CN107163283B - It is a kind of by the methods separated with PVC of PET in hybrid solid plastics - Google Patents
It is a kind of by the methods separated with PVC of PET in hybrid solid plastics Download PDFInfo
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- CN107163283B CN107163283B CN201710414541.2A CN201710414541A CN107163283B CN 107163283 B CN107163283 B CN 107163283B CN 201710414541 A CN201710414541 A CN 201710414541A CN 107163283 B CN107163283 B CN 107163283B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/06—Recovery or working-up of waste materials of polymers without chemical reactions
- C08J11/08—Recovery or working-up of waste materials of polymers without chemical reactions using selective solvents for polymer components
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/06—Recovery or working-up of waste materials of polymers without chemical reactions
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08J2327/06—Homopolymers or copolymers of vinyl chloride
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2427/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2427/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08J2427/06—Homopolymers or copolymers of vinyl chloride
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2467/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- 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 discloses one kind by the methods separated with PVC of PET in hybrid solid plastics, belongs to plastics recovery field.The present invention utilizes the difference of two kinds of dissolving plastic degree of PET, PVC, and allocating suitable solvent makes PVC plastic surface occur to be swollen tacky phenomenon, it is adhered to iron powder, using magnetic force by PVC Adsorptions；In whole process, any reaction will not occur for PET, realize the separation of PET and two kinds of plastics of PVC.This method is easy to operate, of low cost, separation purity is high, sharpness of separation is stable, Fully-mechanized production can be achieved, and is adapted to large-scale production.
Description
Technical field
The present invention relates to one kind by the methods separated with PVC of PET in hybrid solid plastics, belongs to technics of reclaim of plastic waste technology
Field.
Background technology
PET is polyethylene terephthalate, is usually used in the material of Phthalates, on the market common mineral spring
Water drinks bottle, meal tray etc. are more using PET as raw material, and application surface is extensive, and global annual consumption is more than 15,000,000 tons.Quilt every year
Up to 8,000,000 tons of discarded PET material, PET material after recycling can as the raw material of the products such as textile, strap,
With higher economic value.Since PET belongs to crystalline polymer, molecular structure high degree of symmetry, there is certain crystallization to take
To ability, a small amount of impurity is enough to destroy its tight structure, material property is drastically declined, causes recovery value to be had a greatly reduced quality, sternly
Ghost image rings PET qualities, so the purity of recycled PET need to reach more than 99.5%, just can guarantee that salvage material recycles life
Production.
PVC is polyvinyl chloride, is impurity common in recycled PET material, since both appearances are very much like, it is difficult to point
Distinguish, and both similar densities, it is difficult to separated with traditional Density Separation method.The processing temperature of PVC is 170 DEG C,
Pyrolysis takes place when temperature is higher than 230 DEG C, produces a large amount of active groups, induces other strands and occurs acutely
Chain rupture decomposition reaction so that material property drastically declines.And the processing temperature of PET recycles more than 260 DEG C so PVC is PET
Most fatal impurity in technique.For this problem, industry always searches for technically breaking through, at present common method in row
Thermal deformation method of identification and infrared spectrum identification separating method.But both of which there are purity deficiency, equipment costliness, high processing costs, point
The problems such as selecting precision unstable, causes the existing artificial separation method for still taking most original in the line.Though artificial separation can guarantee that pure
Degree, but yield is extremely low, as social development, recruitment cost are increasing so that business manpower cost is more heavy.Therefore develop
The separation method that separation purity is high, processing cost is low, sharpness of separation is stablized is the important technical problem in this area.
Due to adulterating PVC solid plastics in the PET solid plastics of recycling, both mixtures are referred to as mixed
Solid plastic.
The content of the invention
For overcome the deficiencies in the prior art, it is an object of the invention to provide one kind by PET in hybrid solid plastics with
The separated methods of PVC, this method in the PVC plastic in hybrid solid plastics by adhering to iron powder so that PVC plastic is in magnetic field
It is lower to be adsorbed, to reach separated effect.
