CN116285320A - Low-voltage flexible cable - Google Patents
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- CN116285320A CN116285320A CN202310513671.7A CN202310513671A CN116285320A CN 116285320 A CN116285320 A CN 116285320A CN 202310513671 A CN202310513671 A CN 202310513671A CN 116285320 A CN116285320 A CN 116285320A
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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
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
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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
- 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
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L55/00—Compositions of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08L23/00 - C08L53/00
- C08L55/02—ABS [Acrylonitrile-Butadiene-Styrene] polymers
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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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- 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
- 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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- 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
Abstract
The invention discloses a low-voltage flexible cable and application thereof, and relates to the technical field of cables. Including wire bundles, buffer substances, and cable jackets. The cable coating is prepared from modified plastic with low smoke flame retardant property; the modified plastic comprises the following components in parts by weight: 60-85 parts of main resin, 10-15 parts of benzoxazine, 2-5 parts of aluminum hydroxide, 5-10 parts of 3- (2, 5-diaminophenyl) -1-propanol, 2-5 parts of compound antioxidant and 0-2 parts of lubricant. The low-voltage flexible cable prepared by the invention has good flame retardance and low smoke density.
Description
Technical Field
The invention relates to the technical field of cables, in particular to a low-voltage flexible cable and application thereof.
Background
With the development of society, the variety of cables is increasing, and the internal structure of cable is generally made up of single strand or stranded wire core and insulating layer, and has multiple groups of wires, each group of wires is mutually insulated, often turns around a center, and the whole outside is covered with a highly insulating cover layer. The cable has an inner energized, outer insulated feature. The existing cable flame-retardant capability can not meet the use requirements of some places with high flame-retardant requirements, and when a fire disaster happens, the cable is easy to damage, so that the cable can not be electrified, and the occurrence of the fire disaster is further aggravated.
The prior art (patent CN 207704931U, CN 113035416B) is more from the structure, the structure of the cable is modified, but the problem of flame retardance of the cable is not fundamentally solved.
Disclosure of Invention
The invention aims to provide a low-voltage flexible cable, which solves the problem of poor flame retardance of the existing cable so as to further enhance the performance of the cable in actual use, realizes flame retardance and low smoke density, and can reduce the risk of death of smoke in fire.
In order to achieve the above purpose, the present invention provides the following technical solutions: a low voltage flexible cable comprising a bundle of wires, a buffer substance and a cable jacket, wherein said bundle of wires comprises up to 5 wires, said bundle of wires consisting of copper wires and a conductor insulation layer; wherein the buffer substance is polyurethane foam material; wherein the cable coating is prepared from modified plastic with low smoke flame retardant property; the modified plastic comprises the following components in parts by weight: 60-85 parts of main resin, 10-15 parts of benzoxazine, 2-5 parts of aluminum hydroxide, 5-10 parts of 3- (2, 5-diaminophenyl) -1-propanol, 2-5 parts of antioxidant and 0-2 parts of lubricant, wherein the structural formula of the 3- (2, 5-diaminophenyl) -1-propanol is as follows:
preferably, the main resin of the modified plastic comprises any modified plastic of PA, ABS, PP, PVC and the like.
Preferably, the benzoxazine is a phosphorus-containing benzoxazine.
In the processing process of the benzoxazine, ring-opening polymerization can be carried out on the oxazine ring, and macromolecular chain segments with better compatibility with a matrix are formed through crosslinking, so that the char forming property is better.
Preferably, the phosphorus-containing benzoxazines are ODOPB (10- (2, 5-dihydroxyphenyl) -10-hydrogen-9-oxa-10-phosphaphenanthrene-10-oxide) and DOPO (9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide) and derivatives thereof, wherein the molecular formula of ODOPB is C18H9PO4 and CAS is 99208-50-1; DOPO has the molecular formula of C12H9O2P and CAS of 35948-25-5.
