CN112679864A - Graphene flame-retardant antistatic composite material for bearing seat and preparation method thereof - Google Patents
Graphene flame-retardant antistatic composite material for bearing seat and preparation method thereof Download PDFInfo
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 144
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 121
- 239000003063 flame retardant Substances 0.000 title claims abstract description 114
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- 239000000463 material Substances 0.000 claims description 30
- 239000004698 Polyethylene Substances 0.000 claims description 24
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 21
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 21
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- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 13
- 229910052760 oxygen Inorganic materials 0.000 claims description 13
- 239000001301 oxygen Substances 0.000 claims description 13
- UAUDZVJPLUQNMU-UHFFFAOYSA-N Erucasaeureamid Natural products CCCCCCCCC=CCCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-UHFFFAOYSA-N 0.000 claims description 12
- 238000005516 engineering process Methods 0.000 claims description 12
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- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims description 7
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- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 6
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- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 4
- 239000008116 calcium stearate Substances 0.000 claims description 4
- 235000013539 calcium stearate Nutrition 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 4
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 4
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Abstract
The invention provides a graphene flame-retardant antistatic composite material for a bearing seat, which is prepared from the following raw materials in percentage by weight: 30-50% of mixed polypropylene, 10-20% of high-density polyethylene, 15-25% of alkali-free glass fiber, 1-30% of flame retardant, 1-10% of toughening agent, 0.1-0.5% of graphene, 0.5-4% of antistatic agent, 1-10% of grafting agent, 0.1-0.5% of antioxidant, 0.1-0.5% of anti-ultraviolet agent and 1-1.5% of lubricant. The invention also provides a preparation method of the composition. The carrier roller bearing seat made of the graphene flame-retardant antistatic material has the advantages of high strength, low cost, good flame-retardant property, static resistance, simple processing and forming process, light weight, low requirement on an extruder, capability of meeting various size requirements and the like, can be used in the operating environment of coal mines, chemical engineering and other scenes which are easy to explode and fire, and has higher safety coefficient.
Description
Technical Field
The invention belongs to the technical field of high polymer material processing, and particularly relates to a graphene flame-retardant antistatic composite material for a bearing seat and a preparation method thereof.
Background
The bearing block is one of important components used with the carrier roller, and is mainly used in a belt conveyor. The carrier roller bearing blocks in the market are almost made of steel materials, and have certain disadvantages that firstly, the steel bearing blocks are high in density, heavy in weight and easy to be chemically corroded due to environmental limitation; secondly, the steel bearing seat is not suitable for dangerous working environments such as coal mines and the like which are easy to cause fire, explosion and the like due to high-speed friction in the process of equipment operation, and has larger potential safety hazard. Compared with the prior art, the polymer-based carrier roller bearing seat has gradually replaced a steel carrier roller bearing seat due to the advantages of excellent processing performance, capability of being directionally modified according to requirements to meet various working and using environments and the like.
CN104177709A discloses "halogen-free flame-retardant conductive polypropylene composite material" which takes polypropylene as a base material, and is dispersed in a matrix resin by twin-screw through adding a plurality of auxiliaries such as glass fiber, flame retardant, graphite, carbon black, elastomer, etc.; the polypropylene is used as a matrix, the addition amount of the flame retardant is particularly large (23-31%), the processing is difficult, and the mechanical property of the material is greatly influenced; CN103897263A discloses a flame-retardant antistatic polypropylene composite material, which takes polypropylene as a substrate, has excessive flame retardant addition (10-100 parts of magnesium hydroxide), has great influence on material mechanics due to more powder, and causes the material application to be limited; CN107216549A discloses a shell for a high-strength antistatic weather-resistant power instrument and a preparation method thereof, wherein the addition amount of graphene is too much (2-4 parts), the cost is high, and the shell is not beneficial to mass production on the current scale; CN109608732A discloses an antistatic flame-retardant polyethylene composition, particles, a pipe material, a preparation method thereof and application of the polyethylene composition, the particles and the pipe material as a coal mine pipe material, the patent takes high-density polyethylene as a substrate, the strength of the substrate is poorer than that of polypropylene (the tensile strength is lower by 10 percent), the shrinkage rate is higher than that of the polypropylene, the requirement of a special material for a bearing seat on the size is not facilitated, and simultaneously, the addition amount of graphene is higher (2-4 parts), the cost is high, and the large-scale production and sale are.
The polymer-based bearing seat can achieve flame-retardant and antistatic effects through modification under the condition of meeting high strength, can meet the requirement of working environments which are easy to explode, such as coal mines, chemical engineering and the like, and simultaneously has the remarkable advantages of excellent chemical corrosion resistance, light weight, impact resistance and the like. The flame retardant generally comprises a nitrogen-phosphorus composite flame retardant, a hydroxide flame retardant and the like, the antistatic agent generally comprises conductive carbon black, acetylene black, graphite, a carbon nanotube, a high-molecular conductive agent and the like, and the flame retardant and the antistatic agent have the problems of high addition amount, great reduction of the strength of a product and the like, so that the flame retardant and the antistatic agent with low addition amount are required to be found in order to ensure that the product has high strength and can achieve the flame retardant and antistatic effects.
Disclosure of Invention
Aiming at the defects of the conventional macromolecular flame-retardant antistatic bearing pedestal on the market and solving the problems in the prior art, the invention aims to provide the graphene flame-retardant antistatic composite material for the bearing pedestal and the preparation method thereof.
In order to realize the technical purpose of the invention, the technical scheme of the invention is as follows:
the graphene flame-retardant antistatic composite material for the bearing seat is prepared from the following raw materials in percentage by weight:
the mixed polypropylene is formed by mixing conventional polypropylene and reinforced polypropylene, and the weight ratio of the conventional polypropylene to the reinforced polypropylene is (25-35): (1-10).