Achieving the object of the present invention can be reached by adopting the following technical scheme that：It is a kind of by PET in hybrid solid plastics
Method separated with PVC, comprises the following steps：
A, the solvent of swelling action occurs for preparation and PVC solid plastics；
B, iron powder is infiltrated with solvent；
C, after the iron powder handled through step B is mixed with hybrid solid plastics, unnecessary iron powder is removed with sieve；
D, the hybrid solid plastics handled using bar magnet or equipment for removing ferric ion absorption through step C, the PVC for collecting adhesion iron powder are consolidated
Body plastics, solid plastic not to be adsorbed are PET solid plastics；
E, with the PVC solid plastics of the adhesion iron powder collected by inorganic acid solution soaking step D, make to be adhered to PVC solids
The iron powder dissolving of plastics, separates and recovers PVC solid plastics；
The solvent is included in n-hexane, ethylbenzene, dimethylbenzene, toluene, cyclohexanone, acetone, hexamethylene, turpentine oil at least
Two kinds.
Preferably, the solvent is made of n-hexane, toluene, acetone；Under room temperature, n-hexane, toluene, acetone volume it
Than for 60:20:20.
Preferably, the solvent is made of n-hexane, ethylbenzene, cyclohexanone；Under room temperature, n-hexane, ethylbenzene, hexamethylene ketoboidies
The ratio between product is 50：20：30.
Preferably, the solvent is made of turpentine oil, hexamethylene, acetone；Under room temperature, turpentine oil, hexamethylene, acetone body
The ratio between product is 30:35:35.
Preferably, the solvent is made of turpentine oil, dimethylbenzene, ethylbenzene；Under room temperature, turpentine oil, dimethylbenzene, ethylbenzene body
The ratio between product is 50:40:10.
Preferably, the solvent is made of n-hexane, turpentine oil, acetone；Under room temperature, n-hexane, turpentine oil, acetone body
The ratio between product is 50:20:30.
With the ratio between the volume of iron powder it is 1~2 under the solvent room temperature preferably, in step B:10；Iron powder it is a diameter of
0.15~0.2mm.
Preferably, in step C, PVC plastic content 1~50%, and the surface area of each piece of solid plastic for 1~
3cm2。
Preferably, in step D, the sieve is plastic mesh, one kind in metallic sieve, bamboo sieve；Wherein metal
Irony porous web, stainless steel porous web or iron wire square hole net may be selected in sieve.
Preferably, in step E, the inorganic acid fluid is the inorganic acid fluid after dilution, including dilute hydrochloric acid, dilute sulfuric acid,
One kind in dust technology.
Preferably, inorganic acid solution dissolves iron powder, iron containing compounds solution is obtained, iron content is obtained after concentrated crystallization
Composition powder.
Action principle of the present invention：
The present invention utilizes the difference of two kinds of dissolving plastic degree of PET, PVC, and using the similar principle to mix, allotment is suitable molten
Agent makes PVC plastic surface occur to be swollen tacky phenomenon, it is adhered to iron powder, using magnetic force by PVC Adsorptions.Whole process
In, since the dissolubility difference of solvent and PET are very big, any reaction will not occur for PET, realize point of PET and two kinds of plastics of PVC
From.
Compared with prior art, the beneficial effects of the present invention are：
1st, the present invention pre-processes iron powder by preparing mixed solvent, and the iron powder after processing can be adhered to PVC plastic
Expect surface so that PVC plastic is adsorbed by bar magnet or equipment for removing ferric ion under magnetic fields, reaches two kinds of plastics of PET and PVC and separate
Effect, PET plastic recycling purity is high；
2nd, the present invention dissolves iron powder by inorganic acid solution, obtains iron containing compounds solution and PVC plastic, realizes PVC plastic
Material recycling, the PVC plastic rate of recovery are high；And iron containing compounds product is obtained after concentrated crystallization, available for chemical industry, realize zero
Pollution, zero-emission, zero loss, meet recycling economy development theory.
3rd, the present invention is easy to operate, of low cost, separation purity is high, sharpness of separation is stable, Fully-mechanized production can be achieved,
It is adapted to large-scale production.
