CN111393773A - Environment-friendly high-flame-retardant polyvinyl chloride cable sheath material and preparation method thereof - Google Patents
Environment-friendly high-flame-retardant polyvinyl chloride cable sheath material and preparation method thereof Download PDFInfo
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- CN111393773A CN111393773A CN202010446776.1A CN202010446776A CN111393773A CN 111393773 A CN111393773 A CN 111393773A CN 202010446776 A CN202010446776 A CN 202010446776A CN 111393773 A CN111393773 A CN 111393773A
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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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- 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
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- 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
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- 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
- C08K3/38—Boron-containing compounds
- C08K2003/387—Borates
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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
- 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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
100 parts of polyvinyl chloride resin, 28-52 parts of high and low temperature resistant plasticizer, 6-10 parts of calcium-zinc composite stabilizer, 5-30 parts of chlorinated polyethylene, 50-70 parts of inorganic flame retardant, 8-15 parts of antimony trioxide, 8-12 parts of flame retardant synergist, 0.4-0.8 part of antioxidant and 0.6-1.6 parts of lubricant are weighed according to parts by weight and put into a high-speed kneading machine to be mixed, transferred into a double-screw extruder to be subjected to melt extrusion, cooled and cut into particles to obtain a finished product; and the method II comprises the steps of firstly adding the environment-friendly high-flame-retardant polyvinyl chloride cable sheath material into an internal mixer for internal mixing, transferring the mixture into a double-screw extruder for melt extrusion, and then mixing, plasticizing and granulating to obtain a finished product. High flame retardance, good carbon shell forming performance, self-extinguishing performance and low heat release amount are realized, and good low temperature resistance is kept; realizing low odor, excellent heat aging performance and longer heat stability.
Description
Technical Field
The invention belongs to the technical field of high polymer materials for wires and cables, and particularly relates to an environment-friendly high-flame-retardant polyvinyl chloride cable sheath material and a preparation method thereof.
Background
With the development of internet technology, the demand for communication cables as one of the connection links has increased.
According to the comprehensive wiring and fire-proof requirements, communication commercial-grade cables and highest-grade cables need to pass higher combustion tests, such as U L1685 (vertical tray flame-retardant test and smoke-discharge test of cables and optical cables), U L1666 (test of flame propagation height when the cables and the optical cables are vertically installed in a vertical shaft), U L910 (test method of fire and smoke characteristics of the cables and the optical cables), IEC60332-3-22 (flame vertical propagation test of bundled electric wires and cables-class A) and the like, so that the electric wires and cables have higher fire-retardant requirements, the high and low fire-retardant performance of the materials are evaluated by means of oxygen indexes, and the excellent release amount of the fire and smoke characteristics of the materials, such as carbon forming performance, self-extinguishing performance, inferior heat and the like.
The cable taking the PVC material as the sheath at present has the defects that (a) the cable U L1666 burning test is not successful, once the PVC sheath is burnt through when the cable is subjected to a strict U L1666 burning test, an isolation layer between the sheath and the insulation is very thin, flame is easy to burn polyethylene insulation, once the polyethylene insulation is burnt, the interior of the cable is burnt from bottom to top until the whole cable is burnt, and (b) the PVC sheath material has poor low-temperature embrittlement performance and processability, and a large amount of flame retardant is added in the cable to meet the corresponding high flame retardant requirement, so that the low-temperature embrittlement performance of the sheath material is reduced, and the cable cannot be extruded at high speed due to increased current during extrusion, (c) the PVC sheath material has insufficient flame retardant performance, poor carbonization or weak carbon forming layer or high heat release, and the like, so that the PVC sheath is easy to burn through during the cable burning test, so that the cable U L burning test is not successful, (d) the cable sheath material is very thin (about 0.5mm in wall thickness), and at this time, the cable is difficult to be extruded after the PVC sheath material is manufactured, and the cable has a large elongation rate of the cable reaches the standard of the cable ×, and the cable elongation rate of the cable is easily increased, so that the cable is not consistent with the cable extrusion, and the cable elongation rate of the cable extension rate of the cable is high-resistant.
