CN111363194A - Separating liquid for recovering rubber and application thereof - Google Patents
Separating liquid for recovering rubber and application thereof Download PDFInfo
- Publication number
- CN111363194A CN111363194A CN202010186132.3A CN202010186132A CN111363194A CN 111363194 A CN111363194 A CN 111363194A CN 202010186132 A CN202010186132 A CN 202010186132A CN 111363194 A CN111363194 A CN 111363194A
- Authority
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- China
- Prior art keywords
- sole
- rubber
- separation liquid
- vamp
- glycol
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 34
- 239000005060 rubber Substances 0.000 title claims abstract description 34
- 239000007788 liquid Substances 0.000 title claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims abstract description 41
- 238000000926 separation method Methods 0.000 claims abstract description 30
- 239000000853 adhesive Substances 0.000 claims abstract description 18
- 230000001070 adhesive effect Effects 0.000 claims abstract description 18
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 12
- 150000001875 compounds Chemical class 0.000 claims abstract description 11
- 238000011084 recovery Methods 0.000 claims abstract description 4
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 45
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 39
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 21
- 238000001816 cooling Methods 0.000 claims description 16
- DNIAPMSPPWPWGF-UHFFFAOYSA-N monopropylene glycol Natural products CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 11
- YPFDHNVEDLHUCE-UHFFFAOYSA-N 1,3-propanediol Substances OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 239000002202 Polyethylene glycol Substances 0.000 claims description 9
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 9
- 229920001223 polyethylene glycol Polymers 0.000 claims description 9
- 229960004063 propylene glycol Drugs 0.000 claims description 9
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 claims description 7
- DNIAPMSPPWPWGF-VKHMYHEASA-N (+)-propylene glycol Chemical compound C[C@H](O)CO DNIAPMSPPWPWGF-VKHMYHEASA-N 0.000 claims description 4
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 claims description 4
- 229940035437 1,3-propanediol Drugs 0.000 claims description 4
- 239000004677 Nylon Substances 0.000 claims description 4
- 229940093476 ethylene glycol Drugs 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- 229920000166 polytrimethylene carbonate Polymers 0.000 claims description 4
- 235000013772 propylene glycol Nutrition 0.000 claims description 4
- 238000004064 recycling Methods 0.000 claims description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 3
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 3
- 241001330002 Bambuseae Species 0.000 claims description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 3
- 239000011425 bamboo Substances 0.000 claims description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 229920002396 Polyurea Polymers 0.000 claims description 2
- 239000003610 charcoal Substances 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims description 2
- 229960005150 glycerol Drugs 0.000 claims description 2
- 229940059574 pentaerithrityl Drugs 0.000 claims description 2
- 229920000058 polyacrylate Polymers 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- 229920002635 polyurethane Polymers 0.000 claims description 2
- 239000004814 polyurethane Substances 0.000 claims description 2
- 241000251468 Actinopterygii Species 0.000 claims 1
- 229920006332 epoxy adhesive Polymers 0.000 claims 1
- 229920000297 Rayon Polymers 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 43
- 239000010935 stainless steel Substances 0.000 description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 238000004140 cleaning Methods 0.000 description 13
- 238000003756 stirring Methods 0.000 description 13
- 241000269978 Pleuronectiformes Species 0.000 description 7
- 238000010907 mechanical stirring Methods 0.000 description 3
- 229920003051 synthetic elastomer Polymers 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000010985 leather Substances 0.000 description 2
- 229920003052 natural elastomer Polymers 0.000 description 2
- 229920001194 natural rubber Polymers 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 239000005061 synthetic rubber Substances 0.000 description 2
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 241000028631 Microstomus pacificus Species 0.000 description 1
- 241000168254 Siro Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- C08J2321/00—Characterised by the use of unspecified rubbers
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
The invention belongs to the field of waste recovery, and particularly discloses a separating liquid for recovering rubber, which at least comprises two compounds containing hydroxyl; the number of hydroxyl-containing groups of the compound is 2-4. The invention also discloses application of the separating liquid, wherein the separating liquid is used for separating rubber soles and vamps, and at least two compounds containing hydroxyl groups are adopted, and the number of the hydroxyl groups in the compounds is 2-4, so that the viscose performance of the adhesive between the soles and the vamps can be relieved under the heating condition, the rubber soles and the vamps can be effectively separated, the discarded rubber-containing shoes can be recycled, a large number of resources can be saved, and the manufacturing cost of the shoes can be reduced. Meanwhile, the separation method has the advantages of convenience and rapidness in operation, low cost, environmental friendliness, large labor saving and the like.
