CN113427654A - High-value and high-efficiency development technical method for nonmetal powder of waste cables - Google Patents
High-value and high-efficiency development technical method for nonmetal powder of waste cables Download PDFInfo
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- CN113427654A CN113427654A CN202110616177.4A CN202110616177A CN113427654A CN 113427654 A CN113427654 A CN 113427654A CN 202110616177 A CN202110616177 A CN 202110616177A CN 113427654 A CN113427654 A CN 113427654A
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- polydicyclopentadiene
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- nonmetal powder
- waste cable
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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
- B29B7/00—Mixing; Kneading
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/154—Coating solid articles, i.e. non-hollow articles
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- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention discloses a high-value and high-efficiency development technical method for nonmetal powder of a waste cable, which comprises the following steps: the method comprises the following steps: adding a part of waste cable nonmetal powder into a raw material for preparing polydicyclopentadiene resin as an auxiliary material, and preparing polydicyclopentadiene by adopting a single-component polydicyclopentadiene mixing device; step two: the single-component polydicyclopentadiene preparation mixing device is connected with a plunger pump by adopting a proportion measuring scale and matched with a circular proportion regulator; step three: the polydicyclopentadiene heat-preservation pipe adopts dicyclopentadiene resin (DCPD) to prepare an inner shell and an outer shell, the invention can effectively increase the utilization of the nonmetal powder of the waste cable and increase the resource recycling, and the polydicyclopentadiene and the high-efficiency polydicyclopentadiene heat-preservation pipe are prepared by a novel single-component mixing device, thereby realizing the high-value utilization of the nonmetal powder resource of the waste cable, further developing the domestic market and improving the enterprise benefits.
Description
Technical Field
The invention relates to the field of high-value and high-efficiency development of non-metal powder, in particular to a high-value and high-efficiency development technical method of waste cable non-metal powder.
Background
The wire and cable is a wire product for transmitting electric (magnetic) energy, transmitting information and realizing electromagnetic energy conversion, is widely applied to various fields of national economy, and is similar to blood vessels and nerves of national economy. The manufacturing industry of electric wires and cables is one of the largest matching industries in national economy, and is the second largest industry in the mechanical industry, which is second to the automobile industry. Annual output of main varieties in five major cable products in China is mainly as follows: about 150 million tons of various overhead conductors (including insulated overhead cables); high and extra high voltage cables (66KV and above) are about 1.5 kilometres; medium voltage power cables are about 48 kilometres (calculated on a single core); about 2 hundred million core kilometers for each fiber optic cable; the income of various winding wires is about 160 ten thousand tons in 2016, the income of the wire and cable manufacturing industry in China reaches 13,133 million yuan, the composite growth rate of five years (2016-. China is a country with relatively scarce resources, along with the rapid development of economy, the demand of mineral resources is increased rapidly, so that most mineral resources need to be imported, and because of huge market demand expectation and huge monopoly of mining industry, internationally related mineral resources are high, the production cost of products in China is raised to a certain extent, and the market competitiveness of the products is weakened. The waste cable mainly contains copper metal and rubber, has huge recycling value, and can reduce the resource import dependence rate of China to a certain extent. In addition, along with the gradual improvement of environmental protection consciousness of people, the environmental protection policy of wastes is improved, the environmental protection standard is gradually improved, and the efficient environmental protection recovery treatment of the waste cables becomes the inevitable choice for green sustainable development. The heat preservation pipe is an important factor influencing energy conservation, and the development and the application of the heat preservation pipe are more and more generally paid attention by countries in the world.