Although the "environment-friendly high-temperature-resistant and low-temperature-resistant oil-resistant polychlorinated alkene cable sheath material" recommended by Chinese patent application publication No. CN106947184A can objectively achieve the technical effect summarized in paragraph 0020 of the specification, the patent application has the following disadvantages: firstly, because the formula is added with copolymer resin such as one or more of ethylene vinyl acetate and ethylene acrylate terpolymer, sharp acid odor can be emitted during granulation or cable extrusion, and the environment of a working place is influenced; secondly, the coating is developed for outdoor use, so that the coating is partially wasted on high flame retardance, carbon-forming crusting performance, spontaneous combustibility, low heat release and the like under indoor use; thirdly, as the emphasis is placed on outdoor use, no reference is given to the improvement of mechanical and physical properties such as impact resistance and cracking resistance by technical means such as toughening.
Therefore, the applicant has made a long-lasting and beneficial search, and finally finds a solution to the problems, and forms the technical scheme to be introduced below.
Disclosure of Invention
The invention aims to provide the environment-friendly high-flame-retardant polyvinyl chloride cable sheath material which is beneficial to reflecting good low-temperature performance, excellent flame-retardant performance, thermal aging resistance, thermal stability, processability and small smell during processing and can ensure that a cable prepared by matching can pass a U L1666 combustion test.
The invention also aims to provide a preparation method of the environment-friendly high-flame-retardant polyvinyl chloride cable sheath material, which has the advantages of simple process and no harsh process elements so as to meet the requirement of industrial scale-up production, and the environment-friendly high-flame-retardant polyvinyl chloride cable sheath material obtained by the method can comprehensively achieve the technical effect.
In order to embody the primary task of the invention, the technical scheme provided by the invention is that the environment-friendly high-flame-retardant polyvinyl chloride cable sheath material is prepared from the following raw materials in parts by weight:
the chlorinated polyethylene is rubber type chlorinated polyethylene with chlorine content of 36 +/-1% and Mooney viscosity of 95-110; the antioxidant is one or two of a compound antioxidant B225 and an antioxidant 1010; the lubricant is a combination of stearic acid and polyethylene wax, a combination of stearic acid, polyethylene wax and octyl stearate, or a combination of any one of stearic acid and polyethylene wax and octyl stearate.
In a specific embodiment of the present invention, the polyvinyl chloride resin is a polyvinyl chloride resin having a polymerization degree of 1300.
In another specific embodiment of the present invention, the high and low temperature resistant plasticizer is trimellitate plasticizer (TINTM), a mixture of trioctyl trimellitate and dioctyl sebacate or a mixture of trioctyl trimellitate and dioctyl adipate, wherein: the weight ratio of trioctyl trimellitate to dioctyl sebacate or to dioctyl adipate is 20-47: 5 to 8.
In another specific embodiment of the invention, the calcium-zinc composite stabilizer is a powdery 105 ℃ grade calcium-zinc composite stabilizer.
In another specific embodiment of the invention, the inorganic flame retardant is a mixture of aluminum hydroxide and calcium carbonate in a weight ratio of 30-65: 5-20.
In yet another specific embodiment of the present invention, the flame retardant synergist is zinc borate or zinc stannate.
In order to embody another task of the present invention, the technical solution provided by the present invention is: a preparation method of an environment-friendly high-flame-retardant polyvinyl chloride cable sheath material comprises any one of the following two methods: firstly, 100 parts of polyvinyl chloride resin, 28-52 parts of high and low temperature resistant plasticizer, 6-10 parts of calcium-zinc composite stabilizer, 5-30 parts of chlorinated polyethylene, 50-70 parts of inorganic flame retardant, 8-15 parts of antimony trioxide, 8-12 parts of flame retardant synergist, 0.4-0.8 part of antioxidant and 0.6-1.6 parts of lubricant are weighed according to parts by weight and put into a high-speed kneader to be uniformly mixed, then the mixture is transferred into a double-screw extruder to be subjected to melt extrusion, and then the mixture is cooled and cut into particles to obtain the environment-friendly high flame retardant polyvinyl chloride cable sheath material; and a second step of adding 100 parts by weight of polyvinyl chloride resin, 28-52 parts by weight of high and low temperature resistant plasticizer, 6-10 parts by weight of calcium-zinc composite stabilizer, 5-30 parts by weight of chlorinated polyethylene, 50-70 parts by weight of inorganic flame retardant, 8-15 parts by weight of antimony trioxide, 8-12 parts by weight of flame retardant synergist, 0.4-0.8 part by weight of antioxidant and 0.6-1.6 parts by weight of lubricant into an internal mixer for internal mixing, then transferring into a double screw extruder for melt extrusion, and then mixing, plasticizing and granulating to obtain the environment-friendly high flame retardant polyvinyl chloride cable sheath material.
