A high-performance polyetherimide ternary alloy material and preparation method thereof

Abstract

The invention discloses a high-performance polyetherimide ternary alloy material and a preparation method thereof, which is composed of the following materials by mass percentage: 45-60 parts of etherimide, 10-25 parts of polyethersulfone, 10-25 parts of polyetheretherketone, 1-5 parts of chain extender, and 0.5-1 parts of antioxidant; during preparation, each raw material is weighed according to a formula, and the weighed polyetherimide and polyethersulfone are dried; the dried polyetherimide, polyethersulfone and antioxidant are mixed in a high-speed mixer for 5min and then melt-extruded to form a polyetherimide binary alloy material; the polyetherimide alloy material is dried and mixed with other raw materials in a high-speed mixer for 10min, and then melt-extruded to form a polyetherimide ternary alloy material. Different components of the present invention have higher compatibility, and this alloy material has good mechanical properties.

Description

Technical Field

[0001] The invention relates to the technical field of polymer materials, and in particular to a high-performance polyetherimide ternary alloy material and a preparation method thereof. Background Art

[0002] Polyetherimide (PEI) is a non-crystalline thermoplastic high-performance engineering plastic with excellent mechanical properties, electrical properties, flame retardancy and processing properties. Therefore, PEI is often used in electronics, electrical machinery, aviation, food and other industrial sectors, and is used as a substitute for certain metals, such as bearings, pistons and sliding guides.

[0003] As various products have increasingly higher requirements for performance, simple polyetherimide can no longer meet the requirements. In order to further improve the mechanical properties and heat resistance of polyetherimide, polyetherimide, polyethersulfone and polyetheretherketone are blended to prepare a ternary alloy in the prior art. However, the prepared ternary alloy has poor compatibility and severe phase separation. Summary of the invention

[0004] The purpose of the present invention is to solve the problems of the prior art and provide an improved PE I ternary alloy whose different components have higher compatibility and the alloy material has good mechanical properties; at the same time, it solves many difficulties in the melt blending processing of PE I composite materials and provides a suitable processing technology.

[0005] To achieve the purpose of the present invention, the present invention adopts the following technical solutions:

[0006] A high-performance polyetherimide ternary alloy material, composed of the following materials by mass percentage:

[0007]

[0008]

[0009] In some embodiments, the polyetherimide is 45 parts, the polyethersulfone is 25 parts, the polyetheretherketone is 25 parts, the chain extender is 4.5 parts, and the antioxidant is 0.5 parts.

[0010] In some embodiments, polyetherimide is 60 parts, polyethersulfone is 13 parts, polyetheretherketone is 25 parts, chain extender is 1 part, and antioxidant is 1 part.

[0011] In some embodiments, the polyetherimide is 60 parts, the polyethersulfone is 25 parts, the polyetheretherketone is 10 parts, the chain extender is 4 parts, and the antioxidant is 1 part.

[0012] In some embodiments, the polyetherimide is 60 parts, the polyethersulfone is 20 parts, the polyetheretherketone is 14.5 parts, the chain extender is 5 parts, and the antioxidant is 0.5 parts.

[0013] In some embodiments, the polyetherimide is Saudi Sabic, model: U l tem 1010; the polyethersulfone is Saudi Sabic, model: COLORCOMP J1000; the polyetheretherketone is Victrex, model: 450G; the antioxidant is BASF's Irganox 1098; the chain extender is SA-U980 of Quansheng Polycarbon Technology Co., Ltd.

[0014] A method for preparing a high-performance polyetherimide ternary alloy material comprises the following steps:

[0015] S100: weighing various raw materials according to the formula, and drying the weighed polyetherimide and polyethersulfone;

[0016] S200: mixing the polyetherimide, polyethersulfone and antioxidant dried in step S100 in a high-speed mixer for 5 minutes and then melt-extruding to prepare a polyetherimide binary alloy material;

[0017] S300: The polyetherimide alloy material in step S200 is dried and mixed with other raw materials in a high-speed mixer for 10 minutes, and then melt-extruded to prepare a polyetherimide ternary alloy material.

