CN115044199B - Super-tough flame-retardant nylon composite material and preparation method thereof - Google Patents
Super-tough flame-retardant nylon composite material and preparation method thereof Download PDFInfo
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- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
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Abstract
The invention relates to the technical field of super-tough flame-retardant nylon composite materials, in particular to a super-tough flame-retardant nylon composite material and a preparation method thereof, wherein the super-tough flame-retardant nylon composite material comprises the following raw materials in parts by weight: polyamide, nylon elastomer, modified toughening agent, halogen-free flame retardant, flame retardant synergist, reinforcing fiber, antioxidant and toner. The super-tough flame-retardant nylon composite material is more suitable for manufacturing protective clothing such as bulletproof clothing, explosion-proof clothing and the like, has higher penetration resistance requirements on materials, is often added with a brominated flame retardant or a red phosphorus flame retardant, has high specific gravity, is not environment-friendly, is easy to separate out and is easy to lose efficacy, the toughness of common materials is reduced at a low temperature (-40 ℃), and the protective effect of the protective clothing in a relatively cold environment is greatly reduced.
Description
Technical Field
The invention relates to the technical field of super-tough flame-retardant nylon composite materials, in particular to a super-tough flame-retardant nylon composite material and a preparation method thereof.
Background
Nylon is one of five engineering plastics, has excellent comprehensive properties of wear resistance, heat resistance, chemical resistance, oil resistance, alkali resistance and the like, and is widely applied to the fields of household appliances, automobiles, electronic products, engineering plastics and the like at present. However, the material has some defects such as low toughness, heat resistance, flame retardance and the like, so that the material is difficult to meet the use requirements of certain special fields.
In order to improve the flame retardance, more flame retardant is often added into the existing nylon, so that the V0-grade flame retardant effect is achieved, but the production and the processing are not facilitated, the toughness of the nylon is difficult to be improved greatly even if the toughening agent on the market is added, the flame retardant effect is also influenced, and the strength is difficult to maintain.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, one of the purposes of the invention is to provide a super-tough flame-retardant nylon composite material, which has the advantages that on the premise of ensuring that a certain amount of flame retardant and flame retardant synergist reach the V0-level flame retardant effect, the toughness and low temperature resistance of the composite material are obviously improved by adopting the cooperation and synergistic effect of a special modified toughening agent, a nylon elastomer and reinforcing fibers, and the composite material has better strength.
The second purpose of the invention is to provide a preparation method of the super-tough flame-retardant nylon composite material, which has the advantages of simple operation, convenient control, high production efficiency and low production cost, and can be used for mass production.
One of the purposes of the invention is realized by the following technical scheme: a super-tough flame-retardant nylon composite material comprises the following raw materials in parts by weight:
the super-tough flame-retardant nylon composite material takes polyamide as a main raw material, and nylon elastomer, a modified toughening agent, a halogen-free flame retardant, a flame-retardant synergist, reinforcing fibers, an antioxidant and toner are added to achieve a V0-level flame-retardant effect, in addition, the toughness and low temperature resistance of the super-tough flame-retardant nylon composite material are obviously improved by adopting the special modified toughening agent, the nylon elastomer and the reinforcing fibers to cooperate and cooperate, the better strength is maintained, the problems that the production and blanking are difficult and the material is blocked due to the large addition of the flame retardant are avoided, and the better strength and toughness cannot be maintained due to the large performance influence of the material are avoided; the super-tough flame-retardant nylon composite material is more suitable for manufacturing protective clothing such as bulletproof clothing, explosion-proof clothing and the like, has higher penetration resistance requirements on materials, is often added with a brominated flame retardant or a red phosphorus flame retardant, has high specific gravity, is not environment-friendly, is easy to separate out and is easy to lose efficacy, the toughness of common materials is reduced at a low temperature (-40 ℃), and the protective effect of the protective clothing in a relatively cold environment is greatly reduced.
