CN116496620A - Low-temperature-resistant high-impact-resistant high-flame-retardant polyamide composite material and preparation method thereof - Google Patents
Low-temperature-resistant high-impact-resistant high-flame-retardant polyamide composite material and preparation method thereof Download PDFInfo
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- 239000003063 flame retardant Substances 0.000 title claims abstract description 51
- 239000004952 Polyamide Substances 0.000 title claims abstract description 44
- 229920002647 polyamide Polymers 0.000 title claims abstract description 44
- 239000002131 composite material Substances 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title abstract description 6
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 claims abstract description 44
- 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 claims abstract description 42
- 229920005989 resin Polymers 0.000 claims abstract description 28
- 239000011347 resin Substances 0.000 claims abstract description 28
- BZQKBFHEWDPQHD-UHFFFAOYSA-N 1,2,3,4,5-pentabromo-6-[2-(2,3,4,5,6-pentabromophenyl)ethyl]benzene Chemical compound BrC1=C(Br)C(Br)=C(Br)C(Br)=C1CCC1=C(Br)C(Br)=C(Br)C(Br)=C1Br BZQKBFHEWDPQHD-UHFFFAOYSA-N 0.000 claims abstract description 20
- DYAHQFWOVKZOOW-UHFFFAOYSA-N Sarin Chemical compound CC(C)OP(C)(F)=O DYAHQFWOVKZOOW-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000004576 sand Substances 0.000 claims abstract description 7
- 239000003963 antioxidant agent Substances 0.000 claims description 21
- 239000000314 lubricant Substances 0.000 claims description 18
- 230000003078 antioxidant effect Effects 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 13
- 238000001125 extrusion Methods 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 239000000155 melt Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 4
- OKOBUGCCXMIKDM-UHFFFAOYSA-N Irganox 1098 Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)NCCCCCCNC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 OKOBUGCCXMIKDM-UHFFFAOYSA-N 0.000 claims description 3
- 150000001408 amides Chemical class 0.000 claims description 3
- 229920006242 ethylene acrylic acid copolymer Polymers 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 2
- 238000001746 injection moulding Methods 0.000 abstract description 5
- 239000002861 polymer material Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 29
- 239000000463 material Substances 0.000 description 14
- 230000000694 effects Effects 0.000 description 9
- 238000012360 testing method Methods 0.000 description 8
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 7
- 230000001681 protective effect Effects 0.000 description 6
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 5
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 229920002943 EPDM rubber Polymers 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 240000002834 Paulownia tomentosa Species 0.000 description 2
- 235000010678 Paulownia tomentosa Nutrition 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- JDTMNMAQWVSSOO-MRVPVSSYSA-N (r)-2-(formyloxy)-3-(phosphonooxy)propyl pentanoate Chemical compound CCCCC(=O)OC[C@@H](OC=O)COP(O)(O)=O JDTMNMAQWVSSOO-MRVPVSSYSA-N 0.000 description 1
- 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 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229920006114 semi-crystalline semi-aromatic polyamide Polymers 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000012745 toughening agent Substances 0.000 description 1
Classifications
-
- 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
- C08L77/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
-
- 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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- 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 relates to the technical field of flame-retardant high polymer materials, in particular to a low-temperature-resistant high-impact-resistant high-flame-retardant polyamide composite material and a preparation method thereof. The polyamide composite material comprises the following components: PA6, PA56, flame retardant, and sand resin; the flame retardant comprises decabromodiphenyl ethane and antimony trioxide; the ratio of the PA6, the PA56, the decabromodiphenyl ethane, the antimonous oxide and the sarin resin is (42.3-62.3) in parts by weight: (13-18) 4:15. the polyamide composite material has high flame retardant property and low temperature impact resistance, and simultaneously has good mechanical property and easy injection molding processability, can meet market demands, and has high commercial value.
Description
Technical Field
The invention relates to the technical field of flame-retardant high polymer materials, in particular to a low-temperature-resistant high-impact-resistant high-flame-retardant polyamide composite material and a preparation method thereof.
Background
The polyamide, which is one of the five engineering plastics with the largest yield, the largest variety and the largest application, has very high mechanical strength, electrical insulation, wear resistance, oil resistance, weak acid resistance, alkali resistance and general organic solvent resistance,
in recent years, semi-crystalline polyamides are widely used in the fields of electronics, electricity, protective equipment and the like, however, these fields have high requirements on the flame retarding ability of materials. The unmodified polyamide has poor flame retardance and is extremely easy to cause fire in the use process, so that the polyamide needs to be subjected to flame retardance modification, such as modification by adding a flame retardant frequently, when the polyamide is applied to the fields.
