High-temperature-resistant modified nylon material and preparation process thereof

Abstract

The invention discloses a high-temperature-resistant modified nylon material which comprises the following components in parts by weight: 50-70 parts of nylon resin, 5-20 parts of a compound additive, 15-20 parts of a nucleating agent and 10-20 parts of toughened fibers, the compound additive comprises the following components in parts by weight: 10-25 parts of a dispersing agent, 26-30 parts of a flame retardant, 5-10 parts of a lubricant, 4-8 parts of a light stabilizer, 20-25 parts of a wear-resistant agent, 16-20 parts of an anti-aging agent and 10-15 parts of a toughening agent. The arrangement mode that the flexibilizer and the toughening fibers are matched is utilized, the softness and wear resistance of nylon are improved, the tensile strength of the nylon is improved, the service life of the knotted position of the nylon is longer, the comprehensive mechanical property of the material is improved, the self-lubricating effect is achieved through the addition of the lubricant, and the flame retardant is added, so that the flame-retardant nylon composite material has a good flame retardant effect. The high temperature resistance of the nylon is improved.

Description

Technical Field

[0001] The invention relates to the field of nylon materials, and in particular to a high-temperature resistant modified nylon material and a preparation process thereof. Background Art

[0002] Nylon is a polymer plastic material with high physical and mechanical properties, good thermal stability, good electrical properties, corrosion resistance and other characteristics. It is widely used in industries such as automobiles, electronic and electrical, and mechanical equipment. Nylon is a type of polyamide compound based on aliphatic or semi-aromatic groups. Nylon is a thermoplastic filamentary material that can be melt-processed into fibers, films or sheet materials. Many repeating units are connected to form nylon through amide bonds, which are similar to peptide bonds in proteins. Nylon polymers can achieve a variety of performance changes by mixing various additives. Nylon polymers have important commercial applications in textiles and fibers, shapes, films, etc.

[0003] Nylon is a common engineering plastic, widely used in the fields of electronics, household appliances, electromechanical industry, automotive appliances, etc. At present, in order to improve the various properties of nylon, various modifiers are often added, but in the prior art, the flame retardancy, impact resistance and wear resistance of nylon materials are modified, but the nylon in the prior art has poor flexibility, poor comprehensive performance, poor mechanical properties, poor tensile strength and poor resilience. For example, the large bending angle of the nylon knot is prone to creases, which causes breakage and a short service life. Summary of the invention

[0004] The purpose of the present invention is to provide a high temperature resistant modified nylon material and a preparation process thereof, so as to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the present invention provides the following technical solution: a high temperature resistant modified nylon material, comprising the following components by weight: 50-70 parts of nylon resin, 5-20 parts of composite additives, 15-20 parts of nucleating agents, and 10-20 parts of toughening fibers.

[0006] Preferably, the composite auxiliary agent includes the following components in parts by weight: 10-25 parts of dispersant, 26-30 parts of flame retardant, 5-10 parts of lubricant, 4-8 parts of light stabilizer, 20-25 parts of wear resistance agent, 16-20 parts of anti-aging agent, and 10-15 parts of toughening agent.

[0007] Preferably, the toughening fibers include one or both of glass fibers or carbon nanofibers.

[0008] Preferably, the nucleating agent is one or both of mica or talc.

[0009] Preferably, the flame retardant is one or more of aluminum hydroxide, antimony trioxide, zinc borate, triester phosphate, decabromodiphenyl ether, and aluminum hypophosphite.

[0010] Preferably, the toughening agent is one or more of polyvinyl formal, polyvinyl acetaldehyde, polyvinyl formal hexylaldehyde, and polyvinyl furfural.

[0011] A preparation process of a high temperature resistant modified nylon material comprises the following steps:

[0012] S1, weighing and preparing raw materials of nylon resin, additives, talcum powder and toughening fiber, dividing the toughening fiber into 50-200 μm, and drying the nylon resin, additives and toughening fiber for a period of time in a dryer;

[0013] S2, premixing the dispersant, flame retardant, lubricant, light stabilizer, wear resistance agent, anti-aging agent and toughening agent in the additives according to the components to obtain a mixture 1;

[0014] S3, mixing the nylon resin and the additive mixture 1 obtained in step S2 in a certain proportion, which can be done by melt mixing or solution mixing, and putting the mixture into an extruder or an injection molding machine for heating and melting for a period of time to achieve appropriate fluidity, thereby obtaining a mixture 2;

[0015] S4, adding toughening fiber and talcum powder to the mixture 1 in step S3, mixing the mixture by a mixer to obtain a mixture 2, and extruding the molten mixture 2 by an extruder;

[0016] S5, cooling and solidifying the molded material to form a solid structure to obtain a modified nylon material.

