CN107540933A - A kind of carbon modified fiber reinforced polypropylene composition and preparation method thereof - Google Patents
A kind of carbon modified fiber reinforced polypropylene composition and preparation method thereof Download PDFInfo
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- CN107540933A CN107540933A CN201610507376.0A CN201610507376A CN107540933A CN 107540933 A CN107540933 A CN 107540933A CN 201610507376 A CN201610507376 A CN 201610507376A CN 107540933 A CN107540933 A CN 107540933A
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Abstract
The invention discloses a kind of carbon modified fiber reinforced polypropylene composition and preparation method thereof, and it is by 30 60 parts of polypropylene, 1 10 parts of polyethylene, 25 45 parts of carbon fiber, 5 15 parts of wollastonite, 05 parts of toughener, 5 10 parts of nucleator, 5 10 parts of surface modification agent is blended, extruding pelletization is prepared.Present invention adds the compatibility that wollastonite and surface modification agent come between common RPP and carbon fiber；And similar anchoring node, i.e. crosslinking points are formd between them, so as to improve the bond state of carbon fibre and acrylic resin, the fine separation with acrylic resin of carbon is reduced, so as to greatly reduce the exposed of carbon fibre.
Description
Technical field
The invention belongs to field of polymer composite material, and in particular to a kind of carbon modified fiber reinforced polypropylene composition and its
Preparation method.
Background technology
Polypropylene is the highly crystalline polymer of nontoxic, odorless, tasteless milky, and molecular weight about 80,000-15 ten thousand, density is only
There is 0.90-0.91g/cm3, it is one of kind most light in current all plastics.In addition, polypropylene is particularly stable to water, in water
In water absorption rate be only 0.01%.Although polyacrylic good moldability, because its shrinkage factor is big, about 1%~2.5%, so
Thick article is made easily to be recessed, therefore to the higher part of some dimensional accuracies, it is difficult to reach requirement.
At present mainly by adding glass fiber reinforced polypropylene, intensity, the heat distortion temperature of polypropylene material can be improved
And dimensional stability, the application field of polypropylene material is expanded, is widely used in the fields such as electronic apparatus, automobile, building.But
Add after glass and then easily occur floating fine phenomenon, it is usually to be caused by glass emergence on the surface to float fine phenomenon, and white glass melts in plastics
Floated during body filling flow and be exposed to appearance, just formed radial white vestige after shaping to be condensed on plastic surface, work as plastic
For black when can because shade deviation increase and it is more obvious.So floating fine phenomenon not only influences the cosmetic look of PP products, also
Influence its performance as resistance to rolled-up stock.
The content of the invention
It is an object of the invention to provide a kind of carbon modified fiber reinforced polypropylene composition and preparation method thereof, and it is floating to improve it
Fine phenomenon, and improve the correlated performance of product.
Technical scheme is as follows：
The invention provides a kind of carbon modified fiber reinforced polypropylene composition, its prepared by weight by following components and
Into：
Further scheme, described carbon fiber are chopped carbon fiber, and its length is 2-5mm, a diameter of 7-13 microns.
The average grain diameter of described wollastonite is 100 μm, compression strength 100Mpa, density 0.25g/cc.
Described toughener is selected from maleic anhydride grafted ethene-octene copolymer, ethylene-methyl acrylate copolymer or second
One or more in alkene-methyl acrylate-GMA.
The nucleator is sodium benzoate.
The surface modification agent is that ethylene bis-fatty acid amides (TAF) and silicone are 1 in mass ratio：1 is mixed
Mixture.
Present invention also offers a kind of preparation method of above-mentioned carbon modified fiber reinforced polypropylene composition, including following step
Suddenly：
(1) polypropylene and polyethylene are dried respectively；
(2) by proportioning, by carbon fiber, the 5- of the polypropylene of dry 30-60 parts, the polyethylene of 1-10 parts and 25-45 parts
The surface modification agent of 15 parts of wollastonite, the toughener of 0-5 parts, the nucleator of 5-10 parts, 5-10 parts, add high-speed mixer
In, 3-5min is stirred in high-speed mixer；
(3) well mixed material is added from the charge door of double screw extruder, through double screw extruder melting extrusion,
It is granulated, is prepared into carbon modified fiber reinforced polypropylene composition.