At present, the industry of the wire and the cable in China develops rapidly, and various cable products including high-voltage cables, mining communication cables and mining control cables exist. Along with the shorter and shorter updating period of products, a large amount of waste wires and cables are generated; the waste electric wire and cable generally refers to the discarded electric wire and cable which can not be used or can be burnt and damaged by flowing of high current and voltage and can not be used due to mistake in production and processing. The abandoned electric wire and cable mainly comprises an internal copper core, an external insulation layer and a protective layer, and has high content and purity of metal copper and considerable recycling value. In order to protect the environment and save energy, the metal conductors in the waste electric wires and cables are generally recycled at present. The waste cable nonmetal comprises cable insulation and protective layer skin, and is generally mixed with auxiliary materials, softening agents, filling agents or coloring agents according to a certain proportion after being cleaned, dried and crushed at present, and then the mixture is kneaded and extruded into qualified plastic strips or particles in an extruder, so that cable fillers, building pipes, low-voltage electric appliance accessories, civil appliances and the like can be manufactured. In order to adapt to the market development trend, the high-value and high-efficiency development and utilization technology of the nonmetal powder of the waste cable is adopted.
Disclosure of Invention
The invention aims to provide a high-value and high-efficiency development technical method for waste cable non-metal powder, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a high-value and high-efficiency development technical method for waste cable non-metal powder comprises the following steps:
the method comprises the following steps: adding a part of waste cable nonmetal powder into a raw material for preparing polydicyclopentadiene resin as an auxiliary material, and preparing polydicyclopentadiene by adopting a single-component polydicyclopentadiene mixing device;
step two: the single-component preparation polydicyclopentadiene mixing device adopts a proportion measuring scale to connect a plunger pump, and is matched with a circular proportion regulator to jointly form a lever type plunger pump, so that main and auxiliary materials with large proportion difference can be accurately injected, and the main and auxiliary materials with large proportion difference can be uniformly mixed by matching with a screw type mixer;
step three: the polydicyclopentadiene heat-preservation pipe adopts dicyclopentadiene resin (DCPD) to prepare an inner shell and an outer shell, and the foamed DCPD is used as a filling layer and is used as a recycling result of the nonmetal powder of the waste cable.
Preferably, the density of the polydicyclopentadiene is 1.04g/cm3, the polydicyclopentadiene can resist common acid, alkali and organic solvent, the flexural modulus is 1790-2070 MPa, the tensile strength is 34MPa, and the heat distortion temperature is 185.5 ℃.
Preferably, the screw type mixer can be mixed according to a preset proportion when working, and the mixture is automatically converted into a rotating speed through the conditions set by the full-digital microcomputer control system to directly drive the precision screw to extrude the raw material, and the error value is not higher than +/-1%.
Preferably, the dicyclopentadiene thermal insulation pipe prepared in the third step adopts dicyclopentadiene resin (DCPD) to prepare a shell formed by an inner part and an outer part, and a foaming layer of a filling layer adopts the same base material, so that the bonding strength is high, the thermal expansion coefficients are the same, an extra adhesive layer is avoided between layers, and the performance reduction of the pipe caused by the failure of the adhesive and the thermal expansion deformation in long-time use is prevented.
Preferably, the prepared pipe has the characteristics of high strength, light weight, heat preservation and high temperature resistance, wherein the heat conductivity coefficient is as follows: not more than 0.02 (W/(m.K)), bending modulus not less than 1500MPa, tensile strength not less than 30MPa and impact strength not less than 300J/m.
Preferably, in the second step, before the lever type plunger pump is started, whether the adjusting handle has zero pressure or not is checked, the working pressure can be gradually increased after the lever type plunger pump is operated for 1-2 minutes, and the adjusting handle is locked by the locking nut after the working pressure required by production is adjusted, so that the pressure is prevented from swinging up and down.
