CN114292490A - Continuous fiber reinforced thermoplastic composite material and preparation method and application thereof - Google Patents
Continuous fiber reinforced thermoplastic composite material and preparation method and application thereof Download PDFInfo
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- 239000002131 composite material Substances 0.000 title claims abstract description 68
- 239000011199 continuous fiber reinforced thermoplastic Substances 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title abstract description 43
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 82
- 239000004917 carbon fiber Substances 0.000 claims abstract description 82
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000004696 Poly ether ether ketone Substances 0.000 claims abstract description 26
- 229920002530 polyetherether ketone Polymers 0.000 claims abstract description 26
- 229920002492 poly(sulfone) Polymers 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 11
- 239000006057 Non-nutritive feed additive Substances 0.000 claims abstract description 10
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 10
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 58
- 239000000377 silicon dioxide Substances 0.000 claims description 30
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims description 20
- 239000005543 nano-size silicon particle Substances 0.000 claims description 13
- 238000007254 oxidation reaction Methods 0.000 claims description 12
- 239000000835 fiber Substances 0.000 claims description 11
- 230000003647 oxidation Effects 0.000 claims description 11
- 235000012239 silicon dioxide Nutrition 0.000 claims description 10
- 229910001961 silver nitrate Inorganic materials 0.000 claims description 10
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 9
- 238000007731 hot pressing Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 238000002791 soaking Methods 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 6
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000001590 oxidative effect Effects 0.000 claims description 4
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 4
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- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 1
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical group CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 description 1
- 239000004697 Polyetherimide Substances 0.000 description 1
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- Reinforced Plastic Materials (AREA)
Abstract
The application relates to the field of thermoplastic resin composite materials, and particularly discloses a continuous fiber reinforced thermoplastic composite material and a preparation method and application thereof. The continuous fiber reinforced thermoplastic composite material comprises the following raw materials in parts by weight: 100 portions of polyetheretherketone-containing material 180 portions, 250 portions of continuous carbon fiber-containing material 150 portions, 15 to 30 portions of polysulfone, 0.5 to 1.5 portions of antioxidant and 1.5 to 3 portions of processing aid; the preparation method comprises the following steps: s1, preparing a unidirectional prepreg tape; s2, placing the master slice; and S3, hot-press forming. The continuous fiber reinforced thermoplastic composite material can be used for paddle blades, and has excellent impact performance and tensile performance.
Description
Technical Field
The application relates to the field of thermoplastic resin composite materials, in particular to a continuous fiber reinforced thermoplastic composite material and a preparation method thereof.
Background
Along with the improvement of living standard, more and more sports walk into people's life, the motion of rowing boat belongs to the sport on water, relies on manpower rowing boat to make the motion that the boat gos forward on the surface of water, and the paddle is the indispensable instrument in the motion of rowing boat, and the paddle is the key part of paddle.
At present, the materials of the paddle blades commonly seen in the market comprise aluminum alloy materials, plastic materials, thermosetting composite materials, thermoplastic composite materials and the like. The aluminum alloy blade has poor fatigue resistance and large thermal deformation; the mechanical property of the plastic blade is poor; the thermosetting composite material has brittle performance and low impact strength and is difficult to recycle; the thermoplastic composite material has relatively excellent comprehensive performance.
The continuous fiber reinforced thermoplastic composite material is a novel thermoplastic composite material which is formed by taking thermoplastic resin as a matrix, taking continuous fibers and fabrics thereof as reinforcing materials and carrying out resin melting impregnation, extrusion and other processes.
In view of the above-mentioned related art, the applicant found that the impact resistance of the paddle blade made of the continuous fiber reinforced thermoplastic composite material can be further improved to prolong the service life of the paddle blade.
Disclosure of Invention
In order to improve the impact property of the continuous fiber reinforced thermoplastic composite material and prolong the service life of a paddle blade, the application provides the continuous fiber reinforced thermoplastic composite material and the preparation method thereof.
