PPS heat-resistant alloy material, preparation method thereof and high-temperature-resistant foam material

Abstract

The invention relates to a PPS (polyphenylene sulfide) heat-resistant alloy material, a preparation method thereof and a high-temperature-resistant foam material, and belongs to the technical field of compositions of high-molecular compounds. The PPS heat-resistant alloy material is prepared from the following components in parts by weight: 15 to 65 parts of PPS resin, 20 to 70 parts of polyarylether sulfone resin, 0.5 to 10 parts of compatilizer and 0 to 4 parts of processing aid, the melt mass flow rate of the PPS resin under the conditions of 316 DEG C and 5kg is MFR1, the melt mass flow rate of the polyether sulphone resin under the conditions of 365 DEG C and 5kg is MFR2, MFR1 is less than or equal to 300g / 10min, and MFR2 is more than or equal to 15g / 10min; the compatilizer is a copolymer containing an epoxy group. The PPS heat-resistant alloy material has high foaming ratio while keeping good heat resistance.

Description

Technical Field

[0001] The present invention relates to the technical field of compositions of high molecular compounds, and particularly relates to a PPS heat-resistant alloy material, a preparation method thereof, and a high-temperature resistant foam material. Background Art

[0002] Polymer foam materials are widely used in various fields due to their excellent properties such as light weight, high strength, heat insulation, and energy absorption. Among them, compared with other application fields, the requirements for the heat resistance and strength of materials in the fields of electronics and electrical engineering, national defense and aerospace are higher, while general polymer plastic foams (such as polypropylene, polystyrene, or thermoplastic polyurethane) often cannot meet their application requirements due to insufficient heat resistance and mechanical properties. Polyphenylene sulfide (PPS), as a high-temperature resistant semi-crystalline polymer, is currently the special engineering plastic resin with the largest application amount, and it has excellent mechanical, flame retardant, chemical corrosion resistance and other properties, and is widely used in the fields of electronics and electrical engineering, new energy vehicles, national defense and military industry. However, due to the low melt strength, high brittleness and high crystallinity of PPS, its application in foaming materials is limited. The foaming ratio of the foaming composition of the PPS composition in the prior art is relatively low, and the heat resistance of the obtained foaming material is poor. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a PPS heat-resistant alloy material, a preparation method thereof, and a high-temperature resistant foam material.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0005] In the first aspect, the present invention provides a PPS heat-resistant alloy material, which comprises the following components in parts by weight: 15-65 parts of PPS resin, 20-70 parts of polyarylether sulfone resin, 0.5-10 parts of compatibilizer, and 0-4 parts of processing aid;

[0006] The melt mass flow rate of the PPS resin under the conditions of 316 °C and 5 kg (test standard: ISO 1133:2021) is MFR1, and the melt mass flow rate of the polyarylether sulfone resin under the conditions of 365 °C and 5 kg (test standard: ISO 1133:2021) is MFR2. MFR1 ≤ 300 g / 10 min (for example, it can be any one or any range value between any two of 10 g / 10 min, 20 g / 10 min, 30 g / 10 min, 40 g / 10 min, 50 g / 10 min, 60 g / 10 min, 70 g / 10 min, 80 g / 10 min, 100 g / 10 min, 130 g / 10 min, 150 g / 10 min, 180 g / 10 min, 200 g / 10 min, 230 g / 10 min, 250 g / 10 min, 280 g / 10 min, 300 g / 10 min), and MFR2 ≥ 15 g / 10 min (for example, it can be any one or any range value between any two of 15 g / 10 min, 20 g / 10 min, 30 g / 10 min, 40 g / 10 min, 50 g / 10 min, 60 g / 10 min, 70 g / 10 min, 80 g / 10 min).

[0007] The compatibilizer is a copolymer containing epoxy groups.

