CN114656780A - Halogen-free flame-retardant mildew-proof nylon material and preparation method and application thereof - Google Patents
Halogen-free flame-retardant mildew-proof nylon material and preparation method and application thereof Download PDFInfo
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- CN114656780A CN114656780A CN202210244324.4A CN202210244324A CN114656780A CN 114656780 A CN114656780 A CN 114656780A CN 202210244324 A CN202210244324 A CN 202210244324A CN 114656780 A CN114656780 A CN 114656780A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/06—Polyamides derived from polyamines and polycarboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/22—Halogen free composition
Abstract
The application discloses a halogen-free flame-retardant mildew-proof nylon material, and a preparation method and application thereof. The halogen-free flame-retardant mildew-proof nylon material comprises nylon matrix resin, a mildew preventive, a flame retardant and an auxiliary agent which can be used or not used, wherein the mildew preventive is ZIF-8. The application provides a halogen-free flame-retardant mould-proof nylon material's fire behaviour is high, and mechanical properties is good, and mould resistance can be excellent, makes labour stability strong, and processing is simple moreover, only need extrude through the melting and can obtain, can fully satisfy fire-retardant, the mould proof demand in fields such as electron electricity, high-end household electrical appliances.
Description
Technical Field
The application relates to a nylon material, in particular to a halogen-free flame-retardant mildew-proof nylon material, a preparation method and application thereof, for example, application in preparation of a multilayer mildew-proof flame-retardant structure, and belongs to the field of functional materials.
Background
Nylon (polyamide, PA) is used as an engineering plastic, and is widely used in the fields of automobiles, electronics and electrical and the like because of its characteristics of high mechanical properties, excellent high and low temperature resistance, good chemical resistance, easy molding and the like. However, nylon generates a large amount of flaming molten drops in the combustion process, which easily causes secondary combustion, so that the nylon material needs to be subjected to flame retardant modification in use.
Currently, flame retardant nylon is generally prepared by adding a brominated flame retardant into a nylon material. Common brominated flame retardants such as antimony bromide composite flame retardant polyamide have excellent flame retardant performance, and simultaneously maintain good processability and mechanical properties, but have the defects of generating a large amount of smoke dust, corrosive harmful gases and the like during combustion, so that the application of the brominated flame retardants is limited. Particularly, with the issue of related ROHS and WEEE directives in the european union, non-halogenated flame retardancy is a future development trend. In the halogen-free flame retardant, the comprehensive performance of the phosphorus-nitrogen system halogen-free flame retardant can be comparable to that of the traditional bromine-antimony flame retardant, but the comprehensive performance is limited by the high price, and the phosphorus-nitrogen system halogen-free flame retardant cannot be popularized and used in a large area at present.
Melamine Cyanurate (MCA) is used as a halogen-free flame retardant with high nitrogen content, has the advantages of high decomposition temperature, low smoke, no toxicity, low price and the like, and has become the first choice of the current halogen-free flame retardant. However, MCA as a filled flame retardant has poor compatibility with nylon, and if added in a large proportion, the mechanical properties of the nylon material are easily reduced. Meanwhile, in the long-term service process of the nylon material, particularly in a high-temperature and high-humidity environment, MCA is extremely easy to migrate to the surface of the nylon material, so that the mechanical property of the nylon product is further reduced. Meanwhile, due to the nitrogen-rich characteristic, the nylon material is easy to mildew under the high-temperature and high-humidity environment, and the service performance of the nylon product is also seriously influenced.
Disclosure of Invention
The application mainly aims to provide a halogen-free flame-retardant mildew-proof nylon material, a preparation method and application thereof, so as to overcome the defects in the prior art.
In order to achieve the above purpose, the present application adopts a technical solution comprising:
one aspect of the application provides a halogen-free flame-retardant mildew-proof nylon material, which comprises nylon matrix resin, a mildew preventive, a flame retardant and an auxiliary agent which can be used or not used selectively, wherein the mildew preventive is ZIF-8.
Another aspect of the present application also provides a method for preparing the halogen-free flame retardant mildewproof nylon material, which comprises: uniformly mixing nylon matrix resin, mildew preventive, flame retardant and optional auxiliary agent, and heating to 230-270 ℃ for melt extrusion.
