CN105710994A - Reusing method of waste plastics - Google Patents
Reusing method of waste plastics Download PDFInfo
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- CN105710994A CN105710994A CN201610130640.3A CN201610130640A CN105710994A CN 105710994 A CN105710994 A CN 105710994A CN 201610130640 A CN201610130640 A CN 201610130640A CN 105710994 A CN105710994 A CN 105710994A
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- plastics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/0026—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B17/0404—Disintegrating plastics, e.g. by milling to powder
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Abstract
The invention provides a reusing method of waste plastics. The reusing method of the waste plastics includes the following steps that a mixture of various waste plastics is smashed into block-shaped plastics; the block-shaped plastics are ground into powder plastics; and the powder plastics are subjected to compression molding. Various existing waste plastics are comprehensively recycled, and the mixture of the various waste plastics is obtained; then the mixture of the various waste plastics is directly smashed; then the smashed plastics are ground into powder; finally the powder is subjected to compression molding; and accordingly the waste plastics can be reused. By means of the reusing method of the waste plastics, various plastic products with different components do not need to be separated out of mixed plastic wastes and reused independently, the various waste plastics are comprehensively recycled, moreover, different plastic products can be prepared according to different reusing purposes, and thus the application range of the recycled plastic products is widened.
Description
Technical field
The present invention relates to plastic and reclaim field, in particular to the reuse method of a kind of waste plastic.
Background technology
Plastic is with its good light blocking heat preservation property, and the packaging being largely used in daily life various article, fibrous thermoplastic's sheet material is widely used in the field such as automotive trim, finishing building materials owing to having higher intensity.Along with the increase that fiber thermoplastic composite uses, a large amount of corresponding garbage will be produced future.
In prior art, various different plastics are usually separately recovered by the recoverying and utilizing method of plastic by returned enterprise, are then purchased by each different manufacturing enterprises respectively again, then prepare into different products again.But in this recoverying and utilizing method, returned enterprise needs to carry out sorting recovery to all kinds of, and cost recovery is high；Returned enterprise needs to find the manufacturing enterprise of different demand, there is the big problem that even warehousing pressure is big of transaction difficulty.Therefore, existing recycling flow process considerably increases the cost of recovery, causes that most returned enterprise profit is low, the recovery being engaged in plastic again of being unwilling, and causes that the recovery utilization rate of plastic in the market is low.
And, to add up according to national departments concerned, this type of discarded plastic packing article is every year up to several ten million tons.And plastic refuse adopts the processing mode that soil is buried in a large number, but this processing mode not only have lost substantial amounts of plastic resource, and cannot degrade in soil, and environment is caused pollution.
Therefore, it is badly in need of providing a kind of and plastic is carried out low cost recovery and treatment method, reduce the pollution to environment of the discarded plastic, and improve the recovery utilization rate of plastic.
Summary of the invention
Present invention is primarily targeted at the reuse method that a kind of waste plastic is provided, to solve the problem that in prior art, the recovery utilization rate of plastic is low.
To achieve these goals, the invention provides the reuse method of a kind of waste plastic, this reuse method comprises the following steps: the mixture of multiple waste plastic is ground into block plastics；Bulk plastics are worn into powder body plastics；And by powder body plastic pressing forming.
Further, the mixture of multiple waste plastic includes fiber reinforced thermolplastic composite material.
Further, the mixture of multiple waste plastic includes the fiber reinforced thermolplastic composite material that weight/mass percentage composition is 10～60%.
Further, the step of powder body plastic pressing forming is being included: by powder body Plastic dispersion between multiple fiber reinforced thermolplastic composite plate unit, cambium layer stack structure, each fiber reinforced thermolplastic composite plate unit includes the fiber reinforced thermolplastic composite plate that the multilamellar of a layer or stacking is discarded；Stepped construction is compressing.
Further, multiple fiber reinforced thermolplastic composite plate unit are identical.
Further, in multiple fiber reinforced thermolplastic composite plate unit, at least two fiber reinforced thermolplastic composite plate unit is different.
