CN115651292A - Environment-friendly full-regeneration polyethylene optical cable sheath material and preparation method thereof - Google Patents
Environment-friendly full-regeneration polyethylene optical cable sheath material and preparation method thereof Download PDFInfo
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- CN115651292A CN115651292A CN202211180300.3A CN202211180300A CN115651292A CN 115651292 A CN115651292 A CN 115651292A CN 202211180300 A CN202211180300 A CN 202211180300A CN 115651292 A CN115651292 A CN 115651292A
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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
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention discloses an environment-friendly fully-regenerated polyethylene optical cable sheath material and a preparation method thereof, belonging to the technical field of high polymer materials. The composite material comprises the following raw materials in parts by weight: 80-123 parts of regenerated polyethylene, 1-3 parts of functional master batch, 0.3-0.6 part of antioxidant, 0.3-0.5 part of white oil and 5-6 parts of black master batch; the regenerated polyethylene comprises a regenerated film and regenerated bottle pieces, wherein the regenerated film accounts for more than 56% of the regenerated polyethylene in mass percent. The invention can improve the condition that the oxidation induction period in the regenerated polyethylene sheath material is sharply attenuated even if the oxidation induction period is too short, and the production and preparation of the regenerated polyethylene sheath material can be suitable for various regenerated polyethylene raw materials in various batches, thereby greatly improving the quality stability of the regenerated polyethylene optical cable sheath material and being beneficial to expanding the application and popularization of the environment-friendly regenerated polyethylene optical cable sheath material.
Description
Technical Field
The invention relates to an environment-friendly fully-regenerated polyethylene optical cable sheath material and a preparation method thereof, belonging to the technical field of high polymer materials.
Background
The sheath layer is a protection structure which is coated on the periphery of the optical fiber cable and used for protecting the optical fiber cable from environmental interference or corrosion so as to improve the stability of the optical fiber cable after being laid in use. With the continuous improvement of the capacity demand of optical fiber and optical cable products, the demand of jacket materials is correspondingly high. At present, in order to reduce the industrial cost and realize the recycling of resources, the preparation of a sheath layer material by using a recycled polyethylene material as a raw material becomes a new subject in the field of polymer materials. The recycled polyethylene material is recycled polyethylene material which is recycled and is produced again through the processes of crushing, extruding and the like, and because the recycled polyethylene material is exposed to the sun for a long time, partial material generates free radicals after photodegradation and oxidation, and the effect of the antioxidant in the prepared cable material can be influenced when the recycled polyethylene material is used as recycled polyethylene. Meanwhile, part of the reclaimed materials contain part of metal ions due to long-term use, so that the oxidation induction period of the materials prepared from the reclaimed materials after the antioxidant is added is rapidly reduced.
Under the condition that a regenerated polyethylene material is not added, 0.3% of antioxidant is added, the oxidation induction period of the prepared finished product is 80-110 min at 200 ℃, the antioxidant with the same proportion is added after the regenerated polyethylene material is adopted as a raw material, the oxidation induction period of the prepared finished product is less than 30min, the increase of the antioxidant amount in the raw material is not obvious to the promotion of the oxidation induction period, the antioxidant amount in the raw material is increased to 0.7%, the oxidation induction period of the prepared finished product can only reach 30-40 min, and the frequent occurrence of the phenomenon causes serious influence and obstruction to the application of the regenerated polyethylene material in a sheath material.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an environment-friendly fully-regenerated polyethylene optical cable sheath material and a preparation method thereof.
The purpose of the invention is realized by the following technical scheme: the environment-friendly fully-regenerated polyethylene optical cable sheath material comprises the following raw materials in parts by weight: 80-123 parts of regenerated polyethylene, 1-3 parts of functional master batch, 0.3-0.6 part of antioxidant, 0.3-0.5 part of white oil and 5-6 parts of black master batch; the regenerated polyethylene comprises a regenerated film and regenerated bottle flakes, the regenerated film accounts for more than 56% of the regenerated polyethylene by mass, and the functional master batch comprises calcium oxide, zinc oxide, high-melt-index PE resin, oxidized polyethylene, PE wax and zinc stearate.