[0017] Preferably, in step S1, the nylon resin, the additives and the toughening fibers need to be placed in a drying oven with a blast temperature of 80-120° C. and a treatment time of 2-4 hours.

[0018] Preferably, in step S2, the dispersant, flame retardant, lubricant, light stabilizer, wear resistance agent, anti-aging agent, and toughening agent are mixed by a mixer, and the mixing time is 15-30 minutes.

[0019] Preferably, in step S3, the temperature of the extruder is 200°C-290°C, and the extrusion rate is 250-320 r / min.

[0020] Technical effects and advantages of the present invention:

[0021] The present invention utilizes a setting mode in which a toughening agent and a toughening fiber are matched to improve the softness and wear resistance of nylon, thereby increasing the tensile strength of nylon, making the service life of the nylon knot longer, and improving the comprehensive mechanical properties of the material. The addition of a lubricant plays a self-lubricating role, and the addition of a flame retardant improves the high temperature resistance of nylon. While maintaining the overall excellent mechanical properties of the material, the high temperature resistance and toughness are remarkable, and the use cost-effectiveness is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a flowchart of the process of the present invention. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] The present invention provides Figure 1 A high temperature resistant modified nylon material and its preparation process are shown, a high temperature resistant modified nylon material.

[0025] Implementation 1

[0026] The components include the following in parts by weight: 50 parts of nylon resin, 5 parts of composite auxiliary agent, 15 parts of nucleating agent and 10 parts of toughening fiber.

[0027] Furthermore, the composite additive includes the following components by weight: 10 parts of dispersant, 26 parts of flame retardant, 5 parts of lubricant, 4 parts of light stabilizer, 20 parts of wear resistance agent, 16 parts of anti-aging agent, and 10 parts of toughening agent.

[0028] Furthermore, the toughening fibers include one or both of glass fibers and carbon nanofibers.

[0029] Furthermore, the nucleating agent is one or both of mica and talc.

[0030] Furthermore, the flame retardant is one or more of aluminum hydroxide, antimony trioxide, zinc borate, triester phosphate, decabromodiphenyl ether, and aluminum hypophosphite.

[0031] Furthermore, the toughening agent is one or more of polyvinyl formal, polyvinyl acetaldehyde, polyvinyl formal hexylaldehyde, and polyvinyl furfural.

[0032] A preparation process of a high temperature resistant modified nylon material comprises the following steps:

[0033] S1, weighing and preparing raw materials of nylon resin, additives, talcum powder and toughening fiber, dividing the toughening fiber into 120 μm, and drying the nylon resin, additives and toughening fiber for a period of time in a dryer;

[0034] S2, premixing the dispersant, flame retardant, lubricant, light stabilizer, wear resistance agent, anti-aging agent and toughening agent in the additives according to the components to obtain a mixture 1;

[0035] S3, mixing the nylon resin and the additive mixture 1 obtained in step S2 in a certain proportion, which can be done by melt mixing or solution mixing, and putting the mixture into an extruder or an injection molding machine for heating and melting for a period of time to achieve appropriate fluidity, thereby obtaining a mixture 2;

[0036] S4, adding toughening fiber and talcum powder to the mixture 1 in step S3, mixing the mixture by a mixer to obtain a mixture 2, and extruding the molten mixture 2 by an extruder;

[0037] S5, cooling and solidifying the molded material to form a solid structure to obtain a modified nylon material.

[0038] Furthermore, in step S1, the nylon resin, the additives and the toughening fibers need to be placed in a drying oven with a blast temperature of 80° C. and a treatment time of 2 hours.

[0039] Furthermore, in step S2, the dispersant, flame retardant, lubricant, light stabilizer, wear resistance agent, anti-aging agent, and toughening agent are mixed by a mixer, and the mixing time is 15 minutes.