Further, fiber reinforced thermolplastic composite plate weight/mass percentage composition in stepped construction is 10～60%.
Further, before the mixture of multiple waste plastic is ground into the step of block plastics, reuse method also includes: mixture is sequentially carried out cleaning, dries and except the step of metal impurities；The step preferably cleaned is carried out with water；Preferably dry step adopts vacuum drying, more preferably in, at 55～65 DEG C, carrying out vacuum drying when pressure is 0.07～0.091MPa.
Further, adopt the method for ball milling that bulk plastics are worn into powder body plastics, it is preferable that the particle diameter of powder body plastics is less than 10mm.
Further, step compressing for stepped construction will adopt the method for hot pressing suppress；The temperature of preferred hot pressing is 110～250 DEG C, and pressure is 10～40MPa.
Application technical scheme, by existing multiple discarded plastics are carried out synthetical recovery, obtain the mixture of multiple waste plastic, then directly the mixture of multiple waste plastic is pulverized, then regrind into powder body, finally pressed by powder molding can be realized the re-using to waste plastic.The above-mentioned reuse method of the present invention both plastics without separating every kind of heterogeneity from mixed plastic waste individually recycle, achieve again the comprehensive reutilization to multiple waste plastic, but also different plastics can be prepared according to the difference of recycling purpose, expand the range of application of recycled plastic goods.
Detailed description of the invention
It should be noted that when not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.The present invention is described in detail below in conjunction with embodiment.
As background section is previously mentioned, the defects such as the waste pollution environment and the wasting of resources that there is plastic in prior art, for improving this situation of prior art, in a kind of typical embodiment of the present invention, providing the reuse method of a kind of waste plastic, this reuse method comprises the following steps: the mixture of multiple waste plastic is ground into block plastics；Bulk plastics are worn into powder body plastics；And by powder body plastic pressing forming.
The reuse method of the above-mentioned waste plastic of the present invention, by existing multiple discarded plastics are carried out synthetical recovery, obtain the mixture of multiple waste plastic, then directly the mixture of multiple waste plastic is pulverized, then regrind into powder body, finally pressed by powder molding can be realized the re-using to waste plastic.The above-mentioned reuse method of the present invention both plastics without separating every kind of heterogeneity from mixed plastic waste individually recycle, achieve again the comprehensive reutilization to multiple waste plastic, but also different plastics can be prepared according to the difference of recycling purpose, expand the range of application of recycled plastic goods.
It is usually multiple waste plastic mixes owing to existing garbage reclaiming the plastic returned, and the thinking of the recycling of existing waste plastic is that same category of plastic product is circulated utilization.And, the process of recycle and reuse is completed by different enterprises respectively, as background technology is previously mentioned, returned enterprise recycles the enterprise's different plastic to reclaiming of demand of the kind of plastic to being intended to reclaim according to difference and classifies, then each recycling enterprise buy each from returned enterprise respectively needed for recycled plastic goods recycle.That is, different types of plastic is all carried out individually recycling by the recycling of existing scrapped plastic products, such as, only to polyethylene plastic products or only polypropylene plastics products is individually recycled.Thus, generally needing the different types of plastics in waste plastic mixture are classified or sorted in the process of recycling, the kind of prepared plastic is also relatively single.And in the above-mentioned reuse method of the present invention, the mixture of multiple waste plastic refers to the mixture of the multiple plastics of the recovery of existing various discarded non-classified or sorting, and concrete plastics kind includes but are not limited to the plastics such as polyethylene, polrvinyl chloride, polypropylene, nylon, lucite, polymethyl methacrylate, polybutylene terephthalate (PBT), polyethylene terephthalate and Merlon.In one preferred embodiment of the present invention, said mixture at least includes fiber reinforced thermolplastic composite material.
The kind of the fiber reinforced thermolplastic composite material existed in prior art has a lot, including short fiber reinforced thermoplastic (SFT), long fiber reinforced thermoplastic composites (LFT), glass-fiber felt reinforced thermal-plastic plastic (GMT) and continuous fiber reinforced thermoplastic composite material (CFRTP).More preferred embodiment at least includes fiber reinforced thermolplastic composite material.Due to the recycling of this kind of fiber reinforced thermolplastic composite material is little in prior art, to reduce the waste of the plastic to such function admirable.Same, other kinds of fiber reinforced thermolplastic composite material can individually or adopt the method for the present invention to recycle together with fiber reinforced thermolplastic composite material.