When the phosphorus-containing benzoxazine is burnt, the phosphorus-containing groups can form a foam-like carbon residue layer, and the carbon residue layer can inhibit toxic gases and smoke released from burning materials.
Preferably, the particle size of the aluminum hydroxide is 50-200nm.
Aluminum hydroxide and benzoxazine are blended, the carbon residue rate of the system is increased, and the flame retardance is increased. The aluminum hydroxide is dehydrated and decomposed in advance, so that a large amount of heat is absorbed, the decomposition of benzoxazine resin is inhibited, and the carbon residue rate is increased; and aluminum hydroxide is heated and decomposed to release a large amount of steam to prevent combustion, aluminum hydroxide is dehydrated to generate aluminum oxide to cover the surface of a combustion object, so that air can be isolated, and combustion can be prevented.
Preferably, the composite antioxidant is a mixture of a phosphorus-containing antioxidant and an antioxidant with a multi-polar functional group, and the weight part ratio of the composite antioxidant is 1:3-5, the functionality of the multi-polar functional group antioxidant is more than or equal to 4.
The composite antioxidant can inhibit the generation of free radicals and prevent the thermal oxidative degradation of the composite material.
The polarity of the multi-polar functional group antioxidant is similar to that of aluminum hydroxide and benzoxazine, so that the solubility of the antioxidant in a system can be increased, and the oxidation resistance of the system can be improved.
Further preferably, the multi-polar functional antioxidant is a glycidylamine epoxy resin with a functionality of 4, including 4, 4-diaminodiphenylmethane epoxy resin (model AG-80, shanghai institute of synthetic resins) and para-aminophenol epoxy resin (model AFG-90, shanghai institute of synthetic resins).
Further preferably, the phosphorus-containing antioxidant is a phosphite antioxidant, including any one of GSINOX DHOP, GSINOX THOP, GSINOX 360, pentaerythritol diisodecyl diphosphate, tri-C12-15 alkyl phosphite, tri (tridecyl) phosphite, trilauryl phosphite, and tridecyl phosphite.
Preferably, the lubricant is any one of silicone, esters, amides, polyethylenes, stearates, fatty acids and esters.
An application of a low-voltage flexible cable in the cable field.
Compared with the prior art, the invention has the beneficial effects that:
a low-voltage flexible cable achieves the effect of low smoke flame retardance by adopting a cable coating with a flame retardance effect and introducing 3- (2, 5-diaminophenyl) -1-propanol to a material to cooperate with benzoxazine. The principle is as follows: the amino group contained in the 3- (2, 5-diaminophenyl) -1-propanol and the phosphorus-containing benzoxazine act together to have the synergistic effect of nitrogen and phosphorus, so that the flame retardant effect can be enhanced. The reason is that phosphorus in the phosphorus-containing benzoxazine can generate phosphorus-containing free radicals when in combustion, has gas-phase flame retardant property, and the introduction of nitrogen element can release some nitrogen-containing nonflammable gas when in high-temperature combustion so as to dilute the combustible gas and have the effect of delaying combustion.
Meanwhile, the cable also has good antioxidation effect. The polarity of the multi-polar functional group antioxidant is similar to that of aluminum hydroxide and benzoxazine, so that the solubility of the antioxidant in a system can be increased, and the oxidation resistance of the system can be improved. Meanwhile, the adopted phosphorus-containing antioxidant has the synergistic effect of nitrogen and phosphorus on the flame retardance of the benzoxazine.
Detailed Description
The invention is further illustrated below in connection with examples which are provided solely for the purpose of illustration and are not intended to limit the scope of the invention. The experimental procedures in the examples below, without specific details, are generally performed under conditions conventional in the art or recommended by the manufacturer; the raw materials, reagents and the like used, unless otherwise specified, are those commercially available from conventional markets and the like. Any insubstantial changes and substitutions made by those skilled in the art in light of the above teachings are intended to be within the scope of the invention as claimed.
