CN112094497A - Polyaretylenediamine composite material and preparation method thereof - Google Patents

Polyaretylenediamine composite material and preparation method thereof Download PDF

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CN112094497A
CN112094497A CN202010923951.1A CN202010923951A CN112094497A CN 112094497 A CN112094497 A CN 112094497A CN 202010923951 A CN202010923951 A CN 202010923951A CN 112094497 A CN112094497 A CN 112094497A
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hyperbranched polyester
gas
poly
parts
terephthalate
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朱怀才
谢平
刘羽玲
杨云
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Sinoplast New Material Ltd
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Sinoplast New Material Ltd
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    • 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
    • C08L77/06—Polyamides derived from polyamines and polycarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/91—Polymers modified by chemical after-treatment
    • C08G63/912—Polymers modified by chemical after-treatment derived from hydroxycarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/002—Physical properties
    • C08K2201/003—Additives being defined by their diameter
    • 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
    • C08K2201/00—Specific properties of additives
    • C08K2201/002—Physical properties
    • C08K2201/004—Additives being defined by their length
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
    • C08L2205/18—Spheres

Abstract

The invention provides a poly (nonane-diamine terephthalate) composite material and a preparation method thereof. The poly (nonane terephthalate) diamine composite material is prepared from the following raw materials: 50-75 parts of poly (nonane-terephthalate), 20-40 parts of reinforcing material, 3-9 parts of hyperbranched polyester copolymer, 0.2-0.8 part of antioxidant and 0.5-2.0 parts of lubricant; the total weight of all the raw materials is 100 parts; the hyperbranched polyester copolymer is a copolymer of carboxyl-containing hyperbranched polyester acrylate and glycidyl methacrylate; the carboxyl-containing hyperbranched polyester acrylate is obtained by modifying hyperbranched polyester with succinic anhydride, hexamethylene diisocyanate and hydroxyethyl acrylate. The poly (nonane-diamine terephthalate) composite material has low dielectric constant and dielectric loss, excellent mechanical properties and high heat resistance.

Description

Polyaretylenediamine composite material and preparation method thereof
Technical Field
The invention belongs to the technical field of polymer composite materials, and particularly relates to a poly (nonane-diamine terephthalate) composite material and a preparation method thereof.
Background
The 5G era has come, and the polymer industry has also met a completely new era, especially in the field of electronic communications, as mobile communications will become faster, the requirements for the electromagnetic delay rate and the loss rate of mobile phone signals will become higher and higher under the condition of high frequency. Therefore, engineering plastics with low dielectric constant and low dielectric loss will become a new favorite in the 5G era.
Since the advent of the nanometer injection molding material, the nanometer injection molding material is widely used by various major mainstream brand manufacturers of mobile phones, flat panels and notebook computers. Along with the development of 5G electronic information technology, the requirement of electronic communication products on the transmittance of electromagnetic signals becomes higher and higher, so that the research and development of nano injection molding materials with low dielectric property have very important significance for the application of the nano injection molding materials in application ends of mobile phones, base stations, the internet, automobiles and the like.
At present, there are two main methods for reducing the dielectric constant and dielectric loss of polymer materials: firstly, the polarizability of the material is reduced through molecular design; and secondly, forming the nano microporous material containing the air gap. The first method mainly introduces low-polarity polymer materials and is realized by blending, but due to the difference of component composition, the low dielectric effect of the modified product is not obvious, and the modified product has the defect of poor compatibility. The second method mostly adopts a foaming mode, but the comprehensive mechanical property of the material is poor, and the normal use requirement cannot be met.
For example, CN107365480A discloses a NMT material with high heat resistance and low dielectric constant, which comprises PCT resin, glass fiber, toughening agent, antioxidant and lubricant, and the dielectric constant of the material under the 100MHz test condition is about 2.9. For another example, CN108102311A discloses a low dielectric PBT/PETG alloy nano injection molding composite material, which comprises 30-50 parts by weight of PBT resin, 30-50 parts by weight of PETG resin, 30-40 parts by weight of glass fiber, 0.2-0.8 part by weight of antioxidant, 1-2 parts by weight of lubricant, 0.3-0.5 part by weight of anti-UV agent and 3-8 parts by weight of compatilizer, and the dielectric constant of the composite material under the 100MHz test condition reaches 2.9-3.02. For another example, CN109679304A discloses a PBT/PCT composite material, a preparation method and application thereof. The material is prepared from 30-45 parts of PBT, 4-20 parts of PCT, (vinyl POSS, MAH) -g-PP5-10 parts of reinforcing material and 25-40 parts of reinforcing material, wherein the dielectric constant of the material under the 100MHz test condition is 2.55-2.96. Although CN107365480A, CN108102311A and CN109679304A all disclose that the dielectric constant of the modified composite material is 3.0 or less, their test conditions are the result of testing under the low frequency transmission condition of 1GHz or less, and the signal frequency test of mobile phone communication is usually ≥ 2.5GHz, at such high frequency, the dielectric constant of the materials disclosed in the above patent documents is actually much higher than that under the low frequency condition. In addition, although CN109679304A adopts a special space structure of POSS to realize the reduction of dielectric constant, octavinyl POSS-g- (EMA-co-GMA) is realized by extrusion and melt modification grafting, and the graft copolymer has the defects of low grafting rate, unstable grafting and low surface activity, so that the amount of octavinyl POSS-g- (EMA-co-GMA) required to be added is increased to realize lower dielectric constant, and further the integral mechanical and processing performance of the material is poor.
