CN105058620A - Separation method for polyurethane and nylon mixed powder and application of separation method - Google Patents
Separation method for polyurethane and nylon mixed powder and application of separation method Download PDFInfo
- Publication number
- CN105058620A CN105058620A CN201510482783.6A CN201510482783A CN105058620A CN 105058620 A CN105058620 A CN 105058620A CN 201510482783 A CN201510482783 A CN 201510482783A CN 105058620 A CN105058620 A CN 105058620A
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- CN
- China
- Prior art keywords
- polyurethane
- separation method
- mixed powder
- nylon
- powder
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- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Abstract
The invention provides a separation method for polyurethane and nylon mixed powder. At the normal temperature, the mixed powder is put into a container, and then a full dose of solvent is added into the container for sufficiently dissolving powder A; then, filtering is performed, a filtrate and filter residues are collected respectively, and the solvent in the filtrate is removed to obtain the powder A; and after the filter residues are dried, powder B is obtained. According to the method, the technology is simple, operation is convenient, waste generated in the industry of artificial leather is separated and then recycled, the production cost is lowered, resources are recycled, and meanwhile the environment pollution is lowered.
Description
Technical field
The present invention relates to compound separation field, be specifically related to the separation method of a kind of polyurethane and nylon mixed powder.
Background technology
In current domestic artificial leather industry, about there are four kilotons every year because grinding polyurethane and the nylon mixing waste of skin generation.Because the fusing point temperature difference of nylon and polyurethane is larger, as carried out injection molding together, because nylon fusing point is higher, polyurethane can produce coking phenomenon, therefore value is very low, nylon and polyurethane waste material are directly transferred to fixed-end forces company landfill or burning disposal by some producers, cause the waste of resource and the severe contamination to environment.
Contain nylon (60%), polyurethane (40%) in polyurethane and nylon mixing scrap waste material, scrap has very high value after Component seperation.
Summary of the invention
The invention provides the separation method of a kind of polyurethane and nylon mixed powder, the inventive method is simple to operate, energy consumption is low, is separated very thorough.
The technical solution used in the present invention is:
The separation method of a kind of polyurethane and nylon mixed powder, it is characterized in that: at normal temperatures, mixed powder is dropped into container, then in container, add enough solvents, fully dissolve powder A, then filter, collect filtrate and filter residue respectively, remove the solvent in filtrate, obtain powder A wherein, after filter residue and drying, obtain another kind of powder material B.
Described a kind of polyurethane and the separation method of nylon mixed powder, is characterized in that: described solvent is can dissolve polyurethane and do not dissolve the solvent of nylon.
Described a kind of polyurethane and the separation method of nylon mixed powder, is characterized in that: described solvent is the solvent that can dissolve nylon and non-dissolve polyurethane.
Described a kind of polyurethane and the separation method of nylon mixed powder, is characterized in that: described solvent is the mixing of the one or both in DMF, DMAC.
Described polyurethane is being separated the application in the waste material produced in artificial leather industry with the separation method of nylon mixed powder, after the waste material produced can being separated, recycles in artificial leather industry.
Beneficial effect of the present invention
The inventive method technique is simple, easy to operate, can reuse after the waste material produced in artificial leather industry is separated as injection raw material, be separated one ton of waste material and can be worth 15000 yuan, reduce production cost, achieve the Recycling of resource, reduce environmental pollution simultaneously.
Detailed description of the invention
A separation method for polyurethane and nylon mixed powder, concrete operations are as follows:
At normal temperatures, the mixed powder of 100kg is dropped in vacuum reaction still, then in reactor, adds 200kg solvent DMF, stir 40-50 minute, abundant dissolve polyurethane, then releases mixed material, use filter print filters, will the DMF solution press filtration of polyurethane be dissolved with out; Dissolving, press filtration, obtain purer nylon powder, then remove remaining DMF with vacuum drier repeatedly, the DMF of removal carried out cooling and collect, obtain highly purified nylon powder; DMF solution containing higher polyurethane is utilized again as the raw material of dermatine wet method impregnation, containing then again dissolving mixed-powder as solvent compared with the DMF solution of oligourethane, achieve the effect that scrap loop utilizes, decrease waste discharge, reduce the pollution of environment.
Claims (5)
1. the separation method of a polyurethane and nylon mixed powder, it is characterized in that: at normal temperatures, mixed powder is dropped into container, then in container, add enough solvents, fully dissolve powder A, then filter, collect filtrate and filter residue respectively, remove the solvent in filtrate, obtain powder A wherein, after filter residue and drying, obtain another kind of powder material B.
2. the separation method of a kind of polyurethane according to claim 1 and nylon mixed powder, is characterized in that: described solvent is can dissolve polyurethane and do not dissolve the solvent of nylon.
3. the separation method of a kind of polyurethane according to claim 1 and nylon mixed powder, is characterized in that: described solvent is the solvent that can dissolve nylon and non-dissolve polyurethane.
4. the separation method of a kind of polyurethane according to claim 1 and nylon mixed powder, is characterized in that: described solvent is the mixing of the one or both in DMF, DMAC.
5. a polyurethane as claimed in claim 1 is being separated the application in the waste material produced in artificial leather industry with the separation method of nylon mixed powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510482783.6A CN105058620A (en) | 2015-08-10 | 2015-08-10 | Separation method for polyurethane and nylon mixed powder and application of separation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510482783.6A CN105058620A (en) | 2015-08-10 | 2015-08-10 | Separation method for polyurethane and nylon mixed powder and application of separation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105058620A true CN105058620A (en) | 2015-11-18 |
Family
ID=54488241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510482783.6A Pending CN105058620A (en) | 2015-08-10 | 2015-08-10 | Separation method for polyurethane and nylon mixed powder and application of separation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105058620A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105461954A (en) * | 2015-12-10 | 2016-04-06 | 深圳市万达杰塑料制品有限公司 | Method for recycling nylon/polyolefin composite membrane waste materials |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030119925A1 (en) * | 2000-03-23 | 2003-06-26 | Bernard Vandenhende | Method for recycling a plastic material |
| 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 |
| CN103159979A (en) * | 2013-04-10 | 2013-06-19 | 中南大学 | Separating and recovering method of ABS/PS (Acrylonitrile Butadiene Styrene/Poly Styrene) waste plastic |
-
2015
- 2015-08-10 CN CN201510482783.6A patent/CN105058620A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030119925A1 (en) * | 2000-03-23 | 2003-06-26 | Bernard Vandenhende | Method for recycling a plastic material |
| 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 |
| CN103159979A (en) * | 2013-04-10 | 2013-06-19 | 中南大学 | Separating and recovering method of ABS/PS (Acrylonitrile Butadiene Styrene/Poly Styrene) waste plastic |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105461954A (en) * | 2015-12-10 | 2016-04-06 | 深圳市万达杰塑料制品有限公司 | Method for recycling nylon/polyolefin composite membrane waste materials |
| CN105461954B (en) * | 2015-12-10 | 2018-10-02 | 深圳万达杰环保新材料股份有限公司 | A kind of recovery method of nylon/polyolefin composite membrane waste material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151118 |
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| RJ01 | Rejection of invention patent application after publication |