Example 1
A low voltage flexible cable includes a bundle of wires, a buffer substance, and a cable jacket. The number of the wire bundles is 3, and the wire bundles consist of copper wires and conductor insulating layers, and the buffer substance is conventional polyurethane foaming materials. The specific components of the cable coating material are as follows: PA:60 parts of ODOPB:10 parts of aluminum hydroxide (particle size 50 nm): 2 parts of 3- (2, 5-diaminophenyl) -1-propanol: 5 parts of a composite antioxidant (4, 4-diaminodiphenylmethane epoxy resin (AG-80, shanghai synthetic resin research institute): trilaurin phosphite=1:3 by weight) 2 parts.
Example 2
A low voltage flexible cable includes a bundle of wires, a buffer substance, and a cable jacket. The number of the wire bundles is 3, and the wire bundles consist of copper wires and conductor insulating layers, and the buffer substance is conventional polyurethane foaming materials. The specific components of the cable coating material are as follows: PVC:60 parts of DOPO:10 parts of aluminum hydroxide (particle size 200 nm): 2 parts of 3- (2, 5-diaminophenyl) -1-propanol: 5 parts of a compound antioxidant (para-aminophenol epoxy resin (AFG-90, shanghai synthetic resin research institute): trilaurin phosphite=1:3 by weight) 2 parts.
Example 3
A low voltage flexible cable includes a bundle of wires, a buffer substance, and a cable jacket. The number of the wire bundles is 5, and the wire bundles consist of copper wires and conductor insulating layers, and the buffer substance is conventional polyurethane foaming materials. The specific components of the cable coating material are as follows: ABS:85 parts of DOPO:15 parts of aluminum hydroxide (particle size 200 nm): 5 parts of 3- (2, 5-diaminophenyl) -1-propanol: 10 parts of a compound antioxidant (p-aminophenol epoxy resin (AFG-90, shanghai synthetic resin research institute): trilaurin phosphite=1:3 by weight) 5 parts.
Example 4
A low voltage flexible cable includes a bundle of wires, a buffer substance, and a cable jacket. The number of the wire bundles is 5, and the wire bundles consist of copper wires and conductor insulating layers, and the buffer substance is conventional polyurethane foaming materials. The specific components of the cable coating material are as follows: PP:85 parts of DOPO:15 parts of aluminum hydroxide (particle size 200 nm): 5 parts of 3- (2, 5-diaminophenyl) -1-propanol: 10 parts of a compound antioxidant (p-aminophenol epoxy resin (AFG-90, shanghai synthetic resin research institute): trilaurin phosphite=1:5 by weight) 5 parts.
Example 5
A low voltage flexible cable includes a bundle of wires, a buffer substance, and a cable jacket. The number of the wire bundles is 5, and the wire bundles consist of copper wires and conductor insulating layers, and the buffer substance is conventional polyurethane foaming materials. The specific components of the cable coating material are as follows: PP:85 parts of DOPO:15 parts of aluminum hydroxide (particle size 300 nm): 5 parts of 3- (2, 5-diaminophenyl) -1-propanol: 10 parts of a compound antioxidant (p-aminophenol epoxy resin (AFG-90, shanghai synthetic resin research institute): trilaurin phosphite=1:5 by weight) 5 parts.
Example 6
A low voltage flexible cable includes a bundle of wires, a buffer substance, and a cable jacket. The number of the wire bundles is 5, and the wire bundles consist of copper wires and conductor insulating layers, and the buffer substance is conventional polyurethane foaming materials. The specific components of the cable coating material are as follows: PP:85 parts of DOPO:15 parts of aluminum hydroxide (particle size 200 nm): 5 parts of 3- (2, 5-diaminophenyl) -1-propanol: 10 parts of a compound antioxidant (p-aminophenol epoxy resin (AFG-90, shanghai synthetic resin research institute): trilaurin phosphite=1:5 by weight ratio), 5 parts of zinc stearate, 2 parts.