The invention has the technical effects and advantages that: the method can effectively increase the utilization of the non-metal powder of the waste cable, increase the resource recycling, and prepare the polydicyclopentadiene and the high-efficiency polydicyclopentadiene heat-preservation pipe material by using a novel single-component mixing device, thereby realizing the high-value utilization of the non-metal powder resource of the waste cable, further developing the domestic market and improving the enterprise benefit.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a high-value and high-efficiency development technical method for nonmetal powder of a waste cable, which comprises the following steps:
the method comprises the following steps: adding a part of waste cable nonmetal powder into a raw material for preparing polydicyclopentadiene resin as an auxiliary material, and preparing polydicyclopentadiene by adopting a single-component polydicyclopentadiene mixing device;
step two: the single-component preparation polydicyclopentadiene mixing device adopts a proportion measuring scale to connect a plunger pump, and is matched with a circular proportion regulator to jointly form a lever type plunger pump, so that main and auxiliary materials with large proportion difference can be accurately injected, and the main and auxiliary materials with large proportion difference can be uniformly mixed by matching with a screw type mixer;
step three: the polydicyclopentadiene heat-preservation pipe adopts dicyclopentadiene resin (DCPD) to prepare an inner shell and an outer shell, and the foamed DCPD is used as a filling layer and is used as a recycling result of the nonmetal powder of the waste cable.
Wherein the density of the polydicyclopentadiene is 1.04g/cm3, the polydicyclopentadiene can resist common acid, alkali and organic solvent, the flexural modulus is 1790-2070 MPa, the tensile strength is 34MPa, and the thermal deformation temperature is 185.5 ℃.
Preferably, the screw type mixer can be mixed according to a preset proportion when working, and the mixture is automatically converted into a rotating speed through the conditions set by the full-digital microcomputer control system to directly drive the precision screw to extrude the raw material, and the error value is not higher than +/-1%.
Furthermore, the dicyclopentadiene thermal insulation pipe prepared by adopting dicyclopentadiene resin (DCPD) in the third step adopts the same base material for the shell formed by the inner part and the outer part and the foaming layer of the filling layer, so that the bonding strength is high, the thermal expansion coefficients are the same, an additional bonding layer is avoided between layers, and the performance reduction of the pipe caused by the failure of the bonding agent and the thermal expansion deformation during long-time use is prevented.
Furthermore, the prepared pipe has the characteristics of high strength, light weight, heat preservation and high temperature resistance, wherein the heat conductivity coefficient is as follows: not more than 0.02 (W/(m.K)), bending modulus not less than 1500MPa, tensile strength not less than 30MPa and impact strength not less than 300J/m.
And in the second step, before starting the lever type plunger pump, checking whether the adjusting handle has zero pressure or not, gradually increasing the working pressure after running for 1-2 minutes, and locking the adjusting handle by using a locking nut after adjusting to the working pressure required by production to prevent the pressure from swinging up and down.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A high-value and high-efficiency development technical method for waste cable nonmetal powder is characterized by comprising the following steps:
the method comprises the following steps: adding a part of waste cable nonmetal powder into a raw material for preparing polydicyclopentadiene resin as an auxiliary material, and preparing polydicyclopentadiene by adopting a single-component polydicyclopentadiene mixing device;
step two: the single-component preparation polydicyclopentadiene mixing device adopts a proportion measuring scale to connect a plunger pump, and is matched with a circular proportion regulator to jointly form a lever type plunger pump, so that main and auxiliary materials with large proportion difference can be accurately injected, and the main and auxiliary materials with large proportion difference can be uniformly mixed by matching with a screw type mixer;
step three: the polydicyclopentadiene heat-preservation pipe adopts dicyclopentadiene resin (DCPD) to prepare an inner shell and an outer shell, and the foamed DCPD is used as a filling layer and is used as a recycling result of the nonmetal powder of the waste cable.
2. The high-value efficient development technical method of the nonmetal powder of the waste cables according to claim 1, wherein the density of the polydicyclopentadiene at this time is 1.04g/cm3, the polydicyclopentadiene can resist common acid, alkali and organic solvent, the flexural modulus is 1790-2070 MPa, the tensile strength is 34MPa, and the thermal deformation temperature is 185.5 ℃.
3. The method as claimed in claim 1, wherein the screw mixer is operated according to a predetermined ratio, and the screw mixer is automatically converted into a rotational speed to directly drive the precision screw to extrude the raw material under the conditions set by the full-digital microcomputer control system, and the error value is not higher than ± 1%.
