CN109486018A - A kind of regeneration chopped carbon fiber-PP composite material and preparation method thereof - Google Patents
A kind of regeneration chopped carbon fiber-PP composite material and preparation method thereof Download PDFInfo
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- CN109486018A CN109486018A CN201811539159.5A CN201811539159A CN109486018A CN 109486018 A CN109486018 A CN 109486018A CN 201811539159 A CN201811539159 A CN 201811539159A CN 109486018 A CN109486018 A CN 109486018A
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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Abstract
The invention discloses a kind of regeneration chopped carbon fiber-PP composite materials and preparation method thereof, it is related to field of composite material preparation, a kind of regeneration chopped carbon fiber-PP composite material, it include: the regeneration chopped carbon fiber that mass fraction is 1%-5%, mass fraction is the maleic anhydride inoculated polypropylene of 1%-20%, mass fraction is the surfactant of 0.5%-2.5%, and surplus is polypropylene；Regeneration chopped carbon fiber-PP composite material preparation method includes the regeneration chopped carbon fiber that preparation is evenly distributed and preparation regeneration 2 steps of chopped carbon fiber-PP composite material.The composite material of invention can overcome the mechanical strength of polypropylene plastics insufficient, the mechanical performance of modified gained composite material is significantly reinforced, it is obviously improved stretching and bending property, there is certain reinforcing effect to impact property, direction has been expanded for the application field of recycling carbon fibre, there is wide prospects for commercial application.
Description
Technical field
The present invention relates to field of composite material preparation more particularly to a kind of regeneration chopped carbon fiber-PP composite materials
And preparation method thereof.
Background technique
Carbon fiber obtains the material of high speed development as one kind in recent years, uses the machinery for the composite material that carbon fiber obtains
Performance can comprehensively be enhanced, and carbon fiber is also widely used in more and more fields.With carbon fiber
The increasingly rising of product yield, the processing and utilization of waste and old carbon fiber become a new problem.And polypropylene plastics due to
The advantages that its relatively low price, easy processing, chemical resistance, is widely used in packaging, weaving, automobile even aircraft manufacturing
Industry.But it due to the mechanical performance of polypropylene deficiency itself, needs to be applied to by modification containing high added value
Industry in.Common filler includes talcum powder, mica powder, aluminium hydroxide, calcium carbonate, glass fibre etc..Pass through regeneration
Chopped carbon fiber and polyacrylic blending and modifying, can effectively enhance the stretching and bending property of composite material, to expand material
The application field of material.
With carbon fiber product industrial expansion, future will have more waste and old carbon fibers and need to handle, if using
The mode of simple garbage loading embeading is handled, and is the significant wastage to resource, the excellent performance of the items of pure carbon fiber, such as specific gravity
Small, heat resistance is fabulous, and thermal expansion coefficient is small, and thermal coefficient is big, corrosion-resistant, specific strength and specific modulus height etc., has obtained largely grinding
The concern for the person of studying carefully.By carbon fiber reinforce composite material is commonplace.However regenerate processing and the place of chopped carbon fiber
Reason scheme, there is not yet relevant report.
Therefore, those skilled in the art be dedicated to developing a kind of regeneration chopped carbon fiber-PP composite material and its
Preparation method provides theory and technology support for the further development of regeneration chopped carbon fiber.
Summary of the invention
In view of the above drawbacks of the prior art, the carbon that is chopped is regenerated technical problem to be solved by the invention is to provide a kind of
Fibers-polypropylene composite material and preparation method provides theory and technology branch for the further development of regeneration chopped carbon fiber
It holds.
To achieve the above object, the present invention provides a kind of regeneration chopped carbon fiber-PP composite materials, comprising:
Mass fraction is the regeneration chopped carbon fiber of 1%-5%, and the maleic anhydride grafting that mass fraction is 1%-20% is poly-
Propylene, mass fraction are the surfactant of 0.5%-2.5%, and surplus is polypropylene.