The polypropylene of described drying be temperature be 50-80 DEG C, dry 4-5h；Polyethylene is in 50-80 DEG C of temperature, drying
4-5h。
The processing technology of described double screw extruder is：160-170 DEG C of the area's temperature of double screw extruder one, two area's temperature
165-175 DEG C, three 180-190 DEG C of area's temperature, four 195-205 DEG C of area's temperature, five 195-205 DEG C of area's temperature, six area temperature 200-
210 DEG C, 200-210 DEG C of head temperature, engine speed is 15-35HZ.
The present invention compared with the existing technology, has the advantages that：
1st, wollastonite and surface modification agent are added in modified carbon fiber RPP of the invention, due to surface modification agent
Middle TAF is to introduce polar group on the basis of ethylene bis-fatty acid amides, its enhanced after being mixed with wollastonite polypropylene with
Compatibility between carbon fiber；And similar anchoring node, i.e. crosslinking points are formd between carbon fiber, polypropylene, improve carbon
Bond state between fine and polypropylene, reduces that carbon is fine to be separated with polyacrylic.
2nd, cooperated between wollastonite and surface modification agent, improve the dispersiveness of carbon fiber, increase polypropylene and carbon
Fiber interface adhesive strength, the fine separation with resin of carbon is reduced, so as to greatly reduce the exposed of carbon fibre.
3rd, carbon modified fiber reinforced polypropylene composition prepared by the present invention has excellent mechanical property；It is further, since poly-
Ethene has excellent resistance to low temperature, and its minimum reachable -100~-70 DEG C of temperature in use, its addition can improve polypropylene group
The resistance to low temperature of compound.
Embodiment
The present invention is further illustrated with reference to embodiments.
Measuring mechanical property method：
Polypropene composition prepared by the present invention is molded into survey using injection molding machine of plastic using GB standards at 230-270 DEG C
Have a try sample, its test bars size (length x width x thickness) is respectively：Tensile bars (dumbbell shape), 170.0 × 10.0 ×
4.0；Bending batten, 80.0 × 10.0 × 4.0；Non-notch impact batten, 80.0 × 10.0 × 4.0；Notch shock batten, 80.0
× 10.0 × 4.0, v-notch, notch depth 1/5.
Test sample is after temperature is (23 ± 2) DEG C, places 16h in the standard environment that humidity is (50 ± 5) % after shaping
Test its correlated performance, test environment is (23 ± 2) DEG C, humidity is (50 ± 5) %.
Tensile strength and elongation at break：Tested by GB 1040, draw speed 5mm/min.
Bending strength and bending modulus：Tested by GB 9341, rate of bending 1.25mm/min.
Simply supported beam notch impact strength：Tested by GB 1043.
Raw material used in example below is：Carbon fiber is chopped carbon fiber, and its length is 2-5mm, a diameter of 7-
13 microns.
The average grain diameter of wollastonite is 100 μm, compression strength 100Mpa, density 0.25g/cc.
Surface modification agent is that ethylene bis-fatty acid amides (TAF) and silicone are 1 in mass ratio：1 mixed it is mixed
Compound.
Embodiment 1
(1) by polypropylene in temperature 50 C, dry 4h；Polyethylene is in temperature 50 C, dry 4h；
(2) weigh dry 60 parts of polypropylene, 1 part of polyethylene, 25 parts of carbon fiber, 5 parts of wollastonite, 10 parts
Nucleator sodium benzoate, 10 parts of surface modification agent；
(3) material weighed up in above-mentioned steps (2) is stirred into 3min in high-speed mixer；
(4) charge door of double screw extruder and then by above-mentioned well mixed material is added, is melted through double screw extruder
Melt extrusion, be granulated, polypropene composition is made.
