CN110669340B - PPSU/PTFE/TPEE wear-resistant high-impact-resistant resin composition and preparation method and application thereof - Google Patents
PPSU/PTFE/TPEE wear-resistant high-impact-resistant resin composition and preparation method and application thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L81/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen or carbon only; Compositions of polysulfones; Compositions of derivatives of such polymers
- C08L81/06—Polysulfones; Polyethersulfones
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/06—Installations of electric cables or lines in or on the ground or water in underground tubes or conduits; Tubes or conduits therefor
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- 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
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- C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
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Abstract
The invention discloses a PPSU/PTFE/TPEE wear-resistant high impact-resistant resin composition, which comprises the following components in parts by weight: polyphenylene Sulfone (PPSU) resin: 30-70 parts of a solvent; polytetrafluoroethylene (PTFE) powder: 10-30 parts; TPEE resin: 20-40 parts of a solvent; active flaky alpha alumina: 10-25 parts; flake graphite: 5-15 parts of a solvent; a compatilizer: 3-10 parts; lubricant: 0.5-1.5 parts; dispersing agent: 0.5-2 parts; weather resisting agent: 0.5-2 parts. The invention has the following beneficial effects: the high-strength PPSU engineering plastic is used as matrix resin, compounded with polytetrafluoroethylene powder, TPEE resin, active flaky alpha alumina, flaky graphite, a compatilizer, a lubricant and other processing aids, the wear resistance of the PPSU material is improved by utilizing the special self-lubricating property of the polytetrafluoroethylene powder, the lubricating property of relative sliding of flaky graphite sheets and the high-rigidity synergistic effect of the active flaky alpha alumina, and the defect that the wear resistance of the PPSU material is insufficient is overcome.
Description
Technical Field
The invention relates to a power cable sheath pipe support, in particular to a PPSU/PTFE/TPEE wear-resistant high-impact-resistance power cable sheath pipe support and a preparation method thereof.
Background
In recent years, with the rapid development of Chinese economy and the rapid advance of urbanization process, new towns are newly built in various places, old towns are transformed, various industrial parks are under large-scale construction, urban underground pipe networks are increasingly increased, and the scale of various pipelines is continuously expanded.
In the past, cables in cities and towns in China are mostly laid in an overhead mode, the appearance is not attractive, city construction is influenced, along with social progress, a method that power cable protective sleeves are laid underground and the cables enter the ground is adopted basically at present, construction is simple and rapid, and ground traffic and construction are not influenced.
The utility model provides a power cable protecting pipe support also is called pipe pillow or conduit saddle, can effectively fix and support the pipeline in the laying process of power cable protecting pipe, prevent to shift and overcome the influence that external vibrations brought, be the important component part of power cable protecting pipe laying process, traditional power cable protecting pipe support mainly adopts CPVC or HDPE material, these two kinds of materials ubiquitous intensity are not enough, shortcoming such as wear-resisting and shock resistance are not enough, because of external vibrations wearing and tearing deformation or dislocation easily in the use, cause the collapse or damage of power cable pipeline. While the related patents of the power cable sheath tube support are mostly the structural design of the support or the tube pillow, for example, the Chinese patent document CN201120368252.1 discloses a cable composite tube pillow, which adopts the combination of a pillow strip and a bayonet lock and adopts the corresponding face clamping grooves arranged at the two ends of the four faces of the outer ring of the tube pillow so that the tube pillows can be connected with each other through the face clamping grooves and the bayonet lock, thereby the cable protection pipes are mutually connected and fixed together, not only the protection pipes are orderly, and the whole compressive resistance is enhanced, patent document CN201721801373.4 discloses a polymer composite material pipe pillow, which comprises a top arc supporting surface, an inner supporting surface and an outer supporting surface, is convenient to conform to the external structure of a pipeline, the pipeline can be more stable in the supporting process, and relevant patents and documents do not exist about the material of the power cable sheath pipe bracket, in particular to the PPSU/PTFE/TPEE wear-resistant high-impact power cable sheath pipe bracket.
