CN111621143A - Reinforced nylon engineering plastic and preparation method thereof - Google Patents
Reinforced nylon engineering plastic and preparation method thereof Download PDFInfo
- Publication number
- CN111621143A CN111621143A CN202010342252.8A CN202010342252A CN111621143A CN 111621143 A CN111621143 A CN 111621143A CN 202010342252 A CN202010342252 A CN 202010342252A CN 111621143 A CN111621143 A CN 111621143A
- Authority
- CN
- China
- Prior art keywords
- engineering plastic
- parts
- reinforced nylon
- glass fiber
- matrix resin
- 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.)
- Withdrawn
Links
Classifications
-
- 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
-
- 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
- C08J2451/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2451/04—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to rubbers
-
- 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
- C08J2451/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2451/06—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
-
- 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
- C08J2463/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
-
- 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
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/04—Ingredients characterised by their shape and organic or inorganic ingredients
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
- C08K5/544—Silicon-containing compounds containing nitrogen
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
The invention discloses a reinforced nylon engineering plastic and a preparation method thereof, and particularly relates to the field of engineering plastics, wherein the reinforced nylon engineering plastic comprises the following raw materials in parts by weight: 90-110 parts of nylon matrix resin, 30-45 parts of glass fiber, 6-12 parts of toughening agent, 0.3-0.8 part of heat stabilizer, 0.2-0.9 part of coupling agent and 2-4 parts of compatilizer, wherein the compatilizer is epoxy resin and EPDM-g-MAH, and the ratio of the epoxy resin to the EPDM-g-MAH is set to be 1: 1-1.4. The compatilizer is added in the traditional preparation method of the reinforced nylon engineering plastic, and the surface appearance of the glass fiber can be changed under the combined action of the epoxy resin and the EPDM-g-MAH, so that obvious wrinkles appear on the glass fiber, the contact area of the glass fiber and matrix resin is increased, the bonding strength of the glass fiber and the matrix resin is improved, and the mechanical properties of the prepared reinforced nylon engineering plastic in various aspects of tensile strength, elongation at break and notch impact strength are improved.
Description
Technical Field
The invention relates to the technical field of engineering plastics, in particular to reinforced nylon engineering plastics and a preparation method thereof.
Background
Polyamide (PA, colloquially referred to as nylon) was the first resin developed for fibers by DuPont in the united states and was commercialized in 1939. In the 50 th of the 20 th century, injection molded products are developed and produced to replace metals to meet the requirements of light weight and cost reduction of downstream industrial products. The PA has good comprehensive properties including mechanical property, heat resistance, abrasion resistance, chemical resistance and self-lubricity, has low friction coefficient and certain flame retardance, is easy to process, is suitable for being filled with glass fiber and other fillers for reinforcing modification, improves the performance and expands the application range. The nylon engineering plastic is widely applied to industries such as electronics, electrics, automobiles, buildings, office equipment, machinery, aerospace and the like due to the high performance advantages of the nylon engineering plastic in the aspects of mechanical property, durability, corrosion resistance, heat resistance and the like, and the international fashion trend of replacing steel with plastic and replacing wood with plastic is achieved. The nylon engineering plastic is used as the field with the fastest growth speed in the plastic industry in the world, the development of the nylon engineering plastic not only plays a supporting role for the national pillar industry and the modern high and new technology industry, but also promotes the transformation of the traditional industry and the adjustment of the product structure. In addition, when the gear is used as a gear, the purpose of buffering collision and impact can be achieved through self deformation and deflection, and local load caused by installation deviation can be reduced.
The mechanical property results of the blending materials such as the glass fiber and the toughening agent added in the nylon show that the tensile strength and the bending strength of the material are greatly improved along with the increase of the content of the glass fiber, the impact strength is more complex, and the toughness of the material is greatly improved by adding the toughening agent. However, in the existing reinforced nylon engineering plastic products, part of the glass fibers in the prepared plastic pellet product are debonded from the matrix resin due to insufficient adhesion between the matrix resin and the glass fibers, so that the mechanical property of the GFPA is greatly reduced, and the use requirements of users cannot be met.