Therefore, there is a need to further develop a nano injection molding composite material having lower dielectric properties and excellent in all properties.
Disclosure of Invention
Based on the above, the present invention aims to provide a poly (nonane terephthalate) diamine composite material (PA9T composite material), wherein the PA9T composite material has relatively low dielectric constant and dielectric loss, and relatively high heat resistance and mechanical strength.
The specific technical scheme is as follows:
a poly (nonane terephthalate) diamine composite material is prepared from the following raw materials in parts by weight:
Figure BDA0002667681860000031
the total weight of all the raw materials is 100 parts;
the hyperbranched polyester copolymer is a copolymer of carboxyl-containing hyperbranched polyester acrylate and glycidyl methacrylate;
the carboxyl-containing hyperbranched polyester acrylate is obtained by modifying hyperbranched polyester with succinic anhydride, hexamethylene diisocyanate and hydroxyethyl acrylate.
In some embodiments, the poly (nonane terephthalate) diamine composite material is prepared from the following raw materials in parts by weight:
Figure BDA0002667681860000032
in some embodiments, the parts by weight of the poly (nonane-terephthalate) diamine in the poly (nonane-terephthalate) diamine composite may be 55 parts, 56 parts, 57 parts, 58 parts, 59 parts, 60 parts, 61 parts, 62 parts, 63 parts, 64 parts, 65 parts, 66 parts, 67 parts, 68 parts, 69 parts, or 70 parts.
In some embodiments, the weight fraction of the reinforcing material in the poly (nonanediamine terephthalate) composite may be 20 parts, 21 parts, 22 parts, 23 parts, 24 parts, 25 parts, 26 parts, 27 parts, 28 parts, 29 parts, 30 parts, 31 parts, 32 parts, 33 parts, 34 parts, 35 parts, 36 parts, 37 parts, 38 parts, 39 parts, or 40 parts.
In some of these embodiments, the weight fraction of the hyperbranched polyester copolymer in the poly (nonylenediamine terephthalate) composite can be 3 parts, 3.5 parts, 4 parts, 4.5 parts, 5 parts, 5.5 parts, 6 parts, 6.5 parts, 7 parts, 7.5 parts, 8 parts, 8.5 parts, or 9 parts.
In some of the embodiments, the weight part of the antioxidant in the poly (nonane-terephthalate) diamine composite material may be 0.2 parts, 0.25 parts, 0.3 parts, 0.35 parts, 0.4 parts, 0.45 parts, 0.5 parts, 0.55 parts, 0.6 parts, 0.65 parts, 0.7 parts, 0.75 parts or 0.8 parts.
In some of these embodiments, the weight fraction of the lubricant in the poly (nonanediamine terephthalate) composite may be 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, 0.9 parts, 1.0 parts, 1.1 parts, 1.2 parts, 1.3 parts, 1.4 parts, 1.5 parts, 1.6 parts, 1.7 parts, 1.8 parts, 1.9 parts, or 2 parts.
In some embodiments, the mass ratio of the hyperbranched polyester acrylate containing carboxyl groups to the glycidyl methacrylate is 2-4: 1-2.
In some of these embodiments, the mass ratio of succinic anhydride, hexamethylene diisocyanate, hydroxyethyl acrylate, and hyperbranched polyester is 4-5:7-8:5-6: 1.
In some of these embodiments, the hyperbranched polyester is polymerized from pentaerythritol and dimethylolpropionic acid.
In some of these embodiments, the molar ratio of pentaerythritol to dimethylolpropionic acid is 1:1 to 6.
In some of these embodiments, the molar ratio of pentaerythritol to dimethylolpropionic acid is 1:2 to 4.
