CN105086135A - Graphene-modified aramid-fiber-reinforced polypropylene composite material - Google Patents
Graphene-modified aramid-fiber-reinforced polypropylene composite material Download PDFInfo
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- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/34—Polyamides
- D06M2101/36—Aromatic polyamides
Abstract
The invention discloses a graphene-modified aramid-fiber-reinforced polypropylene composite material. The material is prepared from the following components by mass: 10 to 20% of grapheme-modified aramid fiber, 10 to 15% of a toughening agent, 3.4 to 4.2% of a light stabilizer, 1.7 to 2.6% of an antioxidant and 2 to 4% of a dispersing agent, with the balance being polypropylene resin. According to the invention, the graphene-modified aramid fiber is used as a reinforcing component of a polypropylene composite material, and an integral formula is optimally designed, so the obtained grapheme-modified aramid-fiber-reinforced polypropylene composite material has good processing forming property and mechanical property; binding force between fiber and a matrix is effectively improved, and processing property and mechanical property of a composite material are improved; meanwhile, the preparation method has simple steps and strong operability and is suitable for large-scale industrial production.
Description
Technical field
The present invention relates to technical field of polymer materials, especially relate to a kind of Graphene modification of aramid fiber Reinforced Polypropylene material and preparation method thereof.
Background technology
Polypropylene (pp) is that a kind of cost is low, excellent performance, broad-spectrum macromolecular material, belong to thermoplastic resin, intensity and initial modulus are all higher, fusing point low (160 ~ 175 DEG C), therefore easy in body material consolidation fibre, and the polypropylene composite material obtained has features such as good toughness, impact are strong, reproducible utilization, can greatly improve its range of application.
Fiber is as the enhancement component in polypropylene composite material, and it mainly contains glass fibre, carbon fiber, boron fibre, sapphire whisker etc., and due to factors such as prices, except glass fibre, other fibers are expensive, do not possess the prospect of extensive application.But glass fibre has larger limitation in specific tenacity, use temperature, chemical stability etc., can not meet the various application demands of present stage completely.Therefore, be badly in need of seeking a kind of Fresh fats to overcome the application limitation of existing various fiber in polypropylene composite material.
Aramid fiber is with natural aramid fiber ore for raw material, will add in melting furnaces after ore reduction, after 1450 ~ 1500 DEG C of meltings, is drawn into continuous fibre by spinning jet.The performance of aramid fiber is better than glass fibre, and can substitute carbon fiber in some occasion and use, cost is low, by force substituting, and China's aramid fiber mineral reserve rich reserves, therefore has vast potential for future development in addition.
Summary of the invention
The present invention is that in the aramid fiber reinforced polypropylene compound material in order to solve prior art, aramid fiber fragility is large, in use easy damaged and fracture, and with the poor compatibility of matrix, greatly can affect the machine-shaping property of polypropylene composite material and the problem of mechanical property, provide a kind of Graphene modification of aramid fiber reinforced polypropylene compound material, Graphene modification of aramid fiber reinforced polypropylene compound material scientific formulation of the present invention, by mutually working in coordination with between each component, there is excellent processing characteristics and mechanical property.
Present invention also offers a kind of preparation method of aramid fiber reinforced polypropylene compound material, this preparation method's step is simple, workable, is applicable to large-scale industrial production.
To achieve these goals, the present invention is by the following technical solutions:
A kind of Graphene modification of aramid fiber reinforced polypropylene compound material, is made up of the component of following mass percent: the aramid fiber 10 ~ 20% that Graphene is modified, toughner 10 ~ 15%, photostabilizer 3.4-4.2%, oxidation inhibitor 1.7-2.6%, dispersion agent 2 ~ 4%, acrylic resin surplus.Matrix material of the present invention is using acrylic resin as body material, key point be adopt brand-new employing Graphene modified aramid fiber as enhancement component, the modified aramid fiber surface of Graphene has one deck organic membrane, there is Graphene in organic membrane surface attachment simultaneously, organic membrane plays a protective role to fiber surface on the one hand, make its in use not easy damaged, on the other hand boundling effect is played to fibrous bundle, improve the toughness of fiber, not easy fracture, the most important thing is, organic membrane can and acrylic resin between form more chemical bond, improve the consistency between aramid fiber and body material, greatly improve the interface performance of matrix material, therefore expanding material is eliminated in the present invention, and Graphene can improve the roughness of aramid fiber surface, increase the contact area with resin, make between fiber and resin, to produce rivet effect, effectively increase the bonding force between fiber and matrix.Polypropylene composite material scientific formulation of the present invention, by mutually working in coordination with between each component, has excellent processing characteristics and mechanical property.
