CN114920988B - Phenolphthalein-based flame retardant char forming agent composition, preparation method thereof and application thereof in nylon 66 - Google Patents
Phenolphthalein-based flame retardant char forming agent composition, preparation method thereof and application thereof in nylon 66 Download PDFInfo
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- CN114920988B CN114920988B CN202210518110.1A CN202210518110A CN114920988B CN 114920988 B CN114920988 B CN 114920988B CN 202210518110 A CN202210518110 A CN 202210518110A CN 114920988 B CN114920988 B CN 114920988B
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- KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 229920002302 Nylon 6,6 Polymers 0.000 title claims abstract description 51
- 239000000203 mixture Substances 0.000 title claims abstract description 38
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 20
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims description 48
- 239000003063 flame retardant Substances 0.000 title claims description 47
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 239000002131 composite material Substances 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 20
- 229920005989 resin Polymers 0.000 claims abstract description 17
- 239000011347 resin Substances 0.000 claims abstract description 17
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 14
- -1 methyl butyl Chemical group 0.000 claims abstract description 14
- ACVYVLVWPXVTIT-UHFFFAOYSA-M phosphinate Chemical compound [O-][PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-M 0.000 claims abstract description 14
- 239000004677 Nylon Substances 0.000 claims abstract description 10
- 229920001778 nylon Polymers 0.000 claims abstract description 10
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims abstract description 8
- 238000001746 injection moulding Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 238000000465 moulding Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- 239000008187 granular material Substances 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 238000001354 calcination Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 14
- 229910052799 carbon Inorganic materials 0.000 abstract description 10
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000002861 polymer material Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 13
- 239000011159 matrix material Substances 0.000 description 8
- 238000005979 thermal decomposition reaction Methods 0.000 description 6
- XSAOTYCWGCRGCP-UHFFFAOYSA-K aluminum;diethylphosphinate Chemical compound [Al+3].CCP([O-])(=O)CC.CCP([O-])(=O)CC.CCP([O-])(=O)CC XSAOTYCWGCRGCP-UHFFFAOYSA-K 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- FDPPRGFSWMXMAW-UHFFFAOYSA-K aluminum butyl(methyl)phosphinate Chemical compound [Al+3].CCCCP(C)([O-])=O.CCCCP(C)([O-])=O.CCCCP(C)([O-])=O FDPPRGFSWMXMAW-UHFFFAOYSA-K 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 229920000877 Melamine resin Polymers 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000000498 ball milling Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010000 carbonizing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical group [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 0.000 description 2
- REBHQKBZDKXDMN-UHFFFAOYSA-M [PH2]([O-])=O.C(C)[Al+]CC Chemical compound [PH2]([O-])=O.C(C)[Al+]CC REBHQKBZDKXDMN-UHFFFAOYSA-M 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- KTLIMPGQZDZPSB-UHFFFAOYSA-M diethylphosphinate Chemical compound CCP([O-])(=O)CC KTLIMPGQZDZPSB-UHFFFAOYSA-M 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004154 testing of material Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/53—Phosphorus bound to oxygen bound to oxygen and to carbon only
- C08K5/5313—Phosphinic compounds, e.g. R2=P(:O)OR'
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/15—Heterocyclic compounds having oxygen in the ring
- C08K5/151—Heterocyclic compounds having oxygen in the ring having one oxygen atom in the ring
- C08K5/1535—Five-membered rings
-
- 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
- C08K9/00—Use of pretreated ingredients
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
-
- 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
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
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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)
Abstract
The invention discloses a phenolphthalein-based carbon forming agent composition for flame retardance, a preparation method thereof and application thereof in nylon 66, and belongs to the technical field of high polymer materials. The composition comprises the following components in percentage by mass: aluminum methyl butyl phosphinate: 60-90 percent of phenolphthalein: 5-20% of zinc stearate: 5-20%. The composition with a certain proportion is added into nylon 66 resin to prepare the nylon composite material, which is beneficial to improving the overall performance of the material.
Description
Technical Field
The invention relates to a composition with a flame-retardant function, belongs to the technical field of high polymer materials, and particularly relates to a phenolphthalein-based charring agent composition for flame retardance, a preparation method thereof and application thereof in nylon 66.
Background
Nylon 66 (PA 66) is an important engineering plastic, has the advantages of excellent impact resistance, good wear resistance, lower friction coefficient, chemical resistance and the like, and is widely applied to the fields of automobiles, national defense, electronic appliances and the like. However, the use of nylon 66 materials with flame retardant properties has been receiving attention from researchers because of its inherent poor flame retardancy.