In a first aspect, the present application provides a continuous fiber reinforced thermoplastic composite material, which adopts the following technical scheme: a continuous fiber reinforced thermoplastic composite material comprises the following raw materials in parts by weight: 100-180 parts of polyetheretherketone, 250 parts of continuous carbon fiber, 5-15 parts of polysulfone, 0.5-1.5 parts of antioxidant and 1.5-3 parts of processing aid.
By adopting the technical scheme, the polyetheretherketone is a crystalline polymer and has excellent impact resistance and damage resistance; the continuous carbon fiber has high strength and rigidity and good dimensional stability, and the continuous fiber reinforced thermoplastic composite material prepared by using the polyether-ether-ketone as the matrix and the continuous carbon fiber as the reinforcing material has high strength and excellent impact resistance. However, the continuous carbon fibers can be dispersed unevenly in the polyetheretherketone, so that the performance of the composite material is affected, polysulfone is also a thermoplastic polymer, and a certain amount of polysulfone is added into the polyetheretherketone, so that on one hand, the polysulfone can also be used as a base material, on the other hand, the polysulfone can improve the uniformity of the dispersion of the continuous carbon fibers in the polyetheretherketone, the impact performance and the tensile performance of the composite material are further improved, and the maximum impact force can reach 2789-3684N.
Preferably, the feed comprises the following raw materials in parts by weight: 150 parts of polyetheretherketone-containing material, 220 parts of continuous carbon fiber-containing material, 8-12 parts of polysulfone, 0.8-1.2 parts of antioxidant and 2-2.8 parts of processing aid.
By adopting the technical scheme, the proportion of the raw materials in the composite material is further optimized, and the comprehensive performance of the composite material is improved.
Preferably, the continuous carbon fiber is modified by nano silica, and the modification method comprises the following steps: soaking continuous carbon fibers in acetone suspension of nano-silica, performing sizing treatment at 80-85 ℃, and then drying at 95-100 ℃ to obtain nano-silica modified continuous carbon fibers; the weight ratio of the nano silicon dioxide to the continuous carbon fiber is 1: (1.5-2.5).
By adopting the technical scheme, the continuous carbon fibers are modified by the nano-silica, and the nano-silica is wrapped on the surfaces of the continuous carbon fibers, so that on one hand, the roughness of the surfaces of the continuous carbon fibers is improved, and the contact area between the nano-carbon fibers and the polyether-ether-ketone is improved, on the other hand, the active groups are introduced into the surfaces of the inert continuous carbon fibers, and are connected with the polyether-ether-ketone through chemical bonds, so that the connectivity between the continuous carbon fibers and the polyether-ether-ketone is enhanced, and the interface effect between the continuous carbon fibers and the polyether-ether-ketone is improved, thereby improving the impact property and the tensile property of the composite material.
Preferably, the continuous carbon fiber is subjected to an oxidation treatment.
By adopting the technical scheme, before the continuous carbon fibers are modified by the nano-silica, the continuous carbon fibers are subjected to oxidation treatment, the surface active groups of the continuous carbon fibers are increased, the reactive functional groups are formed on the surfaces of the continuous carbon fibers, and then the continuous carbon fibers are treated by the nano-silica, so that the connectivity between the nano-silica and the continuous carbon fibers is improved.
Preferably, the continuous carbon fiber is subjected to oxidation treatment by:
1) ultrasonically dissolving silver nitrate in water to obtain a silver nitrate solution;
2) adding potassium persulfate into a silver nitrate solution, and stirring until the solution is black to obtain an oxidation solution;
3) soaking continuous carbon fiber in oxidizing liquid, and heating at 65-75 deg.C until the solution is transparent;
4) the continuous carbon fibers are taken out, washed and then dried.
By adopting the technical scheme, potassium persulfate is used as an oxidant, silver nitrate is used as a catalyst to carry out oxidation treatment on the continuous carbon fiber, and active groups on the surface of the continuous carbon fiber are increased and are not oxidized; the strength of the body of the continuous carbon fiber is damaged, and the strength of the continuous carbon fiber is ensured, so that the impact performance of the composite material is ensured.