As preferably, described toughner is terpolymer EP rubber, and photostabilizer is Tinuvin783, and oxidation inhibitor is IRGANOXB225, and described dispersion agent is HONEYWELLACumistA-6.The membership that adds of aramid fiber makes matrix material become fragile, and toughner can improve fracture toughness property and the ductility of matrix material, is conducive to the performance improving matrix material, preferred terpolymer EP rubber; Oxidation inhibitor can be all kinds of compound antioxidant, mainly prevents the oxidation of polymkeric substance in preparation process, preferred IRGANOXB225; Photostabilizer can be all kinds of hindered amine as light stabilizer, mainly prevents the light-heat aging of acrylic resin, preferred Tinuvin783; Dispersion agent is micronization oxidized polyethlene wax, mainly the effect of antisolvent precipitation and antiblocking, preferred HONEYWELLACumistA-6.
A preparation method for Graphene modification of aramid fiber Reinforced Polypropylene material, is characterized in that, comprise the following steps:
(1) aramid fiber is placed in after infiltrate soaks 30 ~ 60min and dries through segmentation, obtain the aramid fiber that Graphene is modified.
(2) after measuring the modified aramid fiber of Graphene, toughner, photostabilizer, oxidation inhibitor dispersion agent, acrylic resin successively according to the above ratio, each component is mixed and feeds in twin screw extruder and carries out melt blending extruding pelletization, obtain Graphene modification of aramid fiber reinforced polypropylene compound material.
As preferably, in step (1), the diameter of described aramid fiber is 7 ~ 9 μm, and length is 4 ~ 6mm.
As preferably, in step (1), the mass ratio of described aramid fiber and infiltrate is 1:8 ~ 10, and infiltrate is the aqueous solution of chitosan, acetic acid, KH-550, polyoxyethylene stearic acid ester and quaternary ammonium salt, and wherein the mass percent concentration of each component is: Graphene 5 ~ 10%, chitosan 0.3 ~ 0.5%, acetic acid 1 ~ 1.5%, KH-5500.2 ~ 0.6%, polyethylene glycol adipate 5 ~ 7%, polyoxyethylene stearic acid ester 0.3 ~ 0.5%, quaternary ammonium salt 0.1 ~ 0.3%.Graphene can improve the roughness of aramid fiber surface, increase the contact area with resin, make between fiber and resin, to produce rivet effect, bonding force between effective increase fiber and matrix, Graphene can also increase shock resistance and the toughness of matrix material simultaneously, and dispersed in infiltrate of Graphene is a difficult point, this problem is efficiently solved by adding chitosan in the present invention, chitosan can make the surface of Graphene show like charges, make mutually repel between Graphene thus scatter rapidly, effectively can avoid the generation of reunion and deposited phenomenon, chitosan can also improve the interfacial bond property between matrix and fiber simultaneously, acetic acid is in order to adjust pH, KH-550 can improve the sticking power of organic membrane on fiber, polyethylene glycol adipate mainly forms resin molding structure at fiber surface, polyoxyethylene stearic acid ester lubricate, gives the smoothness of fiber, effectively reduces damage, quaternary ammonium salt plays antistatic property, each component can be made dispersed in infiltrate simultaneously.Aramid fiber is by the infiltration modification of infiltrate of the present invention, and surfaceness improves greatly, and be greatly improved with the consistency of matrix and interface performance, not easily Damage and fracture, is conducive to the mechanical property improving polypropylene composite material.
As preferably, described infiltrate obtains by the following method: after first measuring Graphene, chitosan, acetic acid, KH-550, polyethylene glycol adipate, polyoxyethylene stearic acid ester, quaternary ammonium salt and water successively by the mass percent concentration of component each in infiltrate, successively that acetic acid, chitosan is soluble in water again, add Graphene again and carry out ultrasonic disperse, finally add KH-550, polyethylene glycol adipate, polyoxyethylene stearic acid ester and quaternary ammonium salt to stir simultaneously, obtain infiltrate.For ensureing the dispersed of Graphene, the addition sequence of each component is key point, chitosan is added again after adding acetic acid adjustment pH, chitosan can be made to dissolve rapidly, add Graphene again and carry out ultrasonic disperse, to ensure that Graphene can be completely dispersed, can not reunite, other material is added again, effectively to ensure the homogeneity of infiltrate after graphene uniform dispersion.