At present, two flame-retardant systems are mainly studied on flame retardance of nylon, one is a halogen-containing flame-retardant system, and although the flame retardance efficiency is high, the application of the halogen-containing flame-retardant system brings about hidden danger of safety and environmental protection. The other is a halogen-free flame-retardant system, the application of the halogen-free flame-retardant system is wider, namely red phosphorus and melamine, the red phosphorus seriously influences the application of the halogen-free flame-retardant system in nylon materials due to the defects of color and storage, and the melamine flame-retardant system has better flame-retardant efficiency, but has poorer heat stability and higher content when being applied to nylon 66, and greatly influences the physical properties of the nylon materials.
Therefore, there remains a need to develop and research flame retardant or flame retardant compositions suitable for nylon 66 materials.
Disclosure of Invention
In order to solve the technical problems, the invention provides a phenolphthalein-based charring agent composition for flame retardance, a preparation method thereof and application thereof in nylon 66. The composition has the advantages of high temperature resistance, good char formation, good compatibility with nylon 66 resin matrix, small influence on the mechanical properties of matrix materials and the like, and the prepared composite material has excellent flame retardant property and mechanical properties, and the flame retardant property can reach UL 94V-0 level.
The invention discloses a phenolphthalein-based charring agent composition for flame retardance, which comprises the following components in percentage by mass:
60 to 90 percent of aluminum methyl butyl phosphinate
5 To 20 percent of phenolphthalein
5-20% Of zinc stearate;
and placing the phenolphthalein in a muffle furnace, and calcining for 2 hours at the temperature of 300 ℃.
Further, the aluminum methylbutylphosphinate has an average particle diameter of 40.362. Mu.m.
Further, the composite material consists of the following components in percentage by mass:
aluminum methyl butyl phosphinate 73.3%
Phenolphthalein 20%
6.7% Of zinc stearate.
The phenolphthalein has the characteristics of high thermal decomposition and high carbon residue rate, the effect of the flame retardant material in the aspect of condensed phase flame retardance is improved, and the combination of the phenolphthalein and the aluminum methyl butyl phosphinate is beneficial to better exerting the performance of the flame retardant.
The invention also provides a preparation method of the phenolphthalein-based flame-retardant char-forming agent composition, which comprises the steps of uniformly mixing the components in the formula ratio and then ball-milling for 20-40 min.
The invention further provides a nylon 66 composite material prepared from the composition, which comprises the following raw materials in percentage by mass:
75 to 95 percent of nylon 66 resin
5-25% Of the composition.
Further, the nylon 66 composite material comprises the following raw materials in percentage by mass:
nylon 66 resin 85%
15% Of the composition.
From the above, the composition has a small amount of addition, and has little influence on the mechanical properties of the nylon material.
The fourth object of the invention is to provide a preparation method of the nylon 66 composite material, which comprises the following steps:
1) Uniformly mixing nylon 66 resin and the composition according to the formula ratio to obtain a mixed base material;
2) Adding the mixed base material obtained in the step 1) into a homodromous double-screw extruder for processing;
3) And (3) carrying out molding processing on the granules obtained in the step (2) through an injection molding machine.
Further, in the step 2), the processing temperature is 290-300 ℃, and the rotating speed of the co-rotating double screw extruder is set to 160-220 r/min.
Further, in the step 3), the molding processing temperature of the injection molding machine is 290-300 ℃.
A fifth object of the present invention is to disclose the use of the nylon 66 composite described above in electronic devices.
The beneficial effects of the invention are mainly reflected in the following aspects:
1. the invention provides a phenolphthalein-based carbon forming agent composition for flame retardance, which has the characteristics of high temperature resistance, good carbon forming property, good compatibility with a nylon 66 resin matrix, small influence on the mechanical properties of a matrix material and the like.
2. According to the nylon composite material provided by the invention, a carbon source of phenolphthalein as a carbon forming agent and an acid source acting on the aluminum methyl butyl phosphinate flame retardant are found through experimental research by adding a carbon forming agent composition for phenolphthalein-based flame retardance into nylon 66, so that the crosslinking action of the nylon 66 matrix is promoted before and during the degradation of the nylon 66 matrix, the formation and stability of a carbon layer are accelerated in the combustion process, and the formed compact carbon layer plays a role in isolating the outside from oxygen, so that the flame retardant property of the nylon 66 is finally improved.
Drawings
FIG. 1 is a graph showing the thermal decomposition of phenolphthalein.
FIG. 2 is a thermal decomposition curve of aluminum methylbutylphosphinate as a flame retardant.
Detailed Description
For a better explanation of the present invention, the main content of the present invention is further elucidated below in conjunction with the specific examples, but the content of the present invention is not limited to the following examples only.
Example 1
The embodiment discloses a preparation method of a nylon 66 composite material, which comprises the following steps:
1) The phenolphthalein is firstly placed in a muffle furnace and calcined for 2 hours at the temperature of 300 ℃.
