CN114031935B - Flame-retardant nylon material and preparation method thereof - Google Patents
Flame-retardant nylon material and preparation method thereof Download PDFInfo
- Publication number
- CN114031935B CN114031935B CN202111620089.8A CN202111620089A CN114031935B CN 114031935 B CN114031935 B CN 114031935B CN 202111620089 A CN202111620089 A CN 202111620089A CN 114031935 B CN114031935 B CN 114031935B
- Authority
- CN
- China
- Prior art keywords
- parts
- antioxidant
- agent
- nylon
- maleic anhydride
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a flame-retardant nylon material, which mainly comprises the following components in parts by mass: nylon resin one: 10-35 parts of a lubricant; nylon resin two: 10-35 parts of a lubricant; brominated polystyrene: 2-18 parts; polybrominated styrene: 2-18 parts; antimony trioxide: 2-8 parts; maleic anhydride grafted SEBS:0-5 parts; maleic anhydride grafted POE:0-5 parts; maleic anhydride grafted polyethylene: 0-5 parts; linear low density polyethylene: 0-15 parts; polytetrafluoroethylene: 5-10 parts; nucleating agent: 0.1-0.4 part; and (3) a main antioxidant: 0.1-0.4 part; auxiliary antioxidant: 0.1-0.4 part; and (3) a lubricant: 0.3-0.8 part; hydrolysis resistance agent: 0.1-0.4 part; coupling agent: 0.5-1.5 parts; the material has very good stability in various environments.
Description
Technical Field
The invention relates to the field of materials, in particular to a flame-retardant nylon material, a nylon sleeper and a preparation method thereof.
Background
Nylon is used in the field of rail traffic fasteners, can effectively solve the problems of shaking, high noise and the like of locomotives, can ensure stable wheelbase and reduce maintenance times, and particularly has good shock resistance and is important for ensuring the stable operation of railway locomotives.
Along with the continuous speed increasing of the railway locomotive, the corresponding performance requirements on railway products are higher and higher, and especially the requirements on the railway products in cold freezing areas with low temperature throughout the year are extremely strict. The fasteners (including nylon sleeve, gauge block and baffle seat) on common railways, high-speed rails and subways at home and abroad all use nylon as the main raw material, and have poor low-temperature toughness, low wear resistance and high production cost.
The conventional high-speed railway sleeper is mostly a concrete sleeper, the production requirement of the concrete sleeper is high, cracks are easy to generate in cold areas, the weight is large, the rail bed can be subjected to large pressure, and locomotive vibration can be transferred to the rail bed to influence the durability.
Accordingly, there is a need for a new nylon material and a new tie that address the above-described problems.
Disclosure of Invention
The invention aims to provide a novel technical scheme of a flame-retardant nylon material.
According to the first aspect of the invention, a flame-retardant nylon material is provided, which mainly comprises the following components in parts by mass:
nylon resin one: 10-35 parts of a lubricant;
nylon resin two: 10-35 parts of a lubricant;
brominated polystyrene: 2-18 parts;
polybrominated styrene: 2-18 parts;
antimony trioxide: 2-8 parts;
maleic anhydride grafted SEBS:0-5 parts;
maleic anhydride grafted POE:0-5 parts;
maleic anhydride grafted polyethylene: 0-5 parts;
linear low density polyethylene: 0-15 parts;
polytetrafluoroethylene: 5-10 parts;
nucleating agent: 0.1-0.4 part;
and (3) a main antioxidant: 0.1-0.4 part;
auxiliary antioxidant: 0.1-0.4 part;
and (3) a lubricant: 0.3-0.8 part;
hydrolysis resistance agent: 0.1-0.4 part;
coupling agent: 0.5-1.5 parts.
Preferably, the composition mainly comprises the following components in parts by weight:
nylon resin one: 15 parts;
nylon resin two: 35 parts;
brominated polystyrene: 15 parts;
polybrominated styrene: 4 parts;
antimony trioxide: 4 parts;
maleic anhydride grafted SEBS:2 parts;
maleic anhydride grafted POE:2 parts;
maleic anhydride grafted polyethylene: 0 parts;
linear low density polyethylene: 6 parts;
polytetrafluoroethylene: 5 parts;
nucleating agent: 0.2 parts;
and (3) a main antioxidant: 0.2 parts;
auxiliary antioxidant: 0.2 parts;
and (3) a lubricant: 0.4 parts;
hydrolysis resistance agent: 0.2 parts;
coupling agent: 0.8 parts.