The application further provides application of the halogen-free flame-retardant mildew-proof nylon material in preparation of nylon products with mildew-proof and flame-retardant functions.
In yet another aspect of the application, the application of the halogen-free flame-retardant mildew-proof nylon material in the preparation of electronic and electrical equipment, high-end household electrical appliances and the like is also provided.
Compared with the prior art, the method has the advantages that:
(1) the halogen-free flame-retardant mildew-proof nylon material has excellent mildew-proof and flame-retardant properties. The added mildew inhibitor ZIF-8 has excellent mildew resistance, has good compatibility with nylon resin, can be uniformly dispersed in the nylon resin and has good stability, and meanwhile, the ZIF-8 has a porous structure characteristic and can be used in a synergistic manner with a flame retardant, so that the flame retardant property of the nylon material is effectively improved under the condition of reducing the addition amount of the flame retardant, the mechanical property of the nylon material is improved, the precipitation of the flame retardant in a high-temperature and high-humidity environment can be reduced, the probability of inducing the mildew of the nylon material is remarkably reduced, and the service stability of the nylon material is greatly improved.
(2) The halogen-free flame-retardant mildew-proof nylon material is simple in processing technology, can be obtained only by melt extrusion, can also have good long-acting flame-retardant and mildew-proof performances, and is suitable for flame-retardant and mildew-proof requirements in the fields of electronics, electrics and high-end household appliances.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is an XRD pattern of various ZIF-8 used in examples 1-4;
FIGS. 2 a-2 b are photographs of the mildew-proof performance test specimen of the halogen-free flame-retardant mildew-proof nylon material sample of example 1 for Aspergillus niger and Penicillium funiculosum, respectively;
FIGS. 3 a-3 b are photographs of the mildew-proof performance test specimen of the halogen-free flame-retardant mildew-proof nylon material sample of example 2 for Aspergillus niger and Penicillium funiculosum, respectively;
FIGS. 4 a-4 b are photographs of the mildew-proof performance test specimen of the halogen-free flame-retardant mildew-proof nylon material sample of example 3 for Aspergillus niger and Penicillium funiculosum, respectively;
FIGS. 5 a-5 b are photographs of the mildew-proof performance test specimen of the halogen-free flame-retardant mildew-proof nylon material sample of example 4 for Aspergillus niger and Penicillium funiculosum, respectively;
FIGS. 6a to 6b are photographs of the mildew-proof performance test specimen of the halogen-free flame-retardant mildew-proof nylon material sample of comparative example 1 with respect to Aspergillus niger and Penicillium funiculosum, respectively;
FIGS. 7a to 7b are photographs of the mildew-proof performance test specimen of the halogen-free flame-retardant mildew-proof nylon material sample in comparative example 2 with respect to Aspergillus niger and Penicillium funiculosum, respectively.
Detailed Description
In view of the defects of the prior art, the inventor of the present application has made extensive research and practice to propose the technical solution of the present application. The technical solution, its implementation and principles, etc. will be further explained as follows. It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. 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.
One embodiment of the application provides a use of ZIF-8 in preparing a halogen-free flame retardant mildew-proof nylon material. Wherein ZIF-8 is a metal-organic frameworks (MOFs), and has a molecular formula of C8H12N4Zn。
One embodiment of the application provides a halogen-free flame-retardant mildew-proof nylon material, which comprises nylon matrix resin, a mildew preventive, a flame retardant and an auxiliary agent which can be used or not used selectively, wherein the mildew preventive is ZIF-8.
In some embodiments, the content of the mildew preventive in the halogen-free flame-retardant mildew-proof nylon material is less than 5 wt%, and preferably 0.5 wt% to 3 wt%. If the addition amount of the mildew preventive is too low, the mildew preventive effect is weak, the enhancement effect on the flame retardant performance is small, otherwise, if the addition amount is too high, the cost is increased, and the comprehensive mechanical property of the nylon material is possibly negatively affected.
