CN110845784A - Silane cross-linked low-smoke halogen-free flame-retardant polyolefin material and preparation method thereof - Google Patents
Silane cross-linked low-smoke halogen-free flame-retardant polyolefin material and preparation method thereof Download PDFInfo
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- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
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- C08L2312/00—Crosslinking
- C08L2312/08—Crosslinking by silane
Abstract
The invention discloses a silane crosslinking low-smoke halogen-free flame-retardant polyolefin material, which comprises a material A and a material B, wherein the material A comprises the following components in parts by weight: 50-70 parts of ethylene-vinyl acetate copolymer; 40-60 parts of linear low-density polyethylene; 5-10 parts of a compatilizer; 25-30 parts of magnesium hydroxide; 15-20 parts of aluminum hydroxide; 1-2 parts of a free water adsorbent; 3-5 parts of a silane coupling agent; 0.1-0.5 part of antioxidant; 0.5-1 part of lubricant; wherein the B material comprises the following components in parts by weight: 80-90 parts of linear low-density polyethylene; 1-3 parts of a crosslinking initiator; 3-5 parts of an auxiliary crosslinking agent; 3-5 parts of organic tin; 0.1-0.5 part of antioxidant; 0.5-1 part of lubricant; wherein the aluminum hydroxide in the material A is aluminum hydroxide coated by the surface of hydroxyl-terminated silicone oil, and the crosslinking initiator in the material B is a hydrophobic peroxide initiator. According to the preparation method of the silane crosslinking low-smoke halogen-free flame-retardant polyolefin material, an inorganic flame-retardant system is made into a self-crosslinking material, so that the aim of low-smoke halogen-free flame-retardant self-crosslinking is fulfilled, and the silane crosslinking low-smoke halogen-free flame-retardant polyolefin material is good in flame-retardant performance and excellent in comprehensive performance.
Description
Technical Field
The invention relates to a silane crosslinking low-smoke halogen-free flame-retardant polyolefin material and a preparation method thereof.
Background
The common low-smoke halogen-free flame-retardant wire and cable material influences the application range of the material due to the limitation of the self material application condition; therefore, some basic properties of the material are improved through the crosslinking form, so that the wire and cable can be used under special conditions. The traditional crosslinking polyolefin mainly adopts crosslinking modes such as chemical crosslinking, silane crosslinking, irradiation crosslinking, ultraviolet crosslinking and the like.
The existing common crosslinking mode needs a certain equipment base, and the mode which is easier to realize self-crosslinking is a silane crosslinking mode. Since the initiation conditions for silane crosslinking, heat and water, both in natural air, are present, by appropriate adjustment of the crosslinker system, it is possible to achieve self-crosslinking without assistance. The development of self-crosslinking materials currently occupies a leading position in Japan, including Japan gulf river, Japan three-well, etc., and has self-crosslinking products of their own. The silane crosslinking low-smoke halogen-free flame retardant material is a special self-crosslinking flame retardant material formed by using a silane crosslinking system and using an inorganic flame retardant as a flame retardant system. The self-crosslinking product proposed by the three wells at present uses a PN flame-retardant system, although the flame-retardant system is a halogen-free system, the smoke quantity of the flame-retardant system cannot meet the requirement of low smoke, and the system is expensive. If the inorganic flame-retardant system can be made into a self-crosslinking material, the aim of low-smoke halogen-free flame-retardant self-crosslinking can be achieved.
The use of inorganic flame retardants in silane crosslinking systems presents the following difficulties: the flame retardant mechanism of the inorganic flame retardant is that the crystal water contained in the inorganic flame retardant is utilized to release the crystal water under the combustion condition, the temperature is reduced, oxygen is diluted, and combustible materials are diluted so as to realize flame retardance, and the crystal water contained in the inorganic flame retardant can influence the crosslinking of the materials in the manufacturing, storing and using processes in a silane crosslinking mode, so that the pre-crosslinking condition can occur in the manufacturing process, the storing process and the line extruding process; secondly, inorganic flame retardants need to be added in a large amount to exert the flame retardant effect, but the basic principle of silane crosslinking is to pre-graft silane on base resin, and then initiate and continue crosslinking by using a proper initiation system, so that the activity of the pre-grafted silane on the resin is seriously influenced under the condition of filling a large amount of the inorganic flame retardants, and the crosslinking degree and the crosslinking uniformity are influenced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a silane crosslinking low-smoke halogen-free flame-retardant polyolefin material and a preparation method thereof.