Preferably, the nylon resin I is low-viscosity PA6 with the viscosity of 2.0-2.5; the second nylon resin is medium-high viscosity PA6 with the viscosity of 2.8-3.4.
Preferably, the wear-resistant agent is polytetrafluoroethylene powder prepared by jet milling; the coupling agent is used after being diluted by ethanol solution, and the mass concentration of the ethanol solution is 20-30%.
Preferably, the compatilizer is one or more of maleic anhydride grafted PE, maleic anhydride grafted PP, maleic anhydride grafted POE, maleic anhydride grafted SEBS and core-shell structure silicone rubber elastomer; the toughening agent is one or more of POE, EPDM rubber and SEBS; the hydrolysis inhibitor is any one or more of H3337, a stabilizer 9000 and Sanwell AH 81; the nucleating agent is any one or more of P22, CAV102, HK-145B and Finner-122; the lubricant is any one or more of PETS, TAF, SK-100, RD-500 and CAV 102.
Preferably, the primary antioxidant is any one or more of an antioxidant 1098, an antioxidant 3114 and an antioxidant Deox 1790; the auxiliary antioxidant is any one or more of antioxidant 168, antioxidant S-9228 and antioxidant Revonox 608.
According to a second aspect of the invention, a nylon sleeper is provided, which is made of the flame-retardant nylon material.
According to a third aspect of the present invention, there is provided a method for preparing the above flame retardant nylon material, mainly comprising the steps of:
step one: respectively drying the nylon resin I and the nylon resin II for 3-5 hours, and mixing to obtain a nylon mixture;
step two: adding a compatilizer, a toughening agent, a nucleating agent, a main antioxidant, an auxiliary antioxidant, a hydrolysis resistance agent and a lubricant into the nylon mixture, mixing, and adding into an extruder;
step three: and respectively adding an antiwear agent and a flame retardant into the front and the rear side feeding ports of the extruder, and then cooling and granulating the extruded material to obtain the flame-retardant nylon material.
Preferably, the antiwear agent is pretreated before being added into the extruder, and the steps of the antiwear agent pretreatment are as follows: spraying the coupling agent onto the wear-resistant agent, uniformly stirring, standing for 10-20 mm, and drying at 60-80 ℃ for 10-20min;
the preparation method of the flame retardant comprises the following steps: and mixing brominated polystyrene, polybrominated styrene and antimony trioxide, and then spraying a coupling agent to obtain the flame retardant.
Preferably, the extruder is a twin-screw extruder, and the temperatures of ten temperature zones of the twin-screw extruder are respectively: the first section 200-210 ℃, the second section 225-235 ℃, the third section 235-245 ℃, the fourth section 235-245 ℃, the fifth section 230-240 ℃, the sixth section 225-235 ℃, the seventh section 225-235 ℃, the eighth section 210-230 ℃, the ninth section 225-235 ℃ and the tenth section 240-250 ℃; the wear-resistant agent is added in the fifth stage, and the flame retardant is added in the sixth stage.
According to one embodiment of the present disclosure, the flame retardant nylon material has the characteristics of good flame retardant property and strong low temperature resistance, and can adapt to various temperature environments without affecting the performance of the nylon material;
the material has very good stability in various environments; because of the existence of an amide bond in the nylon material, water molecules mainly enter an amorphous region of the nylon material, water is easy to absorb, and the performance difference is large under different environments. The flame retardant and the toughening agent belong to organic materials, and can structurally protect an amorphous region of nylon and reduce the amount of water molecules entering the amorphous region due to large overall addition amount.
In addition, the invention adopts the maleic anhydride grafted toughening agent, and the maleic anhydride can react with nylon, so that the elastomer forms a net structure in the material, and the elastomer has good toughness at low temperature.
The sleeper prepared from the flame-retardant nylon material is lighter in weight, has better corrosion resistance and rebound resilience, can filter most of vibration in the running process of a locomotive, and well reduces vibration and pressure born by a ballast bed.
Other features of the present invention and its advantages will become apparent from the following detailed description of exemplary embodiments of the invention.
Detailed Description
Various exemplary embodiments of the invention will now be described in detail. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.