The processing technology of described double screw extruder is：160 DEG C of one area's temperature of double screw extruder, two area's temperature 170
DEG C, three 185 DEG C of area's temperature, four 185 DEG C of area's temperature, five 200 DEG C of area's temperature, six 200 DEG C of area's temperature, 210 DEG C of head temperature, main frame
Rotating speed is 15HZ.The performance test results are shown in Table 1.
Embodiment 2
(1) by polypropylene in 80 DEG C of temperature, dry 5h；Polyethylene is in 80 DEG C of temperature, dry 5h；
(2) weigh dry 40 parts of polypropylene, 10 parts of polyethylene, 30 parts of carbon fiber, 5 parts of wollastonite, 5 parts
Toughener (maleic anhydride grafted ethene-octene copolymer and ethylene-methyl acrylate copolymer), 8 parts of nucleator benzoic acid
Sodium, 8 parts of surface modification agent；
(3) material weighed up in above-mentioned steps (2) is stirred into 5min in high-speed mixer；
(4) charge door of double screw extruder and then by above-mentioned well mixed material is added, is melted through double screw extruder
Melt extrusion, be granulated, polypropene composition is made；
The processing technology of described double screw extruder is：170 DEG C of one area's temperature of double screw extruder, two area's temperature 180
DEG C, three 195 DEG C of area's temperature, four 200 DEG C of area's temperature, five 210 DEG C of area's temperature, six 190 DEG C of area's temperature, 210 DEG C of head temperature, main frame
Rotating speed is 15HZ.The performance test results are shown in Table 1.
Embodiment 3
(1) by polypropylene in temperature 60 C, dry 4h；Polyethylene is in temperature 70 C, dry 5h；
(2) weigh dry 40 parts of polypropylene, 5 parts of polyethylene, 35 parts of carbon fiber, 10 parts of wollastonite, 3 parts
Toughener ethylene-methyl acrylate copolymer, 5 parts of nucleator sodium benzoate, 5 parts of surface modification agent；
(3) material weighed up in above-mentioned steps (2) is stirred into 4min in high-speed mixer；
(4) charge door of double screw extruder and then by above-mentioned well mixed material is added, is melted through double screw extruder
Melt extrusion, be granulated, polypropene composition is made；
The processing technology of described double screw extruder is：180 DEG C of one area's temperature of double screw extruder, two area's temperature 190
DEG C, three 200 DEG C of area's temperature, four 205 DEG C of area's temperature, five 205 DEG C of area's temperature, six 195 DEG C of area's temperature, 210 DEG C of head temperature, main frame
Rotating speed is 15HZ.The performance test results are shown in Table 1.
Embodiment 4
(1) by polypropylene in temperature 70 C, dry 4h；Polyethylene is in temperature 60 C, dry 5h；
(2) weigh dry 30 parts of polypropylene, 5 parts of polyethylene, 45 parts of carbon fiber, 15 parts of wollastonite, 5 parts
Nucleator sodium benzoate, 5 parts of surface modification agent；
(3) material weighed up in above-mentioned steps (2) is stirred into 4min in high-speed mixer；
(4) charge door of double screw extruder and then by above-mentioned well mixed material is added, is melted through double screw extruder
Melt extrusion, be granulated, polypropene composition is made；
The processing technology of described double screw extruder is：180 DEG C of one area's temperature of double screw extruder, two area's temperature 190
DEG C, three 200 DEG C of area's temperature, four 205 DEG C of area's temperature, five 205 DEG C of area's temperature, six 195 DEG C of area's temperature, 210 DEG C of head temperature, main frame
Rotating speed is 15HZ.The performance test results are shown in Table 1.
