CN107540930A - A kind of MPP power cable protecting pipes - Google Patents
A kind of MPP power cable protecting pipes Download PDFInfo
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- CN107540930A CN107540930A CN201610498362.7A CN201610498362A CN107540930A CN 107540930 A CN107540930 A CN 107540930A CN 201610498362 A CN201610498362 A CN 201610498362A CN 107540930 A CN107540930 A CN 107540930A
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- polypropylene
- power cable
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- cable protecting
- modified polypropene
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Abstract
The invention discloses a kind of MPP power cable protecting pipes, it is made by modified polypropene, by percentage to the quality, the modified polypropene consists of the following composition:Polypropylene 65% 80%；Polyolefin elastomer 15% 25%；Nano-complex particle 3% 10%；Beta crystal-type nucleater 0.1% 2%, the nano-complex particle are the calcium carbonate particle that surface attachment has silicon dioxide granule.The present invention has advantages below and effect：Using polypropylene, polyolefin elastomer, the poly-blended system that nano-complex particle is formed, polyolefin elastomer plays a part of toughness reinforcing to polypropylene, nano-complex particle has the effect of silica and calcium carbonate particle concurrently, lift the tensile strength of modified polypropene, impact strength and ring stiffness, further toughness reinforcing simultaneously, acted synergistically after adding beta crystal-type nucleater with calcium carbonate particle, polypropylene is set to be changed from alpha-crystal form to beta crystal, further improve the impact property of modified polypropene, the combination property for improving the MPP power cable protecting pipes being made by modified polypropene is reached.
Description
Technical field
The present invention relates to plastic pipe field, more particularly to a kind of MPP power cable protecting pipes.
Background technology
MPP pipes use modified polypropene as main raw material(s), have high temperature resistance, proof to external pressure the characteristics of, suitable for 10KV with
Upper high voltage transmission line cable duct bank tubing.
Publication No. CN104725725A Chinese patent《A kind of new modified polypropylene pipe and preparation method thereof》It is public
A kind of new modified polypropylene pipe has been opened, in parts by weight, including following components：Polypropylene 15-30 parts, nano-calcium carbonate 2-
5 parts, mica powder 1-3 parts, nano-titanium oxide 1-3 parts, dispersant 5-8 parts, compatilizer 2-6 parts, antiaging agent 1-5 parts..
But the electric power is had the following disadvantages with modified polypropene bellows formula：Although the new modified polypropylene pipe
It is good with ring stiffness height, heat resistance, but toughness reinforcing is not carried out to modified polypropene, cause the poor toughness of product, stretching is by force
Spend it is low, easy embrittlement during use and ftracture,
The content of the invention
It is an object of the invention to provide a kind of MPP power cable protecting pipes of good toughness.
The present invention above-mentioned technical purpose technical scheme is that：A kind of MPP power cables protection
Pipe, is made, by percentage to the quality, the modified polypropene consists of the following composition by modified polypropene:
The nano-complex particle is the calcium carbonate particle that surface attachment has silicon dioxide granule.
By using above-mentioned technical proposal, polypropylene is the versatility plastic resin that a kind of source is wide, cheap, still
Fragility is larger, limits its application in power cable protecting pipe field.First by polyolefin elastomer with it is polypropene blended
To increase toughness, polyolefin elastomer is that have narrow molecular weight distribution and uniform short branch using metallocene as catalyst
The thermoplastic elastomer (TPE) of chain distribution, the main performance of this elastomer is very prominent, exceedes in very many performance indications general
Logical elastomer, polyolefin elastomer with it is polypropene blended after, form " sea-island " structure, marine facies are polypropylene, and island is mutually polyolefin
Elastomer, after adding polyolefin elastomer in brittle polypropylene, under external impact force action, polyolefin elastomer triggers
A large amount of crazings, polypropylene produce shear yielding, and crazing caused by polyolefin elastomer further develops, crazing run into shear band or
Terminated after another adjacent resilient body, running into another crazing can then turn to or branched, be induced after the stress concentration at crazing forward new
Shear band, these above-mentioned effects all can largely alleviate the impact failure process of material, and increase the energy of destructive process, from
And improve the toughness of modified polypropene.
Although polypropylene and polyolefin blend have good toughness effect, other power of modified polypropene are reduction of
Characteristic is learned, such as intensity and ring stiffness, by adding nano-complex particle, the silica particle diameter in nano-complex particle is small,
Particle specific surface area increases, and increases with Polypropylene contact area, and more crackles are produced when material is impacted, and absorbs more
Impact energy, the combination property of modified polypropene is lifted, tensile property, the ring stiffness of modified polypropene get a promotion, especially
Impact strength is significantly improved.