Example 1
The flame-retardant nylon material in the embodiment mainly comprises the following components in parts by mass:
nylon resin one: 10-35 parts of a lubricant;
nylon resin two: 10-35 parts of a lubricant;
brominated polystyrene: 2-18 parts;
polybrominated styrene: 2-18 parts;
antimony trioxide: 2-8 parts;
maleic anhydride grafted SEBS:0-5 parts;
maleic anhydride grafted POE:0-5 parts;
maleic anhydride grafted polyethylene: 0-5 parts;
linear low density polyethylene: 0-15 parts;
polytetrafluoroethylene: 5-10 parts;
nucleating agent: 0.1-0.4 part;
and (3) a main antioxidant: 0.1-0.4 part;
auxiliary antioxidant: 0.1-0.4 part;
and (3) a lubricant: 0.3-0.8 part;
hydrolysis resistance agent: 0.1-0.4 part;
coupling agent: 0.5-1.5 parts.
The nylon resin one in this example is low viscosity PA6 with a viscosity of 2.0-2.5; the second nylon resin is medium-high viscosity PA6 with the viscosity of 2.8-3.4.
The viscosity of the two nylon resins is different, the higher the viscosity is, the better the physical property of the nylon material is, the poorer the fluidity is, and the fluidity of the maleic anhydride grafted material is poor due to the fact that more different types of materials are added, so that the injection molding is affected. The addition of the low-viscosity PA6 mainly improves the fluidity of the whole material and improves the processing performance; high viscosity nylon mainly improves the physical properties of the material.
The wear-resistant agent is polytetrafluoroethylene powder prepared by an airflow crushing method; the coupling agent is used after being diluted by ethanol solution, and the mass concentration of the ethanol solution is 20-30%; the coupling agent is selected from silane coupling agent, propyl trimethoxy silane (KH-550), 3-glycidyl ether propyl trimethoxy silane (KH-560) and the like, the viscosity is relatively large, the use amount is relatively small, and powder agglomeration is easy to cause in the use process, so the coupling agent is diluted by ethanol solution, and the treatment and standing are also used for volatilizing ethanol.
The maleic anhydride grafted SEBS (styrene-ethylene-butylene-styrene) can play a role of a compatilizer and a toughening agent, and the polystyrene is engineering plastic, and correspondingly has good compatibility in nylon materials. One or more of maleic anhydride grafted PE, maleic anhydride grafted PP, maleic anhydride grafted POE, maleic anhydride grafted SEBS and core-shell structure silicone rubber elastomer are compounded to be used as a compatilizer;
one or more of maleic anhydride grafted POE, EPDM rubber and maleic anhydride grafted SEBS are compounded to be used as a toughening agent;
the hydrolysis inhibitor is any one or more of H3337, a stabilizer 9000 and Sanwell AH 81; the nucleating agent is any one or more of P22, CAV102, HK-145B and Finner-122; the lubricant is any one or more of PETS, TAF, SK-100, RD-500 and CAV 102.
The main antioxidant is any one or more of an antioxidant 1098, an antioxidant 3114 and an antioxidant Deox 1790; the auxiliary antioxidant is any one or more of antioxidant 168, antioxidant S-9228 and antioxidant Revonox 608.
The nylon sleeper can be made of the flame-retardant nylon material, is lighter in weight, has better corrosion resistance and rebound resilience, can filter most of vibration in the locomotive running process, and well reduces vibration and pressure born by a ballast bed.
The preparation method of the flame-retardant nylon material mainly comprises the following steps:
step one: respectively drying the nylon resin I and the nylon resin II for 3-5 hours, and mixing to obtain a nylon mixture;
step two: adding a compatilizer, a toughening agent, a nucleating agent, a main antioxidant, an auxiliary antioxidant, a hydrolysis resistance agent and a lubricant into the nylon mixture, mixing, and adding into an extruder;
step three: and respectively adding an antiwear agent and a flame retardant into the front and the rear side feeding ports of the extruder, and then cooling and granulating the extruded material to obtain the flame-retardant nylon material.
Firstly, carrying out an anti-wear agent pretreatment before the anti-wear agent is added into an extruder, wherein the anti-wear agent pretreatment comprises the following steps: spraying the coupling agent onto the wear-resistant agent, uniformly stirring, standing for 10-20 mm, and drying at 60-80 ℃ for 10-20min; the antiwear agent is pretreated by a coupling agent, and although the selected antiwear agent is an organic material, the melting point of the antiwear agent is higher, the material is not melted in the extrusion process, and the antiwear agent is easier to disperse after being treated by the coupling agent;
the preparation method of the flame retardant comprises the following steps: and mixing brominated polystyrene, polybrominated styrene and antimony trioxide, and then spraying a coupling agent to obtain the flame retardant.