Comparative example 1
A low voltage flexible cable includes a bundle of wires, a buffer substance, and a cable jacket. The number of the wire bundles is 5, and the wire bundles consist of copper wires and conductor insulating layers, and the buffer substance is conventional polyurethane foaming materials. The specific components of the cable coating material are as follows: PP:85 parts of DOPO:15 parts of aluminum hydroxide (particle size 200 nm): 5 parts of 3- (2, 5-diaminophenyl) -1-propanol: 10 parts of antioxidant: 5 parts of trilaurin phosphite.
Comparative example 2
A low voltage flexible cable includes a bundle of wires, a buffer substance, and a cable jacket. The number of the wire bundles is 5, and the wire bundles consist of copper wires and conductor insulating layers, and the buffer substance is conventional polyurethane foaming materials. The specific components of the cable coating material are as follows: PP:85 parts of DOPO:15 parts of aluminum hydroxide (particle size 200 nm): 5 parts of a compound antioxidant (p-aminophenol epoxy resin (AFG-90, shanghai synthetic resin research institute): trilaurin phosphite=1:5 by weight).
Comparative example 3
A low voltage flexible cable includes a bundle of wires, a buffer substance, and a cable jacket. The number of the wire bundles is 5, and the wire bundles consist of copper wires and conductor insulating layers, and the buffer substance is conventional polyurethane foaming materials. The specific components of the cable coating material are as follows: PP:85 parts of DOPO:15 parts of 3- (2, 5-diaminophenyl) -1-propanol: 10 parts of a compound antioxidant (p-aminophenol epoxy resin (AFG-90, shanghai synthetic resin research institute): trilaurin phosphite=1:5 by weight) 5 parts.
Comparative example 4
A low voltage flexible cable includes a bundle of wires, a buffer substance, and a cable jacket. The number of the wire bundles is 5, and the wire bundles consist of copper wires and conductor insulating layers, and the buffer substance is conventional polyurethane foaming materials. The specific components of the cable coating material are as follows: PP:85 parts of DOPO:15 parts of aluminum hydroxide (particle size 200 nm): 5 parts of 3- (2, 5-diaminophenyl) -1-propanol: 10 parts of composite antioxidant (N, N' -bis- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl) hexamethylenediamine (Ningbo Jin Haiya Co., ltd.): trilaurous phosphite=1 by weight: 5) 5 parts.
The following tests were conducted on the coating materials of the low voltage flexible cables of examples 1 to 6 and comparative examples 1 to 4 of the present invention, and the performance indexes are shown in table 1.
Vertical combustion: testing standard UL94-2015, and testing flame retardant property by using a ZLT-UL94 vertical burning tester;
thermal oxidative aging: ISO 188, 100deg.C @1000h;
smoke density: to evaluate the extent to which a material may release smoke under combustion and decomposition conditions, the smoke density was evaluated by measuring the loss of luminous flux due to the reflection of light by solid dust in the smoke generated by the combustion of the material, carried out in a smoke density box according to standard GB/T8627-2007. Is characterized primarily by Smoke Density Rating (SDR). The test specimens were injection molded into 25mm X3 mm plaques which were treated for 48 hours in accordance with the environmental conditions of GB/T2918-1998, the test being carried out at a temperature (23.+ -. 2 ℃) and a relative humidity of 50.+ -. 5%.
Table 1 performance test values for examples 1-6 and comparative examples 1-4
As can be seen from Table 1, the cable coating using the formulation components, a low voltage flexible cable achieves good flame retardance V-0 and smoke density maintained between 52 and 65, while the resistance to thermal oxidative aging can be achieved without change in appearance at 100℃for 1000 hours. From examples 4 and 5, it is understood that when the particle size of aluminum hydroxide used is not in the preferred range, the low smoke density of a low voltage flexible cable is lowered to 64.5.
