CN113429779A - Reinforced and toughened blending modified PA6/MXD6 composite material and preparation method thereof - Google Patents
Reinforced and toughened blending modified PA6/MXD6 composite material and preparation method thereof Download PDFInfo
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- CN113429779A CN113429779A CN202110785645.0A CN202110785645A CN113429779A CN 113429779 A CN113429779 A CN 113429779A CN 202110785645 A CN202110785645 A CN 202110785645A CN 113429779 A CN113429779 A CN 113429779A
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- 101000576320 Homo sapiens Max-binding protein MNT Proteins 0.000 title claims abstract description 54
- 229920006121 Polyxylylene adipamide Polymers 0.000 title claims abstract description 54
- 239000002131 composite material Substances 0.000 title claims abstract description 33
- 238000002156 mixing Methods 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 229920005989 resin Polymers 0.000 claims abstract description 38
- 239000011347 resin Substances 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 33
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 21
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 20
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 19
- 239000012745 toughening agent Substances 0.000 claims abstract description 18
- 239000000314 lubricant Substances 0.000 claims abstract description 13
- 229920002748 Basalt fiber Polymers 0.000 claims abstract description 10
- 229920006342 thermoplastic vulcanizate Polymers 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 239000004677 Nylon Substances 0.000 claims description 7
- 229920001778 nylon Polymers 0.000 claims description 7
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 6
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- FDLQZKYLHJJBHD-UHFFFAOYSA-N [3-(aminomethyl)phenyl]methanamine Chemical compound NCC1=CC=CC(CN)=C1 FDLQZKYLHJJBHD-UHFFFAOYSA-N 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000001361 adipic acid Substances 0.000 claims description 3
- 235000011037 adipic acid Nutrition 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical group CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 claims description 3
- 150000008301 phosphite esters Chemical class 0.000 claims description 3
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 3
- 238000006068 polycondensation reaction Methods 0.000 claims description 3
- 229920006012 semi-aromatic polyamide Polymers 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 2
- 238000013329 compounding Methods 0.000 claims 1
- 229920001971 elastomer Polymers 0.000 abstract description 6
- 230000004888 barrier function Effects 0.000 abstract description 5
- 229920001169 thermoplastic Polymers 0.000 abstract description 5
- 239000004416 thermosoftening plastic Substances 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 239000000806 elastomer Substances 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 230000004048 modification Effects 0.000 abstract description 3
- 238000012986 modification Methods 0.000 abstract description 3
- 239000002861 polymer material Substances 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 8
- 239000004952 Polyamide Substances 0.000 description 6
- 229920002647 polyamide Polymers 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 239000003365 glass fiber Substances 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- -1 poly m-xylylene adipamide Chemical compound 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 2
- 229920006351 engineering plastic Polymers 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- UBAZGMLMVVQSCD-UHFFFAOYSA-N carbon dioxide;molecular oxygen Chemical compound O=O.O=C=O UBAZGMLMVVQSCD-UHFFFAOYSA-N 0.000 description 1
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- 230000007774 longterm Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
- C08J5/043—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with glass fibres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
- C08J2377/02—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
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2433/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2477/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2477/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
- C08J2477/06—Polyamides derived from polyamines and polycarboxylic 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
Abstract
The invention belongs to the field of processing of high polymer materials, and discloses a reinforced and toughened blending modified PA6/MXD6 composite material and a preparation method thereof. The reinforced and toughened blending modified PA6/MXD6 composite material comprises, by weight, 28-35 parts of PA6 resin, 20-25 parts of MXD6 resin, 0-7 parts of a toughening agent, 40-45 parts of a reinforcing agent, 0.2-0.5 part of an antioxidant and 0.2-0.5 part of a lubricant. The material is characterized in that the material is prepared by taking PA6 and MXD6 resins as base materials, selecting Continuous Basalt Fiber (CBF) as a reinforcing agent and a thermoplastic vulcanized elastomer (PA/ACMTPV) as a toughening agent for blending modification aiming at the mechanical property characteristics of the PA6 material and combining the characteristics of high rigidity, high modulus and excellent barrier property of the MXD6 material, increasing the barrier property and reducing the water absorption rate of the PA6 material while improving the mechanical property of the PA6 material, and aiming at the characteristic of insufficient toughness of the PA6 material.