Furthermore, the regenerated polyethylene comprises, by mass, 25-40 parts of agricultural film, 30-40 parts of packaging film, 25-35 parts of regenerated bottle flakes and 0-8 parts of mineral water bottle cap, wherein the regenerated bottle flakes comprise low-pressure variegated bottle flakes and transparent milk bottle flakes.
Further, the functional mother granules comprise the following raw materials in parts by weight: 2 to 4 parts of zinc stearate, 10 to 15 parts of high-melt-index PE resin, 80 to 85 parts of calcium oxide, 3 to 5 parts of zinc oxide, 1 to 3 parts of oxidized polyethylene and 1 to 2 parts of PE wax.
Further, the MFR of the high-melt-index PE resin is more than or equal to 4g/10min.
Further, the antioxidant includes phenolic antioxidant and phosphite antioxidant.
Further, the mass ratio of the phenolic antioxidant to the phosphite antioxidant is (1-2): 1.
the invention also aims to provide a preparation method of the environment-friendly fully-regenerated polyethylene optical cable sheath material, which comprises the following steps: mixing the regenerated polyethylene with white oil, stirring uniformly, adding the antioxidant, the functional master batches and the black master batches, continuously stirring uniformly, and extruding and granulating to obtain the environment-friendly regenerated polyethylene optical cable sheath material.
The invention has the beneficial effects that:
by adopting the functional master batch containing calcium oxide, zinc oxide and zinc stearate to be compounded with the regeneration raw material with the content of the regeneration film exceeding 56 percent of the total mass of the regeneration polyethylene, the problem of rapid attenuation of oxidation induction period caused by a large amount of free radicals generated by photodegradation and oxidation in the regeneration polyethylene raw material can be effectively solved. On one hand, the calcium oxide can absorb and remove water contained in the raw materials, prevents an antioxidant from being dissolved in water, has a protective effect on the antioxidant, is beneficial to continuously playing an antioxidant effect in the raw materials and promotes the inhibition effect on free radicals in the raw materials. On the other hand, by compounding the calcium oxide and the zinc stearate, the passivation of copper ions, silver ions and the like contained in the raw materials can be realized, and the catalytic action of the calcium oxide on thermal oxidation degradation reaction is reduced. Meanwhile, zinc oxide is added into the functional master batch, so that the zinc oxide is compounded with other components to improve the heat conductivity of the processed material, reduce the local heat accumulation of the raw material in the high-temperature processing process and avoid the generation of free radicals by the thermal oxidation of the local material. The invention can obviously improve the condition that the oxidation induction period in the regenerated polyethylene containing a large amount of regenerated film raw materials is sharply attenuated or even can not be detected, even if regenerated materials such as regenerated films which generate a large amount of free radicals through long-term illumination and exposure, degradation or oxidation are adopted, the regenerated optical cable sheath material which is superior to the national standard and has a stable oxidation induction period can be formed under a lower antioxidant addition amount, so that the production and preparation of the regenerated polyethylene optical cable sheath material can be suitable for various regenerated polyethylene raw materials in various batches, the quality stability of the regenerated polyethylene optical cable sheath material is greatly improved, and the application and popularization of the environment-friendly regenerated polyethylene optical cable sheath material are favorably expanded.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of protection of the present invention.
The invention provides an environment-friendly fully-regenerated polyethylene optical cable sheath material which comprises the following raw materials in parts by weight: 80 to 123 portions of regenerated polyethylene, 1 to 3 portions of functional master batch, 0.3 to 0.6 portion of antioxidant, 0.3 to 0.5 portion of white oil and 5 to 6 portions of black master batch. The regenerated polyethylene comprises 25-40 parts of agricultural film, 30-40 parts of packaging film, 25-35 parts of regenerated bottle flake and 0-8 parts of mineral water bottle cap, and the regenerated bottle flake comprises low-pressure variegated bottle flake and transparent milk bottle flake. The functional master batch adopted by the invention comprises calcium oxide, zinc oxide, high-melt-index PE resin, oxidized polyethylene, PE wax and zinc stearate, and as a preferred embodiment, the functional master batch comprises the following raw materials: 2-4 parts of zinc stearate, 10-15 parts of high-melt-index PE resin, 80-85 parts of calcium oxide, 3-5 parts of zinc oxide, 1-3 parts of oxidized polyethylene and 1-2 parts of PE wax, wherein the MFR of the high-melt-index PE resin is more than or equal to 4g/10min.