Preferably, the polyamide has an intrinsic viscosity of 2.7 to 3.2dL/g; the polyamide is at least one of PA66, PA56 and PA6.
Preferably, the nylon elastomer is a polyether block polyamide, and the melting temperature of the polyether block polyamide is 135-204 ℃.
By adopting the technical scheme, the anti-shock rubber is easy to process and color, has excellent shock resistance, and has high elasticity and recovery performance particularly in a low-temperature environment; the modified toughening agent and the modified toughening agent are synergistic, so that the toughness is improved and better strength is maintained; more preferably, the polyether block polyamide is selected from Pebax 35r53 SP01, pebax5533SP01 or MH1657.
Preferably, the preparation method of each part of the modified toughening agent comprises the following steps:
r1, taking 30-50 parts by weight of SEBS-G-MAH, 10-20 parts by weight of ethylene propylene diene monomer, 5-10 parts by weight of liquid halogen-free flame retardant and 5-10 parts by weight of filling oil for standby;
r2, mixing ethylene propylene diene monomer, a liquid halogen-free flame retardant and filling oil, and adding SEBS-G-MAH for blending to obtain a blend;
r3, banburying the blend at 175-185 ℃ for 20-30min, and then extruding and granulating to obtain the modified toughening agent.
By adopting the technical scheme, the preparation method of the modified toughening agent takes SEBS-G-MAH as a toughening main material, has high strength, elasticity, durability, transparency and colorability, takes ethylene propylene diene monomer rubber as a soft segment, is filled with the liquid halogen-free flame retardant and filling oil, improves the overall elasticity and toughness, obtains higher efficient flame retardant performance, is beneficial to reducing the consumption of the flame retardant, not only can well toughen, but also can keep the performance of the material continuously without affecting the original flame retardant system.
Preferably, the SEBS-G-MAH is selected from G-1650 or FG-1091; the Mooney viscosity (ML (1+4) 125 ℃) of the ethylene propylene diene monomer is 45-55, and the ethylene content is 50-60%; the liquid halogen-free flame retardant is resorcinol bis (diphenyl phosphate) and/or bisphenol A bis (diphenyl phosphate); the filling oil is industrial white oil.
By adopting the technical scheme, the SEBS-G-MAH adopts G-1650 or FG-1091, is more beneficial to oil filling, has good blending fluidity, and improves the strength and the processability; the liquid halogen-free flame retardant is resorcinol bis (diphenyl phosphate) and/or bisphenol A bis (diphenyl phosphate) so as to be combined and modified with SEBS-G-MAH and ethylene propylene diene monomer rubber to obtain higher efficient flame retardant performance.
Preferably, the halogen-free flame retardant is diethyl aluminum phosphinate or diethyl magnesium phosphinate.
By adopting the technical scheme, the problems of high specific gravity and environmental protection caused by adopting a brominated flame retardant can be avoided, and the problem of precipitation failure caused by adopting red phosphorus can be avoided.
Preferably, the flame retardant synergist is at least one of an MCA flame retardant, an MPP flame retardant, an organosilicon flame retardant and a polyphosphite flame retardant.
By adopting the technical scheme, the halogen-free flame retardant, the modified toughening agent and the flame retardant synergist are synergistic, and the V0-level flame retardant effect is achieved under the condition of lower flame retardant addition.
Further, the organic silicon flame retardant is at least one of polyphenyl methyl siloxane, polyphenyl silsesquioxane and phenol end group dimethyl siloxane; the polyphosphite flame retardant is zinc polyphosphite or aluminum polyphosphite.
Preferably, the reinforcing fiber is glass fiber or carbon fiber, and the chopped length of the reinforcing fiber is 2.5-2.8mm; the antioxidant is hydrolysis-resistant antioxidant, more preferably, the hydrolysis-resistant antioxidant is selected from antioxidant 1076, antioxidant S9228T or antioxidant S-680.