Disclosure of Invention
The invention aims to provide a PPSU/PTFE/TPEE wear-resistant high-impact-resistant resin composition, a preparation method and application thereof, and solves the defects of insufficient rigidity, poor wear resistance and poor impact resistance of a traditional CPVC or HDPE power cable sheath pipe support and the like.
In order to achieve the purpose, the invention provides the following technical scheme:
the PPSU/PTFE/TPEE wear-resistant high impact-resistant resin composition comprises the following components in parts by weight:
preferably, the preparation method of the active flaky alpha alumina comprises the following steps:
dissolving nonylphenol polyoxyethylene ether and ammonium bicarbonate in 100mL of deionized water, and adjusting the pH value to 9-9.5 to obtain a solution A;
dissolving fatty alcohol-polyoxyethylene ether ammonium sulfate and aluminum ammonium sulfate in 100mL of deionized water to obtain a solution B;
dropwise adding the solution B into the solution A, uniformly mixing, and carrying out hydrothermal reaction at 130 ℃ to obtain ammonium aluminum carbonate;
calcining the ammonium aluminum carbonate at 1100 ℃ to obtain flaky alpha alumina;
adding the flaky alpha alumina into ethanol, heating to 80-90 ℃, adding a silane coupling agent while stirring, carrying out reflux reaction for 1h, and then heating to 110 ℃ to obtain the active flaky alpha alumina.
Preferably, the polyphenylene sulfone resin is a linear polymer prepared by reacting polyphenylene sulfide with peracetic acid, and has a melt flow rate of 17g/10min (365 ℃,5.0kg) and a density of 1.29g/cm3。
Preferably, the polytetrafluoroethylene powder is suspension polytetrafluoroethylene ultrafine powder, the number average molecular weight is 10000-30000 daltons, and the average particle size is 2-5 μm.
Preferably, the TPEE resin is a block copolymer containing a polyester hard segment and a polyether soft segment, the Shore hardness is 50D, and the density is 1.17g/cm3The water content is less than or equal to 0.1 percent.
As a preferred scheme, the fixed carbon content of the crystalline flake graphite is more than or equal to 95%, and the crystal grain size is less than or equal to 0.3-0.5 mm.
Preferably, the compatilizer is selected from one or two of SEBS-g-MAH and SBS-g-MAH, and the grafting rate is more than or equal to 1%; the lubricant is selected from one or two of EBS and calcium stearate; the dispersing agent is selected from one or two of N, N-ethylene bis stearamide and stearic acid; the weather resistant agent is formed by mixing an ultraviolet absorbent UV-531 (component: 2-hydroxy-4-n-octoxybenzophenone) and an antioxidant 1010 (component: tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester) according to the weight ratio of 1-5: 1.
A method for preparing the aforementioned PPSU/PTFE/TPEE abrasion-resistant high impact resin composition, comprising the steps of:
adding active flaky alpha alumina and crystalline flake graphite into a high-speed mixer, heating to 90-110 ℃, stirring at the rotating speed of 200rpm/min for 0.5h, sequentially adding a dispersing agent and a lubricating agent, stirring at the rotating speed of 400rpm/min at the temperature of 90-110 ℃ for 30min, cooling to room temperature, sequentially adding polyphenylene sulfone resin, polytetrafluoroethylene powder, TPEE resin, a compatilizer and a weather resistant agent, uniformly stirring, and discharging to obtain a PPSU/PTFE/TPEE blend;
and (2) melting, extruding and granulating the PPSU/PTFE/TPEE blend material through a double-screw extruder, and controlling the working parameters of the double-screw extruder as follows: the temperature of the first zone is 100-120 ℃, the temperature of the second zone is 260-295 ℃, the temperature of the third zone is 310-345 ℃, the temperature of the fourth zone is 345-360 ℃, the temperature of the fifth zone is 350-370 ℃, the temperature of the die head is 345-360 ℃, the feeding speed is 20-50 r/min, the rotating speed of the screw is 100-150 r/min, and the PPSU/PTFE/TPEE wear-resistant high impact resin composition is prepared through extrusion granulation.