4. The high-value and high-efficiency development technical method for the nonmetal powder of the waste cables according to claim 1, wherein the shell formed by the inside and the outside of the dicyclopentadiene heat-insulation pipe prepared by using dicyclopentadiene (DCPD) resin and the foaming layer of the filling layer are made of the same base material, so that the bonding strength is high, the thermal expansion coefficients are the same, an additional bonding layer is avoided between the layers, and the performance reduction of the pipe caused by the failure of the bonding agent and the thermal expansion deformation during the long-time use is prevented.
5. The high-value and high-efficiency development technical method of the non-metal powder of the waste cable according to claim 1, wherein the manufactured pipe has the characteristics of high strength, light weight, heat preservation and high temperature resistance, wherein the heat conductivity coefficient is as follows: not more than 0.02 (W/(m.K)), bending modulus not less than 1500MPa, tensile strength not less than 30MPa and impact strength not less than 300J/m.
6. The high-value and high-efficiency development technical method for the nonmetal powder of the waste cable according to the claim 1, wherein in the second step, before starting the lever type plunger pump, whether the adjusting handle has zero pressure or not is checked, after the lever type plunger pump operates for 1-2 minutes, the working pressure can be gradually increased, and after the working pressure required by production is adjusted, the adjusting handle is locked by a locking nut to prevent the pressure from swinging up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110616177.4A CN113427654A (en) | 2021-06-02 | 2021-06-02 | High-value and high-efficiency development technical method for nonmetal powder of waste cables |
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| CN202110616177.4A CN113427654A (en) | 2021-06-02 | 2021-06-02 | High-value and high-efficiency development technical method for nonmetal powder of waste cables |
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| CN113427654A true CN113427654A (en) | 2021-09-24 |
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| CN202110616177.4A Pending CN113427654A (en) | 2021-06-02 | 2021-06-02 | High-value and high-efficiency development technical method for nonmetal powder of waste cables |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101597351A (en) * | 2009-06-25 | 2009-12-09 | 河南科技大学 | The polydicyclopentadien//rubber in-situ polymerization blending composite material preparation method |
| CN101987907A (en) * | 2010-10-18 | 2011-03-23 | 河南科技大学 | Polydicyclopentadiene composite material and preparation method thereof |
| CN102490334A (en) * | 2011-12-19 | 2012-06-13 | 陈蕴 | Method for manufacturing large caliber polyolefine environment-friendly drain pipe adopting twin screw extrusion manner |
| CN102675801A (en) * | 2011-12-19 | 2012-09-19 | 河南科技大学 | Flame-retardant toughened polydicyclopentadiene composite material and preparation method thereof |
| CN210705875U (en) * | 2019-09-28 | 2020-06-09 | 广东聚航新材料研究院有限公司 | Mixing device for preparing polydicyclopentadiene from single component |
| CN210978984U (en) * | 2019-09-28 | 2020-07-10 | 广东聚航新材料研究院有限公司 | Polydicyclopentadiene heat-preservation pipe |
-
2021
- 2021-06-02 CN CN202110616177.4A patent/CN113427654A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101597351A (en) * | 2009-06-25 | 2009-12-09 | 河南科技大学 | The polydicyclopentadien//rubber in-situ polymerization blending composite material preparation method |
| CN101987907A (en) * | 2010-10-18 | 2011-03-23 | 河南科技大学 | Polydicyclopentadiene composite material and preparation method thereof |
| CN102490334A (en) * | 2011-12-19 | 2012-06-13 | 陈蕴 | Method for manufacturing large caliber polyolefine environment-friendly drain pipe adopting twin screw extrusion manner |
| CN102675801A (en) * | 2011-12-19 | 2012-09-19 | 河南科技大学 | Flame-retardant toughened polydicyclopentadiene composite material and preparation method thereof |
| CN210705875U (en) * | 2019-09-28 | 2020-06-09 | 广东聚航新材料研究院有限公司 | Mixing device for preparing polydicyclopentadiene from single component |
| CN210978984U (en) * | 2019-09-28 | 2020-07-10 | 广东聚航新材料研究院有限公司 | Polydicyclopentadiene heat-preservation pipe |
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Application publication date: 20210924 |
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