The technical scheme provided by the invention has the following advantages: the polyvinyl chloride is used as a base material, the toughness and the low-temperature resistance of the product are improved by adding the rubber type chlorinated polyethylene and matching with the high-low temperature resistant plasticizer, and high flame retardance, good carbon shell forming performance and self-extinguishing performance and low heat release amount are realized by adding more inorganic flame retardant, antimony trioxide and flame retardant synergist, and meanwhile, the good low-temperature resistance is kept; the rubber type chlorinated polyethylene and the high and low temperature resistant plasticizer are compounded for use, and the calcium-zinc composite stabilizer and the antioxidant are used at the grade of 105 ℃, so that the low odor, the excellent thermal aging performance and the longer thermal stability are realized; by adding a reasonable amount of lubricant, the high flame-retardant PVC sheath material is well plasticized, the balance and good processing performance of the comprehensive performance of the product are realized, and the high flame-retardant PVC sheath material is suitable for the rapid extrusion requirement of wires and cables; the preparation method has simple process and no harsh process elements, so that the requirement of industrial scale-up production can be met, and the obtained environment-friendly high-flame-retardant polyvinyl chloride cable sheath material can truly and comprehensively achieve the technical effect.
Detailed Description
For the purpose of facilitating a clearer understanding of the technical spirit of the present invention, reference will now be made in detail to the examples, but the present invention is not limited thereto.
Example 1:
an environment-friendly high-flame-retardant polyvinyl chloride cable sheath material comprises the following components in parts by weight:
the preparation method comprises the following steps: the raw materials weighed according to the parts by weight are put into a high-speed kneader to be uniformly mixed (namely uniformly kneaded), then the mixture is transferred into a double-screw extruder to be melted and extruded, and then the mixture is cooled and cut into particles to obtain the environment-friendly high-flame-retardant polyvinyl chloride cable sheath material.
Example 2:
an environment-friendly high-flame-retardant polyvinyl chloride cable sheath material comprises the following components in parts by weight:
the preparation method comprises the following steps: the environment-friendly high-flame-retardant polyvinyl chloride cable sheath material is prepared by firstly putting the raw materials weighed according to the parts by weight into an internal mixer for banburying, then transferring the banbury mixer into a double-screw extruder for melt extrusion, and then mixing, plasticizing and granulating the mixture.
Example 3:
an environment-friendly high-flame-retardant polyvinyl chloride cable sheath material comprises the following components in parts by weight:
the preparation is as described for example 1.
Example 4:
an environment-friendly high-flame-retardant polyvinyl chloride cable sheath material comprises the following components in parts by weight:
the preparation is as described for example 1.
Example 5:
an environment-friendly high-flame-retardant polyvinyl chloride cable sheath material comprises the following components in parts by weight:
the preparation is as described for example 2.
Example 6:
an environment-friendly high-flame-retardant polyvinyl chloride cable sheath material comprises the following components in parts by weight:
the preparation is as described for example 1.
Example 7:
an environment-friendly high-flame-retardant polyvinyl chloride cable sheath material comprises the following components in parts by weight:
the preparation is as described for example 1.
The cables prepared in the above examples 1 to 7 have good low temperature performance, excellent flame retardant property, thermal aging resistance, thermal stability, processability, and little smell during processing due to reasonable raw materials and mixture ratio thereof, and pass the combustion test of U L1666, which is different from the prior art in which ethylene/vinyl acetate/carbon monoxide terpolymer and ethylene/butyl acrylate/carbon monoxide terpolymer are added.
