CN110041657A - A kind of wear-resisting electromagnetic shielding modified polyformaldehyde material - Google Patents
A kind of wear-resisting electromagnetic shielding modified polyformaldehyde material Download PDFInfo
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- CN110041657A CN110041657A CN201910277515.9A CN201910277515A CN110041657A CN 110041657 A CN110041657 A CN 110041657A CN 201910277515 A CN201910277515 A CN 201910277515A CN 110041657 A CN110041657 A CN 110041657A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L59/00—Compositions of polyacetals; Compositions of derivatives of polyacetals
- C08L59/04—Copolyoxymethylenes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3009—Sulfides
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
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- Medicinal Chemistry (AREA)
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Abstract
The invention discloses a kind of wear-resisting electromagnetic shielding modified polyformaldehyde materials, and score meter by weight includes following component: 70 ~ 90 parts of polyformaldehyde, 10 ~ 20 parts of molybdenum disulfide, 5 ~ 10 parts of conductive black, 0.5 ~ 5 part of liquid dispersant, 0.2 ~ 0.8 part of matal deactivator, 0.2 ~ 0.8 part of thermal stabilizer, 0.2 ~ 0.5 part of antioxidant.Modified polyformaldehyde material of the invention, which is suitable for the correlations such as communication base station, the particular surroundings such as weather-proof, long-acting lubrication, electromagnetic shielding.
Description
Technical field
The present invention relates to technical field of polymer materials, more particularly to it is a kind of for communication apparatus, communication base station it is resistance to
Electric mill magnetic screen modified polyformaldehyde material.
Background technique
Polyformaldehyde (POM) has good lubricity and wearability, the disadvantage is that hot mastication uses or long-acting use
Lubricity decline, weather-proof difference.
Communication apparatus is electromagnetically shielded interference equal spies less due to the requirement of its work particularity, weather-proof good, wear-resisting stabilization
Sign.The development of 5G technology, the amplification of power, it is desirable that internal structure weatherability, stability is more preferable, while in order to reduce interference, right
It is also stepped up in the requirement of electromagnetic shielding.
Existing imported material has part to be electromagnetically shielded POM, reaches requirement using materials such as carbon fiber, metallic fibers, resistance to
Feature decline is ground, the delivery cycle is long, expensive.
Summary of the invention
In view of the deficienciess of the prior art, gathering the object of the invention is that providing the wear-resisting electromagnetic shielding modification of one kind
Formaldehyde materials have the particular surroundings such as weather-proof, long-acting lubrication, electromagnetic shielding suitable for correlations such as communication base stations.
To achieve the goals above, the technical solution adopted by the present invention is that such: a kind of wear-resisting electromagnetic shielding is modified poly-
Formaldehyde materials, by weight score meter include following component: 70 ~ 90 parts of polyformaldehyde, 10 ~ 20 parts of molybdenum disulfide, conductive black 5 ~ 10
Part, 0.5 ~ 5 part of liquid dispersant, 0.2 ~ 0.8 part of matal deactivator, 0.2 ~ 0.8 part of thermal stabilizer, 0.2 ~ 0.5 part of antioxidant.
As a preferred embodiment, the polyformaldehyde is the high flowing polyformaldehyde of copolymerization.
As a preferred embodiment, the liquid dispersant is organic silicone oil.
As a preferred embodiment, the matal deactivator is antioxidant 1024.
As a preferred embodiment, the thermal stabilizer is melamine cyanurate.
As a preferred embodiment, the antioxidant is three-dimensional Hinered phenols antioxidant.
The invention also discloses a kind of methods for preparing the wear-resisting electromagnetic shielding modified polyformaldehyde material, including walk as follows
It is rapid: to weigh 70 ~ 90 parts of polyformaldehyde, 10 ~ 20 parts of molybdenum disulfide, 5 ~ 10 parts of conductive black, 0.5 ~ 5 part of liquid dispersant, metallic blunt
0.2 ~ 0.8 part of agent, 0.2 ~ 0.8 part of thermal stabilizer, 0.2 ~ 0.5 part of antioxidant be uniformly mixed, then use double screw extruder
Melting extrusion, granulation obtain modified polyformaldehyde material.
As a preferred embodiment, since molybdenum disulfide and conductive black are nano-scale particle, special stirring need to be used
Hybrid mode: first stirring evenly polyformaldehyde particle 2 ~ 5 minutes added with machine silicon oil at high speed, and it is whole to be conducive to polyformaldehyde particle surface
Uniformly there is adhesive force, then molybdenum disulfide and conductive black are added in blender, make molybdenum disulfide and conductive black nanoscale
Particle is uniformly attached to polyformaldehyde particle surface, reduces dust pollution.