As preferably, ultrasonic processing condition are: power 150 ~ 160W, frequency 35 ~ 40kHz, time 10 ~ 15min.The ultrasonic processing condition of strict control are for preventing steeping fluid emulsification on the basis ensureing graphene uniform dispersion simultaneously.
As preferably, in step (1), the concrete steps that segmentation is dried are: first at 95 ~ 105 DEG C, dry 3 ~ 5min, then dry at 40 ~ 50 DEG C.The organic membrane Cracking Failure effectively can avoiding fiber surface is dried in segmentation.
As preferably, in step (2), twin screw extruder five district temperature is respectively: 190 ~ 195 DEG C, 195 ~ 200 DEG C, 200 ~ 205 DEG C, 195 ~ 200 DEG C, 190 ~ 195 DEG C.
Therefore, the invention has the beneficial effects as follows:
(1) adopt Graphene modification of aramid fiber as the enhancement component of polypropylene composite material, and design be optimized to integral formula, the Graphene modification of aramid fiber reinforced polypropylene compound material machine-shaping property obtained and mechanical property good;
(2) infiltration modification is carried out to aramid fiber, the organic membrane that one deck is attached with Graphene is formed at aramid fiber surface, make aramid fiber in use not easy damaged, and boundling effect is played to fibrous bundle, greatly can improve the interface performance of matrix material simultaneously, bonding force between effective increase fiber and matrix, is conducive to the processing characteristics and the mechanical property that improve matrix material;
(3) preparation method's step is simple, workable, is applicable to large-scale industrial production.
Embodiment
Below by embodiment, the present invention will be further described.
In the present invention, if not refer in particular to, all per-cent is weight unit, and all devices and raw material all can be buied from market or the industry is conventional, and the method in following embodiment, if no special instructions, is this area ordinary method.
Embodiment 1
A kind of Graphene modification of aramid fiber reinforced polypropylene compound material, be made up of the component of following mass percent: the aramid fiber 10% that Graphene is modified, toughner 10%, photostabilizer 3.4%, oxidation inhibitor 1.7%, dispersion agent 2%, acrylic resin surplus, wherein, toughner is terpolymer EP rubber, photostabilizer is Tinuvin783, and oxidation inhibitor is IRGANOXB225, and described dispersion agent is HONEYWELLACumistA-6.
The preparation method of Graphene modification of aramid fiber reinforced polypropylene compound material, comprises the following steps:
(1) aramid fiber is placed in after infiltrate soaks 30min and dries through segmentation, obtain the aramid fiber that Graphene is modified, the concrete steps that segmentation is dried are: first at 95 DEG C, dry 5min, dry at 40 DEG C again, the mass ratio of aramid fiber and infiltrate is 1:8, the diameter of aramid fiber is 7 μm, and length is 4mm, and infiltrate is chitosan, acetic acid, KH-550, the aqueous solution of polyoxyethylene stearic acid ester and quaternary ammonium salt, wherein the mass percent concentration of each component is: Graphene 5%, chitosan 0.3 ~ %, acetic acid 1%, KH-5500.2%, polyethylene glycol adipate 5%, polyoxyethylene stearic acid ester 0.3%, quaternary ammonium salt 0.1%, infiltrate obtains by the following method: first measure Graphene successively by the mass percent concentration of component each in infiltrate, chitosan, acetic acid, KH-550, polyethylene glycol adipate, polyoxyethylene stearic acid ester, after quaternary ammonium salt and water, more successively by acetic acid, chitosan is soluble in water, then adds Graphene and carry out ultrasonic disperse, and the processing condition of ultrasonic disperse are: power 150 ~ 160W, frequency 35 ~ 40kHz, and time 15min, finally adds KH-550 simultaneously, polyethylene glycol adipate, polyoxyethylene stearic acid ester and quaternary ammonium salt stir.
(2) after measuring the modified aramid fiber of Graphene, toughner, photostabilizer, oxidation inhibitor dispersion agent, acrylic resin successively by the component proportion of Graphene modification of aramid fiber reinforced polypropylene compound material, each component is mixed and feeds in twin screw extruder and carries out melt blending extruding pelletization, obtain Graphene modification of aramid fiber reinforced polypropylene compound material, twin screw extruder five district temperature is respectively: 190 ~ 195 DEG C, 195 ~ 200 DEG C, 200 ~ 205 DEG C, 195 ~ 200 DEG C, 190 ~ 195 DEG C.