The invention aims to provide a silane crosslinking low-smoke halogen-free flame retardant polyolefin material, which comprises a material A and a material B, wherein the material A comprises the following components in parts by weight:
wherein the B material comprises the following components in parts by weight:
wherein the aluminum hydroxide in the material A is aluminum hydroxide coated by the surface of hydroxyl-terminated silicone oil, and the crosslinking initiator in the material B is a hydrophobic peroxide initiator. The mass ratio of the material A to the material B is 1: 1.
Further, the preparation method of the aluminum hydroxide coated with the hydroxyl-terminated silicone oil surface comprises the following steps: dissolving hydroxyl-terminated silicone oil in acetone to form a solution, then adding aluminum hydroxide, performing ultrasonic dispersion for 10 minutes, adding dibutyltin dilaurate into the ultrasonically dispersed powder, continuing performing ultrasonic dispersion for 10 minutes, and drying in a vacuum drying oven at 80 ℃ to constant weight; the mass ratio of the hydroxyl-terminated silicone oil to the acetone to the aluminum hydroxide to the dibutyltin dilaurate is 0.5:70:100: 0.8.
The aluminum hydroxide and the magnesium hydroxide are commonly used inorganic fire retardants, the first crystallization water decomposition temperature of the aluminum hydroxide is about 180-190 ℃, the complete decomposition temperature is 230-250 ℃, the first crystallization water decomposition temperature of the magnesium hydroxide is about 220-230 ℃, and the complete decomposition temperature is 270-290 ℃. While the main initiation system for silane crosslinking entails the use of peroxides, the usual initiation temperature is 185 ℃, so aluminum hydroxide is more likely to cause disturbance of crosslinking. Therefore, magnesium hydroxide is the main fire retardant, and aluminum hydroxide needs to be subjected to surface coating treatment.
In the invention, the surface of the aluminum hydroxide is coated, namely the surface of the aluminum hydroxide is subjected to hydrophobic treatment, and meanwhile, the free water adsorbent is added into the flame-retardant system, so that the flame-retardant effect is enhanced.
Preferably, the particle size of the magnesium hydroxide is 0.5-1.5 μm, and the particle size of the aluminum hydroxide is 1-2 μm.
Specifically, the hydrophobic peroxide initiator is one or more selected from benzoyl peroxide, benzoyl tert-butyl peroxide and methyl ethyl ketone peroxide.
Specifically, the silane coupling agent is one or more selected from the group consisting of a silane coupling agent KH550, a silane coupling agent KH560, and a silane coupling agent KH 570.
Specifically, in the ethylene-vinyl acetate copolymer, the ratio of ethylene to vinyl acetate is (5-8): 1.
Specifically, the compatilizer is at least one selected from maleic anhydride grafted ethylene-vinyl acetate copolymer and maleic anhydride grafted polyethylene; in the invention, the compatilizer is added to promote the fusion of the resin and the powder, so that the system is more uniform.
Specifically, the free water adsorbent is one or more selected from the group consisting of zeolite, activated carbon, and silica gel. The free water adsorbent can adsorb crystal water contained in the inorganic flame retardant, so that the pre-crosslinking condition in the manufacturing process, the storage process and the line extrusion process in a silane crosslinking mode can be avoided.
Specifically, the antioxidant in the material A is at least one selected from antioxidant DSTP and antioxidant 1010, and the antioxidant in the material B is at least one selected from antioxidant DSTP and antioxidant 1010.
Specifically, the auxiliary crosslinking agent is one or more selected from lecithin, diethyl cyclohexyl amino ethylene phosphorus and triallyl phosphate.
Specifically, the lubricant in the material A is at least one selected from paraffin and silicone oil, and the lubricant in the material B is at least one selected from paraffin and silicone oil.