[0040] Furthermore, in step S3, the temperature of the extruder is 200° C. and the extrusion rate is 250 r / min.

[0041] Implementation 2

[0042] The components include the following in parts by weight: 60 parts of nylon resin, 12 parts of composite auxiliary agent, 17 parts of nucleating agent and 15 parts of toughening fiber.

[0043] Furthermore, the composite additive includes the following components by weight: 17 parts of dispersant, 28 parts of flame retardant, 8 parts of lubricant, 6 parts of light stabilizer, 22 parts of wear resistance agent, 18 parts of anti-aging agent, and 13 parts of toughening agent.

[0044] Furthermore, the toughening fibers include one or both of glass fibers and carbon nanofibers.

[0045] Furthermore, the nucleating agent is one or both of mica and talc.

[0046] Furthermore, the flame retardant is one or more of aluminum hydroxide, antimony trioxide, zinc borate, triester phosphate, decabromodiphenyl ether, and aluminum hypophosphite.

[0047] Furthermore, the toughening agent is one or more of polyvinyl formal, polyvinyl acetaldehyde, polyvinyl formal hexylaldehyde, and polyvinyl furfural.

[0048] A preparation process of a high temperature resistant modified nylon material comprises the following steps:

[0049] S1, weighing and preparing raw materials of nylon resin, additives, talcum powder and toughening fiber, dividing the toughening fiber into pieces of 160 μm, and drying the nylon resin, additives and toughening fiber for a period of time in a dryer;

[0050] S2, premixing the dispersant, flame retardant, lubricant, light stabilizer, wear resistance agent, anti-aging agent and toughening agent in the additives according to the components to obtain a mixture 1;

[0051] S3, mixing the nylon resin and the additive mixture 1 obtained in step S2 in a certain proportion, which can be done by melt mixing or solution mixing, and putting the mixture into an extruder or an injection molding machine for heating and melting for a period of time to achieve appropriate fluidity, thereby obtaining a mixture 2;

[0052] S4, adding toughening fiber and talcum powder to the mixture 1 in step S3, mixing the mixture by a mixer to obtain a mixture 2, and extruding the molten mixture 2 by an extruder;

[0053] S5, cooling and solidifying the molded material to form a solid structure to obtain a modified nylon material.

[0054] Furthermore, in step S1, the nylon resin, the additives and the toughening fibers need to be placed in a drying oven with a blast temperature of 100° C. and a treatment time of 3 hours.

[0055] Furthermore, in step S2, the dispersant, flame retardant, lubricant, light stabilizer, wear resistance agent, anti-aging agent, and toughening agent are mixed by a mixer, and the mixing time is 15-30 minutes.

[0056] Furthermore, in step S3, the temperature of the extruder is 245° C. and the extrusion rate is 285 r / min.

[0057] Implementation 3

[0058] The components include the following by weight: 70 parts of nylon resin, 20 parts of composite auxiliary agent, 20 parts of nucleating agent and 20 parts of toughening fiber.

[0059] Furthermore, the composite additive includes the following components by weight: 25 parts of dispersant, 30 parts of flame retardant, 10 parts of lubricant, 8 parts of light stabilizer, 25 parts of wear resistance agent, 20 parts of anti-aging agent, and 15 parts of toughening agent.

[0060] Furthermore, the toughening fibers include one or both of glass fibers and carbon nanofibers.

[0061] Furthermore, the nucleating agent is one or both of mica and talc.

[0062] Furthermore, the flame retardant is one or more of aluminum hydroxide, antimony trioxide, zinc borate, triester phosphate, decabromodiphenyl ether, and aluminum hypophosphite.

[0063] Furthermore, the toughening agent is one or more of polyvinyl formal, polyvinyl acetaldehyde, polyvinyl formal hexylaldehyde, and polyvinyl furfural.

