CN102875892A - High-performance polypropylene alloy prepared through waste and old polypropylene materials and preparation method and application thereof - Google Patents
High-performance polypropylene alloy prepared through waste and old polypropylene materials and preparation method and application thereof Download PDFInfo
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- CN102875892A CN102875892A CN201210328153XA CN201210328153A CN102875892A CN 102875892 A CN102875892 A CN 102875892A CN 201210328153X A CN201210328153X A CN 201210328153XA CN 201210328153 A CN201210328153 A CN 201210328153A CN 102875892 A CN102875892 A CN 102875892A
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- 239000004743 Polypropylene Substances 0.000 title claims abstract description 139
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 139
- -1 polypropylene Polymers 0.000 title claims abstract description 137
- 239000002699 waste material Substances 0.000 title claims abstract description 125
- 239000000463 material Substances 0.000 title claims abstract description 116
- 238000002360 preparation method Methods 0.000 title claims abstract description 55
- 239000000956 alloy Substances 0.000 title claims abstract description 48
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 45
- 239000002994 raw material Substances 0.000 claims abstract description 21
- 229920002943 EPDM rubber Polymers 0.000 claims abstract description 15
- 239000002245 particle Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 14
- 238000005520 cutting process Methods 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 12
- 239000003381 stabilizer Substances 0.000 claims description 11
- 239000008188 pellet Substances 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 9
- 230000008018 melting Effects 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 8
- 238000010298 pulverizing process Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 238000005453 pelletization Methods 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 3
- 239000000155 melt Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000032683 aging Effects 0.000 abstract description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 abstract 2
- 239000012760 heat stabilizer Substances 0.000 abstract 1
- 238000006748 scratching Methods 0.000 abstract 1
- 230000002393 scratching effect Effects 0.000 abstract 1
- 230000008859 change Effects 0.000 description 6
- 238000011160 research Methods 0.000 description 6
- 230000002950 deficient Effects 0.000 description 5
- 238000011056 performance test Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 239000012752 auxiliary agent Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000000320 anti-stroke effect Effects 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- 235000006708 antioxidants Nutrition 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 229920001897 terpolymer Polymers 0.000 description 2
- 241001274660 Modulus Species 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000013502 plastic waste Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003678 scratch resistant effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/919—Thermal treatment of the stream of extruded material, e.g. cooling using a bath, e.g. extruding into an open bath to coagulate or cool the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses high-performance polypropylene alloy prepared through waste and old polypropylene materials and a preparation method and application of the high-performance polypropylene alloy. According to the prescription of raw materials, the polypropylene alloy comprises the following components by weight: 60 to 85 parts of polypropylene, 0.2 to 0.4 part of B-215 long-acting heat stabilizer, 5 to 10 parts of EPDM (Ethylene-Propylene-Diene Monomer) and 10 to 30 parts of BaSO4. The polypropylene alloy disclosed by the invention has the characteristics of high performance, scratching resistance, low temperature resistance, good fire resistance, ageing resistance, and the like; and the polypropylene alloy can be applied to preparing housings of an electric fan and an electric cooker, manufacturing a showing stand or a car bumper, has resistance to high temperature of 80 DEG C and resistance to low temperature of minus 40 DEG C, and has the service life being over 20 years.
Description
Technical field
The present invention relates to technical field of polymer materials, relate in particular to plastic waste re-using technology, be specifically related to utilize the waste and old polypropylene material to prepare the technology of high-performance polypropylene alloy.
Background technology
Polypropylene (PP) is a kind of material that is in daily use, and therefore is widely used in preparation electric type case material, automotive material or showing stand material etc., and a large amount of old material, waste material are arranged each period.Can produce a large amount of defective materials or substandard products, recovery article in process of production, the at present processing for waste material, defective material, substandard products or recovery article mainly contains following several method:
(1) burning or land-fill method because remittance produces the obnoxious flavoures such as sulfurous gas in burning process, very easily cause environmental pollution, and take land-fill method, waste land resources, the refractory organics of material also can cause very large harm to environment, and present this mode progressively is eliminated;
(2) waste electrical equipment housing material, defective material, substandard products or recovery article are simply reclaimed take out grain and do not carry out any scientific and technical modification, being downgraded to common plastics uses, although solved problem of environmental pollution, but fail to take full advantage of the economic worth of these defective materials, and flow of material inferior is to market, will produce serious consequence, cause the appearance of the product of inferior quality.
