CN1033959A - The method of recycling crosslinking polyethylene-insulated cable insulation skin - Google Patents
The method of recycling crosslinking polyethylene-insulated cable insulation skin Download PDFInfo
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- CN1033959A CN1033959A CN88108225A CN88108225A CN1033959A CN 1033959 A CN1033959 A CN 1033959A CN 88108225 A CN88108225 A CN 88108225A CN 88108225 A CN88108225 A CN 88108225A CN 1033959 A CN1033959 A CN 1033959A
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- polyethylene
- reclaims
- waste
- low molecular
- old
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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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- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
A kind of recovery, utilize the method for waste and old crosslinking polyethylene-insulated cable insulation skin again, following steps are arranged: a) cleaning of waste and old crosslinking polyethylene-insulated cable insulation skin, oven dry, pulverizing; B) the waste and old crosslinked polyethylene after pulverizing and auxiliary material (as the waste polyethylene that reclaims), softening agent, reach filler or colouring agent is prepared burden by a certain percentage; C) batching is extruded qualified plastic strip or grain through mediating in extruder, is to manufacture the cable filler, building pipe, the ideal material of low-voltage electrical apparatus accessory and civilian utensil.The present invention can operate under normal condition, has that technology is simple, cost is low, investment is little, the advantage of high efficiency.
Description
The present invention is the method for the waste and old crosslinking polyethylene-insulated cable insulation skin of a kind of recycling, belongs to the twice laid technical field.
The insulated hull of crosslinked cable, be a kind of by the linear molecule polyethylene through bridge formation crosslinked after, become the thermoset crosslink polyethylene of build molecular structure.This kind thermosetting plastics material, meeting heat can fusion, is insoluble to organic solvent yet.In case in cable production, waste product occurs, the cable insulation skin can only be pulled down, its treating method generally is to bury or burn as fuel, can not be recycled makes it to become new plastic products.In recent years, once carried out employing HTHP fractionating process abroad and reclaim poly experiment from waste and old crosslinking polyethylene-insulated cable insulation skin, but because of complex process, cost is too high and do not have practical significance.So, it is generally acknowledged that the waste and old product of this kind thermosetting plastics can not be copied into new product (seeing " TECHNOLOGY OF WELDING PLASTICS question and answer " the 4th page, China Machine Press's in December, 1987 version) again.The quantity of the crosslinking polyethylene-insulated cable insulation skin that state inner cable manufacturer scraps every year reaches three, four kilotons.Caused the huge waste on the resource.
The objective of the invention is to overcome the above-mentioned deficiency of prior art, work out a kind of method of the waste and old crosslinking polyethylene-insulated cable insulation skin of recycling that can under normal condition, operate, thereby realize turning waste into wealth twice laid.
The method of the waste and old crosslinking polyethylene-insulated cable insulation skin of the recycling that the present invention provides includes the following step:
A), the waste and old crosslinking polyethylene-insulated cable insulation skin that reclaims behind the outer semiconductor, cleans, dries, pulverizes in removing, stand-by auxiliary material is also corresponding to carry out preliminary treatment;
B), crosslinked polyethylene and auxiliary material (as the waste polyethylene of recovery) after pulverizing, softening agent (as low molecular polyethylene (liquid), paraffin wax and stearic acid etc.) carries out mix;
C), the batching enter general kneading, extrusion equipment is extruded the plastic strip that meets the requirements or is cut into grain.
Purpose of the present invention mainly is achieved by following measures, and the waste and old crosslinked polyethylene after promptly requiring to pulverize with other mixing formula that adds materials ratio is: (percentage by weight) %
The crosslinked polyethylene that reclaims: 30～60
The polyethylene that reclaims: 30～60
Softening agent: 10～30
In the softening agent that adds, what generally use is low molecular polyethylene (liquid), paraffin wax, stearic acid, the certain softening agent that also can select other for use.In the present invention, the low molecular polyethylene of adding (liquid) amount is generally more than 50% of whole softening agent addition, and when adding softening agent, above-mentioned three kinds of softening agents can add simultaneously, also can omit back two kinds a kind of.
For reducing cost, increase kind, also can add an amount of filler (for example calcium carbonate) or colouring agent (for example carbon black, phthalein white powder, phthalocyanine blue etc.) during mix.Its addition generally is no more than 10% of total batching thing amount.
The present invention compared with prior art, its superiority is, the recycling method that the present invention provides can be used under normal condition, broken through that the waste and old product about thermosetting plastics can not reclaim the conclusion that is reprocessed into new plastic product in the prior art under normal condition, this recycling is simple for process simultaneously, easy to utilize, have that cost is low, the advantage of little, the high efficiency of investment.