[0008] The present invention combines a PPS resin with a specific melt mass flow rate and a polyarylether sulfone resin, and simultaneously synergistically acts with a compatibilizer containing epoxy groups; uses the PPS resin with a specific melt mass flow rate to enable the PPS heat-resistant alloy material to have a relatively high melt strength to support the stable formation of the cell structure during the foaming process, and uses the polyarylether sulfone resin to improve the viscoelasticity of the PPS resin and reduce the crystallinity of the system. At the same time, the epoxy groups in the compatibilizer react with the mercapto groups (-SH) at the end of the PPS resin molecular chain to form a crosslinked network, and form strong hydrogen bond interactions with the terminal hydroxyl groups (-OH) of the polyarylether sulfone resin molecular chain, thereby significantly improving its foaming performance while maintaining the good heat resistance of the PPS heat-resistant alloy material.

[0009] In the above PPS heat-resistant alloy material, the total mass percentage content of PPS resin and polyarylether sulfone resin ≥ 70%; optionally, the weight parts of PPS resin in the PPS heat-resistant alloy material can specifically be any one or the range value of any two of 15 parts, 20 parts, 25 parts, 30 parts, 35 parts, 40 parts, 45 parts, 50 parts, 55 parts, 60 parts, 65 parts, the weight parts of polyarylether sulfone resin can specifically be any one or the range value of any two of 20 parts, 25 parts, 30 parts, 35 parts, 40 parts, 45 parts, 50 parts, 55 parts, 60 parts, 65 parts, 70 parts, the weight parts of the compatibilizer can specifically be any one or the range value of any two of 0.5 parts, 1 part, 2 parts, 4 parts, 6 parts, 8 parts, 10 parts, and the weight parts of the processing aid can specifically be any one or the range value of any two of 0 part, 0.02 part, 0.1 part, 0.5 part, 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts.

[0010] The present invention has no particular limitation on the selection of the processing aid, as long as the object of the present invention can be achieved. Specifically, the processing aid includes but is not limited to antioxidants, lubricants, colorants, flame retardants, antistatic agents, etc. For example, the antioxidant can be 0.01 - 2 parts by weight, the lubricant can be 0.05 - 2 parts by weight, the colorant can be 0.01 - 2 parts by weight, the flame retardant can be 0 - 4 parts by weight, and the antistatic agent can be 0.01 - 2 parts by weight.

[0011] Optionally, the antioxidant is at least one of pentaerythritol tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate], N,N'-bis-[3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionyl] hexanediamine, octadecyl β-(4-hydroxy-3,5-di-tert-butylphenyl) propionate, dilauryl thiodipropionate, bis-(2,4-di-tert-butylphenyl) pentaerythritol diphosphite, 2,6-di-tert-butyl-4-methylphenol, and tris [2,4-di-tert-butylphenyl] phosphite; the colorant is at least one of carbon black, titanium white, zinc sulfide, and iron red; the lubricant is at least one of stearic acid amide, oleic acid amide, and silicone; the flame retardant is at least one of ammonium polyphosphate, melamine cyanurate, zinc borate, and magnesium hydroxide; and the antistatic agent is at least one of flake graphite, conductive carbon black, and alkyl sulfonate.

[0012] As a preferred embodiment of the PPS heat-resistant alloy material of the present invention, the PPS heat-resistant alloy material comprises the following components in parts by weight: 30 - 50 parts of PPS resin, 30 - 55 parts of polyarylether sulfone resin, 3 - 7 parts of compatibilizer, and 1 - 3 parts of processing aid.

[0013] As a preferred embodiment of the PPS heat-resistant alloy material of the present invention, the absolute value of MFR1 - MFR2 ≤ 240 g / 10 min, preferably 0 - 50 g / 10 min. For example, the absolute value of MFR1 - MFR2 can be any one or the range value of any two of 5 g / 10 min, 10 g / 10 min, 15 g / 10 min, 20 g / 10 min, 25 g / 10 min, 30 g / 10 min, 35 g / 10 min, 40 g / 10 min, 45 g / 10 min, 60 g / 10 min, 80 g / 10 min, 100 g / 10 min, 120 g / 10 min, 140 g / 10 min, 160 g / 10 min, 180 g / 10 min, 200 g / 10 min, 240 g / 10 min.