Therefore, how to reclaim and fully use these waste materials, defective material, substandard products or recovery article, the new economic benefit of rear generation that makes it to regenerate is a problem of benefiting the nation and the people.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, providing a kind of is that major ingredient preparation gets by the waste and old polypropylene material, has the high-performance polypropylene alloy of the characteristics such as damage resistant, high-performance, good flame resistance, high temperature resistant and winter hardiness are good.
Another object of the present invention provides the preparation method of above-mentioned polypropylene alloy.
Another object of the present invention provides the application of above-mentioned polypropylene alloy in preparation electric fan housing, electric cooker housing, showing stand or nerf bar etc.
Above-mentioned purpose of the present invention is achieved by following scheme:
A kind of high-performance polypropylene alloy by the preparation of waste and old polypropylene material, its composition of raw materials is comprised of the each component of following parts by weight:
60～85 parts of waste and old polypropylene crushed materials;
0.2～0.4 part of the long-acting thermo-stabilizer of B-215;
5～10 parts of EPDM;
BaSO
410～30 parts.
In the above-mentioned raw materials prescription, described waste and old polypropylene crushed material is that the particle diameter that will be obtained after pulverization process by the materials such as waste electrical equipment housing, waste and old showing stand or junked-auto safety lever of polypropylene preparation is less than or equal to the crushed material of 10mm; The described materials such as waste electrical equipment housing, waste and old showing stand or junked-auto safety lever by the polypropylene preparation refer to waste electrical equipment housing, waste and old showing stand or the junked-auto safety lever by the virgin pp manufacturing, and polypropylene content accounts for waste electrical equipment housing, waste and old showing stand or junked-auto safety lever that the material more than 95% is made.
In the above-mentioned raw materials prescription, the inventor finds by research, the waste and old polypropylene crushed material is as major ingredient, the size of its particle diameter has to a certain degree impact to realization of the present invention, if pellet is excessive, then compounding effect is poor, impact stirs, affect the melting mixing in the production technique, therefore by after the research, the contriver determines that the particle diameter of control waste and old polypropylene crushed material is less than or equal to 10mm.
In the above-mentioned raw materials prescription, the long-acting thermo-stabilizer of described B-215 is the commercially available prod, plays in the present invention heat resistanceheat resistant, resist oxygen aging, prevents the base material thermooxidative degradation, keeps the Material Flow index, prevents the oxidation of course of processing polymkeric substance and solve the reduced viscosity of waste and old base material, the effect of gloss degenerate problem.
In the above-mentioned raw materials prescription, the Chinese of described EPDM is ethylene-propylene-dicyclopentadiene terpolymers (terpolymer EP rubber); EPDM of the present invention is the commercially available prod, and it plays in the present invention anti-oxidant, corrosion-resistant, anti-superheated water, strengthens the effect of elasticity, enhancing cementability and weighting agent.
In the above-mentioned raw materials prescription, described BaSO
4Adopt commercially available Industrial products, play in the present invention the effect that improves polypropylene alloy intensity and hardness.
The preparation method of above-mentioned a kind of high-performance polypropylene alloy by waste and old polypropylene material preparation, it specifically comprises the steps:
The preparation of step 1. waste and old polypropylene crushed material
Collect the waste and old polypropylene material, use cuts machine the waste and old polypropylene material that length surpasses 600mm is cut, make and cut rear its length less than 600mm, the waste and old polypropylene material that again the waste and old polypropylene material after cutting and length is no more than 600mm is together sent on the pulverizer and is pulverized, obtaining granularity less than or equal to the particle of 10mm, then is required waste and old polypropylene crushed material;
Step 2. is according to waste and old polypropylene crushed material, B-215 long-acting thermo-stabilizer, EPDM and the BaSO of above-mentioned raw materials prescription with step 1 preparation
4Send in the twin screw extruder after repeatedly mixing in the threading stirrer; carry out melting mixing under 190～230 ℃ temperature, the gained melt cools off through tank after being extruded by twin screw extruder; introduce dicing machine and carry out the pelletizing operation, collect pellet and be polypropylene alloy required for the present invention.