Further, described the present invention provides a kind of regeneration chopped carbon fiber-PP composite material preparation method
Method includes:
S100, equally distributed regeneration chopped carbon fiber is prepared:
S101, recycling carbon fibre is prescinded；
S102, surfactant, regeneration chopped carbon fiber are blended with distilled water；
S103, the mixture after blending is carried out to ultrasonic disperse acquisition suspension；
S104, Kapton is layered on flat bottom glass disk, suspension is poured into glass plate, drying is uniformly divided
The regeneration chopped carbon fiber of cloth；
S200, preparation regeneration chopped carbon fiber-PP composite material:
S201, ready regeneration chopped carbon fiber and maleic anhydride inoculated polypropylene, polypropylene are pressed into plastic sheet；
S202, plastic sheet is crushed to obtain regeneration chopped carbon fiber plastic grain by pulverizer；
S203, obtained regeneration chopped carbon fiber plastic grain is evenly distributed by extruder mixing, extrusion
Regenerate chopped carbon fiber-PP composite material particle；
S204, the plastic grain for obtaining extruder are added in injection molding machine, injection molding, obtain regenerating chopped carbon fiber
Dimension-PP composite material.
Compared with prior art, the present invention it is possessed it is a technical advantage that:
(1) composite material of the invention can overcome the mechanical strength of polypropylene plastics insufficient, modified gained composite material
Mechanical performance significantly reinforced, be obviously improved stretching and bending property, have certain reinforcing effect to impact property.
(2) material Platform for Automobile Components application of the present invention, wherein regeneration chopped carbon fiber and maleic anhydride grafting poly- third
Alkene cooperates the mechanical performance for significantly increasing composite material, has also expanded direction for the application field of recycling carbon fibre, has wide
Prospects for commercial application.
It is described further below with reference to technical effect of the attached drawing to design of the invention, specific structure and generation, with
It is fully understood from the purpose of the present invention, feature and effect.
Detailed description of the invention
Fig. 1 is regeneration chopped carbon fiber-PP composite material scanning of preferred embodiment preparation of the invention
Electronic Speculum sectional view.
Specific embodiment
Multiple preferred embodiments of the invention are introduced below with reference to Figure of description, keep its technology contents more clear and just
In understanding.The present invention can be emerged from by many various forms of embodiments, and protection scope of the present invention not only limits
The embodiment that Yu Wenzhong is mentioned.
A kind of regeneration chopped carbon fiber-PP composite material provided by the present invention includes that mass fraction is 1%-5%
Regeneration chopped carbon fiber, mass fraction be 1%-20% maleic anhydride inoculated polypropylene, mass fraction 0.5%-2.5%
Surfactant, surplus is polypropylene.