Comparative example 1
(1) by polypropylene in temperature 60 C, dry 5h；Polyethylene is in temperature 60 C, dry 5h；
(2) 50 parts dry of polypropylene, 35 parts of carbon fiber, 5 parts of toughener, 5 parts of nucleator benzoic acid are weighed
Sodium；
(3) material weighed up in above-mentioned steps (2) is stirred into 5min in high-speed mixer；
(4) charge door of double screw extruder and then by above-mentioned well mixed material is added, is melted through double screw extruder
Melt extrusion, be granulated；
The processing technology of described double screw extruder is：180 DEG C of one area's temperature of double screw extruder, two area's temperature 190
DEG C, three 200 DEG C of area's temperature, four 205 DEG C of area's temperature, five 205 DEG C of area's temperature, six 195 DEG C of area's temperature, 210 DEG C of head temperature, main frame
Rotating speed is 15HZ.The performance test results are shown in Table 1.
Comparative example 2
(1) by polypropylene in temperature 50 C, dry 5h；Polyethylene is in temperature 50 C, dry 4-5h；
(2) 40 parts dry of polypropylene, 35 parts of carbon fiber, 5 parts of toughener, 5 parts of nucleator benzoic acid are weighed
Sodium；
(3) material weighed up in above-mentioned steps (2) is stirred into 5min in high-speed mixer；
(4) charge door of double screw extruder and then by above-mentioned well mixed material is added, is melted through double screw extruder
Melt extrusion, be granulated；
The processing technology of described double screw extruder is：180 DEG C of one area's temperature of double screw extruder, two area's temperature 190
DEG C, three 200 DEG C of area's temperature, four 205 DEG C of area's temperature, five 205 DEG C of area's temperature, six 195 DEG C of area's temperature, 210 DEG C of head temperature, main frame
Rotating speed is 15HZ.The performance test results are shown in Table 1.
Comparative example 3
(1) by polypropylene in 150 DEG C of temperature, dry 5h；Polyethylene is in temperature 60 C, dry 4-5h；
(2) 40 parts dry of polypropylene, 35 parts of carbon fiber, 5 parts of toughener, 5 parts of nucleator benzoic acid are weighed
Sodium；
(3) material weighed up in above-mentioned steps (2) is stirred into 5min in high-speed mixer；
(4) charge door of double screw extruder and then by above-mentioned well mixed material is added, is melted through double screw extruder
Melt extrusion, be granulated；
The processing technology of described double screw extruder is：180 DEG C of one area's temperature of double screw extruder, two area's temperature 190
DEG C, three 200 DEG C of area's temperature, four 205 DEG C of area's temperature, five 205 DEG C of area's temperature, six 195 DEG C of area's temperature, 210 DEG C of head temperature, main frame
Rotating speed is 15HZ.The performance test results are shown in Table 1.
Table 1
Due to adding wollastonite and surface modification agent in the present invention, so as between common RPP and carbon fiber
Compatibility；And similar anchoring node, i.e. crosslinking points are formd between carbon fiber, polypropylene, improve glass with it is polyacrylic
Bond state, reduce glass and separated with polyacrylic, so as to greatly reduce the exposed of glass.
The comparison of embodiment and comparative example can be seen that carbon modified fiber reinforced polypropylene produced by the present invention from upper table 1
The bending strength of composition, bending modulus, tensile strength, elongation at break, simply supported beam notch impact strength are obviously higher than right
Material prepared by ratio, and the surface-brightening of product, without floating fibre.
The above-mentioned description to embodiment is understood that for ease of those skilled in the art and using this hair
It is bright.Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein
General Principle is applied in other embodiment without by performing creative labour.Therefore, the invention is not restricted to implementation here
Example, for those skilled in the art according to the announcement of the present invention, not departing from improvement that scope made and modification all should be
Within protection scope of the present invention.
Claims (8)
- A kind of 1. carbon modified fiber reinforced polypropylene composition, it is characterised in that：It is prepared by weight by following components：Polypropylene 30-60 parts,Polyethylene 1-10 parts,Carbon fiber 25-45 parts,Wollastonite 5-15 parts,Toughener 0-5 parts,Nucleator 5-10 parts,Surface modification agent 5-10 parts.
- A kind of 2. carbon modified fiber reinforced polypropylene composition according to claim 1, it is characterised in that：The carbon fiber is Chopped carbon fiber, its length are 2-5mm, a diameter of 7-13 microns.