In some of these embodiments, the method of making the hyperbranched polyester copolymer comprises the steps of:
reacting the hexamethylene diisocyanate with hydroxyethyl acrylate to obtain an HDI-HEA product;
reacting the hyperbranched polyester with succinic anhydride in a first organic solvent, and then adding the HDI-HEA product into the obtained reaction mixture for reaction to obtain the carboxyl-containing hyperbranched polyester acrylate;
and reacting the carboxyl-containing hyperbranched polyester acrylate, glycidyl methacrylate and a proper amount of polymerization inhibitor to obtain the hyperbranched polyester copolymer.
In some of these examples, the hexamethylene diisocyanate and hydroxyethyl acrylate are reacted at a temperature of 35-45 ℃ for a period of 10-15 hours.
In some of these embodiments, the hyperbranched polyester and succinic anhydride are reacted in the first organic solvent at a temperature of 85-95 ℃ for a time of 4-8 hours.
In some of these examples, the HDI-HEA product is added to the resulting reaction mixture at a temperature of 50 to 60 ℃ for a period of 4 to 8 hours.
In some embodiments, the temperature for reacting the carboxyl-containing hyperbranched polyester acrylate, the glycidyl methacrylate and a proper amount of polymerization inhibitor is 65-75 ℃, and the reaction is carried out until the acid value is stable.
In some of these embodiments, the first organic solvent is acetone.
In some of these embodiments, the polymerization inhibitor is p-hydroxyanisole.
In some of these embodiments, the method of preparing the hyperbranched polyester comprises the steps of: and mixing the pentaerythritol, the dimethylolpropionic acid and a second organic solvent, adding a catalyst, and reacting to obtain the hyperbranched polyester.
In some of these embodiments, the pentaerythritol may be used in an amount of (2.25mol,0.31g), (2.7mol,0.38g), (3.15mol,0.44g), (3.6mol,0.5g), (4.05mol,0.56g), or (4.5mol,0.62g), etc.; the dimethylolpropionic acid may be used in an amount of (6.3mol,0.84g), (7.56mol,1.01g), (8.82mol,1.18g), (10.08mol,1.35g), (11.34mol,1.52g) or (12.6mol,1.68g), etc.
In some embodiments, the temperature of the reaction is 130-150 ℃ and the time is 3-7 hours in the preparation step of the hyperbranched polyester.
In some of these embodiments, the second organic solvent is N, N-dimethylacetamide.
In some of these embodiments, the catalyst is toluene sulfonic acid, which may be used in an amount of 0.01g, 0.02g, 0.03g, 0.04g, or 0.05g, etc.
In some of these embodiments, the relative density of the poly (nonane-terephthalate) diamine is from 1.11 to 1.15g/cm3The melting point is 305 ℃ to 307 ℃.
In some of these embodiments, the reinforcing material is glass fiber.
In some of these embodiments, the glass fibers have a length of 3-4 mm; for example, it may be 3mm, 3.1mm, 3..2mm, 3.3mm, 3.4mm, 3.5mm, 3.6mm, 3.7mm, 3.8mm, 3.9mm, 4mm, or the like.
In some of these embodiments, the glass fibers have a diameter of 10-13 μm; for example, it may be 10 μm, 10.5 μm, 11 μm, 11.5 μm, 12 μm, 12.5 μm or 13 μm.
In some of these embodiments, the antioxidant is comprised of a hindered phenolic antioxidant and a phosphite antioxidant in a mass ratio of 1-2:1 (e.g., 1:1, 1.2:1, 1.3:1, 1.5:1, 1.6:1, 1.8:1, or 2:1, etc.).
In some of these embodiments, the hindered phenolic antioxidant is antioxidant 1098(N, N' -bis- (3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl) hexanediamine).
In some of these examples, the phosphite antioxidant is the antioxidant S-9228 (bis (2, 4-dicumylphenyl) pentaerythritol diphosphite).
In some of these embodiments, the lubricant consists of a silicone-based lubricant and a montan wax-based lubricant in a mass ratio of 1:1 to 3.
In some of these embodiments, the silicone-based lubricant is ST-LS100 (polydimethylsiloxane).
In some of these embodiments, the montan wax-based lubricant is an OP wax (partially saponified montan ester wax).
On the other hand, the invention also provides a preparation method of the poly (nonane-diamine terephthalate) composite material.
The specific technical scheme is as follows:
a preparation method of a poly (nonane-diamine terephthalate) composite material comprises the following steps:
uniformly mixing the poly (nonane terephthalate), the reinforcing material, the hyperbranched polyester copolymer, the antioxidant and the lubricant, adding the obtained mixture into an extruder, carrying out melt blending, and extruding to obtain the poly (nonane terephthalate) diamine composite material.
In some of these embodiments, the extruder is a parallel co-rotating twin screw extruder.