A kind of a kind of regeneration chopped carbon fiber-of regeneration chopped carbon fiber-PP composite material provided by the present invention is poly-
The preparation method of acrylic composite, comprising:
S100, it prepares equally distributed regeneration chopped carbon fiber and is specifically divided into following steps:
S101, recycling carbon fibre is prescinded；
S102, surfactant, regeneration chopped carbon fiber are blended with distilled water,
Wherein, surfactant is the oily ethereal solution of polyoxyethylene 20, between surfactant and regeneration chopped carbon fiber
Volume ratio is 200-1000: 1；
S103, the mixture after blending is carried out to ultrasonic disperse acquisition suspension,
Wherein, the time of ultrasonic disperse is 10-30mins, and dispersion temperature is 30-40 DEG C, and the surface contained in suspension is living
Property agent and regeneration chopped carbon fiber mass ratio be 1: 2, concentration of the dispersing agent in suspension be 0.5g/L-2.5g/L；
S104, Kapton is layered on flat bottom glass disk, suspension is poured into glass plate, drying is uniformly divided
The regeneration chopped carbon fiber of cloth；
S200, preparation regeneration chopped carbon fiber-PP composite material are specifically divided into following steps:
S201, ready regeneration chopped carbon fiber and maleic anhydride inoculated polypropylene, polypropylene are pressed into plastic sheet,
Wherein, the temperature setting in tableting processes in vulcanizing press in pressing process is at 180-200 DEG C, with 50-
100Mpa pressure will regenerate chopped carbon fiber and polypropylene compression moulding, the pressing process in vulcanizing press in 3-10mins
Middle pressure release is deflated three times, each 2s, and total tabletting time control is in 5-6mins；
S202, plastic sheet is crushed to obtain regeneration chopped carbon fiber plastic grain by pulverizer；
S203, obtained regeneration chopped carbon fiber plastic grain is evenly distributed by extruder mixing, extrusion
Chopped carbon fiber-PP composite material particle is regenerated,
Wherein, extruder revolving speed is set as 145rpm-155rpm, and 5 Heating Zone Temperature controls are followed successively by 165 DEG C -175
℃-185℃-190℃-190℃；
S204, the plastic grain for obtaining extruder are added in injection molding machine, injection molding, obtain regenerating chopped carbon fiber
Dimension-PP composite material,
Wherein, the Heating Zone Temperature control of 5, injection molding area is followed successively by 195 DEG C -195 DEG C -200 DEG C -200 DEG C -200 DEG C, injection molding
Pressure control is controlled in 45-55MPa, injection moulding speed in 55-65g/s, and die temperance control is at 45-55 DEG C.
4 Application Examples of the invention are described in detail below to illustrate.
Embodiment 1
S100, equally distributed regeneration chopped carbon fiber is prepared:
S101, recycling carbon fibre is prescinded to 1mm；
S102,5g regeneration chopped carbon fiber is blended with 2.5g surfactant, is added in 1L distilled water；
S103, by after blending mixture carry out ultrasonic disperse obtain suspension, power 100w, the used time 15 minutes；
S104, Kapton is layered on flat bottom glass disk, suspension is poured into glass plate, drying is uniformly divided
The regeneration chopped carbon fiber of cloth；
S200, preparation regeneration chopped carbon fiber-PP composite material:
S201, by ready equally distributed regeneration chopped carbon fiber, 5g maleic anhydride inoculated polypropylene is added,
87.5g polypropylene is pressed into plastic sheet, and temperature is set as 180 degrees Celsius, pressure 80MPa when tabletting, lets out three times in tableting processes
Gas, each 2s are pressed, total molding time is 5mins；
S202, plastic sheet is crushed to obtain regeneration chopped carbon fiber plastic grain by pulverizer；
S203, the composite material granular being evenly distributed is squeezed out after mixing obtained particle by extruder, squeezed out
Machine revolving speed 150rpm, 5 Heating Zone Temperature controls are followed successively by 165 DEG C -175 DEG C -185 DEG C -190 DEG C -190 DEG C；
S204, the plastic grain for obtaining extruder are added in injection molding machine, injection molding, obtain regeneration chopped carbon fiber
And PP composite material, 5 Heating Zone Temperature controls of injection molding machine are followed successively by 195 DEG C -195 DEG C -200 DEG C -200 DEG C -200 DEG C,
Injection pressure 50MPa, injection moulding speed 60g/s, dwell pressure 60MPa, dwell time 10s, cooling time 10s, 50 DEG C of mould temperature.
Application Example 1 prepare regeneration chopped carbon fiber-PP composite material scanning electron microscope (SEM) photograph as shown in Figure 1,
It is observed under 2 μ m in size, the main body of strip is regeneration chopped carbon fiber, external tight polypropylene, and script carbon fiber is seen
What is observed should be smooth surface, and there may be larger gaps for the contact interface of polypropylene and carbon fiber, but in this figure
It can be seen that the addition of maleic anhydride inoculated polypropylene is so that regenerate chopped carbon fiber and polypropylene in the contact interface shape of the two
At close combination, the interface combined closely enables composite material to better disperse stress when by external force,
And a booster action directly is played to composite material machinery performance, comparison icon below can do one and explain well.