Embodiment one, charge ratio (percentage by weight) %
The crosslinked polyethylene that reclaims: 30
The polyethylene that reclaims: 50
Low molecular polyethylene (liquid): 15
Paraffin wax: 25
Stearic acid: 25
Remove inside and outside semi-conductive waste and old crosslinking polyethylene-insulated cable insulation skin earlier,, be cut into the section of 400mm after the oven dry, in disintegrating apparatus, pulverize through cleaning.The waste polyethylene that reclaims cleans simultaneously and dries, and incorporates extruder into and is extruded into bar, is cut into granular stand-by after the cooling.Waste and old crosslinked polyethylene after the pulverizing with other add materials mix according to the above ratio after, in general kneading, the plastic strip that output is qualified in the extrusion equipment or the grain.Wherein extruder screw L/D ratio is: 1:16, the temperature of charge section, compression section, homogenizing zone be controlled at Celsius 140～170 ℃ for well.
Embodiment two, charge ratio: (percentage by weight) %
The crosslinked polyethylene that reclaims: 35
The polyethylene that reclaims: 45
Low molecular polyethylene (liquid): 16
Paraffin wax: 2
Stearic acid: 2
Recycling technology is identical with example 1, and plastic strip of making according to above-mentioned prescription or grain have preferably plasticity, stretch rate and stretch breaking strength, are the desirable feedstock of extruding, inject, suppressing all types of plastic goods.
Embodiment three, charge ratio: (percentage by weight) %
The crosslinked polyethylene that reclaims: 33
The polyethylene that reclaims: 45
Low molecular polyethylene (liquid): 15
Paraffin wax: 3
Stearic acid: 3
Carbon black: 1
Recycling technology is identical with example 1.It is big that plastic strip of making according to above-mentioned prescription or grain have elasticity, black, tension intensity, is to extrude the raw material of black architectural engineering with tubing.
Embodiment four, charge ratio, (percentage by weight) %
The crosslinked polyethylene that reclaims: 35
The polyethylene that reclaims: 40
Low molecular polyethylene: 18
Paraffin wax: 2
Stearic acid: 2
Phthalein white powder: 3
Recycling technology is identical with example one.Plastic strip of making according to above-mentioned prescription or grain, look white, good intensity is arranged, stretch rate and extrudable property, is to make white construction with all size tubing and low-voltage electrical apparatus raw material.
Embodiment five, charge ratio: (percentage by weight) %
The crosslinked polyethylene that reclaims: 35
The polyethylene that reclaims: 40
Low molecular polyethylene (liquid): 15
Calcium carbonate: 5
Paraffin wax: 3
Stearic acid: 2
Embodiment six, charge ratio: (percentage by weight) %
The crosslinked polyethylene that reclaims: 40
The polyethylene that reclaims: 35
Low molecular polyethylene (liquid): 15
Calcium carbonate: 3
Paraffin wax:
Stearic acid: 3
The dark green G:1 of phthalein
Embodiment seven, charge ratio: (percentage by weight) %
The crosslinked polyethylene that reclaims: 30
The polyethylene that reclaims: 38
Low molecular polyethylene (liquid): 18
Calcium carbonate: 8
Paraffin wax: 5
Phthalocyanine blue B:1
Embodiment eight, charge ratio: (percentage by weight) %
The crosslinked polyethylene that reclaims: 32
The polyethylene that reclaims: 40
Low molecular weight polycaprolactone second ㄒ sea 5
Calcium carbonate: 7
Paraffin wax: 5
Lithol rubine 7B:1
Example 5 is identical with example 1 to the recycling technology of example 8, and plastic strip or the grain made by above-mentioned prescription are to make cable filler, the desirable feedstock of building pipe, low-voltage electrical apparatus accessory and all kinds of civilian utensils.
Claims (8)
1, the method for the waste and old crosslinking polyethylene-insulated cable insulation skin of a kind of recycling is characterized in that this method includes the following step:
1.1, cleaning, oven dry, the pulverizing of the waste and old crosslinking polyethylene-insulated cable insulation skin that reclaims; And the preliminary treatment of stand-by auxiliary material;
1.2, batch mixes such as the waste polyethylene of the waste and old crosslinked polyethylene after pulverizing and recovery, softening agent, its ratio is: (percentage by weight) %
The crosslinked polyethylene that reclaims: 30～60
The polyethylene that reclaims: 30～60
Softening agent: 10～30
1.3, the batching after mediating the extrusion plastic bar.
2, according to the said recycling method of claim 1, the softening agent that adds when it is characterized in that batch mixes is low molecular polyethylene (liquid), paraffin wax and stearic acid, wherein the three can add simultaneously, also can omit a kind of in back two kinds, the low molecular polyethylene amount of adding accounts for more than 50% of softening dosage of adding.
3, according to the said recycling method of claim 1, also can add filler or colouring agent when it is characterized in that batch mixes, its addition is at below 10% of total amount of batching.