[0014] By regulating the difference in the melt flow rate of the PPS resin and the polyarylether sulfone resin, the dynamic viscosity matching of the two is promoted, so as to reduce the phase separation caused by the shear rate difference at the two-phase interface and promote the generation of the microphase structure. Furthermore, it is beneficial to form a homogeneous system of the PPS heat-resistant alloy material and the supercritical fluid (such as supercritical CO2), thereby better improving the foaming performance of the PPS heat-resistant alloy material.

[0015] As a preferred embodiment of the PPS heat-resistant alloy material of the present invention, the PPS heat-resistant alloy material satisfies at least one of the following conditions:

[0016] (1) 30 g / 10 min ≤ MFR1 ≤ 250 g / 10 min;

[0017] (2) 15 g / 10 min ≤ MFR2 ≤ 80 g / 10 min;

[0018] (3) The polyarylether sulfone resin includes at least one of polysulfone (PSU), polyethersulfone (PES), and polyphenylsulfone (PPSU).

[0019] Optionally, the monomer units in polysulfone include at least one of 4,4'-dichlorodiphenyl sulfone, 4,4'-difluorodiphenyl sulfone, and 2,2'-bis(4-hydroxyphenyl)propane; the monomer units in polyethersulfone include at least one of 4,4'-dichlorodiphenyl sulfone, 4,4'-difluorodiphenyl sulfone, and 4,4'-dihydroxydiphenyl sulfone; the monomer units in polyphenylsulfone include at least one of 4,4'-dichlorodiphenyl sulfone, 4,4'-difluorodiphenyl sulfone, and 4,4'-dihydroxydiphenyl sulfone.

[0020] The above polyarylether sulfone resin can be obtained through commercial purchase or self-preparation;

[0021] For example, polyphenylsulfone can be prepared by the following method: in an atmosphere protected by nitrogen, sulfolane, 4,4'-dichlorodiphenylsulfone, 4,4'-biphenol and xylene are mixed and reacted at 190-240°C for 4-20 h. After the reaction, the product is washed, precipitated and dried to obtain polyphenylsulfone; wherein, the mass ratio of sulfolane, 4,4'-dichlorodiphenylsulfone, 4,4'-biphenol to xylene is (21-22):(4.3-4.5):(2.7-2.9):(1.8-2).

[0022] For example, polysulfone can be prepared by the following method: in an atmosphere protected by nitrogen, dimethyl sulfoxide, 4,4'-dichlorodiphenylsulfone, bisphenol A and xylene are mixed and reacted at 190-240°C for 4-20 h. After the reaction, the product is washed, precipitated and dried to obtain polysulfone; wherein, the mass ratio of dimethyl sulfoxide, 4,4'-dichlorodiphenylsulfone, bisphenol A to xylene is (22-23):(4.4-4.7):(3.2-3.4):(1.6-1.9).

[0023] For example, polyethersulfone can be prepared by the following method: in an atmosphere protected by nitrogen, sulfolane, 4,4'-dichlorodiphenylsulfone, 4,4'-dihydroxydiphenylsulfone and xylene are mixed evenly and reacted at 190-240°C for 4-20 h. After the reaction, the product is washed, precipitated and dried to obtain polyethersulfone; wherein, the mass ratio of sulfolane, 4,4'-dichlorodiphenylsulfone, 4,4'-dihydroxydiphenylsulfone to xylene is (22-23):(4.8-5):(3.5-3.8):(1.5-2).

[0024] As a preferred embodiment of the PPS heat-resistant alloy material of the present invention, the compatibilizer includes a copolymer of at least one of styrene, ethylene, methacrylate, butyl acrylate, octene, ethylene and glycidyl methacrylate.

[0025] As a preferred embodiment of the PPS heat-resistant alloy material of the present invention, the mass percentage content of glycidyl methacrylate (GMA) in the copolymer (i.e., a copolymer of at least one of styrene, ethylene, methacrylate, butyl acrylate, octene, ethylene and glycidyl methacrylate) is 1.5% - 12%.