In some embodiments, the temperature of the extrusion is 290 ℃ or 320 ℃, and can be, for example, 290 ℃, 293 ℃, 295 ℃, 298 ℃, 300 ℃, 303 ℃, 305 ℃, 308 ℃, 310 ℃, 312 ℃, 315 ℃, 317 ℃ or 320 ℃.
In some embodiments, the main machine rotation speed of the extruder is 300-400rpm/min, such as 300rpm/min, 320rpm/min, 340rpm/min, 360rpm/min, 380rpm/min or 400 rpm/min; the extruder may have a feed speed of 5-20rpm/min, for example 5, 8, 10, 12, 14, 16, 18 or 20 rpm/min.
Compared with the prior art, the invention has the following beneficial effects:
the invention uses carboxyl-containing hyperbranched polyester acrylate and glycidyl methacrylate to copolymerize to obtain a hyperbranched polyester copolymer, and then adds the hyperbranched polyester copolymer with a specific proportion into matrix resin PA9T (poly (nonane-diamine terephthalate)), under the coordination of a certain amount of reinforcing materials, a novel PA9T composite material with lower dielectric constant and dielectric loss, excellent mechanical properties and higher heat resistance can be prepared. The hyperbranched polyester copolymer has a spherical and annular dendritic three-dimensional structure, and a large number of tiny 'hole' structures are formed in the hyperbranched polyester copolymer after the matrix resin PA9T is added, so that the dielectric constant and the dielectric loss of PA9T are greatly changed and are lower. The modified hyperbranched polyester copolymer has a large number of carboxyl groups on the surface and also has reactive epoxy groups, so that the modified hyperbranched polyester copolymer has high surface activity, can improve the contact interface layer of a reinforcing material (such as glass fiber) and PA9T resin, and improves the compatibility of the reinforcing material (such as glass fiber) and PA9T resin, so that the mechanical strength of the obtained PA9T composite material is correspondingly enhanced, and simultaneously, the chemical resistance of the whole composite material is improved due to the addition of the reinforcing material (such as glass fiber). And the antioxidant is matched to delay or inhibit the oxidation of the polymer, the lubricant is used for improving the fluidity of the material, and the components are matched with each other according to a certain proportion, so that the PA9T composite material has low dielectric constant and dielectric loss, excellent mechanical properties and high heat resistance.
Detailed Description
The technical solution of the present invention is further illustrated by the following specific examples. It should be understood by those skilled in the art that the examples are only for the understanding of the present invention and should not be construed as the specific limitations of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, article, or device that comprises a list of steps is not limited to only those steps or modules listed, but may alternatively include other steps not listed or inherent to such process, method, article, or device.
The "plurality" referred to in the present invention means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
The examples of the invention and the comparative examples used the following raw materials:
PA 9T: clonic TA 104; the relative density is 1.11-1.15g/cm3The melting point is 305-307 ℃;
glass fiber: japanese NEGT-511, 3mm in length and 10 μm in diameter.
Hyperbranched polyester copolymer: the preparation method is self-made as follows:
(1) with Pentaerythritol (PE) as a core, dimethylolpropionic acid (DMPA) as AB2 monomer, to a mixture of PE (4.5mmol,0.62g), DMPA (12.6mmol,1.68g) and 1.406g of N, N-Dimethylacetamide (DMCA), toluenesulfonic acid (p-TSA, 0.05g) was added as a catalyst, and the mixture was placed in a tri-ethanol reactor equipped with a stirrerIn the mouth bottle, N is introduced2Continuously stirring, heating to 140 ℃, reacting for 5 hours, and cooling to room temperature to obtain a hyperbranched polyester crude product; dissolving the crude product in acetone, precipitating in diethyl ether for multiple times, and vacuum drying at 70 deg.C to obtain 2.53g of hyperbranched polyester (HBPE);
(2) modifying hyperbranched polyester by succinic anhydride, Hexamethylene Diisocyanate (HDI) and hydroxyethyl acrylate (HEA) by two steps: firstly, HDI (0.11mol, 18.72g) and HEA (0.11mol, 12.87g) are added into a single-neck flask and react for 12 hours at the constant temperature of 40 ℃ to obtain an HDI-HEA product; adding 2.53g of HBPE, succinic anhydride (0.11mol, 11.09g) and 6.34g of acetone into a round-bottom flask, heating to 90 ℃ under the action of a magnetic stirrer, reacting for 6 hours, cooling to 55 ℃, finally adding an HDI-HEA product, reacting for 6 hours, and cooling to room temperature to obtain a crude modified product; precipitating the crude product by diethyl ether, and finally performing vacuum drying at 45 ℃ to obtain 38.24g of carboxyl-containing hyperbranched polyester acrylate;
(3) and (3) placing the hyperbranched polyester acrylate obtained in the step (2), Glycidyl Methacrylate (GMA) (0.11mol, 18.95g) and 0.8g of p-hydroxyanisole (polymerization inhibitor) into a three-neck bottle, and stirring at constant temperature of 70 ℃ until the acid value is stable to obtain a copolymer of carboxyl-containing hyperbranched polyester acrylate and glycidyl methacrylate, namely the hyperbranched polyester copolymer.