In some embodiments, the ZIF-8 is prepared by mixing a methanolic solution of a zinc salt with a methanolic solution of 2-methylimidazole. Wherein the zinc salt is Zn (NO)3)2·6H2O, etc., and is not limited thereto.
In some embodiments, the content of the flame retardant in the halogen-free flame-retardant mildew-proof nylon material is less than 15 wt%, preferably 10 wt% to 15 wt%, and in this case, a relatively ideal flame-retardant effect can be obtained, and the comprehensive mechanical properties of the nylon material are also more excellent.
In some embodiments, the flame retardant comprises melamine cyanurate, and is not limited thereto.
In some embodiments, the adjuvant includes any one or combination of antioxidants, lubricants, and is not limited thereto.
In some embodiments, the halogen-free flame retardant mildewproof nylon material comprises a nylon base resin, a mildewproof agent, a flame retardant, an antioxidant, a lubricant and the like.
The mildew preventive ZIF-8 adopted in the application is an organic-inorganic composite metal framework material, and is mainly formed by the reaction of imidazole derivatives with good mildew preventive effect and metal zinc ions, so that the defects of the imidazole derivatives and the metal zinc ions can be avoided, the advantages of the imidazole and the derivatives thereof and the metal-based mildew preventive can be fully exerted, and the synergistic effect of the imidazole derivatives and the metal-based mildew preventive produces enhanced mildew preventive effect. Meanwhile, as the ZIF-8 belongs to an organic-inorganic composite compound, the ZIF-8 has good compatibility with nylon resin and can well realize uniform dispersion in nylon matrix resin. In addition, on one hand, the self porous structure of the ZIF-8 can greatly improve the heat resistance of the halogen-free flame-retardant mildew-proof nylon material and reduce the molten drop phenomenon of the nylon material in the combustion process, on the other hand, the ZIF-8 can adsorb combustible gas generated by the decomposition of plastics and oxygen in the air, and the ZIF-8 can also catalyze the complete oxidation of the decomposition products of the plastics into carbon dioxide, thereby effectively reducing the concentration of smoke and toxic gas in the combustion tail gas of the plastics, playing the function of a flame retardant synergist, obviously improving the flame retardant effect of the halogen-free flame-retardant mildew-proof nylon material under the condition of effectively reducing the addition amount of the halogen-free flame retardant, further greatly reducing the precipitation amount of nitrogen-rich flame retardants such as MCA and the like in a high-humidity high-temperature environment, inhibiting the growth of mildew, reducing the probability of inducing the mildew of the nylon material and improving the service stability of the nylon material, endowing the halogen-free flame-retardant mildew-proof nylon material with good flame-retardant synergy and mildew-proof effects in the use environment.
The halogen-free flame-retardant mildew-proof nylon material provided by the embodiment of the application has a mildew-proof grade superior to grade 1 on typical mildew such as aspergillus niger (a. niger) and penicillium funiculosum (p.funiculosum). And compared with the halogen-free flame-retardant nylon material without the ZIF-8, the comprehensive mechanical properties (including the breaking strength) of the halogen-free flame-retardant mildew-proof nylon material are improved by at least 10-20%.
One embodiment of the application also provides a halogen-free flame-retardant mildew-proof nylon material, which is prepared by adding a mildew-proof agent, a flame retardant and optionally added auxiliary agents into nylon matrix resin and performing melt blending. The mildew preventive is ZIF-8, and the addition amount of the mildew preventive is less than 5% of the mass of the halogen-free flame-retardant mildew-proof nylon material, and is preferably 0.5-3 wt%.
An embodiment of the present application also provides a method for preparing the halogen-free flame retardant mildew-proof nylon material, comprising: uniformly mixing nylon matrix resin, mildew preventive, flame retardant and optional auxiliary agent, and heating to 230-270 ℃ for melt extrusion.
In some embodiments, the preparation method specifically comprises:
uniformly mixing nylon matrix resin, a mildew inhibitor, a flame retardant and an auxiliary agent to form a mixture;
heating the mixture to a selected temperature, carrying out melt extrusion, carrying out screw extrusion granulation, and carrying out injection molding or blow molding on the obtained halogen-free flame-retardant mildew-proof nylon master batch to obtain the halogen-free flame-retardant mildew-proof nylon material. Wherein the selected temperature is 230-270 ℃.