[0026] Optionally, the mass percentage content of glycidyl methacrylate in the copolymer can specifically be any one of 1.5%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12% or the range value of any two of them. By regulating the mass percentage content of glycidyl methacrylate in the copolymer within the above range, not only can the two-phase interfacial compatibility between the PPS resin and the polyarylether sulfone resin be improved to reduce phase separation, but also the increase in system viscosity caused by excessive cross-linking can be effectively prevented, thereby better promoting foaming.

[0027] The mass percentage content of glycidyl methacrylate in the copolymer can be measured by chemical titration method; the chemical titration method specifically includes the following steps: heating and refluxing m g of the sample to be measured in toluene until it dissolves, adding a standard solution of trichloroacetic acid - isopropanol with a volume of V1 (L) (concentration C1, mol / L) for thermal reflux, then adding several drops of phenolphthalein reagent, starting the swirl, after confirming that there is no flocculate precipitation in the solution, titrating with a KOH - methanol standard solution with a concentration of C2 (mol / L) at 75 °C until the color of the solution changes, and recording the volume of the standard solution consumed V2 (L); the mass percentage content of GMA in the copolymer = (C1×V1 - C2×V2) / m×100%.

[0028] As a preferred embodiment of the PPS heat-resistant alloy material of the present invention, the compatibilizer is at least one of styrene grafted glycidyl methacrylate, ethylene - methyl acrylate - glycidyl methacrylate, ethylene - butyl acrylate - glycidyl methacrylate copolymer, and polyoctene ethylene grafted glycidyl methacrylate.

[0029] In a second aspect, the present invention provides a preparation method of the above-mentioned PPS heat-resistant alloy material, including the following steps: mixing each component evenly and then melt-extruding to obtain the PPS heat-resistant alloy material.

[0030] Among them, the melt-extrusion in the above preparation method can be carried out by a twin-screw extruder, the temperature of the melt-extrusion is 270 - 350 °C, and the screw speed of the twin-screw extruder is 100 - 250 revolutions per minute.

[0031] In a third aspect, the present invention provides a high-temperature resistant foam material, which is prepared from the above-mentioned PPS heat-resistant alloy material by a supercritical foaming method. This high-temperature resistant foam can be used in fields such as electronic and electrical engineering, new energy vehicles, national defense and military industries.

[0032] Among them, the supercritical foaming method can adopt rapid pressure relief foaming, which mainly includes the following steps: placing the PPS heat-resistant alloy material in a high-pressure foaming kettle at 100-250°C, filling CO2 into the kettle body to make the pressure in the kettle reach 5-20 MPa, maintaining the temperature and pressure constantly for 0.5-20 h, then rapidly relieving the pressure and cooling and shaping to obtain the high-temperature resistant foam material.

[0033] The supercritical foaming method can also adopt rapid heating foaming, which mainly includes the following steps: placing the PPS heat-resistant alloy material in a high-pressure foaming kettle at 40-90°C, filling CO2 into the kettle body to make the pressure in the kettle reach 5-20 MPa, maintaining the temperature and pressure constantly for 0.5-20 h, then slowly relieving the pressure, quickly taking out the sample and heating it at 150-250°C for 0.5-10 min, and cooling and shaping to obtain the high-temperature resistant foam material.

[0034] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0035] The present invention combines PPS resin with a specific melt mass flow rate and polyarylethersulfone resin, and at the same time synergistically acts with a compatibilizer containing epoxy groups; uses PPS resin with a specific melt mass flow rate to make the PPS heat-resistant alloy material have a higher melt strength to support the stable formation of the cell structure during foaming, and uses polyarylethersulfone resin to improve the viscoelasticity of PPS resin and reduce the crystallinity of the system. At the same time, the epoxy groups in the compatibilizer react with the mercapto groups at the ends of the PPS resin molecular chains to form a cross-linked network and form strong hydrogen bond interactions with the terminal hydroxyl groups of the polyarylethersulfone resin molecular chains, thereby significantly improving its foaming performance while maintaining the good heat resistance of the PPS heat-resistant alloy material. Specific embodiments

[0036] To better illustrate the purpose, technical solution and advantages of the present invention, the present invention will be further described below in conjunction with specific embodiments.

