CN117659686A - Nylon composite material and preparation method and application thereof - Google Patents
Nylon composite material and preparation method and application thereof Download PDFInfo
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- CN117659686A CN117659686A CN202311620820.6A CN202311620820A CN117659686A CN 117659686 A CN117659686 A CN 117659686A CN 202311620820 A CN202311620820 A CN 202311620820A CN 117659686 A CN117659686 A CN 117659686A
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- nylon composite
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- plasticizer
- inorganic metal
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- 239000004677 Nylon Substances 0.000 title claims abstract description 67
- 229920001778 nylon Polymers 0.000 title claims abstract description 67
- 239000002131 composite material Substances 0.000 title claims abstract description 63
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000004014 plasticizer Substances 0.000 claims abstract description 37
- 239000011347 resin Substances 0.000 claims abstract description 36
- 229920005989 resin Polymers 0.000 claims abstract description 36
- KHBQMWCZKVMBLN-UHFFFAOYSA-N Benzenesulfonamide Chemical compound NS(=O)(=O)C1=CC=CC=C1 KHBQMWCZKVMBLN-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910052751 metal Inorganic materials 0.000 claims abstract description 29
- 239000002184 metal Substances 0.000 claims abstract description 29
- 150000003839 salts Chemical class 0.000 claims abstract description 29
- 230000001681 protective effect Effects 0.000 claims abstract description 9
- 239000012745 toughening agent Substances 0.000 claims abstract description 5
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 15
- 239000003963 antioxidant agent Substances 0.000 claims description 12
- 230000003078 antioxidant effect Effects 0.000 claims description 9
- IPRJXAGUEGOFGG-UHFFFAOYSA-N N-butylbenzenesulfonamide Chemical compound CCCCNS(=O)(=O)C1=CC=CC=C1 IPRJXAGUEGOFGG-UHFFFAOYSA-N 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 6
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 claims description 6
- 239000000314 lubricant Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 6
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 5
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 4
- 239000001110 calcium chloride Substances 0.000 claims description 4
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 239000011592 zinc chloride Substances 0.000 claims description 3
- 235000005074 zinc chloride Nutrition 0.000 claims description 3
- 229920002943 EPDM rubber Polymers 0.000 claims description 2
- 159000000007 calcium salts Chemical class 0.000 claims description 2
- 229910003002 lithium salt Inorganic materials 0.000 claims description 2
- 159000000002 lithium salts Chemical class 0.000 claims description 2
- 229910001507 metal halide Inorganic materials 0.000 claims description 2
- 150000005309 metal halides Chemical group 0.000 claims description 2
- ONGMSIYISVEKDB-UHFFFAOYSA-N n-octylbenzenesulfonamide Chemical compound CCCCCCCCNS(=O)(=O)C1=CC=CC=C1 ONGMSIYISVEKDB-UHFFFAOYSA-N 0.000 claims description 2
- XAUGWFWQVYXATQ-UHFFFAOYSA-N n-phenylbenzenesulfonamide Chemical compound C=1C=CC=CC=1S(=O)(=O)NC1=CC=CC=C1 XAUGWFWQVYXATQ-UHFFFAOYSA-N 0.000 claims description 2
- 150000003751 zinc Chemical class 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 230000000052 comparative effect Effects 0.000 description 24
- 239000000463 material Substances 0.000 description 10
- 238000009472 formulation Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 229920002292 Nylon 6 Polymers 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 239000004952 Polyamide Substances 0.000 description 4
- 229920002521 macromolecule Polymers 0.000 description 4
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 4
- 229920002647 polyamide Polymers 0.000 description 4
- 150000001412 amines Chemical class 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- ZFOZVQLOBQUTQQ-UHFFFAOYSA-N Tributyl citrate Chemical compound CCCCOC(=O)CC(O)(C(=O)OCCCC)CC(=O)OCCCC ZFOZVQLOBQUTQQ-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 238000009863 impact test Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 230000004224 protection Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- WBWXVCMXGYSMQA-UHFFFAOYSA-N 3,9-bis[2,4-bis(2-phenylpropan-2-yl)phenoxy]-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane Chemical group C=1C=C(OP2OCC3(CO2)COP(OC=2C(=CC(=CC=2)C(C)(C)C=2C=CC=CC=2)C(C)(C)C=2C=CC=CC=2)OC3)C(C(C)(C)C=2C=CC=CC=2)=CC=1C(C)(C)C1=CC=CC=C1 WBWXVCMXGYSMQA-UHFFFAOYSA-N 0.000 description 1
- 239000004953 Aliphatic polyamide Substances 0.000 description 1
- 239000004609 Impact Modifier Substances 0.000 description 1
- 239000002841 Lewis acid Substances 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- -1 aliphatic diamine Chemical class 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 229920003231 aliphatic polyamide Polymers 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000010668 complexation reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012776 electronic material Substances 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 229920006150 hyperbranched polyester Polymers 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 150000007517 lewis acids Chemical class 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- OHPZPBNDOVQJMH-UHFFFAOYSA-N n-ethyl-4-methylbenzenesulfonamide Chemical compound CCNS(=O)(=O)C1=CC=C(C)C=C1 OHPZPBNDOVQJMH-UHFFFAOYSA-N 0.000 description 1
- 239000002530 phenolic antioxidant Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to a nylon composite material and a preparation method and application thereof. The nylon composite material comprises the following components: PA resin, toughening agent, benzenesulfonic acid amide plasticizer, inorganic metal salt and other auxiliary agents. The nylon composite material is added with benzenesulfonic acid amide plasticizer and specific inorganic metal salt, and has high elongation at break, high notch impact strength, low flexural modulus and low hardness. The nylon composite material is suitable for preparing products such as cable protective jackets.