The reaction temperature in the step 3) can be any temperature between 65 ℃ and 75 ℃, such as 65 ℃, 70 ℃, 75 ℃ and the like.
Preferably, the nanosilica is modified by a silane coupling agent.
By adopting the technical scheme, the nano-level silicon dioxide has large specific surface area and is easy to agglomerate, the silane coupling agent is used for treating the nano-silicon dioxide, a lubricating film is formed on the surface of the nano-silicon dioxide, the agglomeration probability of the nano-silicon dioxide is reduced, the dispersion uniformity of the nano-silicon dioxide on continuous carbon fibers is improved, the interface performance between the continuous carbon fibers and polyether ether ketone is further enhanced, and the impact performance and the tensile performance of the composite material are improved.
Preferably, the particle size of the nano silicon dioxide is 40-60 nm.
By adopting the technical scheme, the nano-silica in the secondary particle size range can well wrap the continuous carbon fibers, so that the interface performance between the continuous carbon fibers and the polyether-ether-ketone is improved, the improvement effect on the interface performance cannot be reduced due to overlarge particle size of the silica, and the waste and agglomeration of the nano-silica due to too small particle size cannot be caused.
In a second aspect, the present application provides a method for preparing a continuous fiber reinforced thermoplastic composite material, which adopts the following technical scheme:
a method of preparing a continuous fiber reinforced thermoplastic composite comprising the steps of:
s1, preparing a unidirectional prepreg tape: melting and blending polyether-ether-ketone, polysulfone, an antioxidant and a processing aid to obtain a thermoplastic resin film; impregnating, cooling and rolling continuous carbon fibers and a thermoplastic resin film to obtain a unidirectional prepreg tape;
s2, mother piece placement: cutting the unidirectional prepreg tape into a plurality of master pieces with the same shape and size along the direction of continuous fibers, and recording as 0-degree master pieces; cutting the unidirectional prepreg tape into a plurality of mother sheets with the same shape and size along the direction vertical to the continuous fibers, and recording the mother sheets as 90-degree mother sheets; alternately and orthogonally stacking the 0-degree master slice group and the 90-degree master slice group;
s3, hot-press forming: carrying out hot press molding on the placed master slice to obtain a continuous fiber reinforced thermoplastic composite material; the hot-pressing temperature is 250 ℃ and 320 ℃, the pressure is 2-5MPa, and the time is 5-10 min.
By adopting the technical scheme, the hot pressing process is adopted for one-step forming, the process is simple and easy to operate, the forming time is short, the product size is accurate and controllable, the manufacturing cost is low, and the method is suitable for mass production.
Wherein, the hot-pressing temperature in the hot-pressing process can be any temperature of 250-320 ℃, the pressure can be any pressure between 2-5MPa, and the time can be any time between 5-10min, such as hot-pressing for 10min at 250 ℃ and 5 MPa; hot pressing at 300 deg.C and 3Mpa for 8 min; hot pressing at 320 deg.C and 2MPa for 5 min.
In a third aspect, the present application provides a use of any one of the continuous fiber reinforced thermoplastic composites described above in the manufacture of a propeller blade.
In summary, the present application has the following beneficial effects:
1. according to the preparation method, the composite material is prepared by mutually cooperating the polyether-ether-ketone, the continuous carbon fiber and the polysulfone, so that the maximum impact force of the prepared composite material can reach 2789-2875N, the tensile strength can reach 40.25-40.35Mpa, the elongation at break can reach 0.43-0.48%, and the prepared composite material has excellent impact property and tensile property.
2. In the application, the nano silicon dioxide is preferably adopted to modify the continuous carbon fiber, the maximum impact force of the prepared composite material can reach 3395-3684N, the tensile strength can reach 40.61-42.37MPa, the elongation at break can reach 0.53-0.85%, and the impact property and the tensile property of the composite material are further improved.
Detailed Description
The present application will be described in further detail with reference to examples.