Disclosure of Invention
In order to overcome the above defects in the prior art, embodiments of the present invention provide a reinforced nylon engineering plastic and a preparation method thereof, and the technical problems to be solved by the present invention are: how to improve the bonding effect of the glass fiber and the matrix resin and improve the mechanical property of GFPA.
In order to achieve the purpose, the invention provides the following technical scheme: the reinforced nylon engineering plastic comprises the following raw materials in parts by weight: 90-110 parts of nylon matrix resin, 30-45 parts of glass fiber, 6-12 parts of toughening agent, 0.3-0.8 part of heat stabilizer, 0.2-0.9 part of coupling agent and 2-4 parts of compatilizer, wherein the compatilizer is epoxy resin and EPDM-g-MAH, and the ratio of the epoxy resin to the EPDM-g-MAH is set to be 1: 1-1.4.
In a preferred embodiment, the toughening agent is provided as one or both of maleic anhydride grafted POE and maleic anhydride grafted LDPE.
In a preferred embodiment, the heat stabilizer is one or more of pentaerythritol tetrakis (3, 5-di-tert-butyl-4-hydroxy) phenylpropionate, pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ], pentaerythritol tetrakis (B- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate), tetrakis (methylene-3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate) methane, pentaerythritol tetrakis (bis-T-butylhydroxyhydrocinnamate), and pentaerythritol tetrakis (dibutylhydroxyhydrocinnamate).
In a preferred embodiment, the coupling agent is provided as 0.5% concentration of aminosilane or coupling agent KH 550.
In a preferred embodiment, the glass fibers are provided as chopped glass fibers having a fiber diameter of 10 to 12 μm and a fiber length of 3 to 3.5 mm.
In a preferred embodiment, the compatibilizer is provided as a mixed solution of an epoxy resin and EPDM-g-MAH.
The invention also discloses a preparation method of the reinforced nylon engineering plastic, which comprises the following specific preparation steps:
s1, raw material pretreatment: preparing nylon matrix resin and glass fibers according to a proportion, putting the nylon matrix resin and the glass fibers into a high-speed mixer, sequentially adding a toughening agent, a heat stabilizer, a coupling agent and a compatilizer into the high-speed mixer, then adding water until the liquid surface completely submerges the nylon matrix resin and the glass fibers, then stirring at a high speed for 13-5min, and standing and soaking for 10-30 min;
s2, drying: filtering the material completely soaked in the step S1, then performing surface washing on the pretreated glass fiber and nylon matrix resin, and then performing drying treatment and cooling for later use;
s3, granulating: and (4) putting the dried raw material in the step S2 into a co-rotating twin-screw extruder, and performing the working procedures of extrusion → cooling → air drying → granulation to obtain the reinforced nylon engineering plastic.
In a preferred embodiment, the drying condition in step S2 is drying at 100 ℃ for 10h to prevent the product from generating ripples, bubbles, obvious welding marks or insufficient product defects caused by excessive water content of the raw material.
In a preferred embodiment, in the step S3, the screw rotation speed of the co-rotating twin-screw extruder is set to 200r/min, the feeding rotation speed is set to 15 r/min, and the extrusion temperature is set to 210 ℃ to 260 ℃, so that the nylon has poor thermal stability, and therefore, the nylon is not suitable to stay in the barrel of the extruder for a long time at high temperature, so as to prevent the discoloration and yellowing of the material from affecting the quality of the finished product.