Embodiment 2
A kind of Graphene modification of aramid fiber reinforced polypropylene compound material, be made up of the component of following mass percent: the aramid fiber 15% that Graphene is modified, toughner 12%, photostabilizer 4%, oxidation inhibitor 3%, dispersion agent 3%, acrylic resin surplus, wherein, toughner is terpolymer EP rubber, photostabilizer is Tinuvin783, and oxidation inhibitor is IRGANOXB225, and described dispersion agent is HONEYWELLACumistA-6.
The preparation method of Graphene modification of aramid fiber reinforced polypropylene compound material, comprises the following steps:
(1) aramid fiber is placed in after infiltrate soaks 40min and dries through segmentation, obtain the aramid fiber that Graphene is modified, the concrete steps that segmentation is dried are: first at 100 DEG C, dry 4min, dry at 45 DEG C again, the mass ratio of aramid fiber and infiltrate is 1:9, the diameter of aramid fiber is 8 μm, and length is 5mm, and infiltrate is chitosan, acetic acid, KH-550, the aqueous solution of polyoxyethylene stearic acid ester and quaternary ammonium salt, wherein the mass percent concentration of each component is: Graphene 6%, chitosan 7%, acetic acid 1.2%, KH-5500.3%, polyethylene glycol adipate 6%, polyoxyethylene stearic acid ester 0.4%, quaternary ammonium salt 0.2%, infiltrate obtains by the following method: first measure Graphene successively by the mass percent concentration of component each in infiltrate, chitosan, acetic acid, KH-550, polyethylene glycol adipate, polyoxyethylene stearic acid ester, after quaternary ammonium salt and water, more successively by acetic acid, chitosan is soluble in water, then adds Graphene and carry out ultrasonic disperse, and the processing condition of ultrasonic disperse are: power 155W, frequency 37kHz, and time 12min, finally adds KH-550 simultaneously, polyethylene glycol adipate, polyoxyethylene stearic acid ester and quaternary ammonium salt stir.
(2) after measuring the modified aramid fiber of Graphene, toughner, photostabilizer, oxidation inhibitor dispersion agent, acrylic resin successively by the component proportion of Graphene modification of aramid fiber reinforced polypropylene compound material, each component is mixed and feeds in twin screw extruder and carries out melt blending extruding pelletization, obtain Graphene modification of aramid fiber reinforced polypropylene compound material, twin screw extruder five district temperature is respectively: 190 ~ 195 DEG C, 195 ~ 200 DEG C, 200 ~ 205 DEG C, 195 ~ 200 DEG C, 190 ~ 195 DEG C.
Embodiment 3
A kind of Graphene modification of aramid fiber reinforced polypropylene compound material, be made up of the component of following mass percent: the aramid fiber 20% that Graphene is modified, toughner 15%, photostabilizer 4.2%, oxidation inhibitor 2.6%, dispersion agent 4%, acrylic resin surplus, wherein, toughner is terpolymer EP rubber, photostabilizer is Tinuvin783, and oxidation inhibitor is IRGANOXB225, and described dispersion agent is HONEYWELLACumistA-6.
The preparation method of Graphene modification of aramid fiber reinforced polypropylene compound material, comprises the following steps:
(1) aramid fiber is placed in after infiltrate soaks 60min and dries through segmentation, obtain the aramid fiber that Graphene is modified, the concrete steps that segmentation is dried are: first at 105 DEG C, dry 3min, dry at 50 DEG C again, the mass ratio of aramid fiber and infiltrate is 1:10, the diameter of aramid fiber is 9 μm, and length is 6mm, and infiltrate is chitosan, acetic acid, KH-550, the aqueous solution of polyoxyethylene stearic acid ester and quaternary ammonium salt, wherein the mass percent concentration of each component is: Graphene 10%, chitosan 0.5%, acetic acid 1.5%, KH-5500.6%, polyethylene glycol adipate 7%, polyoxyethylene stearic acid ester 0.5%, quaternary ammonium salt 0.3%, infiltrate obtains by the following method: first measure Graphene successively by the mass percent concentration of component each in infiltrate, chitosan, acetic acid, KH-550, polyethylene glycol adipate, polyoxyethylene stearic acid ester, after quaternary ammonium salt and water, more successively by acetic acid, chitosan is soluble in water, then adds Graphene and carry out ultrasonic disperse, and the processing condition of ultrasonic disperse are: power 60W, frequency 35kHz, and time 10min, finally adds KH-550 simultaneously, polyethylene glycol adipate, polyoxyethylene stearic acid ester and quaternary ammonium salt stir.