Embodiment
In the following, with embodiment, the present invention is described further：
PET methods separated with PVC, comprise the following steps in a kind of hybrid solid plastics：
A, the solvent of swelling action occurs for preparation and PVC solid plastics；
Preferable scheme uses multi-solvents mixed preparing for the solvent, including n-hexane, ethylbenzene, dimethylbenzene, toluene,
At least two in cyclohexanone, acetone, hexamethylene, turpentine oil；Iron powder after single solvent processing, is adhered to PVC plastic surface
Ineffective, two kinds of plastics inferior separating effects of PET, PVC, therefore, the present invention use multi-solvents mixed preparing solvent solution；
Preferable scheme is purity >=98% of the solvent；
B, iron powder is infiltrated with solvent；
Under the solvent room temperature with the ratio between the volume of iron powder 1~2:10；The amount of solvent of the ratio enables to iron powder
Complete wetting, ensures that swelling action smoothly occurs；The iron powder is not chemically reacted with other solvents, maintains the steady of iron powder
It is qualitative；A diameter of 0.15~the 0.2mm of the iron powder, effect of impregnation of the iron powder in solvent solution in the diameter range is good,
PVC plastic surface can be stably adhered to, adhesiveness is good.
C, after the iron powder handled through step B is mixed with hybrid solid plastics, unnecessary iron powder is removed with sieve；
The ratio between the iron powder and PET, PVC hybrid solid plastics volume are 1~2：4, the iron powder energy in the proportion
Enough to be come into full contact with PVC plastic in hybrid solid plastics, adhesiving effect is good；In PET, PVC hybrid solid plastics, PVC
Plastic content is 1~50%；The hybrid solid plastics can be used first added with liquid detergent or sodium hydroxide solution before separation
Cleaning solution cleaned, remove the non-plastic pollutant such as surface and oil contaminant and dust；The sieve is plastic mesh, metallic screen
One kind in net, bamboo sieve；Wherein irony porous web, stainless steel porous web or iron wire square hole net may be selected in metallic sieve；
Preferable scheme is that the surface area of each piece of solid plastic is 1~3cm2；Can be first before being mixed with iron powder
Mixed plastic is pre-processed, is crushed slabbing or bulk, and fragment similar in size is collected after sieving；Selection one
Determining the solid plastic of surface area can control the time of swelling action relatively uniform so that iron powder fully adheres to, and improves the rate of recovery；
D, the hybrid solid plastics handled using bar magnet or equipment for removing ferric ion absorption through step C, the PVC for collecting adhesion iron powder are consolidated
Body plastics, solid plastic not to be adsorbed are PET solid plastics；
The magnet or equipment for removing ferric ion its magnetic flux are maintained at more than 8000c, to ensure the intensity in magnetic field；Hybrid solid
Plastics must tile by magnetic field, ensure that each block of plastics can be subject to equal magnetic force so that the PVC for adhering to iron powder consolidates
Body plastics are adsorbed under magnetic fields by bar magnet or equipment for removing ferric ion, complete separation.
E, with the PVC solid plastics of the adhesion iron powder collected by inorganic acid solution soaking step D, make to be adhered to PVC solids
The iron powder dissolving of plastics, separates and recovers PVC solid plastics；
The inorganic acid solution is one kind in the hydrochloric acid after dilution, sulfuric acid, nitric acid；PVC plastic after separation due to
Surface adhesion iron powder, can not recycle, and avoid the waste of material resources, and the PVC plastic for adhering to iron powder is put after dilution
Soaked in weak acid, acid is reacted and dissolved with iron, and PVC is acid resisting material, is not corroded, once purged i.e. recoverable.