[0064] A preparation process of a high temperature resistant modified nylon material comprises the following steps:

[0065] S1, weighing and preparing raw materials of nylon resin, additives, talcum powder and toughening fiber, dividing the toughening fiber into 180 μm, and drying the nylon resin, additives and toughening fiber for a period of time in a dryer;

[0066] S2, premixing the dispersant, flame retardant, lubricant, light stabilizer, wear resistance agent, anti-aging agent and toughening agent in the additives according to the components to obtain a mixture 1;

[0067] S3, mixing the nylon resin and the additive mixture 1 obtained in step S2 in a certain proportion, which can be done by melt mixing or solution mixing, and putting the mixture into an extruder or an injection molding machine for heating and melting for a period of time to achieve appropriate fluidity, thereby obtaining a mixture 2;

[0068] S4, adding toughening fiber and talcum powder to the mixture 1 in step S3, mixing the mixture by a mixer to obtain a mixture 2, and extruding the molten mixture 2 by an extruder;

[0069] S5, cooling and solidifying the molded material to form a solid structure to obtain a modified nylon material.

[0070] Furthermore, in step S1, the nylon resin, the additives and the toughening fibers need to be placed in a drying oven with a blast temperature of 120° C. and a treatment time of 4 hours.

[0071] Furthermore, in step S2, the dispersant, flame retardant, lubricant, light stabilizer, wear resistance agent, anti-aging agent, and toughening agent are mixed by a mixer, and the mixing time is 30 minutes.

[0072] Furthermore, in step S3, the temperature of the extruder is 290° C. and the extrusion rate is 320 r / min.

[0073] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high temperature resistant modified nylon material, characterized in that: The composition comprises the following components by weight: 50-70 parts of nylon resin, 5-20 parts of composite auxiliary agent, 15-20 parts of nucleating agent and 10-20 parts of toughening fiber.

2. The high temperature resistant modified nylon material according to claim 1, characterized in that: The composite auxiliary agent includes the following components by weight: 10-25 parts of dispersant, 26-30 parts of flame retardant, 5-10 parts of lubricant, 4-8 parts of light stabilizer, 20-25 parts of wear resistance agent, 16-20 parts of anti-aging agent and 10-15 parts of toughening agent.

3. A high temperature resistant modified nylon material according to claim 2, characterized in that: The toughening fibers include one or both of glass fibers and carbon nanofibers.

4. The high temperature resistant modified nylon material according to claim 2, characterized in that: The nucleating agent is one or both of mica and talc.

5. The high temperature resistant modified nylon material according to claim 2, characterized in that: The flame retardant is one or more of aluminum hydroxide, antimony trioxide, zinc borate, triester phosphate, decabromodiphenyl ether, and aluminum hypophosphite.

6. The high temperature resistant modified nylon material according to claim 2, characterized in that: The toughening agent is one or more of polyvinyl formal, polyvinyl acetaldehyde, polyvinyl formal hexanal, and polyvinyl furfural.

7. A process for preparing a high temperature resistant modified nylon material according to any one of claims 1 to 6, characterized in that: The steps include: S1, weighing and preparing raw materials of nylon resin, additives, talcum powder and toughening fiber, dividing the toughening fiber into equidistant segments, and drying the nylon resin, additives and toughening fiber for a period of time in a dryer; S2, premixing the dispersant, flame retardant, lubricant, light stabilizer, wear resistance agent, anti-aging agent and toughening agent in the additives according to the components to obtain a mixture 1; S3, mixing the nylon resin and the additive mixture 1 obtained in step S2 in a certain proportion, which can be done by melt mixing or solution mixing, and putting the mixture into an extruder or an injection molding machine for heating and melting for a period of time to achieve appropriate fluidity, thereby obtaining a mixture 2; S4, adding toughening fiber and talcum powder to the mixture 1 in step S3, mixing the mixture by a mixer to obtain a mixture 2, and extruding the molten mixture 2 by an extruder; S5, cooling and solidifying the molded material to form a solid structure to obtain a modified nylon material.

8. The process for preparing a high temperature resistant modified nylon material according to claim 7, characterized in that: In step S1, nylon resin, additives and toughening fibers need to be placed in a drying oven at a blast temperature.

9. The process for preparing a high temperature resistant modified nylon material according to claim 7, characterized in that: In step S2, the dispersant, the flame retardant, the lubricant, the light stabilizer, the anti-wear agent, the anti-aging agent, and the toughening agent are mixed by a mixer.

10. The preparation process of a high temperature resistant modified nylon material according to claim 7, characterized in that: In step S3, the temperature of the extruder is 200°C-290°C, and the extrusion rate is 250-320 r / min.

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