Description
Technical Field
The invention relates to the field of processing of high polymer materials, in particular to a reinforced and toughened blending modified PA6/MXD6 composite material and a preparation method thereof.
Background
Polyamide is widely used worldwide as the first general-purpose thermoplastic engineering plastic to realize industrialization. The demand of polyamide is still high among five kinds of engineering plastics until now because of its excellent properties such as toughness, abrasion resistance, impact resistance, and fatigue resistance.
The PA6 is an important variety in polyamide materials, has the characteristics of toughness, wear resistance, self lubrication, wide use temperature range and the like, has good market and technical basis for PA6 products in the tool market, and has larger development space although the overall market share is lower. MXD6 (poly m-xylylene adipamide) is a crystalline semi-aromatic special nylon resin, which can keep the performance characteristics of high strength and high rigidity in a wide temperature range, has low water absorption in nylon materials, small dimensional change after water absorption, less reduction of mechanical strength, and excellent barrier property for gases such as oxygen, carbon dioxide and the like, and the excellent characteristics determine the wide application prospect, so that more intensive research can be carried out.
The glass fiber reinforced polyamide PA6 material has long-term application in various tool shells due to excellent performances such as high strength, high toughness and the like, but the strength of the material also has an upper limit. The prior patent application CN110951249A discloses an MXD6 resin alloy engineering material with high rigidity and high toughness, which is characterized in that the hardness of MXD6 resin is synergistically enhanced by mutual crosslinking of modified metal fibers and chopped glass fibers, so that the potential safety hazard is eliminated by adding various additives in the modification process of MXD6 resin, but the tensile strength of the material is improved to a limited extent, and the impact performance cannot be considered at the same time.
Disclosure of Invention
The invention aims to overcome the defects of the background technology and provides a reinforced and toughened blending modified PA6/MXD6 composite material and a preparation method thereof. According to the invention, aiming at the characteristics of mechanical properties of the PA6 material, the characteristics of high rigidity, high modulus and excellent barrier property of the MXD6 material are combined, the mechanical properties of the PA6 material are improved, the barrier property is increased, the water absorption is reduced, the characteristic of insufficient toughness is further researched, the PA6 and MXD6 resins are used as base materials, the continuous basalt fiber CBF is used as a reinforcing agent, the thermoplastic vulcanized elastomer PA/ACM TPV is used as a toughening agent for blending modification, and the obtained composite material has excellent rigidity and impact resistance.
In order to achieve the purpose of the invention, the reinforced and toughened blending modified PA6/MXD6 composite material comprises, by weight, 28-35 parts of PA6 resin, 20-25 parts of MXD6 resin, 0-7 parts of a toughening agent, 40-45 parts of a reinforcing agent, 0.2-0.5 part of an antioxidant and 0.2-0.5 part of a lubricant.
Preferably, in some embodiments of the invention, the reinforced and toughened blending modified PA6/MXD6 composite material comprises, by weight, 28-35 parts of PA6 resin, 20-25 parts of MXD6 resin, 5-7 parts of a toughening agent, 40-45 parts of a reinforcing agent, 0.2-0.5 part of an antioxidant and 0.2-0.5 part of a lubricant.
Further, in some embodiments of the present invention, the PA6 resin has a viscosity of 1.9 to 2.0.
Further, in some embodiments of the present invention, the MXD6 resin is a crystalline semi-aromatic nylon, a nylon material formed by polycondensation of m-xylylenediamine and adipic acid.
Further, in some embodiments of the invention, the reinforcing agent is a Continuous Basalt Fiber (CBF) having a fiber tensile strength of 3000 and 4840 MPa.
Preferably, in some embodiments of the invention, the continuous basalt fibers are added in the PA6/MXD6 composite in a mass fraction of 38-45%.
Further, in some embodiments of the present invention, the toughening agent is a thermoplastic vulcanizate PA/ACM TPV, which is prepared from a polyamide, an acrylate rubber (ACM), as a matrix resin, using a dynamic vulcanization process.
Preferably, in some embodiments of the present invention, the toughening agent is added in a mass fraction of 5 to 8%.
Further, in some embodiments of the present invention, the antioxidant is a hindered phenol and phosphite built system.
Preferably, in some embodiments of the present invention, the ratio of the hindered phenol antioxidant to the phosphite antioxidant in the antioxidants is 1: 1-3.