In the above-mentioned reuse method of the present invention, it is possible to according to recycling purpose and the content of a certain or several specific plastics is carried out Reasonable adjustment by the difference of hardness requirement.Can be such as prepare plastic bottle or plastics tables and chairs and the content of the plastics of special component in mixed plastic is carried out Reasonable adjustment according to the purpose of recycling.In one preferred embodiment of the present invention, the mixture of above-mentioned multiple waste plastic at least includes the fiber reinforced thermolplastic composite material that weight/mass percentage composition is 10～60%.Due to the advantage that fiber reinforced thermolplastic composite material has the moderate combination of flexibility of hardness and rigidity, the weight/mass percentage composition of fiber reinforced thermolplastic composite material in the mixture of multiple waste plastic is controlled in the scope of 10～60%, be easy to according to recycling purpose difference, by the mixture of the multiple waste plastic of Reasonable adjustment the weight/mass percentage composition of fiber reinforced thermolplastic composite material number reach to prepare the purpose of different product.
In the above-mentioned reuse method of the present invention, step extruded for powder body plastics can be adopted existing compressing step, such as hot-forming.In one preferred embodiment of the present invention, above-mentioned step extruded for powder body plastics is included: by powder body Plastic dispersion between multiple fiber reinforced thermolplastic composite plate unit, cambium layer stack structure, each fiber reinforced thermolplastic composite plate unit includes the fiber reinforced thermolplastic composite plate that the multilamellar of a layer or stacking is discarded；Stepped construction is compressing.
In above-mentioned preferred embodiment, owing to the hardness of powder body plastics is relatively small, and the hardness of fiber reinforced thermolplastic composite plate is relatively large, by by above-mentioned powder body Plastic dispersion in including between one or more layers fiber reinforced thermolplastic composite plate unit, cambium layer stack structure, then again that stepped construction is compressing, it is simple to the spaced hardness regulating product of material utilizing hardness level different, make compressing product meet the demand of recycling.
In the above-mentioned reuse method of the present invention, in multi-layer fiber, powder body Plastic dispersion is strengthened the step of cambium layer stack structure between thermoplastic composite plate according to the difference of actually required hardness, can rationally select powder body plastics to strengthen the dispersing mode between thermoplastic composite plate at multi-layer fiber.In one preferred embodiment of the present invention, above-mentioned dispersing mode be by powder body Plastic dispersion between multiple identical fiber reinforced thermolplastic composite plate unit.Identical fiber reinforced thermolplastic composite plate unit can be all include between the unit of one layer of fiber reinforced thermolplastic composite plate, it is also possible to is be all include between the unit of two-layer fiber reinforced thermolplastic composite plate.This dispersing mode is relatively uniform, and the adjustment of hardness is also relatively uniform.In another kind preferred embodiment of the present invention, above-mentioned dispersing mode is dispersion powder plastics between multiple fiber reinforced thermolplastic composite plate unit that at least two fiber reinforced thermolplastic composite plate unit differs, this dispersing mode is relatively less uniform to the degree of scatter of plastics powder body, but scatter operation is relatively more flexible.
In above-mentioned reuse method, when utilizing fiber reinforced thermolplastic composite plate as basic sheet material skeleton, and when disperseing above-mentioned powder body plastics in the middle of this skeleton, it is possible to meet the requirement to hardness of the plastic of routine by regulating the weight/mass percentage composition of fiber reinforced thermolplastic composite plate.In one preferred embodiment of the present invention, above-mentioned fiber reinforced thermolplastic composite plate weight/mass percentage composition in stepped construction is 10～60%, and this content disclosure satisfy that the overwhelming majority plastic requirement to hardness.