Since most of the prior protective equipment is not flame retardant, with frequent safety accidents, people pay more attention to the flame retardant performance of the protective equipment. Therefore, the polyamide material applied to the protective equipment is subjected to flame retardant modification, meets the market demand of the polyamide material applied to the protective equipment, and can improve the market competitiveness.
The brominated flame-retardant polyamide system has good flame-retardant property and also has good toughness, and is often applied to polyamide materials of protective equipment. However, with the development of industry and the use demands of people, in the antiriot industry, materials specified in the latest standard GA420-2021 have not only high flame retardant performance, but also good low-temperature (-20 ℃) impact resistance.
It is known to those skilled in the art that to improve the toughness of polyamide materials, it is conventional practice to add toughening agents to toughen, such as polyolefin grafted maleic anhydride or rubber type tougheners, but the addition of such type tougheners adversely affects the flame retardant properties of the polyamide.
Therefore, a polyamide material with high flame retardant property and low temperature impact resistance is needed in the market, and meanwhile, the polyamide material has good tensile bending mechanical property and easy injection molding processing property, and can meet the application requirements of the material market.
Disclosure of Invention
In order to solve the problems of the prior art mentioned in the background art, the invention provides a low-temperature-resistant high-impact-resistant high-flame-retardant polyamide composite material, which has the following technical scheme:
the low-temperature-resistant high-impact-resistant high-flame-retardant polyamide composite material comprises the following components: PA6, PA56, flame retardant, and sand resin; the flame retardant comprises decabromodiphenyl ethane and antimony trioxide; the ratio of the PA6, the PA56, the decabromodiphenyl ethane, the antimonous oxide and the sarin resin is (42.3-62.3) in parts by weight: (13-18) 4:15.
in one embodiment, the PA6 has a relative viscosity of 2.4-2.7.
In one embodiment, the sarin resin is sarin resin 9320.
In one embodiment, an antioxidant and a lubricant are also included.
In one embodiment, the composition comprises the following components in parts by weight: 42.3-62.3 parts of PA6, 56-25 parts of PA, 13-18 parts of decabromodiphenyl ethane, 4 parts of antimonous oxide, 15 parts of sarin resin, 0.2-0.5 part of antioxidant and 0.2-0.5 part of lubricant.
In one embodiment, the antioxidant comprises one or more of an antioxidant 1098, a phosphite antioxidant, or a combination thereof.
In one embodiment, the lubricant is one or more of stearate, ethylene acrylic acid copolymer, amide type lubricant.
The preparation method of the low-temperature-resistant high-impact-resistant high-flame-retardant polyamide composite material comprises the following steps of:
weighing raw material components according to a certain weight, and mixing to obtain a mixture M; the mixture M is added into a double-screw extruder, and the polyamide composite material is prepared after the double-screw extruder is subjected to melt extrusion.
In one embodiment, the melt extrusion temperature in the twin screw extruder is (200-280).
Compared with the prior art, the low-temperature-resistant high-impact-resistant high-flame-retardant polyamide composite material provided by the invention has the following technical effects:
the polyamide composite material has high flame retardant property and low temperature impact resistance, and simultaneously has good mechanical property and easy injection molding processability, can meet market demands, and has high commercial value.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the following description will be made in connection with the technical solutions in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a preparation method of a low-temperature-resistant high-impact-resistant high-flame-retardant polyamide composite material, which comprises the following steps:
(1) Weighing PA6, PA56, decabromodiphenyl ethane, antimonous oxide, sarin resin, antioxidant and lubricant according to a certain weight, and adding into a high-speed stirrer to be fully and uniformly mixed to prepare a uniformly mixed mixture M;
(2) And (3) feeding the mixture M into a double-screw extruder through a metering feeding device, fully fusing and fusing the materials under the shearing, mixing and conveying of screws, and finally extruding, bracing and cooling to prepare a finished product of the granules. Wherein the melt extrusion temperature in the twin-screw extruder is (200-280), the length-diameter ratio of the screw of the twin-screw extruder is (40-48): 1, and the screw rotating speed is (280-480) rpm.