The environmental-friendly high-flame-retardant polyvinyl chloride cable sheath material obtained from the above examples 1 to 7 has the following performance indexes by tests:
Claims (7)
1. the environment-friendly high-flame-retardant polyvinyl chloride cable sheath material is characterized by comprising the following raw materials in parts by weight:
100 parts of polyvinyl chloride resin;
28-52 parts of a high and low temperature resistant plasticizer;
6-10 parts of a calcium-zinc composite stabilizer;
5-30 parts of chlorinated polyethylene;
50-70 parts of an inorganic flame retardant;
8-15 parts of antimony trioxide;
8-12 parts of a flame-retardant synergist;
0.4-0.8 part of antioxidant;
0.6-1.6 parts of a lubricant.
The chlorinated polyethylene is rubber type chlorinated polyethylene with chlorine content of 36 +/-1% and Mooney viscosity of 95-110; the antioxidant is one or two of a compound antioxidant B225 and an antioxidant 1010; the lubricant is a combination of stearic acid and polyethylene wax, a combination of stearic acid, polyethylene wax and octyl stearate, or a combination of any one of stearic acid and polyethylene wax and octyl stearate.
2. The material for a cable sheath of polyvinyl chloride with environmental protection and high flame retardancy as claimed in claim 1, wherein the polyvinyl chloride resin is a polyvinyl chloride resin having a degree of polymerization of 1300.
3. The environmental-friendly high flame retardant polyvinyl chloride cable sheath material as claimed in claim 1, wherein the high and low temperature resistant plasticizer is a trimellitate plasticizer, a mixture of trioctyl trimellitate and dioctyl sebacate or a mixture of trioctyl trimellitate and dioctyl adipate, wherein: the weight ratio of trioctyl trimellitate to dioctyl sebacate or to dioctyl adipate is 20-47: 5 to 8.
4. The environment-friendly high flame retardant polyvinyl chloride cable sheath material as claimed in claim 1, wherein the calcium-zinc composite stabilizer is powdery 105 ℃ grade calcium-zinc composite stabilizer.
5. The environment-friendly high flame retardant polyvinyl chloride cable sheath material as claimed in claim 1, wherein the inorganic flame retardant is a mixture of aluminum hydroxide and calcium carbonate in a weight ratio of 30-65: 5-20.
6. The environment-friendly high flame retardant polyvinyl chloride cable sheath material as claimed in claim 1, wherein the flame retardant synergist is zinc borate or zinc stannate.
7. A method for preparing the environmental-friendly high flame-retardant polyvinyl chloride cable sheath material as claimed in claim 1, which comprises either one of the following methods I and II: firstly, 100 parts of polyvinyl chloride resin, 28-52 parts of high and low temperature resistant plasticizer, 6-10 parts of calcium-zinc composite stabilizer, 5-30 parts of chlorinated polyethylene, 50-70 parts of inorganic flame retardant, 8-15 parts of antimony trioxide, 8-12 parts of flame retardant synergist, 0.4-0.8 part of antioxidant and 0.6-1.6 parts of lubricant are weighed according to parts by weight and put into a high-speed kneader to be uniformly mixed, then the mixture is transferred into a double-screw extruder to be subjected to melt extrusion, and then the mixture is cooled and cut into particles to obtain the environment-friendly high flame retardant polyvinyl chloride cable sheath material; and a second step of adding 100 parts by weight of polyvinyl chloride resin, 28-52 parts by weight of high and low temperature resistant plasticizer, 6-10 parts by weight of calcium-zinc composite stabilizer, 5-30 parts by weight of chlorinated polyethylene, 50-70 parts by weight of inorganic flame retardant, 8-15 parts by weight of antimony trioxide, 8-12 parts by weight of flame retardant synergist, 0.4-0.8 part by weight of antioxidant and 0.6-1.6 parts by weight of lubricant into an internal mixer for internal mixing, then transferring into a double screw extruder for melt extrusion, and then mixing, plasticizing and granulating to obtain the environment-friendly high flame retardant polyvinyl chloride cable sheath material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010446776.1A CN111393773A (en) | 2020-05-25 | 2020-05-25 | Environment-friendly high-flame-retardant polyvinyl chloride cable sheath material and preparation method thereof |