Example 1
The embodiment provides a PA9T composite material, which is prepared from the following components in parts by weight:
Figure BDA0002667681860000101
the preparation method of the PA9T composite material comprises the following steps:
uniformly mixing the hyperbranched polyester copolymer with PA9T, glass fiber, an antioxidant and a lubricant, adding the obtained mixture into a parallel co-rotating twin-screw extruder (the feeding rotating speed of the extruder is 15rpm/min), carrying out melt blending, setting the extrusion temperature to be 300 ℃ and the rotating speed of a screw (the rotating speed of a main machine of the extruder) to be 350r/min, and extruding to obtain the PA9T composite material.
Example 2
The embodiment provides a PA9T composite material, which is prepared from the following components in parts by weight:
Figure BDA0002667681860000102
Figure BDA0002667681860000111
the preparation method of the PA9T composite material comprises the following steps:
uniformly mixing the hyperbranched polyester copolymer with PA9T, glass fiber, an antioxidant and a lubricant, adding the obtained mixture into a parallel co-rotating twin-screw extruder (the feeding rotating speed of the extruder is 15rpm/min), carrying out melt blending, setting the extrusion temperature to be 300 ℃ and the rotating speed of a screw (the rotating speed of a main machine of the extruder) to be 350r/min, and extruding to obtain the PA9T composite material.
Example 3
The embodiment provides a PA9T composite material, which is prepared from the following components in parts by weight:
Figure BDA0002667681860000112
the preparation method of the PA9T composite material comprises the following steps:
uniformly mixing the hyperbranched polyester copolymer with PA9T, glass fiber, an antioxidant and a lubricant, adding the obtained mixture into a parallel co-rotating twin-screw extruder (the feeding rotating speed of the extruder is 15rpm/min), carrying out melt blending, setting the extrusion temperature to be 300 ℃ and the rotating speed of a screw (the rotating speed of a main machine of the extruder) to be 350r/min, and extruding to obtain the PA9T composite material.
Example 4
The embodiment provides a PA9T composite material, which is prepared from the following components in parts by weight:
Figure BDA0002667681860000121
the preparation method of the PA9T composite material comprises the following steps:
uniformly mixing the hyperbranched polyester copolymer with PA9T, glass fiber, an antioxidant and a lubricant, adding the obtained mixture into a parallel co-rotating twin-screw extruder (the feeding rotating speed of the extruder is 15rpm/min), carrying out melt blending, setting the extrusion temperature to be 300 ℃ and the rotating speed of a screw (the rotating speed of a main machine of the extruder) to be 350r/min, and extruding to obtain the PA9T composite material.
Example 5
The embodiment provides a PA9T composite material, which is prepared from the following components in parts by weight:
Figure BDA0002667681860000122
Figure BDA0002667681860000131
the preparation method of the PA9T composite material comprises the following steps:
uniformly mixing the hyperbranched polyester copolymer with PA9T, glass fiber, an antioxidant and a lubricant, adding the obtained mixture into a parallel co-rotating twin-screw extruder (the feeding rotating speed of the extruder is 15rpm/min), carrying out melt blending, setting the extrusion temperature to be 300 ℃ and the rotating speed of a screw (the rotating speed of a main machine of the extruder) to be 350r/min, and extruding to obtain the PA9T composite material.
Example 6
The embodiment provides a PA9T composite material, which is prepared from the following components in parts by weight:
Figure BDA0002667681860000132
the preparation method of the PA9T composite material comprises the following steps:
uniformly mixing the hyperbranched polyester copolymer with PA9T, glass fiber, an antioxidant and a lubricant, adding the obtained mixture into a parallel co-rotating twin-screw extruder (the feeding rotating speed of the extruder is 15rpm/min), carrying out melt blending, setting the extrusion temperature to be 300 ℃ and the rotating speed of a screw (the rotating speed of a main machine of the extruder) to be 350r/min, and extruding to obtain the PA9T composite material.
Comparative example 1
The difference from example 6 is that instead of the hyperbranched polyester copolymer, the same amount of PA9T was used, and the other components, amounts and preparation steps were the same as in example 6.
