CN106433560A - Method for preparing wave absorbing materials by tape casting - Google Patents
Method for preparing wave absorbing materials by tape casting Download PDFInfo
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- CN106433560A CN106433560A CN201610598445.3A CN201610598445A CN106433560A CN 106433560 A CN106433560 A CN 106433560A CN 201610598445 A CN201610598445 A CN 201610598445A CN 106433560 A CN106433560 A CN 106433560A
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- absorbing material
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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Abstract
The invention discloses a method for preparing wave absorbing materials by tape casting. The method comprises the following steps: adding 90 to 110 parts of solvents, 80 to 90 parts of wave absorbing powder, and 8 to 12 parts of dispersants in parts by weight into a ball mill to carry out ball milling, then adding 25 to 60 parts of binders to carry out ball milling for a second time, and adding thickeners to adjust the viscosity at 4000 to 12000 mPa.s, finally carrying out knife coating on slurries, baking and rolling to be put in storage. The method for preparing the wave absorbing materials by tape casting uses water instead of organic solvents and water-based latex materials instead of thermal elastic polymer rubber, and assists with appropriate amounts of the dispersants and the thickeners to prepare the wave absorbing plate materials. The prepared wave absorbing plate materials have high magnetic permeability of being 50 to 60 (1MHz) and good temperature resistance, can keep the device stability at the temperature of 120 DEG C for a long time, and are further free of pollution and harmless to human bodies.
Description
Technical field
The invention belongs to electromagnetic protection technical field, specifically, it is related to the side that a kind of flow casting molding prepares absorbing material
Method.
Background technology
, because the electromagnetic energy of electromagnetic wave can receive much concern for heat energy, it can be effective for the preparation method of absorbing material
Prevent the interference to electronic equipment for the electromagenetic wave radiation, mitigate the injury to person health for the electromagnetic wave further.Currently, solvent-borne type
Method is to prepare the main path inhaling wave plate material.This method be by thermoelasticity macromolecule matrix for example ethylene propylene diene rubber, nitrile rubber,
Neoprene, is dissolved in organic solvent such as toluene, Ketohexamethylene, chlorinated hydrocabon etc., in other species additives such as external reinforcement agent
Afterwards, curtain coating makes the preparation method of lamellar absorbing material.Due to, in solvent-borne type method, adding a large amount of organic solvents, working as baking
When scraping film, have solvent volatilization poisonous in a large number or that environment is harmful, lead to serious environmental pollution and to manufacturing-oriented work
Person health works the mischief；Meanwhile, a large amount of uses of organic solvent, cost also becomes very high.In addition, the preparation of solvent-borne type method
Suction wave plate, if no post processing, pcrmeability is in 20-30（1MHz）, low.
Content of the invention
For solving above technical problem, it is an object of the invention to provide a kind of flow casting molding of the present invention prepares absorbing material
Method, adopt water consumption substitution organic solvent, water-based latex class material substitutes thermoelasticity polymer rubber, and assists suitable dispersion
Agent, thickening agent, waveplate material is inhaled in preparation, has high magnetic permeability and good heat resistance, pollution-free, harmless.
The object of the invention is realized in：
A kind of method that flow casting molding prepares absorbing material, it is critical only that is made up of following steps：First by weight by 90 ~
110 parts of solvents, 80 ~ 90 parts of suction ripple powder, 8 ~ 12 parts of dispersants add ball mill ball millings, are subsequently adding 25 ~ 60 parts of binding agents and carry out
Secondary ball milling, adds thickening agent and adjusts viscosity in 4000 ~ 12000 mPa.s, finally scratch slurry, toast and wind
Warehouse-in.
Preferably, above-mentioned solvent is water.
Preferably, above-mentioned suction ripple powder inhales ripple powder for ferrum sial.