Use of a PPSU/PTFE/TPEE abrasion resistant high impact resin composition as described above in a power cable sheath holder.
As a preferred scheme, the preparation method of the power cable sheath bracket comprises the following steps:
drying the PPSU/PTFE/TPEE wear-resistant high impact-resistant resin composition at 100-110 ℃ for 12 hours, adding the dried PPSU/PTFE/TPEE wear-resistant high impact-resistant resin composition into a plastic injection molding machine, and controlling the technological parameters of the plastic injection molding machine as follows: barrel temperature: 320-360 ℃, mold temperature: 130-180 ℃, the back pressure is less than or equal to 50Pa, and the rotating speed of the screw is 0.1-0.3 m/s, so as to obtain the power cable sheath bracket.
Compared with the prior art, the invention has the following beneficial effects:
the invention adopts high-strength PPSU engineering plastic as matrix resin, compounds polytetrafluoroethylene powder, TPEE resin, active flaky alpha alumina, flaky graphite, a compatilizer, a lubricant and other processing aids, utilizes the special self-lubricating property of the polytetrafluoroethylene powder, the lubricating property of the flaky graphite sheet layer in relative sliding and the high rigidity synergistic effect of the active flaky alpha alumina to improve the wear resistance of the PPSU material, and solves the defect of insufficient wear resistance of the PPSU material. Meanwhile, a TPEE elastic material is innovatively adopted, the problem of insufficient impact strength of a PPSU material is solved, the problem of reduction of impact performance of the material caused by addition of crystalline flake graphite and active flaky alpha alumina is solved, and the PPSU/PTFE/TPEE wear-resistant high-impact-resistance power cable sheath pipe support is prepared.
Drawings
Fig. 1 is an SEM photograph of active flaky alpha alumina in the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
In the following examples and comparative examples, the following ingredients were used for each raw material:
polyphenylene Sulfone (PPSU) resin: the linear polymer prepared by reacting polyphenylene sulfide with peracetic acid has melt flow rate of 17g/10min (365 ℃,5.0kg) and density of 1.29g/cm3Selected from suwei, usa.
Polytetrafluoroethylene (PTFE) powder: the suspension method is polytetrafluoroethylene superfine powder, and the molecular weight is as follows: 10000-: 2-5 μm, selected from Suwei.
TPEE resin: the block copolymer containing hard polyester segment and soft polyether segment has Shore hardness of 50D and density of 1.17g/cm3The water content is less than or equal to 0.1 percent and is selected from DuPont in America.
CPVC resin: chlorine content: 64-75% of Keyya chemical industry.
HDPE resin: injection grade selected from the Mount-mountain petrochemical DMDA-8008.
Active flaky alpha alumina: 5-20 mu m of flake crystal size, 3-8 of diameter-thickness ratio and less than or equal to 25g/100g of oil absorption value, and is self-made.
Flake graphite: the fixed carbon content is more than or equal to 95 percent, the crystal grain diameter is less than or equal to 0.3-0.5mm, and the crystal grain is selected from a happy mineral product processing factory in Lingshou county.
A compatilizer: SEBS-g-MAH and SBS-g-MAH, the grafting ratio is more than or equal to 1%, and the SEBS-g-MAH and SBS-g-MAH are selected from American Keteng.
Lubricant: EBS and calcium stearate are commercially available products.
Dispersing agent: the N, N-ethylene bis stearamide and the stearic acid are commercially available products.
Weather resisting agent: the ultraviolet absorber UV-531 (ingredient: 2-hydroxy-4-n-octyloxybenzophenone) and the antioxidant 1010 (ingredient: tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester) were mixed in a weight ratio of 1-5:1, and were selected from Guangzhou Yantai chemical Co., Ltd.
