CN112659503A - Intelligent novel modified injection molding process for high-strength large garbage can - Google Patents
Intelligent novel modified injection molding process for high-strength large garbage can Download PDFInfo
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- CN112659503A CN112659503A CN202011571356.2A CN202011571356A CN112659503A CN 112659503 A CN112659503 A CN 112659503A CN 202011571356 A CN202011571356 A CN 202011571356A CN 112659503 A CN112659503 A CN 112659503A
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 72
- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 52
- 238000002156 mixing Methods 0.000 claims abstract description 20
- 239000004033 plastic Substances 0.000 claims abstract description 20
- 229920003023 plastic Polymers 0.000 claims abstract description 20
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 19
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 19
- 239000003365 glass fiber Substances 0.000 claims abstract description 19
- 239000000203 mixture Substances 0.000 claims abstract description 18
- 239000002245 particle Substances 0.000 claims abstract description 16
- 238000001035 drying Methods 0.000 claims description 29
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- FPCJKVGGYOAWIZ-UHFFFAOYSA-N butan-1-ol;titanium Chemical compound [Ti].CCCCO.CCCCO.CCCCO.CCCCO FPCJKVGGYOAWIZ-UHFFFAOYSA-N 0.000 claims description 6
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 2
- 238000004381 surface treatment Methods 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims 2
- 239000007924 injection Substances 0.000 claims 2
- 239000012745 toughening agent Substances 0.000 abstract description 10
- 239000002994 raw material Substances 0.000 abstract description 5
- 230000003313 weakening effect Effects 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 239000004743 Polypropylene Substances 0.000 description 33
- 229920006124 polyolefin elastomer Polymers 0.000 description 17
- 238000001914 filtration Methods 0.000 description 5
- 238000002791 soaking Methods 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention discloses an intelligent novel modified injection molding process for a high-strength large garbage can, which comprises the following steps: 1. uniformly mixing the PP new material and the PP reclaimed material in a high-speed mixer, and extruding and granulating to obtain plastic particles A; 2. POE and nano CaCO3Uniformly mixing the mixture in a high-speed mixer, blending the mixture with the plastic particles A, and extruding and granulating the mixture to obtain modified plastic particles B; 3. and (3) placing the modified plastic particles B in a main material cylinder of the screw injection molding machine, placing the glass fibers in a side material cylinder at the middle section of the screw, and performing injection molding. The invention provides an intelligent high-strength large-scale garbage canThe novel modified injection molding process is convenient to implement, and POE and nano C are modifiedaCO3The formed toughening agent is used for modifying and toughening the recycled PP, and the alkali-free glass fiber is added into the raw materials to reinforce the whole material, so that the mechanical property weakening caused by recycling the PP material is compensated and strengthened, the resource waste is reduced, and the environment is protected.
Description
Technical Field
The invention belongs to the field of modified injection molding manufacturing, and particularly relates to an intelligent novel modified injection molding process for a high-strength large garbage can.
Background
The large-scale garbage bin raw materials of moulding plastics generally chooses for use high density polyethylene HDPE or polypropylene PP, can not only adapt to various service environment, for example acid and alkali-resistance can adapt to outdoor environment, and there is certain shock resistance, can withstand the collision, promote to fall etc., it is sturdy and durable, but also have easy ageing, the environmental pollution problem after the abandonment that difficult degradation arouses, along with the plastics article is full in each corner of life, recycle becomes the problem that needs to solve urgently, the recovery of plastics has become the universal phenomenon, because through once high temperature ageing, and the impurity that exists in the raw materials, make the mechanical properties that the secondary was moulded plastics reduce, modification process to plastics recovery is in studying always, increasing toughness, enlarge the surface energy of plastics and toughening agent, and the ration is added the ratio and needs to be improved in continuous test.
The invention aims to provide an intelligent novel modified injection molding process for a high-strength large garbage can, so as to solve the problems in the background technology.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects, the invention aims to provide an intelligent novel modified injection molding process for a high-strength large garbage can, which is convenient to implement and is used for modifying POE (polyolefin elastomer) and nano C (carbon dioxide)aCO3The formed toughening agent is used for modifying and toughening the recycled PP, and the alkali-free glass fiber is added into the raw materials to reinforce the whole material, so that the mechanical property weakening caused by recycling the PP material is compensated and strengthened, the resource waste is reduced, and the environment is protected.