[0037] Other materials, reagents, etc. used in the examples and comparative examples can be obtained from commercial channels without special instructions.

[0038] 1. Raw materials and reagents

[0039] PPS resin 1, with a melt mass flow rate of 30 g / 10 min at 316°C and 5 kg, grade PPS3503, manufacturer Zhejiang Xinhecheng Co., Ltd.

[0040] PPS resin 2, with a melt mass flow rate of 60 g / 10 min at 316°C and 5 kg, grade PPS3508, manufacturer Zhejiang Xinhecheng Co., Ltd.

[0041] PPS resin 3, with a melt mass flow rate of 70 g / 10 min at 316 °C and 5 kg, grade PPS3407, manufactured by Zhejiang New HeCheng Co., Ltd.;

[0042] PPS resin 4, with a melt mass flow rate of 180 g / 10 min at 316 °C and 5 kg, grade PPS3418, manufactured by Zhejiang New HeCheng Co., Ltd.;

[0043] PPS resin 5, with a melt mass flow rate of 250 g / 10 min at 316 °C and 5 kg, grade PPS1130C, manufactured by Zhejiang New HeCheng Co., Ltd.;

[0044] PPS resin 6, with a melt mass flow rate of 500 g / 10 min at 316 °C and 5 kg, grade PPSQ250, manufactured by Shandong Binzhou Binyang Chemical Co., Ltd.;

[0045] Polyarylether sulfone resin 1 (polyphenyl sulfone), with a melt mass flow rate of 15 g / 10 min at 365 °C and 5 kg, self-made;

[0046] Polyarylether sulfone resin 2 (polyphenyl sulfone), with a melt mass flow rate of 25 g / 10 min at 365 °C and 5 kg, self-made;

[0047] Polyarylether sulfone resin 3 (polyphenyl sulfone), with a melt mass flow rate of 50 g / 10 min at 365 °C and 5 kg, self-made;

[0048] Polyarylether sulfone resin 4 (polysulfone), with a melt mass flow rate of 52 g / 10 min at 365 °C and 5 kg, self-made;

[0049] Polyarylether sulfone resin 5 (polyethersulfone), with a melt mass flow rate of 48 g / 10 min at 365 °C and 5 kg, self-made;

[0050] Polyarylether sulfone resin 6 (polyphenyl sulfone), with a melt mass flow rate of 8 g / 10 min at 365 °C and 5 kg, self-made;

[0051] The above polyphenyl sulfone was prepared by the following method:

[0052] Under a nitrogen protection atmosphere, 21.5 kg of sulfolane, 4.38 kg of 4,4'-dichlorodiphenyl sulfone, 2.815 kg of 4,4'-biphenol, and 1.9 kg of xylene are quantitatively added into a reaction kettle, and then the temperature is raised for reaction. The heating rate is 0.3 - 6 °C / min, the reaction temperature is controlled between 190 - 240 °C, and the reaction time is 4 - 20 h. After the reaction is completed, a reaction solvent is added to the reaction system and stirred evenly. After the solution is coagulated and precipitated in a precipitation bath, washed with water and dried, polyphenyl sulfone is obtained.

[0053] The melt mass flow rate of the polyphenyl sulfone resin is adjusted by controlling the reaction time. The melt mass flow rate of the polyphenyl sulfone increases with the increase of the reaction time and decreases with the decrease of the reaction time.

[0054] The above polysulfone can be prepared by the following method:

[0055] Under a nitrogen protection atmosphere, 22.5 kg of dimethyl sulfoxide, 4.55 kg of 4,4'-dichlorodiphenyl sulfone, 3.275 kg of bisphenol A, and 1.75 kg of xylene are quantitatively added into a reaction kettle, and then the temperature is raised for reaction. The heating rate is 0.3 - 6 °C / min, the reaction temperature is controlled between 190 - 240 °C, and the reaction time is 4 - 20 h. After the reaction is completed, a reaction solvent is added to the reaction system and stirred evenly. After the solution is coagulated and precipitated in a precipitation bath, washed with water and dried, polysulfone is obtained.

