CN114525000A - Flame-retardant polyvinyl chloride cable material and preparation method thereof - Google Patents

Flame-retardant polyvinyl chloride cable material and preparation method thereof Download PDF

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CN114525000A
CN114525000A CN202210247456.2A CN202210247456A CN114525000A CN 114525000 A CN114525000 A CN 114525000A CN 202210247456 A CN202210247456 A CN 202210247456A CN 114525000 A CN114525000 A CN 114525000A
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parts
flame retardant
polyvinyl chloride
cable material
zinc
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王丽媛
张增伦
白仁斗
唐菲
龙在创
李祥彦
张维元
王杰
黄潇
花蓓
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Yunnan Tin Industry Tin Chemical Materials Co ltd
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Yunnan Tin Industry Tin Chemical Materials Co ltd
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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
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • 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
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2217—Oxides; Hydroxides of metals of magnesium
    • C08K2003/2224—Magnesium hydroxide
    • C—CHEMISTRY; METALLURGY
    • 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
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2227—Oxides; Hydroxides of metals of aluminium
    • C—CHEMISTRY; METALLURGY
    • 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
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/02—Flame or fire retardant/resistant
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The flame-retardant polyvinyl chloride cable material comprises the following components in parts by weight: 100 parts of PVC resin, 50-60 parts of plasticizer, 6-10 parts of stabilizer, 1-2 parts of lubricant, 10-30 parts of filler, 0-1 part of processing aid and 10-20 parts of flame retardant. The polyvinyl chloride cable material disclosed by the invention is efficient in plasticization, good in weather resistance and flame retardant property, and green and environment-friendly.

Description

Flame-retardant polyvinyl chloride cable material and preparation method thereof
Technical Field
The invention relates to the field of wire and cable insulation and sheath materials, in particular to a polyvinyl chloride cable material with flame retardant property and a preparation method thereof.
Background
The fire hazard is a major hidden danger threatening the safety of human life and property, the electrical industry is the highest fire hazard occurrence frequency, in the electrical industry and the power system, the cable becomes an essential part, and the cable has large use amount, multiple varieties and large potential safety hazard in the electrical industry. Polyvinyl chloride is one of the most important cable materials, but a plasticizer added in the processing process can enable the polyvinyl chloride cable to be easily burnt, so that the development of a polyvinyl chloride cable material with a flame retardant effect is imperative.
The flame retardant used for the polyvinyl chloride cable material at present mainly comprises metal hydroxide, inorganic phosphorus series, metal oxide, antimony oxide, borate, inorganic tin compound and the like. Because the flame retardant efficiency of the metal hydroxide (magnesium hydroxide and aluminum hydroxide) is low, the addition amount is large, and the processing performance and the mechanical property of the base material are influenced; antimony oxide (antimony trioxide) and PVC have a synergistic effect of halogen and antimony, and have the greatest contribution to the oxygen index. However, antimony oxide increases the amount of smoke generated and may generate carcinogenic substances; inorganic phosphorus series (red phosphorus, ammonium polyphosphate) has strong hygroscopicity and is easy to hydrolyze to generate PH3A toxic gas; the zinc borate is the most used of borate flame-retardant smoke suppressants, but the zinc borate is rarely used alone and is generally compounded with other compounds for use. When the temperature of the zinc borate is higher than 300 ℃, the loss of crystal water can play a role in heat absorption and cooling, and the zinc borate is decomposed into zinc oxide or zinc hydroxide which enters a gas phase and can dilute combustible gas. If the flame retardant is compounded with a halogen flame retardant, boron halide and zinc halide can be generated, free hydroxyl groups can be inhibited and captured, the combustion chain reaction is prevented, and meanwhile, a solid phase covering layer is formed, so that the surface air of a combustion object is isolated, and the flame retardance is further improved.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a polyvinyl chloride wire and cable material with a flame retardant effect. The invention also provides a preparation method of the cable material.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:
a polyvinyl chloride cable material with a flame retardant effect comprises the following components in parts by mass: 100 parts of PVC resin, 50-60 parts of plasticizer, 6-10 parts of stabilizer, 1-2 parts of lubricant, 10-30 parts of filler, 0-1 part of processing aid and 10-20 parts of flame retardant.