Calcium carbonate particle is blended after adding polypropylene, non-friendship of the polypropylene using nano level calcium carbonate particle as strand
Join point, lift the tensile strength of modified polypropene, when calcium carbonate particle content is less than 10%, the contribution to tensile strength is particularly
Substantially, therefore the nano-complex particle of lower content is selected.Calcium carbonate particle has stress concentration and the balance of stress radiation simultaneously
Effect, impact energy are absorbed and radiated, and it is not in obvious stress concentration to make modified polypropene, reaches composite
Mechanical balance state.In addition, nano-complex particle has an energy transmission effect, polyolefin elastomer with it is polypropene blended after,
Crazing is produced when being impacted, crazing can also terminate after running into nano-complex particle, avoid crazing from further expanding and shape
Into crackle.
Because silicon dioxide granule is mainly silicon dioxide granule size dimension to the performance contribution of modified polypropene and outer
Surface characteristic, it is higher that silicon dioxide granule is modified cost, by the way that silicon dioxide granule is attached into calcium carbonate particle surface
Core-shell structure is formed, the manufacturing cost of modified polypropene can be reduced, and can utilizes calcium carbonate particle and silica simultaneously
Particle is modified to polypropylene.
Other mechanical characteristics of modified polypropene are reduced while polyolefin elastomer and polypropene blended rear increase toughness,
Beta crystal-type nucleater can also be added to be improved.Polypropylene is a kind of crystalline high polymer, has α, β, γ, δ and plan six
Five kinds of different crystal habits of cube.Alpha-crystal form belongs to monoclinic system, and it is a kind of most stable of spherocrystal, is commercialization polypropylene
Interior main component.Beta crystal belongs to hexagonal crystal system, compared with alpha-crystal form spherocrystal, beta crystal have excellent impact property and other
Mechanical properties decrease is not that polypropylene crystal formation is changed from alpha-crystal form to beta crystal it is obvious that after addition beta crystal-type nucleater, is improved
The impact strength of modified polypropene.Simultaneously calcium carbonate particle can also induce polypropylene from alpha-crystal form to beta crystal change, with beta crystal into
Synergy is played in core agent, improves the conversion ratio that polypropylene changes from alpha-crystal form to beta crystal.
The further setting of the present invention is：The polypropylene mass percent is 68%-80%, the polyolefin elastomer
Mass percent scope be 15%-20%.
By using above-mentioned technical proposal, polypropylene of the mass percent for 68%-80% is used, mass percent is
15%-20% polyolefin elastomer, modified polypropene is set to keep balance between tensile strength and ring stiffness performance.
The further setting of the present invention is：The polyacrylic mass percent is 75%, the polyolefin elastic constitution
It is 20% to measure percentage.
By using above-mentioned technical proposal, polyolefin elastomer mass percent is 20%, and polypropylene mass percent is
When 75%, ensure that modified polypropene has under preferable tensile strength, other mechanical properties such as ring stiffness etc. is not in bright
It is aobvious to decline.
The further setting of the present invention is：The nano-complex particle mass percent is 4.4%, the beta crystal nucleation
Agent mass percent is 0.6%.
By using above-mentioned technical proposal, nano-complex particle content is 4.4%, in calcium carbonate particle and titanium dioxide silicon grain
In the presence of son, modified polypropene has higher tensile strength and ring stiffness.
The further setting of the present invention is：The beta crystal-type nucleater is calcium pimelate, amide compound, red pigment quinoline
One kind during acridone is red, the polypropylene are HOPP.
By using above-mentioned technical proposal, effect of the beta crystal-type nucleater to HOPP apparently higher than COPP,
The conversion ratio changed in polypropylene from alpha-crystal form to beta crystal is further improved, so as to improve impact strength.Calcium pimelate is a kind of
Polypropylene beta crystal nucleating agent, there is the characteristics of transformation efficiency is high.Red pigment quinacridone is red as beta crystal-type nucleater
Meanwhile firm excellent performance, heat resistance is high, is not migrated in modified polypropene, and weatherability is excellent, and color and luster is fresh after long-term use
It is gorgeous, it is easy to the identification and positioning of MPP power cable protecting pipes.Amide compound can be also induced polypropylene crystal formation.
The further setting of the present invention is：By percentage to the quality, the polypropylene contains 8%-12% maleic anhydride
Connect branch polypropylene.
By using above-mentioned technical proposal, connected in polypropylene macromolecular and carry out connecing branch, maleic anhydride, which connects branch thing, to be had by force
Polarity, as the coupling agent for improving nano-complex particle and polypropylene interface interaction power, so as to improve polypropylene with it is nano combined
The compatibility of particle, when it is 8%-12% that maleic anhydride, which connects branch polypropylene content, be advantageous to modified polypropene yield strength and
The raising of bending strength.
