CN101824181B - Magnetically-conductive plastic heat-shrinkable sleeve and preparation method thereof - Google Patents
Magnetically-conductive plastic heat-shrinkable sleeve and preparation method thereof Download PDFInfo
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- CN101824181B CN101824181B CN 200910163446 CN200910163446A CN101824181B CN 101824181 B CN101824181 B CN 101824181B CN 200910163446 CN200910163446 CN 200910163446 CN 200910163446 A CN200910163446 A CN 200910163446A CN 101824181 B CN101824181 B CN 101824181B
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Abstract
The invention discloses a magnetically-conductive plastic heat-shrinkable sleeve and a preparation method thereof. As everyone knows, various electromagnetic components and parts generate magnetic fields in work so as to further influence peripheral instruments and equipment to a certain extent. In conventional methods, magnetically-conductive coatings or magnetically-conductive cups are adopted to magnetically shield the electromagnetic components and parts; however, the operation is time-consuming, labor-consuming, low in production efficiency and high in manufacturing cost. For overcoming the defects, the invention discloses the method for preparing the magnetically-conductive plastic heat-shrinkable sleeve by adding magnetic powder into the plastic heat-shrinkable sleeve. The magnetically-conductive plastic heat-shrinkable sleeve of the invention is directly sleeved on the outer surfaces of the electromagnetic components and parts, thereby effectively performing magnetic shieldingand having the advantages of simple operation, low cost and high production efficiency.
Description
Technical field
The present invention relates to a kind of making method of thermal contraction casing tube, especially relate to a kind of magnetically-conductive plastic heat-shrinkable sleeve and preparation method thereof.
Background technology
As everyone knows, all kinds of electromagnetism components and parts can produce magnetic field when work, peripheral plant and instrument is affected, these class components and parts are modal inductance, elements such as transformer, when working, the electromagnetism components and parts produce the influence that cause in magnetic field in order to reduce, present method is that the electromagnetism components and parts are carried out magnetic shielding, namely be that direct outside surface at the electromagnetism components and parts is coated with the magnetic conduction coating that last layer is made of glue, or cover a magnetic conduction cup, with glue components and parts and magnetic conduction cup sealing and fixing are got up again, because glue curing needs the regular hour, such operation is not only wasted time and energy, and production efficiency is low, manufacturing cost is also high.
Summary of the invention
The shortcoming that waste time and energy when electromagnetism unit device is carried out magnetic shielding in order to solve at present, production efficiency is low, manufacturing cost is high, the present invention proposes the preparation method of magnetically-conductive plastic heat-shrinkable sleeve, adopt magnetically-conductive plastic heat-shrinkable sleeve of the present invention directly to be socketed in the outside surface of electromagnetism components and parts, can effectively carry out magnetic shielding, and it is simple to operate, cost is low, the production efficiency height.
The technical solution adopted for the present invention to solve the technical problems: a kind of formula for a product of magnetically-conductive plastic heat-shrinkable sleeve is to add magnetic in the material prescription of plastic heat-shrinkable sleeve, its material is formed and is comprised necessary material and washability material, must comprise thermoplastic resin and magnetic by material, the washability material comprises filler, coupling agent, processing aid, oxidation inhibitor and tinting material, and material composition is controlled as follows by weight:
Necessary material:
100 parts of thermoplastic resins, comprise in ethylene vinyl acetate (EVA), ethylene ethyl acrylate copolymer (EEA), Low Density Polyethylene (LDPE), the linear low density polyethylene (LLDPE) one or more, when adding multiple material, described content is the total content of various materials and proportioning between the various material is unrestricted;
Magnetic part 10-900 part, magnetic comprise one or more in Fe-Si-Al magnetic, MnZn magnetic or the nickel zinc magnetic, and when adding multiple material, described content is the total content of various materials and proportioning between the various material is unrestricted; The granularity of magnetic can be chosen more than 50 orders, magnetic that can preferred 1000 order to 3000 order granularities;
The washability material:
Filler is below 500 parts, and filler comprises one or more in calcium carbonate, aluminium hydroxide, the magnesium hydroxide, and when adding multiple material, described content is the total content of various materials and proportioning between the various material is unrestricted;
Coupling agent is below 50 parts;
Processing aid is below 100 parts, and processing aid comprises one or more in Magnesium Stearate, the Zinic stearas, and when adding multiple material, described content is the total content of various materials and proportioning between the various material is unrestricted;
Oxidation inhibitor is below 50 parts;
Tinting material is below 100 parts.