By adopting the technical scheme, the chopped length of the reinforced fiber is 2.5-2.8mm, the reserved length of the reinforced fiber can be the critical proper length under the condition of the existing screw combination, the length distribution of the reinforced fiber is narrower, the reinforced fiber has lower warping degree and better dimensional stability, the fiber content and mechanical property are improved, and the super-tough flame-retardant nylon composite material has higher impact strength and improved toughness.
The second purpose of the invention is realized by the following technical scheme: the preparation method of the super-tough flame-retardant nylon composite material comprises the following steps:
s1, taking polyamide, nylon elastomer, modified toughening agent, halogen-free flame retardant, flame retardant synergist, reinforcing fiber, antioxidant and toner according to parts by weight for standby;
s2, premixing polyamide and 0.1 part of diffusion oil in a high-speed mixer for 1-3min, mixing with other raw materials for 1-3min, discharging, extruding and granulating by a double-screw extruder, wherein the processing temperatures of each section of the double-screw extruder from a feeding section are respectively as follows: 190-210 ℃, 230-250 ℃ and 235-245 ℃, 240-250 ℃, the temperature of the machine head is 230-250 ℃, the rotating speed of the screw is 320-400r/min, and the super-tough flame-retardant nylon composite material is prepared.
The invention has the beneficial effects that: the super-tough flame-retardant nylon composite material disclosed by the invention takes polyamide as a main raw material, and nylon elastomer, a modified toughening agent, a halogen-free flame retardant, a flame-retardant synergist, reinforcing fibers, an antioxidant and toner are added to achieve a V0-level flame-retardant effect, in addition, the toughness and low temperature resistance of the super-tough flame-retardant nylon composite material are obviously improved by adopting the special modified toughening agent, the nylon elastomer and the reinforcing fibers to cooperate and cooperate, the better strength is maintained, the problems that the production and blanking are difficult and the material is blocked due to the large addition of the flame retardant are avoided, and the better strength and toughness cannot be maintained due to the larger influence of the performance of the material are avoided; the super-tough flame-retardant nylon composite material is more suitable for manufacturing protective clothing such as bulletproof clothing, explosion-proof clothing and the like, has higher penetration resistance requirements on materials, is often added with a brominated flame retardant or a red phosphorus flame retardant, has high specific gravity, is not environment-friendly, is easy to separate out and is easy to lose efficacy, the toughness of common materials is reduced at a low temperature (-40 ℃), and the protective effect of the protective clothing in a relatively cold environment is greatly reduced.
The preparation method of the invention has simple operation, convenient control, high production efficiency and low production cost, and can be used for mass production.
Detailed Description
The invention will be further illustrated by the following examples, which are not intended to limit the scope of the invention, in order to facilitate the understanding of those skilled in the art.
Example 1
A super-tough flame-retardant nylon composite material comprises the following raw materials in parts by weight:
the intrinsic viscosity of the polyamide is 3.0dL/g; the polyamide is PA66.
The nylon elastomer is polyether block polyamide Pebax 35r53 sp01.
The preparation method of each part of modified toughening agent comprises the following steps:
r1, 40 parts of SEBS-G-MAH, 15 parts of ethylene propylene diene monomer rubber, 8 parts of liquid halogen-free flame retardant and 8 parts of filling oil are taken according to parts by weight for standby;
r2, mixing ethylene propylene diene monomer, a liquid halogen-free flame retardant and filling oil, and adding SEBS-G-MAH for blending to obtain a blend;
r3, banburying the blend at 180 ℃ for 25min, and then extruding and granulating to obtain the modified toughening agent.
The SEBS-G-MAH is selected from G-1650; the Mooney viscosity [ ML (1+4) 125 ℃ C. ] of the ethylene propylene diene monomer is 50, and the ethylene content is 55%; the liquid halogen-free flame retardant is resorcinol bis (diphenyl phosphate); the filling oil is industrial white oil.
The halogen-free flame retardant is diethyl aluminum phosphinate.
The flame retardant synergist is an MCA flame retardant.