In the above-mentioned steps 1, the materials such as waste electrical equipment, waste and old showing stand and junked-auto safety lever that purchase comes are selected affirmation, select by the waste electrical equipment housing of virgin pp manufacturing, waste and old showing stand or junked-auto safety lever and by polypropylene content and account for waste electrical equipment housing, waste and old showing stand or the junked-auto safety lever that the material more than 95% is made, be the waste and old polypropylene material; Because the waste and old polypropylene material is all larger, so all above length 600mm's, to cut less than just advancing the pulverizer pulverizing below the 600mm by cutting machine, cutting acc power is 60kw, motor speed is 1400 rev/mins, by speed change scissors speed be 600 turn/hour, the waste and old polypropylene material that is no more than 600mm through the waste and old polypropylene material after cutting and length is together sent on the pulverizer and is pulverized; The power of described pulverizer is 22kw, and motor speed is 1400 rev/mins, makes the rotating speed of crushing knife become 700 rev/mins by transmitting speed change.
In the above-mentioned steps 1, described pulverizer is provided with screen cloth, and the particle after pulverizing is screened, and pulverizer is pulverized and screening process can not again putting into by the particle of screen cloth again, and the particle by screen cloth is the waste and old polypropylene crushed material; Mesh diameter on the described screen cloth is 10mm.
In the above-mentioned steps 2, described repeatedly the stirring in stirrer refers to repeatedly stir three times, and each churning time is one hour.
In the above-mentioned steps 2, the rotating speed of described stirrer adopts 650～700 rev/mins; The inventor finds by research: if the stirrer rotating speed is too fast, material can cracking, if the stirrer rotating speed too slowly then can mix again inhomogeneously, is 650～700 rev/mins by the rotating speed of studying rear selection stirrer therefore.
In the above-mentioned steps 2, the rotating speed of twin screw extruder is 250～400 rev/mins.
In the above-mentioned steps 2, it is 190～230 ℃ that melting mixing adopts temperature; The inventor finds after deliberation: if the temperature of melting mixing is too low, then melting is bad, if temperature is too high, and material meeting cracking, therefore by selection after the research, the temperature of melting mixing is 190～230 ℃.
In the above-mentioned steps 2, the melt of being extruded by twin screw extruder is when tank cools off, and used tank temperature is 50～60 ℃; The inventor finds by research, the temperature of tank cooling herein also can have certain influence to product, if the tank temperature is excessively low, then the space is excessive and frangible between pellet, if the tank excess Temperature, then pellet easily bonds, therefore, after the tank temperature was optimized, it was 50～60 ℃ that the inventor selects the tank temperature for cold fuse-element.
Among the above-mentioned preparation method, the rotating speed of dicing machine is 600～900 rev/mins; The inventor finds by research, if the dicing machine rotating speed is excessively slow, then pellet can be too loose, if the dicing machine rotating speed is too fast, then pellet can be too little, and therefore, it is suitable that the rotating speed of dicing machine need to be adjusted, otherwise all can be to final pellet attractive in appearance influential; To this, the inventor is optimized adjustment to the rotating speed of dicing machine, and the rotating speed of finally selecting dicing machine is 600～900 rev/mins.
A kind of high-performance polypropylene alloy by the preparation of waste and old polypropylene material of the present invention is carried out performance test, found that this polypropylene alloy has the characteristics such as high-performance, damage resistant, low temperature resistant and good flame resistance, can be used for preparing electric fan housing, electric cooker housing, showing stand or nerf bar; Polypropylene alloy of the present invention can also be high temperature resistant 80 ℃ in addition, and low temperature resistant-40 ℃, and have fire prevention, the characteristics such as anti-aging, be work-ing life more than 20 years.
