CN113172794A - Method for recovering ABS reclaimed material and recovered ABS reclaimed material - Google Patents
Method for recovering ABS reclaimed material and recovered ABS reclaimed material Download PDFInfo
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- CN113172794A CN113172794A CN202110375152.XA CN202110375152A CN113172794A CN 113172794 A CN113172794 A CN 113172794A CN 202110375152 A CN202110375152 A CN 202110375152A CN 113172794 A CN113172794 A CN 113172794A
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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
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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
- B29B17/02—Separating plastics from other materials
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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
- B29B17/0412—Disintegrating plastics, e.g. by milling to large particles, e.g. beads, granules, flakes, slices
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L55/00—Compositions of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08L23/00 - C08L53/00
- C08L55/02—ABS [Acrylonitrile-Butadiene-Styrene] polymers
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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
- B29B2017/001—Pretreating the materials before recovery
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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
- B29B17/02—Separating plastics from other materials
- B29B2017/0203—Separating plastics from 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
- B29B17/02—Separating plastics from other materials
- B29B2017/0213—Specific separating techniques
- B29B2017/0217—Mechanical separating techniques; devices therefor
- B29B2017/0237—Mechanical separating techniques; devices therefor using density difference
- B29B2017/0244—Mechanical separating techniques; devices therefor using density difference in liquids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
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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
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
The invention relates to a method for recovering an ABS reclaimed material and the recovered ABS reclaimed material, belonging to the technical field of recovered high polymer materials. The recovery method of the ABS reclaimed material firstly carries out pre-cooling treatment on the ABS waste material at the temperature of-10 to-30 ℃, greatly reduces dust pollution and powder loss in the crushing process, and then adopts seawater for rinsing, compared with the method of adding NaCl into the conventional clear water, the method is more environment-friendly and convenient; then cleaning with clear water, finally dehydrating and drying to obtain the ABS reclaimed material, wherein the recovery rate can reach 99 percent or more.
Description
Technical Field
The invention relates to a method for recovering an ABS reclaimed material and the recovered ABS reclaimed material, belonging to the technical field of recovered high polymer materials.
Background
The recovered ABS plastic is taken as a renewable resource, is widely applied to various industries at present, and the dosage is rapidly increased. As a recycled ABS plastic raw material, the problems of large waste, serious pollution and poor performance exist in the recycling process, the conventional recycled ABS recycling crushing adopts direct dry crushing or water crushing, and because the ABS material has better toughness, excessive mechanical force is needed for crushing, so that a large amount of dust and powder are wasted; in the cleaning process, in order to remove impurities (including metal, silt, PVC, PC and the like) with density higher than that of ABS, a large amount of NaCl is often added into water for rinsing, so that a large amount of water pollution is caused; because ABS is a material which is easy to oxidize, crack and yellow, the recycling, melting, extruding and granulating cause the odor of the regenerated ABS material to increase. Therefore, a set of methods and formulas suitable for recycling and processing ABS materials are needed to obtain high-quality, high-performance, low-waste and environment-friendly recycled ABS plastics.
In the prior art scheme, the recovery of waste ABS is extensive, the problems of low recovery rate, serious pollution, poor performance and the like exist, and for the odor control of ABS materials, an odor adsorption method is conventionally adopted, and the heat resistance of the materials is not improved.
For example, in the Chinese patent publication No. CN105440563B, a regenerated ABS material obtained by crushing, silica gel removing, cleaning, rinsing and drying is adopted, and in the recovery method, because the ABS is hard in texture, the ABS dust pollution is more, the loss of the powder is large, and the recovery rate is lower.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a method for recovering ABS reclaimed materials with high recovery rate, and the method greatly reduces ABS dust pollution and scrap loss in the crushing process.
The purpose of the invention can be realized by the following technical scheme: a method for recovering ABS reclaimed materials comprises the steps of classifying ABS waste materials, pre-cooling, crushing into broken pieces, sequentially washing with seawater and clear water, and finally dehydrating and drying to obtain the ABS reclaimed materials.
Compared with the method of adding NaCl into the conventional clear water, the method is more environment-friendly and convenient. Then cleaning with clear water, finally dehydrating and drying to obtain the ABS reclaimed material, wherein the recovery rate can reach 99 percent or more.