Description
Technical Field
The invention belongs to the field of waste recovery, and particularly relates to a separating liquid for recovering rubber and application thereof.
Background
Shoes have a long history of development. Approximately 5000 years ago in the yangshao culture period, the most primitive shoe made of hide appeared. Shoes are a tool for protecting feet of people from being injured. At first, in order to overcome special conditions and prevent feet from being difficult or injured, fur shoes are invented. Nowadays, shoes with various styles and functions are seen everywhere, and everyone has various shoes. According to the application, the shoes comprise daily shoes, labor protection shoes, sports shoes, travel shoes, heel-supporting shoes, heightening shoes, rain shoes, skateboard shoes, skating shoes, dance shoes and the like.
Shoes generally comprise an upper and a sole connected thereto, the sole being of complex and varied construction, in the narrow sense, only referred to as an outsole. In most cases, the sole may comprise all of the materials forming the sole, such as the outsole, the midsole, and the heel. Common properties required by common sole materials include wear resistance, water resistance, oil resistance, heat resistance, pressure resistance, impact resistance, good elasticity, easy adaptation to foot shapes, difficult deformation after shaping, heat preservation, easy moisture absorption and the like. The sole materials are of various types and can be divided into natural base materials and synthetic base materials. The natural bottom materials comprise natural bottom leather, bamboo, wood and the like, and the synthetic bottom materials comprise rubber, plastics, rubber and plastic combined materials, regenerated leather, elastic hardboard and the like.
Shoes have a certain life span and are discarded when damaged or worn. After the existing shoes are scrapped, few people can recycle the shoes, so that the environment is polluted, and a large amount of resources are wasted. More importantly, to recycle the shoe, the sole and the vamp of the shoe must be separated and used separately. Particularly, the recycling of the rubber of the shoes with rubber soles has important significance, but no good separation method is available at present.
Therefore, it is desirable to provide a separation liquid for recycling rubber, which can effectively separate an upper from a rubber sole and recycle rubber.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art described above. Therefore, the invention provides the separation liquid which can effectively separate the vamp from the sole and recycle rubber.
A separation liquid, comprising at least two compounds containing hydroxyl groups, wherein the number of the compounds containing hydroxyl groups is 2-4.
Preferably, the separation liquid comprises at least two of polyethylene glycol, diethylene glycol, triethylene glycol, ethylene glycol, glycerol, pentaerythritol, 1, 3-propanediol, or 1, 2-propanediol.
Further preferably, the separation liquid comprises at least one of polyethylene glycol, diethylene glycol, triethylene glycol, ethylene glycol, 1, 3-propanediol, or 1, 2-propanediol.
More preferably, the separation liquid consists of the following components in parts by weight:
at least one of diethylene glycol, triethylene glycol, ethylene glycol, glycerol, pentaerythritol, 1, 3-propylene glycol and 1, 2-propylene glycol is different from 0 in parts by weight.
Preferably, the molecular weight of the polyethylene glycol is 200-.
The use of the separation liquid in rubber recovery.
The use of the separation liquid for recycling rubber in shoe uppers and shoe soles.
A method for separating a rubber sole from a vamp comprises the following steps:
and soaking the shoes with the rubber soles in the separation liquid, heating, cooling and taking out the vamps and the soles.
Preferably, the heating temperature is 40-200 ℃, and the heating time is 10-1200 min; further preferably, the heating temperature is 80-180 ℃, and the heating time is 10-90 min.
Preferably, the rubber in the shoe is natural and/or artificial rubber.
Preferably, the vamp material of the shoe is one or more of PET (polyethylene terephthalate), polyester thermal fuse, nylon thermal fuse, elastic thread, full extinction yarn, nylon fishing thread, bamboo charcoal fiber, cool yarn, AB yarn (a composite thread made by siro spinning craftsman) and high-elastic thread.
Preferably, the sole and the upper of the shoe are bonded by an adhesive. The adhesive is at least one of epoxy resin adhesive, polyurethane adhesive, polyurea adhesive, polyacrylate adhesive or polyacrylic adhesive.
Specifically, the method for separating the rubber sole from the vamp comprises the following steps:
soaking the discarded shoes with rubber soles in the separation liquid, heating to 40-200 deg.C, and maintaining for 10-1200 min. Then the vamp and the sole are automatically separated, if the separation is not good, simple mechanical stirring is carried out, then the vamp and the sole are cooled to 15-35 ℃, and the vamp and the sole are taken out, washed by tap water and dried.