At present, phosphorus-nitrogen flame retardants, hydroxide flame retardants, conductive carbon black, graphite and the like are mostly selected as flame retardants and antistatic agents on the market, in order to achieve the flame-retardant and antistatic effects, the auxiliary agents generally have the condition of high addition amount, so that the strength of the product is greatly reduced, the service life is reduced, and the engineering use is difficult to meet.
The steel carrier roller bearing seat has the advantages of high strength, long service life and the like, but static electricity is easily generated in the process of high-speed and long-time operation, and dangerous accidents such as explosion, fire and the like are easily caused in special environments such as coal mines and the like. The invention successfully solves the hidden trouble of static electricity generated during the operation of the carrier roller bearing seat by using the high polymer material, has the characteristic of flame retardance and can meet the operating environment such as mining and the like which are easy to explode and fire.
Preferably, the flame retardant is one or more of red phosphorus, magnesium hydroxide and aluminum hydroxide which are coated by microcapsules; and/or
The weight percentage content of the flame retardant is 1-10%.
Preferably, the flame retardant is microcapsule-coated red phosphorus; the weight percentage content of the red phosphorus coated by the microcapsule is 1-6%.
Preferably, the antistatic agent is one or more of graphite, carbon nano tubes, acetylene black and conductive carbon black; and/or
The weight percentage content of the antistatic agent is 0.5-2.5%.
Preferably, the conventional polypropylene is copolymerized polypropylene, and the molecular weight is 8-15 ten thousand; the copolymerized polypropylene is formed by copolymerizing propylene and ethylene, wherein the content of the propylene is 95 percent, and the content of the ethylene is 5 percent; and/or
The high density polyethylene is 100 grade polyethylene, and the molecular weight is 4-30 ten thousand.
Preferably, the alkali-free glass fibers have a diameter in the range of 8 to 14 microns.
Preferably, the toughening agent is one or more of POE, SBS and SEBS; and/or
The grafting agent is one or more of PP grafted maleic anhydride and PE grafted maleic anhydride; and/or
The antioxidant is one or more of antioxidant 1010 and antioxidant 168; and/or
The anti-ultraviolet agent is one or more of UV531 and UV 770; and/or
The lubricant is one or more of erucamide, zinc stearate and calcium stearate.
Most preferably, the composite material is prepared from the following raw materials in percentage by weight: 43% of mixed polypropylene, 17% of high-density polyethylene, 20% of alkali-free glass fiber, 6% of flame retardant, 5% of toughening agent, 0.3% of graphene, 1.7% of antistatic agent, 5% of grafting agent, 0.5% of antioxidant, 0.5% of anti-ultraviolet agent and 1% of lubricant;
wherein, in the mixed polypropylene, the mass ratio of the conventional polypropylene to the stiffening polypropylene is 30: 5;
the conventional polypropylene is copolymerized polypropylene, and the molecular weight is 10 ten thousand; the copolymerized polypropylene is copolymerized by propylene and ethylene, wherein the content of the propylene is 95 percent, and the content of the ethylene is 5 percent;
the reinforced polypropylene has the following specifications: injection molding grade reinforced polypropylene;
the high-density polyethylene is 100-grade polyethylene and has a molecular weight of 20 ten thousand;
the diameter of the alkali-free glass fiber is 13 micrometers;
the flame retardant is red phosphorus coated by microcapsules;
the graphene is a high-conductivity enhanced graphene product provided by Heizhou sixth-element material science and technology limited company, and the product model is as follows: SE1233, the performance parameters of graphene are: BET of 505m2The mass fraction of oxygen is 0.9 percent, and the mass fraction of D50 is 25 mu m;
the toughening agent is POE;
the antistatic agent is a carbon nano tube;
the grafting agent is PP grafted maleic anhydride;
the antioxidant is as follows: an antioxidant 1010;
the anti-ultraviolet agent is: UV 531;
the lubricant is: erucamide.
The preparation method of the graphene flame-retardant antistatic composite material for the bearing seat comprises the following steps: mixing and stirring the mixed polypropylene and the high-density polyethylene according to the formula amount, mixing and stirring the graphene, the flame retardant, the antistatic agent, the toughening agent, the grafting agent, the antioxidant, the uvioresistant agent and the lubricant, simultaneously adding the two uniformly stirred mixtures into a double-screw extruder for extrusion, and simultaneously adding the alkali-free glass fiber according to the formula amount into a fiber adding port of the double-screw extruder to obtain the graphene flame-retardant antistatic composite material for the bearing block.
Preferably, the parameters of the twin-screw extrusion are set as follows: the temperatures from the first section to the tenth section are respectively 165-.
The invention has the following beneficial effects:
the carrier roller bearing seat produced by using the graphene flame-retardant antistatic composite material prepared by the invention can be used in the operating environments of coal mines, chemical industry and the like which are easy to generate explosion and fire.
The performance of the polymer composite material obtained by the formula and the process is detected, and the obtained main performance data is as follows, so that the basic requirements for manufacturing the carrier roller bearing seat product are met: the tensile strength is more than or equal to 50MPa, the bending strength is more than or equal to 60MPa, the bending modulus is more than or equal to 3000MPa, and the flame retardant property is UL-94: v-0 and surface resistance less than or equal to 109Omega, density less than or equal to 1.4g/cm3Hardness (Shore Hardness) is not less than 62D, and notched impact strength of cantilever beam is not less than 25KJ/m2And the dimensional shrinkage is less than or equal to 0.51 percent.
The graphene flame-retardant antistatic composite material has good comprehensive performance, and has good economic benefit and application prospect. The carrier roller bearing seat made of the graphene flame-retardant antistatic material has the advantages of high strength, low cost, good flame-retardant property, static resistance, simple processing and forming process, light weight, low requirement on an extruder, capability of meeting various size requirements and the like, can be used in the operating environment of coal mines, chemical engineering and other scenes which are easy to explode and fire, and has higher safety coefficient.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a diagram of a finished graphene flame-retardant antistatic composite material for a bearing seat.
