CN117106257A - Low-heat-release halogen-free low-smoke flame-retardant grafted material for polyolefin material and application thereof - Google Patents

Low-heat-release halogen-free low-smoke flame-retardant grafted material for polyolefin material and application thereof Download PDF

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Publication number
CN117106257A
CN117106257A CN202311124567.5A CN202311124567A CN117106257A CN 117106257 A CN117106257 A CN 117106257A CN 202311124567 A CN202311124567 A CN 202311124567A CN 117106257 A CN117106257 A CN 117106257A
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low
heat
retardant polyolefin
smoke flame
zone
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陈伟国
汪晓明
瓮振富
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Shanghai Kaibo Cable Special Material Co ltd
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Shanghai Kaibo Cable Special Material Co ltd
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Priority to CN202311124567.5A priority Critical patent/CN117106257A/en
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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
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
    • C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
    • 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
    • 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
    • C08L2201/22—Halogen free composition
    • 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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  • 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)
  • Organic Insulating Materials (AREA)

Abstract

The application provides a low-heat-release halogen-free low-smoke flame-retardant polyolefin material graft material and application thereof, wherein the low-heat-release halogen-free low-smoke flame-retardant polyolefin material graft material has the following properties: tensile strength 15-20 MPa, tensile elongation 500-650% (GB/T1040.3-2006), melt index 2.0-6.0 g/10min,190 ℃ 2.16kg (GB/T3682.1-2018), water content less than 0.50% (GB/T3682.1-2018), density 0.80-1.0 g/cm 3 (GB/T1033.1-2008). The application provides a novel grafted material for low-heat release halogen-free low-smoke flame-retardant polyolefin material and application thereof in halogen-free low-smoke sheath material, which can effectively reduce friction heat of irregular crystalline magnesium hydroxide when a cable sheath is extruded and improve the original cable sheath while not affecting the mechanical property, conductivity breakdown and other properties of the original sheath materialThe strength and elongation of the material increase extrusion fluidity, and have good extrusion performance.

