CN107540934A - A kind of carbon fiber reinforced polypropylene composition for improving floating fine phenomenon and preparation method thereof - Google Patents
A kind of carbon fiber reinforced polypropylene composition for improving floating fine phenomenon and preparation method thereof Download PDFInfo
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- CN107540934A CN107540934A CN201610507440.5A CN201610507440A CN107540934A CN 107540934 A CN107540934 A CN 107540934A CN 201610507440 A CN201610507440 A CN 201610507440A CN 107540934 A CN107540934 A CN 107540934A
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Abstract
The present invention provides a kind of carbon fiber reinforced polypropylene composition for improving floating fine phenomenon and preparation method thereof, and it is by 30 60 parts of polypropylene, 1 10 parts of polyethylene, 25 45 parts of carbon fibers, 5 15 parts of micas, 05 parts of toughener, 5 10 portions of nucleators and 5 10 parts of silicone oil are blended, extruding pelletization is prepared.The mica and silicone oil that are added in the present invention enhance the compatibility between polypropylene and carbon fiber, and crosslinking points are formed between carbon fiber, acrylic resin, improve the fine bond state with resin of carbon, reduce the fine separation with resin of carbon.Meanwhile cooperated between mica and silicone oil, the dispersiveness of carbon fiber is improved, increases polypropylene and carbon fiber interfacial adhesion strength, reduces the fine separation with resin of carbon, so as to greatly reduce the exposed of carbon fibre, and improves the compressive property of polypropene composition.
Description
Technical field
The invention belongs to field of polymer composite material, and in particular to a kind of fine enhancing poly- third of the carbon for improving floating fine phenomenon
Ene compositions and preparation method thereof.
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 polypropylene is good, because its shrinkage factor is big, about 1%~2.5%, so system
Easily it is recessed into thick article, 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
Then easily fine phenomenon is floated in appearance after addition carbon fibre, and floating fine phenomenon is usually to be caused by carbon fibre is exposed, and white carbon fibre 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 PA 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 fiber reinforced polypropylene composition for improving floating fine phenomenon and its preparation side
Method.
Technical scheme is as follows：
The invention provides a kind of carbon fiber reinforced polypropylene composition for improving floating fine phenomenon, its following components and weight
Part：
Described carbon fiber is chopped carbon fiber, and its length is 2-5mm, a diameter of 7-13 microns.
Moisture≤0.1% of the mica, oil absorption≤25g/100g, draw ratio 70.
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.
Present invention also offers a kind of preparation method of the above-mentioned carbon fiber reinforced polypropylene composition for improving floating fine phenomenon,
This method comprises the following steps：
(1) polypropylene and polyethylene are dried respectively；
(2) by proportioning, dried polypropylene, polyethylene, carbon fiber, mica, toughener, nucleator and silicone oil add
Enter and 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, being prepared into improves the carbon fiber reinforced polypropylene composition for floating fibre.
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, the present invention adds mica and silicone oil and enhances compatibility between polypropylene and carbon fiber, and in carbon fiber, poly-
Crosslinking points are formed between allyl resin, improve the fine bond state with acrylic resin of carbon, reduce the fine separation with resin of carbon.
Meanwhile cooperated between mica and silicone oil, the dispersiveness of carbon fiber is improved, increase polypropylene is compatible with carbon fiber interface
Property, the fine separation with resin of carbon is reduced, so as to greatly reduce the exposed of carbon fibre.
2nd, due to the mechanical function thickness degree increase between the fine surface of carbon and matrix resin, make to be in carbon fibre near surface
Matrix be easier to occur shear yielding, increase the absorption to impact energy and dissipative effect, promote carbon fibre between matrix resin
Toughening effect.So that carbon fibre is coated well in resin, the fine flowing synchronous with resin of carbon in process, no
Easily rip, greatly reduce the exposed of carbon fibre.
3rd, mica and silicone oil reduce that carbon fibre is exposed, so as to correspondingly reduce the fine friction with screw rod of carbon, make screw rod
Moment of torsion also decreases, easy to process.
4th, poly- third big gun ene compositions prepared by the present invention have excellent mechanical property.
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.
Carbon fiber used in example below is chopped carbon fiber, and its length is 2-5mm, a diameter of 7-13 microns.
Moisture≤0.1% of the mica, oil absorption≤25g/100g, draw ratio 70.