As a preferred embodiment, specific melting temperature is set as 160 DEG C ~ 190 DEG C when being melted using double screw extruder.
Compared with prior art, beneficial effects of the present invention:
(1) molybdenum disulfide with excellent greasy property is used, possesses good stability, while two sulphur at high temperature under high pressure
The diamagnetism for changing molybdenum is very prominent；
(2) using the high flowing polyformaldehyde of copolymerization as basic raw material, kematal has excellent mechanical property, good
Mobility is more advantageous to the dispersion of molybdenum disulfide；
(3) liquid dispersant used improves dispersion effect for organic silicone oil；
(4) matal deactivator has been used, has reduced molybdenum disulfide for the corrosiveness of copper and its alloy.
Specific embodiment
The invention will be further described combined with specific embodiments below.Following embodiment is only used for clearly illustrating
Technical solution of the present invention, and not intended to limit the protection scope of the present invention.
Embodiment 1:
A kind of wear-resisting electromagnetic shielding modified polyformaldehyde material, by weight score meter include following component: 70 parts of polyformaldehyde, curing
10 parts of molybdenum, 5 parts of conductive black, 0.5 part of liquid dispersant, 0.2 part of matal deactivator, 0.2 part of thermal stabilizer, 0.2 part of antioxidant.
Wherein, using space flight class molybdenum disulfide, partial size is small, scattered, and system entirety is promoted using special molybdenum disulfide
Abrasion resistant effect, while increasing magnetic screen advantageous feature.Conductive black is further added, increases electrical shielding advantageous feature, specially
Degussa conductive black.
Specifically, the polyformaldehyde is the high flowing polyformaldehyde of copolymerization, promoted by copolymerization high fluidity polyoxymethylene substrate
Material mechanical performance and processing performance；The polyformaldehyde that the present invention uses is specially Polyplastics POM M90-44 or Dupont
100P。
Specifically, the liquid dispersant is organic silicone oil, dispersion is further increased using organic silicone oil, compatibility and outside
Lubricant effect；The organic silicone oil that the present invention uses is DOW CORNING organic silicone oil PMX200.
Specifically, the matal deactivator is antioxidant 1024, molybdenum disulfide is reduced to metal using matal deactivator
It influences；Matal deactivator is specially BASF product.
Specifically, the thermal stabilizer is melamine cyanurate, polyformaldehyde processing is reduced using thermal stabilizer and is produced
Stability in product use process.
Specifically, the antioxidant is three-dimensional Hinered phenols antioxidant, reduced in polyformaldehyde process using antioxidant
Decomposition and smell；Specially BASF 245.
The invention also discloses a kind of methods for preparing the wear-resisting electromagnetic shielding modified polyformaldehyde material, including walk as follows
It is rapid: to weigh 70 parts of polyformaldehyde, 10 parts of molybdenum disulfide, 5 parts of conductive black, 0.5 part of liquid dispersant, 0.2 part of matal deactivator, heat
0.2 part of stabilization agent, 0.2 part of antioxidant be uniformly mixed, then using double screw extruder melting extrusion, be granulated, obtain modified poly-
Formaldehyde materials.
Specifically, the special mode that is stirred need to be used since molybdenum disulfide and conductive black are nano-scale particle: first
Polyformaldehyde particle is stirred evenly 2 ~ 5 minutes added with machine silicon oil at high speed, is conducive to polyformaldehyde particle surface all uniformly with attached
Put forth effort, then molybdenum disulfide and conductive black are added in blender, keeps molybdenum disulfide and conductive black nano-scale particle uniformly attached
In polyformaldehyde particle surface, reduce dust pollution.
Specifically, specific melting temperature is set as 160 DEG C ~ 190 DEG C when being melted using double screw extruder.
Embodiment 2:
The present embodiment the difference from embodiment 1 is that, a kind of wear-resisting electromagnetic shielding modified polyformaldehyde material, by weight score meter packet
Include following component: 80 parts of polyformaldehyde, 15 parts of molybdenum disulfide, 7 parts of conductive black, 3 parts of liquid dispersant, 0.5 part of matal deactivator,
0.5 part of thermal stabilizer, 0.3 part of antioxidant.
The invention also discloses a kind of methods for preparing the wear-resisting electromagnetic shielding modified polyformaldehyde material, including walk as follows
It is rapid: to weigh 80 parts of polyformaldehyde, 15 parts of molybdenum disulfide, 7 parts of conductive black, 3 parts of liquid dispersant, 0.5 part of matal deactivator, heat peace
Determine 0.5 part of agent, 0.3 part of antioxidant be uniformly mixed, then using double screw extruder melting extrusion, be granulated, obtain modified poly- first
Aldehyde material.