The invention allows for the method with above-mentioned material produce magnetically-conductive plastic heat-shrinkable sleeve, comprise and make material, extrusion moulding, crosslinked, expansion fixating shape step,
The invention has the beneficial effects as follows: the magnetic shielding to the electromagnetism components and parts is simple to operate, and cost is low, the production efficiency height.
Embodiment:
The invention provides a kind of magnetically-conductive plastic heat-shrinkable sleeve, its prescription comprises following material by weight:
Necessary material:
100 parts of thermoplastic resins comprise in ethylene vinyl acetate (EVA), ethylene ethyl acrylate copolymer (EEA), Low Density Polyethylene (LDPE), the linear low density polyethylene (LLDPE) one or more; When adding multiple material, described content is the total content of various materials and proportioning between the various material is unrestricted;
Magnetic part 10-900 part, magnetic comprise one or more in Fe-Si-Al magnetic, MnZn magnetic or the nickel zinc magnetic, and when adding multiple material, described content is the total content of various materials and proportioning between the various material is unrestricted; The granularity of magnetic can be chosen more than 50 orders, magnetic that can preferred 1000 order to 3000 order granularities;
The washability material:
Filler is below 500 parts, and filler comprises one or more in calcium carbonate, aluminium hydroxide, the magnesium hydroxide, and when adding multiple material, described content is the total content of various materials and proportioning between the various material is unrestricted;
Coupling agent can be chosen below 50 parts;
The processing aid ratio can be chosen below 100 parts, and processing aid comprises one or more in Magnesium Stearate, the Zinic stearas, and when adding multiple material, described content is the total content of various materials and proportioning between the various material is unrestricted;
Antioxidant content can be chosen below 50 parts;
Colorant content can be chosen below 100 parts.
The present invention also proposes the preparation method with above-mentioned material produce magnetically-conductive plastic heat-shrinkable sleeve, and it comprises following production stage:
First step is the step of making material, with above-mentioned material prescription carry out batch mixing, extrude, pelletizing produces the magnetic conduction extruded material;
Second step is the extrusion moulding step, and the magnetic conduction extruded material that first step is produced passes through extruder for shaping, makes the magnetically-conductive plastic sleeve pipe;
The 3rd step is the crosslinking Treatment step, utilizes rumbatron or radiative material that the magnetically-conductive plastic sleeve pipe of producing in second step is carried out the radiation crosslinking process for producing and goes out magnetically-conductive plastic sleeve pipe through crosslinking Treatment;
The 4th step is the expansion fixating shape step, and the crosslinked magnetic conduction sleeve pipe that the 3rd step produced is produced magnetically-conductive plastic heat-shrinkable sleeve through expanding typing by dilatation mold after heating.
Claims (8)
1. magnetic shielding product that the electromagnetism components and parts is carried out magnetic shielding, it is characterized in that, described magnetic shielding product is to carry out the magnetically-conductive plastic heat-shrinkable sleeve of magnetic shielding for the outside surface that directly is socketed in the electromagnetism components and parts, the material prescription of described magnetic shielding product comprises necessary material and washability material, described must material be thermoplastic resin and magnetic, described washability material comprises filler, coupling agent, processing aid, oxidation inhibitor and tinting material, its prescription is by weight: 100 parts of thermoplastic resins, magnetic 10-900 part, filler is below 500 parts, coupling agent is below 50 parts, processing aid is below 100 parts, antioxidant content is below 50 parts, and tinting material is below 100 parts.
2. magnetic shielding product according to claim 1, it is characterized in that: described magnetic comprises one or more in Fe-Si-Al magnetic, MnZn magnetic or the nickel zinc magnetic, when adding multiple material, described content is the total content of various materials and proportioning between the various material is unrestricted.
3. magnetic shielding product according to claim 2, it is characterized in that: described granularity of magnet powder is more than 50 orders.
4. magnetic shielding product according to claim 3 is characterized in that: preferred 1000 order to 3000 orders of described granularity of magnet powder.
5. magnetic shielding product according to claim 1, it is characterized in that: described thermoplastic resin comprises one or more in ethylene vinyl acetate (EVA), ethylene ethyl acrylate copolymer (EEA), Low Density Polyethylene (LDPE), the linear low density polyethylene (LLDPE), when adding multiple material, described content is the total content of various materials and proportioning between the various material is unrestricted.
6. magnetic shielding product according to claim 1, it is characterized in that: described filler comprises one or more in calcium carbonate, aluminium hydroxide, the magnesium hydroxide, when adding multiple material, described content is the total content of various materials and proportioning between the various material is unrestricted; Described processing aid comprises one or more in Magnesium Stearate, the Zinic stearas, and when adding multiple material, described content is the total content of various materials and proportioning between the various material is unrestricted.