Description

Low-heat-release halogen-free low-smoke flame-retardant grafted material for polyolefin material and application thereof
Technical Field
The application relates to the technical field of cable materials, in particular to a grafting material for a low-heat-release halogen-free low-smoke flame-retardant polyolefin material and application thereof.
Background
In recent years, low-heat-release halogen-free low-smoke B1-level flame-retardant polyolefin sheath material cables are increasingly commonly applied to subways, public buildings, power and information transmission systems, large-scale industrial enterprises and densely populated places. When the low-heat-release halogen-free low-smoke B1-level flame-retardant polyolefin sheath material is prepared, the most used flame retardants are magnesium hydroxide and aluminum hydroxide, and when the aluminum hydroxide is used as the flame retardant, air holes easily appear and the flame-retardant shell forming performance is poorer than that of the magnesium hydroxide during high-temperature extrusion, so that the most used flame retardant system is the magnesium hydroxide.
The magnesium hydroxide flame retardant in the market has various types, the imported magnesium hydroxide at home and abroad has stable performance, the whisker is stabilized to be hexagonal flake, the magnesium hydroxide whisker produced in China at present is mostly needle-shaped, fibrous, rod-shaped and the like, and the performance is unstable, especially in the processing technology, the process fluctuation is larger. The price of the imported magnesium hydroxide flame retardant is more than 10 yuan/Kg higher than that of the domestic magnesium hydroxide flame retardant.
At present, when magnesium hydroxide produced at home is used as a main flame retardant for a low-heat-release halogen-free low-smoke B1-level flame-retardant polyolefin sheath material, in the process of cabling extrusion, the friction heat of a machine head of an extruder is very high, the actual extrusion temperature of friction heat generation is usually higher than the set temperature by more than 50 ℃, and the current value is large, so that the extrusion speed of a cable is low, the production value efficiency of a factory is low, and great trouble is caused to cable manufacture. Therefore, in order to use magnesium hydroxide produced at home at a lower price as a main flame retardant for a low heat release halogen-free low smoke B1 grade flame retardant polyolefin sheathing material, it is necessary to change the processing process of magnesium hydroxide or add a graft material to improve extrusion properties when manufacturing a sheathing material.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior flame retardant, the present application aims to provide a grafted material for low-heat-release halogen-free low-smoke flame retardant polyolefin material and its use, which can be used as a raw material of low-heat-release halogen-free low-smoke B1-level flame retardant polyolefin sheath material, and solve the problem of large friction heat during extrusion of the cable caused by the prior flame retardant.
To achieve the above and other related objects, the present application is achieved by including the following technical means.
The application provides a grafting material for a low-heat-release halogen-free low-smoke flame-retardant polyolefin material, which comprises the following components:
the matrix resin used for the low-heat-release halogen-free low-smoke flame-retardant polyolefin material comprises PE resin, POE resin, KN resin and EVA resin, and the mass ratio of the matrix resin is (5-10): (15-20): (50-60): (5-10).
The PE resin has a melt index of 0.25g/10min or more and a density of 0.93g/cm or less at 150 ℃ and a pressure of 5kg 3 ；
The POE has a melt index of 0.5g/10min or more at 150 ℃ and 5kg pressure;
the melt index of the EVA resin is more than or equal to 4g/10min at 150 ℃ and 5kg pressure;
the KN resin has a melt index of 0.5g/10min or more at 150 ℃ and a pressure of 2.15 kg.
The banburying temperature of the grafting material and the low heat release halogen-free low smoke flame retardant polyolefin material is 180 ℃ to 210 ℃, the banburying time is 10min to 15min, and the temperatures of all the areas of the double screw extruder are as follows: 165-175 ℃ in zone I, 165-175 ℃ in zone II, 165-175 ℃ in zone III, 160-180 ℃ in zone IV, 160-180 ℃ in zone V, 155-165 ℃ in zone VI, 150-160 ℃ in zone VII, 145-155 ℃ in zone VIII, and 135-145 ℃ in zone IX; the temperature of each zone of the single screw extruder is as follows: the temperature of the first area is 135-145 ℃, the temperature of the second area is 135-145 ℃, the temperature of the third area is 135-145 ℃, and the temperature of the machine head is 160-170 ℃.
The grafting material for the low-heat-release halogen-free low-smoke flame-retardant polyolefin material or the grafting material for the low-heat-release halogen-free low-smoke flame-retardant polyolefin material obtained by the performance requirement is used in the low-heat-release halogen-free low-smoke flame-retardant polyolefin material.
The grafting material for the low-heat-release halogen-free low-smoke flame-retardant polyolefin material comprises the following excellent properties:
tensile strength of 15-20 MPa, stretchingThe elongation is 500-650 percent (GB/T1040.3-2006), the melt index is 2.0-6.0 g/10min, the temperature is 190 ℃ and 2.16kg (GB/T3682.1-2018), the water content is less than 0.50 percent (GB/T3682.1-2018), and the density is 0.80-1.0 g/cm 3 (GB/T 1033.1-2008)
Preferably, the tensile strength is 17-20 MPa, and the tensile elongation is 520% -650%.
Preferably, the melt index is 3.0 to 6.0g/10min.
Preferably, the moisture content is < 0.25%.
Preferably, the density is 0.85-0.95 g/cm 3 。
The application discloses the application of the grafted material for the low-heat-release halogen-free low-smoke flame-retardant polyolefin material in preparing low-heat-release halogen-free low-smoke B1-level flame-retardant polyolefin sheath materials.