Description
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a nylon composite material and a preparation method and application thereof.
Background
The nylon material has excellent performances such as good wear resistance, self-lubricating property, chemical corrosion resistance and the like, and is suitable for various molding processing methods such as injection molding, extrusion and the like, so that the nylon material is widely applied to the fields such as automobile engineering plastics, spinning, electric appliances, electronic materials and the like. Pure nylon materials also suffer from the disadvantages of being notch sensitive, large in hardness and the like, which also results in limited application. For example, the characteristics of wear resistance, chemical corrosion resistance and the like of nylon are suitable for being used as a cable sheath, but the cable sheath material has use requirements on flexibility, and the defects of notch sensitivity, high hardness and the like of the nylon material need to be overcome; for this reason, it is required to modify nylon materials to improve their elongation at break and notched impact resistance and to reduce their hardness, and in general, it is required that the elongation at break be not less than 150% and the notched impact strength be not less than 80KJ/m 2 The bending modulus is less than or equal to 500MPa, and the hardness is less than or equal to 70HD, so that the cable sheath is suitable for preparing.
Patent CN115594966a discloses a polyamide composite material, the components of which mainly comprise polyamide 6, long carbon chain aliphatic polyamide, impact modifier, hydroxybenzoate plasticizer and hyperbranched polyester with hydroxyl and carboxyl groups at the end groups, the obtained polyamide composite material has higher tensile fracture toughness, but still has higher crystallinity, so that the composite material still shows higher rigidity (flexural modulus) and hardness, and the flexibility is insufficient, and cannot meet the use requirement of a cable sheath.
For this reason, a nylon material having high toughness, low rigidity and low hardness has been developed.
Disclosure of Invention
The invention aims at solving the problems that the nylon composite material in the prior art cannot meet the requirements of high elongation at break, high notch impact strength, low rigidity and low hardness, and provides a nylon composite material. The nylon composite material is added with the benzenesulfonic acid amide plasticizer and the specific inorganic metal salt, and the obtained nylon composite material has high flexibility (high elongation at break and notch impact strength, low flexural modulus) and low hardness. The nylon composite material is suitable for preparing products such as cable protective jackets.
The invention further aims to provide a preparation method of the nylon composite material.
A further object of the present invention is to provide the use of the nylon composite described above in the preparation of a cable protective sheath.
The above object of the present invention is achieved by the following technical solutions:
the nylon composite material comprises the following components in parts by weight:
the inorganic metal salt is a metal halide and is at least one of a lithium salt, a calcium salt or a zinc salt;
the mass ratio of the benzenesulfonic acid amide plasticizer to the inorganic metal salt is less than or equal to 7.
In the invention, the PA resin is taken as a main resin, and accounts for at least 45% of the mass of the nylon composite material.
According to the invention, the inventor finds that the benzenesulfonic acid amide plasticizer is added into the PA resin, and has good compatibility because the polarity of the benzenesulfonic acid amide plasticizer is similar to that of the PA resin macromolecules, and the benzenesulfonic acid amide plasticizer is distributed around the PA resin macromolecules in an amorphous region of the PA resin, so that Van der Waals acting force among the PA resin macromolecules can be reduced, an intermolecular lubrication effect is achieved, the degree of freedom of movement of a polyamide molecular chain segment is increased, the resistance is reduced, and the macroscopic performance is improved in material elongation at break and notch impact strength. However, benzenesulfonamide plasticizers have limited effect on intermolecular hydrogen bonding in the crystalline region of PA resins, and macroscopically the materials still exhibit higher rigidity and hardness.