Examples 1 to 5 and comparative examples 1 to 5:
TABLE 1 Components and proportions of examples 1-5 and comparative examples 1-5
The preparation process comprises the following steps:
1. the active flaky alpha alumina is prepared by the following method:
step A: accurately weighing 10g of nonylphenol polyoxyethylene ether and 5g of ammonium bicarbonate, dissolving in 100mL of deionized water to form a transparent solution, and adding ammonia water into the solution to adjust the pH value of the solution to 9-9.5 to obtain a solution A.
And B: 10g of ammonium fatty alcohol polyoxyethylene ether sulfate and 5g of ammonium aluminum sulfate are accurately weighed and dissolved in 100mL of deionized water to form a transparent solution B.
And C: transferring the solution A into a reaction kettle with a polytetrafluoroethylene lining. And slowly dripping the solution B into the solution A while stirring at the stirring speed of 300r/min, keeping the temperature at 130 ℃ for 20 hours, filtering, washing and filtering to obtain a precursor ammonium aluminum carbonate.
Step D: and D, calcining the precursor ammonium aluminum carbonate obtained in the step C at the temperature of 1100 ℃ for 2.5 hours to obtain the flaky alpha alumina.
Step E: accurately weighing 10g of flaky alpha alumina, adding the flaky alpha alumina into a flask filled with 100mL of ethanol, heating the mixture to 80-90 ℃, adding 0.3g of silane coupling agent while stirring, carrying out reflux reaction for 1h, then heating the mixture to 110 ℃ to obtain active flaky alpha alumina, wherein the size of the obtained active flaky alpha alumina is 5-20 mu m, the diameter-thickness ratio is 3-8, the oil absorption value is less than or equal to 25g/100g, and the SEM photograph of the active flaky alpha alumina is shown in figure 1.
2. The preparation method of the PPSU/PTFE/TPEE wear-resistant high-impact-resistance power cable sheath pipe support comprises the following steps:
s1: blend preparation
Adding active flaky alpha alumina and crystalline flake graphite into a high-speed mixer according to parts by weight, heating to 90-110 ℃, stirring at the rotating speed of 200rpm/min for 0.5h, sequentially adding a dispersing agent and a lubricating agent, stirring at the rotating speed of 400rpm/min at the temperature of 90-110 ℃ for 30min, cooling to room temperature, sequentially adding polyphenylene sulfone resin, polytetrafluoroethylene powder, TPEE resin, a compatilizer and a weather resistant agent, uniformly stirring, and discharging to obtain a PPSU/PTFE/TPEE wear-resistant high-impact power cable sheath pipe support blend;
s2: preparation of modified Material
And (4) melting, extruding and granulating the blended material obtained in the step S1 through a double-screw extruder, and controlling the working parameters of the double-screw extruder as follows: the temperature of a first zone is 100-120 ℃, the temperature of a second zone is 260-295 ℃, the temperature of a third zone is 310-345 ℃, the temperature of a fourth zone is 345-360 ℃, the temperature of a fifth zone is 350-370 ℃, the temperature of a die head is 345-360 ℃, the feeding speed is 20-50 r/min, the rotating speed of a screw is 100-150 r/min, and the modified material is extruded and granulated to prepare the PPSU/PTFE/TPEE wear-resistant high-impact-resistance power cable sheath pipe support;
s3: stent preparation
Drying the modified material prepared in the step S2 in a hot air dryer at 100-110 ℃ for 12h, adding the dried material into a plastic injection molding machine, and controlling the technological parameters of the plastic injection molding machine as follows: barrel temperature: 320-360 ℃, mold temperature: 130-180 ℃, the back pressure is less than or equal to 50Pa, and the rotating speed of the screw is 0.1-0.3 m/s.