2) Uniformly mixing the preparation materials of aluminum methyl butyl phosphinate, phenolphthalein and zinc stearate in a mass ratio of 11:1:3, and ball-milling for 30 minutes by using a ball mill to obtain a phenolphthalein-based carbon forming agent composition for flame retardance;
3) Fully mixing 15g of the phenolphthalein-based flame retardant carbonizing agent composition obtained in the step 1) with 85g of nylon 66 resin to obtain a mixed base material; adding the mixed base material into a co-rotating double-screw extruder for processing; the temperature is 290 ℃, and the rotating speed is set to 160-220 r/min.
3) And (3) carrying out molding processing on the granules obtained in the step (2) by an injection molding machine to obtain the composite material, wherein the temperature of the injection molding machine is 290 ℃.
Example 2
The present example discloses a method for preparing nylon 66 composite, which differs from the above example 1 in that the aluminum methyl butyl phosphinate: phenolphthalein: zinc stearate = 11:2:2, the remaining conditions all remained the same.
Example 3
The present example discloses a method for preparing nylon 66 composite, which differs from the above example 1 in that the aluminum methyl butyl phosphinate: phenolphthalein: zinc stearate = 11:3:1, the remaining conditions all remained the same.
Example 4
The present example discloses a method for preparing nylon 66 composite material, which is different from the above example 1 in that in the step 2), the mixed base material is added into a co-rotating twin screw extruder for processing; the temperature is 300 ℃;
in step 3), the temperature of the injection molding machine was 300 ℃.
Comparative example 1
The pure nylon 66 resin was molded by an injection molding machine, and the other was the same as in example 1.
Comparative example 2
10G of diethyl aluminum phosphinate flame retardant and 90g of nylon 66 resin are weighed and fully mixed to obtain a mixed base material.
Extruding and granulating the mixed base material in a co-rotating double screw extruder, wherein the temperature range is 290-300 ℃, and the rotating speed is set to 160-220 r/min.
And molding the obtained granules in an injection molding machine to obtain the nylon 66 flame-retardant composite material, wherein the temperature of the injection molding machine is 290-300 ℃.
Comparative example 3
This comparative example differs from comparative example 2 in that 15g of aluminum diethylphosphinate flame retardant and 85g of nylon 66 resin were added, and the remaining conditions were kept identical.
Comparative example 4
This comparative example differs from comparative example 2 in that 20g of aluminum diethylphosphinate flame retardant and 80g of nylon 66 resin were added, and the remaining conditions were kept identical.
Comparative example 5
This example discloses a method for preparing a nylon composite, which differs from example 3 above in that the aluminum methyl butyl phosphinate flame retardant in the phenolphthalein-based flame retardant char former composition is replaced with an aluminum diethyl phosphinate flame retardant.
Comparative example 6
This example discloses a method for preparing nylon composite, which differs from example 3 above in that the aluminum methyl butyl phosphinate flame retardant in the phenolphthalein-based flame retardant char former composition is replaced with zinc diethyl phosphinate flame retardant.
Application and testing of materials:
The samples prepared in the above examples and comparative examples were tested for tensile properties using a universal tester (according to GB/T2568-1995 at a tensile rate of 5 mm/min); the combustion performance of the fuel is tested by adopting a CZF-3 type horizontal and vertical combustion tester produced by Nanjing Jiang Ning analytical instrument factory (the testing standard is selected from national standard GB/T2408 in China); the LOI value of the strain is tested by adopting a JF-3 type oxygen index instrument produced by Nanjing Jiang Ning analytical instrument factory (the test standard is selected from Chinese national standard GB/T2406); the thermal performance of the glass was tested by using a TG209-F3 thermogravimetric analyzer (test atmosphere using nitrogen atmosphere, carrier gas flow rate of 100ml/min, heating rate of 20 ℃/min, test range of 40-700 ℃) to obtain Table 1;
Table 1 list of properties of the composite materials prepared in examples and comparative examples
Comparing the data in Table 1, it can be found that the LOI of the pure nylon 66 resin is only 23% and fails the UL-94 vertical burning test. When the diethyl phosphinate aluminum salt flame retardant (comparative examples 2, 3 and 4) is added separately, the flame retardant performance of the prepared nylon 66 material is improved, but the tensile strength of the nylon 66 material is also reduced. No matter the aluminum diethylphosphinate or zinc diethylphosphinate is used for replacing the aluminum methylbutylphosphinate in the composition, the mechanical property and the flame retardant property are not better than the application.
The nylon 66 composite material prepared by adding the phenolphthalein-based flame retardant carbonizing agent composition provided by the invention as a flame retardant (examples 1,2 and 3) has greatly improved flame retardant property, has overall performance superior to that of the nylon 66 composite material prepared by the aluminum diethylphosphinate flame retardant, and has less influence on the tensile property of nylon 66 resin.