The application also discloses a preparation method of the flame-retardant polyethylene cable sheath material, which comprises the following steps: plasticizing by an internal mixer, adding matrix resin, silicon-containing shell forming auxiliary agent, lubricating auxiliary agent, antioxidant and color master or toner during plasticizing, and finally adding matrix flame retardant; extruding and granulating in a single screw extruder after banburying is completed; or alternatively, the first and second heat exchangers may be,
the matrix resin, the matrix flame retardant, the siliceous shell forming auxiliary agent, the lubricating auxiliary agent, the antioxidant and the color master batch or the toner are evenly mixed in a high-speed mixer in advance, and then the mixture is fed into a double-screw extruder for plasticizing, and the plasticized mixture is fed into a single-screw extruder for granulating.
According to the preparation method, the banburying temperature is 160-170 ℃ and the banburying time is 10-15 min.
According to the preparation method, the temperatures of all the areas of the twin-screw extruder are as follows: 145-155 ℃ in zone I, 145-155 ℃ in zone II, 145-155 ℃ in zone III, 140-150 ℃ in zone IV, 140-150 ℃ in zone V, 135-145 ℃ in zone VI, 130-140 ℃ in zone VII, 125-135 ℃ in zone VIII, and 115-125 ℃ in zone IX.
According to the preparation method, the temperature of each zone of the single screw extruder is as follows: zone I115-125 ℃, zone II 115-125 ℃, zone III 115-125 ℃, and head 140-150 DEG C
Compared with the prior art, the application has the beneficial effects that:
(1) The grafting material for the low-heat-release halogen-free low-smoke flame-retardant polyolefin material has good compatibility with the magnesium hydroxide flame retardant, and reduces the viscosity of the sheath material, thereby reducing friction heat and screw torque and current during cable extrusion.
(2) The grafting material for the low-heat-release halogen-free low-smoke flame-retardant polyolefin material can ensure the extrusion speed and does not influence the physical and mechanical properties such as stretching of the original sheath.
(3) The grafting material for the low-heat-release halogen-free low-smoke flame-retardant polyolefin material can improve a certain shell forming performance on the combustion performance of the original sheath, so that the material is not easy to crack in the combustion process, and the B1-level heat release requirement and the d 0-level dripping test are easier to pass.
(4) Under the filling of the high-proportion flame retardant (the filling amount is more than or equal to 55%), a small amount of grafting material for the low-heat-release halogen-free low-smoke flame retardant polyolefin material (the adding amount is less than or equal to 5%) is added, so that the tensile property and the tensile strength of the original sheath are improved, and the performance requirements of national standards are met.
(5) The low-heat-release halogen-free low-smoke flame-retardant polyolefin material grafted material comprises the following properties of 15-20 MPa of tensile strength, 500-650% of tensile elongation (GB/T1040.3-2006), 2.0-6.0 g/10min of melt index, 190 ℃ for 2.16kg (GB/T3682.1-2018), less than 0.50% of water content (GB/T3682.1-2018) and 0.80-1.0 g/cm of density 3 (GB/T1033.1-2008); tensile strength of 15-20 MPa, tensile elongation of 500-650% (GB/T1040.3-2006); melt index 2.0-6.0 g/10min,190 ℃ 2.16kg (GB/T3682.1-2018); the water content is less than 0.50 percent (GB/T3682.1-2018), and the density is 0.80-1.0 g/cm 3 (GB/T1033.1-2008); the mechanical property, conductivity breakdown and other properties of the original sheath material are not affected. The grafting material can effectively reduce friction heat of irregular crystalline magnesium hydroxide when the cable sheath is extruded. The strength and the elongation of the original cable sheath material are improved. The banburying temperature is reduced during the mixing of an internal mixer, and the material has very good properties with the original halogen-free sheath material base material and the flame retardantGood compatibility.
In a word, the application provides a use method of the grafting material for the low-heat-release halogen-free low-smoke flame-retardant polyolefin material, which effectively reduces the viscosity of the low-heat-release halogen-free low-smoke B1-level flame-retardant polyolefin sheath material, improves the shell forming property and the combustion performance of the material, reduces the friction heat and the extrusion current of a screw, and has good extrusion performance.
Drawings
FIG. 1 is a torque graph of a torque rheometer for a commercial low heat release halogen-free low smoke flame retardant polyolefin material without the addition of the graft material
FIGS. 2,3,4,5 are torque rheometer torque plots for low heat release halogen-free low smoke flame retardant polyolefin material with different levels of the graft.
Detailed Description
Further advantages and effects of the present application will become apparent to those skilled in the art from the disclosure of the present application, which is described by the following specific examples.
Before the embodiments of the application are explained in further detail, it is to be understood that the application is not limited in its scope to the particular embodiments described below; it is also to be understood that the terminology used in the examples of the application is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the application. The test methods in the following examples, in which specific conditions are not noted, are generally conducted under conventional conditions or under conditions recommended by the respective manufacturers.