Due to containing the hydrophilic radicals such as great amount of hydroxy group and carboxyl in PET solid plastic strands, and PVC solid plastics are divided
It is lipophilic group in subchain, in order to avoid solvent solution to react with PET solid plastics as far as possible, the present invention selects molten
Agent is liphophilic solvents.The solubility parameter such as following table of each solvent actual measurement：
Embodiment 1~5
It is a kind of by the methods separated with PVC of PET in hybrid solid plastics, selection n-hexane, toluene and acetone, under room temperature
(25 DEG C) mix each solvent with different volume ratios, allocate suitable mixed solvent, and separation purity passes through infrared spectrum
Scanner carries out analysis verification, specifically includes following steps：
A, prepare and mix with n-hexane, toluene and acetone (the specific volume ratio of solvent is with reference to table 1 in each embodiment) under room temperature
Solvent；
B, the iron powder of a diameter of 0.15mm is put into the mixed solvent infiltration completely, the ratio between volume of solvent and iron powder is 1：
10；
C, the iron powder handled through step B is put into PET, PVC hybrid solid plastics, be uniformly mixed, iron powder is with mixing
Solid plastic volume ratio is 1：4；Unnecessary iron powder is removed with plastic mesh；
D, the hybrid solid plastics handled through step C are adsorbed using bar magnet, collect the PVC plastic of adhesion iron powder, not
The solid plastic adsorbed is PET solid plastics；
E immerses the PVC plastic for adhering to iron powder in dilute hydrochloric acid solution, and PVC plastic is recycled after iron powder is completely dissolved；Dilute salt
Acid and iron powder reaction generation solution of ferrous chloride, condensing crystallizing separates out frerrous chloride crystal, and recycles.
Analysis verification, the PET purity and PVC rate of recovery result such as following table of each embodiment are carried out by IR spectrum scanning instrument
1：
Embodiment 6~10
It is a kind of by the methods separated with PVC of PET in hybrid solid plastics, selection n-hexane, ethylbenzene, cyclohexanone, under room temperature
(25 DEG C) mix each solvent with different volume ratios, allocate suitable mixed solvent, and separation purity passes through infrared spectrum
Scanner carries out analysis verification, specifically includes following steps：
A, (25 DEG C) are matched somebody with somebody with n-hexane, toluene and acetone (the specific volume ratio of solvent is with reference to table 2 in each embodiment) under room temperature
Mixed solvent processed；
B, the iron powder of a diameter of 0.15mm is put into the mixed solvent infiltration completely, the ratio between volume of solvent and iron powder is 1：
10；
C, the iron powder handled through step B is put into PET, PVC hybrid solid plastics, and be uniformly mixed, iron powder is with mixing
It is 1 to close solid plastic volume ratio：4；Unnecessary iron powder is removed with irony porous web；
The hybrid solid plastics that D is handled through step C are adsorbed using bar magnet, collect adhesion iron powder PVC plastic, not by
The solid plastic of absorption is PET solid plastics；
E immerses the PVC plastic for adhering to iron powder in dilute hydrochloric acid solution, and PVC plastic, dilute salt are recycled after iron powder is completely dissolved
Acid and iron powder reaction generation solution of ferrous chloride, condensing crystallizing separates out frerrous chloride crystal, and recycles.
Analysis verification, the PET purity and PVC rate of recovery result such as following table of each embodiment are carried out by IR spectrum scanning instrument
2：
Embodiment 11~15
It is a kind of by the methods separated with PVC of PET in hybrid solid plastics, selection turpentine oil, hexamethylene, acetone, under room temperature
(25 DEG C) mix each solvent with different volume ratios, allocate suitable mixed solvent, and separation purity passes through infrared spectrum
Scanner carries out analysis verification, specifically includes following steps：
A, (25 DEG C) are matched somebody with somebody with turpentine oil, hexamethylene, acetone (the specific volume ratio of solvent is with reference to table 3 in each embodiment) under room temperature
Mixed solvent processed；
B, the iron powder of a diameter of 0.2mm is put into the mixed solvent infiltration completely, the ratio between volume of solvent and iron powder is 2：
10；
C, the iron powder handled through step B is put into PET, PVC hybrid solid plastics, and be uniformly mixed, iron powder is with mixing
It is 2 to close solid plastic volume ratio：4；Unnecessary iron powder is removed with stainless steel porous web；
D, the hybrid solid plastics handled through step C are adsorbed using equipment for removing ferric ion, collect the PVC plastic of adhesion iron powder
Material, solid plastic not to be adsorbed is PET solid plastics；
E, the PVC plastic for adhering to iron powder is immersed in dilution heat of sulfuric acid, PVC plastic is recycled after iron powder is completely dissolved, it is dilute
Sulfuric acid and iron powder reaction generation ferrous sulfate solution, condensing crystallizing separates out errous sulfate crystal, and recycles.