From example 4 and comparative example 1, it is understood that when a single antioxidant is used, a low voltage flexible cable can maintain its 100 ℃ resistance appearance unchanged for only 655 hours; from example 4 and comparative example 2, it is seen that when 3- (2, 5-diaminophenyl) -1-propanol is not used, the flame retardance and smoke density of the material are reduced, the flame retardance grade is V-1 and the smoke density is 71.8; from example 4 and comparative example 3, it is known that when aluminum hydroxide is not used, the flame retardance and smoke density of the material are lowered, the flame retardance grade is V-1 and the smoke density is 77.2; from example 4 and comparative example 4, it is understood that when a general composite antioxidant is used, the flame retardant rating of the material is lowered to V-1 and the appearance of the material is maintained for 700 hours without change in thermal oxidative aging resistance at 100 ℃.
The foregoing description of the embodiments of the present invention clearly and fully describes the technical solutions of the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Although embodiments of the present invention have been described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A low voltage flexible cable comprising a bundle of wires, a buffer substance and a cable jacket, wherein said bundle of wires comprises up to 5 wires, said bundle of wires consisting of copper wires and a conductor insulation layer; wherein the buffer substance is polyurethane foam material; wherein the cable coating is prepared from modified plastic with low smoke flame retardant property; the modified plastic comprises the following components in parts by weight: 60-85 parts of main resin, 10-15 parts of benzoxazine, 2-5 parts of aluminum hydroxide, 5-10 parts of 3- (2, 5-diaminophenyl) -1-propanol, 2-5 parts of compound antioxidant, 0-2 parts of lubricant and the following structural formula of 3- (2, 5-diaminophenyl) -1-propanol:
2. the low voltage flexible cable according to claim 1, wherein the bulk resin of the modified plastic comprises any one of PA, ABS, PP, PVC.
3. The low voltage flexible cable of claim 1, wherein the benzoxazine is a phosphorus-containing benzoxazine.
4. A low voltage flexible cable according to claim 3, wherein said phosphorus-containing benzoxazines are ODOPB and DOPO and derivatives thereof.
5. A low voltage flexible cable according to claim 1, wherein the aluminium hydroxide has a particle size of 50-200nm.
6. The low-voltage flexible cable according to claim 1, wherein the composite antioxidant is a mixture of a phosphorus-containing antioxidant and an antioxidant with a multi-polar functional group, and the weight ratio of the composite antioxidant to the antioxidant is 1:3-5, the functionality of the multi-polar functional group antioxidant is more than or equal to 4.
7. The low voltage flexible cable of claim 6, wherein the multi-polar antioxidant is a glycidylamine epoxy resin having a functionality of 4.
8. The low voltage flexible cable of claim 6, wherein the phosphorus antioxidant is a phosphite antioxidant.
9. The low voltage flexible cable of claim 1, wherein the lubricant is any one of silicone, esters, amides, polyethylenes, and fatty acids.
10. Use of a low voltage flexible cable according to any of claims 1-9 in the cable field.
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| CN110294901A (en) * | 2019-06-27 | 2019-10-01 | 湖南华菱线缆股份有限公司 | A kind of corrosion-resistant zero shrinks flame-proof cable material |
| CN111048254A (en) * | 2019-11-29 | 2020-04-21 | 西安冉科信息技术有限公司 | Cable structure suitable for low-temperature area |
| CN111029023A (en) * | 2019-12-16 | 2020-04-17 | 东莞市领亚智能科技有限公司 | Vulcanization-free rubber insulated cable |
| CN111849044A (en) * | 2020-08-13 | 2020-10-30 | 安徽天虹电缆有限公司 | High-strength anti-aging cable material |
| CN213150411U (en) * | 2020-09-23 | 2021-05-07 | 江苏华创线缆有限公司 | Environment-friendly low-smoke halogen-free flame-retardant fire-resistant control cable |
| CN112646510A (en) * | 2020-12-09 | 2021-04-13 | 山东大学 | Preparation of novel flame retardant and application of novel flame retardant in flame-retardant adhesive |
| CN113861241A (en) * | 2021-10-08 | 2021-12-31 | 福建工程学院 | Bridged DOPO phosphorus-nitrogen flame retardant and preparation method and application thereof |
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