In summary, the invention has the advantages that：Using polypropylene, polyolefin elastomer, nano-complex particle
The poly-blended system formed, polyolefin elastomer play a part of toughness reinforcing to polypropylene, and nano-complex particle has titanium dioxide concurrently
The effect of silicon and calcium carbonate particle, to polyolefin elastomer with it is polypropene blended after, lift other mechanical property of modified polypropene
Can, such as tensile strength, impact strength, while carry out further carrying out toughness reinforcing to modified polypropene, add after beta crystal-type nucleater with
Calcium carbonate particle acts synergistically, and polypropylene is changed from alpha-crystal form to beta crystal, further improves the impact property of modified polypropene,
The combination property for improving the MPP power cable protecting pipes being made by modified polypropene is reached.
Embodiment
Specific embodiment is only explanation of the invention, and it is not limitation of the present invention, those skilled in the art
The modification of no creative contribution can be made to the present embodiment as needed after this specification is read, but as long as in this hair
All protected in bright right by Patent Law.
Embodiment 1:A kind of MPP power cable protecting pipes, it is raw material by modified polypropylene material, uses plastic extrusion mechanism
Form.
2 parts of silica are weighed by weight to be dissolved in sodium silicate solution, are weighed 10 parts of calcium carbonate and are fabricated to calcium carbonate and hang
Supernatant liquid, obtained sodium carbonate suspension is warming up to 80 DEG C, was then even added to obtained sodium silicate solution in 3 hours
In sodium carbonate suspension, adjusted with hydrochloric acid and maintain pH of suspension=9, it is old again after charging to spend 3 hours, 100 after being filtered
Dried at DEG C, sieve (250mesh), that is, obtain nano-complex particle.Obtained nano-complex particle is heated up in mulser
Silane coupler constant temperature stir process 1 hour at 60 DEG C is added afterwards.
65 parts of HOPPs are weighed by mass parts, 10 parts of maleic anhydrides connect branch polypropylene, 4.4 parts of treated nanometers are answered
Close particle, 0.6 part of calcium pimelate and be put into high mixer and be well mixed, with plastic extruder extruding pelletization, then with resulting
It is granulated after adding 20 parts of polyolefin elastomers and is well mixed, you can obtains modified polypropene, then MPP is fabricated to plastic extruder
Power cable protecting pipe and experiment batten, the caliber specification of making is Φ 110 × 8, and length is 1 meter/root.With GB/T 1033.1-
2008、GB/T 3960-1983(1989)、GB/T 9647-2003、GB/T1633-2000、GB/T 8804.3-2003、GB/T
9341-2008, Q/HJ01-2012, GB/T1043-93 are detection foundation, detect ring stiffness, the punching of MPP power cable protecting pipes
Hit intensity, tensile strength, bending strength, test result is listed in table 1.Wherein impact strength is detected as unnotched impact strength
Test, simply supported beam pendulum impact test, tester are XJ-50G combined type shock machines, impact velocity 2.9m/s, are put
Hammer energy is 2J.
Embodiment 2：According to various constituent contents listed in table 1 below, the method for repeating embodiment 1, listed in table 1
Test result.
Embodiment 3：According to various constituent contents listed in table 1 below, the method for repeating embodiment 1, listed in table 1
Test result.
Embodiment 3：According to various constituent contents listed in table 1 below, the method for repeating embodiment 1, listed in table 1
Test result.
Embodiment 4：According to various constituent contents listed in table 1 below, the method for repeating embodiment 1, listed in table 1
Test result.But replace calcium pimelate with red pigment quinacridone is red.
Embodiment 5：According to various constituent contents listed in table 1 below, the method for repeating embodiment 1, listed in table 1
Test result.But replace calcium pimelate with amide compound.
Comparative example 1：According to various constituent contents listed in table 1 below, the method for repeating embodiment 1, listed in table 1
Test result.
Comparative example 2：According to various constituent contents listed in table 1 below, the method for repeating embodiment 1, listed in table 1
Test result.
Comparative example 3：According to various constituent contents listed in table 1 below, the method for repeating embodiment 1, listed in table 1
Test result.
Comparative example 4：According to various constituent contents listed in table 1 below, the method for repeating embodiment 1, listed in table 1
Test result.But replace nano-complex particle with nanosized silica particles.
Comparative example 5：According to various constituent contents listed in table 1 below, the method for repeating embodiment 1, listed in table 1
Test result.But replace nano-complex particle with nanosized silica particles.
Comparative example 6：According to various constituent contents listed in table 1 below, the method for repeating embodiment 1, listed in table 1
Test result.