The inventor of the invention discovers through further research that on the basis of adding benzenesulfonic acid amide plasticizers into PA resin, the inorganic metal salt of the invention is added, and the inorganic metal salt can be used as Lewis acid to carry out complexation reaction with polar amide groups on macromolecules of the PA resin to prevent intermolecular hydrogen bonds in the PA resin from forming, thereby reducing the crystallinity of the PA resin, improving the proportion of amorphous regions, enabling benzenesulfonic acid amide plasticizers to enter polyamide molecular chains more easily, having more obvious toughening effect, being more flexible and lower in hardness, and showing a certain synergistic effect.
Namely, the invention adds benzenesulfonic acid amide plasticizer and specific inorganic metal salt, and the obtained nylon composite material has high flexibility (high elongation at break and notch impact strength, low flexural modulus) and low hardness. The nylon composite material is suitable for preparing products such as cable protective jackets.
Alternatively, the PA resin has a relative viscosity of 2.0 to 3.0.
According to the invention, the relative viscosity of the PA resin may be in accordance with ISO 307: 2007.
Preferably, the relative viscosity of the PA resin is 2.5-2.8, and the PA resin in the range is selected to obtain the nylon composite material with higher notch impact strength.
Optionally, the PA resin is a short carbon chain PA resin.
It is understood that a short carbon chain PA resin means that the repeating units of the PA resin are derived from an aliphatic diamine having a carbon number less than or equal to 6 and an aliphatic diacid having a carbon number less than or equal to 6.
Optionally, the PA resin is at least one of PA6 resin, PA66 resin, or PA56 resin.
Preferably, the PA resin is a PA6 resin.
Optionally, the benzenesulfonic acid amide plasticizer is at least one of N-butylbenzenesulfonic acid amide, N-ethyl o-p-toluenesulfonamide, N-ethyl p-toluenesulfonamide, N-diethylbenzenesulfonamide, N-diethyl p-toluenesulfonamide, N-dibutylbenzenesulfonamide, N-octylbenzenesulfonamide or N-phenylbenzenesulfonamide.
Preferably, the benzenesulfonic acid amide plasticizer is N-butylbenzenesulfonic acid amide, and the benzenesulfonic acid amide plasticizer is selected to obtain nylon composite materials with better properties, and is more suitable for being made into cable protective sleeves.
Optionally, the inorganic metal salt is at least one of lithium chloride, calcium chloride or zinc chloride.
Preferably, the inorganic metal salt is calcium chloride, and the inorganic metal salt is selected to obtain the nylon composite material with better performances, so that the nylon composite material is more suitable for being made into a cable protective sleeve.
Generally, the mass ratio of the benzenesulfonic acid amide plasticizer to the inorganic metal salt is 1 (0.15-0.5); specifically, 1:0.15, 1:0.16, 1:0.17, 1:0.18, 1:0.19, 1:0.20, 1:0.25, 1:0.305, 1:0.35, 1:0.40, 1:0.45, 1:0.50 may be used.
Toughening agents commonly used in the art may be used in the present invention.
Optionally, the toughening agent is at least one of maleic anhydride grafted POE or maleic anhydride grafted EPDM.
Optionally, the other auxiliary agent is at least one of an antioxidant, a lubricant or a weather-proof agent.
Alternatively, the antioxidants include, but are not limited to, hindered phenolic antioxidants or phosphite antioxidants.
Optionally, the lubricant includes, but is not limited to, an ester lubricant.
Optionally, the weathering agent includes, but is not limited to, an ultraviolet resistance agent.
Preferably, the nylon composite material comprises the following components in parts by weight:
the preparation method of the nylon composite material comprises the following steps: mixing the components except the benzenesulfonic acid amide plasticizer to obtain a mixture; adding the mixture from a main feeding port of an extruder, adding benzenesulfonamide plasticizer from a side feeding port of the extruder, performing melt extrusion, and granulating to obtain the nylon composite material.
Preferably, the mixing is performed in a mixer, the rotational speed of the mixing is 100-300 r/min, and the time is 10-15 min.
Preferably, the temperature of the melt extrusion is 200-235 ℃.