The phenolphthalein-based charring agent composition for flame retardance provided by the invention is used by introducing the phenolphthalein and the aluminum methyl butyl phosphinate flame retardant to be matched, the phenolphthalein has the characteristics of high thermal decomposition and high carbon residue rate, the effect of a flame retardant material on the aspect of condensed phase flame retardance is improved, and the composition has the characteristics of high temperature resistance, good charring performance, good compatibility with a nylon 66 resin matrix, small influence on the mechanical properties of the matrix material and the like. The phenolphthalein-based carbon forming agent composition for flame retardance is simple in preparation process and can be prepared in a technological manner. The nylon 66 composite material prepared by the composition has excellent flame retardant property and mechanical property, and the flame retardant property can reach UL 94V-0 level. Therefore, the nylon 66 composite material has a good application prospect in the field of electronic devices.
As can be seen from the accompanying figure 1 of the specification, the initial thermal decomposition temperature of phenolphthalein is about 320 ℃, and the carbon residue at 700 ℃ is as high as 37%.
As can be seen in FIG. 2, the initial thermal decomposition temperature of aluminum methylbutylphosphinate is around 350℃and its carbon residue at 700℃is as high as 39%.
The above examples are only the best illustration and are not limiting of the embodiments of the invention. In addition to the embodiments described above, the present invention is also directed to other embodiments. All technical schemes formed by equivalent substitution or equivalent transformation fall within the protection scope of the invention.
Claims (10)
1. The phenolphthalein-based charring agent composition for flame retardance is characterized by comprising the following components in percentage by mass:
60-90% of aluminum methyl butyl phosphinate;
5-20% of phenolphthalein;
5-20% of zinc stearate;
and placing the phenolphthalein in a muffle furnace, and calcining for 2 hours at the temperature of 300 ℃.
2. The phenolphthalein-based flame retardant char-forming agent composition as claimed in claim 1, wherein said aluminum methyl butyl phosphinate has an average particle size of 40.362 μm.
3. A phenolphthalein-based flame retardant char-forming agent composition as claimed in claim 1 or claim 2, which is characterized by comprising the following components in percentage by mass:
73.3% of aluminum methyl butyl phosphinate;
20% of phenolphthalein;
6.7% of zinc stearate.
4. A method for preparing the phenolphthalein-based flame retardant char-forming agent composition according to claim 1, 2 or 3, which is characterized in that the components with the formula ratio are evenly mixed and ball-milled for 20-40 min.
5. The nylon 66 composite material is characterized by comprising the following raw materials in percentage by mass:
75-95% of nylon 66 resin;
5-25% of a composition;
the composition is the phenolphthalein-based flame retardant char-forming agent composition as described in any one of claims 1 to 3.
6. The nylon composite of claim 5, wherein the nylon composite comprises the following raw materials in percentage by mass:
Nylon 66 resin 85%
15% Of the composition.
7. A method of making a nylon 66 composite of claim 5 or 6, comprising the steps of:
1) Uniformly mixing nylon 66 resin and the composition according to the formula ratio to obtain a mixed base material;
2) Adding the mixed base material obtained in the step 1) into a homodromous double-screw extruder for processing;
3) And (3) carrying out molding processing on the granules obtained in the step (2) through an injection molding machine.
8. The method for preparing nylon 66 composite material according to claim 7, wherein in the step 2), the processing temperature is 290-300 ℃, and the rotation speed of the co-rotating twin-screw extruder is 160-220 r/min.
9. The method for preparing nylon 66 composite material according to claim 7, wherein in the step 3), the molding temperature of the injection molding machine is 290-300 ℃.
10. Use of the nylon 66 composite of claim 5 in an electronic device.
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| CN102675630A (en) * | 2011-03-18 | 2012-09-19 | 上海枫化兆质新材料科技有限公司 | Preparation method of halogen-free flame-retardant nylon 6 |
| CN102690491A (en) * | 2012-05-11 | 2012-09-26 | 金发科技股份有限公司 | Heat-resistant, halogen-free and flame-retardant ABS (acrylonitrile butadiene styrene) resin composite and preparation method thereof |
| CN103642178A (en) * | 2013-12-02 | 2014-03-19 | 合肥安聚达新材料科技有限公司 | Halogen-free flame-retardant thermoplastic polyester elastomer nano composite material and preparation method thereof |
| CN112608592A (en) * | 2020-11-26 | 2021-04-06 | 浙江旭森非卤消烟阻燃剂有限公司 | High-dispersibility high-concentration nylon-based halogen-free flame-retardant master batch and preparation method thereof |
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