[0018] In some embodiments, the drying process in step S100 is performed at a temperature of 140-160° C. and the drying time is 4-8 hours.

[0019] In some embodiments, the melt extrusion operations in steps S200 and S300 are carried out in an extruder, and the temperatures of each section in the extruder are: 220-240°C in zone 1, 240-270°C in zone 2, 340-350°C in zone 3, 340-350°C in zone 4, 340-350°C in zone 5, 345-355°C in zone 6, 330-340°C in zone 7, 330-340°C in zone 8, 330-340°C in zone 9, 330-340°C in zone 10, and 360-365°C in zone 11, wherein the screw aspect ratio is 36-48, and the screw speed is 200-500rpm.

[0020] The present invention provides a high-performance polyetherimide ternary alloy material and a preparation method thereof, which have the following advantages:

[0021] The melting point of the alloyed polyetherimide after blending and modification in the present invention is reduced, the processing performance is improved, and the other two phases can be better combined. The present invention uses the chain extender SA-U980 of Quansheng Polycarbon Technology Co., Ltd. to better fuse the polyetherimide, polyethersulfone and polyetheretherketone with poor compatibility, so that the material has good dispersibility during the extrusion process. After extrusion molding, the material has good rigidity and toughness, and can also have excellent high temperature resistance, as well as corrosion resistance, radiation resistance, flame retardancy, hydrolysis resistance and other properties, and its cost is relatively low. At the same time, the preparation method of the present invention further improves the comprehensive performance of the material by extruding the raw materials in steps, and has excellent industrial prospects. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] A high-performance polyetherimide ternary alloy material, characterized in that it is composed of the following materials by mass percentage:

[0024]

[0025] In this embodiment, polyetherimide (PEI) is a known commercial product purchased from Saudi Sabic (SAB IC), model: U l tem 1010. Polyethersulfone (PES) is a known commercial product purchased from Saudi Sabic (SAB IC), model: COLORCOMP J1000. Polyetheretherketone (PEEK) is a known commercial product purchased from VICTREX, model: 450G. The antioxidant can be I rganox 1098 from BASF. The chain extender can be SA-U980 from Quansheng Polycarbon Technology Co., Ltd.

[0026] In this embodiment, the melting point of the alloyed polyetherimide after blending and modification is reduced, the processing performance is improved, and the other two phases can be better combined. In this embodiment, the chain extender SA-U980 of Quansheng Polycarbon Technology Co., Ltd. can better fuse the polyetherimide, polyethersulfone and polyetheretherketone with poor compatibility, so that the material has good dispersion during the extrusion process. After extrusion molding, the material has good rigidity and toughness, and can also have excellent high temperature resistance, as well as corrosion resistance, radiation resistance, flame retardancy, hydrolysis resistance and other properties, and its cost is relatively low.

[0027] The high performance polyetherimide ternary alloy material of the present embodiment is prepared by the following technology, comprising the following steps:

[0028] (1) weighing each raw material according to the formula, and drying the weighed polyetherimide and polyethersulfone;

[0029] (2) mixing the polyetherimide, polyethersulfone and antioxidant dried in step (1) in a high-speed mixer for 5 minutes and then melt-extruding to prepare a polyetherimide binary alloy material;

[0030] (3) The polyetherimide alloy material in step (2) is dried and mixed with other raw materials in a high-speed mixer for 10 minutes, and then melt-extruded to prepare a polyetherimide ternary alloy material.

[0031] Furthermore, the drying treatment in step (1) is carried out at a temperature of 140-160° C. and a drying time of 4-8 hours.

[0032] Further, the melt extrusion operation in steps (2) and (3) is carried out in an extruder. Preferably, the temperatures of each section in the extruder are: 220-240°C in zone 1, 240-270°C in zone 2, 340-350°C in zone 3, 340-350°C in zone 4, 340-350°C in zone 5, 345-355°C in zone 6, 330-340°C in zone 7, 330-340°C in zone 8, 330-340°C in zone 9, 330-340°C in zone 10, and 360-365°C in zone 11, wherein the screw aspect ratio is 36-48 and the screw speed is 200-500rpm.

[0033] Through the above technical solution, various substances can be better integrated and the comprehensive performance of the materials can be effectively improved.