In order to effectively inhibit free radicals contained in the regenerated polyethylene raw material, the antioxidant adopted by the invention comprises a phenolic antioxidant and a phosphite antioxidant, wherein the phenolic antioxidant is used as a main antioxidant and has the function of stopping or inhibiting a chain initiation reaction and a chain growth reaction by capturing the free radicals so as to terminate the free radical chain reaction. Meanwhile, phosphite antioxidant is used as auxiliary antioxidant, and stable inactive products are generated by decomposing peroxide generated in the oxidation process, so that the oxidation process of the sheathing material is delayed. The phenolic antioxidant and the phosphite antioxidant in the antioxidants can be prepared according to the following formula (1-2): 1 is compounded in proportion.
The invention also aims to provide a preparation method of the environment-friendly fully-regenerated polyethylene optical cable sheath material, which comprises the following steps: firstly, mixing the regenerated polyethylene with white oil, adding the antioxidant, the functional master batch and the black master batch after uniformly stirring, continuously stirring uniformly, and then extruding and granulating to uniformly disperse the auxiliary agents such as the antioxidant and the like in a sheath material product to obtain the environment-friendly regenerated polyethylene optical cable sheath material. The stirring is carried out for 90s by adopting a high-speed mixer to uniformly mix the raw materials, and a double-stage single-screw extruder is adopted to extrude and granulate at 180-240 ℃.
Example one
The embodiment provides an environmental protection full regeneration polyethylene optical cable sheath material, and its raw materials include: 30 parts of agricultural film particles, 28 parts of packaging film particles, 18 parts of low-pressure variegated bottle flakes, 12 parts of transparent milk bottle flakes, 5 parts of mineral water bottle cover flakes, 2.5 parts of functional master batches, 0.24 part of phenolic antioxidant, 0.12 part of phosphite antioxidant, 0.5 part of white oil and 5 parts of black master batches. Wherein the functional master batch is obtained by mixing and extruding 3 parts of zinc stearate, 12 parts of high-melt-index PE resin, 83 parts of calcium oxide, 4 parts of zinc oxide, 2 parts of oxidized polyethylene and 1 part of PE wax.
The environment-friendly fully-regenerated polyethylene optical cable sheath material is prepared by the following method: firstly putting the regenerated polyethylene and the white oil into a high-speed mixer, stirring for 90s at a high speed, adding the antioxidant, the functional master batch and the black master batch after stirring uniformly, continuing stirring for 90s at a high speed, and then extruding and granulating to obtain the polyethylene.
Example two
The difference between the first embodiment and the second embodiment is mainly as follows: the sheath material raw materials of this embodiment include: 25 parts of agricultural film particles, 40 parts of packaging film particles, 15 parts of low-pressure variegated bottle flakes, 10 parts of transparent milk bottle flakes, 8 parts of mineral water bottle cover flakes, 1 part of functional master batches, 0.18 part of phenolic antioxidant, 0.18 part of phosphite antioxidant, 0.3 part of white oil and 6 parts of black master batches. The functional master batch is prepared by mixing and extruding 4 parts of zinc stearate, 15 parts of high-melt-index PE resin, 80 parts of calcium oxide, 5 parts of zinc oxide, 1 part of oxidized polyethylene and 1 part of PE wax.
EXAMPLE III
The difference between the first embodiment and the second embodiment is mainly as follows: the sheath material raw materials of this embodiment include: 40 parts of agricultural film particles, 30 parts of packaging film particles, 15 parts of low-pressure variegated bottle flakes, 20 parts of transparent milk bottle flakes, 3 parts of functional master batches, 0.2 part of phenolic antioxidant, 0.2 part of phosphite antioxidant, 0.4 part of white oil and 5.5 parts of black master batches. The functional master batch is prepared by mixing and extruding 2 parts of zinc stearate, 10 parts of high-melt-index PE resin, 85 parts of calcium oxide, 3 parts of zinc oxide, 3 parts of oxidized polyethylene and 2 parts of PE wax.