The application of the nylon composite material in preparing the cable protective sleeve is also in the protection scope of the invention.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, benzenesulfonic acid amide plasticizers and specific inorganic metal salts are added, and the obtained nylon composite material has high flexibility (high elongation at break and notch impact strength, low flexural modulus) and low hardness. The nylon composite material is suitable for preparing products such as cable protective jackets.
Detailed Description
The present invention will be described in further detail with reference to the following specific examples for the purpose of illustration and not limitation, and various modifications may be made within the scope of the present invention as defined by the appended claims.
The reagents selected for the examples and comparative examples of the present invention are described below:
PA resin # 1: PA6, brand HY2800A, sea-sun chemical fiber group, relative viscosity 2.8;
PA resin # 2: PA6, brand HY2500A, sea-sun chemical fiber group, relative viscosity 2.5;
PA resin 3#: PA6, brand HY2000A, sea-sun chemical fiber group, relative viscosity 2.0;
PA resin No. 4: PA66, trademark EP-158, zhejiang Huafeng New Material Co., ltd, relative viscosity 2.7;
benzenesulfonamide plasticizer 1#: n-butylbenzenesulfonamide, available from chemical Co., jin Zhong, suzhou;
benzenesulfonic acid amide plasticizer # 2: n-ethyl ortho-para-toluenesulfonamide, available from chemical industry Co., ltd., suzhou Jin Zhong;
other plasticizers: tributyl citrate, jinan Jinbang environmental protection technology Co., ltd;
inorganic metal salt 1#: calcium chloride with purity more than or equal to 99% and sold in the market;
inorganic metal salt # 2: zinc chloride with purity more than or equal to 99% and sold in the market;
inorganic metal salt 3#: lithium chloride with purity more than or equal to 99% and sold in the market;
inorganic metal salt # 4: potassium chloride with purity not less than 99% and commercially available;
toughening agent: maleic anhydride grafted POE, brand N406, photo new material technology Co., ltd;
an antioxidant: the hindered amine antioxidant and the phosphite antioxidant are mixed according to the mass ratio of 1:1, wherein the hindered amine antioxidant is N, N' -bis- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl) hexamethylenediamine, the phosphite antioxidant is bis (2, 4-dicumylphenyl) pentaerythritol diphosphite, and the hindered amine antioxidant and the phosphite antioxidant are all commercial products;
and (3) a lubricant: calcium stearate, commercially available.
The components (e.g., antioxidants, lubricants) selected for each of the parallel examples and comparative examples are the same commercially available products, unless otherwise specified.
The nylon composite materials provided by the examples and comparative examples of the present invention were subjected to performance measurement according to the following test methods:
(1) Elongation at break: tensile testing was performed according to ISO 527-2:2012, with a span of 115mm, a tensile rate of 50mm/min, and a test temperature of 23 ℃;
(2) Flexural modulus: bending test is carried out according to ISO 178:2019, the span is 64mm, the test speed is 2mm/s, and the test temperature is 23 ℃;
(3) Notched Izod impact Strength: cantilever beam notch impact test is carried out according to ISO 180:2019, wherein the notch impact test sample is A-type, the depth is 2mm, and the test temperature is 23 ℃;
(4) Shore D hardness: testing was performed according to ISO 868:2003 at a test temperature of 23 ℃;
the nylon composite materials of the embodiment and the comparative example are prepared by the following preparation method:
weighing the components according to a formula; weighing other components except the plasticizer, and uniformly mixing in a high-speed mixer to obtain a mixture; then adding the mixture into a double-screw extruder from a main feeding port; and (3) placing the plasticizer in a container and placing the container in a 90-degree water bath, adding the plasticizer into a double-screw extruder from a second feeding port of the double-screw extruder by using a metering pump, and performing melt extrusion, water cooling and granulating to obtain the nylon composite material. Wherein the rotating speed of the high-speed mixer is 100r/min, and the mixing time is 15min; the melt extrusion temperature of the twin-screw extruder is 200-235 ℃.
Examples 1 to 13
Examples 1-13 provide a series of nylon composites having the formulations shown in tables 1 and 2.
Table 1 formulations (parts by weight) of examples 1 to 7
Table 2 formulations (parts by weight) of examples 8 to 13
Comparative example 1
This comparative example provides a nylon composite, which is prepared in substantially the same manner and formulation as in example 1, except that: no benzenesulfonic acid amide plasticizer # 1 was added.
Comparative example 2
This comparative example provides a nylon composite, which is prepared in substantially the same manner and formulation as in example 1, except that: inorganic metal salt No. 1 is not added.