The extruder in this example was a twin screw extruder, and the temperatures of the ten temperature zones of the twin screw extruder were: the first section 200-210 ℃, the second section 225-235 ℃, the third section 235-245 ℃, the fourth section 235-245 ℃, the fifth section 230-240 ℃, the sixth section 225-235 ℃, the seventh section 225-235 ℃, the eighth section 210-230 ℃, the ninth section 225-235 ℃ and the tenth section 240-250 ℃. Wherein the wear-resistant agent is added in the fifth stage and the flame retardant is added in the sixth stage.
The wear-resistant agent and the flame retardant are processed on two sides, so that degradation of the flame retardant is reduced; the anti-wear agent is fed into the side of the former zone to take away a part of shearing heat, and the fifth zone and the sixth zone are mainly transported, so that the anti-wear agent has good lubricating effect, can protect the flame retardant and reduce the risk of decomposition of the flame retardant. The flame retardant is easy to decompose under the condition of high shearing heat, the time of the flame retardant staying in the extruder is mainly reduced by selecting the side feeding, nylon is completely in a molten state after the fifth zone, the condition of blending and shearing with nylon particles can not occur, and the lubricity of the material can be further increased after the anti-wear agent is added, so that the flame retardant is protected and prevented from being degraded.
According to one embodiment of the present disclosure, the flame retardant nylon material has the characteristics of good flame retardant property and strong low temperature resistance, and can adapt to various temperature environments without affecting the performance of the nylon material;
the material has very good stability in various environments; because of the existence of an amide bond in the nylon material, water molecules mainly enter an amorphous region of the nylon material, water is easy to absorb, and the performance difference is large under different environments. The flame retardant and the toughening agent belong to organic materials, and can structurally protect an amorphous region of nylon and reduce the amount of water molecules entering the amorphous region due to large overall addition amount.
In addition, the invention adopts the maleic anhydride grafted toughening agent, and the maleic anhydride can react with nylon, so that the elastomer forms a net structure in the material, and the elastomer has good toughness at low temperature.
Example 2
The flame-retardant nylon material in the embodiment mainly comprises the following components in parts by mass:
nylon resin one: 10 parts;
nylon resin two: 35 parts;
brominated polystyrene: 2 parts;
polybrominated styrene: 18 parts;
antimony trioxide: 2 parts;
maleic anhydride grafted SEBS:5 parts;
maleic anhydride grafted POE:0 parts;
maleic anhydride grafted polyethylene: 5 parts;
linear low density polyethylene: 0 parts;
polytetrafluoroethylene: 10 parts;
nucleating agent: 0.1 part;
and (3) a main antioxidant: 0.4 parts;
auxiliary antioxidant: 0.1 part;
and (3) a lubricant: 0.8 parts;
hydrolysis resistance agent: 0.1 part;
coupling agent: 1.5 parts.
The nylon resin one in this example is low viscosity PA6 with a viscosity of 2.0-2.5; the second nylon resin is medium-high viscosity PA6 with the viscosity of 2.8-3.4.
The wear-resistant agent is polytetrafluoroethylene powder prepared by an airflow crushing method; the coupling agent is used after being diluted by ethanol solution, and the mass concentration of the ethanol solution is 20-30%; the hydrolysis inhibitor is H3337; the nucleating agent is P22; the lubricant is PETS. The primary antioxidant is an antioxidant 1098; the auxiliary antioxidant is antioxidant S-9228.
The preparation method in the first embodiment is adopted to prepare the flame-retardant nylon material.
Example 3
Nylon resin one: 35 parts;
nylon resin two: 10 parts;
brominated polystyrene: 18 parts;
polybrominated styrene: 2 parts;
antimony trioxide: 8 parts;
maleic anhydride grafted SEBS:0 parts;
maleic anhydride grafted POE:5 parts;
maleic anhydride grafted polyethylene: 0 parts;
linear low density polyethylene: 15 parts;
polytetrafluoroethylene: 5 parts;
nucleating agent: 0.4 parts;
and (3) a main antioxidant: 0.1 part;
auxiliary antioxidant: 0.4 parts;
and (3) a lubricant: 0.3 parts;
hydrolysis resistance agent: 0.4 parts;
coupling agent: 0.5 part.
The nylon resin one in this example is low viscosity PA6 with a viscosity of 2.0-2.5; the second nylon resin is medium-high viscosity PA6 with the viscosity of 2.8-3.4.
The wear-resistant agent is polytetrafluoroethylene powder prepared by an airflow crushing method; the coupling agent is used after being diluted by ethanol solution, and the mass concentration of the ethanol solution is 20-30%; the hydrolysis inhibitor is H3337; the nucleating agent is P22; the lubricant is PETS. The primary antioxidant is an antioxidant 1098; the auxiliary antioxidant is antioxidant S-9228.