Comparative example 2
The difference from example 6 is that the same amount of (octavinyl POSS, MAH) -g-PP was used instead of the hyperbranched polyester copolymer, and the other components, amounts and preparation steps were the same as in example 6.
Among them, (octavinyl POSS, MAH) -g-PP was prepared with reference to CN 109679304A.
Comparative example 3
The difference from example 6 is that the same amount of hyperbranched polyester is used instead of the hyperbranched polyester copolymer, and the other components, the amount and the preparation steps are the same as those of example 6.
The preparation method of the hyperbranched polyester comprises the following steps:
with Pentaerythritol (PE) as a core and dimethylolpropionic acid (DMPA) as AB2 monomer, to a mixture of PE (4.5mmol,0.62g), DMPA (12.6mmol,1.68g) and 5mmol,1.406g of N, N-Dimethylacetamide (DMCA), toluenesulfonic acid (p-TSA, 0.05g) was added as a catalyst, placed in a three-necked flask equipped with a stirrer, and N was introduced2Continuously stirring, heating to 140 ℃, reacting for 5 hours, and cooling to room temperature to obtain a hyperbranched polyester crude product; and dissolving the crude product in acetone, carrying out multiple times of precipitation in diethyl ether, and finally carrying out vacuum drying at 70 ℃ to obtain 2.53g of hyperbranched polyester (HBPE).
Comparative example 4
The difference from example 6 is that the same amount of carboxyl group-containing hyperbranched polyester acrylate is used instead of the hyperbranched polyester copolymer, and the other components, the amounts and the preparation steps are the same as example 6.
The preparation method of the carboxyl-containing hyperbranched polyester acrylate comprises the following steps:
(1) with Pentaerythritol (PE) as a core and dimethylolpropionic acid (DMPA) as AB2 monomer, to a mixture of PE (4.5mmol,0.62g), DMPA (12.6mmol,1.68g) and 5mmol,1.406g of N, N-Dimethylacetamide (DMCA), toluenesulfonic acid (p-TSA, 0.05g) was added as a catalyst, placed in a three-necked flask equipped with a stirrer, and N was introduced2Continuously stirring, heating to 140 ℃, reacting for 5 hours, and cooling to room temperature to obtain a hyperbranched polyester crude product; and dissolving the crude product in acetone, carrying out multiple times of precipitation in diethyl ether, and finally carrying out vacuum drying at 70 ℃ to obtain 2.53g of hyperbranched polyester (HBPE).
(2) Modifying hyperbranched polyester by succinic anhydride, Hexamethylene Diisocyanate (HDI) and hydroxyethyl acrylate (HEA) by two steps: firstly, HDI (0.11mol, 18.72g) and HEA (0.11mol, 12.87g) are added into a single-neck flask and react for 12 hours at the constant temperature of 40 ℃ to obtain an HDI-HEA product; adding 2.53g of HBPE, succinic anhydride (0.11mol, 11.09g) and 6.34g of acetone into a round-bottom flask, heating to 90 ℃ under the action of a magnetic stirrer, reacting for 6 hours, cooling to 55 ℃, finally adding an HDI-HEA product, reacting for 6 hours, and cooling to room temperature to obtain a crude modified product; and precipitating the crude product by diethyl ether, and finally performing vacuum drying at 45 ℃ to obtain 38.24g of carboxyl-containing hyperbranched polyester acrylate.
Comparative example 5
The difference from the example 6 is that the hyperbranched polyester copolymer has the weight part of 10 parts, and other components, the using amount and the preparation steps are the same as those of the example 6.
The PA9T composites provided in examples 1-6 and comparative examples 1-5 above were tested for their performance, with the test criteria and results shown in table 1 below:
TABLE 1
Figure BDA0002667681860000161
According to the data in table 1, the PA9T composite material provided by the invention has the advantages of low dielectric constant and dielectric loss, excellent mechanical properties and good heat resistance, and can be used as a nano injection molding material for electronic communication products.
1. From examples 1 to 6, the dielectric constant and the dielectric loss of the composite material show a tendency of decreasing with the increasing of the adding amount of the hyperbranched polyester copolymer, when the adding amount reaches 7 parts, the dielectric constant is less than 3.29, and the dielectric loss factor is also reduced to 0.013, because the hyperbranched polyester copolymer has a unique three-dimensional structure similar to a spherical shape and a circular dendritic shape, when the PA9T resin is added, a large amount of tiny 'hole' structures are formed in the hyperbranched polyester copolymer, and the larger the amount of the hyperbranched polyester copolymer is, the more holes are formed in the resin, so that the dielectric constant and the dielectric loss of the PA9T composite material are both reduced.