Preparation examples of starting materials and intermediates
Raw materials
The raw materials of the embodiment of the application can be obtained by market;
the polysulfone is P-3500;
the polyether-ether-ketone model is LCL-4033 EM;
the antioxidant is antioxidant 168;
the processing aid is silicone powder;
the silane coupling agent is KH-550.
Preparation example
Preparation example 1
A silane coupling agent modified nano silicon dioxide is prepared by the following steps:
and soaking the nano-silica in a silane coupling agent solution, stirring for 3h at 90 ℃, and then filtering, washing and vacuum drying for 12h to obtain the silane coupling agent modified nano-silica.
Preparation example 2
An oxidized continuous carbon fiber, the preparation method comprises:
1) ultrasonically dissolving 1kg of silver nitrate in water to obtain a silver nitrate solution;
2) adding 16kg of potassium persulfate into a silver nitrate solution, and ultrasonically stirring until the solution is black to obtain an oxidation solution;
3) soaking continuous carbon fiber in oxidizing liquid, and heating at 70 deg.C until the solution is transparent;
4) the continuous carbon fiber was taken out, washed and vacuum dried at 70 ℃ for 8 h.
Preparation example 3
An oxidized continuous carbon fiber, the preparation method comprises:
soaking continuous carbon fiber in HNO with the concentration of 13mol/L3The solution was taken out after 2h and dried under vacuum at 70 ℃ for 8 h.
Preparation example 4
An oxidized continuous carbon fiber, the preparation method comprises:
continuous carbon fiber is used as an anode, graphite is used as a cathode, ammonium bicarbonate is used as electrolyte, and the surface treatment is carried out on the carbon fiber through the chemical oxidation reaction of the anode.
Preparation example 5
A nano silicon dioxide modified continuous carbon fiber is prepared by the following steps:
ultrasonically dispersing 10kg of nano-silica with the particle size of 40-60nm in acetone to obtain nano-silica suspension, soaking 15kg of continuous carbon fiber in the nano-silica suspension, reacting at 80 ℃ for 30min, taking out the continuous carbon fiber, and drying at 100 ℃ to obtain the nano-silica modified continuous carbon fiber.
Preparation example 6
Unlike preparation example 5, the amount of the continuous carbon fiber used in preparation example 6 was 20 kg.
Preparation example 7
Unlike preparation example 5, the amount of the continuous carbon fiber used in preparation example 7 was 25 kg.
Preparation example 8
Unlike preparation example 5, the amount of the continuous carbon fiber used in preparation example 8 was 10 kg.
Preparation example 9
Unlike preparation example 5, the amount of the continuous carbon fiber used in preparation example 9 was 30 kg.
Preparation examples 10 to 12
Unlike preparation example 7, the continuous carbon fibers in preparation examples 10 to 12 were obtained from preparation examples 2 to 4, respectively.
Preparation example 13
In contrast to preparation example 10, the nanosilica in preparation example 13 was from preparation example 1.
Preparation example 14
Unlike preparation example 13, the nano-silica in preparation example 14 had a particle size of 20 to 30 nm.
Preparation example 15
Unlike preparation example 13, the nano-silica in preparation example 15 had a particle size of 80 to 100 nm.
Examples
Examples 1 to 5
A continuous fiber reinforced thermoplastic composite material is prepared by the following steps:
s1, preparing a unidirectional prepreg tape: according to the raw material proportion in the following table 1, polyether-ether-ketone, polysulfone, an antioxidant and a processing aid are melted, blended and extruded at 380 ℃ to obtain a thermoplastic resin film; impregnating, cooling and rolling continuous carbon fibers and a thermoplastic resin film to obtain a unidirectional prepreg tape;
s2, mother piece placement: cutting the unidirectional prepreg tape into a plurality of master pieces with the same shape and size along the direction of continuous fibers, and recording as 0-degree master pieces; cutting the unidirectional prepreg tape into a plurality of mother sheets with the same shape and size along the direction vertical to the continuous fibers, and recording the mother sheets as 90-degree mother sheets; alternately and orthogonally stacking the 0-degree master slice group and the 90-degree master slice group;
s3, hot-press forming: carrying out hot press molding on the placed master slice to obtain a continuous fiber reinforced thermoplastic composite material; the hot pressing temperature is 300 ℃, the pressure is 3MPa, and the time is 8 min.