In the separation method, the separation liquid can be recycled.
The rubber includes natural rubber and synthetic rubber, and the synthetic rubber, such as butyl rubber, high styrene butadiene rubber, ethylene propylene rubber, polybutadiene rubber, etc., all have corresponding softening temperatures. The method comprises the steps of adopting at least two hydroxyl-containing compounds, wherein the number of hydroxyl-containing compounds is 2-4, under the condition of heating, the separating liquid acts on an adhesive between a sole and a vamp, the viscose performance of the adhesive is relieved, the gradually softened rubber is not adhered to the vamp any more, separation is realized, and then the rubber sole and the vamp are respectively recovered after cooling.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention adopts the separating liquid which at least comprises two compounds containing hydroxyl groups, wherein the number of the hydroxyl groups is 2-4, so that the adhesive performance of the adhesive between the sole and the vamp can be relieved under the heating condition, the rubber sole and the vamp can be effectively separated, the discarded rubber-containing shoes can be recycled, a large amount of resources can be saved, and the manufacturing cost of the shoes can be reduced.
(2) The separation method has the advantages of convenience and rapidness in operation, low cost, environmental friendliness, large labor saving and the like.
Detailed Description
In order to make the technical solutions of the present invention more apparent to those skilled in the art, the following examples are given for illustration. It should be noted that the following examples are not intended to limit the scope of the claimed invention.
Example 1
30 kg of scrapped rubber-sole sports shoes are added into a 100L stainless steel kettle with a heating device, and then 20L of pentaerythritol/1, 3-propylene glycol (volume ratio is 1:1) is added. Heating the stainless steel kettle to 150 ℃, maintaining the temperature for 10 minutes, and enabling the sole and the vamp to automatically fall off, if the sole and the vamp do not fall off, mechanically stirring for several times. Cooling the stainless steel kettle to room temperature, taking out the vamp and the sole, and cleaning with water.
Example 2
30 kg of scrapped rubber-sole sports shoes are added into a 100L stainless steel kettle with a heating device, and then 20L of polyethylene glycol/diethylene glycol (volume ratio is 1:1) is added. Heating the stainless steel kettle to 150 ℃, maintaining the temperature for 10 minutes, and enabling the sole and the vamp to automatically fall off, if the sole and the vamp do not fall off, mechanically stirring for several times. Cooling the stainless steel kettle to room temperature, taking out the vamp and the sole, and cleaning with water.
Example 3
30 kg of scrapped rubber-sole sports shoes are added into a 100L stainless steel kettle with a heating device, and then 20L of polyethylene glycol/diethylene glycol (volume ratio is 1:1) is added. Heating the stainless steel kettle to 180 ℃, maintaining the temperature for 10 minutes, and enabling the sole and the vamp to automatically fall off, if the sole and the vamp do not fall off, mechanically stirring for several times. Cooling the stainless steel kettle to room temperature, taking out the vamp and the sole, and cleaning with water.
Example 4
30 kg of discarded rubber-soled sports shoes are added into a 100 l stainless steel kettle with a heating device, and then 20 l of ethylene glycol/glycerol (volume ratio is 1:1) is added. Heating the stainless steel kettle to 150 ℃, maintaining the temperature for 10 minutes, and enabling the sole and the vamp to automatically fall off, if the sole and the vamp do not fall off, mechanically stirring for several times. Cooling the stainless steel kettle to room temperature, taking out the vamp and the sole, and cleaning with water.
Example 5
30 kg of scrapped rubber-sole sports shoes are added into a 100 l stainless steel kettle with a heating device, and then 20 l of polyethylene glycol (molecular weight 800)/pentaerythritol (volume ratio 1:1) is added. Heating the stainless steel kettle to 150 ℃, maintaining the temperature for 10 minutes, and enabling the sole and the vamp to automatically fall off, if the sole and the vamp do not fall off, mechanically stirring for several times. Cooling the stainless steel kettle to room temperature, taking out the vamp and the sole, and cleaning with water.
Example 6
30 kg of scrapped rubber-sole sports shoes are added into a 100L stainless steel kettle with a heating device, and then 10L of pentaerythritol and 10L of glycerol are added. Heating the stainless steel kettle to 150 ℃, maintaining the temperature for 10 minutes, and enabling the sole and the vamp to automatically fall off, if the sole and the vamp do not fall off, mechanically stirring for several times. Cooling the stainless steel kettle to room temperature, taking out the vamp and the sole, and cleaning with water.