The second purpose of the invention is to provide a preparation method of the silane crosslinking low-smoke halogen-free flame retardant polyolefin material, which comprises the following steps:
(1) adding the components of the material A into an internal mixer for mixing, discharging when the mixing temperature is 130-150 ℃ to obtain a mixed material A, adding the mixed material A into a double-screw extruder for extruding to obtain an intermediate A; adding the components of the material B into an internal mixer for mixing, discharging when the mixing temperature is 130-150 ℃ to obtain a material B mixture, adding the material B mixture into a double-screw extruder for extruding to obtain an intermediate B;
(2) and adding the intermediate A and the intermediate B into an internal mixer for internal mixing at the temperature of 130-150 ℃, and then extruding and granulating by a single screw and a double screw to obtain the silane crosslinking low-smoke halogen-free flame-retardant polyolefin material.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: according to the preparation method of the silane crosslinking low-smoke halogen-free flame-retardant polyolefin material, an inorganic flame-retardant system is made into a self-crosslinking material, so that the aim of low-smoke halogen-free flame-retardant self-crosslinking is fulfilled, and the flame-retardant property is good; all the components have synergistic effect, so that the comprehensive performance of the material is improved, and the weather resistance, the mechanical property and the flame retardance of the material are improved.
Detailed Description
The following provides a detailed description of preferred embodiments of the invention.
The invention provides a silane crosslinking low-smoke halogen-free flame-retardant polyolefin material which comprises a material A and a material B, wherein the material A comprises the following components in parts by weight:
wherein the B material comprises the following components in parts by weight:
wherein the aluminum hydroxide in the material A is aluminum hydroxide coated by the surface of hydroxyl-terminated silicone oil, and the crosslinking initiator in the material B is a hydrophobic peroxide initiator. The mass ratio of the material A to the material B is 1: 1. The preparation method of the aluminum hydroxide coated on the surface of the hydroxyl-terminated silicone oil comprises the following steps: dissolving hydroxyl-terminated silicone oil in acetone to form a solution, then adding aluminum hydroxide, performing ultrasonic dispersion for 10 minutes, adding dibutyltin dilaurate into the ultrasonically dispersed powder, continuing performing ultrasonic dispersion for 10 minutes, and drying in a vacuum drying oven at 80 ℃ to constant weight; the mass ratio of the hydroxyl-terminated silicone oil to the acetone to the aluminum hydroxide to the dibutyltin dilaurate is 0.5:70:100: 0.8.
The aluminum hydroxide and the magnesium hydroxide are commonly used inorganic fire retardants, the first crystallization water decomposition temperature of the aluminum hydroxide is about 180-190 ℃, the complete decomposition temperature is 230-250 ℃, the first crystallization water decomposition temperature of the magnesium hydroxide is about 220-230 ℃, and the complete decomposition temperature is 270-290 ℃. While the main initiation system for silane crosslinking entails the use of peroxides, the usual initiation temperature is 185 ℃, so aluminum hydroxide is more likely to cause disturbance of crosslinking. Therefore, magnesium hydroxide is the main fire retardant, and aluminum hydroxide needs to be subjected to surface coating treatment.
In the invention, the surface of the aluminum hydroxide is coated, namely the surface of the aluminum hydroxide is subjected to hydrophobic treatment, and meanwhile, the free water adsorbent is added into the flame-retardant system, so that the flame-retardant effect is enhanced.
The particle size of the magnesium hydroxide is 0.5-1.5 mu m, and the particle size of the aluminum hydroxide is 1-2 mu m; the hydrophobic peroxide initiator is one or more selected from benzoyl peroxide, benzoyl tert-butyl peroxide and methyl ethyl ketone peroxide; the silane coupling agent is one or more selected from a silane coupling agent KH550, a silane coupling agent KH560 and a silane coupling agent KH 570; in the ethylene-vinyl acetate copolymer, the ratio of ethylene to vinyl acetate is (5-8) to 1; the compatilizer is at least one selected from maleic anhydride grafted ethylene-vinyl acetate copolymer and maleic anhydride grafted polyethylene; in the invention, the compatilizer is added to promote the fusion of the resin and the powder, so that the system is more uniform; the free water adsorbent is one or more selected from zeolite, activated carbon and silica gel. The free water adsorbent can adsorb crystal water contained in the inorganic flame retardant, so that pre-crosslinking conditions in the manufacturing process, the storage process and the line extrusion process in a silane crosslinking mode can be avoided; the antioxidant in the material A is at least one selected from antioxidant DSTP and antioxidant 1010, and the antioxidant in the material B is at least one selected from antioxidant DSTP and antioxidant 1010; the auxiliary crosslinking agent is one or more selected from lecithin, diethyl cyclohexyl amino ethylene phosphorus and triallyl phosphate; the lubricant in the material A is at least one selected from paraffin and silicone oil, and the lubricant in the material B is at least one selected from paraffin and silicone oil.