[0034] The present application is further described below through specific embodiments.

[0035] <Specific embodiment 1>

[0036] The present embodiment provides a high-performance polyetherimide ternary alloy material, whose raw materials include, by weight: 45 parts of polyetherimide, 25 parts of polyether sulfone, 25 parts of polyether ether ketone, 4.5 parts of chain extender, and 0.5 parts of antioxidant.

[0037] Its preparation method is:

[0038] (1) Weigh each raw material according to the formula, put the weighed polyetherimide and polyethersulfone into an oven for drying, the treatment is carried out at a temperature of 150° C. and the drying time is 6 hours.

[0039] (2) The polyetherimide, polyethersulfone and antioxidant dried in step (1) are mixed in a high-speed mixer for 5 minutes, and then melt-extruded to form a polyetherimide binary alloy material. The temperatures of each section in the extruder are: 240° C. in zone 1, 270° C. in zone 2, 350° C. in zone 3, 350° C. in zone 4, 350° C. in zone 5, 345° C. in zone 6, 340° C. in zone 7, 340° C. in zone 8, 330° C. in zone 9, 330° C. in zone 10, and 365° C. in zone 11, wherein the aspect ratio of the screw is 44, and the screw speed is 300 rpm.

[0040] (3) The alloy material prepared in step (2) and other raw materials are mixed in a high-speed mixer for 10 minutes, and then melt-extruded to prepare a polyetherimide ternary alloy material. The temperatures of each section in the extruder are: 260° C. in zone 1, 290° C. in zone 2, 355° C. in zone 3, 355° C. in zone 4, 355° C. in zone 5, 350° C. in zone 6, 345° C. in zone 7, 345° C. in zone 8, 340° C. in zone 9, 340° C. in zone 10, and 370° C. in zone 11, wherein the aspect ratio of the screw is 44, and the screw speed is 250 rpm.

[0041] Injection molding sample, process settings: drying temperature 150℃, drying time 4 hours, injection molding machine front section temperature 340℃, middle section temperature 350℃, rear section temperature 360℃, nozzle temperature 365 degrees, back pressure 45MPa, injection pressure 90MPa, injection speed 75mm / s, mold temperature 140℃.

[0042] The injection molded samples prepared above were tested, and the test results are shown in Table 1 below:

[0043] Table 1

[0044]

[0045] <Specific embodiment 2>

[0046] The present embodiment provides a high-performance polyetherimide ternary alloy material, whose raw materials include, by weight: 60 parts of polyetherimide, 13 parts of polyether sulfone, 25 parts of polyether ether ketone, 1 part of chain extender, and 1 part of antioxidant.

[0047] Its preparation method is:

[0048] (1) Weigh each raw material according to the formula, put the weighed polyetherimide and polyethersulfone into an oven for drying, the treatment is carried out at a temperature of 150° C. and the drying time is 6 hours.

[0049] (2) The polyetherimide, polyethersulfone and antioxidant dried in step (1) are mixed in a high-speed mixer for 5 minutes, and then melt-extruded to form a polyetherimide binary alloy material. The temperatures of each section in the extruder are: 240° C. in zone 1, 270° C. in zone 2, 350° C. in zone 3, 350° C. in zone 4, 350° C. in zone 5, 345° C. in zone 6, 340° C. in zone 7, 340° C. in zone 8, 330° C. in zone 9, 330° C. in zone 10, and 365° C. in zone 11, wherein the aspect ratio of the screw is 44, and the screw speed is 300 rpm.

[0050] (3) The alloy material prepared in step (2) and other raw materials are mixed in a high-speed mixer for 10 minutes, and then melt-extruded to prepare a polyetherimide ternary alloy material. The temperatures of each section in the extruder are: 260° C. in zone 1, 290° C. in zone 2, 355° C. in zone 3, 355° C. in zone 4, 355° C. in zone 5, 350° C. in zone 6, 345° C. in zone 7, 345° C. in zone 8, 340° C. in zone 9, 340° C. in zone 10, and 370° C. in zone 11, wherein the aspect ratio of the screw is 44, and the screw speed is 250 rpm.