Comparative example 1
The comparative example differs from the first example mainly in that: the sheath material of the comparative example comprises 30 parts of agricultural film particles, 28 parts of packaging film particles, 18 parts of low-pressure variegated bottle flakes, 12 parts of transparent milk bottle flakes, 5 parts of mineral water bottle cover flakes, 1 part of functional master batches, 0.3 part of phenolic antioxidants, 0.15 part of phosphite antioxidants, 0.5 part of white oil and 5 parts of black master batches. The functional master batch of the comparative example is obtained by mixing and extruding 15 parts of high-melt-index PE resin, 80 parts of calcium oxide, 5 parts of zinc oxide, 1 part of oxidized polyethylene and 1 part of PE wax.
Comparative example No. two
The comparative example differs from example one mainly in that: the sheath material of the comparative example comprises 30 parts of agricultural film particles, 28 parts of packaging film particles, 18 parts of low-pressure variegated bottle flakes, 12 parts of transparent milk bottle flakes, 5 parts of mineral water bottle cover flakes, 3 parts of functional master batches, 0.3 part of phenolic antioxidant, 0.15 part of phosphite antioxidant, 0.5 part of white oil and 5 parts of black master batches. The functional master batch of the comparative example is obtained by mixing and extruding 4 parts of zinc stearate, 15 parts of high-melt-index PE resin, 5 parts of zinc oxide, 1 part of polyethylene oxide and 1 part of PE wax.
Comparative example No. three
The comparative example differs from example one mainly in that: the sheath material of the comparative example consists of 30 parts of agricultural film particles, 28 parts of packaging film particles, 18 parts of low-pressure variegated bottle pieces, 12 parts of transparent milk bottle pieces, 5 parts of mineral water bottle cover plates, 3 parts of functional master batches, 0.3 part of phenolic antioxidants, 0.15 part of phosphite antioxidants, 0.5 part of white oil and 5 parts of black master batches. The functional master batch of the comparative example is prepared by mixing and extruding 4 parts of zinc stearate, 15 parts of high-melt-index PE resin, 80 parts of calcium oxide, 1 part of oxidized polyethylene and 1 part of PE wax.
Product testing
The sheath materials prepared in each of examples and comparative examples were prepared into pellets of 1mm × 1mm × 0.5mm or flakes of about 0.2mm in thickness as samples to be tested. The samples to be tested of each example and comparative example were subjected to the oxidation induction period test according to the description in the general test methods for insulation and sheathing materials for electric and optical cables in the national standards, and the test results are shown in table 1.
TABLE 1 results of the oxidation induction period test of each example and comparative example
| Group of | Oxidation induction time/min at 200 deg.C |
| Example one | 80 |
| Example two | 71 |
| EXAMPLE III | 85 |
| Comparative example 1 | 10 |
| Comparative example No. two | 12 |
| Comparative example No. three | 50 |
As can be seen from Table 1, in the case of using the same batch and using the regenerated film accounting for more than 56% of the regenerated polyethylene, the oxidation induction time of each embodiment of the present invention can reach more than 70min within the range of 0.34% -0.36% of the antioxidant addition. Compared with the prior art, the method has the advantages that 0.45% of antioxidant is adopted in the first comparative example, 0.44% of antioxidant is adopted in the second comparative example and the third comparative example, the oxidation induction time of the first comparative example and the second comparative example is only 10-12min, and the oxidation induction time of the third comparative example can only reach 50 min.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. The environment-friendly full-regeneration polyethylene optical cable sheath material is characterized in that: the composite material comprises the following raw materials in parts by mass: 80-123 parts of regenerated polyethylene, 1-3 parts of functional master batch, 0.3-0.6 part of antioxidant, 0.3-0.5 part of white oil and 5-6 parts of black master batch; the regenerated polyethylene comprises a regenerated film and regenerated bottle flakes, the regenerated film accounts for more than 56% of the regenerated polyethylene by mass, and the functional master batch comprises calcium oxide, zinc oxide, high-melt-index PE resin, oxidized polyethylene, PE wax and zinc stearate.