The preparation method in the first embodiment is adopted to prepare the flame-retardant nylon material.
Example 4
Nylon resin one: 15 parts;
nylon resin two: 35 parts;
brominated polystyrene: 15 parts;
polybrominated styrene: 4 parts;
antimony trioxide: 4 parts;
maleic anhydride grafted SEBS:2 parts;
maleic anhydride grafted POE:2 parts;
maleic anhydride grafted polyethylene: 0 parts;
linear low density polyethylene: 6 parts;
polytetrafluoroethylene: 5 parts;
nucleating agent: 0.2 parts;
and (3) a main antioxidant: 0.2 parts;
auxiliary antioxidant: 0.2 parts;
and (3) a lubricant: 0.4 parts;
hydrolysis resistance agent: 0.2 parts;
coupling agent: 0.8 parts.
The nylon resin one in this example is low viscosity PA6 with a viscosity of 2.0-2.5; the second nylon resin is medium-high viscosity PA6 with the viscosity of 2.8-3.4.
The wear-resistant agent is polytetrafluoroethylene powder prepared by an airflow crushing method; the coupling agent is used after being diluted by ethanol solution, and the mass concentration of the ethanol solution is 20-30%; the hydrolysis inhibitor is H3337; the nucleating agent is P22; the lubricant is PETS. The primary antioxidant is an antioxidant 1098; the auxiliary antioxidant is antioxidant S-9228.
The preparation method in the first embodiment is adopted to prepare the flame-retardant nylon material.
Comparative example 1
Nylon resin 1:50 parts;
nylon resin 2:50 parts;
in the embodiment, two nylon resins are mixed to be used as a flame-retardant nylon material, wherein the first nylon resin is low-viscosity PA6 with the viscosity of 2.0-2.5; and the second nylon resin is medium-high viscosity PA6 with the viscosity of 2.8-3.4, and the flame-retardant nylon material is prepared after mixing.
Comparative example 2
Nylon resin: 50 parts;
brominated polystyrene: 15 parts;
polybrominated styrene: 4 parts;
antimony trioxide: 4 parts;
maleic anhydride grafted SEBS:0 parts;
maleic anhydride grafted POE:2 parts;
maleic anhydride grafted polyethylene: 2 parts;
linear low density polyethylene: 6 parts;
polytetrafluoroethylene: 5 parts;
nucleating agent: 0.2 parts;
and (3) a main antioxidant: 0.2 parts;
auxiliary antioxidant: 0.2 parts;
and (3) a lubricant: 0.4 parts;
hydrolysis resistance agent: 0.2 parts;
coupling agent: 0.8 parts.
The nylon resin in this embodiment is a low viscosity PA6 having a viscosity of 2.0-2.5;
the wear-resistant agent is polytetrafluoroethylene powder prepared by an airflow crushing method; the coupling agent is used after being diluted by ethanol solution, and the mass concentration of the ethanol solution is 20-30%; the hydrolysis inhibitor is H3337; the nucleating agent is P22; the lubricant is PETS. The primary antioxidant is an antioxidant 1098; the auxiliary antioxidant is antioxidant S-9228.
The preparation method in the first embodiment is adopted to prepare the flame-retardant nylon material.
Comparative example 3
Nylon resin one: 15 parts;
nylon resin two: 35 parts;
decabromodiphenyl ethane: 15 parts;
polybrominated styrene: 4 parts;
antimony trioxide: 4 parts;
maleic anhydride grafted SEBS:0 parts;
maleic anhydride grafted POE:2 parts;
maleic anhydride grafted polyethylene: 2 parts;
linear low density polyethylene: 6 parts;
polytetrafluoroethylene: 5 parts;
nucleating agent: 0.2 parts;
and (3) a main antioxidant: 0.2 parts;
auxiliary antioxidant: 0.2 parts;
and (3) a lubricant: 0.4 parts;
hydrolysis resistance agent: 0.2 parts;
coupling agent: 0.8 parts.
The nylon resin one in this example is low viscosity PA6 with a viscosity of 2.0-2.5; the second nylon resin is medium-high viscosity PA6 with the viscosity of 2.8-3.4.
The wear-resistant agent is polytetrafluoroethylene powder prepared by an airflow crushing method; the coupling agent is used after being diluted by ethanol solution, and the mass concentration of the ethanol solution is 20-30%; the hydrolysis inhibitor is H3337; the nucleating agent is P22; the lubricant is PETS. The primary antioxidant is an antioxidant 1098; the auxiliary antioxidant is antioxidant S-9228.