[0051] Injection molding sample, process settings: drying temperature 150℃, drying time 4 hours, injection molding machine front section temperature 340℃, middle section temperature 350℃, rear section temperature 360℃, nozzle temperature 365 degrees, back pressure 45MPa, injection pressure 90MPa, injection speed 75mm / s, mold temperature 140℃.

[0052] The injection molded samples prepared above were tested, and the test results are shown in Table 2 below:

[0053] Table 2

[0054] project Eigenvalue unit Test Standards Tensile strength 5mm / min 105 MPa ASTM D638 Elongation at break 5mm / min 56 ％ ASTM D638 Tensile elastic modulus 1mm / min 3400 MPa ASTM D638 Bending strength span 50mm, 1.3mm / min 128 MPa ASTM D790 Flexural modulus 50mm, 1.3mm / min 3300 MPa ASTM D790 Notched impact strength 101 J / m ASTM D256 Unnotched impact strength 4J 920 J / m ASTM D4812

[0055] <Specific embodiment three>

[0056] The present embodiment provides a high-performance polyetherimide ternary alloy material, whose raw materials include, by weight: 60 parts of polyetherimide, 25 parts of polyether sulfone, 10 parts of polyether ether ketone, 4 parts of chain extender, and 1 part of antioxidant.

[0057] Its preparation method is:

[0058] (1) Weigh each raw material according to the formula, put the weighed polyetherimide and polyethersulfone into an oven for drying, the treatment is carried out at a temperature of 150° C. and the drying time is 6 hours.

[0059] (2) The polyetherimide, polyethersulfone and antioxidant dried in step (1) are mixed in a high-speed mixer for 5 minutes, and then melt-extruded to form a polyetherimide binary alloy material. The temperatures of each section in the extruder are: 240° C. in zone 1, 270° C. in zone 2, 350° C. in zone 3, 350° C. in zone 4, 350° C. in zone 5, 345° C. in zone 6, 340° C. in zone 7, 340° C. in zone 8, 330° C. in zone 9, 330° C. in zone 10, and 365° C. in zone 11, wherein the aspect ratio of the screw is 44, and the screw speed is 300 rpm.

[0060] (3) The alloy material prepared in step (2) and other raw materials are mixed in a high-speed mixer for 10 minutes, and then melt-extruded to prepare a polyetherimide ternary alloy material. The temperatures of each section in the extruder are: 260° C. in zone 1, 290° C. in zone 2, 355° C. in zone 3, 355° C. in zone 4, 355° C. in zone 5, 350° C. in zone 6, 345° C. in zone 7, 345° C. in zone 8, 340° C. in zone 9, 340° C. in zone 10, and 370° C. in zone 11, wherein the aspect ratio of the screw is 44, and the screw speed is 250 rpm.

[0061] Injection molding sample, process settings: drying temperature 150℃, drying time 4 hours, injection molding machine front section temperature 340℃, middle section temperature 350℃, rear section temperature 360℃, nozzle temperature 365 degrees, back pressure 45MPa, injection pressure 90MPa, injection speed 75mm / s, mold temperature 140℃.

[0062] The injection molded samples prepared above were tested, and the test results are shown in Table 3 below:

[0063] Table 3

[0064]

[0065]

[0066] <Specific embodiment 4>

[0067] This embodiment provides a high-performance polyetherimide ternary alloy material, which includes, by weight, 60 parts of polyetherimide, 20 parts of polyethersulfone, 14.5 parts of polyetheretherketone, 5 parts of chain extender, and 0.5 parts of antioxidant.

[0068] Its preparation method is:

[0069] (1) Weigh each raw material according to the formula, put the weighed polyetherimide and polyethersulfone into an oven for drying, the treatment is carried out at a temperature of 150° C. and the drying time is 6 hours.

[0070] (2) The polyetherimide, polyethersulfone and antioxidant dried in step (1) are mixed in a high-speed mixer for 5 minutes, and then melt-extruded to form a polyetherimide binary alloy material. The temperatures of each section in the extruder are: 240° C. in zone 1, 270° C. in zone 2, 350° C. in zone 3, 350° C. in zone 4, 350° C. in zone 5, 345° C. in zone 6, 340° C. in zone 7, 340° C. in zone 8, 330° C. in zone 9, 330° C. in zone 10, and 365° C. in zone 11, wherein the aspect ratio of the screw is 44, and the screw speed is 300 rpm.