Further, in some embodiments of the present invention, the lubricant is ethylene bis stearamide.
In another aspect, the invention also provides a preparation method of the reinforced and toughened blending modified PA6/MXD6 composite material, which comprises the following steps:
(1) weighing the needed PA6 resin, MXD6 resin, toughening agent, reinforcing agent, antioxidant and lubricant for later use;
(2) adding the PA6 resin and the MXD6 resin into a stirrer after dehumidifying and drying in a drying oven at 120-130 ℃ for 3-4 hours, and uniformly stirring with a toughening agent, an antioxidant and a lubricant;
(3) and (3) placing the mixed material obtained in the step (2) into a co-rotating double-screw extruder, and carrying out melt plasticizing, extrusion, cooling and grain cutting to obtain the reinforced and toughened blending modified PA6/MXD6 composite material, wherein the reinforcing agent is added in a side feeding manner in the extrusion section process.
Further, in some embodiments of the present invention, the co-rotating twin screw extruder has a screw diameter of 40 to 65mm, a screw length to diameter ratio of 40: 1, setting the melting and plasticizing temperatures after blending as follows:
temperature in the first zone: 245 ℃ to 250 ℃, temperature in zone two: 250 ℃ to 260 ℃, three zone temperature: 255 ℃ to 260 ℃, four zone temperature: 250 ℃ to 255 ℃, five zone temperatures: 245 ℃ to 250 ℃, six zone temperature: 245 ℃ to 250 ℃, temperature in seven zones: 245 ℃ to 250 ℃, eight zone temperature: 245 ℃ to 250 ℃, nine zone temperature: 250 ℃ to 255 ℃, ten zone temperature: 250 ℃ to 255 ℃, melt temperature: 250-255 ℃, head temperature: 255-260 ℃.
Compared with the prior art, the invention has the following advantages:
(1) the MXD6 (poly m-xylylene adipamide) is a crystalline semi-aromatic special nylon resin which can keep the performance characteristics of high strength and high rigidity in a wide temperature range;
(2) the MXD6 resin is selected to be blended and modified with PA6 resin, the PA6 resin is combined with a reinforcing agent continuous basalt fiber in a composite system, and a toughening agent thermoplastic vulcanized elastomer PA/ACM TPV with a certain proportion is compounded, so that the composite material has better physical rigidity and impact resistance.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention. It is to be understood that the following description is only illustrative of the present invention and is not to be construed as limiting the present invention.
The terms "comprises," "comprising," "includes," "including," "has," "having," "contains," "containing," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.
When an amount, concentration, or other value or parameter is expressed as a range, preferred range, or as a range of upper preferable values and lower preferable values, this is to be understood as specifically disclosing all ranges formed from any pair of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether ranges are separately disclosed. For example, when a range of "1 to 5" is disclosed, the described range should be interpreted to include the ranges "1 to 4", "1 to 3", "1 to 2 and 4 to 5", "1 to 3 and 5", and the like. When a range of values is described herein, unless otherwise stated, the range is intended to include the endpoints thereof and all integers and fractions within the range.
The indefinite articles "a" and "an" preceding an element or component of the invention are not intended to limit the number requirement (i.e., the number of occurrences) of the element or component. Thus, "a" or "an" should be read to include one or at least one, and the singular form of an element or component also includes the plural unless the number clearly indicates the singular.
Furthermore, the description below of the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily for the same embodiment or example. Further, the technical features of the embodiments of the present invention may be combined with each other as long as they do not conflict with each other.
Example 1
The reinforced and toughened blending modified PA6/MXD6 composite material comprises the following components in parts by weight (see Table 1 specifically):
wherein the PA6 resin is one of a number of grades having a viscosity between 1.9 and 2.0; the MXD6 resin is a crystalline semi-aromatic nylon, and is a special nylon material prepared by polycondensation of m-xylylenediamine and adipic acid; the reinforcing agent is a Continuous Basalt Fiber (CBF), and the tensile strength of the fiber is 3000-4840 MPa; the toughening agent is polyamide, acrylate rubber (ACM) is matrix resin, and a thermoplastic vulcanized elastomer PA/ACM TPV is prepared by adopting a dynamic vulcanization process; the antioxidant is compounded by hindered phenol and phosphite ester, wherein the mass fraction ratio of the hindered phenol antioxidant to the phosphite ester antioxidant is 1: 2; the lubricant is ethylene bis stearamide.