In the above-mentioned reuse method of the present invention, also include before the mixture of the multiple waste plastic reclaimed is ground into the step of block plastics mixture being sequentially carried out cleaning, drying and except the step of metal impurities.Mixture at the multiple waste plastic to recovery is carried out the impurity removing in waste plastic, reduces the performance impact to subsequent product.Dry is to prevent the moisture impact on subsequent step.Also for mode metal impurities follow-up compressing step had undesirable effect except the step of metal impurities and then affect the performance of compressing product.
Above-mentioned dry mode is not limited only to vacuum drying, and vacuum drying can realize drying more quickly.Concrete vacuum drying actual conditions can rationally be arranged according to actual needs.In another preferred embodiment of the present invention, the step of cleaning is carried out with water；Adopting vacuum drying in preferably dry step, more preferably in, at 55～65 DEG C, carrying out vacuum drying when pressure is 0.07～0.091MPa, drying time, faster drying effect was better.
The particle diameter of powder body plastics be there is no particular/special requirement by above-mentioned reuse method, as long as disclosure satisfy that compressing particle diameter demand.In one preferred embodiment of the present invention, the particle diameter of above-mentioned powder body plastics is less than 10mm.Particle diameter is easy to the difference according to the demand such as density, hardness less than 10mm, the recycling plastic of the different demand of preparation.
In above-mentioned reuse method, by step compressing for stepped construction preferably but be not limited only to adopt the method for hot pressing to suppress.Hot-pressing technique is ripe, easy to operate, applied range.More preferably the temperature of hot pressing is 110～250 DEG C, and pressure is more than 10MPa.Carry out hot pressing at this temperature and pressure and there is the beneficial effects such as forming quality is stable, efficient.
Further illustrate beneficial effects of the present invention below in conjunction with specific embodiments.
Embodiment 1
The mixture of the plastics such as the waste polyethylene of recovery, polypropylene, nylon, lucite, polymethyl methacrylate, polybutylene terephthalate (PBT), polyethylene terephthalate, Merlon and glass fiber felt reinforced thermoplastics composite board is carried out shearing and obtains block plastics, it is carried out sending in rotary drum washer, wherein, fiber reinforced thermolplastic composite board weight/mass percentage composition in the mixture is 10%；
Mixture is immersed in the water that temperature is 30 DEG C and repeatedly rolls strand, to remove oils and fats and dirt；
Being sent in vacuum drier by mixture after cleaning and carry out vacuum drying, vacuum drying temperature is 55 DEG C, and pressure is 0.07MPa；
Being inserted by mixture after evaporation is provided with in the conveyer belt removing irony facility, removes irony foreign material in transmission process；
Vacuum high-temperature anhydrate process after the fluffy processing being unfavorable for postorder of mixture, by the mixture after decontamination being carried out spheroidising at the temperature of 110 DEG C, recycling twin-screw machine mixture is thoroughly pulverized, obtain powder body plastics；Wherein, the mean diameter of powder body plastics is 9mm；
Inserting in single lead screw ex truding briquetting machine by the powder body plastics after pulverizing, the temperature of extruding is 110 DEG C, and pressure is 10MPa, one-body molded is processed into Plastics table.
Embodiment 2
The mixture of the plastics such as the waste polyethylene of recovery, polypropylene, nylon, lucite, polymethyl methacrylate, polybutylene terephthalate (PBT), polyethylene terephthalate, Merlon and discarded continuous fiber reinforcement thermoplastic composite board is carried out shearing and obtains block plastics, it is carried out sending in rotary drum washer, wherein, continuous fiber reinforcement thermoplastic composite board weight/mass percentage composition in the mixture is 60%；
Mixture is immersed in the water that temperature is 45 DEG C and repeatedly rolls strand, to remove oils and fats and dirt；
Being sent in vacuum drier by mixture after cleaning and carry out vacuum drying, vacuum drying temperature is 65 DEG C, and pressure is 0.091MPa；
Being inserted by mixture after evaporation is provided with in the conveyer belt removing irony facility, removes irony foreign material in transmission process；
Vacuum high-temperature anhydrate process after the fluffy processing being unfavorable for postorder of mixture, by the mixture after decontamination being carried out spheroidising at the temperature of 250 DEG C, recycling twin-screw machine mixture is thoroughly pulverized, obtain powder body plastics；Wherein, the mean diameter of powder body plastics is 6mm；
Inserting in single lead screw ex truding briquetting machine by the powder body plastics after pulverizing, the temperature of extruding is 250 DEG C, and pressure is 40MPa, one-body molded is processed into Plastic chair.