Analysis verification, the PET purity and PVC rate of recovery result such as following table of each embodiment are carried out by IR spectrum scanning instrument
3：
Embodiment 16~20
It is a kind of by the methods separated with PVC of PET in hybrid solid plastics, selection turpentine oil, dimethylbenzene, ethylbenzene, under room temperature
(25 DEG C) mix each solvent with different volume ratios, allocate suitable mixed solvent, and separation purity passes through infrared spectrum
Scanner carries out analysis verification, specifically includes following steps：
A, (25 DEG C) are matched somebody with somebody with turpentine oil, hexamethylene, acetone (the specific volume ratio of solvent is with reference to table 4 in each embodiment) under room temperature
Mixed solvent processed；
B, the iron powder of a diameter of 0.2mm is put into the mixed solvent infiltration completely, the ratio between volume of solvent and iron powder is 2：
10；
C, the iron powder handled through step B is put into PET, PVC hybrid solid plastics, and be uniformly mixed, iron powder is with mixing
It is 2 to close solid plastic volume ratio：4；Unnecessary iron powder is removed with bamboo sieve；
The hybrid solid plastics that D is handled through step C are adsorbed using equipment for removing ferric ion, collect the PVC plastic of adhesion iron powder,
Solid plastic not to be adsorbed is PET solid plastics；
E immerses the PVC plastic for adhering to iron powder in dilution heat of sulfuric acid, and PVC plastic, dilute sulphur are recycled after iron powder is completely dissolved
Acid and iron powder reaction generation ferrous sulfate solution, condensing crystallizing separates out errous sulfate crystal, and recycles.
Analysis verification, the PET purity and PVC rate of recovery result such as following table of each embodiment are carried out by IR spectrum scanning instrument
4：
Embodiment 21~25
A kind of PET methods separated with PVC in hybrid solid plastics, choose n-hexane, turpentine oil, acetone, (25 under room temperature
DEG C) each solvent is mixed with different volume ratios, suitable mixed solvent is allocated, separation purity passes through IR spectrum scanning
Instrument carries out analysis verification, specifically includes following steps：
1) under A, room temperature (25 DEG C) with turpentine oil, hexamethylene, acetone (the specific volume ratio of solvent is with reference to table 5 in each embodiment)
Prepare mixed solvent；
B, the iron powder of a diameter of 0.2mm is put into the mixed solvent infiltration completely, the ratio between volume of solvent and iron powder is 2：
10；
C, the iron powder handled through step B is put into PET, PVC hybrid solid plastics, and be uniformly mixed, iron powder is with mixing
It is 2 to close solid plastic volume ratio：4；Unnecessary iron powder is removed with iron wire square hole net；
D, the hybrid solid plastics handled through step C are adsorbed using equipment for removing ferric ion, collect the PVC plastic of adhesion iron powder
Material, solid plastic not to be adsorbed is PET solid plastics；
E immerses the PVC plastic for adhering to iron powder in dilute nitric acid solution, and PVC plastic is recycled after iron powder is completely dissolved；Dilute nitre
Acid and iron powder reaction generation ferrous nitrate solution, condensing crystallizing separates out ferrous nitrate crystal, and recycles.
Analysis verification, the PET purity and PVC rate of recovery result such as following table of each embodiment are carried out by IR spectrum scanning instrument
5：
The normal temperature condition arrived involved in this case is environment temperature at 25 degrees Celsius.
For those skilled in the art, technical solution that can be as described above and design, make other each
Kind is corresponding to be changed and deforms, and all these change and deform the protection model that should all belong to the claims in the present invention
Within enclosing.