Detailed Description
The following examples are given to facilitate a better understanding of the invention, but do not limit the invention. The experimental procedures in the following examples are conventional unless otherwise specified. The test materials used in the following examples were purchased from conventional biochemicals, unless otherwise specified. The quantitative tests in the following examples, all set up three replicates and the results averaged.
The graphene flame-retardant antistatic composite material for the bearing seat comprises the following raw material components in percentage by weight:
wherein:
the mixed polypropylene is formed by mixing conventional polypropylene (PP) and reinforced polypropylene (reinforced PP) according to the mass ratio of: PP: stiffening PP ═ (25-35): (1-10);
the conventional polypropylene is copolymerized polypropylene, and the molecular weight is 8-15 ten thousand. The copolymerized polypropylene is formed by copolymerizing propylene and ethylene, wherein the content of the propylene is 95 percent, and the content of the ethylene is 5 percent.
The reinforced polypropylene has the specification that: injection molding grade reinforced polypropylene. The reinforced polypropylene is formed by adding a nucleating agent into polypropylene to improve the strength of the polypropylene, and at present, only injection-molding-grade reinforced PP is required, and no requirements are required on various parameters.
The high-density polyethylene is 100-grade polyethylene and has molecular weight of 4-30 ten thousand.
The alkali-free glass fiber is a glass fiber subjected to surface treatment, is directly purchased and has a diameter of 8-14 microns;
the flame retardant is one or more of red phosphorus, magnesium hydroxide and aluminum hydroxide which are coated by microcapsules;
the antistatic agent is one or more of graphite, carbon nano tubes, acetylene black and conductive carbon black;
the graphene is a high-conductivity enhanced graphene product provided by Heizhou sixth-element material science and technology limited company, and the product model is as follows: SE1233, the performance parameters of graphene are: BET of 505m2The mass fraction of oxygen is 0.9 percent, and the mass fraction of D50 is 25 mu m;
the toughening agent is selected from one or more of POE, SBS and SEBS;
the grafting agent is one or more of polypropylene grafted maleic anhydride (PP grafted maleic anhydride) and polyethylene grafted maleic anhydride (PE grafted maleic anhydride);
the antioxidant is one or more of antioxidant 1010 (chemical name: tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester) and antioxidant 168 (chemical name: tris [2, 4-di-tert-butylphenyl ] phosphite);
the anti-ultraviolet agent is selected from one or more of UV531 and UV 770;
the lubricant is one or more selected from erucamide, zinc stearate and calcium stearate.
In the present application, one or more of the expressions "· · appear in various places", and when two or more of them are selected, they can be mixed in any proportion to meet the use requirements.
The preparation method of the graphene flame-retardant antistatic composite material for the bearing seat comprises the following steps:
accurately weighing resin (mixed polypropylene and high-density polyethylene) particles in the formula, accurately weighing graphene and other powder (a flame retardant, an antistatic agent, a toughening agent, a grafting agent, an antioxidant, an uvioresistant agent and a lubricant) according to the formula amount, respectively and uniformly mixing and stirring in a high-speed stirrer for 10-30min, then accurately adding the two uniformly-stirred mixtures into a double-screw extruder through a hopper through a weightlessness scale for extrusion, simultaneously adding a certain amount of alkali-free glass fibers into a fiber adding port of the double-screw extruder, adjusting the feeding rate to be 30-50rpm and the rotating speed of a main machine to be 300-500rpm, and enabling the content of the alkali-free glass fibers of the final particles to be in accordance with the addition amount in the formula. Finally, preparing the graphene flame-retardant antistatic composite material particles.
Wherein the parameters of the twin-screw extrusion are set as follows: the temperatures from the first section to the tenth section are respectively 165-.
The optimization experiment of the application is as follows:
1. in the invention, compared with other flame retardants such as phosphorus-nitrogen and hydroxide, the microcapsule-coated red phosphorus has small addition amount, can achieve higher flame-retardant grade, has small addition amount and has small influence on the strength of the base material; meanwhile, compared with the common red phosphorus powder, the microcapsule-coated red phosphorus powder is not easy to spontaneously combust, absorb moisture, cause dust, have high processing safety coefficient, high impact resistance, good dispersibility and high physical and mechanical properties, and can obviously improve the thermal stability and the flame retardance of the product (the addition of 6 percent can ensure that the vertical combustion UL-94 of the product passes V-0 level, and the test data of the embodiment 5 are detailed).
2. Graphene is selected to be used as an auxiliary aid of an antistatic agent, a flame-retardant synergist and a reinforcing aid of a material, and the graphene can have a high synergistic antistatic effect at a small addition amount (for example, the surface resistance of a product is 10 under the addition amount of 1.7% of conductive carbon black)10Omega, 0.3 percent of graphene is added on the basis (after the addition, the formula of the invention in the embodiment 4 is obtained), and the surface resistance of the product is improved to 10 by preparing according to the method in the embodiment 3 of the invention8Ω); meanwhile, the graphene has a good effect of improving the strength of the product, and can make up for the defect of strength reduction of matrix resin caused by other fillers (the tensile strength of the material can be improved by more than 10% by adding 0.3% of graphene under the same condition); in addition, the addition of graphene has a certain auxiliary effect on the flame retardance of the product (under the same condition, the addition of 0.3% of graphene can promote the UL-94 vertical combustion of the material from V-1 to V-0 grade, for example 5 is compared with comparative example 1).
3. In order to meet the requirement of a high-molecular injection molding process, the resin matrix is formed by combining mixed polypropylene and high-density polyethylene, and the mixed polypropylene or the high-density polyethylene is independently selected and has the defects of high melt index, insufficient strength and the like, so that the processing and the forming are not facilitated, the strength requirement of the bearing seat material can be met through the combination of the two resins, the continuous injection molding production is facilitated, various sizes of the bearing seat material can be customized according to the requirement, and the condition that steel is not standard and cannot be purchased does not exist.