Further, the polyvinyl chloride cable material with the flame retardant effect is prepared from the following components in parts by mass: 100 parts of PVC resin, 50 parts of plasticizer, 9 parts of stabilizer, 1 part of lubricant, 20 parts of filler, 0.4 part of processing aid and 10 parts of flame retardant.
Further, the PVC resin is SG3 resin; the filler is calcium carbonate.
Further, the plasticizer is dioctyl terephthalate, chlorinated paraffin-52 #, epoxidized soybean oil and acetyl tributyl citrate, dioctyl phthalate: chlorinated paraffin-52 #: epoxidized soybean oil: the mass ratio of acetyl tributyl citrate is 6:2:1: 1.
Further, the stabilizer is a calcium-zinc composite stabilizer and bisphenol A, and the mass ratio of the calcium-zinc composite stabilizer to the bisphenol A is 8: 1.
Further, the lubricant is stearic acid and calcium stearate, and the mass ratio of the stearic acid to the calcium stearate is 1: 1.
Further, the processing aid is KH570 or KH560 or KH 550.
Further, the flame retardant is one of magnesium hydroxide, zinc hydroxystannate-coated magnesium hydroxide with the tin mass content of 5%, zinc hydroxystannate-coated magnesium hydroxide with the tin mass content of 10%, zinc hydroxystannate-coated aluminum hydroxide, zinc hydroxystannate synthesized by taking zinc sulfate as a raw material, stannic acid synthesized by taking zinc sulfate as a raw material, zinc hydroxystannate synthesized by taking zinc chloride as a raw material, and zinc stannate synthesized by taking zinc chloride as a raw material.
The preparation method of the polyvinyl chloride cable material with the flame retardant effect comprises the following steps:
(1) mixing various plasticizer raw materials to obtain a compounded mixed plasticizer;
(2) uniformly mixing the compounded mixed plasticizer, the filler, the flame retardant, the PVC resin, the stabilizer and the lubricant to obtain a mixture;
(3) and extruding and granulating the mixture at the temperature of 140-180 ℃.
Further, the filler and the flame retardant are modified by using the processing aid, the modification method is that the processing aid is diluted by 5 times by using ethanol, then the diluted processing aid is respectively added into the filler and the flame retardant, and the mixture is fully stirred and ground to obtain the modified filler and the modified flame retardant; and then uniformly mixing the compounded mixed plasticizer, the modified filler, the modified flame retardant, the PVC resin, the stabilizer and the lubricant to obtain a mixture.
The invention has at least the following beneficial effects:
the cable material is prepared by compounding polyvinyl chloride serving as a base material, dioctyl terephthalate serving as a plasticizer, which is non-toxic, heat-resistant, cold-resistant, difficult to volatilize, anti-drawing, good in flexibility and electric insulation performance, chlorinated paraffin-52 # which can be used as a flame retardant, non-toxic, good in stability, epoxy soybean oil which can be used as a stabilizer and acetyl tributyl citrate which is non-toxic, difficult to volatilize, good in weather resistance, high in plasticizing efficiency and good in compatibility, wherein the plasticizer is prepared by compounding the polyvinyl chloride serving as the base material, the dioctyl terephthalate serving as the plasticizer, the heat-resistant, the cold-resistant, the hard to volatilize, the anti-drawing, the soft and the electric insulation performance. The filler is calcium carbonate, so that the hardness of the cable can be improved, the service life of the cable can be prolonged, and the flame retardant assisting effect can be achieved. The calcium-zinc composite stabilizer is green and environment-friendly, and the bisphenol A can improve the oxidation resistance of the cable material. The processing aid can improve the compatibility of the calcium carbonate and the flame retardant in the polyvinyl chloride. The flame retardant is prepared by compounding single-component or multi-component flame retardants such as magnesium hydroxide, zinc hydroxystannate, zinc stannate and the like, has the characteristics of low cost, no toxicity, high flame retardant efficiency and the like, can be used as a main substitute of antimony trioxide, reduces the generation of toxic gas during combustion, and protects the environment and the personal safety.