The invention has the technical effects and advantages that:
1. according to the invention, the compatilizer is added in the traditional preparation method of the reinforced nylon engineering plastic, and the surface appearance of the glass fiber can be changed under the combined action of the epoxy resin and the EPDM-g-MAH, so that the glass fiber has obvious wrinkles, the contact area of the glass fiber and the matrix resin is increased, the bonding strength of the glass fiber and the matrix resin is improved, and the mechanical properties of the prepared reinforced nylon engineering plastic in various aspects of tensile strength, elongation at break and notch impact strength are improved;
2. the toughening agent, the heat stabilizer and the coupling agent are added, so that the mechanical property retention is strong, the balanced mechanical property, the good thermal property and the flame retardance of the prepared reinforced nylon engineering plastic are greatly improved, and the service life of the reinforced nylon engineering plastic is prolonged.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the invention provides a reinforced nylon engineering plastic which comprises the following raw materials in parts by weight: 90-110 parts of nylon matrix resin, 30-45 parts of glass fiber, 6-12 parts of toughening agent, 0.3-0.8 part of heat stabilizer, 0.2-0.9 part of coupling agent and 2-4 parts of compatilizer, wherein the compatilizer is epoxy resin and EPDM-g-MAH, and the ratio of the epoxy resin to the EPDM-g-MAH is set to be 1: 1-1.4;
the concrete example comprises the following raw materials in parts by weight: 100 parts of nylon matrix resin, 35 parts of glass fiber, 9 parts of toughening agent, 0.5 part of heat stabilizer and 0.6 part of coupling agent.
The toughening agent is one or two of maleic anhydride grafted POE and maleic anhydride grafted LDPE, the heat stabilizer is one or more of pentaerythritol tetrakis (3, 5-di-tert-butyl-4-hydroxy) phenylpropionate, pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ], pentaerythritol tetrakis (B- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate), tetrakis (methylene-3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate) methane, pentaerythritol tetrakis (bis-T-butylhydroxyhydrocinnamate) and pentaerythritol tetrakis (dibutylhydroxyhydrocinnamate) 550, and the coupling agent is aminosilane or KH550 at a concentration of 0.5%, the glass fiber is chopped glass fiber, the fiber diameter is 10-12 μm, and the fiber length is 3-3.5 mm;
the invention also discloses a preparation method of the reinforced nylon engineering plastic, which comprises the following specific preparation steps:
s1, raw material pretreatment: preparing nylon matrix resin and glass fibers according to a proportion, putting the nylon matrix resin and the glass fibers into a high-speed mixer, sequentially adding a toughening agent, a heat stabilizer and a coupling agent into the high-speed mixer, then adding water until the liquid surface completely submerges the nylon matrix resin and the glass fibers, then stirring at a high speed for 13-5min, and then standing and soaking for 10-30 min;
s2, drying: filtering the material completely soaked in the step S1, then performing surface washing on the pretreated glass fiber and nylon matrix resin, then performing drying treatment at 100 ℃ for 10 hours, and cooling for later use, thereby preventing the defects of corrugation, bubbles, obvious fusion marks or insufficient products of the products caused by overlarge water content of the raw materials;
s3, granulating: and (4) putting the dried raw materials in the step S2 into a co-rotating twin-screw extruder, setting the screw rotating speed to be 200r/min, setting the feeding rotating speed to be 15 r/min and the extrusion temperature to be 210-260 ℃, and preparing the reinforced nylon engineering plastic through the working procedures of extrusion → cooling → air drying → granulation.
Example 2:
the invention provides a reinforced nylon engineering plastic which comprises the following raw materials in parts by weight: 90-110 parts of nylon matrix resin, 30-45 parts of glass fiber, 6-12 parts of toughening agent, 0.3-0.8 part of heat stabilizer, 0.2-0.9 part of coupling agent and 2-4 parts of compatilizer, wherein the compatilizer is epoxy resin and EPDM-g-MAH, and the ratio of the epoxy resin to the EPDM-g-MAH is set to be 1: 1-1.4;
the concrete example comprises the following raw materials in parts by weight: 100 parts of nylon matrix resin, 35 parts of glass fiber, 9 parts of toughening agent, 0.5 part of heat stabilizer, 0.6 part of coupling agent and 3 parts of compatilizer, wherein the compatilizer is epoxy resin and EPDM-g-MAH, and the ratio of the epoxy resin to the EPDM-g-MAH is set to be 1: 1.2.