Preferably, above-mentioned dispersant is ammonium polyacrylate salt or polyacrylic acid sodium salt or high polymer class.The selection of dispersant
And consumption plays decisive role to the stability of slurry
Preferably, above-mentioned binding agent is styrene-butadiene latex or polyurethane dispersing liquid.Binding agent can crosslink in drying course
Thus improving the intensity of sheet material, the problems such as the selection of binding agent needs to consider it to the electrical property coupling of powder body, covering property,
Continuous and derivable can be prepared, resilient suction wave plate material.
Preferably, above-mentioned thickening agent is association type polyurethaness or polyacrylic or carboxymethyl cellulose or methylol fibre
Dimension element or ethers.
Preferably, ball milling speed when above-mentioned solvent, suction ripple powder, dispersant ball milling mixing is 1200 RPM, described bonding
Ball milling speed after agent adds is 600 RPM.
Beneficial effect：
The method that a kind of flow casting molding of the present invention prepares absorbing material, adopts water consumption substitution organic solvent, and water-based latex class material replaces
For thermoelasticity polymer rubber, and assist suitable dispersant, thickening agent, waveplate material is inhaled in preparation, has 50 ~ 60（1MHz）High
Pcrmeability and good heat resistance, the long-time keeper stability of energy at 120 DEG C, and also pollution-free, harmless.
Specific embodiment
With reference to embodiment, the invention will be further described.
Embodiment 1：
A kind of method that flow casting molding prepares absorbing material, is made up of following steps：First by weight by 100 parts of solvents, 85
Part inhales ripple powder, 10 parts of dispersants add ball mill ball millings, and ball milling speed is 1200 RPM, adds 25 parts of binding agents to enter after 2 hours
Row secondary ball milling, ball milling speed is 600 RPM, and after 30 minutes, filter ball defibrination material simultaneously adds 1.5 parts of thickening agents to adjust viscosity
Between 4000 ~ 12000 mPa.s, finally scratch slurry, toast and wind warehouse-in.Described dispersant is ammonium polyacrylate
Salt, described binding agent is styrene-butadiene latex, and described thickening agent is association type polyurethaness.
Testing result：Pcrmeability is 50（1 MHz）.
Embodiment 2：
A kind of method that flow casting molding prepares absorbing material, is made up of following steps：First by weight by 100 parts of solvents, 85
Part inhales ripple powder, 10 parts of dispersants add ball mill ball millings, and ball milling speed is 1200 RPM, adds 60 parts of binding agents to enter after 2 hours
Row secondary ball milling, ball milling speed is 600 RPM, and after 30 minutes, filter ball defibrination material simultaneously adds 3.5 thickening agents to adjust viscosity
Between 4000 ~ 12000 mPa.s, finally scratch slurry, toast and wind warehouse-in.Described dispersant is sodium polyacrylate
Salt, described binding agent is polyurethane dispersing liquid, and described thickening agent is polyacrylic.
Testing result：Pcrmeability is 55（1 MHz）.
Embodiment 3：
A kind of method that flow casting molding prepares absorbing material, is made up of following steps：First by weight by 90 parts of solvents, 80 parts
Inhale ripple powder, 8 parts of dispersants add ball mill ball milling, ball milling speed is 1200 RPM, adds 25 parts of binding agents to carry out two after 2 hours
Secondary ball milling, ball milling speed is 600 RPM, after 30 minutes, filter ball defibrination material and add thickening agent viscosity is adjusted 4000 ~
Between 12000 mPa.s, finally scratch slurry, toast and wind warehouse-in.Described dispersant is polyacrylic acid sodium salt, described
Binding agent is polyurethane dispersing liquid, and described thickening agent is polyacrylic.
Testing result：Pcrmeability is 54（1 MHz）.
Embodiment 4
A kind of method that flow casting molding prepares absorbing material, is made up of following steps：First by weight by 110 parts of solvents, 90
Part inhales ripple powder, 12 parts of dispersants add ball mill ball millings, and ball milling speed is 1200 RPM, adds 60 parts of binding agents to enter after 2 hours
Row secondary ball milling, ball milling speed is 600 RPM, and after 30 minutes, filter ball defibrination material simultaneously adds thickening agent to adjust viscosity
Between 4000 ~ 12000 mPa.s, finally scratch slurry, toast and wind warehouse-in.Described dispersant is sodium polyacrylate
Salt, described binding agent is polyurethane dispersing liquid, and described thickening agent is polyacrylic.