In the method for recovering the ABS reclaimed material, the pre-cooling treatment temperature is-10 to-30 ℃, and the pre-cooling treatment time is 5min to 60 min. The impact strength of ABS changes along with the change of environmental temperature, and the impact strength begins to reduce along with the reduction of temperature, namely the toughness is reduced; the reason why the temperature of the precooling treatment needs to be controlled to be-10 to-30 ℃ is that at low temperature, Van der Waals force in a rubber phase of the ABS is increased, movement of rubber molecules is hindered, and therefore toughness of the ABS is reduced, and subsequent crushing treatment is facilitated. But when the pre-cooling treatment temperature is lower than-30 ℃, the impact strength of ABS is too low, brittle fracture is generated, and excessive dust is caused; when the pre-cooling treatment temperature is higher than-10 ℃, ABS still has better toughness, and requires larger mechanical force for crushing and longer crushing time, thereby generating excessive dust pollution and dust loss.
In the method for recovering the ABS reclaimed material, the precooled ABS waste material is crushed into crushing pieces with the grain diameter less than or equal to 15 mm. The dry crusher is adopted for crushing, a filter screen is arranged in the dry crusher, the diameter of the mesh is 15mm, the crushed ABS material with the diameter smaller than 15mm can be crushed through the filter screen, and the ABS material with the diameter larger than or equal to 15mm can be circularly crushed.
In the method for recovering the ABS reclaimed material, the broken pieces are added into seawater to be stirred and cleaned, and the floated ABS material is collected, wherein the stirring and cleaning time is 1-30 min, and the speed is 10-100 r/min.
Preferably, the density of seawater is 1.04g/cm3-1.07g/cm3。
In the method for recovering the ABS reclaimed material, the ABS material collected after being cleaned by seawater is added with clean water to be stirred and cleaned, and the settled ABS material is collected, wherein the cleaning time is 1-30 min, and the speed is 50-150 r/min.
In the method for recovering the ABS reclaimed material, the ABS material collected after being cleaned by clear water is dehydrated in a dehydrator and then dried in a drying barrel, the dehydration rotation speed is 1000-1800 r/min, and the drying temperature is set to be 50-80 ℃.
The invention also provides the ABS reclaimed material recovered by the recovery method.
The invention also provides a regenerated ABS composite material, which comprises 100 parts of ABS regenerated material recovered by the recovery method, 1-5 parts of functionalized multi-walled carbon nanotube composite material and 0.5-5 parts of deodorant.
The regenerated ABS composite material also comprises 0.5-5 parts of antioxidant.
Preferably, the functionalized multi-wall carbon nanotube composite material comprises the following components in parts by weight: 50-80 parts of AS powder and 20-50 parts of aminated multi-walled carbon nanotubes.
Further preferably, the AS powder is AS resin powder or AS plastic powder.
More preferably, the AS powder is spherical styrene-acrylonitrile copolymer powder with the average particle diameter of between 100-300 mu m.
Preferably, the aminated multi-walled carbon nanotube is obtained by using a carboxylated carbon nanotube as an initiator, converting carboxyl into amide through amidation, and decarbonylating at high temperature, wherein the aminated multi-walled carbon nanotube has an outer diameter of 8-15 nm, an inner diameter of 2-4 nm, a length of 40-70 mu m and-NH2The content is more than or equal to 0.35 percent.
The functionalized multi-walled carbon nanotube composite material is prepared by the following steps:
s1, weighing AS powder and aminated multi-walled carbon nanotubes, and respectively placing the AS powder and the aminated multi-walled carbon nanotubes in a chloroform solvent to prepare an AS solution and an aminated multi-walled carbon nanotube solution, wherein the solid-to-liquid ratio (mass) of the AS powder to the chloroform is 1 (1.5-8.0), and the solid-to-liquid ratio (mass) of the aminated multi-walled carbon nanotubes to the chloroform is 1: (0.5-8.0).
And S2, respectively carrying out ultrasonic treatment on the solutions prepared in the S1, stirring the solutions for 1-3 hours by using magnetic force, then mixing the two solutions, carrying out ultrasonic treatment again, and stirring the solutions for 1-3 hours by using magnetic force.
S3, placing the mixed solution finally prepared in the S2 in a solid-liquid separation device, heating a container in which the solution is placed at 70-80 ℃, evaporating and recycling chloroform, recycling the chloroform, obtaining the AS/aminated multi-walled carbon nanotube composite material after the chloroform is evaporated, and cleaning, drying and grinding the AS/aminated multi-walled carbon nanotube composite material by using ethanol and clear water to prepare the functionalized multi-walled carbon nanotube composite material powder.
In the regenerated ABS composite material, the deodorant is at least one of an adsorbent and an extractant, and a composite scheme of the adsorbent and the extractant is preferred.
Further preferably, the composite scheme of the adsorbent and the extracting agent is that the adsorbent and the extracting agent are prepared according to the mass ratio of 1 (0.2-5).