4. The toughening agent in the formula has a positive effect on the dimensional stability of the material while improving the toughness of the polymer composite material, and the shrinkage of the raw material can be reduced from 0.89% to within 0.51% by adding 5% of POE, SBS or SEBS.
Example 1
The graphene flame-retardant antistatic composite material for the bearing seat comprises the following raw material components in percentage by weight:
44% of mixed polypropylene, 18% of high-density polyethylene, 23% of alkali-free glass fiber, 1% of flame retardant, 10% of toughening agent, 0.5% of graphene, 0.5% of antistatic agent, 1% of grafting agent, 0.1% of antioxidant, 0.5% of anti-ultraviolet agent and 1.4% of lubricant.
Wherein, in the mixed polypropylene, the mass ratio of the conventional polypropylene to the stiffening polypropylene is 25: 10;
conventional polypropylene is a co-polypropylene with a molecular weight of 10 ten thousand. The copolymerized polypropylene is formed by copolymerizing propylene and ethylene, wherein the content of the propylene is 95 percent, and the content of the ethylene is 5 percent.
The reinforced polypropylene has the following specifications: injection molding grade reinforced polypropylene.
The high density polyethylene is a grade 100 polyethylene, having a molecular weight of 20 ten thousand.
The diameter of the alkali-free glass fiber is 14 micrometers;
the fire retardant is red phosphorus coated by microcapsules;
the graphene is a high-conductivity enhanced graphene product provided by Heizhou sixth-element material science and technology limited company, and the product model is as follows: SE1233, the performance parameters of graphene are: BET of505m2The mass fraction of oxygen is 0.9 percent, and the mass fraction of D50 is 25 mu m;
the toughening agent is POE;
the antistatic agent is graphite;
the grafting agent is PP grafted maleic anhydride;
the antioxidant is as follows: an antioxidant 1010;
the uvioresistant agent is: UV 531;
the lubricant is: and (3) zinc stearate.
The preparation method of the graphene flame-retardant antistatic composite material for the bearing seat comprises the following steps:
accurately weighing resin (mixed polypropylene and high-density polyethylene) particles in the formula, accurately weighing graphene and other powder (a flame retardant, an antistatic agent, a toughening agent, a grafting agent, an antioxidant, an uvioresistant agent and a lubricant) according to the formula amount, respectively and uniformly mixing and stirring in a high-speed stirrer for 30min, then accurately adding the two uniformly-stirred mixtures into a double-screw extruder through a hopper through a weightlessness scale for extrusion, simultaneously adding a certain amount of alkali-free glass fibers into a fiber adding port of the double-screw extruder, adjusting the feeding rate to be 40rpm and the rotating speed of a main machine to be 400rpm, and enabling the content of the alkali-free glass fibers of the final particles to be in accordance with the addition amount in the formula. Finally, preparing the graphene flame-retardant antistatic composite material particles.
Wherein the parameters of the twin-screw extrusion are set as follows: the temperatures of the first stage to the tenth stage were 180 ℃, 200 ℃, 1220 ℃, 220 ℃, 240 ℃ for the head temperature, 400rpm for the main machine, and 40rpm for the feeding rate, respectively. The pellets were pelletized by twin screw extrusion and the resulting pellets were sampled to test performance.
Example 2
The graphene flame-retardant antistatic composite material for the bearing seat comprises the following raw material components in percentage by weight:
44% of mixed polypropylene, 20% of high-density polyethylene, 15% of alkali-free glass fiber, 6% of flame retardant, 5% of toughening agent, 0.5% of graphene, 2.5% of antistatic agent, 5% of grafting agent, 0.5% of antioxidant, 0.1% of anti-ultraviolet agent and 1.4% of lubricant.
Wherein, in the mixed polypropylene, the mass ratio of the conventional polypropylene to the stiffening polypropylene is 35: 1;
conventional polypropylene is a co-polypropylene with a molecular weight of 10 ten thousand. The copolymerized polypropylene is formed by copolymerizing propylene and ethylene, wherein the content of the propylene is 95 percent, and the content of the ethylene is 5 percent.
The reinforced polypropylene has the following specifications: injection molding grade reinforced polypropylene.
The high density polyethylene is a grade 100 polyethylene, having a molecular weight of 20 ten thousand.
The diameter of the alkali-free glass fiber is 14 micrometers;
the flame retardant is aluminum hydroxide;
the graphene is a high-conductivity enhanced graphene product provided by Heizhou sixth-element material science and technology limited company, and the product model is as follows: SE1233, the performance parameters of graphene are: BET of 505m2The mass fraction of oxygen is 0.9 percent, and the mass fraction of D50 is 25 mu m;
the toughening agent is SEBS;
the antistatic agent is conductive carbon black;
the grafting agent is PE grafted maleic anhydride;
the antioxidant is as follows: an antioxidant 168;
the uvioresistant agent is: UV 770;
the lubricant is: calcium stearate.
The preparation method of the graphene flame-retardant antistatic composite material for the bearing seat comprises the following steps: the preparation method is the same as that of the example 1.
The pellets were pelletized by twin screw extrusion and the resulting pellets were sampled to test performance.
Example 3
The graphene flame-retardant antistatic composite material for the bearing seat comprises the following raw material components in percentage by weight:
30% of mixed polypropylene, 11% of high-density polyethylene, 15% of alkali-free glass fiber, 30% of flame retardant, 10% of toughening agent, 0.5% of graphene, 0.5% of antistatic agent, 1% of grafting agent, 0.1% of antioxidant, 0.5% of anti-ultraviolet agent and 1.4% of lubricant.
Wherein in the mixed polypropylene, the mass ratio of the conventional polypropylene to the reinforced polypropylene is 25: 10;
conventional polypropylene is a co-polypropylene with a molecular weight of 10 ten thousand. The copolymerized polypropylene is formed by copolymerizing propylene and ethylene, wherein the content of the propylene is 95 percent, and the content of the ethylene is 5 percent.
The reinforced polypropylene has the following specifications: injection molding grade reinforced polypropylene.