(2) after measuring the modified aramid fiber of Graphene, toughner, photostabilizer, oxidation inhibitor dispersion agent, acrylic resin successively by the component proportion of Graphene modification of aramid fiber reinforced polypropylene compound material, each component is mixed and feeds in twin screw extruder and carries out melt blending extruding pelletization, obtain Graphene modification of aramid fiber reinforced polypropylene compound material, twin screw extruder five district temperature is respectively: 190 ~ 195 DEG C, 195 ~ 200 DEG C, 200 ~ 205 DEG C, 195 ~ 200 DEG C, 190 ~ 195 DEG C.
Above-described embodiment is one of the present invention preferably scheme, not does any pro forma restriction to the present invention, also has other variant and remodeling under the prerequisite not exceeding the technical scheme described in claim.
Claims (9)
1. a Graphene modification of aramid fiber reinforced polypropylene compound material, it is characterized in that, be made up of the component of following mass percent: the aramid fiber 10 ~ 20% that Graphene is modified, toughner 10 ~ 15%, photostabilizer 3.4-4.2%, oxidation inhibitor 1.7-2.6%, dispersion agent 2 ~ 4%, acrylic resin surplus.
2. Graphene modification of aramid fiber Reinforced Polypropylene material according to claim 1, it is characterized in that, described toughner is terpolymer EP rubber, and photostabilizer is Tinuvin783, oxidation inhibitor is IRGANOXB225, and described dispersion agent is HONEYWELLACumistA-6.
3. a preparation method for Graphene modification of aramid fiber reinforced polypropylene compound material as claimed in claim 1, is characterized in that, comprise the following steps:
(1) aramid fiber is placed in after infiltrate soaks 30 ~ 60min and dries through segmentation, obtain the aramid fiber that Graphene is modified;
(2) after measuring the modified aramid fiber of Graphene, toughner, photostabilizer, oxidation inhibitor dispersion agent, acrylic resin successively according to the above ratio, each component is mixed and feeds in twin screw extruder and carries out melt blending extruding pelletization, obtain Graphene modification of aramid fiber reinforced polypropylene compound material.
4. the preparation method of a kind of Graphene modification of aramid fiber reinforced polypropylene compound material according to claim 3, is characterized in that, in step (1), the diameter of described aramid fiber is 7 ~ 9 μm, and length is 4 ~ 6mm.
5. the preparation method of a kind of Graphene modification of aramid fiber reinforced polypropylene compound material according to claim 4, it is characterized in that, in step (1), the mass ratio of described aramid fiber and infiltrate is 1:8 ~ 10, infiltrate is chitosan, acetic acid, KH-550, the aqueous solution of polyoxyethylene stearic acid ester and quaternary ammonium salt, wherein the mass percent concentration of each component is: Graphene 5 ~ 10%, chitosan 0.3 ~ 0.5%, acetic acid 1 ~ 1.5%, KH-5500.2 ~ 0.6%, polyethylene glycol adipate 5 ~ 7%, polyoxyethylene stearic acid ester 0.3 ~ 0.5%, quaternary ammonium salt 0.1 ~ 0.3%.
6. the preparation method of a kind of Graphene modification of aramid fiber reinforced polypropylene compound material according to claim 5, it is characterized in that, described infiltrate obtains by the following method: first measure Graphene successively by the mass percent concentration of component each in infiltrate, chitosan, acetic acid, KH-550, polyethylene glycol adipate, polyoxyethylene stearic acid ester, after quaternary ammonium salt and water, again successively by acetic acid, chitosan is soluble in water, add Graphene again and carry out ultrasonic disperse, finally add KH-550 simultaneously, polyethylene glycol adipate, polyoxyethylene stearic acid ester and quaternary ammonium salt stir, obtain infiltrate.
7. the preparation method of a kind of Graphene modification of aramid fiber reinforced polypropylene compound material according to claim 6, it is characterized in that, ultrasonic processing condition are: power 150 ~ 160W, frequency 35 ~ 40kHz, time 10 ~ 15min.
8. the preparation method of a kind of Graphene modification of aramid fiber reinforced polypropylene compound material according to claim 3, is characterized in that, in step (1), the concrete steps that segmentation is dried are: first at 95 ~ 105 DEG C, dry 3 ~ 5min, then dry at 40 ~ 50 DEG C.