The mildew inhibitor ZIF-8 used in the application has a porous structure as a metal organic framework material, so that the specific surface area is extremely high (1500 m)2More than g), and has good high-temperature stability (decomposition temperature is not lower than 400 ℃), and the flame retardant and mildew-proof material can be uniformly distributed in a melt when being melted and blended with a nylon material, has good compatibility with the nylon material and high stability, and can greatly improve the heat resistance of the halogen-free flame retardant and mildew-proof nylon material due to the porous structure of the flame retardant and mildew-proof material, adsorb combustible gas generated by plastic decomposition and oxygen in the air, and is favorable for improving the flame retardant property of the halogen-free flame retardant and mildew-proof nylon material. The applicant also unexpectedly finds that when ZIF-8 is compounded with the nylon matrix resin, the flame retardant and the auxiliary agent in an adding amount of less than 5 wt%, the formed halogen-free flame-retardant mildew-proof nylon material not only has excellent mildew resistance, for example, the mildew resistance level of aspergillus niger (a. niger), penicillium funiculosum (p. funiculosum) and the like is superior to level 1, but also has an excellent flame retardant synergist function, is beneficial to remarkably reducing the adding amount of the flame retardant, simultaneously improves the flame resistance of the halogen-free flame-retardant mildew-proof nylon material, can also reduce the precipitation amount of the flame retardant from the halogen-free flame-retardant mildew-proof nylon material in a high-temperature and high-humidity environment, further improves the mildew-proof effect, and can also effectively improve the mechanical mildew-proof effect of the halogen-free flame-retardant mildew-proof nylon materialThe strength of the material improves the comprehensive mechanical property by more than 10 to 20 percent.
In some embodiments, the method of preparing the mold inhibitor comprises:
dissolving a Zn source in methanol to form a first solution, wherein the molar ratio of the Zn source to the methanol is 1: 100-300, and the Zn source comprises zinc salt;
dissolving 2-methylimidazole in methanol to form a second solution, wherein the molar ratio of 2-methylimidazole to methanol is 4: 100-300;
and rapidly mixing the first solution and the second solution, and stirring and reacting at room temperature to obtain the mildew preventive. The stirring mode can be magnetic rotor stirring or other common stirring modes, and the stirring speed is preferably over 1000 rpm.
Further, the reaction time is preferably controlled within 5-360 min.
Further, the Zn source may be selected from soluble zinc salts, such as Zn (NO)3)2·6H2O, etc., and is not limited thereto.
Further, the preparation method of the mildew preventive can also comprise some post-treatment steps, for example, after the reaction is finished, the obtained reaction mixture can be centrifuged at about 9000r/min, and the centrifuged precipitate is washed for about 3 times by methanol to obtain a white solid, namely the mildew preventive.
The halogen-free flame-retardant mildew-proof nylon material provided by the embodiment of the application is simple to process, the required nylon product can be obtained only by performing a melt extrusion granulation process and then processing by using conventional processing modes such as injection molding or blow molding, and the like, and the good long-acting flame-retardant and mildew-proof performances of the material in a use environment are endowed.
One embodiment of the application also provides application of the halogen-free flame-retardant mildew-proof nylon material in preparation of a nylon product with mildew-proof and flame-retardant functions. The nylon product has a mildew resistance grade superior to grade 1 against molds, including aspergillus niger (a. niger), penicillium funiculosum (p.funiculosum), and the like.
The nylon product may be in various forms such as a bottle, a can, a tube, a rod, a film, etc., but is not limited thereto.
Furthermore, the nylon products can be applied to the fields of electronics and electrical, high-end household appliances and the like, and fully meet the requirements of mildew resistance and flame retardance in the fields.
One embodiment of the application provides application of the halogen-free flame-retardant mildew-proof nylon material in preparation of electronic and electric high-end household appliances.