TABLE 1 EXAMPLES 1-5 raw materials proportioning Table (kg)
| Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | |
| Polyether ether ketone | 100 | 120 | 135 | 150 | 180 |
| Continuous carbon fiber | 250 | 220 | 200 | 180 | 150 |
| Polysulfone | 5 | 8 | 10 | 12 | 15 |
| Antioxidant agent | 1.5 | 1.2 | 1.0 | 0.8 | 0.5 |
| Processing aid | 1.5 | 2.0 | 2.5 | 2.8 | 3.0 |
Examples 6 to 16
Unlike example 3, the continuous carbon fibers of examples 6-16 were from preparative examples 5-15, respectively.
Comparative example
Comparative example 1
In contrast to example 1, in comparative example 1 an equivalent amount of polyethylene was used instead of polyetheretherketone.
Comparative example 2
In contrast to example 1, comparative example 2 replaces the polyetheretherketone with an equal amount of polyetherimide.
Comparative example 3
Unlike example 1, the carbon fiber was replaced with an equal amount of aramid fiber in comparative example 3.
Comparative example 4
Unlike example 1, comparative example 4 contained no polysulfone.
Performance test
Detection method/test method
And (3) impact performance detection: the composite materials of examples 1 to 16 and comparative examples 1 to 4 were tested according to ASTM D7136, test method for evaluating resistance to damage of composite laminates, using a 16mm diameter spherical punch and 20J impact energy.
And (3) transverse tensile property detection: the composites of examples 1-16 and comparative examples 1-4 were tested according to ASTM D3039 for tensile Properties of Polymer-based composites with a loading rate of 2 mm/min.
The results of the performance measurements are shown in Table 2.
TABLE 2 Performance test results
By combining examples 1-16 with comparative examples 1-4 and Table 2, it can be seen that the maximum impact force of the composites of examples 1-16 is significantly higher than that of comparative examples 1-4, and the tensile strength and elongation at break of the composites of examples 1-16 are also better than those of comparative examples 1-4, which indicates that the tensile and impact properties of the composites prepared by the method are better.
Combining example 1 with comparative examples 1-4, and combining table 2, it can be seen that the impact and tensile properties of the composite materials in comparative examples 1-4 are significantly reduced compared to example 1 when different thermoplastic resins are used in comparative examples 1-2, different fibers are used in comparative example 3, and polysulfone is not added in comparative example 4, probably because polysulfone improves the dispersion effect of continuous carbon fibers in polyetheretherketone, and polyetheretherketone and continuous carbon fibers cooperate with each other to improve the overall properties of the composite materials.
It can be seen by combining examples 1-16 and table 1 that the impact performance and tensile performance of the composite materials in examples 6-16 are better than those of examples 1-5, which may be that the continuous carbon fibers are modified by using nano silica, the nano silica is wrapped outside the continuous carbon fibers to improve the roughness of the surfaces of the nano carbon fibers, and active groups are formed on the surfaces of the continuous carbon fibers to improve the interface performance of fibers/resins in the composite materials, thereby improving the comprehensive performance of the composite materials.
As can be seen by combining examples 6-10 with Table 1, the impact and tensile properties of the composites of examples 6-8 are superior to those of examples 9-10, which indicates that the impact and tensile properties of the composites made from nano silica and continuous carbon fiber in the ratio range defined in the present application are superior, and the impact and tensile properties of the composites are weakened when the ratio is too large or too small.
Combining example 7 with examples 11-13 and combining table 1, it can be seen that the impact performance and tensile performance of the composite material in examples 11-13 are better than those of example 7, which indicates that the impact performance and tensile performance of the composite material can be improved by performing the oxidation treatment on the continuous carbon fiber before modifying the continuous carbon fiber with the nano-silica, probably because the oxidation treatment can increase the active groups on the surface of the continuous carbon fiber and improve the fiber/resin interface performance in the composite material, thereby improving the comprehensive performance of the composite material.
