CN101701083A - Electromagnetic shielding polyethylene material and preparation process thereof - Google Patents
Electromagnetic shielding polyethylene material and preparation process thereof Download PDFInfo
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- CN101701083A CN101701083A CN200910212436A CN200910212436A CN101701083A CN 101701083 A CN101701083 A CN 101701083A CN 200910212436 A CN200910212436 A CN 200910212436A CN 200910212436 A CN200910212436 A CN 200910212436A CN 101701083 A CN101701083 A CN 101701083A
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Abstract
The invention relates to an organic polymer composite material, in particular to a polyethylene material capable of electromagnetic shielding and a preparation method thereof. The polyethylene material comprises the following components in percentage by weight: 49.5-90 percent of polyethylene, 5-35 percent of carbon fiber, 2-30 percent of conductive graphite, 0.2-1.0 percent of antioxidant, 0.2-2.0 percent of coupling agent and 0.3-5.5 percent of other auxiliary agent. The electromagnetic shielding polyethylene material can replace metal raw materials to produce spare and accessory parts or casings, and combines the favorable performance of thermoplastic plastics which can be processed easily and the electromagnetic shielding function of metal materials, therefore, the production purchasing of the electromagnetic shielding polyethylene material can be realized conveniently, and the relevant cost can be greatly reduced. The electromagnetic shielding polyethylene material also has the advantages of acid-resistant and alkali-resistant corrosion, certain mechanical strength and temperature toleration, thereby comprehensively improving the competitiveness.
Description
Technical field
The present invention relates to a kind of organic polymer composite, more particularly, relate to a kind of electromagnetic shielding polyethylene material and preparation method thereof.
Background technology
At present, the application with the plastics alternative metals constantly enlarges in the world, and scientist all over the world actively seeks new functional thermoplastics by various tests, also becomes enterprise and strives for more families and the important component part of extending volume growth.
But the electroconductibility of metal and capability of electromagnetic shielding are that common plastics are not available.And, all relate to the part that need have electro-magnetic screen function at present in civil electronic electrical equipment/toy/communication/cable/many fields such as military project.This series product market substantially all has to use raw material metal production at present, and it is big to stand the process for processing difficulty, and link is many, cost height, a series of shortcomings that production efficiency is low or the like.These are the problem to be solved in the present invention just.When not needing higher heatproof requirement and requirement of strength, can use and of the present inventionly have the electro-magnetic screen function polyethylene and carry out injection moulding or extrude production as starting material, cost reduces significantly, and the raising of production efficiency several times contributes for the lightweight of product and returnability simultaneously; The advantage that also has the not available acid-alkali-corrosive-resisting of raw material metal simultaneously.
Series product of the present invention fully meet European Union's " waste and old electric electric installation " (WEEE) and " objectionable impurities limits the use of instruction " (RoHS) rules and other environmental regulations, and strict Application Areas can both be used.
Summary of the invention
The objective of the invention is to effectively overcome the defective of prior art, a kind of environmental protection electromagnetic shielding polyethylene starting material of can the alternative metals starting material producing spare and accessory parts or shell are provided.
Technical scheme provided by the invention is as follows: electromagnetic shielding polyethylene material, by following composition by weight forming, polyethylene (high-density, middle density, low density and ultrahigh molecular weight polyethylene(UHMWPE) all can): 49.5-90%, carbon fiber: 5-35%; Electrically conductive graphite: 2-30%; Antioxidant: 0.2-1.0%; Coupling agent: 0.2-2.0%; Other auxiliary agents: 0.3-5.5%.
The preparation method of electromagnetic shielding polyethylene material of the present invention; comprise the steps: earlier with polyethylene, other auxiliary agents proportionally after the weighing in mixer low speed mixing 10 minutes; add carbon fiber in proportion by the side and electrically conductive graphite is mixing extrudes under the screw combinations situation that medium tenacity is sheared through twin screw extruder again, water-cooled tie rod pelletizing (die face cutting or water ring pelletizing all can) makes the anti-polythene material of electromagnetic shielding through screening and dewatering.
The present invention has effectively overcome the defective of existing polythene material, has the following advantages:
A kind of electromagnetic shielding polyethylene material of the present invention can be produced spare and accessory parts or shell by the alternative metals starting material, he promptly have simultaneously thermoplastics good be convenient to processing characteristics, the electro-magnetic screen function that has simultaneously metal material again, thereby production procurement is convenient, relevant cost declines to a great extent, the characteristics and certain mechanical strength and the temperature tolerance that also have acid-alkali-corrosive-resisting simultaneously, comprehensive like this competitive power that improved.
Embodiment
Below be the most preferred embodiment of electromagnetic shielding polyethylene raw material of the present invention and preparation method thereof, therefore do not limit protection scope of the present invention.
Embodiment one, and a kind of electromagnetic shielding polyethylene raw material is provided, and forms polyethylene by weight by following composition: 65%; Carbon fiber: 10%; Electrically conductive graphite: 23%; Oxidation inhibitor: 1%; Coupling agent: 0.5%; Other auxiliary agents: 0.5%;
Earlier with polyethylene, oxidation inhibitor, coupling agent, other auxiliary agents proportionally after the weighing in mixer low speed mixing 10 minutes, mixer adopts low speed mixing, paddle should with the barrel gap less than 0.5 centimetre, the supplementary material mixed effect should visual various particles and powder even substantially, do not have obvious agglomerate or gather; Twin screw extruder uses 36 length-to-diameter ratios, and medium tenacity is sheared; Carbon fiber and electrically conductive graphite are added in proportion by the side; Adopt water-cooled tie rod pelletizing mode, promptly make electromagnetic shielding polyethylene material through screening and dewatering.