Detailed Description
The invention is further illustrated by the following examples.
Example 1
A polyvinyl chloride cable material with a flame retardant effect comprises the following components in parts by mass: 100 parts of SG3 resin, 30 parts of dioctyl terephthalate, 10 parts of chlorinated paraffin-52 #, 5 parts of epoxidized soybean oil, 5 parts of acetyl tributyl citrate, 8 parts of calcium-zinc composite stabilizer, 1 parts of bisphenol A, 0.5 part of stearic acid, 0.5 part of calcium stearate, KH 5700.4 parts of calcium carbonate and 10 parts of magnesium hydroxide (MH-0).
The preparation method of the polyvinyl chloride cable material comprises the following steps: mixing dioctyl terephthalate, chlorinated paraffin-52 #, epoxidized soybean oil and acetyl tributyl citrate to obtain a compounded mixed plasticizer; KH570 is used for modifying calcium carbonate and magnesium hydroxide, and the modification method is that KH570 is diluted by 5 times by ethanol, and then is respectively added into the filling agent and the flame retardant, and the mixture is fully stirred and ground to obtain the modified filling agent and the modified flame retardant. The filler and the flame retardant are both inorganic substances, have poor compatibility with matrix high molecular polymers, are easy to agglomerate or separate out, and can influence the flame retardance and mechanical properties of the cable material, so that better flame retardance effect and mechanical properties can be obtained by performing surface treatment modification. The processing aid (silane coupling agent) is an organic silicon compound with more than two reactive groups with different properties in the molecule, can be simultaneously combined with organic materials and inorganic materials to play a connecting role, thereby enhancing the compatibility of the filler and the flame retardant with the PVC matrix. Uniformly mixing the compounded mixed plasticizer, the modified calcium carbonate, the modified magnesium hydroxide, SG3 resin, the calcium-zinc composite stabilizer, the bisphenol A, the stearic acid and the calcium stearate to obtain a mixture; and adding the mixture into a double-cone double-screw extruder, and performing extrusion molding granulation at 160 ℃ to obtain the polyvinyl chloride cable material with the flame retardant effect.
Example 2
A polyvinyl chloride cable material with a flame retardant effect comprises the following components in parts by mass: 100 parts of SG3 resin, 45 parts of dioctyl terephthalate, 15 parts of chlorinated paraffin-52 #, 7.5 parts of epoxidized soybean oil, 7.5 parts of acetyl tributyl citrate, 8.89 parts of calcium-zinc composite stabilizer, 1.11 parts of bisphenol A, 1 part of stearic acid, 1 part of calcium stearate, KH 5501 parts, 30 parts of calcium carbonate and 15 parts of Zinc Hydroxystannate (ZHS) synthesized by using zinc chloride as a raw material.
The preparation method of the polyvinyl chloride cable material comprises the following steps: mixing dioctyl terephthalate, chlorinated paraffin-52 #, epoxidized soybean oil and acetyl tributyl citrate to obtain a compounded mixed plasticizer; KH550 was used to modify zinc hydroxystannate synthesized from calcium carbonate and zinc chloride, and the modification method was the same as in example 1. Uniformly mixing the compounded mixed plasticizer, the modified calcium carbonate, the modified magnesium hydroxide, SG3 resin, the calcium-zinc composite stabilizer, the bisphenol A, the stearic acid and the calcium stearate to obtain a mixture; and adding the mixture into a double-cone double-screw extruder, and performing extrusion molding granulation at the temperature of 180 ℃ to obtain the polyvinyl chloride cable material with the flame retardant effect.
Example 3
A polyvinyl chloride cable material with a flame retardant effect comprises the following components in parts by mass: 100 parts of SG3 resin, 33 parts of dioctyl terephthalate, 11 parts of chlorinated paraffin-52 #, 5.5 parts of epoxidized soybean oil, 5.5 parts of acetyl tributyl citrate, 5.33 parts of calcium-zinc composite stabilizer, 0.67 part of bisphenol A, 0.75 part of stearic acid, 0.75 part of calcium stearate, 10 parts of calcium carbonate without adding a processing aid, and 20 parts of Zinc Stannate (ZS) synthesized by taking zinc chloride as a raw material.