Comparative example 3
This comparative example provides a nylon composite, which is prepared in substantially the same manner and formulation as in example 1, except that: no benzenesulfonic acid amide plasticizer 1# and inorganic metal salt 1# were added.
Comparative example 4
This comparative example provides a nylon composite, which is prepared in substantially the same manner and formulation as in example 1, except that: benzenesulfonamide plasticizer 1# was replaced with other plasticizers.
Comparative example 5
This comparative example provides a nylon composite, which is prepared in substantially the same manner and formulation as in example 1, except that: inorganic metal salt # 1 is replaced with inorganic metal salt # 4.
Comparative example 6
This comparative example provides a nylon composite, which is prepared in substantially the same manner and formulation as in example 6, except that: the inorganic metal salt is used in an amount of 2 parts by weight.
The properties of the nylon composites of each example and comparative example were determined according to the test methods mentioned above, and the test results are shown in table 3.
Table 3 results of performance testing of nylon composites of examples and comparative examples
As can be seen from table 3:
the elongation at break of the nylon composite materials of examples 1-13 are all equal to or more than 150%, the flexural modulus is all equal to or less than 500MPa, and the notch impact strength is all equal to or more than 80KJ/m 2 The hardness is less than or equal to 70HD, which indicates that the nylon composite material has high elongation at break and notch impact strength, low flexural modulus and low hardness, and meets the requirements for preparing cable jackets.
Comparative example 1 does not add benzenesulfonamide plasticizers, and the properties of the nylon composite do not meet the requirements for preparing cable jackets. Comparative example 2, in which no specific inorganic metal salt was added, had a higher flexural modulus of the nylon composite, which was undesirable. Comparative example 3 the properties of the nylon composite material do not meet the requirements for preparing cable jackets without the addition of benzenesulfonamide plasticizers and specific inorganic metal salts. The plasticizer selected in comparative example 4 was unsuitable, and the nylon composite material had too high flexural modulus and too low notched impact strength, and did not meet the requirements for preparing a cable jacket. The inorganic metal salt selected in comparative example 5 is unsuitable, and the nylon composite material has too high flexural modulus, lower notched impact strength and higher hardness, and also does not meet the requirements for preparing a cable jacket. The mass ratio of the benzenesulfonic acid amide plasticizer and the inorganic metal salt added in comparative example 6 is not proper, and the flexural modulus of the nylon composite material is high.
It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (10)
1. The nylon composite material is characterized by comprising the following components in parts by weight:
the inorganic metal salt is a metal halide and is at least one of a lithium salt, a calcium salt or a zinc salt;
the mass ratio of the benzenesulfonic acid amide plasticizer to the inorganic metal salt is less than or equal to 7.
2. The nylon composite of claim 1, wherein the PA resin is at least one of PA6 resin, PA66 resin, or PA56 resin.
3. The nylon composite of claim 1, wherein the benzenesulfonamide plasticizer is at least one of N-butylbenzenesulfonamide, N-ethyl ortho-para-toluenesulfonamide, N-ethyl para-toluenesulfonamide, N-diethylbenzenesulfonamide, N-diethylpara-toluenesulfonamide, N-dibutylbenzenesulfonamide, N-octylbenzenesulfonamide, or N-phenylbenzenesulfonamide.
4. The nylon composite of claim 1, wherein the inorganic metal salt is at least one of lithium chloride, calcium chloride, or zinc chloride.
5. The nylon composite of claim 1 wherein the PA resin has a relative viscosity of 2.0 to 3.0.
6. The nylon composite of claim 1, wherein the toughening agent is at least one of maleic anhydride grafted POE or maleic anhydride grafted EPDM.
7. The nylon composite of claim 1, wherein the other auxiliary agent is at least one of an antioxidant, a lubricant, or a weathering agent.
8. The nylon composite of claim 1, wherein the nylon composite comprises the following components in parts by weight:
9. the method for preparing the nylon composite material according to any one of claims 1 to 8, which is characterized by comprising the following steps: mixing the components except the benzenesulfonic acid amide plasticizer to obtain a mixture; adding the mixture from a main feeding port of an extruder, adding benzenesulfonamide plasticizer from a side feeding port of the extruder, performing melt extrusion, and granulating to obtain the nylon composite material.
10. Use of a nylon composite according to any one of claims 1 to 8 for the preparation of a cable protective sheath.
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| CN202311620820.6A CN117659686A (en) | 2023-11-30 | 2023-11-30 | Nylon composite material and preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311620820.6A CN117659686A (en) | 2023-11-30 | 2023-11-30 | Nylon composite material and preparation method and application thereof |
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