The second purpose of the invention is to provide a preparation method of the silane crosslinking low-smoke halogen-free flame retardant polyolefin material, which comprises the following steps:
(1) adding the components of the material A into an internal mixer for mixing, discharging when the mixing temperature is 130-150 ℃ to obtain a mixed material A, adding the mixed material A into a double-screw extruder for extruding to obtain an intermediate A; adding the components of the material B into an internal mixer for mixing, discharging when the mixing temperature is 130-150 ℃ to obtain a material B mixture, adding the material B mixture into a double-screw extruder for extruding to obtain an intermediate B;
(2) and adding the intermediate A and the intermediate B into an internal mixer for internal mixing at the temperature of 130-150 ℃, and then extruding and granulating by a single screw and a double screw to obtain the silane crosslinking low-smoke halogen-free flame-retardant polyolefin material.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: according to the preparation method of the silane crosslinking low-smoke halogen-free flame-retardant polyolefin material, an inorganic flame-retardant system is made into a self-crosslinking material, so that the aim of low-smoke halogen-free flame-retardant self-crosslinking is fulfilled, and the flame-retardant property is good; all the components have synergistic effect, so that the comprehensive performance of the material is improved, and the weather resistance, the mechanical property and the flame retardance of the material are improved.
The following provides a detailed description of preferred embodiments of the invention.
Example 1
Embodiment 1 provides a silane cross-linked low-smoke halogen-free flame-retardant polyolefin material, which comprises a material A and a material B, wherein the material A comprises the following components in parts by weight:
wherein the B material comprises the following components in parts by weight:
wherein the aluminum hydroxide in the material A is aluminum hydroxide coated by the surface of hydroxyl-terminated silicone oil, and the crosslinking initiator in the material B is a hydrophobic peroxide initiator. The mass ratio of the material A to the material B is 1: 1.
In the invention, the surface of the aluminum hydroxide is coated, namely the surface of the aluminum hydroxide is subjected to hydrophobic treatment, and meanwhile, the free water adsorbent is added into the flame-retardant system, so that the flame-retardant effect is enhanced.
The particle size of the magnesium hydroxide is 0.5 mu m, and the particle size of the aluminum hydroxide is 1 mu m; the hydrophobic peroxide initiator is benzoyl peroxide; the silane coupling agent is a silane coupling agent KH 550; in the ethylene-vinyl acetate copolymer, the ratio of ethylene to vinyl acetate is 5: 1; the compatilizer is ethylene-vinyl acetate copolymer grafted by maleic anhydride; in the invention, the compatilizer is added to promote the fusion of the resin and the powder, so that the system is more uniform; the free water adsorbent is zeolite. The free water adsorbent can adsorb crystal water contained in the inorganic flame retardant, so that pre-crosslinking conditions in the manufacturing process, the storage process and the line extrusion process in a silane crosslinking mode can be avoided; the antioxidant in the material A is antioxidant DSTP, and the antioxidant in the material B is antioxidant DSTP; the auxiliary crosslinking agent is lecithin; the lubricant in the material A is paraffin, and the lubricant in the material B is paraffin.
The second purpose of the invention is to provide a preparation method of the silane crosslinking low-smoke halogen-free flame retardant polyolefin material, which comprises the following steps:
(1) adding the components of the material A into an internal mixer for mixing, discharging when the mixing temperature is 130 ℃ to obtain a mixed material A, adding the mixed material A into a double-screw extruder for extruding to obtain an intermediate A; adding the components of the material B into an internal mixer for mixing, discharging when the mixing temperature is 130 ℃ to obtain a material B mixture, adding the material B mixture into a double-screw extruder for extruding to obtain an intermediate B;
(2) and adding the intermediate A and the intermediate B into an internal mixer for internal mixing at 130 ℃, and then extruding and granulating by a single screw and a double screw to obtain the silane crosslinking low-smoke halogen-free flame-retardant polyolefin material.