Example 7
30 kg of discarded rubber-soled sports shoes are added into a 100L stainless steel kettle with a heating device, and then 10L of ethylene glycol and 10L of diethylene glycol are added. Heating the stainless steel kettle to 120 ℃, maintaining the temperature for 30 minutes, and enabling the sole and the vamp to automatically fall off, if the sole and the vamp do not fall off, mechanically stirring for several times. Cooling the stainless steel kettle to room temperature, taking out the vamp and the sole, and cleaning with water.
Example 8
30 kg of discarded rubber-soled sports shoes are added into a 100L stainless steel kettle with a heating device, and then 10L of ethylene glycol and 10L of diethylene glycol are added. Heating the stainless steel kettle to 90 ℃, maintaining the temperature for 60 minutes, and enabling the sole and the vamp to automatically fall off, if the sole and the vamp do not fall off, mechanically stirring for several times. Cooling the stainless steel kettle to room temperature, taking out the vamp and the sole, and cleaning with water.
Example 9
30 kg of discarded rubber-soled sports shoes are added into a 100L stainless steel kettle with a heating device, and then 10L of ethylene glycol and 10L of diethylene glycol are added. Heating the stainless steel kettle to 60 ℃, maintaining the temperature for 600 minutes, and enabling the sole and the vamp to automatically fall off, if the sole and the vamp do not fall off, mechanically stirring for several times. Cooling the stainless steel kettle to room temperature, taking out the vamp and the sole, and cleaning with water.
Example 10
30 kg of discarded rubber-soled sports shoes are added into a 100L stainless steel kettle with a heating device, and then 18L of ethylene glycol and 2L of diethylene glycol are added. Heating the stainless steel kettle to 150 ℃, maintaining the temperature for 15 minutes, and enabling the sole and the vamp to automatically fall off, if the sole and the vamp do not fall off, mechanically stirring for several times. Cooling the stainless steel kettle to room temperature, taking out the vamp and the sole, and cleaning with water.
Example 11
30 kg of scrapped rubber-sole sports shoes are added into a 100L stainless steel kettle with a heating device, and then 10L of ethylene glycol, 4L of diethylene glycol and 6L of glycerol are added. Heating the stainless steel kettle to 120 ℃, maintaining the temperature for 20 minutes, and enabling the sole and the vamp to automatically fall off, if the sole and the vamp do not fall off, mechanically stirring for several times. Cooling the stainless steel kettle to room temperature, taking out the vamp and the sole, and cleaning with water.
Example 12
30 kg of discarded sneakers with rubber soles are added into a 100L stainless steel kettle with a heating device, and then 8L1, 2-propylene glycol, 6L diethylene glycol and 6L pentaerythritol are added. Heating the stainless steel kettle to 120 ℃, maintaining the temperature for 20 minutes, and enabling the sole and the vamp to automatically fall off, if the sole and the vamp do not fall off, mechanically stirring for several times. Cooling the stainless steel kettle to room temperature, taking out the vamp and the sole, and cleaning with water.
Example 13
30 kg of discarded sneakers with rubber soles are added into a 100L stainless steel kettle with a heating device, and then 3L1, 2-propylene glycol, 6L diethylene glycol, 2L triethylene glycol, 3L1, 3-propylene glycol and 6L pentaerythritol are added. Heating the stainless steel kettle to 120 ℃, maintaining the temperature for 20 minutes, and enabling the sole and the vamp to automatically fall off, if the sole and the vamp do not fall off, mechanically stirring for several times. Cooling the stainless steel kettle to room temperature, taking out the vamp and the sole, and cleaning with water.
Comparative example 1
30 kg of scrapped rubber-sole sports shoes are added into a 100L stainless steel kettle with a heating device, and then 20L of polyethylene glycol (molecular weight 800)/ethanol (volume ratio is 1:1) is added. The stainless steel kettle is heated to 40 ℃, the temperature is maintained for 1200 minutes, the sole and the vamp can not fall off, and the sole and the vamp can still not be separated by mechanical stirring.
Comparative example 2
30 kg of discarded rubber-soled sports shoes are added into a 100L stainless steel kettle with a heating device, and then 10L of ethylene glycol and 10L of pentadiol are added. Heating the stainless steel kettle to 150 ℃, maintaining the temperature for 1200 minutes, wherein the sole and the vamp can not fall off and can still not be separated by mechanical stirring.