[0056] The above polyethersulfone can be prepared by the following method:

[0057] Under a nitrogen protection atmosphere, 22.5 kg of sulfolane, 4.9 kg of 4,4'-dichlorodiphenyl sulfone, 3.65 kg of 4,4'-dihydroxy diphenyl sulfone, and 1.75 kg of xylene are quantitatively added into a reaction kettle, and then the temperature is raised for reaction. The heating rate is 0.3 - 6 °C / min, the reaction temperature is controlled between 190 - 240 °C, and the reaction time is 4 - 20 h. After the reaction is completed, a reaction solvent is added to the reaction system and stirred evenly. After the solution is coagulated and precipitated in a precipitation bath, washed with water and dried, polyethersulfone is obtained.

[0058] Compatibilizer 1 (ethylene-methyl acrylate-glycidyl methacrylate), the mass percentage content of GMA is 5%, the grade is ELVALOY PTW, and the manufacturer is DuPont, USA;

[0059] Compatibilizer 2 (styrene-grafted glycidyl methacrylate), the mass percentage content of GMA is 6%, the grade is SG-06, and the manufacturer is Shanghai Jiayirong Polymer Co., Ltd.;

[0060] Compatibilizer 3 (polyethylene-octene graft glycidyl methacrylate), with a GMA mass percentage of 3%, grade SG-03, manufactured by Shanghai Jiayirong Polymer Co., Ltd.;

[0061] Compatibilizer 4 (bisphenol A epoxy resin), grade 0199, manufactured by Nantong Xingchen Synthetic Materials Co., Ltd.;

[0062] Compatibilizer 5 (maleic anhydride), manufactured by Karamay Jinyuan Fine Chemical Co., Ltd.;

[0063] Antioxidant (N,N'-bis-[3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionyl] hexanediamine), grade RIANOX 1098, manufactured by Tianjin Lian An Long Co., Ltd.;

[0064] Colorant (carbon black), grade M717, manufactured by Cabot Corporation, USA.

[0065] 2. Preparation method of the PPS heat-resistant alloy material of the present invention

[0066] According to the formula, after mixing each component evenly, it is added to a twin-screw extruder for melt extrusion to obtain the PPS heat-resistant alloy material; among them, the temperature of melt extrusion is 270-350°C, and the screw speed of the twin-screw extruder is 100-250 revolutions per minute.

[0067] Table 1 Weight parts of each component of the PPS heat-resistant alloy material in Examples 1-13

[0068]

[0069] MFR1 in Table 1 is the melt mass flow rate of PPS resin under the conditions of 316°C and 5 kg, and MFR2 is the melt mass flow rate of polyarylether sulfone resin under the conditions of 365°C and 5 kg.

[0070] Table 2 Weight parts of each component of the PPS heat-resistant alloy material in Examples 14-17 and Comparative Examples 1-4

[0071]

[0072]

[0073] MFR1 in Table 2 is the melt mass flow rate of PPS resin under the conditions of 316°C and 5 kg, and MFR2 is the melt mass flow rate of polyarylether sulfone resin under the conditions of 365°C and 5 kg.

[0074] 3. Performance testing

[0075] 1) Foaming ratio: The PPS heat-resistant alloy materials in each example and comparative example were injection-molded into square plates with dimensions of 100 mm × 100 mm × 2 mm (injection temperature: 280 - 350 °C). Then, the square plates were placed in a high-pressure foaming autoclave at 200 °C, and CO2 was filled into the autoclave body until the pressure inside the autoclave reached 15 MPa. It was kept at a constant temperature and pressure for 4 h, and then the pressure was rapidly released. The samples were taken out and cooled and shaped by water, thus completing the foaming. The density before foaming ρ1 and the density after foaming ρ2 were measured by the density method (ISO 845:2006), and then the foaming ratio = ρ1 / ρ2 was calculated.