The reinforcing fibers are carbon fibers, and the chopped length of the reinforcing fibers is 2.6mm; the antioxidant is antioxidant 1076.
The preparation method of the super-tough flame-retardant nylon composite material comprises the following steps:
s1, taking polyamide, nylon elastomer, modified toughening agent, halogen-free flame retardant, flame retardant synergist, reinforcing fiber, antioxidant and toner according to parts by weight for standby;
s2, premixing polyamide and 0.1 part of diffusion oil in a high-speed mixer for 2min, mixing the polyamide with other raw materials for 2min, discharging, extruding and granulating by a double-screw extruder, wherein the processing temperatures of each section of the double-screw extruder from a feeding section are respectively as follows: 200 ℃, 240 ℃ and 240 ℃, 245 ℃, the temperature of the machine head is 240 ℃, the rotating speed of the screw rod is 360r/min, and the super-tough flame-retardant nylon composite material is prepared.
Example 2
A super-tough flame-retardant nylon composite material comprises the following raw materials in parts by weight:
the intrinsic viscosity of the polyamide was 2.7dL/g; the polyamide is PA56.
The nylon elastomer is polyether block polyamide Pebax5533sp 01.
The preparation method of each part of modified toughening agent comprises the following steps:
r1, taking 30 parts of SEBS-G-MAH, 10 parts of ethylene propylene diene monomer rubber, 5 parts of liquid halogen-free flame retardant and 5 parts of filling oil according to parts by weight for standby;
r2, mixing ethylene propylene diene monomer, a liquid halogen-free flame retardant and filling oil, and adding SEBS-G-MAH for blending to obtain a blend;
and R3, banburying the blend at 175 ℃ for 20min, and then extruding and granulating to obtain the modified toughening agent.
The SEBS-G-MAH is selected from G-1650; the Mooney viscosity [ ML (1+4) 125 ℃ C. ] of the ethylene propylene diene monomer is 45, and the ethylene content is 50%; the liquid halogen-free flame retardant is bisphenol A bis (diphenyl phosphate); the filling oil is industrial white oil.
The halogen-free flame retardant is diethyl aluminum phosphinate.
The flame retardant synergist is an MPP flame retardant.
The reinforcing fiber is glass fiber, and the chopped length of the reinforcing fiber is 2.5mm; the antioxidant is antioxidant S9228T.
The preparation method of the super-tough flame-retardant nylon composite material comprises the following steps:
s1, taking polyamide, nylon elastomer, modified toughening agent, halogen-free flame retardant, flame retardant synergist, reinforcing fiber, antioxidant and toner according to parts by weight for standby;
s2, premixing polyamide and 0.1 part of diffusion oil in a high-speed mixer for 1min, mixing with other raw materials for 1min, discharging, extruding and granulating by a double-screw extruder, wherein the processing temperatures of each section of the double-screw extruder from a feeding section are respectively as follows: 190 ℃, 230 ℃, 250 ℃, 230 ℃, 245 ℃, 235 ℃, 250 ℃, the temperature of the machine head is 230 ℃, and the rotating speed of the screw is 320r/min, thus preparing the super-tough flame-retardant nylon composite material.
Example 3
A super-tough flame-retardant nylon composite material comprises the following raw materials in parts by weight:
the intrinsic viscosity of the polyamide is 3.2dL/g; the polyamide is PA6.
The nylon elastomer is polyether block polyamide MH1657.
The preparation method of each part of modified toughening agent comprises the following steps:
r1, 50 parts of SEBS-G-MAH, 20 parts of ethylene propylene diene monomer rubber, 10 parts of liquid halogen-free flame retardant and 10 parts of filling oil are taken according to parts by weight for standby;
r2, mixing ethylene propylene diene monomer, a liquid halogen-free flame retardant and filling oil, and adding SEBS-G-MAH for blending to obtain a blend;
r3, banburying the blend at 185 ℃ for 30min, and then extruding and granulating to obtain the modified toughening agent.