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application are described in further detail below with reference to several preferred embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Unless otherwise indicated, reagents and starting materials used in the following examples are commercially available, and test methods in which specific conditions are not specified are generally in accordance with conventional conditions, or conditions recommended by the respective manufacturers. In addition, unless otherwise indicated, the experimental methods, detection methods, and preparation methods disclosed herein are all conventional in the art. These techniques are well described in the literature.
For example, in the following examples, the raw materials for producing the mildewcide, nylon resin, processing aid, and the like are commercially available.
The mildew preventive ZIF-8 used in the following examples can be prepared by a method comprising:
adding Zn (NO)3)2·6H2O is dissolved in methanol to form a first solution in which Zn (NO) is present3)2·6H2The molar ratio of O to methanol is 1: 100-300;
2-methylimidazole (C)4H6N2) Dissolving in methanol to form a second solution, wherein 2-methylimidazole (C)4H6N2) The mol ratio of the methanol to the methanol is 4: 100-300;
and (3) rapidly mixing the first solution and the second solution in equal volume, carrying out strong stirring reaction at room temperature (the stirring speed is more than 1000 r/min), wherein the reaction time is 5-360 min, centrifuging the formed latex solution at 9000r/min after the reaction is finished, and washing the centrifuged precipitate for 3 times by using methanol to obtain a white solid, namely the mildew preventive. Wherein, XRD patterns of some ZIF-8 samples prepared by adopting different reaction times are shown in figure 1.
In the following examples and comparative examples, the halogen-free flame-retardant mildew-proof nylon material can be prepared by the same production equipment and process as the existing nylon material. For example, the above-mentioned mildewcide, nylon base resin, flame retardant (MCA) and other auxiliary agents added according to the requirements of the service environment on the material performance are added at one time or sequentially, stirred and mixed, and then melt extruded for granulation, and then various required halogen-free flame-retardant mildewproof nylon products are prepared by conventional preparation methods such as injection molding and blow molding. Wherein the temperature of the melt extrusion can be controlled to be 230-270 ℃.
In the following examples, for the rating standard of the mildew resistance of each halogen-free flame-retardant mildew-proof nylon material sample, referring to table 1, the relevant test method refers to the mildew resistance evaluation and determination of the GB/T24128-2018 plastic mildew inhibitor. The compositions and processing parameters of the halogen-free flame-retardant mildewproof nylon materials in examples 1 to 10 and comparative examples 1 to 2 are shown in table 2, and the mildewproof performance, the mechanical performance and the precipitation amount of the flame retardant are shown in table 3.
TABLE 1 rating standards for mildew resistance
TABLE 2 compositions and processing parameters of halogen-free flame-retardant mildewproof nylon materials in examples 1-4 and comparative examples 1-2
TABLE 3 mildew-proof, flame-retardant and mechanical properties of each of the halogen-free flame-retardant mildew-proof nylon materials of examples 1-4 and comparative examples 1-2
Note: each performance data in table 3 is an average of the results obtained after testing a number of samples.
The photographs of the mold-proofing performance test specimens of each of the typical samples of examples 1 to 4 are shown in fig. 2a to 2b, fig. 3a to 3b, fig. 4a to 4b, and fig. 5a to 5b, respectively. The photographs of the mold-proofing performance test pieces of the typical samples of comparative examples 1 to 2 are shown in fig. 6a to 6b and fig. 7a to 7b, respectively.
Comparative example 3: the composition and preparation method of the halogen-free flame-retardant mildew-proof nylon material provided by the comparative example are basically the same as those of the embodiment 1, and the differences are that: the same dosage of silicon-aluminum type molecular sieve (the grain diameter is about 10-15 mu m) is adopted to replace ZIF-8. The results of tests on various performances of the halogen-free flame-retardant mildew-proof nylon material show that the mildew-proof grade is about 2 grade, the bending strength is about 105MPa, the tensile strength is about 61MPa, and the flame-retardant grade (vertical burning UL94) is V-0 grade.
