CN107652515A - The recycled plastic granules and its renovation process produced using waste polyethylene - Google Patents
The recycled plastic granules and its renovation process produced using waste polyethylene Download PDFInfo
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- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
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- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
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- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
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- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/08—Copolymers of ethene
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
The invention discloses a kind of recycled plastic granules and its renovation process produced using waste polyethylene.Methods described is first crushed waste polyethylene, cleaning, dehydration and drying, obtain waste polyethylene raw material, 1.5% 4% antioxidant by waste polyethylene raw material and quality for waste polyethylene raw material again, quality for waste polyethylene raw material 0.1% 3% UV resistant agent mixed at high speed at room temperature, well mixed material is through Co rotating Twin Screw Extrusion, tie rod, pelletizing, vacuum drying obtains matrix masterbatch, last weight percent, by waste polyethylene raw material 80~92%, matrix masterbatch 1.5~3%, elastomer 1~5%, metallocene PE 1~5% and Tissuemat E 3~8.5% mixed at high speed at room temperature, well mixed material is granulated through Co rotating Twin Screw Extrusion, the polyethylene regeneration particle best in quality for meeting the requirement of plastic products standard is made.
Description
Technical field
The invention discloses a kind of recycled plastic granules and its renovation process produced using waste polyethylene, belong to material
Expect processing technique field.
Background technology
With China's natural gas, oil long-distance transport pipes, city gas pipe network, multi-product pipeline network newly-built and old pipeline more
Newly, the usage amount of three-layer polyethylene (PE) outer anti-corrosion pipeline gradually increases.The outer anti-corrosion of pipeline can produce largely in process of production
Waste polyethylene, discarded polyethylene is difficult to degrade in natural environment, can only be by burning, burying or reheating modeling
Change pelletizing to be used.But during burning, can produce that polycyclic aromatic hydrocarbon etc. is carcinogenic or mutagens material, environment is caused greatly
Harm.When burying processing, the infiltration of the difficult degradation and auxiliary agent of plastics to soil, a large amount of soils and contaminated land can be not only taken,
And occupied soil cannot recover for a long time, the sustainable use in soil is influenceed.Using conventional method to waste polyethylene
Regenerated, heating plasticizing pelletizing is carried out to the waste polyethylene cleaned using two sets of single screw extrusion machines, is heated not
Uniformly so that polyethylene macromolecular chain produces depolymerization phenomenon, destroys the mechanical performance of polyethylene, obtained product quality significantly
It is inferior.
Production equipment that existing pipeline corrosion protection waste polyethylene regeneration techniques uses is simple, technique is single.Patent application
201010538775.6 disclose a kind of method that recycled plastic granules are produced using waste plastics, by the way that plastics progress chemistry is washed
Simple traction is directly carried out after washing to be granulated, and so as to accelerate the aging of polyethylene and carbonization, causes original modified additive to consume
More, material loss is big, while cleaning solution waste water produces secondary pollution to environment.
The content of the invention
It is an object of the invention to provide a kind of pollution-free, without discharge regenerated plastics produced using waste polyethylene
Grain and its renovation process.
Realize that the technical scheme of the object of the invention is as follows：
The recycled plastic granules produced using waste polyethylene, weight percent, including waste polyethylene raw material 80~
92%, matrix masterbatch 1.5~3%, elastomer 1~5%, metallocene PE 1~5%, Tissuemat E 3~8.5% is described
Matrix masterbatch, using waste polyethylene raw material as 100%, including following component：Matrix resin：Waste polyethylene raw material 100%, resist
Oxygen agent：Primary antioxidant Hinered phenols antioxidant 1010:1%-3%, auxiliary antioxidant phosphite antioxidants 168：0.5%-
2%, UV resistant agent：Ultra-violet absorber UV531,0.1%-2%.