The toughening agent is one or two of maleic anhydride grafted POE and maleic anhydride grafted LDPE, the heat stabilizer is one or more of pentaerythritol tetrakis (3, 5-di-tert-butyl-4-hydroxy) phenylpropionate, pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ], pentaerythritol tetrakis (B- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate), tetrakis (methylene-3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate) methane, pentaerythritol tetrakis (bis-T-butylhydroxyhydrocinnamate) and pentaerythritol tetrakis (dibutylhydroxyhydrocinnamate) 550, and the coupling agent is aminosilane or KH550 at a concentration of 0.5%, the glass fiber is set to be chopped glass fiber, the fiber diameter is 10-12 mu m, the fiber length is 3-3.5mm, and the compatilizer is set to be mixed solution of epoxy resin and EPDM-g-MAH;
the invention also discloses a preparation method of the reinforced nylon engineering plastic, which comprises the following specific preparation steps:
s1, raw material pretreatment: preparing nylon matrix resin and glass fibers according to a proportion, putting the nylon matrix resin and the glass fibers into a high-speed mixer, sequentially adding a toughening agent, a heat stabilizer, a coupling agent and a compatilizer into the high-speed mixer, then adding water until the liquid surface completely submerges the nylon matrix resin and the glass fibers, then stirring at a high speed for 13-5min, and standing and soaking for 10-30 min;
s2, drying: filtering the material completely soaked in the step S1, then performing surface washing on the pretreated glass fiber and nylon matrix resin, then performing drying treatment at 100 ℃ for 10 hours, and cooling for later use, thereby preventing the defects of corrugation, bubbles, obvious fusion marks or insufficient products of the products caused by overlarge water content of the raw materials;
s3, granulating: and (4) putting the dried raw materials in the step S2 into a co-rotating twin-screw extruder, setting the screw rotating speed to be 200r/min, setting the feeding rotating speed to be 15 r/min and the extrusion temperature to be 210-260 ℃, and preparing the reinforced nylon engineering plastic through the working procedures of extrusion → cooling → air drying → granulation.
Example 3:
the invention provides a reinforced nylon engineering plastic which comprises the following raw materials in parts by weight: 90-110 parts of nylon matrix resin, 30-45 parts of glass fiber, 6-12 parts of toughening agent, 0.3-0.8 part of heat stabilizer, 0.2-0.9 part of coupling agent and 2-4 parts of compatilizer, wherein the compatilizer is epoxy resin and EPDM-g-MAH, and the ratio of the epoxy resin to the EPDM-g-MAH is set to be 1: 1-1.4;
the concrete example comprises the following raw materials in parts by weight: 100 parts of nylon matrix resin, 35 parts of glass fiber, 9 parts of toughening agent, 0.5 part of heat stabilizer, 0.6 part of coupling agent and 3 parts of compatilizer, wherein the compatilizer is epoxy resin.
The toughening agent is one or two of maleic anhydride grafted POE and maleic anhydride grafted LDPE, the heat stabilizer is one or more of pentaerythritol tetrakis (3, 5-di-tert-butyl-4-hydroxy) phenylpropionate, pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ], pentaerythritol tetrakis (B- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate), tetrakis (methylene-3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate) methane, pentaerythritol tetrakis (bis-T-butylhydroxyhydrocinnamate) and pentaerythritol tetrakis (dibutylhydroxyhydrocinnamate) 550, and the coupling agent is aminosilane or KH550 at a concentration of 0.5%, the glass fiber is chopped glass fiber, the fiber diameter is 10-12 μm, and the fiber length is 3-3.5 mm;
the invention also discloses a preparation method of the reinforced nylon engineering plastic, which comprises the following specific preparation steps:
s1, raw material pretreatment: preparing nylon matrix resin and glass fibers according to a proportion, putting the nylon matrix resin and the glass fibers into a high-speed mixer, sequentially adding a toughening agent, a heat stabilizer, a coupling agent and a compatilizer into the high-speed mixer, then adding water until the liquid surface completely submerges the nylon matrix resin and the glass fibers, then stirring at a high speed for 13-5min, and standing and soaking for 10-30 min;
s2, drying: filtering the material completely soaked in the step S1, then performing surface washing on the pretreated glass fiber and nylon matrix resin, then performing drying treatment at 100 ℃ for 10 hours, and cooling for later use, thereby preventing the defects of corrugation, bubbles, obvious fusion marks or insufficient products of the products caused by overlarge water content of the raw materials;
s3, granulating: and (4) putting the dried raw materials in the step S2 into a co-rotating twin-screw extruder, setting the screw rotating speed to be 200r/min, setting the feeding rotating speed to be 15 r/min and the extrusion temperature to be 210-260 ℃, and preparing the reinforced nylon engineering plastic through the working procedures of extrusion → cooling → air drying → granulation.