In the regenerated ABS composite material, the antioxidant is at least one of antioxidant 1010, antioxidant 168, antioxidant 1076, antioxidant 1098 and antioxidant 300.
Compared with the prior art, the method for recovering the ABS reclaimed material firstly precools the ABS waste material at the temperature of-10 to-30 ℃, greatly reduces dust pollution and powder loss in the crushing process, and then rinses the ABS waste material by adopting seawater, so that the method is more environment-friendly and convenient compared with the method of adding NaCl into the conventional clear water; then cleaning with clear water, finally dehydrating and drying to obtain the ABS reclaimed material, wherein the recovery rate can reach 99 percent or more. In addition, a proper amount of functionalized multi-walled carbon nanotube composite material is added into the recovered ABS reclaimed material to enhance the thermal stability of the ABS material, and meanwhile, the odor of the regenerated ABS material is cooperatively controlled by matching with the odor removing agent, so that the ABS reclaimed material has a better effect compared with the ABS reclaimed material which is simply used.
Detailed Description
The following are specific examples of the present invention and further describe the technical solutions of the present invention, but the present invention is not limited to these examples.
Example 1
Separating the ABS pipeline with milk yellow color by a color sorter after consumption, andcooling the pipeline to-10 deg.C, and pre-cooling for 8 min; crushing the cooled creamy yellow ABS pipeline by adopting a dry crusher with an inner filter screen of 15mm to obtain ABS pipeline crushed pieces with the diameter less than 15 mm; placing the ABS pipeline broken piece in seawater (density 1.04 g/cm)3) In the tank, stirring for 1min at a stirring speed of 100r/min by adopting a stirring paddle, and collecting floated crushed ABS pipeline slices; transferring the ABS pipeline broken pieces subjected to seawater rinsing into a clear water tank, stirring for 30min at a stirring speed of 50r/min by using a stirring paddle, and collecting sunken ABS pipeline broken pieces; and putting the ABS pipeline broken pieces cleaned by the clean water into a cleaning dehydration dryer, setting the dehydration rotation speed to be 1000r/min and the drying temperature to be 80 ℃, and dehydrating and drying to obtain the pure regenerated ABS pipeline broken piece material.
Example 2
After consumption, recycling the ABS pipeline, separating the ABS pipeline in milk yellow through a color sorter, cooling the pipeline to-30 ℃, and pre-cooling for 5 min; crushing the cooled creamy yellow ABS pipeline by adopting a dry crusher with an inner filter screen of 15mm to obtain ABS pipeline crushed pieces with the diameter less than 15 mm; placing the ABS pipeline broken piece in seawater (density 1.07 g/cm)3) In the tank, stirring for 30min at a stirring speed of 10r/min by adopting a stirring paddle, and collecting floated crushed ABS pipeline slices; transferring the ABS pipeline broken pieces subjected to seawater rinsing into a clear water tank, stirring for 1min at a stirring speed of 150r/min by using a stirring paddle, and collecting sunken ABS pipeline broken pieces; and putting the ABS pipeline broken pieces cleaned by the clean water into a cleaning dehydration dryer, setting the dehydration rotation speed to be 1800r/min and the drying temperature to be 50 ℃, and performing dehydration drying to obtain the pure regenerated ABS pipeline broken piece material.
Example 3
After consumption, recycling the ABS pipeline, separating the ABS pipeline in milk yellow through a color sorter, cooling the pipeline to-30 ℃, and pre-cooling for 20 min; crushing the cooled creamy yellow ABS pipeline by adopting a dry crusher with an inner filter screen of 15mm to obtain ABS pipeline crushed pieces with the diameter less than 15 mm; placing the ABS pipeline broken piece in seawater (density 1.07 g/cm)3) In the tank, the mixture is stirred for 10min at a stirring speed of 50r/min by a stirring paddle, and then collected and floatedThe ABS pipeline crushing piece; transferring the ABS pipeline broken pieces subjected to seawater rinsing into a clear water tank, stirring for 5min at a stirring speed of 100r/min by using a stirring paddle, and collecting sunken ABS pipeline broken pieces; and putting the ABS pipeline broken pieces cleaned by the clean water into a cleaning dehydration dryer, setting the dehydration rotation speed to be 1500r/min and the drying temperature to be 60 ℃, and performing dehydration drying to obtain the pure regenerated ABS pipeline broken piece material.