Embodiment 3
Just discarded long fiber reinforcement plastic composite board material shears, clean up after, and using every two-layer long fiber reinforcement thermoplastic composite plate precompressed as a composite plate unit；
The mixture of the plastics such as the discarded polyethylene reclaimed, polypropylene, nylon, lucite, polymethyl methacrylate is carried out shearing and obtains block plastics, be carried out sending in rotary drum washer；
Mixture is immersed in the water that temperature is 35 DEG C and repeatedly rolls strand, to remove oils and fats and dirt；
Being sent in vacuum drier by mixture after cleaning and carry out vacuum drying, vacuum drying temperature is 60 DEG C, and pressure is 0.08MPa；
Being inserted by mixture after evaporation is provided with in the conveyer belt removing irony facility, removes irony foreign material in transmission process；
Vacuum high-temperature anhydrate process after the fluffy processing being unfavorable for postorder of mixture, by the mixture after decontamination being carried out spheroidising at the temperature of 150 DEG C, recycling twin-screw machine mixture is thoroughly pulverized, obtain powder body plastics；Wherein, the mean diameter of powder body plastics is 8mm；
Taking multiple above-mentioned composite plate unit, and will disperse between dispersed for above-mentioned powder body plastics and each composite plate unit, cambium layer stack structure, wherein, long fiber reinforcement plastic composite board material weight/mass percentage composition in stepped construction is 50%；
Inserting in heat pressing forming machines by above-mentioned stepped construction, the temperature of hot pressing is 210 DEG C, and pressure is 15MPa, one-body molded is processed into plastic garbage cylinder.
Embodiment 4
Discarded continuous fiber reinforcement thermoplastic composite board carrying out recovery and rinsing clean, every layer of continuous fiber reinforced thermoplastic composite plate is as a composite plate unit；
The mixture of the plastics such as the discarded polyethylene reclaimed, polypropylene, nylon, lucite, polymethyl methacrylate is carried out shearing and obtains block plastics, be carried out sending in rotary drum washer；
Mixture is immersed in the water that temperature is 40 DEG C and repeatedly rolls strand, to remove oils and fats and dirt；
Being sent in vacuum drier by mixture after cleaning and carry out vacuum drying, vacuum drying temperature is 62 DEG C, and pressure is 0.075MPa；
Being inserted by mixture after evaporation is provided with in the conveyer belt removing irony facility, removes irony foreign material in transmission process；
Vacuum high-temperature anhydrate process after the fluffy processing being unfavorable for postorder of mixture, by the mixture after decontamination being carried out spheroidising at the temperature of 220 DEG C, recycling twin-screw machine mixture is thoroughly pulverized, obtain powder body plastics；Wherein, the mean diameter of powder body plastics is 5mm；
Taking the continuous fiber reinforcement thermoplastic composite board that polylith cleans up, and disperse above-mentioned powder body plastics between each composite plate unit, cambium layer stack structure, wherein, continuous fiber reinforcement thermoplastic composite board weight/mass percentage composition in stepped construction is 40%；
Inserting in heat pressing forming machines by above-mentioned stepped construction, the temperature of hot pressing is 230 DEG C, and pressure is 20MPa, one-body molded is processed into plastic imitated wood floor board.