In the case where 5% regeneration chopped carbon fiber is reinforced, the stretch modulus of gained composite material is the present embodiment
2485MPa is stretched, bending and cantilever beam impact strength respectively reach 25MPa, 35MPa and 107kJ m-2。
Former polypropylene material stretch modulus is only 1790MPa, stretch, bending with cantilever beam impact strength be respectively 22MPa,
27MPa and 95MPa.
1 5g of table regenerates chopped carbon fiber polypropylene composite material and polypropylene material mechanical strength compares
By upper table data we it can be concluded that, the stretch modulus of embodiment, tensile strength, bending strength and cantilever beam punching
Hit intensity is above comparative example, and the stretch modulus of embodiment reaches 2485MPa, is significantly higher than the 1792Mpa of comparative example.
Embodiment 2
S100, equally distributed regeneration chopped carbon fiber is prepared:
S101, recycling carbon fibre is prescinded to 1mm；
S102,1g regeneration chopped carbon fiber is blended with 0.5g surfactant, is added in 1L distilled water；
S103, the mixture after blending is carried out to ultrasonic disperse acquisition suspension, power 100w, used time 20mins:
S104, Kapton is layered on flat bottom glass disk, suspension is poured into glass plate, drying is uniformly divided
The regeneration chopped carbon fiber of cloth；
S200, preparation regeneration chopped carbon fiber-PP composite material:
S201, by ready equally distributed regeneration chopped carbon fiber, 1g maleic anhydride inoculated polypropylene is added,
97.5g polypropylene is pressed into plastic sheet, and temperature is set as 190 degrees Celsius, pressure 80MPa when tabletting, lets out three times in tableting processes
Gas, each 2s are pressed, total molding time is 5mins；
S202, plastic sheet is crushed to obtain regeneration chopped carbon fiber plastic grain by pulverizer；
S203, the composite material granular being evenly distributed is squeezed out after mixing obtained particle by extruder, squeezed out
Machine revolving speed 150rpm, 5 Heating Zone Temperature controls are followed successively by 165 DEG C -175 DEG C -185 DEG C -190 DEG C -190 DEG C；
S204, the plastic grain for obtaining extruder are added in injection molding machine, injection molding, obtain regeneration chopped carbon fiber
And PP composite material, 5 Heating Zone Temperature controls of injection molding machine are followed successively by 195 DEG C -195 DEG C -200 DEG C -200 DEG C -200 DEG C,
Injection pressure 50MPa, injection moulding speed 60g/s, dwell pressure 60MPa, dwell time 10s, cooling time 10s, 50 DEG C of mould temperature.It answers
It is as follows: with embodiment 2 and the comparison of comparative example mechanical performance
2 1g of table regenerates chopped carbon fiber polypropylene composite material and polypropylene material mechanical strength compares
By upper table data we it can be concluded that, the tensile strength of embodiment, bending strength and cantilever beam impact strength are equal
Higher than comparative example.