2. Compared with the example 6, in the case of not adding the hyperbranched polyester copolymer, the PA9T composite material has very high dielectric constant and dielectric loss factor test values, and can not meet the requirement of low dielectric at all; and the mechanical strength was also lower than that of example 6.
3. Comparative example 2 compared with example 6, through the comparative tests of the hyperbranched polyester copolymer and the (octavinyl POSS, MAH) -g-PP, although the dielectric properties of the composite material are changed through the molecular structure, the effect is substantially different due to different polymerization modes; wherein (octavinyl POSS, MAH) -g-PP adopts an extrusion melting and mixing grafting method, so that the obtained polymer has low grafting rate of effective groups, is unstable and has no practicability of mass production; the hyperbranched polyester copolymer adopts a three-step synthesis method, so that the grafting rate of effective groups is high, the stability is high, and the method is suitable for mass production popularization and application; the dielectric constant and the dielectric loss factor of the PA9T composite material added with the hyperbranched polyester copolymer are far lower than those of the PA9T composite material added with (octavinyl POSS, MAH) -g-PP, and the mechanical property of the PA9T composite material added with the hyperbranched polyester copolymer is also better than that of the PA9T composite material added with (octavinyl POSS, MAH) -g-PP.
4. Compared with the example 6, the hyperbranched polyester and the hyperbranched polyester acrylate containing carboxyl are respectively used for replacing the hyperbranched polyester copolymer in the comparative examples 3-4, the mechanical property and the dielectric property of the obtained PA9T composite material are poorer than those in the example 6, and the mechanical property and the dielectric property of the PA9T composite material can be effectively improved by comparing the copolymer of the glycidyl methacrylate and the hyperbranched polyester acrylate containing carboxyl with the hyperbranched polyester acrylate containing carboxyl.
5. In comparison with example 6, when the amount of the hyperbranched polyester copolymer added is 10 parts, the dielectric constant and dielectric dissipation factor of the PA9T composite material are further reduced, but the mechanical properties of the PA9T composite material are deteriorated, and the composite material has no practical value.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, the scope of the present description should be considered as being described in the present specification.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. The poly (nonane terephthalate) diamine composite material is characterized by being prepared from the following raw materials in parts by weight:
Figure FDA0002667681850000011
the total weight of all the raw materials is 100 parts;
the hyperbranched polyester copolymer is a copolymer of carboxyl-containing hyperbranched polyester acrylate and glycidyl methacrylate;
the carboxyl-containing hyperbranched polyester acrylate is obtained by modifying hyperbranched polyester with succinic anhydride, hexamethylene diisocyanate and hydroxyethyl acrylate.
2. The poly (nonane-diamine terephthalate) composite material as claimed in claim 1, which is prepared from the following raw materials in parts by weight:
Figure FDA0002667681850000012
3. the poly (nonanediamine terephthalate) composite material according to claim 1, wherein the mass ratio of the hyperbranched polyester acrylate containing carboxyl groups to the glycidyl methacrylate is 2-4: 1-2; and/or the presence of a gas in the gas,
the mass ratio of the succinic anhydride, the hexamethylene diisocyanate, the hydroxyethyl acrylate and the hyperbranched polyester is 4-5:7-8:5-6: 1.
4. The poly (nonanediamine terephthalate) composite according to claim 1, wherein the hyperbranched polyester is obtained by polymerization of pentaerythritol and dimethylolpropionic acid; preferably, the molar ratio of pentaerythritol to dimethylolpropionic acid is 1: 1-6; more preferably, the molar ratio of pentaerythritol to dimethylolpropionic acid is from 1:2 to 4.
5. The poly (nonanediamine terephthalate) composite according to any one of claims 1 to 4, wherein the hyperbranched polyester copolymer is prepared by a method comprising the steps of:
reacting the hexamethylene diisocyanate with hydroxyethyl acrylate to obtain an HDI-HEA product;
reacting the hyperbranched polyester with succinic anhydride in a first organic solvent, and then adding the HDI-HEA product into the obtained reaction mixture for reaction to obtain the carboxyl-containing hyperbranched polyester acrylate;
and reacting the carboxyl-containing hyperbranched polyester acrylate, glycidyl methacrylate and a proper amount of polymerization inhibitor to obtain the hyperbranched polyester copolymer.