Using the method for waste polyethylene production recycled plastic granules, comprise the following steps：
Step 1, the pipeline corrosion protection waste polyethylene of screening crushed, cleaned, dehydration, drying obtains waste polyethylene original
Material, it is waste polyethylene by 1.5%-4% that waste polyethylene raw material and quality are waste polyethylene raw material antioxidant, quality
The 0.1%-3% of raw material UV resistant agent is with 150-200r/min rotating speed, and mixed at high speed 6-8min, equal by mixing at room temperature
Even material is through Co rotating Twin Screw Extrusion, and extrusion temperature is 180-200 DEG C, screw speed 140-160r/min, tie rod, water
Cold, air knife drying, pelletizing, vacuum drying acquisition matrix masterbatch, described antioxidant is by primary antioxidant Hinered phenols antioxidant
1010 and auxiliary antioxidant phosphite antioxidants 168 form, described UV resistant agent is ultra-violet absorber UV531；
Step 2, weight percent, by waste polyethylene raw material 80~92%, matrix masterbatch 1.5~3%, elastomer 1
~5%, metallocene PE 1~5%, Tissuemat E 3~8.5%, with 260-300r/min rotating speed, mixed at high speed at room temperature
2-6min, by well mixed material through Co rotating Twin Screw Extrusion, extrusion temperature is 180-200 DEG C, screw speed 120-
140r/min, extruding pelletization, obtain polyethylene regeneration particle.
Preferably, in step 1, described matrix masterbatch, using waste polyethylene raw material as 100%, including following component：Base
Body resin：Waste polyethylene raw material 100%, antioxidant：Primary antioxidant Hinered phenols antioxidant 1010:1%-3%, aid in antioxygen
Agent phosphite antioxidants 168：0.5%-2%, UV resistant agent：Ultra-violet absorber UV531,0.1%-2%.
Preferably, in step 2, described elastomer is selected from ethylene-vinyl acetate copolymer (EVA) and ethylene-octene is total to
The one or two of polymers (POE).
Compared with prior art, the present invention has advantages below：
(1) antioxidant, the utilization rate of UV resistant agent are high in the inventive method, and obtained polyethylene regeneration particle has good
Good resistance to ag(e)ing；
(2) Tissuemat E plays lubrication in the inventive method, adds elastomer and metallocene PE, obtained poly- second
Alkene regeneration particle possesses good mechanical property and environmental stress crack resistance.
Embodiment
With reference to embodiment, the invention will be further described.
Embodiment 1
Step 1, the pipeline corrosion protection waste polyethylene of screening crushed, cleaned, dehydration, dried 1h at 80 DEG C, discarded
Polyethylene raw material, by the 1% primary antioxidant Hinered phenols antioxidant that waste polyethylene raw material and quality are waste polyethylene raw material
1010, quality is 0.5% auxiliary antioxidant phosphite antioxidants 168 of waste polyethylene raw material, and quality is to discard poly- second
The ultra-violet absorber UV531 of the 0.1% of alkene raw material is placed in high-speed mixer, and it is 150r/min to control rotating speed, high at room temperature
Speed mixing 8min, well mixed material is set as 180 DEG C through unidirectional double screw extruder (MT-36 types), extrusion, extrusion temperature,
Screw speed is 140r/min, tie rod, water cooling, air knife drying, pelletizing, is dried in vacuo and obtains matrix masterbatch.
Step 2, weight percent, by waste polyethylene raw material 90%, matrix masterbatch 3%, EVA 2%, metallocene gathers
Ethene 1%, Tissuemat E 4%, is placed in high-speed mixer, and it is 260r/min to control rotating speed, at room temperature mixed at high speed 6min, will
Well mixed material is 180 DEG C through unidirectional double screw extruder (MT-36 types), extrusion, extrusion temperature, screw speed 140r/
Min, extruding pelletization, obtain polyethylene regeneration particle.
