CN111978657A - Recycling method of leftover materials of polyurethane and polyether - Google Patents
Recycling method of leftover materials of polyurethane and polyether Download PDFInfo
- Publication number
- CN111978657A CN111978657A CN202010801079.3A CN202010801079A CN111978657A CN 111978657 A CN111978657 A CN 111978657A CN 202010801079 A CN202010801079 A CN 202010801079A CN 111978657 A CN111978657 A CN 111978657A
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- CN
- China
- Prior art keywords
- polyurethane
- polyether
- leftover materials
- recycling
- materials
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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
- C08L27/00—Compositions 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; Compositions of derivatives of such polymers
- C08L27/02—Compositions 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; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions 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; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- 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
- C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
-
- 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
- C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
- C08J11/105—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with enzymes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
- C08L71/02—Polyalkylene oxides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
-
- 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
- C08J2371/00—Characterised by the use of polyethers obtained by reactions forming an ether link in the main chain; Derivatives of such polymers
- C08J2371/02—Polyalkylene oxides
-
- 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
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/20—Recycled plastic
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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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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
The invention discloses a method for recycling leftover materials of polyurethane and polyether, which comprises the following steps: (1) crushing the recovered polyurethane and polyether corner materials into crushing blocks with different sizes; (2) putting the crushed blocks into heating equipment for heating, adding the mixed material, and uniformly stirring to obtain a mixed raw material; (3) and putting the heated material into a mould, molding and curing to obtain a finished product. The preparation method is simple, the leftover materials are recycled, so that the leftover materials are changed into valuable, the polyurethane and polyether leftover materials are recycled, the problem of processing the leftover materials is solved, and the raw material sources are enriched and the environment is protected by recycling.
Description
Technical Field
The invention relates to the technical field of recovery methods, in particular to a method for recycling leftover materials of polyurethane and polyether.
Background
With the development of the times, PU including polyurethane and polyether is widely applied to markets, including the fields of transportation, building and synthetic leather, water conservancy, mining and metallurgy, national defense, sports and the like, however, with the wide application of polyurethane and polyether materials, a large amount of leftover materials are produced in industrial production, and waste polyurethane materials also become new and important pollution sources. Therefore, recycling of waste polyurethane materials is becoming more and more important both from the viewpoint of reducing resource consumption and from the viewpoint of preventing environmental pollution. The problem of waste disposal is also gradually obvious, some errors are inevitably generated in the production process, defective products are generated, and most users choose to discard the waste products, so that the environment is polluted.
Disclosure of Invention
The invention provides a method for recycling leftover materials of polyurethane and polyether, which aims to solve the problems in the prior art and comprises the following steps:
(1) crushing the recovered polyurethane and polyether corner materials into crushing blocks with different sizes;
(2) putting the crushed blocks into heating equipment for heating, adding the mixed material, and uniformly stirring to obtain a mixed raw material;
(3) and putting the heated material into a mould, molding and curing to obtain a finished product.
Further, a catalyst and an enzymolysis agent are added into the polyurethane and the polyether, and the polyurethane and the polyether are treated under the condition of heating.
Further, the heating equipment is an extruder, a stirring device is arranged in the extruder, the temperature of the extruder is controlled to be 100-200 ℃, and the crushed material is heated for 1-3 hours.
Further, the weight ratio of the catalyst to the enzymolysis agent is 1: 1.
further, the step (2) is that polyvinyl chloride is added into the crushed blocks according to a certain proportion for mixing, and the particles are supported by complete plasticization at a certain plasticizing temperature, and then the product is made by molding methods such as an injection molding machine.
By adopting the technical scheme, the method has the following beneficial effects:
the preparation method is simple, the polyurethane and polyether leftover materials are recycled, so that the leftover materials are changed into valuable, the leftover materials are recycled, the problem of processing the leftover materials is solved, the raw material sources are enriched through recycling, and the environment is protected.
Detailed Description
The present invention is further explained below.