The formula of the low-temperature-resistant high-impact-resistant high-flame-retardant polyamide composite material is as follows: the coating comprises the following components in parts by weight: 42.3-62.3 parts of PA6, 56-25 parts of PA, 13-18 parts of decabromodiphenyl ethane, 4 parts of antimonous oxide, 15 parts of sarin resin, 0.2-0.5 part of antioxidant and 0.2-0.5 part of lubricant.
The invention also provides the following examples and comparative examples:
the formulations (unit: parts by weight) of examples and comparative examples provided by the present invention are shown in table 1 below:
TABLE 1
| Component weight | Example 1 | Example 2 | Example 3 | Example 4 | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| PA6 | 54.3 | 50.3 | 46.3 | 42.3 | 62.3 | 62.3 | 44.3 |
| PA56 | 10 | 15 | 20 | 25 | - | - | 20 |
| N416 | - | - | - | - | 15 | - | - |
| 5805-L | - | - | - | - | - | 15 | 15 |
| Sarin resin 9320 | 15 | 15 | 15 | 15 | - | - | - |
| Decabromodiphenyl ethane | 16 | 15 | 14 | 13 | 18 | 18 | 16 |
| Antimony trioxide | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Lubricant | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 |
| Antioxidant | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
| Component weight | Comparative example 4 | Comparative example 5 | Comparative example 6 | Comparative example 7 | Comparative example 8 | Comparative example 9 | Comparative example 10 |
| PA6 | 44.3 | 64.3 | 56.3 | 37.3 | 46.3 | 49.3 | 61.8 |
| PA56 | 20 | - | 8 | 30 | 20 | 10 | 10 |
| N416 | 15 | - | - | - | - | - | - |
| 5805-L | - | - | - | - | - | - | - |
| Sarin resin 9320 | - | 15 | 15 | 15 | 15 | 15 | 15 |
| Decabromodiphenyl ethane | 16 | 16 | 16 | 13 | - | 20 | 10 |
| Antimony trioxide | 4 | 4 | 4 | 4 | - | 5 | 2.5 |
| Red phosphorus master batch | - | - | - | - | 18 | - | - |
| Lubricant | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 |
| Antioxidant | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
Wherein the components in table 1 are specifically:
the PA6 is HY2500A of Jiangsu sea yang, and the relative viscosity is 2.41; PA56 adopts E-2260 of Shanghai Kaiser; decabromodiphenyl ethane adopts RDT-3 of longevity Wei Dong; the antimonous oxide is antimonous oxide in Hunan Chen; EPDM grafted maleic anhydride was N416 from dupont; the POE grafting maleic anhydride adopts 5805-L which is easy to contain in Shanghai; the sarin resin is DuPont sarin resin 9320; the antioxidant is prepared by compounding antioxidants 1098 and 168 (1:1) of Tianjin An Long; the lubricant adopts calcium stearate of great macro in Jiangxi province. The red phosphorus master batch is selected from 9950A of Tung City letter.
According to the formulation of table 1, the raw material components in the examples and comparative examples were prepared as follows:
(1) Weighing PA6, PA56, decabromodiphenyl ethane, antimonous oxide, sarin resin, antioxidant and lubricant according to a certain weight, and adding into a high-speed stirrer to be fully and uniformly mixed to prepare a uniformly mixed mixture M;
(2) And feeding the mixture M into a double-screw extruder through a metering feeding device, fully fusing and fusing the materials under the shearing, mixing and conveying of screws, and finally extruding, bracing and cooling to prepare a finished product of the granules. Wherein, the temperature of each zone of the twin-screw extruder is 200 ℃, 220 ℃, 210 ℃, 220 ℃, the temperature of a machine head is 220 ℃, the screw rotating speed is 350rpm, and the screw length-diameter ratio of the twin-screw extruder is 40:1 from 1 to 10 zones in sequence.
Wherein, the red phosphorus master batch of comparative example 8 is obtained by directly purchasing 9950A of Tung City information. In comparative example 8, decabromodiphenylethane and antimony trioxide in step (1) were replaced with red phosphorus master batch, and were homogeneously mixed with other raw materials, and the mixture M was fed into a twin-screw extruder via a metered feeding device.