Testing result：Pcrmeability is 55（1 MHz）.
Embodiment 5：
A kind of method that flow casting molding prepares absorbing material, is made up of following steps：First by weight by 100 parts of solvents, 85
Part inhales ripple powder, 10 parts of dispersants add ball mill ball millings, and ball milling speed is 1200 RPM, adds 45 parts of binding agents to enter after 2 hours
Row secondary ball milling, ball milling speed is 600 RPM, and after 30 minutes, filter ball defibrination material simultaneously adds thickening agent to adjust viscosity
Between 4000 ~ 12000 mPa.s, finally scratch slurry, toast and wind warehouse-in.Described dispersant is sodium polyacrylate
Salt, described binding agent is polyurethane dispersing liquid, and described thickening agent is polyacrylic.
Testing result：Pcrmeability is 60（1 MHz）.
Finally it should be noted that foregoing description is only the preferred embodiments of the present invention, the ordinary skill people of this area
Member, under the enlightenment of the present invention, without prejudice on the premise of present inventive concept and claim, can make table as multiple types
Show, such conversion each falls within protection scope of the present invention.
Claims (7)
1. a kind of flow casting molding prepares the method for absorbing material it is characterised in that being made up of following steps：First by weight will
90 ~ 110 parts of solvents, 80 ~ 90 parts of suction ripple powder, 8 ~ 12 parts of dispersants add ball mill ball millings, are subsequently adding 25 ~ 60 parts of binding agents and enter
Row secondary ball milling, adds thickening agent and adjusts viscosity in 4000 ~ 12000 mPa.s, finally scratch slurry, toast and receive
It is involved in storehouse.
2. a kind of flow casting molding according to claim 1 prepare absorbing material method it is characterised in that：Described solvent is
Water.
3. the method that a kind of flow casting molding of the preparation method of absorbing material according to claim 1 or claim 2 prepares absorbing material,
It is characterized in that：Described suction ripple powder inhales ripple powder for ferrum sial.
4. a kind of flow casting molding according to claim 3 prepare absorbing material method it is characterised in that：Described dispersant
For ammonium polyacrylate salt or polyacrylic acid sodium salt or high polymer class.
5. the method that a kind of flow casting molding of the preparation method of absorbing material prepares absorbing material according to claim 3, its
It is characterised by：Described binding agent is styrene-butadiene latex or polyurethane dispersing liquid.
6. a kind of flow casting molding according to claim 3 prepare absorbing material method it is characterised in that：Described thickening agent
For association type polyurethaness or polyacrylic or carboxymethyl cellulose or hydroxymethyl cellulose or ethers.