The SEBS-G-MAH is selected from FG-1091; the Mooney viscosity (ML (1+4) 125 ℃) of the ethylene propylene diene monomer is 55, and the ethylene content is 60%; the liquid halogen-free flame retardant is resorcinol bis (diphenyl phosphate); the filling oil is industrial white oil.
The halogen-free flame retardant is diethyl aluminum phosphinate.
The flame retardant synergist is polyphenyl methyl siloxane.
The reinforcing fibers are carbon fibers, and the chopped length of the reinforcing fibers is 2.8mm; the antioxidant is antioxidant S-680.
The preparation method of the super-tough flame-retardant nylon composite material comprises the following steps:
s1, taking polyamide, nylon elastomer, modified toughening agent, halogen-free flame retardant, flame retardant synergist, reinforcing fiber, antioxidant and toner according to parts by weight for standby;
s2, premixing polyamide and 0.1 part of diffusion oil in a high-speed mixer for 3min, mixing the polyamide with other raw materials for 3min, discharging, extruding and granulating by a double-screw extruder, wherein the processing temperatures of each section of the double-screw extruder from a feeding section are respectively as follows: 210 ℃, 250 ℃, 230 ℃, 250 ℃, 245 ℃, 235 ℃, 245 ℃, 250 ℃, the temperature of the machine head is 250 ℃, and the rotating speed of the screw is 400r/min, thus preparing the super-tough flame-retardant nylon composite material.
Example 4
A super-tough flame-retardant nylon composite material comprises the following raw materials in parts by weight:
the intrinsic viscosity of the polyamide was 2.9dL/g; the polyamide is PA66.
The nylon elastomer is polyether block polyamide Pebax 35r53 sp01.
The preparation method of each part of modified toughening agent comprises the following steps:
r1, 45 parts of SEBS-G-MAH, 18 parts of ethylene propylene diene monomer rubber, 6 parts of liquid halogen-free flame retardant and 6 parts of filling oil are taken according to parts by weight for standby;
r2, mixing ethylene propylene diene monomer, a liquid halogen-free flame retardant and filling oil, and adding SEBS-G-MAH for blending to obtain a blend;
and R3, banburying the blend at 182 ℃ for 28min, and then extruding and granulating to obtain the modified toughening agent.
The SEBS-G-MAH is selected from FG-1091; the Mooney viscosity [ ML (1+4) 125 ℃ C. ] of the ethylene propylene diene monomer is 52, and the ethylene content is 54%; the liquid halogen-free flame retardant is resorcinol bis (diphenyl phosphate); the filling oil is industrial white oil.
The halogen-free flame retardant is diethyl aluminum phosphinate.
The flame retardant synergist is an MCA flame retardant.
The reinforcing fibers are carbon fibers, and the chopped length of the reinforcing fibers is 2.6mm; the antioxidant is antioxidant 1076.
The preparation method of the super-tough flame-retardant nylon composite material comprises the following steps:
s1, taking polyamide, nylon elastomer, modified toughening agent, halogen-free flame retardant, flame retardant synergist, reinforcing fiber, antioxidant and toner according to parts by weight for standby;
s2, premixing polyamide and 0.1 part of diffusion oil in a high-speed mixer for 2min, mixing the polyamide with other raw materials for 2min, discharging, extruding and granulating by a double-screw extruder, wherein the processing temperatures of each section of the double-screw extruder from a feeding section are respectively as follows: 200 ℃, 210 ℃, 240 ℃, 245 ℃, 240 ℃, 235 ℃, 245 ℃, 240 ℃, 245 ℃, and the temperature of a machine head at 240 ℃ and the rotating speed of a screw rod at 360r/min, thereby preparing the super-tough flame-retardant nylon composite material.
Comparative example 1
The difference between this comparative example and example 1 is that:
the modified toughening agent is replaced by EPDM-g-MAH and is selected from FUSABOND N416.
Comparative example 2
The difference between this comparative example and example 1 is that:
the modified toughening agent is replaced by SEBS-G-MAH and is selected from G-1650.