The high density polyethylene is a grade 100 polyethylene, having a molecular weight of 20 ten thousand.
The diameter of the alkali-free glass fiber is 14 micrometers;
the flame retardant is aluminum hydroxide;
the graphene is a high-conductivity enhanced graphene product provided by Heizhou sixth-element material science and technology limited company, and the product model is as follows: SE1233, the performance parameters of graphene are: BET of 505m2The mass fraction of oxygen is 0.9 percent, and the mass fraction of D50 is 25 mu m;
the toughening agent is POE;
the antistatic agent is graphite;
the grafting agent is: grafting PP with maleic anhydride;
the antioxidant is as follows: an antioxidant 1010;
the uvioresistant agent is: UV 531;
the lubricant is: and (3) zinc stearate.
The preparation method of the graphene flame-retardant antistatic composite material for the bearing seat comprises the following steps: the preparation method is the same as that of the example 1.
The pellets were pelletized by twin screw extrusion and the resulting pellets were sampled to test performance.
Example 4
The graphene flame-retardant antistatic composite material for the bearing seat comprises the following raw material components in percentage by weight:
45% of mixed polypropylene, 30% of high-density polyethylene, 15% of alkali-free glass fiber, 6% of flame retardant, 5% of toughening agent, 0.3% of graphene, 1.7% of antistatic agent, 5% of grafting agent, 0.5% of antioxidant, 0.5% of anti-ultraviolet agent and 1% of lubricant.
Wherein, in the mixed polypropylene, the mass ratio of the conventional polypropylene to the stiffening polypropylene is 30: 5;
conventional polypropylene is a co-polypropylene with a molecular weight of 10 ten thousand. The copolymerized polypropylene is formed by copolymerizing propylene and ethylene, wherein the content of the propylene is 95 percent, and the content of the ethylene is 5 percent.
The reinforced polypropylene has the following specifications: injection molding grade reinforced polypropylene.
The high density polyethylene is a grade 100 polyethylene, having a molecular weight of 20 ten thousand.
The diameter of the alkali-free glass fiber is 13 micrometers;
the flame retardant is red phosphorus;
the graphene is a high-conductivity enhanced graphene product provided by Heizhou sixth-element material science and technology limited company, and the product model is as follows: SE1233, the performance parameters of graphene are: BET of 505m2The mass fraction of oxygen is 0.9 percent, and the mass fraction of D50 is 25 mu m;
the toughening agent is POE;
the antistatic agent is conductive carbon black;
the grafting agent is PP grafted maleic anhydride;
the antioxidant is as follows: an antioxidant 1010;
the uvioresistant agent is: UV 531;
the lubricant is: erucamide.
The preparation method of the graphene flame-retardant antistatic composite material for the bearing seat comprises the following steps: the preparation method is the same as that of the example 1.
The pellets were pelletized by twin screw extrusion and the resulting pellets were sampled to test performance.
Example 5
The graphene flame-retardant antistatic composite material for the bearing seat comprises the following raw material components in percentage by weight:
43% of mixed polypropylene, 17% of high-density polyethylene, 20% of alkali-free glass fiber, 6% of flame retardant, 5% of toughening agent, 0.3% of graphene, 1.7% of antistatic agent, 5% of grafting agent, 0.5% of antioxidant, 0.5% of anti-ultraviolet agent and 1% of lubricant.
Wherein, in the mixed polypropylene, the mass ratio of the conventional polypropylene to the stiffening polypropylene is 30: 5;
conventional polypropylene is a co-polypropylene with a molecular weight of 10 ten thousand. The copolymerized polypropylene is formed by copolymerizing propylene and ethylene, wherein the content of the propylene is 95 percent, and the content of the ethylene is 5 percent.
The reinforced polypropylene has the following specifications: injection molding grade reinforced polypropylene.
The high density polyethylene is a grade 100 polyethylene, having a molecular weight of 20 ten thousand.
The diameter of the alkali-free glass fiber is 13 micrometers;
the fire retardant is red phosphorus coated by microcapsules;
the graphene is a high-conductivity enhanced graphene product provided by Heizhou sixth-element material science and technology limited company, and the product model is as follows: SE1233, the performance parameters of graphene are: BET of 505m2The mass fraction of oxygen is 0.9 percent, and the mass fraction of D50 is 25 mu m;
the toughening agent is POE;
the antistatic agent is a carbon nano tube;
the grafting agent is PP grafted maleic anhydride;
the antioxidant is as follows: an antioxidant 1010;
the uvioresistant agent is: UV 531;
the lubricant is: erucamide.
The preparation method of the graphene flame-retardant antistatic composite material for the bearing seat comprises the following steps: the preparation method is the same as that of the example 1.
The pellets were pelletized by twin screw extrusion and the resulting pellets were sampled to test performance.
Example 6
The graphene flame-retardant antistatic composite material for the bearing seat comprises the following raw material components in percentage by weight:
40% of mixed polypropylene, 16% of high-density polyethylene, 25% of alkali-free glass fiber, 3% of flame retardant, 5% of toughening agent, 0.1% of graphene, 4% of antistatic agent, 5% of grafting agent, 0.2% of antioxidant, 0.3% of anti-ultraviolet agent and 1.4% of lubricant.
Wherein, in the mixed polypropylene, the mass ratio of the conventional polypropylene to the stiffening polypropylene is 25: 4;
conventional polypropylene is a co-polypropylene with a molecular weight of 10 ten thousand. The copolymerized polypropylene is formed by copolymerizing propylene and ethylene, wherein the content of the propylene is 95 percent, and the content of the ethylene is 5 percent.
The reinforced polypropylene has the following specifications: injection molding grade reinforced polypropylene.
The high density polyethylene is a grade 100 polyethylene, having a molecular weight of 20 ten thousand.