Compared with prior art, the present invention has following beneficial effect:
1. polypropylene alloy of the present invention, adopted the waste and old polypropylene reworked material to replace pp material in its raw material, in order to guarantee the excellent property of the finished product, the inventor is for the auxiliary agent that it is suitable that the characteristics of reworked material have been arranged in pairs or groups, and the consumption of each auxiliary agent is optimized, the selection of each auxiliary agent is so that polypropene recycled materials also can be prepared the polypropylene alloy of excellent property, realized environmental friendly regenerated resource recycling, that whole process is accomplished is energy-conservation, reduction of discharging, environmental friendly regenerated, the utilization of resources, for national save energy is contributed;
2. polypropylene alloy of the present invention has added BaSO in its composition of raw materials
4, and preferred industrial BaSO
4, BaSO
4Adding can greatly improve resistance to impact shock and the scratch resistant performance of system;
3. polypropylene alloy of the present invention, add the EPDM antioxidant in its composition of raw materials, thereby so that this polypropylene alloy material has solved the problems such as viscosity degradation, flexibility decrease and corrodibility of waste material well, casing for electric appliances, showing stand and nerf bar with polypropylene alloy material preparation of the present invention can be high temperature resistant 80 ℃, low temperature resistant-40 ℃;
4. polypropylene alloy of the present invention, by to the selection of each material component and the optimization of consumption thereof, and to the optimization of preparation method's medium speed and temperature, rigidity toughness is difficult to the shortcoming of balance in the current material so that the polypropylene alloy material that finally obtains efficiently solves, and has good damage resistant and fire-retardant advantage;
5. polypropylene alloy of the present invention reaches 12000kgf/cm at 23 ℃ of lower bending moduluss
2, notched Izod impact strength can reach 7kgcm/cm, and high temperature resistant 80 ℃, low temperature resistant-40 ℃ is very suitable casing for electric appliances material.
Embodiment
Come the present invention is done further elaboration below in conjunction with specific embodiment, but specific embodiment is not done any restriction to the present invention.
Embodiment 1
A kind of high-performance polypropylene alloy by the preparation of waste and old polypropylene material, its composition of raw materials is comprised of the each component of following parts by weight:
80 parts of waste electrical equipment Shell-Class polypropylene powder particles;
0.3 part of the long-acting thermo-stabilizer of B-215;
5 parts of EPDM;
BaSO
415 parts.
In the above-mentioned raw materials prescription, described waste and old polypropylene crushed material is that the particle diameter that will be obtained after pulverization process by the materials such as waste electrical equipment housing, waste and old showing stand or junked-auto safety lever of polypropylene preparation is less than or equal to the crushed material of 10mm; The described materials such as waste electrical equipment housing, waste and old showing stand or junked-auto safety lever by the polypropylene preparation refer to waste electrical equipment housing, waste and old showing stand or the junked-auto safety lever by the virgin pp manufacturing, and polypropylene content accounts for waste electrical equipment housing, waste and old showing stand or junked-auto safety lever that the material more than 95% is made.
In the above-mentioned raw materials prescription, the long-acting thermo-stabilizer of described B-215 and EPDM are the commercially available prod, described BaSO
4Be commercially available industrial products.
Above-mentioned a kind of high-performance polypropylene alloy by the preparation of waste and old polypropylene material, its preparation method comprises the steps:
The preparation of step 1. waste and old polypropylene crushed material
Collect the waste and old polypropylene material, use cuts machine the waste and old polypropylene material that length surpasses 600mm is cut, make and cut rear its length less than 600mm, the waste and old polypropylene material that again the waste and old polypropylene material after cutting and length is no more than 600mm is together sent on the pulverizer and is pulverized, obtaining granularity less than or equal to the particle of 10mm, then is required waste and old polypropylene crushed material;
Step 2. is according to waste and old polypropylene crushed material, B-215 long-acting thermo-stabilizer, EPDM and the BaSO of above-mentioned raw materials prescription with step 1 preparation
4Put in the vertical stainless steel round tube type stirrer and repeatedly stir three times; each churning time is one hour; the stirrer rotating speed is 700 rev/mins; sending into after mixing in the twin screw extruder, is 400 rev/mins at the rotating speed of twin screw extruder, and temperature is to carry out melting mixing under 220 ℃ the condition; after the gained melt is extruded by twin screw extruder; through the cooling of 60 ℃ of tanks, the dicing machine of introducing rotating speed again and be 600 rev/mins carries out the pelletizing operation, collects pellet and is the required polypropylene alloy of the present embodiment.