4,, it is characterized in that proportion scale is: (percentage by weight) % according to the said recycling method of claim 1～2
The crosslinked polyethylene that reclaims: 30
The polyethylene that reclaims: 50
Low molecular polyethylene (liquid): 15
Paraffin wax: 2.5
Stearic acid: 2.5
5,, it is characterized in that proportion scale is: (percentage by weight) % according to the said recycling method of claim 1～3
The crosslinked polyethylene that reclaims: 33
The polyethylene that reclaims: 45
Low molecular polyethylene (liquid): 15
Paraffin wax: 3
Stearic acid: 3
Carbon black: 1
6,, it is characterized in that proportion scale is: (percentage by weight) % according to the said recycling method of claim 1～3
The crosslinked polyethylene that reclaims: 35
The polyethylene that reclaims: 40
Low molecular polyethylene (liquid): 18
Stearic acid: 2
Paraffin wax: 2
Phthalein white powder: 3
7,, it is characterized in that charge ratio sea ㄖ Qi may lonely straight dental caries according to the said recycling method of claim 1～3
The crosslinked polyethylene that reclaims: 35
The polyethylene that reclaims: 40
Low molecular polyethylene (liquid): 15
Calcium carbonate: 5
Paraffin wax: 3
Stearic acid: 2
8,, it is characterized in that proportion scale is: (percentage by weight) % according to the said recycling method of claim 1～3
The crosslinked polyethylene that reclaims: 30
The polyethylene that reclaims: 38
Low molecular polyethylene (liquid): 18
Calcium carbonate: 8
Paraffin wax: 5
Phthalocyanine blue B:1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN88108225A CN1014307B (en) | 1988-11-28 | 1988-11-28 | Method of recovery and reuse of cross-linking polyethylene cable insulating coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN88108225A CN1014307B (en) | 1988-11-28 | 1988-11-28 | Method of recovery and reuse of cross-linking polyethylene cable insulating coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1033959A true CN1033959A (en) | 1989-07-19 |
| CN1014307B CN1014307B (en) | 1991-10-16 |
Family
ID=4834995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN88108225A Expired CN1014307B (en) | 1988-11-28 | 1988-11-28 | Method of recovery and reuse of cross-linking polyethylene cable insulating coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1014307B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006074589A1 (en) * | 2005-01-12 | 2006-07-20 | Shenzhen Woer Heat-Shrinkable Material Co., Ltd. | Process of using cross linked plastics as recovery material or modifier |
| CN102898768A (en) * | 2012-09-26 | 2013-01-30 | 江苏兴海线缆有限公司 | Flame retardant thermoplastic elastomer (TPE) made from waste crosslinked polyethylene cable materials and preparation method thereof |
| CN103483841A (en) * | 2013-09-02 | 2014-01-01 | 天津瑞和塑料制品有限公司 | Wear-resistant waterproof anti-aging wood-plastic composite material and molding process thereof |
| CN103554628A (en) * | 2013-11-21 | 2014-02-05 | 四川塑金科技有限公司 | Special material for tubular product produced by recovering and modifying waste cross-linked PE (Poly Ethylene) cable material as well as preparation method of special material |
| CN104385485A (en) * | 2014-10-08 | 2015-03-04 | 四川大学 | Waste crosslinked polyethylene recovered material and recovery method thereof |
-
1988
- 1988-11-28 CN CN88108225A patent/CN1014307B/en not_active Expired
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006074589A1 (en) * | 2005-01-12 | 2006-07-20 | Shenzhen Woer Heat-Shrinkable Material Co., Ltd. | Process of using cross linked plastics as recovery material or modifier |
| CN102898768A (en) * | 2012-09-26 | 2013-01-30 | 江苏兴海线缆有限公司 | Flame retardant thermoplastic elastomer (TPE) made from waste crosslinked polyethylene cable materials and preparation method thereof |
| CN102898768B (en) * | 2012-09-26 | 2015-03-04 | 江苏兴海线缆有限公司 | Flame retardant thermoplastic elastomer (TPE) made from waste crosslinked polyethylene cable materials and preparation method thereof |
| CN103483841A (en) * | 2013-09-02 | 2014-01-01 | 天津瑞和塑料制品有限公司 | Wear-resistant waterproof anti-aging wood-plastic composite material and molding process thereof |
| CN103483841B (en) * | 2013-09-02 | 2015-10-28 | 天津瑞和塑料制品有限公司 | A kind of wear-resisting, waterproof, anti-aging type wood plastic composite and moulding process thereof |
| CN103554628A (en) * | 2013-11-21 | 2014-02-05 | 四川塑金科技有限公司 | Special material for tubular product produced by recovering and modifying waste cross-linked PE (Poly Ethylene) cable material as well as preparation method of special material |
| CN103554628B (en) * | 2013-11-21 | 2016-03-02 | 四川塑金科技有限公司 | Waste and old crosslinked PE CABLE MATERIALS reclaims modification and produces special material for tube and preparation method thereof |
| CN104385485A (en) * | 2014-10-08 | 2015-03-04 | 四川大学 | Waste crosslinked polyethylene recovered material and recovery method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1014307B (en) | 1991-10-16 |
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