Table 1
In above-mentioned table 1 each embodiment and comparative example test data explanation, modified polypropylene material of the invention make and
Into MPP power cable protecting pipes be substantially better than the sample of comparative example.
Claims (6)
1. a kind of MPP power cable protecting pipes, are made by modified polypropene, it is characterised in that：By percentage to the quality, institute
Modified polypropene is stated to consist of the following composition:：
The nano-complex particle is the calcium carbonate particle that surface attachment has silicon dioxide granule.
A kind of 2. MPP power cable protecting pipes according to claim 1, it is characterised in that：The polypropylene quality percentage
Than being 15%-20% for 68%-80%, the polyolefin elastomer mass percent scope.
A kind of 3. MPP power cable protecting pipes according to claim 2, it is characterised in that：The polyacrylic quality hundred
Divide than being 75%, the polyolefin elastomer mass percent is 20%.
A kind of 4. MPP power cable protecting pipes according to claim 3, it is characterised in that：The nano-complex particle matter
It is 4.4% to measure percentage, and the beta crystal-type nucleater mass percent is 0.6%.
A kind of 5. MPP power cable protecting pipes according to claim 1, it is characterised in that：The beta crystal-type nucleater is heptan
One kind during diacid calcium, amide compound, red pigment quinacridone are red, the polypropylene are HOPP.
A kind of 6. MPP power cable protecting pipes according to claim 1, it is characterised in that：By percentage to the quality, it is described
The maleic anhydride that polypropylene contains 8%-12% connects branch polypropylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610498362.7A CN107540930A (en) | 2016-06-25 | 2016-06-25 | A kind of MPP power cable protecting pipes |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610498362.7A CN107540930A (en) | 2016-06-25 | 2016-06-25 | A kind of MPP power cable protecting pipes |
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| CN107540930A true CN107540930A (en) | 2018-01-05 |
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| CN201610498362.7A Pending CN107540930A (en) | 2016-06-25 | 2016-06-25 | A kind of MPP power cable protecting pipes |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108641204A (en) * | 2018-05-17 | 2018-10-12 | 姚子巍 | A kind of preparation method of MPP power pipes |
| CN108794897A (en) * | 2018-05-30 | 2018-11-13 | 上海交通大学 | A kind of polypropylene-base high-voltage cable insulating layer material and preparation method thereof |
| CN109586219A (en) * | 2018-11-27 | 2019-04-05 | 广东中讯通讯设备实业有限公司 | A kind of high intensity MPP pipe and its manufacturing method |
| CN110964264A (en) * | 2019-12-26 | 2020-04-07 | 威海市广通塑胶制品有限公司 | Heat-resistant MPP cable protection pipe and preparation method thereof |
| CN111647228A (en) * | 2020-06-10 | 2020-09-11 | 杭州联通管业有限公司 | Anti-oxidation MPP power tube and preparation method thereof |
| CN114507394A (en) * | 2022-02-17 | 2022-05-17 | 安徽凯越电力杆塔有限公司 | Colored antioxidant MPP protection tube and processing method thereof |
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| CN103012956A (en) * | 2012-12-11 | 2013-04-03 | 浙江华丰管业有限公司 | Sun-proof composite modified polypropylene pipe for power cable protection |
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| CN104558847A (en) * | 2015-01-07 | 2015-04-29 | 方文川 | Homo-polypropylene beta nucleating agent and preparation method thereof |
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| CN102086280A (en) * | 2009-12-04 | 2011-06-08 | 中国石油化工股份有限公司 | Preparation method of polypropylene nano composite material |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108641204A (en) * | 2018-05-17 | 2018-10-12 | 姚子巍 | A kind of preparation method of MPP power pipes |
| CN108794897A (en) * | 2018-05-30 | 2018-11-13 | 上海交通大学 | A kind of polypropylene-base high-voltage cable insulating layer material and preparation method thereof |
| CN109586219A (en) * | 2018-11-27 | 2019-04-05 | 广东中讯通讯设备实业有限公司 | A kind of high intensity MPP pipe and its manufacturing method |
| CN110964264A (en) * | 2019-12-26 | 2020-04-07 | 威海市广通塑胶制品有限公司 | Heat-resistant MPP cable protection pipe and preparation method thereof |
| CN111647228A (en) * | 2020-06-10 | 2020-09-11 | 杭州联通管业有限公司 | Anti-oxidation MPP power tube and preparation method thereof |
| CN114507394A (en) * | 2022-02-17 | 2022-05-17 | 安徽凯越电力杆塔有限公司 | Colored antioxidant MPP protection tube and processing method thereof |
| CN114507394B (en) * | 2022-02-17 | 2024-01-26 | 安徽凯越电力杆塔有限公司 | Colored antioxidant MPP protection tube and processing method thereof |
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