In the above-mentioned steps 1, the materials such as waste electrical equipment, waste and old showing stand and junked-auto safety lever that purchase comes are selected affirmation, select by the waste electrical equipment housing of virgin pp manufacturing, waste and old showing stand or junked-auto safety lever and by polypropylene content and account for waste electrical equipment housing, waste and old showing stand or the junked-auto safety lever that the material more than 95% is made, be the waste and old polypropylene material; Because the waste and old polypropylene material is all larger, so all above length 600mm's, to cut less than just advancing the pulverizer pulverizing below the 600mm by cutting machine, cutting acc power is 60kw, motor speed is 1400 rev/mins, by speed change scissors speed be 600 turn/hour, the waste and old polypropylene material that is no more than 600mm through the waste and old polypropylene material after cutting and length is together sent on the pulverizer and is pulverized; The power of described pulverizer is 22kw, and motor speed is 1400 rev/mins, makes the rotating speed of crushing knife become 700 rev/mins by transmitting speed change.
Adopt the ASTM international standard that a kind of high-performance polypropylene alloy by the preparation of waste and old polypropylene material that the present embodiment prepares is carried out performance test, the result is as shown in table 1.
The performance test results of the polypropylene alloy of table 1 embodiment 1
| Character | Method | Unit | Data |
| Proportion | ASTM D792 | — | 1.05 |
| Mould shrinks | ASTM D955 | % | 1.2 |
| Tensile strength | ASTM D638 | Kgf/c㎡ | 220 |
| Flexural strength | ASTM D790 | kgf/c㎡ | 380 |
| Unit elongation | ?ASTM D638 | % | 15 |
| Bending modulus | ASTM D790 | Kgf/c㎡ | 15000 |
| Notched Izod impact strength (1/8 ") (23 ℃) | ASTM D256 | Kg·㎝/㎝ | 7 |
| Notched Izod impact strength (1/8 ") (40 ℃) | ASTM D256 | Kg·㎝/㎝ | 6 |
| Heat-drawn wire | ASTM D648 | ℃ | 100 |
| Flame resistivity | UL94 | (1/8”) | HB |
| Drying temperature | — | ℃ | 80 |
| Time of drying | — | HR | 4 |
| Melt temperature | — | ℃ | 220 |
| Suggestion mould temperature | — | ℃ | 50 |
| Anti-stroke of intensity | — | — | 18N |
As can be seen from Table 1, its each performance index of the polypropylene alloy of the present embodiment all meet the requirement of preparation electric fan, electric cooker housing, showing stand and automobile insurance bar material, and its cold-resistant temperature can reach-40 ℃, high temperature resistantly reach 80 ℃.
Embodiment 2
A kind of high-performance polypropylene alloy by the preparation of waste and old polypropylene material, its composition of raw materials is comprised of the each component of following parts by weight:
60 parts of waste electrical equipment Shell-Class polypropylene powder particles;
0.4 part of the long-acting thermo-stabilizer of B-215;
10 parts of EPDM;
BaSO
430 parts.
In the above-mentioned raw materials prescription, described waste and old polypropylene crushed material is that the particle diameter that will be obtained after pulverization process by the materials such as waste electrical equipment housing, waste and old showing stand or junked-auto safety lever of polypropylene preparation is less than or equal to the crushed material of 10mm; The described materials such as waste electrical equipment housing, waste and old showing stand or junked-auto safety lever by the polypropylene preparation refer to waste electrical equipment housing, waste and old showing stand or the junked-auto safety lever by the virgin pp manufacturing, and polypropylene content accounts for waste electrical equipment housing, waste and old showing stand or junked-auto safety lever that the material more than 95% is made.
In the above-mentioned raw materials prescription, the long-acting thermo-stabilizer of described B-215 and EPDM are the commercially available prod, described BaSO
4Be commercially available industrial products.