Comparative example 3
The difference between this comparative example and example 1 is that:
the super-tough flame-retardant nylon composite material comprises the following raw materials in parts by weight:
comparative example 4
The difference between this comparative example and example 1 is that:
the super-tough flame-retardant nylon composite material comprises the following raw materials in parts by weight:
the preparation method of each part of modified toughening agent comprises the following steps:
r1, 40 parts of SEBS-G-MAH, 15 parts of ethylene propylene diene monomer rubber and 8 parts of filling oil in parts by weight for standby;
r2, mixing ethylene propylene diene monomer and filling oil, and adding SEBS-G-MAH for blending to obtain a blend;
r3, banburying the blend at 180 ℃ for 25min, and then extruding and granulating to obtain the modified toughening agent.
The preparation method of the super-tough flame-retardant nylon composite material comprises the following steps:
s1, taking polyamide, nylon elastomer, modified toughening agent, halogen-free flame retardant, flame retardant synergist, reinforcing fiber, antioxidant and toner according to parts by weight for standby;
s2, premixing polyamide and 0.1 part of diffusion oil in a high-speed mixer for 2min, mixing the polyamide with other raw materials for 2min, discharging, extruding and granulating by a double-screw extruder, wherein the processing temperatures of each section of the double-screw extruder from a feeding section are respectively as follows: 200 ℃, 240 ℃ and 240 ℃, 245 ℃, the temperature of the machine head is 240 ℃, the rotating speed of the screw rod is 360r/min, and the super-tough flame-retardant nylon composite material is prepared.
Performance testing
Taking super-tough flame-retardant nylon composite materials of examples 1-4 and comparative examples 1-4, and respectively testing the notch impact strength, the low-temperature notch impact strength, the tensile strength, the elongation at break, the bending strength and the bending modulus;
the test results are shown in table 1 below:
TABLE 1
As can be seen from the table 1, the super-tough flame-retardant nylon composite material takes polyamide as a main raw material, and nylon elastomer, a modified toughening agent, a halogen-free flame retardant, a flame-retardant synergist, reinforcing fibers, an antioxidant and toner are added to achieve a V0-level flame-retardant effect, in addition, the special modified toughening agent, the nylon elastomer and the reinforcing fibers are adopted to cooperate and cooperate to remarkably improve the toughness and low temperature resistance of the composite material, the better strength is maintained, the problems that the production and blanking are difficult and the material is blocked due to the large addition of the flame retardant are avoided, and the better strength and toughness cannot be maintained due to the large influence of the performance of the material; the super-tough flame-retardant nylon composite material is more suitable for manufacturing protective clothing such as bulletproof clothing, explosion-proof clothing and the like, has higher penetration resistance requirements on materials, is often added with a brominated flame retardant or a red phosphorus flame retardant, has high specific gravity, is not environment-friendly, is easy to separate out and is easy to lose efficacy, the toughness of common materials is reduced at a low temperature (-40 ℃), and the protective effect of the protective clothing in a relatively cold environment is greatly reduced. Wherein example 1 uses a special modified toughening agent to significantly vary the toughness and flexural modulus of the composite material compared to comparative examples 1 and 2; comparative example 3 uses too much halogen-free flame retardant compared to example 1, which is detrimental to the toughness of the composite; compared with comparative example 4, the liquid halogen-free flame retardant is filled in the preparation process by adopting the special modified toughening agent in example 1, which greatly contributes to the flame retardant effect.
The above embodiments are preferred embodiments of the present invention, and besides, the present invention may be implemented in other ways, and any obvious substitution is within the scope of the present invention without departing from the concept of the present invention.