Embodiment 5
The mixture of the discarded polyethylene, polypropylene, nylon, lucite, polymethyl methacrylate, polybutylene terephthalate (PBT), polyethylene terephthalate, polycarbonate plastic goods and the discarded short fiber reinforced plastic composite board material that reclaim is carried out shearing and obtains block plastics, wherein, short fiber reinforced plastic composite board material weight/mass percentage composition in the mixture is 30%；
Being sent in ball mill by above-mentioned block plastics, at the temperature of 200 DEG C, block plastics are carried out spheroidising, bulk plastics are thoroughly pulverized by recycling twin-screw machine, obtain powder body plastics；Wherein, the mean diameter of powder body plastics is 4mm；
Inserting in single lead screw ex truding briquetting machine by the powder body plastics after pulverizing, the temperature of extruding is 180 DEG C, and pressure is 30MPa, one-body molded is processed into plastic containing case.
Can be seen that in from the above, embodiment 1～5 adopts the mixed plastic goods reclaimed, and control wherein fiber reinforced thermolplastic and meet the weight/mass percentage composition of sheet material in 10～60% scopes, make the various embodiments described above can not only prepare various plastic products required on market, and prepared plastic product disclosure satisfy that the performance requirements such as hardness and the toughness of corresponding product.Visible, adopt the waste plastic reuse method of the application, by simple processing step and general equipment, waste fiber just can be strengthened plastic composite board material and multiple plastic refuse is directly prepared into the required plastics such as container, the multiple plastic refuse is made to obtain integrated treatment, it is to avoid selection respectively, the sky high cost processed respectively；Plastic refuse is processed, environmentally friendly protection；Plastic refuse directly obtains sheet material after processing, and technique is simple, and whole process carries out in airtight system, non-secondary pollution, is suitable for producing in enormous quantities.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (10)
1. the reuse method of a waste plastic, it is characterised in that described reuse method comprises the following steps:
The mixture of multiple waste plastic is ground into block plastics；
Described block plastics are worn into powder body plastics；And
By described powder body plastic pressing forming.
2. reuse method according to claim 1, it is characterised in that the mixture of described multiple waste plastic includes fiber reinforced thermolplastic composite material.
3. reuse method according to claim 2, it is characterised in that the mixture of described multiple waste plastic includes the fiber reinforced thermolplastic composite material that weight/mass percentage composition is 10～60%.
4. reuse method according to claim 1, it is characterised in that the step of described powder body plastic pressing forming is being included:
By described powder body Plastic dispersion between multiple fiber reinforced thermolplastic composite plate unit, cambium layer stack structure, each described fiber reinforced thermolplastic composite plate unit includes the fiber reinforced thermolplastic composite plate that the multilamellar of a layer or stacking is discarded；
By compressing for described stepped construction.
5. reuse method according to claim 4, it is characterised in that multiple described fiber reinforced thermolplastic composite plate unit are identical.
6. reuse method according to claim 4, it is characterised in that in multiple described fiber reinforced thermolplastic composite plate unit, fiber reinforced thermolplastic composite plate unit described at least two is different.
7. reuse method according to claim 4, it is characterised in that described fiber reinforced thermolplastic composite plate weight/mass percentage composition in described stepped construction is 10～60%.
8. reuse method according to any one of claim 1 to 7, it is characterized in that, before the described mixture by multiple waste plastic is ground into the step of block plastics, described reuse method also includes: described mixture is sequentially carried out cleaning, dries and except the step of metal impurities；The step of preferred described cleaning is carried out with water；Preferred described dry step adopts vacuum drying, more preferably in, at 55～65 DEG C, carrying out vacuum drying when pressure is 0.07～0.091MPa.
9. reuse method according to any one of claim 1 to 7, it is characterised in that adopt the mode of ball milling that described block plastics are worn into powder body plastics, it is preferable that the particle diameter of described powder body plastics is less than 10mm.
10. reuse method according to claim 4, it is characterised in that suppress adopting the method for hot pressing in step compressing for described stepped construction；The temperature of preferred described hot pressing is 110～250 DEG C, and pressure is 10～40MPa.
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| CN201610130640.3A CN105710994B (en) | 2016-03-08 | 2016-03-08 | The reuse method of waste plastic |
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| CN201610130640.3A CN105710994B (en) | 2016-03-08 | 2016-03-08 | The reuse method of waste plastic |
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| CN113650193A (en) * | 2021-08-13 | 2021-11-16 | 四川大学 | Method for recycling multi-component mixed plastic waste |
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