Combining example 11 with examples 14-16 and table 1, it can be seen that the impact and tensile properties of the composites of examples 14-16 are superior to those of example 11, which indicates that the silane coupling agent treatment of the nano-silica can improve the impact and tensile properties of the composites, probably because the silane coupling agent treatment of the nano-silica can reduce the agglomeration of the nano-silica and improve the dispersion of the nano-silica on the continuous carbon fibers, thereby improving the fiber/resin interface properties of the composites.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (9)
1. The continuous fiber reinforced thermoplastic composite material is characterized by comprising the following raw materials in parts by weight: 180 portions of polyetheretherketone, 250 portions of continuous carbon fiber, 15 to 30 portions of polysulfone, 0.5 to 1.5 portions of antioxidant and 1.5 to 3 portions of processing aid.
2. The continuous fiber reinforced thermoplastic composite of claim 1, wherein: the feed comprises the following raw materials in parts by weight: 150 parts of polyetheretherketone-containing material, 220 parts of continuous carbon fiber-containing material, 20-25 parts of polysulfone, 0.8-1.2 parts of antioxidant and 2-2.8 parts of processing aid.
3. The continuous fiber reinforced thermoplastic composite of claim 1, wherein: the continuous carbon fiber is modified by nano silicon dioxide, and the modification method comprises the following steps:
soaking continuous carbon fibers in acetone suspension of nano-silica, performing sizing treatment at 80-85 ℃, and then drying at 95-100 ℃ to obtain nano-silica modified continuous carbon fibers; the weight ratio of the nano silicon dioxide to the continuous carbon fiber is 1: (1.5-2.5).
4. A continuous fiber reinforced thermoplastic composite as claimed in claim 3, wherein: the continuous carbon fiber is subjected to oxidation treatment.
5. The continuous fiber reinforced thermoplastic composite of claim 4, wherein: the oxidation treatment method of the continuous carbon fiber comprises the following steps:
1) ultrasonically dissolving silver nitrate in water to obtain a silver nitrate solution;
2) adding potassium persulfate into a silver nitrate solution, and stirring until the solution is black to obtain an oxidation solution;
3) soaking continuous carbon fiber in oxidizing liquid, and heating at 65-75 deg.C until the solution is transparent;
4) the continuous carbon fibers are taken out, washed and then dried.
6. A continuous fiber reinforced thermoplastic composite as claimed in claim 3, wherein: the nano silicon dioxide is modified by a silane coupling agent.
7. A continuous fiber reinforced thermoplastic composite as claimed in claim 3, wherein: the particle size of the nano silicon dioxide is 40-60 nm.
8. A method of making a continuous fiber reinforced thermoplastic composite as claimed in any one of claims 1 to 7, comprising the steps of:
s1, preparing a unidirectional prepreg tape: melting and blending polyether-ether-ketone, polysulfone, an antioxidant and a processing aid to obtain a thermoplastic resin film; impregnating, cooling and rolling continuous carbon fibers and a thermoplastic resin film to obtain a unidirectional prepreg tape;
s2, mother piece placement: cutting the unidirectional prepreg tape into a plurality of master pieces with the same shape and size along the direction of continuous fibers, and recording as 0-degree master pieces; cutting the unidirectional prepreg tape into a plurality of mother sheets with the same shape and size along the direction vertical to the continuous fibers, and recording the mother sheets as 90-degree mother sheets; alternately and orthogonally stacking the 0-degree master slice group and the 90-degree master slice group;
s3, hot-press forming: carrying out hot press molding on the placed master slice to obtain a continuous fiber reinforced thermoplastic composite material; the hot-pressing temperature is 250 ℃ and 320 ℃, the pressure is 2-5MPa, and the time is 5-10 min.
9. Use of the continuous fiber reinforced thermoplastic composite of any of claims 1-7 in the manufacture of a paddle blade.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210014081.5A CN114292490B (en) | 2022-01-06 | 2022-01-06 | Continuous fiber reinforced thermoplastic composite material and preparation method and application thereof |
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