Claims (9)
1. A super-tough flame-retardant nylon composite material is characterized in that: the material comprises the following raw materials in parts by weight:
the preparation method of each part of modified toughening agent comprises the following steps:
r1, taking 30-50 parts by weight of SEBS-G-MAH, 10-20 parts by weight of ethylene propylene diene monomer, 5-10 parts by weight of liquid halogen-free flame retardant and 5-10 parts by weight of filling oil for standby;
r2, mixing ethylene propylene diene monomer, a liquid halogen-free flame retardant and filling oil, and adding SEBS-G-MAH for blending to obtain a blend;
r3, banburying the blend at 175-185 ℃ for 20-30min, and then extruding and granulating to obtain the modified toughening agent.
2. The super-tough flame-retardant nylon composite material according to claim 1, wherein: the intrinsic viscosity of the polyamide is 2.7-3.2dL/g; the polyamide is at least one of PA66, PA56 and PA6.
3. The super-tough flame-retardant nylon composite material according to claim 1, wherein: the nylon elastomer is polyether block polyamide, and the melting temperature of the polyether block polyamide is 135-204 ℃.
4. The super-tough flame-retardant nylon composite material according to claim 1, wherein: the SEBS-G-MAH is selected from G-1650 or FG-1091; the Mooney viscosity (ML (1+4) 125 ℃) of the ethylene propylene diene monomer is 45-55, and the ethylene content is 50-60%; the liquid halogen-free flame retardant is resorcinol bis (diphenyl phosphate) and/or bisphenol A bis (diphenyl phosphate); the filling oil is industrial white oil.
5. The super-tough flame-retardant nylon composite material according to claim 1, wherein: the halogen-free flame retardant is diethyl aluminum phosphinate or diethyl magnesium phosphinate.
6. The super-tough flame-retardant nylon composite material according to claim 1, wherein: the flame retardant synergist is at least one of an MCA flame retardant, an MPP flame retardant, an organosilicon flame retardant and a polyphosphite flame retardant.
7. The super-tough flame-retardant nylon composite according to claim 6, wherein: the organic silicon flame retardant is at least one of polyphenyl methyl siloxane, polyphenyl silsesquioxane and phenol end group dimethyl siloxane; the polyphosphite flame retardant is zinc polyphosphite or aluminum polyphosphite.
8. The super-tough flame-retardant nylon composite material according to claim 1, wherein: the reinforcing fiber is glass fiber or carbon fiber, and the chopped length of the reinforcing fiber is 2.5-2.8mm; the antioxidant is hydrolysis-resistant antioxidant.
9. A method for preparing the super-tough flame-retardant nylon composite material according to any one of claims 1 to 8, comprising the following steps:
s1, taking polyamide, nylon elastomer, modified toughening agent, halogen-free flame retardant, flame retardant synergist, reinforcing fiber, antioxidant and toner according to parts by weight for standby;
s2, premixing polyamide and 0.1 part of diffusion oil in a high-speed mixer for 1-3min, mixing with other raw materials for 1-3min, discharging, extruding and granulating by a double-screw extruder, wherein the processing temperatures of each section of the double-screw extruder from a feeding section are respectively as follows: 190-210 ℃, 230-250 ℃ and 235-245 ℃, 240-250 ℃, the temperature of the machine head is 230-250 ℃, the rotating speed of the screw is 320-400r/min, and the super-tough flame-retardant nylon composite material is prepared.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210787949.5A CN115044199B (en) | 2022-07-04 | 2022-07-04 | Super-tough flame-retardant nylon composite material and preparation method thereof |
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| CN202210787949.5A CN115044199B (en) | 2022-07-04 | 2022-07-04 | Super-tough flame-retardant nylon composite material and preparation method thereof |
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| CN115044199A CN115044199A (en) | 2022-09-13 |
| CN115044199B true CN115044199B (en) | 2023-07-28 |
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| CN108570227A (en) * | 2017-09-14 | 2018-09-25 | 山东科华赛邦新材料股份有限公司 | A kind of low temperature resistant ultra-toughness halogen-free reinforced nylon alloy and preparation method thereof |
| CN110615987B (en) * | 2019-10-15 | 2022-08-16 | 山东省科学院能源研究所 | Halogen-free flame-retardant toughened nylon and preparation method and application thereof |
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