[0076] 2) Thermal decomposition temperature: The thermal decomposition temperature of the PPS heat-resistant alloy materials in each example and comparative example was tested by non-isothermal thermogravimetry (TGA) method in accordance with the ISO 11358-1:2022 standard to evaluate their thermal stability.

[0077] Table 3 Properties of PPS heat-resistant alloy materials in each example and comparative example

[0078]

[0079]

[0080] According to the data in Table 3, it can be seen that the thermal decomposition temperature of the PPS heat-resistant alloy materials in Examples 1 - 17 is ≥ 445 °C, and the foaming ratio is ≥ 6, indicating that the PPS heat-resistant alloy materials of the present invention have both high heat resistance and high foaming ratio. At the same time, it can be seen from Comparative Examples 1 and 4 that if the melt mass flow rate of the PPS resin is too large or the melt mass flow rate of the polyarylethersulfone resin is too small, the foaming ratio of the PPS heat-resistant alloy materials will be significantly reduced. In addition, it can be found from Comparative Examples 2 and 3 that it is difficult to improve the foaming ratio of the PPS heat-resistant alloy materials while maintaining a relatively high thermal decomposition temperature when using bisphenol A epoxy resin or maleic anhydride as the compatibilizer.

[0081] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention rather than to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A PPS heat-resistant alloy material, characterized in that, By weight parts, it includes the following components: 15 - 65 parts of PPS resin, 20 - 70 parts of polyarylether sulfone resin, 0.5 - 10 parts of compatibilizer, 0 - 4 parts of processing aid; The melt mass flow rate of the PPS resin under the conditions of 316 °C and 5 kg is MFR1, and the melt mass flow rate of the polyarylether sulfone resin under the conditions of 365 °C and 5 kg is MFR2. MFR1 ≤ 300 g / 10 min, MFR2 ≥ 15 g / 10 min; The compatibilizer is a copolymer containing epoxy groups.

2. The PPS heat-resistant alloy material according to claim 1, characterized in that The PPS heat-resistant alloy material includes the following components by weight parts: 30 - 50 parts of PPS resin, 30 - 55 parts of polyarylether sulfone resin, 3 - 7 parts of compatibilizer, 1 - 3 parts of processing aid.

3. The PPS heat-resistant alloy material according to claim 1, characterized in that The absolute value of MFR1 - MFR2 ≤ 240 g / 10 min.

4. The PPS heat-resistant alloy material according to claim 3, characterized in that, The absolute value of MFR1 - MFR2 is 0 - 50 g / 10 min.

5. The PPS heat-resistant alloy material according to claim 1, characterized in that, The PPS heat-resistant alloy material satisfies at least one of the following conditions: (1) 30 g / 10 min ≤ MFR1 ≤ 250 g / 10 min; (2) 15 g / 10 min ≤ MFR2 ≤ 80 g / 10 min; (3) The polyarylether sulfone resin includes at least one of polysulfone, polyethersulfone, and polyphenylsulfone.

6. The PPS heat-resistant alloy material according to claim 1, wherein, The compatibilizer includes a copolymer of at least one of styrene, ethylene, methyl methacrylate, butyl acrylate, octene, ethylene and glycidyl methacrylate.

7. The PPS heat-resistant alloy material according to claim 6, characterized in that, The mass percentage content of glycidyl methacrylate in the copolymer is 1.5% - 12%.

8. The PPS heat-resistant alloy material according to claim 6, characterized in that, The compatibilizer is at least one of styrene-grafted glycidyl methacrylate, ethylene-methyl methacrylate-glycidyl methacrylate, ethylene-butyl acrylate-glycidyl methacrylate copolymer, and polyoctene ethylene-grafted glycidyl methacrylate.

9. The preparation method of the PPS heat-resistant alloy material according to any one of claims 1 to 8, characterized in that, It includes the following steps: Mix each component evenly and then melt-extrude to obtain the PPS heat-resistant alloy material.

10. A high-temperature resistant foam material, characterized in that, It is prepared by the supercritical foaming method from the PPS heat-resistant alloy material described in any one of claims 1 - 8.

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