Example 4:
the invention provides a reinforced nylon engineering plastic which comprises the following raw materials in parts by weight: 90-110 parts of nylon matrix resin, 30-45 parts of glass fiber, 6-12 parts of toughening agent, 0.3-0.8 part of heat stabilizer, 0.2-0.9 part of coupling agent and 2-4 parts of compatilizer, wherein the compatilizer is epoxy resin and EPDM-g-MAH, and the ratio of the epoxy resin to the EPDM-g-MAH is set to be 1: 1-1.4;
the concrete example comprises the following raw materials in parts by weight: 100 parts of nylon matrix resin, 35 parts of glass fiber, 9 parts of toughening agent, 0.5 part of heat stabilizer, 0.6 part of coupling agent and 3 parts of compatilizer, wherein the compatilizer is EPDM-g-MAH.
The toughening agent is one or two of maleic anhydride grafted POE and maleic anhydride grafted LDPE, the heat stabilizer is one or more of pentaerythritol tetrakis (3, 5-di-tert-butyl-4-hydroxy) phenylpropionate, pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ], pentaerythritol tetrakis (B- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate), tetrakis (methylene-3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate) methane, pentaerythritol tetrakis (bis-T-butylhydroxyhydrocinnamate) and pentaerythritol tetrakis (dibutylhydroxyhydrocinnamate) 550, and the coupling agent is aminosilane or KH550 at a concentration of 0.5%, the glass fiber is chopped glass fiber, the fiber diameter is 10-12 μm, and the fiber length is 3-3.5 mm;
the invention also discloses a preparation method of the reinforced nylon engineering plastic, which comprises the following specific preparation steps:
s1, raw material pretreatment: preparing nylon matrix resin and glass fibers according to a proportion, putting the nylon matrix resin and the glass fibers into a high-speed mixer, sequentially adding a toughening agent, a heat stabilizer, a coupling agent and a compatilizer into the high-speed mixer, then adding water until the liquid surface completely submerges the nylon matrix resin and the glass fibers, then stirring at a high speed for 13-5min, and standing and soaking for 10-30 min;
s2, drying: filtering the material completely soaked in the step S1, then performing surface washing on the pretreated glass fiber and nylon matrix resin, then performing drying treatment at 100 ℃ for 10 hours, and cooling for later use, thereby preventing the defects of corrugation, bubbles, obvious fusion marks or insufficient products of the products caused by overlarge water content of the raw materials;
s3, granulating: and (4) putting the dried raw materials in the step S2 into a co-rotating twin-screw extruder, setting the screw rotating speed to be 200r/min, setting the feeding rotating speed to be 15 r/min and the extrusion temperature to be 210-260 ℃, and preparing the reinforced nylon engineering plastic through the working procedures of extrusion → cooling → air drying → granulation.