The preparation method of the polyvinyl chloride cable material comprises the following steps: and mixing dioctyl terephthalate, chlorinated paraffin-52 #, epoxidized soybean oil and acetyl tributyl citrate to obtain the compounded mixed plasticizer. Uniformly mixing the compounded mixed plasticizer, calcium carbonate, magnesium hydroxide, SG3 resin, a calcium-zinc composite stabilizer, bisphenol A, stearic acid and calcium stearate to obtain a mixture; and adding the mixture into a double-cone double-screw extruder, and performing extrusion molding granulation at the temperature of 140 ℃ to obtain the polyvinyl chloride cable material with the flame retardant effect.
Example 4
A polyvinyl chloride cable material with a flame retardant effect comprises the following components in parts by mass: 100 parts of SG3 resin, 30 parts of dioctyl terephthalate, 10 parts of chlorinated paraffin-52 #, 5 parts of epoxidized soybean oil, 5 parts of acetyl tributyl citrate, 8 parts of calcium-zinc composite stabilizer, 1 parts of bisphenol A, 0.5 part of stearic acid, 0.5 part of calcium stearate, 10 parts of KH 5600.4 parts of calcium carbonate and 10 parts of zinc hydroxystannate (ZHS-3) synthesized by using zinc sulfate as a raw material.
The preparation method of the polyvinyl chloride cable material comprises the following steps: mixing dioctyl terephthalate, chlorinated paraffin-52 #, epoxidized soybean oil and acetyl tributyl citrate to obtain a compounded mixed plasticizer; KH560 is used for modifying zinc hydroxystannate synthesized by using calcium carbonate and zinc sulfate as raw materials; uniformly mixing the compounded mixed plasticizer, the modified calcium carbonate, the modified magnesium hydroxide, SG3 resin, the calcium-zinc composite stabilizer, the bisphenol A, the stearic acid and the calcium stearate to obtain a mixture; and adding the mixture into a double-cone double-screw extruder, and performing extrusion molding granulation at the temperature of 150 ℃ to obtain the polyvinyl chloride cable material with the flame retardant effect.
Example 5
A polyvinyl chloride cable material with a flame retardant effect comprises the following components in parts by mass: 100 parts of SG3 resin, 30 parts of dioctyl terephthalate, 10 parts of chlorinated paraffin-52 #, 5 parts of epoxidized soybean oil, 5 parts of acetyl tributyl citrate, 8 parts of calcium-zinc composite stabilizer, 1 parts of bisphenol A, 0.5 part of stearic acid, 0.5 part of calcium stearate, 20 parts of calcium carbonate and 10 parts of stannic acid (ZS-3) synthesized by using zinc sulfate as a raw material.
The preparation method of the polyvinyl chloride cable material comprises the following steps: mixing dioctyl terephthalate, chlorinated paraffin-52 #, epoxidized soybean oil and acetyl tributyl citrate to obtain a compounded mixed plasticizer; uniformly mixing the compounded mixed plasticizer, calcium carbonate, magnesium hydroxide, SG3 resin, a calcium-zinc composite stabilizer, bisphenol A, stearic acid and calcium stearate to obtain a mixture; and adding the mixture into a double-cone double-screw extruder, and performing extrusion molding granulation at 160 ℃ to obtain the polyvinyl chloride cable material with the flame retardant effect.
Example 6
A polyvinyl chloride cable material with a flame retardant effect comprises the following components in parts by mass: 100 parts of SG3 resin, 30 parts of dioctyl terephthalate, 10 parts of chlorinated paraffin-52 #, 5 parts of epoxidized soybean oil, 5 parts of acetyl tributyl citrate, 8 parts of calcium-zinc composite stabilizer, 1 parts of bisphenol A, 0.5 part of stearic acid, 0.5 part of calcium stearate, KH 5700.4 parts, 20 parts of calcium carbonate and 10 parts of zinc hydroxystannate-coated magnesium hydroxide (1-ZHS-MH-5) with the tin content of 5 percent by mass.