The polyamide composite materials prepared in examples and comparative examples were subjected to the test for the relevant performance index under the same test conditions, and the test results are shown in the following table 2:
TABLE 2
Wherein, the tensile strength test standard is I S0527, and the spline specification is A1 model (gauge length 115mm, parallel part 10mm×4 mm); the bending strength test standard is I SO178, the notch impact strength test standard of the simply supported beam is I SO179, the sample size is 80mm multiplied by 10mm multiplied by 4mm, and if a notch exists, the notch has a reserved width of 8mm; the flame retardant performance test standard is UL94, the specification of the test flame retardant strip is 125 x 13 x 0.8mm, and the flame retardant effect is as follows in the order of the grades from excellent to poor: NV, V2, V1, V0; the melt volume flow rate is tested as GBT 3682-2000.
The test results of the analysis examples and comparative examples can be seen:
1. examples 1 to 5:
the polyamide composite material with low temperature resistance, high impact resistance and high flame retardance provided by the invention not only has excellent high flame retardance (the spline with the thickness of 0.8mm reaches the V0 level in UL 94), but also has good low temperature impact resistance, and the maximum notch impact at-20 ℃ can reach 30KJ/m 2 。
Meanwhile, the plastic has good mechanical property and easy injection molding processability, can meet market demands, and has high commercial value.
2. The comparison results of the examples and the comparative examples show that:
comparative example 1 differs from example 3 in that: the flame retardant is toughened by adopting EPDM grafted maleic anhydride without adding PA56 and sarin resin, and the consumption of the flame retardant is increased, so that compared with the embodiment, the flame retardant effect is obviously poor, and the low-temperature impact strength is poor.
Comparative example 2 differs from example 3 in that: the flame retardant is toughened by POE grafted maleic anhydride without adding PA56 and sarin resin, and the use amount of the flame retardant is increased, so that compared with the embodiment, the flame retardant effect is obviously poor, and the low-temperature impact strength is poor.
Comparative example 3 is different from example 1 in that the sand resin in the example is replaced with POE grafted maleic anhydride 5805-L, and as can be seen from the data, the flame retardant effect is significantly deteriorated and the low temperature impact strength is deteriorated compared with the example; comparative example 4 is different from example 1 in that the sand resin in the example is replaced with EPDM grafted maleic anhydride, and as can be seen from the data, the flame retardant effect is significantly deteriorated and the low temperature impact strength is deteriorated compared with the example;
comparative example 5 is different from example 1 in that: it replaces PA56 in the examples with PA6, and it can be seen from the data that compared with the examples, the comparative examples simply added with PA56 have poor flame retardant effect;
comparative example 6 is different from example 1 in that: the addition amount of the PA56 is lower than the limit range of the application, and compared with the embodiment, the flame retardance is poor as can be seen from the data;
comparative example 7 differs from example 4 in that: the addition amount of the PA56 is beyond the limit of the application, and the impact performance is poor compared with the example as can be seen from the data;
comparative example 8 differs from example 3 in that: the red phosphorus master batch is adopted to replace decabromodiphenyl ethane and antimonous oxide, and the data shows that compared with the embodiment, the impact performance and the flame retardance are both poor;
comparative example 9 is different from example 1 in that: the addition amount of the decabromodiphenyl ethane and the antimonous oxide exceeds the limit range of the application, and the data show that the impact property and the fluidity are poor compared with the examples;
comparative example 10 differs from example 1 in that: the amounts of decabromodiphenylethane and antimony trioxide added were below the limits defined in the present application, and it can be seen from the data that the flame retardance was deteriorated compared with the examples.
In summary, the low-temperature-resistant high-impact-resistant high-flame-retardant polyamide composite material provided by the application at least comprises the following design conception and technical effects:
in the invention, novel substances PA56 and sarin resin 9320 are introduced into a brominated flame-retardant polyamide system consisting of PA6, decabromodiphenyl ethane and antimonous oxide, and the unexpected discovery is that: in a brominated flame-retardant polyamide system, the influence of adding a sand forest resin 9320 with a specific proportion on flame retardance is small, and by matching PA6, PA56 and the sand forest resin in the brominated flame-retardant polyamide system with the specific proportion, the low-temperature (-20 ℃) shock resistance of the flame-retardant polyamide can be obviously improved, and meanwhile, the material is ensured to have excellent flame retardance (reaching the flame retardance effect of UL94 (d=0.8mm) V0); meanwhile, the material also has higher fluidity, which is beneficial to the injection molding processing of the material.