The preparation method in the first embodiment is adopted to prepare the flame-retardant nylon material.
Comparative example 4
Nylon resin one: 15 parts;
nylon resin two: 35 parts;
brominated polystyrene: 15 parts;
polybrominated styrene: 8 parts;
antimony trioxide: 0 parts;
maleic anhydride grafted SEBS:0 parts;
maleic anhydride grafted POE:2 parts;
maleic anhydride grafted polyethylene: 2 parts;
linear low density polyethylene: 6 parts;
polytetrafluoroethylene: 5 parts;
nucleating agent: 0.2 parts;
and (3) a main antioxidant: 0.2 parts;
auxiliary antioxidant: 0.2 parts;
and (3) a lubricant: 0.4 parts;
hydrolysis resistance agent: 0.2 parts;
coupling agent: 0.8 parts.
The nylon resin one in this example is low viscosity PA6 with a viscosity of 2.0-2.5; the second nylon resin is medium-high viscosity PA6 with the viscosity of 2.8-3.4.
The wear-resistant agent is polytetrafluoroethylene powder prepared by an airflow crushing method; the coupling agent is used after being diluted by ethanol solution, and the mass concentration of the ethanol solution is 20-30%; the hydrolysis inhibitor is H3337; the nucleating agent is P22; the lubricant is PETS. The primary antioxidant is an antioxidant 1098; the auxiliary antioxidant is antioxidant S-9228.
The preparation method in the first embodiment is adopted to prepare the flame-retardant nylon material on the premise of not adding antimony trioxide.
Comparative example 5
Nylon resin one: 15 parts;
nylon resin two: 35 parts;
brominated polystyrene: 15 parts;
polybrominated styrene: 4 parts;
antimony trioxide: 4 parts;
maleic anhydride grafted SEBS:0 parts;
maleic anhydride grafted POE:6 parts;
maleic anhydride grafted polyethylene: 0 parts;
linear low density polyethylene: 6 parts;
polytetrafluoroethylene: 5 parts;
nucleating agent: 0.2 parts;
and (3) a main antioxidant: 0.2 parts;
auxiliary antioxidant: 0.2 parts;
and (3) a lubricant: 0.4 parts;
hydrolysis resistance agent: 0.2 parts;
coupling agent: 0.8 parts.
The nylon resin one in this example is low viscosity PA6 with a viscosity of 2.0-2.5; the second nylon resin is medium-high viscosity PA6 with the viscosity of 2.8-3.4.
The wear-resistant agent is polytetrafluoroethylene powder prepared by an airflow crushing method; the coupling agent is used after being diluted by ethanol solution, and the mass concentration of the ethanol solution is 20-30%; the hydrolysis inhibitor is H3337; the nucleating agent is P22; the lubricant is PETS. The primary antioxidant is an antioxidant 1098; the auxiliary antioxidant is antioxidant S-9228.
The preparation method in the first embodiment is adopted to prepare the flame-retardant nylon material.
Comparative example 6
The flame retardant nylon materials of examples 2 to 4 were compared with the nylon materials of comparative examples 1 to 6, and the comparison parameters are shown in table 1 and table 2:
table 1: comparison of the Nylon materials of examples 2, 3, 4 with comparative examples 1, 2
Table 2: example 4 comparison with Nylon materials in comparative examples 3, 4, 5
As can be seen from the table above:
the above table is mainly to the material before and after absorbing water and the performance under normal temperature and low temperature condition is compared, this fire-retardant nylon material can be applicable to various environment, and the material performance change is the smaller more can satisfy the demand under the different conditions, and fire-retardant nylon material stability is higher in embodiment 2 to 4, especially when using as the sleeper, the effect is better.
While certain specific embodiments of the invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (8)
1. The flame-retardant nylon material is characterized by mainly comprising the following components in parts by weight:
nylon resin one: 10-35 parts of a lubricant;
nylon resin two: 10-35 parts of a lubricant;
brominated polystyrene: 2-18 parts;
polybrominated styrene: 2-18 parts;
antimony trioxide: 2-8 parts;
maleic anhydride grafted SEBS:2-5 parts;
maleic anhydride grafted POE:0-5 parts;
maleic anhydride grafted polyethylene: 0-5 parts;
linear low density polyethylene: 0-15 parts;
polytetrafluoroethylene: 5-10 parts;
nucleating agent: 0.1-0.4 part;
and (3) a main antioxidant: 0.1-0.4 part;
auxiliary antioxidant: 0.1-0.4 part;
and (3) a lubricant: 0.3-0.8 part;
hydrolysis resistance agent: 0.1-0.4 part;
coupling agent: 0.5-1.5 parts;
the nylon resin I is low-viscosity PA6 with the viscosity of 2.0-2.5; the second nylon resin is medium-high viscosity PA6 with the viscosity of 2.8-3.4.