The formula material of the invention is mainly characterized in that: the high-strength PPSU engineering plastic is used as matrix resin, compounded with polytetrafluoroethylene powder, TPEE resin, active flaky alpha alumina, flaky graphite, a compatilizer, a lubricant and other processing aids, the wear resistance of the PPSU material is improved by utilizing the special self-lubricating property of the polytetrafluoroethylene powder, the lubricating property of relative sliding of flaky graphite sheets and the high-rigidity synergistic effect of the active flaky alpha alumina, and the defect that the wear resistance of the PPSU material is insufficient is overcome. Meanwhile, a TPEE elastic material is innovatively adopted, the problem of insufficient impact strength of a PPSU material is solved, the problem of reduction of impact performance of the material caused by addition of crystalline flake graphite and active flaky alpha alumina is solved, and the PPSU/PTFE/TPEE wear-resistant high-impact-resistance power cable sheath pipe support is prepared.
Performance testing and result evaluation
The flexural modulus of the samples obtained in the above examples 1 to 5 and comparative examples 1 to 5 is determined according to GB/T9341-2008 ' determination of plastic flexural performance ', and the impact strength of the notch of the simple beam is determined according to GB/T1043.2-2018 ' determination of impact performance of the plastic simple beam part 2: an instrumented impact test, wherein the quality abrasion is subjected to a performance test according to GB/T3960-2016 plastic sliding friction abrasion test method; the test results are shown in table 2.
TABLE 2 test results of examples 1 to 5 and comparative examples 1 to 5
The smaller the mass wear, the better the wear resistance
As can be seen from the test results in Table 2, examples 1-5 and comparative examples 1-5, examples 1-5 of the present invention are significantly superior to comparative examples 1-5 in impact strength and abrasion resistance, particularly due to the conventional support materials made of CPVC and HDPE, as demonstrated by the data: the high-strength PPSU engineering plastic is used as matrix resin, compounded with polytetrafluoroethylene powder, TPEE resin, active flaky alpha alumina, flaky graphite, a compatilizer, a lubricant and other processing aids, the wear resistance of the PPSU material is improved by utilizing the special self-lubricating property of the polytetrafluoroethylene powder, the lubricating property of relative sliding of flaky graphite sheets and the high-rigidity synergistic effect of the flaky alpha alumina, and the defect that the wear resistance of the PPSU material is insufficient is overcome. Meanwhile, a TPEE elastic material is innovatively adopted, the problem of insufficient impact strength of a PPSU material is solved, the problem of reduction of impact performance of the material caused by addition of crystalline flake graphite and active flaky alpha alumina is solved, and the PPSU/PTFE/TPEE wear-resistant high-impact-resistance power cable sheath pipe support is prepared. The invention adopts the most preferable formula in the embodiment 3, so that the impact property, the flexural modulus and the wear resistance of the material reach the most balanced state, and the material has good economic benefit and social benefit.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (8)
1. The PPSU/PTFE/TPEE wear-resistant high impact-resistant resin composition is characterized by comprising the following components in parts by weight:
the preparation method of the active flaky alpha alumina comprises the following steps:
dissolving nonylphenol polyoxyethylene ether and ammonium bicarbonate in 100mL of deionized water, and adjusting the pH value to 9-9.5 to obtain a solution A;
dissolving fatty alcohol-polyoxyethylene ether ammonium sulfate and aluminum ammonium sulfate in 100mL of deionized water to obtain a solution B;
dropwise adding the solution B into the solution A, uniformly mixing, and carrying out hydrothermal reaction at 130 ℃ to obtain ammonium aluminum carbonate;
calcining the ammonium aluminum carbonate at 1100 ℃ to obtain flaky alpha alumina;
adding the flaky alpha alumina into ethanol, heating to 80-90 ℃, adding a silane coupling agent while stirring, carrying out reflux reaction for 1h, and then heating to 110 ℃ to obtain active flaky alpha alumina;
the fixed carbon content of the crystalline flake graphite is not less than 95%, and the grain size of the crystalline flake graphite is not more than 0.3-0.5 mm.