Claims (2)
1. an electromagnetic shielding polyethylene material is characterized in that: form polyethylene by weight by following composition: 49.5-90%, carbon fiber: 5-35%; Electrically conductive graphite: 2-30%; Antioxidant: 0.2-1.0%; Coupling agent: 0.2-2.0%; Other auxiliary agents: 0.3-5.5%.
2. method for preparing electromagnetic shielding polyethylene material, it is characterized in that: comprise the steps: earlier with polyethylene, antioxidant, coupling agent, other auxiliary agents proportionally after the weighing in mixer low speed mixing 10 minutes, add carbon fiber in proportion by the side and electrically conductive graphite is mixing extrudes under the screw combinations situation that medium tenacity is sheared through twin screw extruder again, the pelletizing of water-cooled tie rod makes electromagnetic shielding polyethylene material through screening and dewatering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910212436A CN101701083A (en) | 2009-11-03 | 2009-11-03 | Electromagnetic shielding polyethylene material and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910212436A CN101701083A (en) | 2009-11-03 | 2009-11-03 | Electromagnetic shielding polyethylene material and preparation process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101701083A true CN101701083A (en) | 2010-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910212436A Pending CN101701083A (en) | 2009-11-03 | 2009-11-03 | Electromagnetic shielding polyethylene material and preparation process thereof |
Country Status (1)
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| CN (1) | CN101701083A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102093738A (en) * | 2010-12-08 | 2011-06-15 | 兴乐集团宁夏电缆有限公司 | High-performance carbon fiber reinforced coating material and optical cable adopting same |
| CN102241849A (en) * | 2011-06-16 | 2011-11-16 | 上海邦中新材料有限公司 | Carbon-fiber-reinforced polyethylene composite material |
| CN102604194A (en) * | 2012-02-11 | 2012-07-25 | 常州市嘉鹏塑料制品有限公司 | Transparent electromagnetic shielding film |
| CN102898713A (en) * | 2012-11-05 | 2013-01-30 | 科创聚合物(苏州)有限公司 | Manufacturing process of electromagnetic polyethylene material |
| CN104448676A (en) * | 2014-12-29 | 2015-03-25 | 安徽瑞研新材料技术研究院有限公司 | Metal macromolecule alloy shielding material and machining process thereof |
| CN105199389A (en) * | 2015-10-12 | 2015-12-30 | 苏州宽温电子科技有限公司 | Polymer shielding material and preparation method thereof |
| CN107325383A (en) * | 2017-08-29 | 2017-11-07 | 德阳力久云智知识产权运营有限公司 | A kind of cable composite shielding material and preparation method thereof |
| CN107383553A (en) * | 2017-08-29 | 2017-11-24 | 德阳力久云智知识产权运营有限公司 | A kind of conductive polymer composite and preparation method thereof |
| CN108948491A (en) * | 2018-07-04 | 2018-12-07 | 中国地质大学（北京） | A kind of composite material and preparation method with electro-magnetic screen function |
| CN111037776A (en) * | 2018-10-15 | 2020-04-21 | 中广核高新核材科技（苏州）有限公司 | Preparation method of broadband electromagnetic shielding composite material |
-
2009
- 2009-11-03 CN CN200910212436A patent/CN101701083A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102093738A (en) * | 2010-12-08 | 2011-06-15 | 兴乐集团宁夏电缆有限公司 | High-performance carbon fiber reinforced coating material and optical cable adopting same |
| CN102093738B (en) * | 2010-12-08 | 2013-01-02 | 兴乐集团宁夏电缆有限公司 | High-performance carbon fiber reinforced coating material and optical cable adopting same |
| CN102241849A (en) * | 2011-06-16 | 2011-11-16 | 上海邦中新材料有限公司 | Carbon-fiber-reinforced polyethylene composite material |
| CN102604194A (en) * | 2012-02-11 | 2012-07-25 | 常州市嘉鹏塑料制品有限公司 | Transparent electromagnetic shielding film |
| CN102604194B (en) * | 2012-02-11 | 2014-08-20 | 常州树杰塑业有限公司 | Transparent electromagnetic shielding film |
| CN102898713A (en) * | 2012-11-05 | 2013-01-30 | 科创聚合物(苏州)有限公司 | Manufacturing process of electromagnetic polyethylene material |
| CN104448676A (en) * | 2014-12-29 | 2015-03-25 | 安徽瑞研新材料技术研究院有限公司 | Metal macromolecule alloy shielding material and machining process thereof |
| CN105199389A (en) * | 2015-10-12 | 2015-12-30 | 苏州宽温电子科技有限公司 | Polymer shielding material and preparation method thereof |
| CN107325383A (en) * | 2017-08-29 | 2017-11-07 | 德阳力久云智知识产权运营有限公司 | A kind of cable composite shielding material and preparation method thereof |
| CN107383553A (en) * | 2017-08-29 | 2017-11-24 | 德阳力久云智知识产权运营有限公司 | A kind of conductive polymer composite and preparation method thereof |
| CN108948491A (en) * | 2018-07-04 | 2018-12-07 | 中国地质大学（北京） | A kind of composite material and preparation method with electro-magnetic screen function |
| CN111037776A (en) * | 2018-10-15 | 2020-04-21 | 中广核高新核材科技（苏州）有限公司 | Preparation method of broadband electromagnetic shielding composite material |
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