The preparation method of the polyvinyl chloride cable material comprises the following steps: mixing dioctyl terephthalate, chlorinated paraffin-52 #, epoxidized soybean oil and acetyl tributyl citrate to obtain a compounded mixed plasticizer; modifying calcium carbonate and zinc hydroxystannate with the mass content of 5 percent by KH570 with magnesium hydroxide coated; uniformly mixing the compounded mixed plasticizer, the modified calcium carbonate and magnesium hydroxide, SG3 resin, a calcium-zinc composite stabilizer, bisphenol A, stearic acid and calcium stearate to obtain a mixture; and adding the mixture into a double-cone double-screw extruder, and performing extrusion molding granulation at the temperature of 170 ℃ to obtain the polyvinyl chloride cable material with the flame retardant effect.
Example 7
A polyvinyl chloride cable material with a flame retardant effect comprises the following components in parts by mass: 100 parts of SG3 resin, 30 parts of dioctyl terephthalate, 10 parts of chlorinated paraffin-52 #, 5 parts of epoxidized soybean oil, 5 parts of acetyl tributyl citrate, 8 parts of calcium-zinc composite stabilizer, 1 parts of bisphenol A, 0.5 part of stearic acid, 0.5 part of calcium stearate, KH 5700.4 parts, 20 parts of calcium carbonate and 10 parts of zinc hydroxystannate-coated magnesium hydroxide (1-ZHS-MH-10) with the tin mass content of 10%.
The preparation method of the polyvinyl chloride cable material comprises the following steps: mixing dioctyl terephthalate, chlorinated paraffin-52 #, epoxidized soybean oil and acetyl tributyl citrate to obtain a compounded mixed plasticizer; modifying calcium carbonate and zinc hydroxystannate with the tin mass content of 10 percent by using KH570 to coat magnesium hydroxide; uniformly mixing the compounded mixed plasticizer, the modified calcium carbonate and magnesium hydroxide, SG3 resin, a calcium-zinc composite stabilizer, bisphenol A, stearic acid and calcium stearate to obtain a mixture; and adding the mixture into a double-cone double-screw extruder, and performing extrusion molding granulation at 160 ℃ to obtain the polyvinyl chloride cable material with the flame retardant effect.
Example 8
A polyvinyl chloride cable material with a flame retardant effect comprises the following components in parts by mass: 100 parts of SG3 resin, 30 parts of dioctyl terephthalate, 10 parts of chlorinated paraffin-52 #, 5 parts of epoxidized soybean oil, 5 parts of acetyl tributyl citrate, 8 parts of calcium-zinc composite stabilizer, 1 parts of bisphenol A, 0.5 part of stearic acid, 0.5 part of calcium stearate, KH 5700.4 parts, 20 parts of calcium carbonate and 10 parts of zinc hydroxystannate-coated aluminum hydroxide (2-ZHS-ATH-5) with the tin content of 5 percent by mass.
The preparation method of the polyvinyl chloride cable material comprises the following steps: mixing dioctyl terephthalate, chlorinated paraffin-52 #, epoxidized soybean oil and acetyl tributyl citrate to obtain a compounded mixed plasticizer; modifying calcium carbonate and zinc hydroxystannate with the mass content of 5 percent by KH 570; uniformly mixing the compounded mixed plasticizer, the modified calcium carbonate and magnesium hydroxide, SG3 resin, a calcium-zinc composite stabilizer, bisphenol A, stearic acid and calcium stearate to obtain a mixture; and adding the mixture into a double-cone double-screw extruder, and performing extrusion molding granulation at 160 ℃ to obtain the polyvinyl chloride cable material with the flame retardant effect.
Comparative example 1
A polyvinyl chloride cable material without flame retardant is prepared from the following raw materials in parts by weight: 100 parts of SG3 resin, 30 parts of dioctyl terephthalate, 10 parts of chlorinated paraffin-52 #, 5 parts of epoxidized soybean oil, 5 parts of acetyl tributyl citrate, 8 parts of calcium-zinc composite stabilizer, 0.5 part of bisphenol A, 0.5 part of stearic acid, 0.5 part of calcium stearate, KH 5700.4 parts and 20 parts of calcium carbonate.