Above-mentioned a kind of high-performance polypropylene alloy by the preparation of waste and old polypropylene material, its preparation method comprises the steps:
The preparation of step 1. waste and old polypropylene crushed material
Collect the waste and old polypropylene material, use cuts machine the waste and old polypropylene material that length surpasses 600mm is cut, make and cut rear its length less than 600mm, the waste and old polypropylene material that again the waste and old polypropylene material after cutting and length is no more than 600mm is together sent on the pulverizer and is pulverized, obtaining granularity less than or equal to the particle of 10mm, then is required waste and old polypropylene crushed material;
Step 2. is according to waste and old polypropylene crushed material, B-215 long-acting thermo-stabilizer, EPDM and the BaSO of above-mentioned raw materials prescription with step 1 preparation
4Put in the vertical stainless steel round tube type stirrer and repeatedly stir three times; each churning time is one hour; the stirrer rotating speed is 700 rev/mins; sending into after mixing in the twin screw extruder, is 400 rev/mins at the rotating speed of twin screw extruder, and temperature is to carry out melting mixing under 220 ℃ the condition; after the gained melt is extruded by twin screw extruder; through the cooling of 55 ℃ of tanks, the dicing machine of introducing rotating speed again and be 900 rev/mins carries out the pelletizing operation, collects pellet and is the required polypropylene alloy of the present embodiment.
In the above-mentioned steps 1, the materials such as waste electrical equipment, waste and old showing stand and junked-auto safety lever that purchase comes are selected affirmation, select by the waste electrical equipment housing of virgin pp manufacturing, waste and old showing stand or junked-auto safety lever and by polypropylene content and account for waste electrical equipment housing, waste and old showing stand or the junked-auto safety lever that the material more than 95% is made, be the waste and old polypropylene material; Because the waste and old polypropylene material is all larger, so all above length 600mm's, to cut less than just advancing the pulverizer pulverizing below the 600mm by cutting machine, cutting acc power is 60kw, motor speed is 1400 rev/mins, by speed change scissors speed be 600 turn/hour, the waste and old polypropylene material that is no more than 600mm through the waste and old polypropylene material after cutting and length is together sent on the pulverizer and is pulverized; The power of described pulverizer is 22kw, and motor speed is 1400 rev/mins, makes the rotating speed of crushing knife become 700 rev/mins by transmitting speed change.
Adopt the ASTM international standard that a kind of high-performance polypropylene alloy by the preparation of waste and old polypropylene material that the present embodiment prepares is carried out performance test, the result is as shown in table 2.
The performance test results of the polypropylene alloy of table 2 embodiment 2
| Character | Method | Unit | Data |
| Proportion | ASTM D792 | — | 1.08 |
| Mould shrinks | ASTM D955 | % | 1.5 |
| Tensile strength | ASTM D638 | Kgf/c㎡ | 240 |
| Flexural strength | ASTM D790 | kgf/c㎡ | 360 |
| Unit elongation | ?ASTM D638 | % | 15 |
| Bending modulus | ASTM D790 | Kgf/c㎡ | 12000 |
| Notched Izod impact strength (1/8 ") (23 ℃) | ASTM D256 | Kg·㎝/㎝ | 7 |
| Notched Izod impact strength (1/8 ") (40 ℃) | ASTM D256 | Kg·㎝/㎝ | 6 |
| Heat-drawn wire | ASTM D648 | ℃ | 100 |
| Flame resistivity | UL94 | (1/8”) | HB |
| Drying temperature | — | ℃ | 80 |
| Time of drying | — | HR | 4 |
| Melt temperature | — | ℃ | 220 |
| Anti-stroke of grade | — | — | 20N |
As can be seen from Table 2, its each performance index of the polypropylene alloy of the present embodiment all meet the requirement of preparation electric fan, electric cooker housing, showing stand and automobile insurance bar material, and its cold-resistant temperature can reach-40 ℃, high temperature resistantly reach 80 ℃.
Claims (8)
1. high-performance polypropylene alloy by waste and old polypropylene material preparation, its composition of raw materials is comprised of the each component of following parts by weight:
60～85 parts of waste electrical equipment Shell-Class polypropylene powder particles;
0.2～0.4 part of the long-acting thermo-stabilizer of B-215;
5～10 parts of EPDM;
BaSO
410～30 parts;
Above-mentioned waste and old polypropylene crushed material is that the particle diameter that will be obtained after pulverization process by waste electrical equipment housing, waste and old showing stand or the junked-auto safety lever of polypropylene preparation is less than or equal to the crushed material of 10mm.