Where numerical ranges are provided in the examples, it is understood that unless otherwise stated herein, both endpoints of each numerical range and any number between the two endpoints are significant both in the numerical range. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. In addition to the specific methods, devices, materials used in the embodiments, any methods, devices, and materials of the prior art similar or equivalent to those described in the embodiments of the present application may be used to practice the present application according to the knowledge of one skilled in the art and the description of the present application.
The application provides a grafting material for a low-heat-release halogen-free low-smoke flame-retardant polyolefin material, which comprises the following components:
the matrix resin used for the low-heat-release halogen-free low-smoke flame-retardant polyolefin material comprises PE resin, POE resin, KN resin and EVA resin, and the mass ratio of the matrix resin is (5-10): (15-20): (50-60): (5-10).
The PE resin has a melt index of 0.25g/10min or more and a density of 0.93g/cm or less at 150 ℃ and a pressure of 5kg 3 ；
The POE has a melt index of 0.5g/10min or more at 150 ℃ and 5kg pressure;
the melt index of the EVA resin is more than or equal to 4g/10min at 150 ℃ and 5kg pressure;
the KN resin has a melt index of 0.5g/10min or more at 150 ℃ and a pressure of 2.15 kg.
The low-heat-release halogen-free low-smoke flame-retardant polyolefin material grafted material comprises the following properties of 15-20 MPa of tensile strength, 500-650% of tensile elongation (GB/T1040.3-2006), 2.0-6.0 g/10min of melt index, 190 ℃ for 2.16kg (GB/T3682.1-2018), less than 0.50% of water content (GB/T3682.1-2018) and 0.80-1.0 g/cm of density 3 (GB/T1033.1-2008); tensile strength of 15-20 MPa, tensile elongation of 500-650% (GB/T1040.3-2006); melt index 2.0-6.0 g/10min,190 ℃ 2.16kg (GB/T3682.1-2018); the water content is less than 0.50 percent (GB/T3682.1-2018), the density is 0.80-1.0 g/cm 3 (GB/T1033.1-2008); the mechanical property, the conductivity breakdown and other properties of the original sheath material are not affected; the grafting material can effectively reduce friction heat of irregular crystalline magnesium hydroxide when the cable sheath is extruded; the strength and the elongation of the original cable sheath material are improved; reducing production during mixing in internal mixersHas good compatibility with the original halogen-free sheath material base material and the flame retardant.
The method for adding the grafting material for the low-heat-release halogen-free low-smoke flame-retardant polyolefin material uses the grafting material and the low-heat-release halogen-free low-smoke flame-retardant polyolefin material, the banburying temperature is 180-210 ℃, the banburying time is 10-15 min, and the temperatures of all areas of the double-screw extruder are as follows: 165-175 ℃ in zone I, 165-175 ℃ in zone II, 165-175 ℃ in zone III, 160-180 ℃ in zone IV, 160-180 ℃ in zone V, 155-165 ℃ in zone VI, 150-160 ℃ in zone VII, 145-155 ℃ in zone VIII, and 135-145 ℃ in zone IX; the temperature of each zone of the single screw extruder is as follows: the temperature of the first area is 135-145 ℃, the temperature of the second area is 135-145 ℃, the temperature of the third area is 135-145 ℃, and the temperature of the machine head is 160-170 ℃.
Example 1: the grafting material for preparing the low-heat-release halogen-free low-smoke flame-retardant polyolefin material comprises the following components:
80 parts of matrix resin, 3 parts of rheological master batch, 1 part of processing aid and 1 part of catalyst aid. The matrix resin used for the low-heat-release halogen-free low-smoke flame-retardant polyolefin material comprises PE resin, POE resin, KN resin and EVA resin, and the mass ratio of the matrix resin is 6:18:55:8. the PE resin has a melt index of 0.25g/10min or more and a density of 0.93g/cm or less at 150 ℃ and a pressure of 5kg 3 The method comprises the steps of carrying out a first treatment on the surface of the The POE has a melt index of 0.5g/10min or more at 150 ℃ and 5kg pressure; the melt index of the EVA resin is more than or equal to 4g/10min at 150 ℃ and 5kg pressure; the KN resin has a melt index of 0.5g/10min or more at 150 ℃ and a pressure of 2.15 kg.
The properties of the materials adopted in the embodiment of the application are as follows:
basic properties of several grafts with different addition ratios
FIG. 1 is a torque graph of a torque rheometer of a low heat release halogen-free low smoke flame retardant polyolefin material which is not added with the graft material in the market, FIGS. 2,3 and 4 are torque rheometers of low heat release halogen-free low smoke flame retardant polyolefin material which is added with different contents of the graft material, wherein the torque of the low heat release halogen-free low smoke flame retardant polyolefin material which is not added with the graft material in FIG. 1 is 151 N.m, the torque of the low heat release halogen-free low smoke flame retardant polyolefin material which is added with 2% of the graft material in FIG. 2 is 145 N.m, the torque of the low heat release halogen-free low smoke flame retardant polyolefin material which is added with 4% of the graft material in FIG. 3 is 124 N.m, the torque of the low heat release halogen-free low smoke flame retardant polyolefin material which is added with 6% of the graft material in FIG. 4 is 115 N.m, and the torque of the low heat release halogen-free low smoke flame retardant polyolefin material which is added with 8% of the graft material in FIG. 5 is 99 N.m, and the content of the halogen-free low smoke flame retardant polyolefin material which is added with the present application is obviously improved.
The above examples are merely illustrative of the efficacy of the application and are not intended to limit the application. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the application. Accordingly, it is intended that all equivalent modifications and variations of the application be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims (7)