- A kind of 3. carbon modified fiber reinforced polypropylene composition according to claim 1, it is characterised in that：The wollastonite Average grain diameter is 100 μm, compression strength 100Mpa, density 0.25g/cc.
- A kind of 4. carbon modified fiber reinforced polypropylene composition according to claim 1, it is characterised in that：The toughener choosing From maleic anhydride grafted ethene-octene copolymer, ethylene-methyl acrylate copolymer or ethylene-methyl acrylate-metering system One or more in acid glycidyl ester.
- A kind of 5. carbon modified fiber reinforced polypropylene composition according to claim 1, it is characterised in that：The nucleator isSodium benzoate.
- A kind of 6. carbon modified fiber reinforced polypropylene composition according to claim 1, it is characterised in that：The surface modification Agent is that ethylene bis-fatty acid amides and silicone are 1 in mass ratio：1 mixture mixed.
- 7. a kind of preparation method of carbon modified fiber reinforced polypropylene composition as described in claim any one of 1-6, its feature It is：Its step is as follows：（1）Polypropylene and polyethylene are dried respectively；（2）By proportioning, by dried polypropylene, polyethylene, carbon fiber, wollastonite, toughener, nucleator and surface modification Agent, add in high-speed mixer and stir 3-5min；（3）Well mixed material is added from the charge door of double screw extruder, through double screw extruder melting extrusion, made Grain, is prepared into carbon modified fiber reinforced polypropylene composition.
- 8. preparation method according to claim 7, it is characterised in that：The step（1）Middle polypropylene and polyethylene be Temperature dries 4-5h under the conditions of being 50-80 DEG C；The step（3）Middle 160-170 DEG C of the area's temperature of double screw extruder one, two 165-175 DEG C of area's temperature, three area temperature 180- 190 DEG C, four 195-205 DEG C of area's temperature, five 195-205 DEG C of area's temperature, six 200-210 DEG C of area's temperature, head temperature 200-210 DEG C, engine speed is 15-35HZ.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110734603A (en) * | 2019-09-03 | 2020-01-31 | 会通新材料股份有限公司 | carbon fiber reinforced polypropylene composite material pre-impregnated carbon fiber cloth and preparation method thereof |
| CN115305644A (en) * | 2022-07-30 | 2022-11-08 | 苏州大乘环保新材有限公司 | Permeable surface cloth for carbon fiber rainwater collection module and preparation method thereof |
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| US20120088858A1 (en) * | 2004-11-08 | 2012-04-12 | Olivier Guiselin | Polymer-Fiber Composite Building Material with Bulk and Aesthetically Functional Fillers |
| CN103589058A (en) * | 2013-10-24 | 2014-02-19 | 合肥会通新材料有限公司 | Reinforced polypropylene composite material and preparation method thereof |
| CN105504489A (en) * | 2015-12-23 | 2016-04-20 | 浙江品诺新材料有限公司 | Alkali-free glass fiber reinforcing modified polypropylene composite material and preparing method thereof |
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2016
- 2016-06-29 CN CN201610507376.0A patent/CN107540933A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120088858A1 (en) * | 2004-11-08 | 2012-04-12 | Olivier Guiselin | Polymer-Fiber Composite Building Material with Bulk and Aesthetically Functional Fillers |
| CN103589058A (en) * | 2013-10-24 | 2014-02-19 | 合肥会通新材料有限公司 | Reinforced polypropylene composite material and preparation method thereof |
| CN105504489A (en) * | 2015-12-23 | 2016-04-20 | 浙江品诺新材料有限公司 | Alkali-free glass fiber reinforcing modified polypropylene composite material and preparing method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110734603A (en) * | 2019-09-03 | 2020-01-31 | 会通新材料股份有限公司 | carbon fiber reinforced polypropylene composite material pre-impregnated carbon fiber cloth and preparation method thereof |
| CN115305644A (en) * | 2022-07-30 | 2022-11-08 | 苏州大乘环保新材有限公司 | Permeable surface cloth for carbon fiber rainwater collection module and preparation method thereof |
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Application publication date: 20180105 |