anti-aging flame-retardant PVC material according to claim 1, wherein the acidic lignin has a water content of 0-0.5%, excluding endpoint 0.
4. The anti-aging flame-retardant PVC material according to claim 1, wherein the ball milling time is 4-6 hours.
5. The anti-aging flame-retardant PVC material according to claim 1, wherein the particle size of the mixture after ball milling is as follows: 2-10 microns.
6. The anti-aging flame-retardant PVC material according to claim 1, wherein in the extrusion, the temperature parameter of an extruder is 110-180 ℃.
7. The anti-aging flame-retardant PVC material according to claim 1, wherein in the extrusion, the screw speed of an extruder is 50rpm-250rpm.
8. Use of the anti-aging flame retardant PVC material according to any one of claims 1 to 7 for the preparation of wires or cables.
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| CN101173079A (en) * | 2007-10-19 | 2008-05-07 | 东北林业大学 | Xylem filber-polyvinyl chloride composite material and method for producing the same |
| CN106188470A (en) * | 2016-07-21 | 2016-12-07 | 淄博德信联邦化学工业有限公司 | Polyurethane jointless floor and preparation method thereof |
| CN107603069A (en) * | 2017-10-13 | 2018-01-19 | 陆叶锋 | A kind of fire-retardant base polyvinyl chloride material and preparation method thereof |
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| CN112280263A (en) * | 2020-10-26 | 2021-01-29 | 怀化学院 | Lignin-based biodegradable polymer composite film and preparation method thereof |
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| CN106189325A (en) * | 2016-08-04 | 2016-12-07 | 南京工业大学 | Lignin-enhanced wood-plastic material and preparation method thereof |
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| CN101173079A (en) * | 2007-10-19 | 2008-05-07 | 东北林业大学 | Xylem filber-polyvinyl chloride composite material and method for producing the same |
| CN106188470A (en) * | 2016-07-21 | 2016-12-07 | 淄博德信联邦化学工业有限公司 | Polyurethane jointless floor and preparation method thereof |
| CN107603069A (en) * | 2017-10-13 | 2018-01-19 | 陆叶锋 | A kind of fire-retardant base polyvinyl chloride material and preparation method thereof |
| CN109627643A (en) * | 2018-12-29 | 2019-04-16 | 东莞市立晶塑胶有限公司 | A kind of ageing-resistant plastic housing of insulation |
| CN112280263A (en) * | 2020-10-26 | 2021-01-29 | 怀化学院 | Lignin-based biodegradable polymer composite film and preparation method thereof |
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