Claims (10)
1. A separation liquid for recovering rubber, characterized in that the separation liquid comprises at least two compounds containing hydroxyl groups; the number of hydroxyl-containing groups of the compound is 2-4.
2. The separation liquid according to claim 1, comprising at least two of polyethylene glycol, diethylene glycol, triethylene glycol, ethylene glycol, glycerol, pentaerythritol, 1, 3-propanediol, or 1, 2-propanediol.
3. The separation liquid of claim 2, wherein the separation liquid comprises at least one of polyethylene glycol, diethylene glycol, triethylene glycol, ethylene glycol, 1, 3-propanediol, or 1, 2-propanediol.
4. The separation liquid according to claim 3, wherein the separation liquid consists of the following components in parts by weight:
at least one of diethylene glycol, triethylene glycol, ethylene glycol, glycerol, pentaerythritol, 1, 3-propylene glycol and 1, 2-propylene glycol is different from 0 in parts by weight.
5. Use of a separation liquid according to any one of claims 2 to 4 for the recovery of rubber.
6. Use of a separation liquid according to any of claims 2 to 4 for recycling rubber in shoe uppers and shoe soles.
7. A method for separating a rubber sole from a vamp is characterized by comprising the following steps:
soaking a shoe having a rubber sole in the separation liquid according to any one of claims 2 to 4, heating, cooling, and taking out the upper and the sole.
8. The separation method according to claim 7, wherein the heating temperature is 40-200 ℃ and the heating time is 10-1200 min.
9. The separation method according to claim 7, wherein the shoe upper material is one or more of PET, polyester thermal fuse, nylon thermal fuse, elastic thread, fully dull thread, nylon fish silk thread, bamboo charcoal fiber, cool silk or AB yarn.
10. The separation method according to claim 7, wherein the sole and the upper of the shoe are bonded by an adhesive, and the adhesive is at least one of an epoxy adhesive, a polyurethane adhesive, a polyurea adhesive, a polyacrylate adhesive, or a polyacrylic adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010186132.3A CN111363194A (en) | 2020-03-17 | 2020-03-17 | Separating liquid for recovering rubber and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010186132.3A CN111363194A (en) | 2020-03-17 | 2020-03-17 | Separating liquid for recovering rubber and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111363194A true CN111363194A (en) | 2020-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010186132.3A Pending CN111363194A (en) | 2020-03-17 | 2020-03-17 | Separating liquid for recovering rubber and application thereof |
Country Status (1)
| Country | Link |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008221150A (en) * | 2007-03-14 | 2008-09-25 | Toshio Kimura | Peeling method of metal and rubber |
| CN103374145A (en) * | 2013-03-21 | 2013-10-30 | 佛山市高明区业晟聚氨酯有限公司 | Recovery process of polyurethane waste |
| WO2014098229A1 (en) * | 2012-12-20 | 2014-06-26 | アースリサイクル株式会社 | Method for separation and recovery of plastic-based composite waste |
| CN107858133A (en) * | 2017-11-10 | 2018-03-30 | 深圳市新纶科技股份有限公司 | A kind of polyurethane adhesive and preparation method thereof |
| CN207325559U (en) * | 2017-06-06 | 2018-05-08 | 温岭市太平高级职业中学 | One kind scraps footwear sole vamp separator |
-
2020
- 2020-03-17 CN CN202010186132.3A patent/CN111363194A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008221150A (en) * | 2007-03-14 | 2008-09-25 | Toshio Kimura | Peeling method of metal and rubber |
| WO2014098229A1 (en) * | 2012-12-20 | 2014-06-26 | アースリサイクル株式会社 | Method for separation and recovery of plastic-based composite waste |
| CN103374145A (en) * | 2013-03-21 | 2013-10-30 | 佛山市高明区业晟聚氨酯有限公司 | Recovery process of polyurethane waste |
| CN207325559U (en) * | 2017-06-06 | 2018-05-08 | 温岭市太平高级职业中学 | One kind scraps footwear sole vamp separator |
| CN107858133A (en) * | 2017-11-10 | 2018-03-30 | 深圳市新纶科技股份有限公司 | A kind of polyurethane adhesive and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| G.厄特尔: "《聚氨酯手册》", 30 September 1992, 中国石油出版社 * |
| 刘伟: "《废旧塑料回收利用技术创新发展研究》", 30 September 2018, 科学技术文献出版社 * |
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Application publication date: 20200703 |