The diameter of the alkali-free glass fiber is 13 micrometers;
the fire retardant is red phosphorus coated by microcapsules;
the graphene is a high-conductivity enhanced graphene product provided by Heizhou sixth-element material science and technology limited company, and the product model is as follows: SE1233, the performance parameters of graphene are: BET of 505m2The mass fraction of oxygen is 0.9 percent, and the mass fraction of D50 is 25 mu m;
the toughening agent is SBS;
the antistatic agent is a carbon nano tube;
the grafting agent is PP grafted maleic anhydride;
the antioxidant is as follows: an antioxidant 1010;
the uvioresistant agent is: UV 531;
the lubricant is: erucamide.
The preparation method of the graphene flame-retardant antistatic composite material for the bearing seat comprises the following steps: the preparation method is the same as that of the example 1.
The pellets were pelletized by twin screw extrusion and the resulting pellets were sampled to test performance.
Example 7
The graphene flame-retardant antistatic composite material for the bearing seat comprises the following raw material components in percentage by weight:
42% of mixed polypropylene, 18% of high-density polyethylene, 25% of alkali-free glass fiber, 2% of flame retardant, 5% of toughening agent, 0.1% of graphene, 2% of antistatic agent, 5% of grafting agent, 0.2% of antioxidant, 0.3% of anti-ultraviolet agent and 1.4% of lubricant.
Wherein, in the mixed polypropylene, the mass ratio of the conventional polypropylene to the stiffening polypropylene is 25: 10;
conventional polypropylene is a co-polypropylene with a molecular weight of 10 ten thousand. The copolymerized polypropylene is formed by copolymerizing propylene and ethylene, wherein the content of the propylene is 95 percent, and the content of the ethylene is 5 percent.
The reinforced polypropylene has the following specifications: injection molding grade reinforced polypropylene.
The high density polyethylene is a grade 100 polyethylene, having a molecular weight of 20 ten thousand.
The diameter of the alkali-free glass fiber is 13 micrometers;
the flame retardant is red phosphorus;
the graphene is a high-conductivity enhanced graphene product provided by Heizhou sixth-element material science and technology limited company, and the product model is as follows: SE1233, the performance parameters of graphene are: BET of 505m2The mass fraction of oxygen is 0.9 percent, and the mass fraction of D50 is 25 mu m;
the toughening agent is POE;
the antistatic agent is a carbon nano tube;
the grafting agent is PP grafted maleic anhydride;
the antioxidant is as follows: an antioxidant 168;
the uvioresistant agent is: UV 531;
the lubricant is: erucamide.
The preparation method of the graphene flame-retardant antistatic composite material for the bearing seat comprises the following steps: the preparation method is the same as that of the example 1.
The pellets were pelletized by twin screw extrusion and the resulting pellets were sampled to test performance.
Example 8
The graphene flame-retardant antistatic composite material for the bearing seat comprises the following raw material components in percentage by weight:
50% of mixed polypropylene, 10% of high-density polyethylene, 15% of alkali-free glass fiber, 10% of flame retardant, 1% of toughening agent, 0.1% of graphene, 1.9% of antistatic agent, 10% of grafting agent, 0.4% of antioxidant, 0.3% of anti-ultraviolet agent and 1.3% of lubricant.
Wherein, in the mixed polypropylene, the mass ratio of the conventional polypropylene to the stiffening polypropylene is 28: 7;
conventional polypropylene is a co-polypropylene with a molecular weight of 10 ten thousand. The copolymerized polypropylene is formed by copolymerizing propylene and ethylene, wherein the content of the propylene is 95 percent, and the content of the ethylene is 5 percent.
The reinforced polypropylene has the following specifications: injection molding grade reinforced polypropylene.
The high density polyethylene is a grade 100 polyethylene, having a molecular weight of 20 ten thousand.
The diameter of the alkali-free glass fiber is 14 micrometers;
the flame retardant is red phosphorus;
the graphene is a high-conductivity enhanced graphene product provided by Heizhou sixth-element material science and technology limited company, and the product model is as follows: SE1233, the performance parameters of graphene are: BET of 505m2The mass fraction of oxygen is 0.9 percent, and the mass fraction of D50 is 25 mu m;
the toughening agent is POE;
the antistatic agent is acetylene black;
the grafting agent is PE grafted maleic anhydride;
the antioxidant is as follows: an antioxidant 168;
the uvioresistant agent is: UV 770;
the lubricant is: and (3) zinc stearate.
The preparation method of the graphene flame-retardant antistatic composite material for the bearing seat comprises the following steps: the preparation method is the same as that of the example 1.
The pellets were pelletized by twin screw extrusion and the resulting pellets were sampled to test performance.
Comparative example 1 (without graphene, compare with example 5)
The graphene flame-retardant antistatic composite material for the bearing seat comprises the following raw material components in percentage by weight:
43% of mixed polypropylene, 17% of high-density polyethylene, 20% of alkali-free glass fiber, 6% of flame retardant, 5% of toughening agent, 2% of antistatic agent, 5% of grafting agent, 0.5% of antioxidant, 0.5% of anti-ultraviolet agent and 1% of lubricant.
Wherein, in the mixed polypropylene, the mass ratio of the conventional polypropylene to the stiffening polypropylene is 25: 10;
conventional polypropylene is a co-polypropylene with a molecular weight of 10 ten thousand. The copolymerized polypropylene is formed by copolymerizing propylene and ethylene, wherein the content of the propylene is 95 percent, and the content of the ethylene is 5 percent.
The reinforced polypropylene has the following specifications: injection molding grade reinforced polypropylene.
The high density polyethylene is a grade 100 polyethylene, having a molecular weight of 20 ten thousand.
The diameter of the alkali-free glass fiber is 13 micrometers;
the fire retardant is red phosphorus coated by microcapsules;
the toughening agent is POE;
the antistatic agent is conductive carbon black;
the grafting agent is: grafting PP with maleic anhydride;
the antioxidant is as follows: an antioxidant 1010;
the uvioresistant agent is: UV 531;
the lubricant is: erucamide.