[0071] (3) The alloy material prepared in step (2) and other raw materials are mixed in a high-speed mixer for 10 minutes, and then melt-extruded to prepare a polyetherimide ternary alloy material. The temperatures of each section in the extruder are: 260° C. in zone 1, 290° C. in zone 2, 355° C. in zone 3, 355° C. in zone 4, 355° C. in zone 5, 350° C. in zone 6, 345° C. in zone 7, 345° C. in zone 8, 340° C. in zone 9, 340° C. in zone 10, and 370° C. in zone 11, wherein the aspect ratio of the screw is 44, and the screw speed is 250 rpm.

[0072] Injection molding sample, process settings: drying temperature 150℃, drying time 4 hours, injection molding machine front section temperature 340℃, middle section temperature 350℃, rear section temperature 360℃, nozzle temperature 365 degrees, back pressure 45MPa, injection pressure 90MPa, injection speed 75mm / s, mold temperature 140℃.

[0073] The injection molded samples prepared above were tested, and the test results are shown in Table 4 below:

[0074] Table 4

[0075] project Eigenvalue unit Test Standards Tensile strength 5mm / min 116 MPa ASTM D638 Elongation at break 5mm / min 47 ％ ASTM D638 Tensile elastic modulus 1mm / min 3420 MPa ASTM D638 Bending strength span 50mm, 1.3mm / min 138 MPa ASTM D790 Flexural modulus 50mm, 1.3mm / min 3380 MPa ASTM D790 Notched impact strength 98 J / m ASTM D256 Unnotched impact strength 4J 900 J / m ASTM D4812

[0076] <Comparative Example>

[0077] The alloy material of this comparative example, calculated by weight, comprises: 60 parts of polyetherimide, 20 parts of polyethersulfone, 15 parts of polyetheretherketone, and 0.5 parts of antioxidant.

[0078] Its preparation method is:

[0079] (1) Weigh each raw material according to the formula, put the weighed polyetherimide, polyethersulfone and polyetheretherketone into an oven for drying at a temperature of 150° C. for 6 hours.

[0080] (2) The polyetherimide, polyethersulfone and antioxidant dried in step (1) are mixed in a high-speed mixer for 5 minutes, and then melt-extruded to form a polyetherimide binary alloy material. The temperatures of each section in the extruder are: 240° C. in zone 1, 270° C. in zone 2, 350° C. in zone 3, 350° C. in zone 4, 350° C. in zone 5, 345° C. in zone 6, 340° C. in zone 7, 340° C. in zone 8, 330° C. in zone 9, 330° C. in zone 10, and 365° C. in zone 11, wherein the aspect ratio of the screw is 44, and the screw speed is 300 rpm.

[0081] (3) The alloy material prepared in step (1) and polyetheretherketone are mixed in a high-speed mixer for 10 minutes, and then melt-extruded to prepare a polyetherimide ternary alloy material. The temperatures of each section in the extruder are: 260° C. in zone 1, 290° C. in zone 2, 355° C. in zone 3, 355° C. in zone 4, 355° C. in zone 5, 350° C. in zone 6, 345° C. in zone 7, 345° C. in zone 8, 340° C. in zone 9, 340° C. in zone 10, and 370° C. in zone 11, wherein the aspect ratio of the screw is 44, and the screw speed is 250 rpm.

[0082] Injection molding sample, process settings: drying temperature 150℃, drying time 4 hours, injection molding machine front section temperature 340℃, middle section temperature 350℃, rear section temperature 360℃, nozzle temperature 365 degrees, back pressure 45MPa, injection pressure 90MPa, injection speed 75mm / s, mold temperature 140℃.