Specifically, the components and their contents in examples 1 to 4 and comparative examples 1 to 3 are shown in Table 1.
TABLE 1 specific formulations (in kilograms) of materials for examples 1-3 and comparative examples 1-3
The materials of examples 1-4 and comparative examples 1-3 were prepared as follows:
(1) adding PA6 resin and MXD6 resin into a stirrer after dehumidifying and drying in a drying oven at 125 ℃ for 3.5 hours, and uniformly stirring with the components such as a flexibilizer, an antioxidant, a lubricant and the like (the specifically added materials and the weight parts thereof are based on Table 1);
(2) placing the mixed materials in a co-rotating double-screw extruder, adding continuous basalt fiber reinforced filler in an extrusion section process in a side feeding mode, and performing melt plasticizing, extrusion, cooling and grain cutting to obtain the reinforced and toughened blending modified PA6/MXD6 composite material, wherein the diameter of a screw of the used double-screw extruder is 40-65mm, and the length-diameter ratio of the screw is 40: 1, the melting point of the special nylon polyhexamethylene meta-xylylenediamine MXD6 is 10-20 ℃ higher than that of PA6, and the melting and plasticizing temperatures after blending are set as follows:
temperature in the first zone: 245 ℃ to 250 ℃, temperature in zone two: 250 ℃ to 260 ℃, three zone temperature: 255 ℃ to 260 ℃, four zone temperature: 250 ℃ to 255 ℃, five zone temperatures: 245 ℃ to 250 ℃, six zone temperature: 245 ℃ to 250 ℃, temperature in seven zones: 245 ℃ to 250 ℃, eight zone temperature: 245 ℃ to 250 ℃, nine zone temperature: 250 ℃ to 255 ℃, ten zone temperature: 250 ℃ to 255 ℃, melt temperature: 250-255 ℃, head temperature: 255-260 ℃.
The PA6/MXD6 composite materials obtained in the examples and the comparative examples were subjected to injection molding after being dried in an oven at 120 ℃ to obtain sample pieces, and the injection molding temperature was as follows:
a blanking section: 250 ℃; and a second stage: 255 ℃; a third stage: 255 ℃; a nozzle: 260 ℃;
and finally, placing the injection molding sample wafer in a dryer for state adjustment: adjusting the temperature to 23 ℃, and adjusting the time: and (5) 24 h.
The results of the performance tests on the materials of the examples and comparative examples are shown in table 2 below.
Table 2 results of property test of materials of examples and comparative examples
As can be seen from the test results of examples 1-4: in a composite system added with continuous basalt fibers, the addition amount of the CBF reinforcing agent is different, the rigidity and the impact strength are different, the content of the CBF reinforcing agent is increased, the rigidity strength is improved, and the rigidity reduction range is low even if the addition amount of the toughening agent is increased. Considering the balance between the rigidity and the impact strength of the material, the mass fraction of the CBF reinforcing agent in the PA6/MXD6 composite material of the present invention is preferably around 40%, for example 38-45%, and as a further example 38-42%.
As can be seen from the test results of example 3 and comparative example 3, the addition of the same reinforcing agent, toughening agent content and MXD6 can greatly improve the rigidity and the strength of the material. As can be seen from the test results of example 1 and example 2, the impact strength of the thermoplastic vulcanizate PA/ACM TPV is significantly increased after the addition. As can be seen from the test results of the example 3 and the comparative example 2, compared with the common glass fiber, the PA6/MXD6 composite system added with the CBF reinforcing agent has more obvious advantages in comprehensive physical properties, better stability of the material properties and wider market application range.
It will be understood by those skilled in the art that the foregoing is only exemplary of the present invention, and is not intended to limit the invention, which is intended to cover any variations, equivalents, or improvements therein, which fall within the spirit and scope of the invention.
Claims (10)
1. The reinforced and toughened blending modified PA6/MXD6 composite material is characterized by comprising, by weight, 28-35 parts of PA6 resin, 20-25 parts of MXD6 resin, 0-7 parts of a toughening agent, 40-45 parts of a reinforcing agent, 0.2-0.5 part of an antioxidant and 0.2-0.5 part of a lubricant.