2. The flame-retardant nylon material according to claim 1, which is characterized by mainly comprising the following components in parts by mass:
nylon resin one: 15 parts;
nylon resin two: 35 parts;
brominated polystyrene: 15 parts;
polybrominated styrene: 4 parts;
antimony trioxide: 4 parts;
maleic anhydride grafted SEBS:2 parts;
maleic anhydride grafted POE:2 parts;
linear low density polyethylene: 6 parts;
polytetrafluoroethylene: 5 parts;
nucleating agent: 0.2 parts;
and (3) a main antioxidant: 0.2 parts;
auxiliary antioxidant: 0.2 parts;
and (3) a lubricant: 0.4 parts;
hydrolysis resistance agent: 0.2 parts;
coupling agent: 0.8 parts.
3. The flame retardant nylon material of claim 1, wherein the polytetrafluoroethylene is polytetrafluoroethylene powder produced by jet milling; the coupling agent is used after being diluted by ethanol solution, and the mass concentration of the ethanol solution is 20-30%.
4. The flame retardant nylon material of claim 1, wherein the primary antioxidant is any one or more of antioxidant 1098, antioxidant 3114 and antioxidant Deox 1790; the auxiliary antioxidant is any one or more of antioxidant 168, antioxidant S-9228 and antioxidant Revonox 608.
5. A nylon sleeper made from the flame retardant nylon material of any one of claims 1 to 4.
6. A method for preparing a flame retardant nylon material according to any one of claims 1 to 4, comprising the steps of:
step one: respectively drying the nylon resin I and the nylon resin II for 3-5 hours, and mixing to obtain a nylon mixture;
step two: adding a compatilizer, a toughening agent, a nucleating agent, a main antioxidant, an auxiliary antioxidant, a hydrolysis resistance agent and a lubricant into the nylon mixture, mixing, and adding into an extruder;
step three: and respectively adding an antiwear agent and a flame retardant into the front and the rear side feeding ports of the extruder, and then cooling and granulating the extruded material to obtain the flame-retardant nylon material.
7. The method for preparing the flame retardant nylon material according to claim 6, wherein the step of preprocessing the wear-resistant agent is carried out firstly before the wear-resistant agent is added into the extruder: spraying the coupling agent onto the wear-resistant agent, uniformly stirring, standing for 10-20 mm, and drying at 60-80 ℃ for 10-20min;
the preparation method of the flame retardant comprises the following steps: and mixing brominated polystyrene, polybrominated styrene and antimony trioxide, and then spraying a coupling agent to obtain the flame retardant.
8. The method for preparing the flame retardant nylon material according to claim 6, wherein the extruder is a twin-screw extruder, and the temperatures of ten temperature areas of the twin-screw extruder are respectively: the first section 200-210 ℃, the second section 225-235 ℃, the third section 235-245 ℃, the fourth section 235-245 ℃, the fifth section 230-240 ℃, the sixth section 225-235 ℃, the seventh section 225-235 ℃, the eighth section 210-230 ℃, the ninth section 225-235 ℃ and the tenth section 240-250 ℃; the wear-resistant agent is added in the fifth stage, and the flame retardant is added in the sixth stage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111620089.8A CN114031935B (en) | 2021-12-27 | 2021-12-27 | Flame-retardant nylon material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111620089.8A CN114031935B (en) | 2021-12-27 | 2021-12-27 | Flame-retardant nylon material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114031935A CN114031935A (en) | 2022-02-11 |
| CN114031935B true CN114031935B (en) | 2023-09-08 |
Family
ID=80141302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111620089.8A Active CN114031935B (en) | 2021-12-27 | 2021-12-27 | Flame-retardant nylon material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114031935B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998029512A1 (en) * | 1996-12-27 | 1998-07-09 | Unitika Ltd. | Flame-retardant polyamide resin composition |
| CN110437606A (en) * | 2019-06-28 | 2019-11-12 | 青岛国恩科技股份有限公司 | One kind is for motor intake manifold glass fiber reinforced nylon material and preparation method thereof |
| CN111621148A (en) * | 2019-12-20 | 2020-09-04 | 四川鑫达企业集团有限公司 | High-wear-resistance bio-based PA56 composite material and preparation method thereof |
