CN101701094A - Electromagnetic shielding polypropylene material and preparation process thereof - Google Patents
Electromagnetic shielding polypropylene material and preparation process thereof Download PDFInfo
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- CN101701094A CN101701094A CN200910212437A CN200910212437A CN101701094A CN 101701094 A CN101701094 A CN 101701094A CN 200910212437 A CN200910212437 A CN 200910212437A CN 200910212437 A CN200910212437 A CN 200910212437A CN 101701094 A CN101701094 A CN 101701094A
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- electromagnetic shielding
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- polypropylene material
- polypropylene
- shielding polypropylene
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Abstract
The invention relates to an organic polymer composite material, in particular to an electromagnetic shielding polypropylene material and a preparation method thereof. The electromagnetic shielding polypropylene comprises the following components in percentage by weight: 49-90 percent of polypropylene, 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 polypropylene 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 polypropylene material can be realized convenient, and the relevant cost can be greatly reduced. The electromagnetic shielding polypropylene 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 polypropylene 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.Do not needing higher heatproof requirement, have simultaneously when requiring in certain intensity and heatproof and work-ing life, can use and of the present inventionly have the electro-magnetic screen function polypropylene and carry out injection moulding or extrude production as starting material, cost reduces significantly, 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 polypropylene 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 polypropylene material, by following composition by weight forming, polypropylene (powder and pellet 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 polypropylene material of the present invention; comprise the steps: earlier with polypropylene, 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-polypropylene material of electromagnetic shielding through screening and dewatering.
The present invention has effectively overcome the defective of existing polypropylene material, has the following advantages:
A kind of electromagnetic shielding polypropylene 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 polypropylene raw material of the present invention, therefore do not limit protection scope of the present invention.
Embodiment one, and a kind of electromagnetic shielding polypropylene raw material is provided, and forms polypropylene by weight by following composition: 65%; Carbon fiber: 25%; Electrically conductive graphite: 8%; Oxidation inhibitor: 1%; Coupling agent: 0.5%; Other auxiliary agents: 0.5%;
Earlier with polypropylene, 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 the environmental protection electromagnetic shielding polypropylene material through screening and dewatering.
Claims (2)
1. an electromagnetic shielding polypropylene material is characterized in that: form polypropylene 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 polypropylene material, it is characterized in that: comprise the steps: earlier with polypropylene, 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 polypropylene material through screening and dewatering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910212437A CN101701094A (en) | 2009-11-03 | 2009-11-03 | Electromagnetic shielding polypropylene material and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910212437A CN101701094A (en) | 2009-11-03 | 2009-11-03 | Electromagnetic shielding polypropylene material and preparation process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101701094A true CN101701094A (en) | 2010-05-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910212437A Pending CN101701094A (en) | 2009-11-03 | 2009-11-03 | Electromagnetic shielding polypropylene material and preparation process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101701094A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102888057A (en) * | 2012-11-05 | 2013-01-23 | 科创聚合物(苏州)有限公司 | Technology for manufacturing electromagnetic organic shielding polypropylene material |
| CN103304888A (en) * | 2012-03-06 | 2013-09-18 | 上海杰事杰新材料(集团)股份有限公司 | Electromagnetic shielding polypropylene composite material, and preparation method and purpose thereof |
| CN103601965A (en) * | 2013-10-23 | 2014-02-26 | 安徽冠泓塑业有限公司 | Composition for preparing plastic barrels |
| CN105932101A (en) * | 2016-05-20 | 2016-09-07 | 广东蒙泰纺织纤维有限公司 | Polypropylene fiber solar microcell and manufacturing method thereof |
| CN106349578A (en) * | 2016-08-31 | 2017-01-25 | 江苏百佳斯特汽车制品有限公司 | Preparation method of carbon fiber composite material for child seats |
| CN106380702A (en) * | 2016-08-31 | 2017-02-08 | 江苏百佳斯特汽车制品有限公司 | Preparation method of material used for car safety seats |
| CN106750967A (en) * | 2016-12-28 | 2017-05-31 | 滁州品之达电器科技有限公司 | A kind of microwave oven shell special plastic |
| 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 |
-
2009
- 2009-11-03 CN CN200910212437A patent/CN101701094A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103304888A (en) * | 2012-03-06 | 2013-09-18 | 上海杰事杰新材料(集团)股份有限公司 | Electromagnetic shielding polypropylene composite material, and preparation method and purpose thereof |
| CN103304888B (en) * | 2012-03-06 | 2017-08-04 | 上海杰事杰新材料(集团)股份有限公司 | A kind of electromagnetic shielding polypropylene composite and its production and use |
| CN102888057A (en) * | 2012-11-05 | 2013-01-23 | 科创聚合物(苏州)有限公司 | Technology for manufacturing electromagnetic organic shielding polypropylene material |
| CN103601965A (en) * | 2013-10-23 | 2014-02-26 | 安徽冠泓塑业有限公司 | Composition for preparing plastic barrels |
| CN103601965B (en) * | 2013-10-23 | 2015-10-28 | 安徽冠泓塑业有限公司 | A kind of for the preparation of plastic tank composition |
| CN105932101A (en) * | 2016-05-20 | 2016-09-07 | 广东蒙泰纺织纤维有限公司 | Polypropylene fiber solar microcell and manufacturing method thereof |
| CN106349578A (en) * | 2016-08-31 | 2017-01-25 | 江苏百佳斯特汽车制品有限公司 | Preparation method of carbon fiber composite material for child seats |
| CN106380702A (en) * | 2016-08-31 | 2017-02-08 | 江苏百佳斯特汽车制品有限公司 | Preparation method of material used for car safety seats |
| CN106750967A (en) * | 2016-12-28 | 2017-05-31 | 滁州品之达电器科技有限公司 | A kind of microwave oven shell special plastic |
| 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 |
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