Example 5:
the engineering plastics prepared by the methods of the above embodiments 1 to 4 are respectively taken and subjected to performance detection in four groups by using a universal material testing machine, and the following data are obtained:
| tensile strength/MPa | Elongation at break/% | Notched impact strength/KJ/m2 | Observation of scanning electron microscope | |
| Example 1 | 98.7 | 3.8 | 5.5 | The glass fiber surface on the section of the sample strip is smooth and has no obvious sign of PA matrix coating |
| Example 2 | 113.2 | 4.5 | 7.6 | The glass fiber surface on the section of the sample strip has obvious folds, and the glass fiber surface is effectively coated by matrix resin |
| Example 3 | 102.4 | 4.1 | 6.1 | The glass fiber surface on the section of the sample strip is smooth, and part of the glass fiber surface is effectively coated by matrix resin |
| Example 4 | 104.4 | 3.9 | 5.8 | The glass fiber surface on the section of the sample strip has obvious wrinkles and has no obvious sign of PA matrix coating |
As can be seen from the above table, the raw materials in example 2 are mixed in a moderate proportion, the detection values of the tensile strength, the elongation at break and the notch impact strength of the engineering plastic prepared by the formula and the method are all obviously improved, and the surface of the glass fiber is observed to be wrinkled on the section of the sample strip, and the glass fiber is effectively coated by the matrix resin, thereby indirectly providing a proof for the mechanical properties of the prepared GFPA.
And finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (9)
1. A reinforced nylon engineering plastic is characterized in that: the material comprises the following raw materials in parts by weight: 90-110 parts of nylon matrix resin, 30-45 parts of glass fiber, 6-12 parts of toughening agent, 0.3-0.8 part of heat stabilizer, 0.2-0.9 part of coupling agent and 2-4 parts of compatilizer, wherein the compatilizer is epoxy resin and EPDM-g-MAH, and the ratio of the epoxy resin to the EPDM-g-MAH is set to be 1: 1-1.4.
2. The reinforced nylon engineering plastic as claimed in claim 1, wherein: the toughening agent is set to be one or two of maleic anhydride grafted POE and maleic anhydride grafted LDPE.
3. The reinforced nylon engineering plastic as claimed in claim 1, wherein: the heat stabilizer is one or more of pentaerythritol tetrakis (3, 5-di-tert-butyl-4-hydroxy) phenylpropionate, pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ], pentaerythritol tetrakis (B- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate), tetrakis (methylene-3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate) methane, pentaerythritol tetrakis (bis-T-butyl hydroxyhydrocinnamate) and pentaerythritol tetrakis (dibutyl hydroxyhydrocinnamate).
4. The reinforced nylon engineering plastic as claimed in claim 1, wherein: the coupling agent was set to 0.5% concentration of aminosilane or coupling agent KH 550.
5. The reinforced nylon engineering plastic as claimed in claim 1, wherein: the glass fiber is chopped glass fiber, the fiber diameter is 10-12 μm, and the fiber length is 3-3.5 mm.
6. The reinforced nylon engineering plastic as claimed in claim 1, wherein: the compatilizer is set as a mixed solution of epoxy resin and EPDM-g-MAH.
7. The reinforced nylon engineering plastic according to any one of claims 1 to 6, wherein: the preparation method of the reinforced nylon engineering plastic comprises the following specific preparation steps:
s1, raw material pretreatment: preparing nylon matrix resin and glass fibers according to a proportion, putting the nylon matrix resin and the glass fibers into a high-speed mixer, sequentially adding a toughening agent, a heat stabilizer, a coupling agent and a compatilizer into the high-speed mixer, then adding water until the liquid surface completely submerges the nylon matrix resin and the glass fibers, then stirring at a high speed for 13-5min, and standing and soaking for 10-30 min;
s2, drying: filtering the material completely soaked in the step S1, then performing surface washing on the pretreated glass fiber and nylon matrix resin, and then performing drying treatment and cooling for later use;
s3, granulating: and (4) putting the dried raw material in the step S2 into a co-rotating twin-screw extruder, and performing the working procedures of extrusion → cooling → air drying → granulation to obtain the reinforced nylon engineering plastic.