The preparation method of the graphene flame-retardant antistatic composite material for the bearing seat in the comparative example comprises the following steps: the preparation method is the same as that of the example 1.
The pellets were pelletized by twin screw extrusion and the resulting pellets were sampled to test performance.
Comparative example 2 (without toughening agent)
The graphene flame-retardant antistatic composite material for the bearing seat comprises the following raw material components in percentage by weight:
45% of mixed polypropylene, 20% of high-density polyethylene, 20% of alkali-free glass fiber, 6% of flame retardant, 0.3% of graphene, 1.7% of antistatic agent, 5% of grafting agent, 0.4% of antioxidant, 0.3% of anti-ultraviolet agent and 1.3% of lubricant.
Wherein, in the mixed polypropylene, the mass ratio of the conventional polypropylene to the stiffening polypropylene is 30: 5;
conventional polypropylene is a co-polypropylene with a molecular weight of 10 ten thousand. The copolymerized polypropylene is formed by copolymerizing propylene and ethylene, wherein the content of the propylene is 95 percent, and the content of the ethylene is 5 percent.
The reinforced polypropylene has the following specifications: injection molding grade reinforced polypropylene.
The high density polyethylene is a grade 100 polyethylene, having a molecular weight of 20 ten thousand.
The diameter of the alkali-free glass fiber is 13 micrometers;
the fire retardant is red phosphorus coated by microcapsules;
the graphene is a high-conductivity enhanced graphene product provided by Heizhou sixth-element material science and technology limited company, and the product model is as follows: SE1233, the performance parameters of graphene are: BET of 505m2The mass fraction of oxygen is 0.9 percent, and the mass fraction of D50 is 25 mu m;
the antistatic agent is conductive carbon black;
the grafting agent is: grafting PP with maleic anhydride;
the antioxidant is as follows: an antioxidant 1010;
the uvioresistant agent is: UV 531;
the lubricant is: erucamide.
The preparation method of the graphene flame-retardant antistatic composite material for the bearing seat in the comparative example comprises the following steps: the preparation method is the same as that of the example 1.
The pellets were pelletized by twin screw extrusion and the resulting pellets were sampled to test performance.
Comparative example 3 (graphene from other manufacturers, compare with example 5)
The graphene flame-retardant antistatic composite material for the bearing seat comprises the following raw material components in percentage by weight:
43% of mixed polypropylene, 17% of high-density polyethylene, 20% of alkali-free glass fiber, 6% of flame retardant, 5% of toughening agent, 0.3% of graphene, 1.7% of antistatic agent, 5% of grafting agent, 0.5% of antioxidant, 0.5% of anti-ultraviolet agent and 1% of lubricant.
Wherein in the mixed polypropylene, the mass ratio of the conventional polypropylene to the rigidity-enhanced polypropylene is 30: 5;
conventional polypropylene is a co-polypropylene with a molecular weight of 10 ten thousand. The copolymerized polypropylene is formed by copolymerizing propylene and ethylene, wherein the content of the propylene is 95 percent, and the content of the ethylene is 5 percent.
The reinforced polypropylene has the following specifications: injection molding grade reinforced polypropylene.
The high density polyethylene is a grade 100 polyethylene, having a molecular weight of 20 ten thousand.
The diameter of the alkali-free glass fiber is 13 micrometers;
the fire retardant is red phosphorus coated by microcapsules;
the graphene is provided by Xiancheng nanometer company, the product model is conductive graphene, and the performance parameters of the graphene are as follows: BET of 505m2The mass fraction of oxygen is 0.9 percent, and the mass fraction of D50 is 25 mu m;
the toughening agent is POE;
the antistatic agent is a carbon nano tube;
the grafting agent is: grafting PP with maleic anhydride;
the antioxidant is as follows: an antioxidant 1010;
the uvioresistant agent is: UV 531;
the lubricant is: erucamide.
The preparation method of the graphene flame-retardant antistatic composite material for the bearing seat comprises the following steps: the preparation method is the same as that of the example 1.
The pellets were pelletized by twin screw extrusion and the resulting pellets were sampled to test performance.
Comparative example 4
This comparative example differs from example 2 in that: the graphene is not contained, and the rest of the formula and the preparation method are the same as those of the example 2.
Comparative example 5
This comparative example differs from example 3 in that: the graphene is not contained, and the rest of the formula and the preparation method are the same as those of the example 2.
Comparative example 6
This comparative example differs from example 7 in that: the graphene is not contained, and the rest of the formula and the preparation method are the same as those of the example 2.
Comparative example 7
This comparative example differs from example 8 in that: the graphene is not contained, and the rest of the formula and the preparation method are the same as those of the example 2.
The performance of the idler chocks prepared in examples 1-8 and comparative examples 1-7 were tested using the following test methods:
tensile strength: GB/T1040.1-2006.
Bending strength: GB/T9341-2008.
Flexural modulus: GB/T9341-2008.
Flame retardant property: the test was carried out using GB/T2408-1996, according to which the rating of vertical burn was judged. Surface resistivity: GB/T1410-2006.
Notched impact strength: GB/T21189-2007.
Hardness: GB/T2411-2008.
Density: GB/T1033.1-2008.
Shrinkage rate: GB/T15585-1995.
The results are shown in Table 1 (the values in Table 1 are the average values obtained by testing three samples of the same batch).
TABLE 1 test results for Performance of examples and comparative examples
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a flame-retardant antistatic combined material of graphite alkene for bearing frame which characterized in that: the composite material is prepared from the following raw materials in percentage by weight:
the mixed polypropylene is formed by mixing conventional polypropylene and reinforced polypropylene, and the weight ratio of the conventional polypropylene to the reinforced polypropylene is (25-35): (1-10).
2. The graphene flame-retardant antistatic composite material for the bearing seat according to claim 1, characterized in that: the flame retardant is one or more of red phosphorus, magnesium hydroxide and aluminum hydroxide which are coated by microcapsules; and/or
The weight percentage content of the flame retardant is 1-10%.