Claims (5)
- It is 1. a kind of by the methods separated with PVC of PET in hybrid solid plastics, it is characterised in that to comprise the following steps：A, the solvent of swelling action occurs for preparation and PVC solid plastics；B, iron powder is infiltrated with solvent；C, after the iron powder handled through step B is mixed with hybrid solid plastics, unnecessary iron powder is removed with sieve；D, the hybrid solid plastics handled using bar magnet or equipment for removing ferric ion absorption through step C, collect the PVC solids modeling of adhesion iron powder Material, solid plastic not to be adsorbed is PET solid plastics；E, with the PVC solid plastics of the adhesion iron powder collected by inorganic acid solution soaking step D, make to be adhered to PVC solid plastics Iron powder dissolving, separate and recover PVC solid plastics；The solvent is made of n-hexane, toluene, acetone, and under room temperature, the ratio between n-hexane, toluene, acetone volume are 60:20:20； Or be made of turpentine oil, hexamethylene, acetone, under room temperature, the ratio between turpentine oil, hexamethylene, acetone volume are 30:35:35；Or It is made of n-hexane, turpentine oil, acetone, under room temperature, the ratio between n-hexane, turpentine oil, acetone volume are 50:20:30.
- 2. as claimed in claim 1 by the methods separated with PVC of PET in hybrid solid plastics, it is characterised in that：In step B, With the ratio between the volume of iron powder it is 1~2 under the solvent room temperature:10；A diameter of 0.15~0.2mm of iron powder.
- 3. as claimed in claim 1 by the methods separated with PVC of PET in hybrid solid plastics, it is characterised in that：In step C, The sieve is plastic mesh, one kind in metallic sieve, bamboo sieve；Wherein metallic sieve is irony porous web, stainless steel Porous web or iron wire square hole net.
- 4. as claimed in claim 1 by the methods separated with PVC of PET in hybrid solid plastics, it is characterised in that：In step C, PVC plastic content is 1~50%, and the surface area of each piece of solid plastic is 1~3cm2。
- 5. as claimed in claim 1 by the methods separated with PVC of PET in hybrid solid plastics, it is characterised in that：In step E, The inorganic acid solution is the inorganic acid solution after dilution, is one kind in dilute hydrochloric acid, dilute sulfuric acid, dust technology.
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| EP3950798A1 (en) * | 2020-08-05 | 2022-02-09 | Probo Sign B.V. | Circular sheet and method for manufacturing a circular sheet |
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| BR112022001150A2 (en) * | 2019-07-26 | 2022-03-15 | Borealis Ag | Method for removing paint or other foreign material from the surface of an article |
| WO2024071618A1 (en) * | 2022-09-28 | 2024-04-04 | 주식회사 엘지화학 | Method for preparing recycled polymers |
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| CN103159980A (en) * | 2013-04-10 | 2013-06-19 | 中南大学 | Separating and recovering method of PET/PVC (Polyethylene Terephthalate/Polyvinyl Chloride) waste plastic |
| CN103709436A (en) * | 2013-12-17 | 2014-04-09 | 湖南万容科技股份有限公司 | Method for separating ABS (Acrylonitrile Butadiene Styrene) and PS (Poly Styrene) from waste mixed plastic and application of method |
| CN106397827A (en) * | 2016-05-10 | 2017-02-15 | 常州塑金高分子科技有限公司 | Method for separating and recovering waste/used plastics |
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| EP3950798A1 (en) * | 2020-08-05 | 2022-02-09 | Probo Sign B.V. | Circular sheet and method for manufacturing a circular sheet |
| NL2026224B1 (en) * | 2020-08-05 | 2022-04-08 | Probo Sign B V | Circular sheet and method for manufacturing a circular sheet |
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Effective date of registration: 20200716 Address after: 528200 Guangdong Province Nanhai District of Foshan City Shishan town Guanyao Hongxing Village Industrial Zone Patentee after: FOSHAN NANHAI CHENGJUN TECHNOLOGY Co.,Ltd. Address before: 527400, Guangdong, Yunfu province Xinxing County Taiping Town Xiasha Village Industrial Zone (Xiasha village committee, West Village, West Transport Gang) one Patentee before: XINXING COUNTY JINGRUFENG PLASTIC Co.,Ltd. |