8. The preparation method of the reinforced nylon engineering plastic as claimed in claim 7, wherein the preparation method comprises the following steps: the drying condition in the step S2 is drying at 100 ℃ for 10 h.
9. The preparation method of the reinforced nylon engineering plastic as claimed in claim 7, wherein the preparation method comprises the following steps: in the step S3, the screw rotating speed of the co-rotating twin-screw extruder is set to be 200r/min, the feeding rotating speed is set to be 15 r/min, and the extrusion temperature is set to be 210-260 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010342252.8A CN111621143A (en) | 2020-04-27 | 2020-04-27 | Reinforced nylon engineering plastic and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010342252.8A CN111621143A (en) | 2020-04-27 | 2020-04-27 | Reinforced nylon engineering plastic and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111621143A true CN111621143A (en) | 2020-09-04 |
Family
ID=72257919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010342252.8A Withdrawn CN111621143A (en) | 2020-04-27 | 2020-04-27 | Reinforced nylon engineering plastic and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111621143A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112322032A (en) * | 2020-11-13 | 2021-02-05 | 江阴市一诺工程塑料有限公司 | High-strength high-toughness PA6 composite material for automobile chassis and preparation method thereof |
-
2020
- 2020-04-27 CN CN202010342252.8A patent/CN111621143A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112322032A (en) * | 2020-11-13 | 2021-02-05 | 江阴市一诺工程塑料有限公司 | High-strength high-toughness PA6 composite material for automobile chassis and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106810852B (en) | Glass fiber reinforced PA6 composition and preparation method thereof | |
| CN101792596A (en) | Composite material for recycling waste vehicle nylon products and preparation method thereof | |
| CN103059528B (en) | A kind of polycaprolactone composite material and preparation method thereof | |
| CN109401302A (en) | Good surface high impact nylon/POK alloy and preparation method thereof | |
| CN105754336A (en) | PA66 composite material composition with favorable appearance and high static pressure resistance and preparation method of PA66 composite material composition | |
| CN111040440A (en) | Low-density high-wear-resistance nylon composite material and preparation method and application thereof | |
| CN111621143A (en) | Reinforced nylon engineering plastic and preparation method thereof | |
| CN102558844A (en) | Glass fiber reinforced nylon 6-polyethylene terephthalate alloy material and preparation method thereof | |
| CN110894356A (en) | High-strength modified nylon material for automobile | |
| CN111138855A (en) | Modified nylon material for automobile bumper | |
| CN107298832A (en) | A kind of basalt fibre enhancing polybutylene terephthalate (PBT) composite and preparation method thereof | |
| CN111073244B (en) | Polycarbonate composition and preparation method thereof | |
| CN112662169A (en) | High-impact-strength PA6 composite material and preparation method thereof | |
| CN103788389B (en) | A kind of long glass fiber reinforced polypropylene and preparation method thereof | |
| CN113088017B (en) | Glass fiber reinforced polyvinyl chloride composite material and preparation method thereof | |
| CN104292828A (en) | Reinforced nylon 66 composite material and preparation method thereof | |
| CN114249980B (en) | Glass fiber reinforced polyamide material for plastic high-pressure water gun and preparation method thereof | |
| JP5451522B2 (en) | Method for producing long fiber reinforced polyamide resin composition | |
| CN106810851B (en) | Glass fiber reinforced PA6 composition with improved floating fiber and preparation method thereof | |
| CN101760003A (en) | Ultraviolet resistant nylon/acrylonitrile-styrene-acrylate resin co-mixed material | |
| CN114805794B (en) | Application of compound in improving molecular weight of nylon | |
| KR20160146063A (en) | Polyamide resin composition with high fluidity | |
| CN115160775B (en) | Anti-color-change chain-extension modified regenerated nylon 6 material and preparation method and application thereof | |
| CN114656719B (en) | Long plant fiber modified reinforced polypropylene composite material and preparation method and application thereof | |
| CN106905692A (en) | A kind of injection grade heat-resisting chopped carbon fiber nylon composite materials high and its technology of preparing |
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 | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200904 |