Embodiment 3
S100, equally distributed regeneration chopped carbon fiber is prepared:
S101, recycling carbon fibre is prescinded to 1mm；
S102,2g regeneration chopped carbon fiber is blended with 1.0g surfactant, is added in 1L distilled water；
S103, by after blending mixture carry out ultrasonic disperse obtain suspension, power 100w, the used time 25 minutes；
S104, Kapton is layered on flat bottom glass disk, suspension is poured into glass plate, drying is uniformly divided
The regeneration chopped carbon fiber of cloth；
S200, preparation regeneration chopped carbon fiber-PP composite material:
S201, by ready equally distributed regeneration chopped carbon fiber, 2g maleic anhydride inoculated polypropylene, 95g is added
Polypropylene is pressed into plastic sheet, and temperature is set as 180 degrees Celsius, pressure 80MPa when tabletting, and pressure release is put three times in tableting processes
Gas, each 2s, total molding time are 5mins；
S202, plastic sheet is crushed to obtain regeneration chopped carbon fiber plastic grain by pulverizer；
S203, the composite material granular being evenly distributed is squeezed out after mixing obtained particle by extruder, squeezed out
Machine revolving speed 150rpm, 5 Heating Zone Temperature controls are followed successively by 165 DEG C -175 DEG C -185 DEG C -190 DEG C -190 DEG C；
S204, the plastic grain for obtaining extruder are added in injection molding machine, injection molding, obtain regeneration chopped carbon fiber
And PP composite material, 5 Heating Zone Temperature controls of injection molding machine are followed successively by 195 DEG C -195 DEG C -200 DEG C -200 DEG C -200 DEG C,
Injection pressure 50MPa, injection moulding speed 60g/s, dwell pressure 60MPa, dwell time 10s, cooling time 10s, 50 DEG C of mould temperature.It answers
It is as follows: with embodiment 3 and the comparison of comparative example mechanical performance
3 2g of table regenerates chopped carbon fiber polypropylene composite material and polypropylene material mechanical strength compares
By upper table data we it can be concluded that, the tensile strength of embodiment, bending strength and cantilever beam impact strength are high
In comparative example.
Embodiment 4
S100, equally distributed regeneration chopped carbon fiber is prepared:
S101, recycling carbon fibre is prescinded to 1mm；
S102,5g regeneration chopped carbon fiber is blended with 2.5g surfactant, is added in 1L distilled water；
S103, by after blending mixture carry out ultrasonic disperse obtain suspension, power 100w, the used time 25 minutes；
S104, Kapton is layered on flat bottom glass disk, suspension is poured into glass plate, drying is uniformly divided
The regeneration chopped carbon fiber of cloth；
S200, preparation regeneration chopped carbon fiber-PP composite material:
S201, by ready equally distributed regeneration chopped carbon fiber, 20g maleic anhydride inoculated polypropylene, 77g is added
Polypropylene is pressed into plastic sheet, and temperature is set as 180 degrees Celsius, pressure 80MPa when tabletting, and pressure release is put three times in tableting processes
Gas, each 2s, total molding time are 5mins；
S202, plastic sheet is crushed to obtain regeneration chopped carbon fiber plastic grain by pulverizer；
S203, the composite material granular being evenly distributed is squeezed out after mixing obtained particle by extruder, squeezed out
Machine revolving speed 150rpm, 5 Heating Zone Temperature controls are followed successively by 165 DEG C -175 DEG C -185 DEG C -190 DEG C -190 DEG C；
S204, the plastic grain for obtaining extruder are added in injection molding machine, injection molding, obtain regeneration chopped carbon fiber
And PP composite material, 5 Heating Zone Temperature controls of injection molding machine are followed successively by 195 DEG C -195 DEG C -200 DEG C -200 DEG C -200 DEG C,
Injection pressure 50MPa, injection moulding speed 60g/s, dwell pressure 60MPa, dwell time 10s, cooling time 10s, 50 DEG C of mould temperature.It answers
It is as follows: with embodiment 4 and the comparison of comparative example mechanical performance
4 5g of table regenerates chopped carbon fiber polypropylene composite material and polypropylene material mechanical strength compares
By upper table data we it can be concluded that, stretch modulus, tensile strength, the bending strength of embodiment are above comparison
Example, and the stretch modulus of embodiment 4 has reached 2515Mpa, is significantly higher than the 1790Mpa of comparative example.
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that the ordinary skill of this field is without wound
The property made labour, which according to the present invention can conceive, makes many modifications and variations.Therefore, all technician in the art
Pass through the available technology of logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Scheme, all should be within the scope of protection determined by the claims.