In order to achieve the purpose, the invention provides an intelligent novel modified injection molding process for a high-strength large garbage can, which comprises the following steps:
1) uniformly mixing the PP new material and the PP reclaimed material in a high-speed mixer, and extruding and granulating to obtain plastic particles A;
2) POE and nano CaCO3Uniformly mixing the mixture in a high-speed mixer, blending the mixture with the plastic particles A, and extruding and granulating the mixture to obtain modified plastic particles B;
3) and (3) placing the modified plastic particles B in a main material cylinder of the screw injection molding machine, placing the glass fibers in a side material cylinder at the middle section of the screw, and performing injection molding.
The plastic particles and the toughening agent are respectively mixed and then mixed again, so that the uniformity is improved, the toughening agent is used for filling up gaps of the PP reclaimed material caused by impurities, the intermolecular strength is improved, the glass fiber is added in a side feeding mode, the alkali metal element is introduced, and the material strength is further improved.
Further, according to the intelligent novel modified injection molding process for the high-strength large garbage can, the mass ratio of the PP new material to the PP recycled material is 7:2-8:1, and the POE and the nano C areaCO3The mass of the glass fiber is 40-50% of the mass of the PP reclaimed material, the mass of the glass fiber is 8-15% of the mass of the plastic particle A, and the PP reclaimed material, POE and nano C are usedaCO3Determine the correlation between POE and C as toughening agentaCO3The addition amount of the feed is measured by a direct measurement method, so that the feeding quality is controlled automatically and intelligently.
Further, the intelligent novel modified injection molding process for the high-strength large-sized garbage can comprises POE and nano CaCO3The mass ratio of (1: 1) is that POE is irregular elastic particles with uneven sizes in the blending process and can be distributed in gaps of PP molecules to make up for the defects caused by impurities, and the nano CaCO3And a wrapping structure is formed with POE, so that the debonding of the toughening agent and PP molecules is avoided, the toughness of the material is further improved, and the use amounts of the toughening agent and the PP molecules are directly related.
Further, in the intelligent novel modified injection molding process for the high-strength large-sized garbage can, in the step 1 and the step 2, the PP reclaimed material and the nanometer C are adoptedaCO3Before mixing in a high-speed mixer, drying in a drying box at 80 ℃ for 2 hours to remove water in the materials.
Furthermore, the novel intelligent modified injection molding process for the high-strength large garbage can is characterized in that the nano CaCO3Soaking the dried nano C in 2 percent butyl titanate alcohol solution, stirring, filtering and drying in a drying box at the temperature of 80 ℃ for 24 hours to obtain nano CaCO3And surface modification is carried out, so that bonding and combination with POE are facilitated.
Further, in the intelligent novel modified injection molding process for the high-strength large-sized garbage can, in the step 2, the POE is modified by maleic anhydride.
Furthermore, according to the intelligent novel modified injection molding process for the high-strength large garbage can, the glass fiber is alkali-free glass fiber and is subjected to surface treatment by using the silane coupling agent.
Further, in the intelligent novel modified injection molding process for the high-strength large garbage can, the injection molding parameters in the step 3 are set to be the injection molding temperature of 200-220 ℃, the injection molding pressure of 60-80MPa, the pressure maintaining time of 35-50 seconds and the pressure maintaining pressure of 50-60 MPa.
Further, the intelligent novel modified injection molding process for the high-strength large garbage can is characterized in that the injection molding parameters in the step 3 are set to be injection molding temperature of 200 ℃, injection molding pressure is 70MPa, pressure maintaining time is 40 seconds, and the pressure maintaining pressure is 55 MPa.
Compared with the prior art, the invention has the beneficial effects that:
1. the intelligent novel modified injection molding process for the high-strength large garbage can is realized by modifying POE and nano CaCO3The formed toughening agent is used for modifying and toughening the recycled PP, and the alkali-free glass fiber is added into the raw materials to reinforce the whole material, so that the weakening of mechanical properties caused by the recycled PP material is compensated and strengthened.
2. The intelligent novel modified injection molding process for the high-strength large garbage can is characterized in that the surface of the intelligent novel modified injection molding process is modified by the nano CaCO3And the POE forms a wrapping type filling structure, so that the interface combination type is improved, and the debonding of the toughening agent and the PP molecules is avoided.
3. According to the intelligent novel modified injection molding process for the high-strength large garbage can, the influence of injection molding on the mechanical property of the material is reduced by determining the optimal injection molding process parameters.
Detailed Description
The invention will be further elucidated with reference to the following specific examples.