2. The PPSU/PTFE/TPEE abrasion-resistant high impact resin composition according to claim 1, wherein the polyphenylene sulfone resin is a linear polymer prepared by reacting polyphenylene sulfide with peracetic acid, and has a melt flow rate of 17g/10min at 365 ℃ under 5kg and a density of 1.29g/cm3。
3. The PPSU/PTFE/TPEE abrasion-resistant high impact resin composition according to claim 1, wherein the polytetrafluoroethylene powder is suspension polytetrafluoroethylene ultrafine powder, the number average molecular weight is 10000-30000 daltons, and the average particle size is 2-5 μm.
4. The PPSU/PTFE/TPEE abrasion-resistant high impact resin composition according to claim 1, wherein the TPEE resin is a block copolymer comprising a polyester hard segment and a polyether soft segment, has a Shore hardness of 50D and a density of 1.17g/cm3The water content is less than or equal to 0.1 percent.
5. The PPSU/PTFE/TPEE abrasion-resistant high impact resin composition according to claim 1, wherein the compatibilizer is one or two selected from SEBS-g-MAH and SBS-g-MAH, and the grafting ratio is more than or equal to 1%; the lubricant is selected from one or two of EBS and calcium stearate; the dispersing agent is selected from one or two of N, N-ethylene bis stearamide and stearic acid; the weather-resistant agent is formed by mixing an ultraviolet absorbent UV-531 (component: 2-hydroxy-4-n-octoxybenzophenone) and an antioxidant 1010 (component: pentaerythrityl tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate) according to the weight ratio of 1-5: 1.
6. A method for preparing the PPSU/PTFE/TPEE abrasion-resistant high impact resin composition as defined in any one of claims 1 to 5, which comprises the following steps:
adding active flaky alpha alumina and crystalline flake graphite into a high-speed mixer, heating to 90-110 ℃, stirring at the rotating speed of 200rpm for 0.5h, sequentially adding a dispersing agent and a lubricating agent, stirring at the rotating speed of 400rpm at the temperature of 90-110 ℃ for 30min, cooling to room temperature, sequentially adding polyphenylene sulfone resin, polytetrafluoroethylene powder, TPEE resin, a compatilizer and a weather-resistant agent, uniformly stirring, and discharging to obtain a PPSU/PTFE/TPEE blend;
and (2) melting, extruding and granulating the PPSU/PTFE/TPEE blend material through a double-screw extruder, and controlling the working parameters of the double-screw extruder as follows: the temperature of the first zone is 100-120 ℃, the temperature of the second zone is 260-295 ℃, the temperature of the third zone is 310-345 ℃, the temperature of the fourth zone is 345-360 ℃, the temperature of the fifth zone is 350-370 ℃, the temperature of the die head is 345-360 ℃, the feeding speed is 20-50 r/min, the rotating speed of the screw is 100-150 r/min, and the PPSU/PTFE/TPEE wear-resistant high impact resin composition is prepared through extrusion granulation.
7. Use of the PPSU/PTFE/TPEE abrasion resistant high impact resin composition of claim 1 in a power cable jacket support.
8. Use according to claim 7, wherein the power cable sheath holder is prepared by a method comprising:
drying the PPSU/PTFE/TPEE wear-resistant high impact-resistant resin composition at 100-110 ℃ for 12 hours, adding the dried PPSU/PTFE/TPEE wear-resistant high impact-resistant resin composition into a plastic injection molding machine, and controlling the technological parameters of the plastic injection molding machine as follows: barrel temperature: 320-360 ℃, mold temperature: 130-180 ℃, the back pressure is less than or equal to 50Pa, and the rotating speed of the screw is 0.1-0.3 m/s, so as to obtain the power cable sheath bracket.
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| CN105504814A (en) * | 2015-12-25 | 2016-04-20 | 成都新柯力化工科技有限公司 | Poly(phenylene sulfone) composition for 3D printing and preparation method thereof |
| CN109206841A (en) * | 2018-02-26 | 2019-01-15 | 大连疆宇新材料科技有限公司 | A kind of high-strength abrasion-proof aromatic series composite material and preparation method and application |
| CN109722025A (en) * | 2018-12-28 | 2019-05-07 | 珠海万通特种工程塑料有限公司 | A kind of polyether sulphone composite material and its application |
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