Obtained polyethylene regeneration particulates' properties testing result is as follows：
Density (g/cm3)：0.946；Melt flow rate (MFR) (190 DEG C, 2.16Kg)/(g/10min)：0.2；Carbon black contains
Amount/%：2.1；Moisture content/%：0.02；Oxidation induction period (220 DEG C)/min：35；Heat-proof aging (100 DEG C, 2400h) %：≤
35；Tensile strength/Mpa：22；Elongation at break/%：720；Vicat softening point/DEG C：112；Brittle temperature/DEG C：≤-65；Resistance to ring
Border stress cracking (F50)/h：≥1000；Identation hardness/mm (23 DEG C)：≤0.2.
Embodiment 2
Step 1, the pipeline corrosion protection waste polyethylene of screening crushed, cleaned, dehydration, dried 1h at 80 DEG C, discarded
Polyethylene raw material, by the 3% primary antioxidant Hinered phenols antioxidant that waste polyethylene raw material and quality are waste polyethylene raw material
1010, quality is 1% auxiliary antioxidant phosphite antioxidants 168 of waste polyethylene raw material, and quality is waste polyethylene
The ultra-violet absorber UV531 of the 2% of raw material is placed in high-speed mixer, and it is 200r/min to control rotating speed, mixed at a high speed at room temperature
6min is closed, well mixed material is set as 200 DEG C through unidirectional double screw extruder (MT-36 types), extrusion, extrusion temperature, screw rod
Rotating speed is 140r/min, tie rod, water cooling, air knife drying, pelletizing, is dried in vacuo and obtains matrix masterbatch.
Step 2, weight percent, by waste polyethylene raw material：80%, matrix masterbatch：1.5%, EVA：2%, POE：
3%, metallocene PE：5%, Tissuemat E：8.5%, it is placed in high-speed mixer, it is 300r/min to control rotating speed, room temperature
Lower mixed at high speed 2min, through unidirectional double screw extruder (MT-36 types), extrusion, extrusion temperature it is 200 DEG C by well mixed material,
Screw speed is 120r/min, extruding pelletization, obtains polyethylene regeneration particle.
Obtained polyethylene regeneration particulates' properties testing result is as follows：Density (g/cm3)：0.940；Melt flow rate (MFR)
(190 DEG C, 2.16Kg)/(g/10min)：0.3；Carbon black content/%：2.2；Moisture content/%：0.03；Oxidation induction period (220
℃)/min：34；Heat-proof aging (100 DEG C, 2400h) %：≤35；Tensile strength/Mpa：26；Elongation at break/%：860；Dimension
Card softening point/DEG C：110；Brittle temperature/DEG C：≤-65；Resisting environmental stress and cracking (F50)/h：≥1000；Identation hardness/mm (23
℃)：≤0.2.
Embodiment 3
Step 1, the pipeline corrosion protection waste polyethylene of screening crushed, cleaned, dehydration, dried 1h at 80 DEG C, discarded
Polyethylene raw material, by the 2% primary antioxidant Hinered phenols antioxidant that waste polyethylene raw material and quality are waste polyethylene raw material
1010, quality is 2% auxiliary antioxidant phosphite antioxidants 168 of waste polyethylene raw material, and quality is waste polyethylene
The ultra-violet absorber UV531 of the 3% of raw material is placed in high-speed mixer, and it is 180r/min to control rotating speed, mixed at a high speed at room temperature
6min is closed, well mixed material is set as 200 DEG C through unidirectional double screw extruder (MT-36 types), extrusion, extrusion temperature, screw rod
Rotating speed is 160r/min, tie rod, water cooling, air knife drying, pelletizing, is dried in vacuo and obtains matrix masterbatch.
Step 2, weight percent, by waste polyethylene raw material 85%, matrix masterbatch 2%, POE 4%, metallocene gathers
Ethene 1%, Tissuemat E 8%, is placed in high-speed mixer, and it is 300r/min to control rotating speed, at room temperature mixed at high speed 4min, will
Well mixed material is 200 DEG C through unidirectional double screw extruder (MT-36 types), extrusion, extrusion temperature, screw speed 140r/
Min, extruding pelletization, obtain polyethylene regeneration particle.