2. the preparation method of the described a kind of high-performance polypropylene alloy by the preparation of waste and old polypropylene material of a claim 1, it specifically comprises the steps:
The preparation of step 1. waste and old polypropylene crushed material
Collect the waste and old polypropylene material, use cuts machine the waste and old polypropylene material that length surpasses 600mm is cut, make and cut rear its length less than 600mm, the waste and old polypropylene material that again the waste and old polypropylene material after cutting and length is no more than 600mm is together sent on the pulverizer and is pulverized, obtaining granularity less than or equal to the particle of 10mm, then is required waste and old polypropylene crushed material;
Step 2. is according to waste and old polypropylene crushed material, B-215 long-acting thermo-stabilizer, EPDM and the BaSO of above-mentioned raw materials prescription with step 1 preparation
4Send in the twin screw extruder after repeatedly mixing in the threading stirrer; carry out melting mixing under 190～230 ℃ temperature, the gained melt cools off through tank after being extruded by twin screw extruder; introduce dicing machine and carry out the pelletizing operation, collect pellet and be polypropylene alloy.
3. the preparation method of described a kind of high-performance polypropylene alloy by waste and old polypropylene material preparation according to claim 2 is characterized in that in the described step 2, repeatedly stirs to refer to repeatedly stir three times in stirrer, and each churning time is one hour.
4. the preparation method of described a kind of high-performance polypropylene alloy by waste and old polypropylene material preparation according to claim 2 is characterized in that in the described step 2, and the rotating speed of stirrer adopts 650～700 rev/mins.
5. the preparation method of described a kind of high-performance polypropylene alloy by waste and old polypropylene material preparation according to claim 2 is characterized in that in the described step 2, and the rotating speed of twin screw extruder is 250～400 rev/mins.
6. the preparation method of described a kind of high-performance polypropylene alloy by waste and old polypropylene material preparation according to claim 2 is characterized in that in the described step 2, and the melt of being extruded by twin screw extruder is when tank cools off, and used tank temperature is 50～60 ℃.
7. the preparation method of described a kind of high-performance polypropylene alloy by waste and old polypropylene material preparation according to claim 2 is characterized in that in the described step 2, and the rotating speed of dicing machine is 600～900 rev/mins.
8. the described a kind of application of high-performance polypropylene alloy in preparation electric fan housing, electric cooker housing, showing stand or nerf bar by the preparation of waste and old polypropylene material of claim 1.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103627083A (en) * | 2013-11-12 | 2014-03-12 | 青岛广联达精密机械有限公司 | Modified PP (Polypropylene) alloy material |
| CN105837948A (en) * | 2016-06-21 | 2016-08-10 | 惠安县威科电子科技有限公司 | Automotive interior decorative plate prepared by utilizing waste polypropylene material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1157298A (en) * | 1996-02-12 | 1997-08-20 | 中国科学院化学研究所 | Polypropylene composition modified by using barium sulfate as filler |
| CN101376683A (en) * | 2008-10-07 | 2009-03-04 | 中国科学院长春应用化学研究所 | Preparation of high melt strength polypropylene |
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2012
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1157298A (en) * | 1996-02-12 | 1997-08-20 | 中国科学院化学研究所 | Polypropylene composition modified by using barium sulfate as filler |
| CN101376683A (en) * | 2008-10-07 | 2009-03-04 | 中国科学院长春应用化学研究所 | Preparation of high melt strength polypropylene |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103627083A (en) * | 2013-11-12 | 2014-03-12 | 青岛广联达精密机械有限公司 | Modified PP (Polypropylene) alloy material |
| CN105837948A (en) * | 2016-06-21 | 2016-08-10 | 惠安县威科电子科技有限公司 | Automotive interior decorative plate prepared by utilizing waste polypropylene material |
| CN105837948B (en) * | 2016-06-21 | 2018-02-06 | 惠安集睿信息科技有限公司 | A kind of automotive interior trim sheet material prepared using waste and old polypropylene material |
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