Example 2
Embodiment 2 provides a silane cross-linked low-smoke halogen-free flame-retardant polyolefin material, which comprises the following components in parts by weight: the formulation components are basically the same as in example 1, except that: the material A comprises a material A and a material B, wherein the material A comprises the following components in parts by weight:
wherein the B material comprises the following components in parts by weight:
example 2
Embodiment 2 provides a silane cross-linked low-smoke halogen-free flame-retardant polyolefin material, which comprises the following components in parts by weight: the formulation components are basically the same as in example 1, except that: the material A comprises the following components in parts by weight:
wherein the B material comprises the following components in parts by weight:
example 3
Embodiment 3 provides a silane crosslinked low-smoke halogen-free flame retardant polyolefin material, which comprises the following components in parts by weight: the formulation components are basically the same as in example 1, except that: the material A comprises the following components in parts by weight:
wherein the B material comprises the following components in parts by weight:
example 4
Embodiment 4 provides a silane cross-linked low-smoke halogen-free flame-retardant polyolefin material, which has the same formula components and preparation method as those in embodiment 1, and is different from that in the following point: the auxiliary crosslinking agent is diethyl cyclohexyl amino ethylene phosphorus; the hydrophobic peroxide initiator is benzoyl tert-butyl peroxide.
Example 5
Embodiment 5 provides a silane cross-linked low-smoke halogen-free flame-retardant polyolefin material, which has the same formula components and preparation method as those of embodiment 1, and is different from that of embodiment 1 in that: the auxiliary crosslinking agent is triallyl phosphate; the hydrophobic peroxide initiator is methyl ethyl ketone peroxide.
Comparative example 1
Comparative example 1 provides a silane cross-linked low-smoke halogen-free flame-retardant polyolefin material, the formula components and the preparation method of which are basically the same as those of example 1, and the difference is that: no free water adsorbent was added.
Comparative example 2
Comparative example 2 provides a silane cross-linked low-smoke halogen-free flame-retardant polyolefin material, which has the same formula components and preparation method as example 1, and is different from the following components: no co-crosslinking agent was added.
Comparative example 3
Comparative example 3 provides a silane cross-linked low-smoke halogen-free flame retardant polyolefin material, which has the same formula components and preparation method as example 1, and is different from the following points: no silane coupling agent was added.
In order to further illustrate the beneficial technical effects of the silane crosslinked low-smoke halogen-free flame retardant polyolefin material disclosed by the embodiment of the invention, the relevant performances of the silane crosslinked low-smoke halogen-free flame retardant polyolefin material in each example are tested according to the national standard, and the test results are shown in table 1.
TABLE 1 results of physicochemical Properties test of examples 1 to 5 and comparative examples 1 to 3
As can be seen from Table 1, the silane cross-linked low-smoke halogen-free flame retardant polyolefin material disclosed in the embodiment of the invention has more excellent flame retardance, insulativity, mechanical properties and aging resistance; the free water adsorbent, the auxiliary crosslinking agent and the silane coupling agent are added to improve the performances, and the excellent comprehensive performance of the silane crosslinked low-smoke halogen-free flame-retardant polyolefin material in the embodiment of the invention is the result of the synergistic effect of the components.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. A silane crosslinking low-smoke halogen-free flame retardant polyolefin material is characterized in that: the material A comprises a material A and a material B, wherein the material A comprises the following components in parts by weight:
wherein the B material comprises the following components in parts by weight:
wherein the aluminum hydroxide in the material A is aluminum hydroxide coated by the surface of hydroxyl-terminated silicone oil, and the crosslinking initiator in the material B is a hydrophobic peroxide initiator; the mass ratio of the material A to the material B is 1: 1; the preparation method of the aluminum hydroxide coated with the hydroxyl-terminated silicone oil surface comprises the following steps: dissolving hydroxyl-terminated silicone oil in acetone to form a solution, then adding aluminum hydroxide, performing ultrasonic dispersion for 10 minutes, adding dibutyltin dilaurate into the ultrasonically dispersed powder, continuing performing ultrasonic dispersion for 10 minutes, and drying in a vacuum drying oven at 80 ℃ to constant weight; the mass ratio of the hydroxyl-terminated silicone oil to the acetone to the aluminum hydroxide to the dibutyltin dilaurate is 0.5:70:100: 0.8.