Obtained polyethylene regeneration particulates' properties testing result is as follows：Density (g/cm3)：0.950；Melt flow rate (MFR)
(190 DEG C, 2.16Kg)/(g/10min)：0.3；Carbon black content/%：2.3；Moisture content/%：0.03；Oxidation induction period (220
℃)/min：35；Heat-proof aging (100 DEG C, 2400h) %：≤35；Tensile strength/Mpa：21；Elongation at break/%：760；Dimension
Card softening point/DEG C：114；Brittle temperature/DEG C：≤-65；Resisting environmental stress and cracking (F50)/h：≥1000；Identation hardness/mm (23
℃)：≤0.2.
Embodiment 4
Step 1, the pipeline corrosion protection waste polyethylene of screening crushed, cleaned, dehydration, dried 1h at 80 DEG C, discarded
Polyethylene raw material, by the 1% primary antioxidant Hinered phenols antioxidant that waste polyethylene raw material and quality are waste polyethylene raw material
1010, quality is 0.5% auxiliary antioxidant phosphite antioxidants 168 of waste polyethylene raw material, and quality is to discard poly- second
The ultra-violet absorber UV531 of the 0.1% of alkene raw material is placed in high-speed mixer, and it is 200r/min to control rotating speed, high at room temperature
Speed mixing 8min, well mixed material is set as 200 DEG C through unidirectional double screw extruder (MT-36 types), extrusion, extrusion temperature,
Screw speed is 160r/min, tie rod, water cooling, air knife drying, pelletizing, is dried in vacuo and obtains matrix masterbatch.
Step 2, weight percent, by waste polyethylene raw material 92%, matrix masterbatch 3%, POE 1%, metallocene gathers
Ethene 1%, Tissuemat E 3%, is placed in high-speed mixer, and it is 260r/min to control rotating speed, at room temperature mixed at high speed 6min, will
Well mixed material is 200 DEG C through unidirectional double screw extruder (MT-36 types), extrusion, extrusion temperature, screw speed 140r/
Min, extruding pelletization, obtain polyethylene regeneration particle.
Obtained polyethylene regeneration particulates' properties testing result is as follows：Density (g/cm3)：0.958；Melt flow rate (MFR)
(190 DEG C, 2.16Kg)/(g/10min)：0.23；Carbon black content/%：2.4；Moisture content/%：0.02；Oxidation induction period (220
℃)/min：36；Heat-proof aging (100 DEG C, 2400h) %：≤35；Tensile strength/Mpa：21；Elongation at break/%：700；Dimension
Card softening point/DEG C：111；Brittle temperature/DEG C：≤-65；Resisting environmental stress and cracking (F50)/h：≥1000；Identation hardness/mm (23
℃)：≤0.2.
Above testing result illustrates that the inventive method by being optimized to production technology and recipe ingredient, is produced
Product there is good resistance to ag(e)ing, good mechanical property and environmental stress crack resistance, can be applied to partly plastic system
In the production of product.
Claims (4)
1. utilize the recycled plastic granules of waste polyethylene production, it is characterised in that weight percent, including waste polyethylene
Raw material 80~92%, matrix masterbatch 1.5~3%, elastomer 1~5%, metallocene PE 1~5%, Tissuemat E 3~
8.5%, described matrix masterbatch, using waste polyethylene raw material as 100%, including following component：Matrix resin：Waste polyethylene
Raw material 100%, antioxidant：Primary antioxidant Hinered phenols antioxidant 1010:1%-3%, auxiliary antioxidant phosphite antioxidants
168：0.5%-2%, UV resistant agent：Ultra-violet absorber UV531,0.1%-2%.