7. the method that a kind of flow casting molding according to claim 1 or 2 or 4 or 5 or 6 prepares absorbing material, its feature exists
In：Ball milling speed when described solvent, suction ripple powder, dispersant ball milling mixing is 1200 RPM, the ball after described binding agent addition
Mill speed is 600 RPM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610598445.3A CN106433560A (en) | 2016-07-27 | 2016-07-27 | Method for preparing wave absorbing materials by tape casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610598445.3A CN106433560A (en) | 2016-07-27 | 2016-07-27 | Method for preparing wave absorbing materials by tape casting |
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| Publication Number | Publication Date |
|---|---|
| CN106433560A true CN106433560A (en) | 2017-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610598445.3A Pending CN106433560A (en) | 2016-07-27 | 2016-07-27 | Method for preparing wave absorbing materials by tape casting |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109627529A (en) * | 2018-11-21 | 2019-04-16 | 重庆市鸿富诚电子新材料有限公司 | A kind of absorbing material of tape casting, preparation method and its Preparation equipment |
| CN111057457A (en) * | 2019-12-31 | 2020-04-24 | 江门江益磁材有限公司 | Water-resistant and environment-friendly water-based wave absorbing plate and preparation method thereof |
| CN112662023A (en) * | 2020-12-11 | 2021-04-16 | 大连盈视微波吸收材料有限公司 | Wave-absorbing material and preparation method and application thereof |
| CN113438884A (en) * | 2021-06-23 | 2021-09-24 | 浙江原邦材料科技有限公司 | Water-based high-permeability wave-absorbing plate and preparation method thereof |
| CN114685972A (en) * | 2022-04-25 | 2022-07-01 | 深圳市汉华热管理科技有限公司 | Water-based polyurethane wave-absorbing material and preparation method thereof |
| CN115256747A (en) * | 2022-08-10 | 2022-11-01 | 深圳丰盈磁性材料有限公司 | Integrated flexible magnetic sealing body |
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| CN1450137A (en) * | 2003-04-29 | 2003-10-22 | 四川大学 | Aqueous emulsion type electromagnetic wave shielded coating and preparation process thereof |
| CN102623122A (en) * | 2012-04-01 | 2012-08-01 | 电子科技大学 | Method for preparing Fe-Si-Al soft magnetic material with high microwave permeability |
| CN104981138A (en) * | 2014-04-10 | 2015-10-14 | 苏州驭奇材料科技有限公司 | Electromagnetic shielding heat-dissipation film and manufacturing method thereof |
| CN105017948A (en) * | 2015-08-05 | 2015-11-04 | 普罗旺斯科技（深圳）有限公司 | Wave absorbing sheet and manufacturing method thereof |
| CN105733084A (en) * | 2016-02-23 | 2016-07-06 | 深圳鹏汇功能材料有限公司 | Wave-absorbing material, wave-absorbing coiled material capable of being coiled continuously and preparation method |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1450137A (en) * | 2003-04-29 | 2003-10-22 | 四川大学 | Aqueous emulsion type electromagnetic wave shielded coating and preparation process thereof |
| CN102623122A (en) * | 2012-04-01 | 2012-08-01 | 电子科技大学 | Method for preparing Fe-Si-Al soft magnetic material with high microwave permeability |
| CN104981138A (en) * | 2014-04-10 | 2015-10-14 | 苏州驭奇材料科技有限公司 | Electromagnetic shielding heat-dissipation film and manufacturing method thereof |
| CN105017948A (en) * | 2015-08-05 | 2015-11-04 | 普罗旺斯科技（深圳）有限公司 | Wave absorbing sheet and manufacturing method thereof |
| CN105733084A (en) * | 2016-02-23 | 2016-07-06 | 深圳鹏汇功能材料有限公司 | Wave-absorbing material, wave-absorbing coiled material capable of being coiled continuously and preparation method |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109627529A (en) * | 2018-11-21 | 2019-04-16 | 重庆市鸿富诚电子新材料有限公司 | A kind of absorbing material of tape casting, preparation method and its Preparation equipment |
| CN111057457A (en) * | 2019-12-31 | 2020-04-24 | 江门江益磁材有限公司 | Water-resistant and environment-friendly water-based wave absorbing plate and preparation method thereof |
| CN111057457B (en) * | 2019-12-31 | 2021-08-27 | 江门江益磁材有限公司 | Water-resistant and environment-friendly water-based wave absorbing plate and preparation method thereof |
| CN112662023A (en) * | 2020-12-11 | 2021-04-16 | 大连盈视微波吸收材料有限公司 | Wave-absorbing material and preparation method and application thereof |
| CN113438884A (en) * | 2021-06-23 | 2021-09-24 | 浙江原邦材料科技有限公司 | Water-based high-permeability wave-absorbing plate and preparation method thereof |
| CN114685972A (en) * | 2022-04-25 | 2022-07-01 | 深圳市汉华热管理科技有限公司 | Water-based polyurethane wave-absorbing material and preparation method thereof |
| CN115256747A (en) * | 2022-08-10 | 2022-11-01 | 深圳丰盈磁性材料有限公司 | Integrated flexible magnetic sealing body |
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Application publication date: 20170222 |
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