Claims (10)
1. a kind of regeneration chopped carbon fiber-PP composite material, comprising:
Mass fraction is the regeneration chopped carbon fiber of 1%-5%, and mass fraction is the maleic anhydride inoculated polypropylene of 1%-20%,
Mass fraction is the surfactant of 0.5%-2.5%, and surplus is polypropylene.
2. a kind of regeneration chopped carbon fiber-PP composite material preparation method, it is preferred that the described method includes:
S100, equally distributed regeneration chopped carbon fiber is prepared:
S101, recycling carbon fibre is prescinded；
S102, surfactant, regeneration chopped carbon fiber are blended with distilled water；
S103, the mixture after blending is carried out to ultrasonic disperse acquisition suspension；
S104, Kapton is layered on flat bottom glass disk, suspension is poured into glass plate, dried and be evenly distributed
Regenerate chopped carbon fiber；
S200, preparation regeneration chopped carbon fiber-PP composite material:
S201, ready regeneration chopped carbon fiber and maleic anhydride inoculated polypropylene, polypropylene are pressed into plastic sheet；
S202, plastic sheet is crushed to obtain regeneration chopped carbon fiber plastic grain by pulverizer；
S203, obtained regeneration chopped carbon fiber plastic grain is mixed by extruder, squeezes out the regeneration being evenly distributed
Chopped carbon fiber-PP composite material particle；
S204, the plastic grain for obtaining extruder are added in injection molding machine, injection molding, and it is poly- to obtain regeneration chopped carbon fiber-
Acrylic composite.
3. method according to claim 2, wherein surfactant described in step S102 is that the oily ether of polyoxyethylene 20 is molten
Liquid.
4. method according to claim 2, wherein the body in step S102 between surfactant and regeneration chopped carbon fiber
Product is than being 200-1000: 1.
5. method according to claim 2, wherein the time of ultrasonic disperse is 10-30mins, dispersion in the step S103
Temperature is 30-40 DEG C.
6. method according to claim 2, wherein the surfactant contained in suspension in the step S103 and regeneration
The mass ratio of chopped carbon fiber is 1: 2, and concentration of the dispersing agent in suspension is 0.5g/L-2.5g/L.
7. method according to claim 2, wherein the temperature in the step S201 in vulcanizing press in pressing process
It is arranged at 180-200 DEG C, it will regeneration chopped carbon fiber and polypropylene compression moulding in 3-10mins with 50-100Mpa pressure.
8. method according to claim 2, wherein pressure release is put in pressing process in vulcanizing press in the step S201
Three times, each 2s, total tabletting time control is in 5-6mins for gas.
9. method according to claim 2, wherein extruder revolving speed is set as 145rpm-155rpm in the step S203,
5 Heating Zone Temperature controls are followed successively by 165 DEG C -175 DEG C -185 DEG C -190 DEG C -190 DEG C.
10. method according to claim 2, wherein in the step S204 control of 5 Heating Zone Temperatures for successively 195 DEG C-
195 DEG C -200 DEG C -200 DEG C -200 DEG C, injection pressure control is controlled in 45-55MPa, injection moulding speed in 55-65g/s, mould temperature control
System is at 45-55 DEG C.
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| CN110862607A (en) * | 2019-11-25 | 2020-03-06 | 南通复源新材料科技有限公司 | Regenerated carbon fiber reinforced PP (polypropylene) material based on ultrasonic technology and preparation method thereof |
| WO2022190857A1 (en) * | 2021-03-09 | 2022-09-15 | 三井化学株式会社 | Recycled carbon fiber-reinforced polyolefin composition and use of same |
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| CN110862607A (en) * | 2019-11-25 | 2020-03-06 | 南通复源新材料科技有限公司 | Regenerated carbon fiber reinforced PP (polypropylene) material based on ultrasonic technology and preparation method thereof |
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Application publication date: 20190319 |