1. A grafting material for low-heat release halogen-free low-smoke flame-retardant polyolefin material is characterized in that,
the grafting material for the low-heat release halogen-free low-smoke flame-retardant polyolefin material comprises the following components:
80 to 100 parts of matrix resin
2-5 parts of rheological master batch
0.5 to 2 parts of processing aid
0.5 to 2 portions of catalyst auxiliary agent.
2. The graft material for low-heat-release halogen-free low-smoke flame-retardant polyolefin material according to claim 1, wherein the matrix resin used for the graft material for low-heat-release halogen-free low-smoke flame-retardant polyolefin material comprises PE resin, POE resin, KN resin and EVA resin, and the mass ratio of the matrix resin is (5-10): (15-20): (50-60): (5-10).
3. The graft material for a low heat release halogen-free low smoke flame retardant polyolefin material according to claim 2, wherein the PE resin has a melt index of 0.25g/10min or more and a density of 0.93g/cm or less at 150 ℃ and 5kg pressure 3 ；
The POE has a melt index of 0.5g/10min or more at 150 ℃ and 5kg pressure;
the melt index of the EVA resin is more than or equal to 4g/10min at 150 ℃ and 5kg pressure;
the KN resin has a melt index of 0.5g/10min or more at 150 ℃ and a pressure of 2.15 kg.
4. The grafted material for low-heat-release halogen-free low-smoke flame-retardant polyolefin materials according to claim 1, wherein the grafted material for low-heat-release halogen-free low-smoke flame-retardant polyolefin materials comprises the following properties of 15-20 MPa of tensile strength, 500-650% of tensile elongation (GB/T1040.3-2006), 2.0-6.0 g/10min of melt index, 190 ℃ of 2.16kg (GB/T3682.1-2018), less than 0.50% of water content (GB/T3682.1-2018) and 0.80-1.0 g/cm of density 3 (GB/T 1033.1-2008)。
5. The graft material for a low heat release halogen-free low smoke flame retardant polyolefin material according to claim 1, wherein the tensile strength is 15-20 MPa, and the tensile elongation is 500% -650% (GB/T1040.3-2006); melt index 2.0-6.0 g/10min,190 ℃ 2.16kg (GB/T3682.1-2018); the water content is less than 0.50 percent (GB/T3682.1-2018), the density is 0.80-1.0 g/cm 3 (GB/T1033.1-2008); the mechanical property, the conductivity breakdown and other properties of the original sheath material are not affected; the grafting material can effectively reduce friction heat of irregular crystalline magnesium hydroxide when the cable sheath is extruded; the strength and the elongation of the original cable sheath material are improved; the banburying temperature is reduced during the mixing of the banburying machine, and the halogen-free sheath material has good compatibility with the original halogen-free sheath material base material and the flame retardant.
6. A method for preparing the graft material for the low-heat-release halogen-free low-smoke flame-retardant polyolefin material according to any one of claims 1 to 5, which is characterized in that the banburying temperature of the graft material and the low-heat-release halogen-free low-smoke flame-retardant polyolefin material is 180 ℃ to 210 ℃, the banburying time is 10min to 15min, and the temperatures of all areas of a double-screw extruder are: 165-175 ℃ in zone I, 165-175 ℃ in zone II, 165-175 ℃ in zone III, 160-180 ℃ in zone IV, 160-180 ℃ in zone V, 155-165 ℃ in zone VI, 150-160 ℃ in zone VII, 145-155 ℃ in zone VIII, and 135-145 ℃ in zone IX; the temperature of each zone of the single screw extruder is as follows: the temperature of the first area is 135-145 ℃, the temperature of the second area is 135-145 ℃, the temperature of the third area is 135-145 ℃, and the temperature of the machine head is 160-170 ℃.
7. Use of the graft material for low heat release halogen-free low smoke flame retardant polyolefin material according to any one of claims 1 to 5 in low heat release halogen-free low smoke flame retardant polyolefin material.
CN202311124567.5A 2023-09-01 2023-09-01 Low-heat-release halogen-free low-smoke flame-retardant grafted material for polyolefin material and application thereof Pending CN117106257A (en)

Priority Applications (1)

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CN202311124567.5A CN117106257A (en) 2023-09-01 2023-09-01 Low-heat-release halogen-free low-smoke flame-retardant grafted material for polyolefin material and application thereof

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Application Number Priority Date Filing Date Title
CN202311124567.5A CN117106257A (en) 2023-09-01 2023-09-01 Low-heat-release halogen-free low-smoke flame-retardant grafted material for polyolefin material and application thereof

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CN117106257A true CN117106257A (en) 2023-11-24

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