Embodiment 3:
The present embodiment the difference from embodiment 1 is that, a kind of wear-resisting electromagnetic shielding modified polyformaldehyde material, by weight score meter packet
Include following component: 90 parts of polyformaldehyde, 20 parts of molybdenum disulfide, 10 parts of conductive black, 5 parts of liquid dispersant, matal deactivator 0.8
Part, 0.8 part of thermal stabilizer, 0.5 part of antioxidant.
The invention also discloses a kind of methods for preparing the wear-resisting electromagnetic shielding modified polyformaldehyde material, including walk as follows
It is rapid: to weigh 90 parts of polyformaldehyde, 20 parts of molybdenum disulfide, 10 parts of conductive black, 5 parts of liquid dispersant, 0.8 part of matal deactivator, heat
0.8 part of stabilization agent, 0.5 part of antioxidant be uniformly mixed, then using double screw extruder melting extrusion, be granulated, obtain modified poly-
Formaldehyde materials.
In conclusion carrying out properties of product detection, testing result such as 1 institute of table to the resulting polyformaldehyde material of embodiment 1 ~ 3
Show.
Table 1
Friction and wear behavior test is carried out to the remodeling polyformaldehyde material of embodiment 1 ~ 3, design parameter is as follows: coefficient of friction is
0.05 ~ 0.2, abrasion loss is 0.211 ~ 0.312mm3, wear scar width is 1.05 ~ 1.72mm.
Surface resistivity test, material surface resistivity of the invention are carried out to the remodeling polyformaldehyde material of embodiment 1 ~ 3
About 10 6 ~ 8 power ohms, and 16 power ohms that common M90-44 is 10.
In conclusion modified polyformaldehyde material of the invention by with after existing material property contrast test, hence it is evident that it is excellent
In common polyformaldehyde material.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of wear-resisting electromagnetic shielding modified polyformaldehyde material, which is characterized in that score meter includes following component by weight: poly- first
70 ~ 90 parts of aldehyde, 10 ~ 20 parts of molybdenum disulfide, 5 ~ 10 parts of conductive black, 0.5 ~ 5 part of liquid dispersant, matal deactivator 0.2 ~ 0.8
Part, 0.2 ~ 0.8 part of thermal stabilizer, 0.2 ~ 0.5 part of antioxidant.
2. a kind of wear-resisting electromagnetic shielding modified polyformaldehyde material according to claim 1, it is characterised in that: the polyformaldehyde
For the high flowing polyformaldehyde of copolymerization.
3. a kind of wear-resisting electromagnetic shielding modified polyformaldehyde material according to claim 1, it is characterised in that: the liquid point
Powder is organic silicone oil.
4. a kind of wear-resisting electromagnetic shielding modified polyformaldehyde material according to claim 1, it is characterised in that: the metallic blunt
Agent is antioxidant 1024.
5. a kind of wear-resisting electromagnetic shielding modified polyformaldehyde material according to claim 1, it is characterised in that: the heat is stable
Agent is melamine cyanurate.
6. a kind of wear-resisting electromagnetic shielding modified polyformaldehyde material according to claim 1, it is characterised in that: the antioxidant
For three-dimensional Hinered phenols antioxidant.
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| CN201910277515.9A CN110041657A (en) | 2019-04-08 | 2019-04-08 | A kind of wear-resisting electromagnetic shielding modified polyformaldehyde material |
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| CN201910277515.9A CN110041657A (en) | 2019-04-08 | 2019-04-08 | A kind of wear-resisting electromagnetic shielding modified polyformaldehyde material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114381085A (en) * | 2021-11-17 | 2022-04-22 | 长飞光纤光缆股份有限公司 | Ultralow-friction-coefficient central tube type air-blowing micro cable and preparation method of sheath thereof |
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| JPS6028063A (en) * | 1983-07-27 | 1985-02-13 | Dai Ichi Seiko Co Ltd | Guide post for magnetic tape |
| JP2006348265A (en) * | 2005-05-18 | 2006-12-28 | Asahi Kasei Chemicals Corp | Polyacetal resin composition |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114381085A (en) * | 2021-11-17 | 2022-04-22 | 长飞光纤光缆股份有限公司 | Ultralow-friction-coefficient central tube type air-blowing micro cable and preparation method of sheath thereof |
| CN114381085B (en) * | 2021-11-17 | 2024-01-09 | 长飞光纤光缆股份有限公司 | Preparation method of ultralow friction coefficient central tube type air-blown micro cable and sheath thereof |
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