2. The reinforced and toughened blending modified PA6/MXD6 composite material as claimed in claim 1, wherein the reinforced and toughened blending modified PA6/MXD6 composite material comprises, by weight, 28-35 parts of PA6 resin, 20-25 parts of MXD6 resin, 5-7 parts of toughening agent, 40-45 parts of reinforcing agent, 0.2-0.5 part of antioxidant and 0.2-0.5 part of lubricant.
3. The reinforced toughened blended modified PA6/MXD6 composite material as claimed in claim 1 or 2, wherein the PA6 resin has a viscosity of 1.9-2.0.
4. The reinforced and toughened blend modified PA6/MXD6 composite material as claimed in claim 1 or claim 2, wherein the MXD6 resin is a crystalline semi-aromatic nylon, a nylon material prepared by polycondensation of m-xylylenediamine and adipic acid.
5. The reinforced and toughened blending modified PA6/MXD6 composite material as claimed in claim 1 or 2, wherein the reinforcing agent is a continuous basalt fiber with a fiber tensile strength of 3000-4840 MPa; preferably, the continuous basalt fiber is added into the PA6/MXD6 composite material in a mass fraction of 38-45%.
6. The reinforced toughened blended modified PA6/MXD6 composite material as claimed in claim 1 or 2, wherein the toughening agent is thermoplastic vulcanizate PA/ACM TPV.
7. The reinforced and toughened blending modified PA6/MXD6 composite material as claimed in claim 1 or 2, wherein the antioxidant is a hindered phenol and phosphite ester compounding system; preferably, the mass fraction ratio of the hindered phenol antioxidant to the phosphite antioxidant in the antioxidants is 1: 1-3.
8. The reinforced toughened, blended and modified PA6/MXD6 composite material according to claim 1 or 2, wherein the lubricant is ethylene bis stearamide.
9. The preparation method of the reinforced and toughened PA6/MXD6 composite material as claimed in any one of claims 1-8, wherein the preparation method comprises the following steps:
(1) weighing the needed PA6 resin, MXD6 resin, toughening agent, reinforcing agent, antioxidant and lubricant for later use;
(2) adding the PA6 resin and the MXD6 resin into a stirrer after dehumidifying and drying in a drying oven at 120-130 ℃ for 3-4 hours, and uniformly stirring with a toughening agent, an antioxidant and a lubricant;
(3) and (3) placing the mixed material obtained in the step (2) into a co-rotating double-screw extruder, and carrying out melt plasticizing, extrusion, cooling and grain cutting to obtain the reinforced and toughened blending modified PA6/MXD6 composite material, wherein the reinforcing agent is added in a side feeding manner in the extrusion section process.
10. The preparation method of the reinforced and toughened blending modified PA6/MXD6 composite material as claimed in claim 9, wherein the diameter of the screw of the co-rotating twin-screw extruder is 40-65mm, the length-diameter ratio of the screw is 40: 1, setting the melting and plasticizing temperatures after blending as follows:
temperature in the first zone: 245 ℃ to 250 ℃, temperature in zone two: 250 ℃ to 260 ℃, three zone temperature: 255 ℃ to 260 ℃, four zone temperature: 250 ℃ to 255 ℃, five zone temperatures: 245 ℃ to 250 ℃, six zone temperature: 245 ℃ to 250 ℃, temperature in seven zones: 245 ℃ to 250 ℃, eight zone temperature: 245 ℃ to 250 ℃, nine zone temperature: 250 ℃ to 255 ℃, ten zone temperature: 250 ℃ to 255 ℃, melt temperature: 250-255 ℃, head temperature: 255-260 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110785645.0A CN113429779A (en) | 2021-07-12 | 2021-07-12 | Reinforced and toughened blending modified PA6/MXD6 composite material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110785645.0A CN113429779A (en) | 2021-07-12 | 2021-07-12 | Reinforced and toughened blending modified PA6/MXD6 composite material and preparation method thereof |
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| CN113429779A true CN113429779A (en) | 2021-09-24 |
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| CN202110785645.0A Pending CN113429779A (en) | 2021-07-12 | 2021-07-12 | Reinforced and toughened blending modified PA6/MXD6 composite material and preparation method thereof |
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