6. The poly (nonanediamine terephthalate) composite according to claim 5, wherein the reaction temperature of the hexamethylene diisocyanate and the hydroxyethyl acrylate is 35-45 ℃ and the reaction time is 10-15 hours; and/or the presence of a gas in the gas,
reacting the hyperbranched polyester and succinic anhydride in a first organic solvent at the temperature of 85-95 ℃ for 4-8 hours; and/or the presence of a gas in the gas,
adding the HDI-HEA product into the obtained reaction mixture to react at the temperature of 50-60 ℃ for 4-8 hours; and/or the presence of a gas in the gas,
reacting the carboxyl-containing hyperbranched polyester acrylate, glycidyl methacrylate and a proper amount of polymerization inhibitor at the temperature of 65-75 ℃ until the acid value is stable; and/or the presence of a gas in the gas,
the first organic solvent is acetone; and/or the presence of a gas in the gas,
the polymerization inhibitor is p-hydroxyanisole.
7. The poly (nonanediamine terephthalate) composite according to any of claims 1 to 4, wherein the hyperbranched polyester is prepared by a process comprising the following steps: and mixing the pentaerythritol, the dimethylolpropionic acid and a second organic solvent, adding a catalyst, and reacting to obtain the hyperbranched polyester.
8. The poly (nonane-terephthalamide) composite material as claimed in claim 7, wherein in the preparation step of the hyperbranched polyester, the reaction temperature is 130-150 ℃ and the reaction time is 3-7 hours; and/or the presence of a gas in the gas,
the second organic solvent is N, N-dimethylacetamide; and/or the presence of a gas in the gas,
the catalyst is toluenesulfonic acid.
9. The poly (nonanediamine terephthalate) composite according to any of claims 1 to 4, wherein the relative density of the poly (nonanediamine terephthalate) is from 1.11 to 1.15g/cm3The melting point is 305-307 ℃; and/or the presence of a gas in the gas,
the reinforcing material is glass fiber; and/or the presence of a gas in the gas,
the antioxidant consists of hindered phenol antioxidant and phosphite antioxidant according to the mass ratio of 1-2: 1; and/or the presence of a gas in the gas,
the lubricant consists of a silicone lubricant and a montan wax lubricant according to the mass ratio of 1: 1-3;
preferably, the length of the glass fiber is 3-4 mm; the diameter of the glass fiber is 10-13 μm;
the hindered phenol antioxidant is an antioxidant 1098;
the phosphite ester antioxidant is antioxidant S-9228;
the silicone lubricant is ST-LS 100;
the montan wax type lubricant is OP wax.
10. A method for preparing a poly (nonane-terephtalamide) composite material according to any one of claims 1 to 9, comprising the steps of:
uniformly mixing the poly (nonane terephthalate), the reinforcing material, the hyperbranched polyester copolymer, the antioxidant and the lubricant, adding the obtained mixture into an extruder, carrying out melt blending, and extruding to obtain the poly (nonane terephthalate) composite material;
preferably, the extruder is a parallel co-rotating twin screw extruder;
the temperature of the extrusion is 290-320 ℃;
the rotating speed of the main machine of the extruder is 300-400 rpm/min;
the feeding speed of the extruder is 5-20 rpm/min.
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105419319A (en) * 2015-12-30 2016-03-23 上海金发科技发展有限公司 Glass fiber enhanced nylon 6 material with high UV resistant performance and preparation method thereof
CN106995606A (en) * 2016-01-26 2017-08-01 合肥杰事杰新材料股份有限公司 A kind of dissaving polymer modified polyamide composite and preparation method thereof
CN108676355A (en) * 2018-05-23 2018-10-19 江苏金发科技新材料有限公司 Low floating fine high glaze fiber glass reinforced polyamide composition
CN108727810A (en) * 2018-05-23 2018-11-02 江苏金发科技新材料有限公司 Long glass fiber reinforced daiamid composition and preparation method thereof
CN110437612A (en) * 2019-08-29 2019-11-12 深圳海源恒业高新材料科技研发有限公司 Door and window heat insulating strip biology base nylon composite materials and preparation method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105419319A (en) * 2015-12-30 2016-03-23 上海金发科技发展有限公司 Glass fiber enhanced nylon 6 material with high UV resistant performance and preparation method thereof
CN106995606A (en) * 2016-01-26 2017-08-01 合肥杰事杰新材料股份有限公司 A kind of dissaving polymer modified polyamide composite and preparation method thereof
CN108676355A (en) * 2018-05-23 2018-10-19 江苏金发科技新材料有限公司 Low floating fine high glaze fiber glass reinforced polyamide composition
CN108727810A (en) * 2018-05-23 2018-11-02 江苏金发科技新材料有限公司 Long glass fiber reinforced daiamid composition and preparation method thereof
CN110437612A (en) * 2019-08-29 2019-11-12 深圳海源恒业高新材料科技研发有限公司 Door and window heat insulating strip biology base nylon composite materials and preparation method thereof

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Application publication date: 20201218