Example 1: a recycling method of leftover materials of polyurethane and polyether comprises the following steps:
(1) crushing the recovered polyurethane and polyether corner materials into crushing blocks with different sizes;
(2) putting the crushed blocks into heating equipment for heating, adding the mixed material, and uniformly stirring to obtain a mixed raw material;
(3) and putting the heated material into a mould, molding and curing to obtain a finished product.
Adding a catalyst and an enzymolysis agent into the polyurethane and polyether material, wherein the weight ratio of the catalyst to the enzymolysis agent is 1: 1, processing under the condition of heating, wherein the heating equipment is a reaction kettle, a stirring device is arranged in the reaction kettle, the temperature of the reaction kettle is controlled at 100-200 ℃, and the crushed materials are heated for 1-3 hours.
Example 2: a recycling method of leftover materials of polyurethane and polyether comprises the following steps:
(1) crushing the recovered polyurethane and polyether corner materials into crushing blocks with different sizes;
(2) putting the crushed blocks into heating equipment for heating, adding the mixed material, and uniformly stirring to obtain a mixed raw material;
and adding a catalyst and an enzymolysis agent into the polyurethane and the polyether, and treating under the condition of heating.
The heating equipment is an extruder, a stirring device is arranged in the extruder, the temperature of the extruder is controlled to be 100-200 ℃, and the crushed material is heated for 1-3 hours. The weight ratio of the catalyst to the enzymolysis agent is 1: 1. and (3) crushing the mixture obtained in the step (2) into crushed blocks, adding polyvinyl chloride into the crushed blocks according to a certain proportion, mixing the crushed blocks, completely plasticizing the supported particles at a certain plasticizing temperature, and preparing the supported particles into a product by using an injection molding machine and other molding modes.
The preparation method is simple, the polyurethane and polyether leftover materials are recycled, so that the leftover materials are changed into valuable, the leftover materials are recycled, the problem of processing the leftover materials is solved, the raw material sources are enriched and the resources are saved by recycling.
Having thus described the basic principles and principal features of the invention, it will be appreciated by those skilled in the art that the invention is not limited by the embodiments described above, which are given by way of illustration only, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (5)
1. A method for recycling leftover materials of polyurethane and polyether is characterized by comprising the following steps:
(1) crushing the recovered corner materials into crushing blocks with different sizes;
(2) putting the crushed blocks into heating equipment for heating, adding the mixed material, and uniformly stirring to obtain a mixed raw material;
(3) and putting the heated material into a mould, molding and curing to obtain a finished product.
2. The method of claim 1, wherein the PU material is treated with the catalyst and the enzyme under heating.
3. The recycling method of polyurethane and polyether scraps as claimed in claim 1, wherein the heating device is an extruder, a stirring device is arranged in the extruder, the temperature of the extruder is controlled to be 100-200 ℃, and the crushed scraps are heated for 1-3 hours.
4. The method for recycling leftover materials of polyurethane and polyether, according to claim 1, wherein the weight ratio of the catalyst to the enzymolysis agent is 1: 1.
5. the recycling method of polyurethane and polyether leftover as claimed in claim 1, wherein the step (2) is crushing into pieces, mixing with polyvinyl chloride, plasticizing the supporting particles at a certain temperature, and forming into product by injection molding machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010801079.3A CN111978657A (en) | 2020-08-11 | 2020-08-11 | Recycling method of leftover materials of polyurethane and polyether |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010801079.3A CN111978657A (en) | 2020-08-11 | 2020-08-11 | Recycling method of leftover materials of polyurethane and polyether |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111978657A true CN111978657A (en) | 2020-11-24 |
Family
ID=73433834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010801079.3A Withdrawn CN111978657A (en) | 2020-08-11 | 2020-08-11 | Recycling method of leftover materials of polyurethane and polyether |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111978657A (en) |
-
2020
- 2020-08-11 CN CN202010801079.3A patent/CN111978657A/en not_active Withdrawn
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20201124 |
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| WW01 | Invention patent application withdrawn after publication |