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| CN202010446776.1A CN111393773A (en) | 2020-05-25 | 2020-05-25 | Environment-friendly high-flame-retardant polyvinyl chloride cable sheath material and preparation method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112409720A (en) * | 2020-10-15 | 2021-02-26 | 扬州市金华铜业有限公司 | Environment-friendly flame-retardant polyvinyl chloride insulating skin and preparation method thereof |
| CN112409719A (en) * | 2020-10-14 | 2021-02-26 | 扬州市金华铜业有限公司 | Environment-friendly flame-retardant polyvinyl chloride insulating granules and preparation method thereof |
| CN112812461A (en) * | 2020-12-30 | 2021-05-18 | 苏州汇博塑化有限公司 | Semi-hard flame-retardant PVC (polyvinyl chloride) sheath material for optical fibers |
| CN112812460A (en) * | 2020-12-30 | 2021-05-18 | 苏州汇博塑化有限公司 | Environment-friendly high-flame-retardance sheath material for PVC optical cable |
| CN113817277A (en) * | 2021-06-21 | 2021-12-21 | 杭州永通新材料有限公司 | 90 ℃ soft polyvinyl chloride elastomer sheath material |
| CN114102901A (en) * | 2021-11-23 | 2022-03-01 | 刘帮奇 | Flame-retardant insulating composite material and preparation process and device thereof |
| CN114276630A (en) * | 2021-12-13 | 2022-04-05 | 乐庭电线工业（惠州）有限公司 | Semi-rigid polyvinyl chloride flame-retardant insulating sizing material, preparation method thereof and cable |
| CN114456519A (en) * | 2022-03-08 | 2022-05-10 | 浙江天杰实业股份有限公司 | Environment-friendly high-temperature flame-retardant polyvinyl chloride sheath material |
| CN114524986A (en) * | 2022-04-07 | 2022-05-24 | 山东鲁泰控股集团有限公司石墨烯高分子复合材料研发中心 | Environment-friendly flame-retardant PVC/PE composite material and preparation method thereof |
| CN116253959A (en) * | 2022-12-02 | 2023-06-13 | 中广核拓普（湖北）新材料有限公司 | Flame-retardant polyvinyl chloride and preparation method thereof |
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2020
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112409719A (en) * | 2020-10-14 | 2021-02-26 | 扬州市金华铜业有限公司 | Environment-friendly flame-retardant polyvinyl chloride insulating granules and preparation method thereof |
| CN112409720A (en) * | 2020-10-15 | 2021-02-26 | 扬州市金华铜业有限公司 | Environment-friendly flame-retardant polyvinyl chloride insulating skin and preparation method thereof |
| CN112812461A (en) * | 2020-12-30 | 2021-05-18 | 苏州汇博塑化有限公司 | Semi-hard flame-retardant PVC (polyvinyl chloride) sheath material for optical fibers |
| CN112812460A (en) * | 2020-12-30 | 2021-05-18 | 苏州汇博塑化有限公司 | Environment-friendly high-flame-retardance sheath material for PVC optical cable |
| CN113817277A (en) * | 2021-06-21 | 2021-12-21 | 杭州永通新材料有限公司 | 90 ℃ soft polyvinyl chloride elastomer sheath material |
| CN114102901A (en) * | 2021-11-23 | 2022-03-01 | 刘帮奇 | Flame-retardant insulating composite material and preparation process and device thereof |
| CN114276630A (en) * | 2021-12-13 | 2022-04-05 | 乐庭电线工业（惠州）有限公司 | Semi-rigid polyvinyl chloride flame-retardant insulating sizing material, preparation method thereof and cable |
| CN114456519A (en) * | 2022-03-08 | 2022-05-10 | 浙江天杰实业股份有限公司 | Environment-friendly high-temperature flame-retardant polyvinyl chloride sheath material |
| CN114524986A (en) * | 2022-04-07 | 2022-05-24 | 山东鲁泰控股集团有限公司石墨烯高分子复合材料研发中心 | Environment-friendly flame-retardant PVC/PE composite material and preparation method thereof |
| CN114524986B (en) * | 2022-04-07 | 2023-09-08 | 山东鲁泰控股集团有限公司石墨烯高分子复合材料研发中心 | Environment-friendly flame-retardant PVC/PE composite material and preparation method thereof |
| CN116253959A (en) * | 2022-12-02 | 2023-06-13 | 中广核拓普（湖北）新材料有限公司 | Flame-retardant polyvinyl chloride and preparation method thereof |
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Application publication date: 20200710 |