7. the preparation method of each described magnetic shielding product of claim 1 to 6 is characterized in that: also comprise following production stage:
The one, makes material: with formula materials carry out batch mixing, extrude, pelletizing prepares the magnetic conduction extruded material, described formula materials comprises necessary material and washability material, described must material be thermoplastic resin and magnetic, described washability material comprises filler, coupling agent, processing aid, oxidation inhibitor and tinting material, its prescription is by weight: 100 parts of thermoplastic resins, magnetic 10-900 part, filler is below 500 parts, coupling agent is below 50 parts, processing aid is below 100 parts, antioxidant content is below 50 parts, and tinting material is below 100 parts;
The 2nd, extrusion moulding: utilize the magnetic conduction extruded material of producing in the first step to prepare the magnetically-conductive plastic sleeve pipe by forcing machine;
The 3rd. crosslinking Treatment: utilize rumbatron or radiative material that the magnetically-conductive plastic sleeve pipe of producing in second step is carried out crosslinking Treatment and prepare crosslinked magnetically-conductive plastic sleeve pipe;
The 4th. expansion typing: the crosslinked magnetic conduction sleeve pipe of producing in the third step is heated and utilizes dilatation mold to expand typing preparation magnetically-conductive plastic heat-shrinkable sleeve.
8. the method that the electromagnetism components and parts are carried out magnetic shielding is characterized in that: adopt each described magnetic shielding product of claim 1 to 6 directly to be socketed in the outside surface of electromagnetism components and parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910163446 CN101824181B (en) | 2009-03-06 | 2009-08-13 | Magnetically-conductive plastic heat-shrinkable sleeve and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910127471 | 2009-03-06 | ||
| CN200910127471.8 | 2009-03-06 | ||
| CN 200910163446 CN101824181B (en) | 2009-03-06 | 2009-08-13 | Magnetically-conductive plastic heat-shrinkable sleeve and preparation method thereof |
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| Publication Number | Publication Date |
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| CN101824181A CN101824181A (en) | 2010-09-08 |
| CN101824181B true CN101824181B (en) | 2013-09-18 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102020802A (en) * | 2010-12-03 | 2011-04-20 | 东莞三联热缩材料有限公司 | Magnetic double-wall heat shrinkage casing |
| CN102020798A (en) * | 2010-12-03 | 2011-04-20 | 东莞三联热缩材料有限公司 | Magnetic single-wall heat shrinkage sleeve |
| CN103342847A (en) * | 2013-07-01 | 2013-10-09 | 江苏达胜热缩材料有限公司 | Magnetism conducted single wall heat shrink tubing and preparation method thereof |
| CN103450590A (en) * | 2013-08-22 | 2013-12-18 | 吴江龙硕金属制品有限公司 | Magnetic plastic and preparation method thereof |
| CN104540067A (en) * | 2014-12-30 | 2015-04-22 | 哈尔滨固泰电子有限责任公司 | Electronic horn made of magnetic conductive material |
| CN105175873A (en) * | 2015-08-17 | 2015-12-23 | 深圳市沃尔核材股份有限公司 | Soft reflective heat-shrinkable protecting pipe and production method thereof |
| CN106317591A (en) * | 2016-08-18 | 2017-01-11 | 苏州泰斯拓伟机电设备有限公司 | Magnetic conductive heat shrink tube and preparation method thereof |
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| CN1629216A (en) * | 2003-12-16 | 2005-06-22 | 深圳市沃尔热缩材料有限公司 | Halogen-free flame-retardant thermal-shrinkage sleeve materials and sleeve prepared thereby |
| CN101225199A (en) * | 2007-01-16 | 2008-07-23 | 深圳市沃尔核材股份有限公司 | Material used for halogen-free flame retardant heat shrinkable sheathing and cross-linking cable wire and preparation method thereof |
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| CN1629216A (en) * | 2003-12-16 | 2005-06-22 | 深圳市沃尔热缩材料有限公司 | Halogen-free flame-retardant thermal-shrinkage sleeve materials and sleeve prepared thereby |
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| CN101824181A (en) | 2010-09-08 |
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Effective date of registration: 20210621 Address after: 518118 4th floor, phase III factory building, North Lanjing Road, Longtian street, Pingshan District, Shenzhen City, Guangdong Province Patentee after: SHENZHEN WOER THERMAL SHRINKAGE Co.,Ltd. Address before: 518052 Guangdong city of Shenzhen province Nanshan District Xili Town Industrial Park, Waldo Patentee before: Shenzhen Woer Heat-shrinkable Material Co.,Ltd. |