Example one
Mixing 40 g of nano CaCO3Respectively drying the reclaimed PP material and 180 g of reclaimed PP material in a drying box at the temperature of 80 ℃ for 2 hours;
mixing the aboveOven dried nano CaCO3Soaking in 2% butyl titanate alcohol solution, stirring, filtering, drying in a drying oven at 80 ℃ for 24 hours, adding 40 g of POE modified by maleic anhydride, and uniformly mixing in a high-speed mixer;
adding 180 g of dried PP reclaimed material and 1.5 kg of PP new material into the mixture, drying, and placing the mixture into a main material barrel of a screw injection molding machine;
adding 160 g of glass fiber into a side charging barrel at the middle section of a screw injection molding machine for injection molding, wherein the injection molding parameters are injection molding temperature of 200 ℃, injection molding pressure of 70MPa, pressure maintaining time of 40 seconds and pressure maintaining pressure of 55 MPa;
the resulting injection-molded parts were measured for tensile strength and impact strength according to GB/T1040-1992, GB/T9341-2000, respectively;
the results were: tensile strength of 62.6MPa and impact toughness of 28.6KJ/m2。
Example two
70 g of nano CaCO3Respectively drying the recycled PP material and 320 g of recycled PP material in a drying box at the temperature of 80 ℃ for 2 hours;
drying the above dried nanometer CaCO3Soaking in 2% butyl titanate alcohol solution, stirring, filtering, drying in a drying oven at 80 ℃ for 24 hours, adding 70 g of POE modified by maleic anhydride, and uniformly mixing in a high-speed mixer;
adding the dried 320 g of PP reclaimed material and 1.5 kg of PP new material into the mixture, drying, and placing the mixture into a main material barrel of a screw injection molding machine;
adding 250 g of glass fiber into a side material cylinder at the middle section of a screw injection molding machine for injection molding, wherein the injection molding parameters are injection molding temperature of 200 ℃, injection molding pressure of 70MPa, pressure maintaining time of 40 seconds and pressure maintaining pressure of 55 MPa;
the resulting injection-molded parts were measured for tensile strength and impact strength according to GB/T1040-1992, GB/T9341-2000, respectively;
the results were: tensile strength of 54.3MPa and impact toughness of 21.4KJ/m2。
EXAMPLE III
Mixing 40 g of nano CaCO3With 180 g of PP recyclate respectivelyDrying in a drying box at the temperature of 80 ℃ for 2 hours;
drying the above dried nanometer CaCO3Soaking in 2% butyl titanate alcohol solution, stirring, filtering, drying in a drying oven at 80 ℃ for 24 hours, adding 40 g of POE modified by maleic anhydride, and uniformly mixing in a high-speed mixer;
adding 180 g of dried PP reclaimed material and 1.5 kg of PP new material into the mixture, drying, and placing the mixture into a main material barrel of a screw injection molding machine;
adding 160 g of glass fiber into a side charging barrel at the middle section of a screw injection molding machine for injection molding, wherein the injection molding parameters are injection molding temperature of 220 ℃, injection molding pressure of 75MPa, pressure maintaining time of 50 seconds and pressure maintaining pressure of 55 MPa;
the resulting injection-molded parts were measured for tensile strength and impact strength according to GB/T1040-1992, GB/T9341-2000, respectively;
the results were: tensile strength of 60.1MPa and impact toughness of 25.6KJ/m2。
Example four
Mixing 40 g of nano CaCO3Respectively drying the reclaimed PP material and 180 g of reclaimed PP material in a drying box at the temperature of 80 ℃ for 2 hours;
drying the above dried nanometer CaCO3Soaking in 2% butyl titanate alcohol solution, stirring, filtering, drying in a drying oven at 80 ℃ for 24 hours, adding 40 g of POE modified by maleic anhydride, and uniformly mixing in a high-speed mixer;
adding 180 g of dried PP reclaimed material and 1.5 kg of PP new material into the mixture, drying, and placing the mixture into a main material barrel of a screw injection molding machine;
adding 160 g of glass fiber into a side material cylinder at the middle section of a screw injection molding machine for injection molding, wherein the injection molding parameters are injection molding temperature of 200 ℃, injection molding pressure of 60MPa, pressure maintaining time of 35 seconds and pressure maintaining pressure of 50 MPa;
the resulting injection-molded parts were measured for tensile strength and impact strength according to GB/T1040-1992, GB/T9341-2000, respectively;
the results were: the tensile strength is 60.9MPa, and the impact toughness is 26.6KJ/m2。
Proved by a large number of experimental results, the tensile strength is more than 52.5MPa, and the impact toughness is 21.2KJ/m2Above, the maximum tensile strength is more than 39.1MPa and the impact toughness is 9.9KJ/m without toughening modification2。
The above-described embodiments should not be construed as limiting the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc., which are within the spirit and principle of the present invention, should be included in the scope of the present invention by those skilled in the art, and those not described in detail in the present specification are known in the art.