Comparative example 4: the composition and preparation method of the halogen-free flame-retardant mildew-proof nylon material provided by the comparative example are basically the same as those of the embodiment 1, and the differences are that: the same amount of MIL-100(Fe) was used instead of ZIF-8. The results of tests on various performances of the halogen-free flame-retardant mildew-proof nylon material show that the mildew-proof grade is about 1 grade, the bending strength is about 104MPa, the tensile strength is about 65MPa, and the flame-retardant grade (vertical burning UL94) is V-1 grade.
The halogen-free flame-retardant mildew-proof nylon material provided by the embodiment of the application can be applied to the production fields of packaging materials, automobile parts, household appliance parts and the like.
In addition, the inventors of the present invention have also made experiments with other materials, process operations, and process conditions described in the present specification with reference to the above examples, and have obtained preferable results.
Although the present application has been described with reference to illustrative embodiments, it will be understood by those skilled in the art that various other changes, omissions and/or additions may be made and substantial equivalents may be substituted for elements thereof without departing from the spirit and scope of the application. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the application without departing from the scope thereof. Therefore, it is intended that the present application not be limited to the particular embodiments disclosed for carrying out the present application, but that the present application will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. A halogen-free flame-retardant mildew-proof nylon material comprises nylon matrix resin, a mildew preventive, a flame retardant and an auxiliary agent which can be used or not used, and is characterized in that: the mildew preventive is ZIF-8, and the content of ZIF-8 in the halogen-free flame-retardant mildew-proof nylon material is less than 5 wt%.
2. The halogen-free flame retardant mildewproof nylon material as claimed in claim 1, wherein: the content of the flame retardant in the halogen-free flame-retardant mildew-proof nylon material is below 15 wt%.
3. The halogen-free flame retardant mildewproof nylon material as claimed in claim 1, wherein: the flame retardant comprises melamine cyanurate.
4. The halogen-free flame retardant mildewproof nylon material of claim 1, wherein the ZIF-8 is prepared by mixing and reacting a methanol solution of zinc salt with a methanol solution of 2-methylimidazole.
5. The halogen-free flame retardant mildewproof nylon material as claimed in claim 1, wherein: the auxiliary agent comprises any one or combination of more of an antioxidant and a lubricant.
6. The preparation method of the halogen-free flame retardant mildew-proof nylon material according to any one of claims 1-5, which comprises the following steps: uniformly mixing nylon matrix resin, mildew preventive, flame retardant and optional auxiliary agent, and heating to 230-270 ℃ for melt extrusion.
7. The method for preparing the mildewcide according to claim 6, wherein the method for preparing the mildewcide comprises:
dissolving a Zn source in methanol to form a first solution, wherein the molar ratio of the Zn source to the methanol is 1: 100-300, and the Zn source comprises zinc salt;
dissolving 2-methylimidazole in methanol to form a second solution, wherein the molar ratio of 2-methylimidazole to methanol is 4: 100-300;
and (3) quickly mixing the first solution and the second solution in a volume ratio of 1: 1, and stirring at room temperature at a speed of not less than 1000 revolutions per minute for reaction to prepare the mildew preventive.
8. Use of the halogen-free flame-retardant mildew-proof nylon material as defined in any one of claims 1-5 in the preparation of nylon articles with mildew-proof and flame-retardant functions.
9. Use according to claim 8, characterized in that: the nylon product has a mildew-proof grade superior to grade 1 for moulds including aspergillus niger and penicillium funiculosum.
10. Use of the halogen-free flame-retardant mildew-resistant nylon material of any one of claims 1-5 in the preparation of electronic and electrical equipment.
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| CN110157085A (en) * | 2019-05-16 | 2019-08-23 | 广州大学 | A kind of antibiotic plastic and preparation method thereof using ZIF-8 |
| CN111363348A (en) * | 2020-03-25 | 2020-07-03 | 上海金发科技发展有限公司 | Halogen-free flame-retardant polyamide compound with biological mildew-resistant function and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110157085A (en) * | 2019-05-16 | 2019-08-23 | 广州大学 | A kind of antibiotic plastic and preparation method thereof using ZIF-8 |
| CN111363348A (en) * | 2020-03-25 | 2020-07-03 | 上海金发科技发展有限公司 | Halogen-free flame-retardant polyamide compound with biological mildew-resistant function and application thereof |
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