Example 4
Separating the post-cost recovered ABS pipeline by a color sorter, cooling the pipeline to-25 ℃, and pre-cooling for 30 min; crushing the cooled creamy yellow ABS pipeline by adopting a dry crusher with an inner filter screen of 15mm to obtain ABS pipeline crushed pieces with the diameter less than 15 mm; placing the ABS pipeline broken pieces in seawater (density 1.05 g/cm)3) In the tank, stirring for 20min at a stirring speed of 80r/min by adopting a stirring paddle, and collecting floated crushed ABS pipeline slices; transferring the ABS pipeline broken pieces subjected to seawater rinsing into a clear water tank, stirring for 10min at a stirring speed of 80r/min by using a stirring paddle, and collecting sunken ABS pipeline broken pieces; and putting the ABS pipeline broken pieces cleaned by the clean water into a cleaning dehydration dryer, setting the dehydration rotation speed to be 1500r/min and the drying temperature to be 70 ℃, and performing dehydration drying to obtain the pure regenerated ABS pipeline broken piece material.
Example 5
The only difference from example 1 is that in this example the tube was cooled to-35 ℃.
Example 6
The only difference from example 1 is that in this example the tube is cooled to-5 ℃.
Comparative example
The regenerated ABS material is obtained by crushing, desiliconizing, cleaning, rinsing and drying the material disclosed in Chinese patent (publication number: CN 105440563B).
Table 1: performance testing of recovered ABS regrind in examples 1-6 and comparative examples
Application example 1:
a regenerated ABS composite material comprises 100 parts of ABS regenerated material recovered in example 1, 1 part of functionalized multi-wall carbon nanotube composite material, 0.5 part of adsorbent (type: Evonik (winning) TEGO Sorb PY88TQ) and 10100.5 parts of antioxidant.
Application example 2:
a regenerated ABS composite material comprises 100 parts of the ABS regenerated material recovered in example 2, 5 parts of a functionalized multi-walled carbon nanotube composite material, 5 parts of an extracting agent (porous poly-encapsulated low-boiling-point volatile odor removal master batch, the model of which is LDV 2041) and 10765 parts of an antioxidant.
Application example 3:
a regenerated ABS composite material comprises 100 parts of ABS regenerated material recovered in example 3, 2 parts of functionalized multi-walled carbon nanotube composite material, 1 part of adsorbent, 1 part of extractant and 10101 parts of antioxidant.
Application example 4:
a regenerated ABS composite material comprises 100 parts of ABS regenerated material recovered in example 4, 3 parts of functionalized multi-wall carbon nanotube composite material, 2 parts of adsorbent (type: Evonik (winning) TEGO Sorb PY88TQ), and low-boiling-point volatile deodorizing master batch encapsulated in extractant porous polymer, wherein the type is as follows: 2 portions of LDV 2041), 10101 portions of antioxidant and 1681 portion of antioxidant.
Application example 5:
the only difference from application example 1 is that the recovered ABS reclaimed material from example 1 is replaced by the recovered ABS reclaimed material from example 5.
Application example 6:
the only difference from application example 1 is that the recovered ABS reclaimed material from example 1 is replaced by the recovered ABS reclaimed material from example 6.
Application comparative example 1
The difference from application example 1 is only that the recovered ABS reclaimed material of example 1 is replaced by the recovered ABS reclaimed material of comparative example.
Comparative application example 2
The difference from application example 1 is that the application comparative example does not contain the functionalized multi-wall carbon nanotube composite material and the adsorbent, namely only contains ABS reclaimed material and antioxidant.
Comparative application example 3
The difference from application example 1 is that the application comparative example does not contain the functionalized multi-wall carbon nanotube composite material, namely only contains ABS reclaimed material, adsorbent and antioxidant.
Application comparative example 4
The difference from application example 1 is that the application comparative example does not contain an adsorbent, namely only contains ABS reclaimed material, a functionalized multi-wall carbon nanotube composite material and an antioxidant.
The functionalized multi-walled carbon nanotube composite material in the application embodiment of the invention is prepared by the following steps:
s1, weighing 50-80 parts of AS resin powder and 20-50 parts of aminated multi-walled carbon nanotubes, respectively placing the AS resin powder and the aminated multi-walled carbon nanotubes in a chloroform solvent to prepare an AS solution and an aminated multi-walled carbon nanotube solution, wherein the solid-to-liquid ratio (mass) of the AS resin powder to the chloroform is 1:3, the solid-to-liquid ratio (mass) of the aminated multi-walled carbon nanotubes to the chloroform is 1:3, the aminated multi-walled carbon nanotubes are obtained by taking carboxylated carbon nanotubes AS an initiator, converting carboxyl into amide through amidation, and decarbonylating at high temperature, and have an outer diameter of 8-15 nm, an inner diameter of 2-4 nm, a length of 40-70 mu m and-NH2The content is more than or equal to 0.35 percent.