[0083] The injection molded samples prepared above were tested, and the test results are shown in Table 5 below:

[0084] Table 5

[0085] project Eigenvalue unit Test Standards Tensile strength 5mm / min 90 MPa ASTM D638 Elongation at break 5mm / min 31 ％ ASTM D638 Tensile elastic modulus 1mm / min 3200 MPa ASTM D638 Bending strength span 50mm, 1.3mm / min 117 MPa ASTM D790 Flexural modulus 50mm, 1.3mm / min 3100 MPa ASTM D790 Notched impact strength 75 J / m ASTM D256 Unnotched impact strength 4J 780 J / m ASTM D4812

[0086] From the data in the above table, it can be seen that the mechanical properties of the modified PE I ternary alloy are better than those of the pure alloy, and the strength and toughness are improved, indicating that the compatibility of the ternary alloy is good. The blending modification reduces the melting point of the material, improves the processing performance, reduces the use cost, and improves the comprehensive performance of the material.

[0087] The technical principle of the present invention is described above in combination with specific embodiments, but it should be noted that the above descriptions are only for explaining the principle of the present invention and cannot be interpreted as a specific limitation on the protection scope of the present invention in any way. Based on the explanation here, technicians in this field can think of other specific embodiments or equivalent replacements of the present invention without paying creative work, which will fall within the protection scope of the present invention.

Claims

1. A high-performance polyetherimide ternary alloy material, characterized in that: It is composed of the following materials by mass percentage:

2. The high performance polyetherimide ternary alloy material according to claim 1, characterized in that: 45 parts of polyetherimide, 25 parts of polyethersulfone, 25 parts of polyetheretherketone, 4.5 parts of chain extender, and 0.5 parts of antioxidant.

3. The high performance polyetherimide ternary alloy material according to claim 1, characterized in that: 60 parts of polyetherimide, 13 parts of polyethersulfone, 25 parts of polyetheretherketone, 1 part of chain extender, and 1 part of antioxidant.

4. The high performance polyetherimide ternary alloy material according to claim 1, characterized in that: 60 parts of polyetherimide, 25 parts of polyethersulfone, 10 parts of polyetheretherketone, 4 parts of chain extender, and 1 part of antioxidant.

5. The high performance polyetherimide ternary alloy material according to claim 1, characterized in that: 60 parts of polyetherimide, 20 parts of polyethersulfone, 14.5 parts of polyetheretherketone, 5 parts of chain extender, and 0.5 parts of antioxidant.

6. The high performance polyetherimide ternary alloy material according to claim 1, characterized in that: The polyetherimide is made of Saudi Sabic, model: Ultem 1010; the polyethersulfone is made of Saudi Sabic, model: COLORCOMP J1000; the polyetheretherketone is made of Victrex, model: 450G; the antioxidant is Irganox 1098 from BASF; and the chain extender is SA-U980 from Quansheng Polycarbon Technology Co., Ltd.

7. A method for preparing the high-performance polyetherimide ternary alloy material according to any one of claims 1 to 6, characterized in that: The following steps are involved: S100: weighing various raw materials according to the formula, and drying the weighed polyetherimide and polyethersulfone; S200: mixing the polyetherimide, polyethersulfone and antioxidant dried in step S100 in a high-speed mixer for 5 minutes and then melt-extruding to prepare a polyetherimide binary alloy material; S300: The polyetherimide alloy material in step S200 is dried and mixed with other raw materials in a high-speed mixer for 10 minutes, and then melt-extruded to prepare a polyetherimide ternary alloy material.

8. The method for preparing a high-performance polyetherimide ternary alloy material according to claim 7, characterized in that: The drying process in step S100 is performed at a temperature of 140-160° C. and a drying time of 4-8 hours.

9. The method for preparing a high-performance polyetherimide ternary alloy material according to claim 7, characterized in that: The melt extrusion operation in steps S200 and S300 is carried out in an extruder, and the temperatures of each section in the extruder are: 220-240°C in zone 1, 240-270°C in zone 2, 340-350°C in zone 3, 340-350°C in zone 4, 340-350°C in zone 5, 345-355°C in zone 6, 330-340°C in zone 7, 330-340°C in zone 8, 330-340°C in zone 9, 330-340°C in zone 10, and 360-365°C in zone 11, wherein the screw aspect ratio is 36-48, and the screw speed is 200-500rpm.

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