2. The silane crosslinked low smoke zero halogen flame retardant polyolefin material according to claim 1, characterized in that: the particle size of the magnesium hydroxide is 0.5-1.5 μm, and the particle size of the aluminum hydroxide is 1-2 μm.
3. The silane crosslinked low smoke zero halogen flame retardant polyolefin material according to claim 1, characterized in that: the hydrophobic peroxide initiator is one or more selected from benzoyl peroxide, benzoyl tert-butyl peroxide and methyl ethyl ketone peroxide.
4. The silane crosslinked low smoke zero halogen flame retardant polyolefin material according to claim 1, characterized in that: the silane coupling agent is one or more selected from a silane coupling agent KH550, a silane coupling agent KH560 and a silane coupling agent KH 570.
5. The silane crosslinked low smoke zero halogen flame retardant polyolefin material according to claim 1, characterized in that: in the ethylene-vinyl acetate copolymer, the ratio of ethylene to vinyl acetate is (5-8) to 1.
6. The silane crosslinked low smoke zero halogen flame retardant polyolefin material according to claim 1, characterized in that: the compatilizer is at least one selected from maleic anhydride grafted ethylene-vinyl acetate copolymer and maleic anhydride grafted polyethylene.
7. The silane crosslinked low smoke zero halogen flame retardant polyolefin material according to claim 1, characterized in that: the free water adsorbent is one or more selected from zeolite, activated carbon and silica gel.
8. The silane crosslinked low smoke zero halogen flame retardant polyolefin material according to claim 1, characterized in that: the antioxidant in the material A is at least one selected from antioxidant DSTP and antioxidant 1010, and the antioxidant in the material B is at least one selected from antioxidant DSTP and antioxidant 1010.
9. The silane crosslinked low smoke zero halogen flame retardant polyolefin material according to claim 1, characterized in that: the auxiliary crosslinking agent is one or more selected from lecithin, diethyl cyclohexyl amino ethylene phosphorus and triallyl phosphate; the lubricant in the material A is at least one selected from paraffin and silicone oil, and the lubricant in the material B is at least one selected from paraffin and silicone oil.
10. The silane-crosslinked low-smoke halogen-free flame-retardant polyolefin material according to any one of claims 1 to 9, characterized in that: the preparation method of the silane crosslinking low-smoke halogen-free flame-retardant polyolefin material comprises the following steps:
(1) adding the components of the material A into an internal mixer for mixing, discharging when the mixing temperature is 130-150 ℃ to obtain a mixed material A, adding the mixed material A into a double-screw extruder for extruding to obtain an intermediate A; adding the components of the material B into an internal mixer for mixing, discharging when the mixing temperature is 130-150 ℃ to obtain a material B mixture, adding the material B mixture into a double-screw extruder for extruding to obtain an intermediate B;
(2) and adding the intermediate A and the intermediate B into an internal mixer for internal mixing at the temperature of 130-150 ℃, and then extruding and granulating by a single screw and a double screw to obtain the silane crosslinking low-smoke halogen-free flame-retardant polyolefin material.
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| CN113214568A (en) * | 2021-04-30 | 2021-08-06 | 慈溪宇久电器有限公司 | Modified plastic for extension socket and preparation method thereof |
| CN116135921A (en) * | 2023-03-31 | 2023-05-19 | 苏州通优新材料科技有限公司 | Silane crosslinked polyolefin flame-retardant cable material for energy storage cable, and preparation method and application thereof |
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| CN116135921A (en) * | 2023-03-31 | 2023-05-19 | 苏州通优新材料科技有限公司 | Silane crosslinked polyolefin flame-retardant cable material for energy storage cable, and preparation method and application thereof |
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