9. the preparation method of a kind of Graphene modification of aramid fiber reinforced polypropylene compound material according to claim 3, is characterized in that, in step (2), twin screw extruder five district temperature is respectively: 190 ~ 195 DEG C, 195 ~ 200 DEG C, 200 ~ 205 DEG C, 195 ~ 200 DEG C, 190 ~ 195 DEG C.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106279945A (en) * | 2016-08-12 | 2017-01-04 | 湖北汽车工业学院 | A kind of graphene oxide/Fanglun slurry cake/EVOH composite and preparation method thereof |
| CN107881761A (en) * | 2017-11-23 | 2018-04-06 | 贵州大学 | The method for preparing modification of aramid fiber/graphene reinforcement |
| CN108610559A (en) * | 2018-04-13 | 2018-10-02 | 武汉金发科技有限公司 | A kind of graphene modified polypropylene composite material and preparation method thereof |
| CN108976608A (en) * | 2018-08-10 | 2018-12-11 | 福建工程学院 | Modified tossa/PP composite material of a kind of graphene and preparation method thereof |
| CN109403020A (en) * | 2018-10-30 | 2019-03-01 | 山东安恒华盛石墨烯材料科技有限公司 | A kind of compound para-aramid fiber of resistance to ultraviolet graphene and preparation method and application |
| CN111962212A (en) * | 2020-08-13 | 2020-11-20 | 蒋俊 | High-toughness medical non-woven fabric and preparation method thereof |
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| CN113234288A (en) * | 2021-05-11 | 2021-08-10 | 绍兴市上虞舜东橡塑制品有限公司 | High-heat-resistance ethylene propylene rubber tube based on multi-dimensional nano-structure material modification and preparation method thereof |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106279945A (en) * | 2016-08-12 | 2017-01-04 | 湖北汽车工业学院 | A kind of graphene oxide/Fanglun slurry cake/EVOH composite and preparation method thereof |
| CN106279945B (en) * | 2016-08-12 | 2019-05-21 | 台州学院 | A kind of graphene oxide/Fanglun slurry cake/EVOH composite material and preparation method |
| CN107881761A (en) * | 2017-11-23 | 2018-04-06 | 贵州大学 | The method for preparing modification of aramid fiber/graphene reinforcement |
| CN108610559A (en) * | 2018-04-13 | 2018-10-02 | 武汉金发科技有限公司 | A kind of graphene modified polypropylene composite material and preparation method thereof |
| CN108976608A (en) * | 2018-08-10 | 2018-12-11 | 福建工程学院 | Modified tossa/PP composite material of a kind of graphene and preparation method thereof |
| CN109403020A (en) * | 2018-10-30 | 2019-03-01 | 山东安恒华盛石墨烯材料科技有限公司 | A kind of compound para-aramid fiber of resistance to ultraviolet graphene and preparation method and application |
| CN111962212A (en) * | 2020-08-13 | 2020-11-20 | 蒋俊 | High-toughness medical non-woven fabric and preparation method thereof |
| CN111962212B (en) * | 2020-08-13 | 2021-05-04 | 联丰医用卫生材料(始兴)有限公司 | High-toughness medical non-woven fabric and preparation method thereof |
| CN112341704A (en) * | 2020-10-26 | 2021-02-09 | 嘉兴学院 | Ti3C2Aramid short fiber reinforced polypropylene composite material and preparation method thereof |
| CN112341704B (en) * | 2020-10-26 | 2022-06-21 | 嘉兴学院 | Ti3C2Aramid short fiber reinforced polypropylene composite material and preparation method thereof |
| CN113121919A (en) * | 2021-03-30 | 2021-07-16 | 盘锦海兴科技股份有限公司 | Aramid fiber reinforced polypropylene master batch and preparation method thereof |
| CN113121919B (en) * | 2021-03-30 | 2023-12-19 | 盘锦海兴科技股份有限公司 | Aramid fiber reinforced polypropylene master batch and preparation method thereof |
| CN113234288A (en) * | 2021-05-11 | 2021-08-10 | 绍兴市上虞舜东橡塑制品有限公司 | High-heat-resistance ethylene propylene rubber tube based on multi-dimensional nano-structure material modification and preparation method thereof |
| CN113234288B (en) * | 2021-05-11 | 2022-07-08 | 绍兴市上虞舜东橡塑制品有限公司 | High-heat-resistance ethylene propylene rubber tube based on multi-dimensional nano-structure material modification and preparation method thereof |
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