2. the method for recycled plastic granules is produced using waste polyethylene, it is characterised in that comprise the following steps：
Step 1, the pipeline corrosion protection waste polyethylene of screening crushed, cleaned, dehydration, drying obtains waste polyethylene raw material, will
Waste polyethylene raw material and quality are the 1.5%-4% of waste polyethylene raw material antioxidant, quality is waste polyethylene raw material
0.1%-3% UV resistant agent with 150-200r/min rotating speed, mixed at high speed 6-8min at room temperature will be well mixed
Material is through Co rotating Twin Screw Extrusion, and extrusion temperature is 180-200 DEG C, screw speed 140-160r/min, tie rod, water cooling, wind
Knife dries up, pelletizing, and vacuum drying obtains matrix masterbatch, and described antioxidant is by primary antioxidant Hinered phenols antioxidant 1010 and auxiliary
Aid anti-oxidants phosphite antioxidants 168 form, and described UV resistant agent is ultra-violet absorber UV531；
Step 2, weight percent, by waste polyethylene raw material 80~92%, matrix masterbatch 1.5~3%, elastomer 1~
5%, metallocene PE 1~5%, Tissuemat E 3~8.5%, with 260-300r/min rotating speed, mixed at high speed 2- at room temperature
6min, by well mixed material through Co rotating Twin Screw Extrusion, extrusion temperature is 180-200 DEG C, screw speed 120-140r/
Min, extruding pelletization, obtain polyethylene regeneration particle.
3. according to the method for claim 2, it is characterised in that in step 1, described matrix masterbatch, with waste polyethylene
Raw material is 100%, including following component：Matrix resin：Waste polyethylene raw material 100%, antioxidant：Primary antioxidant Hinered phenols
Antioxidant 1010:1%-3%, auxiliary antioxidant phosphite antioxidants 168：0.5%-2%, UV resistant agent：Ultraviolet is inhaled
Receive agent UV531,0.1%-2%.
4. according to the method for claim 2, it is characterised in that in step 2, described elastomer is selected from ethyl vinyl acetate second
The one or two of alkene copolymer and ethylene-octene copolymer.
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| CN201710986064.7A CN107652515A (en) | 2017-10-20 | 2017-10-20 | The recycled plastic granules and its renovation process produced using waste polyethylene |
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| CN201710986064.7A CN107652515A (en) | 2017-10-20 | 2017-10-20 | The recycled plastic granules and its renovation process produced using waste polyethylene |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108772977A (en) * | 2018-05-08 | 2018-11-09 | 安徽瑞赛克再生资源技术股份有限公司 | A kind of recycled plastic granules processing method based on waste plastic film |
| CN114249936A (en) * | 2020-09-24 | 2022-03-29 | 河南庆安化工技术研发有限公司 | Recovery and regeneration process of PE glove production waste |
| CN115403843A (en) * | 2021-10-19 | 2022-11-29 | 上海睿聚环保科技有限公司 | High-quality regenerated polyethylene plastic particles and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105017612A (en) * | 2015-07-13 | 2015-11-04 | 湖南工业大学 | Modified waste polyethylene special material for pipeline and preparation method of modified waste polyethylene special material |
-
2017
- 2017-10-20 CN CN201710986064.7A patent/CN107652515A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105017612A (en) * | 2015-07-13 | 2015-11-04 | 湖南工业大学 | Modified waste polyethylene special material for pipeline and preparation method of modified waste polyethylene special material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108772977A (en) * | 2018-05-08 | 2018-11-09 | 安徽瑞赛克再生资源技术股份有限公司 | A kind of recycled plastic granules processing method based on waste plastic film |
| CN114249936A (en) * | 2020-09-24 | 2022-03-29 | 河南庆安化工技术研发有限公司 | Recovery and regeneration process of PE glove production waste |
| CN115403843A (en) * | 2021-10-19 | 2022-11-29 | 上海睿聚环保科技有限公司 | High-quality regenerated polyethylene plastic particles and preparation method thereof |
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