And S2, respectively carrying out ultrasonic treatment on the solutions prepared in the S1, and stirring the solutions for 2 hours by using magnetic force, then mixing the two solutions, carrying out ultrasonic treatment again, and stirring the two solutions for 2 hours by using magnetic force.
S3, placing the mixed solution finally prepared in the S2 in a solid-liquid separation device, heating a container for placing the solution at 70 ℃, evaporating and recycling chloroform, obtaining the AS/aminated multi-walled carbon nanotube composite material after the chloroform is evaporated, and cleaning, drying and grinding the AS/aminated multi-walled carbon nanotube composite material by using ethanol and clear water to prepare the functionalized multi-walled carbon nanotube composite material powder.
Table 2: performance testing of the recycled ABS composites of application examples 1-6 and application comparative examples 1-4.
The results show that the method for recovering the ABS reclaimed material firstly precools the ABS waste material at the temperature of-10 to-30 ℃, greatly reduces dust pollution and powder loss in the crushing process, and then adopts seawater for rinsing, so that the method is more environment-friendly and convenient compared with the method of adding NaCl into the conventional clear water; then cleaning with clear water, finally dehydrating and drying to obtain the ABS reclaimed material, wherein the recovery rate can reach more than 99 percent. The ABS reclaimed material obtained by the invention is added with a proper amount of the functionalized multi-walled carbon nanotube composite material to enhance the thermal stability of the ABS material, and meanwhile, the odor of the reclaimed ABS material is cooperatively controlled by matching with the odor removing agent, so that the ABS reclaimed material has better effect compared with the ABS material which is simply used.
The technical scope of the invention claimed by the embodiments herein is not exhaustive and new solutions formed by equivalent replacement of single or multiple technical features in the embodiments are also within the scope of the invention, and all parameters involved in the solutions of the invention do not have mutually exclusive combinations if not specifically stated.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
While the invention has been described in detail and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope thereof.
Claims (9)
1. The method for recycling the ABS reclaimed material is characterized by comprising the steps of classifying the ABS waste materials, pre-cooling, crushing into broken pieces, sequentially washing with seawater and clear water, and finally dehydrating and drying to obtain the ABS reclaimed material.
2. The method for recovering the ABS reclaimed material according to claim 1, wherein the temperature of the pre-cooling treatment is-10 to-30 ℃, and the time of the pre-cooling treatment is 5min to 60 min.
3. The method for recycling the ABS reclaimed material according to claim 1, wherein the pre-cooled ABS waste material is crushed into crushed pieces with the grain diameter less than or equal to 15 mm.
4. The method for recovering the ABS reclaimed material according to claim 1, wherein the crushed pieces are added into seawater to be stirred and cleaned, and the floated ABS material is collected, wherein the stirring and cleaning time is 1 to 30min, and the speed is 10 to 100 r/min.
5. The method for recovering ABS reclaimed material according to claim 1 or 4, wherein the density of seawater is 1.04g/cm3-1.07g/cm3。
6. The method for recovering the ABS reclaimed material as claimed in claim 1, wherein the ABS material collected after being washed with seawater is added with clean water, stirred and washed, and the settled ABS material is collected, wherein the washing time is 1-30 min, and the speed is 50r/min-150 r/min.
7. The method for recovering the ABS reclaimed material according to claim 1, wherein the ABS reclaimed material collected after being washed with clean water is dehydrated in a dehydrator and then dried in a drying barrel, the dehydration rotation speed is 1000-1800 r/min, and the drying temperature is set to 50-80 ℃.
8. An ABS regrind, characterized by being recovered by the recovery process of claim 1.
9. The recycled ABS composite material is characterized by comprising 100 parts of the ABS recycled material recycled by the recycling method in claim 1, 1-5 parts of a functionalized multi-wall carbon nanotube composite material and 0.5-5 parts of a deodorant.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114425829A (en) * | 2021-12-27 | 2022-05-03 | 界首市双特新材料科技有限公司 | Preparation method of modified ABS regenerated particles |
| WO2025109906A1 (en) * | 2023-11-22 | 2025-05-30 | テクノＵｍｇ株式会社 | Method for recovering resin component from plated resin member |
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Application publication date: 20210727 Assignee: Zhejiang Hi Carbon Cabin Network Technology Co.,Ltd. Assignor: Ningbo Jianfeng New Material Co.,Ltd. Contract record no.: X2023330000823 Denomination of invention: A Recycling Method for ABS Recycled Materials and the Obtained ABS Recycled Materials Granted publication date: 20230425 License type: Common License Record date: 20231107 |