Claims (9)
1. The utility model provides a novel intelligent modified injection moulding process for large-scale garbage bin of high strength which characterized in that: the method comprises the following steps:
1) uniformly mixing the PP new material and the PP reclaimed material in a high-speed mixer, and extruding and granulating to obtain plastic particles A;
2) POE and nano CaCO3Uniformly mixing the mixture in a high-speed mixer, blending the mixture with the plastic particles A, and extruding and granulating the mixture to obtain modified plastic particles B;
3) and (3) placing the modified plastic particles B in a main material cylinder of the screw injection molding machine, placing the glass fibers in a side material cylinder at the middle section of the screw, and performing injection molding.
2. The intelligent novel modified injection molding process for the large-sized high-strength trash can according to claim 1, characterized in that: the mass ratio of the new PP material to the recovered PP material is 7:2-8:1, and the POE and the nano C areaCO3The mass of the glass fiber is 40-50% of the mass of the PP recycled material, and the mass of the glass fiber is 8-15% of the mass of the plastic particle A.
3. The intelligent novel modified injection molding process for the large-sized high-strength trash can according to claim 2, characterized in that: the POE and the nano CaCO3The mass ratio of (A) to (B) is 1: 1.
4. The method of claim 1 for highIntelligent novel modified injection molding process of large-scale garbage bin of intensity, its characterized in that: PP reclaimed material and nano C in the step 1 and the step 2aCO3Before mixing in a high-speed mixer, drying in a drying box at 80 ℃ for 2 hours.
5. The intelligent novel modified injection molding process for the large-sized high-strength trash can according to claim 1, characterized in that: the nano CaCO3After being dried, the mixture is soaked in 2 percent butyl titanate alcohol solution to be stirred, filtered and dried in a drying oven at the temperature of 80 ℃ for 24 hours.
6. The intelligent novel modified injection molding process for the large-sized high-strength trash can according to claim 1, characterized in that: and in the step 2, modifying POE by maleic anhydride.
7. The intelligent novel modified injection molding process for the large-sized high-strength trash can according to claim 1, characterized in that: the glass fiber is alkali-free glass fiber and is subjected to surface treatment by a silane coupling agent.
8. The intelligent novel modified injection molding process for the large-sized high-strength trash can according to claim 1, characterized in that: the parameters of injection molding in the step 3 are set as an injection temperature of 200-220 ℃, an injection pressure of 60-80MPa, a pressure holding time of 35-50 seconds and a pressure holding pressure of 50-60 MPa.
9. The intelligent novel modified injection molding process for the large-sized high-strength trash can according to claim 7, characterized in that: and 3, setting the injection molding parameters in the step 3 to be injection molding temperature of 200 ℃, injection molding pressure of 70MPa, pressure maintaining time of 40 seconds and pressure maintaining pressure of 55 MPa.
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| CN202011571356.2A CN112659503A (en) | 2020-12-27 | 2020-12-27 | Intelligent novel modified injection molding process for high-strength large garbage can |
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| CN202011571356.2A CN112659503A (en) | 2020-12-27 | 2020-12-27 | Intelligent novel modified injection molding process for high-strength large garbage can |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116376161A (en) * | 2023-04-12 | 2023-07-04 | 湖南映宏新材料股份有限公司 | Medical infusion bag modified recycling material and preparation method thereof |
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| CN106317637A (en) * | 2016-10-08 | 2017-01-11 | 柳州增程材料科技有限公司 | Preparation method of polypropylene enhanced and toughened composite material |
| CN106432915A (en) * | 2016-10-08 | 2017-02-22 | 柳州增程材料科技有限公司 | Processing technology of reinforced and toughened polypropylene material |
| CN106566086A (en) * | 2016-11-07 | 2017-04-19 | 惠州航创密封件有限公司 | PP modified material and preparation method thereof |
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2020
- 2020-12-27 CN CN202011571356.2A patent/CN112659503A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101284924A (en) * | 2008-05-27 | 2008-10-15 | 南京航空航天大学 | Toughening method for reclaiming PP |
| CN104861284A (en) * | 2015-03-31 | 2015-08-26 | 苏州市鼎立包装有限公司 | Pass box prepared from recycled and modified waste PP plastic shells of household appliances and preparation method thereof |
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