2. The environment-friendly fully-recycled polyethylene optical cable sheath material as claimed in claim 1, wherein: the regenerated polyethylene comprises, by mass, 25-40 parts of agricultural film, 30-40 parts of packaging film, 25-35 parts of regenerated bottle flakes and 0-8 parts of mineral water bottle cap, wherein the regenerated bottle flakes comprise low-pressure variegated bottle flakes and transparent milk bottle flakes.
3. The environment-friendly fully-regenerated polyethylene optical cable sheath material as claimed in claim 1, wherein the environment-friendly fully-regenerated polyethylene optical cable sheath material is characterized in that: the functional mother granules comprise the following raw materials in parts by weight: 2 to 4 parts of zinc stearate, 10 to 15 parts of high-melt-index PE resin, 80 to 85 parts of calcium oxide, 3 to 5 parts of zinc oxide, 1 to 3 parts of oxidized polyethylene and 1 to 2 parts of PE wax.
4. The environment-friendly fully-recycled polyethylene optical cable sheath material as claimed in claim 3, wherein the material comprises: the MFR of the high-melt-index PE resin is more than or equal to 4g/10min.
5. The environment-friendly fully-regenerated polyethylene optical cable sheath material as claimed in claim 1, wherein the environment-friendly fully-regenerated polyethylene optical cable sheath material is characterized in that: the antioxidant comprises a phenolic antioxidant and a phosphite antioxidant.
6. The environmental-friendly fully-regenerated polyethylene optical cable sheath material as claimed in claim 5, wherein the material comprises the following components in percentage by weight: the mass ratio of the phenol antioxidant to the phosphite antioxidant is 1-2: 1.
7. the preparation method of the environment-friendly fully-recycled polyethylene optical cable sheath material according to any one of claims 1 to 6, which is characterized by comprising the following steps of: the method comprises the following steps: mixing the regenerated polyethylene with white oil, adding the antioxidant, the functional master batch and the black master batch after uniformly stirring, continuously stirring uniformly, and then extruding and granulating to obtain the environment-friendly regenerated polyethylene optical cable sheath material.
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| CN202211180300.3A CN115651292A (en) | 2022-09-26 | 2022-09-26 | Environment-friendly full-regeneration polyethylene optical cable sheath material and preparation method thereof |
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Citations (5)
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|---|---|---|---|---|
| CN1431535A (en) * | 2003-01-15 | 2003-07-23 | 上海电缆研究所 | Track resistant jacket material of full medium and self bearing type aerial fiber cable |
| CN101492554A (en) * | 2009-01-23 | 2009-07-29 | 同济大学 | Environment friendly ant-proof mouse-proof cable sheath material and preparation method thereof |
| CN104119568A (en) * | 2014-06-26 | 2014-10-29 | 合肥和安机械制造有限公司 | Special filler for antibacterial anti-ageing cable sheath material and preparation method thereof |
| CN113527789A (en) * | 2021-07-07 | 2021-10-22 | 江阴爱科森博顿聚合体有限公司 | Aromatic polyethylene optical cable sheath material for vehicles and preparation method thereof |
| CN113637248A (en) * | 2021-06-29 | 2021-11-12 | 江阴爱科森博顿聚合体有限公司 | Preparation of low-shrinkage HDPE sheath material |
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- 2022-09-26 CN CN202211180300.3A patent/CN115651292A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1431535A (en) * | 2003-01-15 | 2003-07-23 | 上海电缆研究所 | Track resistant jacket material of full medium and self bearing type aerial fiber cable |
| CN101492554A (en) * | 2009-01-23 | 2009-07-29 | 同济大学 | Environment friendly ant-proof mouse-proof cable sheath material and preparation method thereof |
| CN104119568A (en) * | 2014-06-26 | 2014-10-29 | 合肥和安机械制造有限公司 | Special filler for antibacterial anti-ageing cable sheath material and preparation method thereof |
| CN113637248A (en) * | 2021-06-29 | 2021-11-12 | 江阴爱科森博顿聚合体有限公司 | Preparation of low-shrinkage HDPE sheath material |
| CN113527789A (en) * | 2021-07-07 | 2021-10-22 | 江阴爱科森博顿聚合体有限公司 | Aromatic polyethylene optical cable sheath material for vehicles and preparation method thereof |
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