The polyamide composite material with low temperature resistance, high impact resistance and high flame retardance can meet market demands and has high commercial value.
It should be noted that:
in addition to the actual choices presented in the specific examples above, the weight ratio of PA6, PA56, decabromodiphenylethane, antimony trioxide to sarin resin is (42.3-62.3): 10-25): (13-18) 4:15, including but not limited to the actual choices embodied in the embodiments described above;
wherein, except for the actual selection reflected by the specific embodiment, the composition formula is PA6 42.3-62.3 parts, PA 56-25 parts, decabromodiphenyl ethane 13-18 parts, antimony trioxide 4 parts, sarin resin 15 parts, antioxidant 0.2-0.5 parts, and lubricant 0.2-0.5 parts; specific recipe selections include, but are not limited to, the examples described above.
In addition to the practical choices embodied in the specific embodiments described above, preferably the relative viscosity of PA6 is in the range of preferably 2.4 to 2.7, including but not limited to the practical choices embodied in the embodiments described above;
in addition to the actual choices presented in the above embodiments, the antioxidant may be selected from existing commercially available antioxidants, and may include one or more combinations of antioxidants 1098, phosphite antioxidants, including, but not limited to, the actual choices presented in the embodiments; preferably, the antioxidant is compounded by antioxidant 1098 and phosphite antioxidant 168 according to the weight ratio of 1:1,
in addition to the actual choices presented in the specific examples above, the lubricants may be selected from existing commercially available lubricants, which may preferably be one or more combinations of stearates, ethylene acrylic acid copolymers, amide-based lubricants, including, but not limited to, the actual choices presented in the examples;
in summary, the specific parameters or some common reagents or raw materials in the above embodiments are specific embodiments or preferred embodiments under the concept of the present invention, and are not limiting; and can be adaptively adjusted by those skilled in the art within the concept and the protection scope of the invention.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (9)
1. The low-temperature-resistant high-impact-resistant high-flame-retardant polyamide composite material is characterized by comprising the following components: PA6, PA56, flame retardant, and sand resin;
the flame retardant comprises decabromodiphenyl ethane and antimony trioxide;
the ratio of the PA6, the PA56, the decabromodiphenyl ethane, the antimonous oxide and the sarin resin is (42.3-62.3) in parts by weight: (13-18) 4:15.
2. the low temperature, high impact and high flame retardant polyamide composite material according to claim 1, wherein: the relative viscosity of the PA6 is 2.4-2.7.
3. The low temperature, high impact and high flame retardant polyamide composite material according to claim 1, wherein: the sarin resin is sarin resin 9320.
4. The low temperature, high impact and high flame retardant polyamide composite material according to claim 1, wherein: also comprises an antioxidant and a lubricant.
5. The low temperature, high impact and high flame retardant polyamide composite material according to claim 4, wherein: the coating comprises the following components in parts by weight:
42.3-62.3 parts of PA6, 56-25 parts of PA, 13-18 parts of decabromodiphenyl ethane, 4 parts of antimonous oxide, 15 parts of sarin resin, 0.2-0.5 part of antioxidant and 0.2-0.5 part of lubricant.
6. The low temperature, high impact and high flame retardant polyamide composite material according to claim 5, wherein: the antioxidant comprises one or more of antioxidant 1098 and phosphite antioxidant.
7. The low temperature, high impact and high flame retardant polyamide composite material according to claim 5, wherein: the lubricant is one or a combination of more of stearate, ethylene acrylic acid copolymer and amide lubricant.
8. A method for preparing the low temperature resistant, high impact resistant and high flame retardant polyamide composite material according to any one of claims 1 to 7, comprising the steps of:
weighing raw material components according to a certain weight, and mixing to obtain a mixture M;
the mixture M is added into a double-screw extruder, and after the double-screw extruder is subjected to melt extrusion, the polyamide composite material is prepared.
9. The method for preparing the low-temperature-resistant high-impact-resistant high-flame-retardant polyamide composite material according to claim 8, which is characterized in that: the melt extrusion temperature in the double-screw extruder is (200-280).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310606457.6A CN116496620A (en) | 2023-05-26 | 2023-05-26 | Low-temperature-resistant high-impact-resistant high-flame-retardant polyamide composite material and preparation method thereof |
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