3. The graphene flame-retardant antistatic composite material for the bearing seat as claimed in claim 2, wherein: the flame retardant is red phosphorus coated by microcapsules; the weight percentage content of the red phosphorus coated by the microcapsule is 1-6%.
4. The graphene flame-retardant antistatic composite material for the bearing seat according to any one of claims 1 to 3, wherein: the antistatic agent is one or more of graphite, carbon nano tubes, acetylene black and conductive carbon black; and/or
The weight percentage content of the antistatic agent is 0.5-2.5%.
5. The graphene flame-retardant antistatic composite material for the bearing seat according to any one of claims 1 to 3, wherein: the conventional polypropylene is copolymerized polypropylene, and the molecular weight is 8-15 ten thousand; the copolymerized polypropylene is formed by copolymerizing propylene and ethylene, wherein the content of the propylene is 95 percent, and the content of the ethylene is 5 percent; and/or
The high density polyethylene is 100 grade polyethylene, and the molecular weight is 4-30 ten thousand.
6. The graphene flame-retardant antistatic composite material for the bearing seat according to any one of claims 1 to 3, wherein: the diameter of the alkali-free glass fiber ranges from 8 to 14 micrometers.
7. The graphene flame-retardant antistatic composite material for the bearing seat according to any one of claims 1 to 3, wherein:
the toughening agent is one or more of POE, SBS and SEBS; and/or
The grafting agent is one or more of PP grafted maleic anhydride and PE grafted maleic anhydride; and/or
The antioxidant is one or more of antioxidant 1010 and antioxidant 168; and/or
The anti-ultraviolet agent is one or more of UV531 and UV 770; and/or
The lubricant is one or more of erucamide, zinc stearate and calcium stearate.
8. The graphene flame-retardant antistatic composite material for the bearing seat according to claim 1, characterized in that: the composite material is prepared from the following raw materials in percentage by weight: 43% of mixed polypropylene, 17% of high-density polyethylene, 20% of alkali-free glass fiber, 6% of flame retardant, 5% of toughening agent, 0.3% of graphene, 1.7% of antistatic agent, 5% of grafting agent, 0.5% of antioxidant, 0.5% of anti-ultraviolet agent and 1% of lubricant;
wherein, in the mixed polypropylene, the mass ratio of the conventional polypropylene to the stiffening polypropylene is 30: 5;
the conventional polypropylene is copolymerized polypropylene, and the molecular weight is 10 ten thousand; the copolymerized polypropylene is copolymerized by propylene and ethylene, wherein the content of the propylene is 95 percent, and the content of the ethylene is 5 percent;
the reinforced polypropylene has the following specifications: injection molding grade reinforced polypropylene;
the high-density polyethylene is 100-grade polyethylene and has a molecular weight of 20 ten thousand;
the diameter of the alkali-free glass fiber is 13 micrometers;
the flame retardant is red phosphorus coated by microcapsules;
the graphene is a high-conductivity enhanced graphene product provided by Heizhou sixth-element material science and technology limited company, and the product model is as follows: SE1233, the performance parameters of graphene are: BET of 505m2The mass fraction of oxygen is 0.9 percent, and the mass fraction of D50 is 25 mu m;
the toughening agent is POE;
the antistatic agent is a carbon nano tube;
the grafting agent is PP grafted maleic anhydride;
the antioxidant is as follows: an antioxidant 1010;
the anti-ultraviolet agent is: UV 531;
the lubricant is: erucamide.
9. The method for preparing the graphene flame-retardant antistatic composite material for the bearing seat as claimed in any one of claims 1 to 8, wherein the graphene flame-retardant antistatic composite material comprises the following steps: the preparation method comprises the following steps: mixing and stirring the mixed polypropylene and the high-density polyethylene according to the formula amount, mixing and stirring the graphene, the flame retardant, the antistatic agent, the toughening agent, the grafting agent, the antioxidant, the uvioresistant agent and the lubricant, simultaneously adding the two uniformly stirred mixtures into a double-screw extruder for extrusion, and simultaneously adding the alkali-free glass fiber according to the formula amount into a fiber adding port of the double-screw extruder to obtain the graphene flame-retardant antistatic composite material for the bearing block.
10. The preparation method of the graphene flame-retardant antistatic composite material for the bearing seat according to claim 9, characterized in that: the parameters of the twin-screw extrusion are set as follows: the temperatures from the first section to the tenth section are respectively 165-.
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| CN113480794A (en) * | 2021-07-29 | 2021-10-08 | 常州第六元素材料科技股份有限公司 | Graphene modified flame-retardant composite material for carrier roller and preparation method thereof |
| CN115449154A (en) * | 2021-06-09 | 2022-12-09 | 国家能源投资集团有限责任公司 | Long-fiber-reinforced flame-retardant antistatic polypropylene composition, long-fiber-reinforced flame-retardant antistatic polypropylene material, and preparation method and application thereof |
| CN115678264A (en) * | 2022-11-29 | 2023-02-03 | 沧州旭阳化工有限公司 | Antistatic flame-retardant composite material and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115449154A (en) * | 2021-06-09 | 2022-12-09 | 国家能源投资集团有限责任公司 | Long-fiber-reinforced flame-retardant antistatic polypropylene composition, long-fiber-reinforced flame-retardant antistatic polypropylene material, and preparation method and application thereof |
| CN113480794A (en) * | 2021-07-29 | 2021-10-08 | 常州第六元素材料科技股份有限公司 | Graphene modified flame-retardant composite material for carrier roller and preparation method thereof |
| CN115678264A (en) * | 2022-11-29 | 2023-02-03 | 沧州旭阳化工有限公司 | Antistatic flame-retardant composite material and preparation method and application thereof |
| CN115678264B (en) * | 2022-11-29 | 2024-04-19 | 沧州旭阳化工有限公司 | Antistatic flame-retardant composite material and preparation method and application thereof |
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Application publication date: 20210420 |