The performance test data for the polyvinyl chloride cable materials prepared in examples 1-8 and comparative example 1 are shown in the following table:
Figure BDA0003545606280000081
as can be seen from the table above, the flame retardant polyvinyl chloride cable material of the invention improves the material properties and obviously improves the flame retardant performance by regulating and optimizing the added flame retardant components.

Claims (10)

1. The flame-retardant polyvinyl chloride cable material is characterized by comprising the following components in parts by mass: 100 parts of PVC resin, 50-60 parts of plasticizer, 6-10 parts of stabilizer, 1-2 parts of lubricant, 10-30 parts of filler, 0-1 part of processing aid and 10-20 parts of flame retardant.
2. The flame-retardant polyvinyl chloride cable material as claimed in claim 1, which is characterized by comprising the following components in parts by mass: 100 parts of PVC resin, 50 parts of plasticizer, 9 parts of stabilizer, 1 part of lubricant, 20 parts of filler, 0.4 part of processing aid and 10 parts of flame retardant.
3. The flame retardant polyvinyl chloride cable material according to claim 1 or 2, wherein the PVC resin is SG3 resin, and the filler is calcium carbonate.
4. A flame retardant polyvinyl chloride cable material according to claim 1 or 2, wherein the plasticizer is dioctyl terephthalate, chloroparaffin-52 #, epoxidized soybean oil and acetyl tributyl citrate, dioctyl phthalate: chlorinated paraffin-52 #: epoxidized soybean oil: the mass ratio of acetyl tributyl citrate is 6:2:1: 1.
5. The flame-retardant polyvinyl chloride cable material according to claim 1 or 2, wherein the stabilizer is a calcium-zinc composite stabilizer and bisphenol A, and the mass ratio of the calcium-zinc composite stabilizer to the bisphenol A is 8: 1.
6. The flame retardant polyvinyl chloride cable material according to claim 1 or 2, wherein the lubricant is stearic acid and calcium stearate, and the mass ratio of stearic acid to calcium stearate is 1: 1.
7. A flame retardant polyvinyl chloride cable material according to claim 1 or 2, wherein said processing aid is KH570 or KH560 or KH 550.
8. The flame retardant polyvinyl chloride cable material according to claim 1 or 2, wherein the flame retardant is one of magnesium hydroxide, zinc hydroxystannate-coated magnesium hydroxide with a tin content of 5%, zinc hydroxystannate-coated magnesium hydroxide with a tin content of 10%, zinc hydroxystannate-coated aluminum hydroxide, zinc hydroxystannate synthesized from zinc sulfate, stannic acid synthesized from zinc sulfate, zinc hydroxystannate synthesized from zinc chloride, and zinc stannate synthesized from zinc chloride.
9. The method for preparing a flame retardant polyvinyl chloride cable material according to any one of claims 1 to 8, wherein the method comprises the following steps:
(1) mixing various plasticizer raw materials to obtain a compounded mixed plasticizer;
(2) uniformly mixing the compounded mixed plasticizer, the filler, the flame retardant, the PVC resin, the stabilizer and the lubricant to obtain a mixture;
(3) and extruding and granulating the mixture at the temperature of 140-180 ℃.
10. The method for preparing flame-retardant polyvinyl chloride cable material according to claim 9, wherein the filler and the flame retardant are modified by the processing aid, the modification method is that the processing aid is diluted by 5 times by ethanol, and then the diluted processing aid is added into the filler and the flame retardant respectively, and the mixture is fully stirred and ground to obtain the modified filler and the modified flame retardant; and then uniformly mixing the compounded mixed plasticizer, the modified filler, the modified flame retardant, the PVC resin, the stabilizer and the lubricant to obtain a mixture.
CN202210247456.2A 2022-03-14 2022-03-14 Flame-retardant polyvinyl chloride cable material and preparation method thereof Pending CN114525000A (en)

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CN116082760A (en) * 2022-11-23 2023-05-09 浙江天原医用材料有限公司 Modified PVC granules for explosion-proof hot water bag and preparation method thereof
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CN116731396B (en) * 2023-07-11 2024-04-02 广西大学 Preparation method and application of high-performance asphalt odor-removal flame-retardant synergist

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