Embodiment 1
(1) by polypropylene in temperature 50 C, dry 4h；Polyethylene is in temperature 50 C, dry 4h；
(2) 60 parts dry of polypropylene, 1 part of polyethylene, 25 parts of carbon fiber, 5 parts of mica, 10 parts of benzene are weighed
Sodium formate, 5 parts of silicone oil；
(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) 40 parts dry of polypropylene, 10 parts of polyethylene, 30 parts of carbon fiber, 5 parts of mica, 5 parts of increasing are weighed
Tough dose (maleic anhydride grafted ethene-octene copolymer), 8 parts of sodium benzoate, 8 parts of silicone oil；
(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) 40 parts dry of polypropylene, 5 parts of polyethylene, 35 parts of carbon fiber, 10 parts of mica, 3 parts of increasing are weighed
Tough dose of (ethylene-methyl acrylate copolymer and ethylene-methyl acrylate-glyceryl methacrylate), 5 parts of benzoic acid
Sodium, 10 parts of silicone oil；
(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) 30 parts dry of polypropylene, 5 parts of polyethylene, 45 parts of carbon fiber, 15 parts of mica, 5 parts of benzene are weighed
Sodium formate, 5 parts of silicone oil；
(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 sodium benzoate are weighed；
(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 to obtain PP composite material；
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 sodium benzoate are weighed；
(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, material is through twin-screw extrusion
Machine melting extrusion, it is granulated to obtain PP composite material；
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 sodium benzoate are weighed；
(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 to obtain PP composite material；
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
Mica and silicone oil enhance the compatibility between polypropylene and carbon fiber in the present invention, and in carbon fiber, polypropylene
Crosslinking points are formd between resin, improve the fine bond state with resin of carbon, reduce the fine separation with resin of carbon.Meanwhile cloud
Cooperated between female and silicone oil, improve the dispersiveness of carbon fiber, increase polypropylene and carbon fiber interfacial adhesion strength, subtract
Few fine separation with resin of carbon, so as to greatly reduce the exposed of carbon fibre.
The comparison of embodiment and comparative example can be seen that the bending strength, curved of obtained polypropene composition from upper table 1
Bent modulus, tensile strength, elongation at break, simply supported beam notch impact strength obviously higher than material prepared by comparative example, and
The surface-brightening of product, without floating fibre.And material prepared by comparative example has 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 (7)
- A kind of 1. carbon fiber reinforced polypropylene composition for improving floating fine phenomenon, it is characterised in that：Its by following components by weight Part is prepared：Polypropylene 30-60 parts,Polyethylene 1-10 parts,Carbon fiber 25-45 parts,Mica 5-15 parts,Toughener 0-5 parts,Nucleator 5-10 parts,Silicone oil 5-10 parts.
- A kind of 2. carbon fiber reinforced polypropylene composition for improving floating fine phenomenon according to claim 1, it is characterised in that： The carbon fiber is chopped carbon fiber, and its length is 2-5mm, a diameter of 7-13 microns.
- A kind of 3. carbon fiber reinforced polypropylene composition for improving floating fine phenomenon according to claim 1, it is characterised in that： Moisture≤0.1% of the mica, oil absorption≤25g/100g, draw ratio 70.
- A kind of 4. carbon fiber reinforced polypropylene composition for improving floating fine phenomenon according to claim 1, it is characterised in that： The toughener is selected from maleic anhydride grafted ethene-octene copolymer, ethylene-methyl acrylate copolymer or ethylene-acrylic acid One or more in methyl esters-GMA.
- A kind of 5. carbon fiber reinforced polypropylene composition for improving floating fine phenomenon according to claim 1, it is characterised in that： The nucleator is sodium benzoate.
- A kind of 6. preparation of carbon fiber reinforced polypropylene composition for improving floating fine phenomenon as described in claim any one of 1-5 Method, it is characterised in that：Its step is as follows：（1）Polypropylene and polyethylene are dried respectively；（2）By proportioning, dried polypropylene, polyethylene, carbon fiber, mica, toughener, nucleator and silicone oil add high 3-5min is stirred in fast mixer；（3）Well mixed material is added from the charge door of double screw extruder, through double screw extruder melting extrusion, made Grain, being prepared into improves the carbon fiber reinforced polypropylene composition for floating fibre.
- 7. preparation method according to claim 6, it is characterised in that：The step（1）It in temperature is 50- that middle polypropylene, which is, 4-5h is dried under the conditions of 80 DEG C；Polyethylene is to dry 4-5h under the conditions of temperature is 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 (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117186623A (en) * | 2023-09-11 | 2023-12-08 | 昆山红苹果塑胶新材料有限公司 | Heat-resistant stable TPU film and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050220741A1 (en) * | 2004-03-22 | 2005-10-06 | Christophe Dumousseaux | Cosmetic composition comprising concave particles |
| 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 |
-
2016
- 2016-06-29 CN CN201610507440.5A patent/CN107540934A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050220741A1 (en) * | 2004-03-22 | 2005-10-06 | Christophe Dumousseaux | Cosmetic composition comprising concave particles |
| 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 |
|---|---|---|---|---|
| CN117186623A (en) * | 2023-09-11 | 2023-12-08 | 昆山红苹果塑胶新材料有限公司 | Heat-resistant stable TPU film and preparation method thereof |
| CN117186623B (en) * | 2023-09-11 | 2024-02-13 | 昆山红苹果塑胶新材料有限公司 | Heat-resistant stable TPU film and preparation method thereof |
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Application publication date: 20180105 |