| CN112646363A (en) * | 2020-12-17 | 2021-04-13 | 重庆科聚孚工程塑料有限责任公司 | Halogen-free flame-retardant permanent antistatic glass fiber reinforced PA6 composite material, preparation method thereof, product thereof and preparation method of product |
| CN113502052A (en) * | 2021-07-31 | 2021-10-15 | 河南海瑞祥科技有限公司 | High-low temperature resistant nylon cable tie material and preparation process and preparation equipment thereof |
-
2021
- 2021-12-27 CN CN202111620089.8A patent/CN114031935B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998029512A1 (en) * | 1996-12-27 | 1998-07-09 | Unitika Ltd. | Flame-retardant polyamide resin composition |
| CN110437606A (en) * | 2019-06-28 | 2019-11-12 | 青岛国恩科技股份有限公司 | One kind is for motor intake manifold glass fiber reinforced nylon material and preparation method thereof |
| CN111621148A (en) * | 2019-12-20 | 2020-09-04 | 四川鑫达企业集团有限公司 | High-wear-resistance bio-based PA56 composite material and preparation method thereof |
| CN112646363A (en) * | 2020-12-17 | 2021-04-13 | 重庆科聚孚工程塑料有限责任公司 | Halogen-free flame-retardant permanent antistatic glass fiber reinforced PA6 composite material, preparation method thereof, product thereof and preparation method of product |
| CN113502052A (en) * | 2021-07-31 | 2021-10-15 | 河南海瑞祥科技有限公司 | High-low temperature resistant nylon cable tie material and preparation process and preparation equipment thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114031935A (en) | 2022-02-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102061088B (en) | Nylon engineering plastics for high-speed transit railway track and manufacture method thereof | |
| EP1961787B1 (en) | Filled polyamide moulding material with reduced water absorption | |
| CN101914288B (en) | Nylon 6 mineral fiber composite material for automobile engine cover lid and preparation method thereof | |
| CN100410324C (en) | Glass fibre reingorced no-halogen flame-retardant nylon 66 and its preparing method | |
| CN100425652C (en) | High-performance reinforced fire-retardant polyster engineering plastic | |
| CN103627168B (en) | A kind of Special halogen-free flame-retardant master batch for nylon and preparation method thereof | |
| EP2060607A1 (en) | Filled polyamide moulding materials | |
| CN107541049B (en) | Graphene-continuous glass fiber reinforced halogen-free flame-retardant weather-resistant PPO/HIPS alloy material and preparation method thereof | |
| CN104403186B (en) | Composite synergistic flame-retardant smoke-suppression low-smoke halogen-free framework material | |
| CN102532864A (en) | Continuous long fiber reinforced thermoplastic polyurethane material and preparation method thereof | |
| CN103160080B (en) | A kind of halogen-free flame-retardant long fiber glass reinforced PBT composite and preparation method thereof | |
| CN110204890B (en) | Perforated noise-reducing heat-resistant polyamide material and preparation method and application thereof | |
| CN102492215A (en) | Wear-resistant glass fiber reinforced polypropylene compound and preparation method thereof | |
| CN102558847B (en) | Hydrolysis resistant continuous carbon fiber reinforced nylon 6 material and preparation method thereof | |
| CN111040440B (en) | Low-density high-wear-resistance nylon composite material and preparation method and application thereof | |
| CN107082949B (en) | High-performance polypropylene plastic packaging barrel and preparation method thereof | |
| CN105504794A (en) | Hybrid fibre reinforced nylon composite material and preparation method thereof | |
| CN107778853A (en) | A kind of heat oxygen aging resistance hydrolysis continuous glass-fiber reinforced polyamide composite and preparation method thereof | |
| CN114031935B (en) | Flame-retardant nylon material and preparation method thereof | |
| CN103740025A (en) | Glass fiber reinforced inflaming retarding AES (Acrylonitrile-Ethylene propylene diene monomer-Styrene) composite material and preparation method thereof | |
| CN107841102A (en) | A kind of biodegradable toughness reinforcing heat-proof polylactic acid modified resin and preparation method thereof | |
| CN102241857A (en) | Polypropylene flame-retardant masterbatch material and preparation method thereof | |
| CN108570227A (en) | A kind of low temperature resistant ultra-toughness halogen-free reinforced nylon alloy and preparation method thereof | |
| CN111925649A (en) | Low-water-absorption enhanced high-temperature nylon resin and preparation method thereof | |
| CN106810853B (en) | Ultra-low temperature resistant nylon composite material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |