CN102977480B - Method for preparing rubber base material flexible absorbing material - Google Patents
Method for preparing rubber base material flexible absorbing material Download PDFInfo
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- CN102977480B CN102977480B CN201210524026.7A CN201210524026A CN102977480B CN 102977480 B CN102977480 B CN 102977480B CN 201210524026 A CN201210524026 A CN 201210524026A CN 102977480 B CN102977480 B CN 102977480B
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Abstract
The invention discloses a method for preparing a rubber base material flexible absorbing material and relates to the field of civil absorbing materials. The method comprises the following steps of: A, filling a filler and rubber according to a mass ratio of 90:10-91:9, adding an organic solvent which accounts for 1.2-2 percent of total mass of the filler and the rubber and is soluble with the rubber in the mixing process, mixing, and uniformly mixing the filler and the rubber powder; and B, standing a period of time after the mixing is finished, volatilizing the organic solvent, and calendering to prepare an absorbing patch. According to the method, the filling concentration can be obviously improved, and the filling concentration is more than 90 percent, so that the material performance is improved; and complex chemical process control or professional auxiliary equipment is not required, and the method is convenient to operate and low in cost.
Description
Technical field
The present invention relates to civilian absorbing material field, particularly relate to the preparation method of the flexible absorbing material of a kind of rubber substrate.
Background technology
The flexible absorbing material of rubber substrate belongs to the category of matrix material, because the material of moulding possesses the flexible speciality of rubber, is different from the material that in absorbing material, other rigidity maybe can not bend, so be called the flexible absorbing material of rubber substrate.The forming method of the flexible absorbing material of rubber substrate is: by metal powder granulates insert in rubber substrate mixing evenly, then calendering is prepared into and inhales ripple paster.
Fill concentration very important on the impact of absorbing property, in general, filling concentration is higher, and the absorbing material wave-sucking performance of same thickness is stronger, and low-frequency effect is better.For example, the rubber substrate flexible materials that filling concentration is 80% is in the time of 1mm thickness, can reach-5dB of absorbing material absorption peak, fill after concentration to 90% and promote, can reach-8dB of absorbing material absorption peak, and absorption peak moves to low frequency, so one of important technical that lifting filling concentration is the flexible absorbing material of rubber substrate to be prepared.
But be subject to the restriction of material behavior, for any powdery absorbent and rubber substrate, all have top filling in the mixing operation stage, and filler particles be larger, fill the more difficult raising of concentration; Rubber coated is poorer, fills the more difficult raising of concentration.For example: in compounding rubber operation, the metal-powder that is 30um-100um by size distribution and rubber in mass ratio 87:13 are filled, mixing evenly after mixture can be in blocks, adding metal-powder as continued cannot moulding, fills the highest of concentration and reaches 87%.If adopt metal-powder and the rubber filling of small particle size 10um-10um, can reach and fill concentration more than 90, but using value is filled lower than the metal-powder of large particle diameter.
Along with the research to the flexible absorbing material technology of preparing of rubber substrate, fill upper limit of concentration in raising and obtained some achievements in recent years, for example, rubber substrate is carried out to modification, the covering property of Reinforced Rubber base material; Or powder is carried out to surface treatment, improve the bonding properties of metal-powder and organic rubber etc., these methods can promote filling concentration, but need more complicated processing method and more professional equipment, and cost is higher.
Summary of the invention
The object of the invention is the deficiency in order to overcome above-mentioned background technology, the preparation method of the flexible absorbing material of a kind of rubber substrate is provided, can obviously promote filling concentration, realize filling concentration and be greater than 90%, and then the performance of lifting material, and do not need complicated chemical process control or professional utility appliance, operation is convenient, and cost is lower.
The preparation method of the flexible absorbing material of rubber substrate provided by the invention, comprise the following steps: A, filler and rubber are filled by the mass ratio of 90:10 ~ 91:9, in batch mixing process, add account for filler and rubber total mass 1.2%-2% with organic solvent rubber compatibility, carry out mixingly, filler is mixed with rubber powder; After B, mixing completing, place for some time, vapor away organic solvent, then roll, be prepared into and inhale ripple paster.
In technique scheme, in steps A, filler and rubber are filled by the mass ratio of 90:10.
In technique scheme, in steps A, filler and rubber are filled by the mass ratio of 90.5:9.5.
In technique scheme, in steps A, filler and rubber are filled by the mass ratio of 91:9.
In technique scheme, in the batch mixing process of steps A, add and account for filler and rubber total mass 1.2% and organic solvent rubber compatibility.
In technique scheme, in the batch mixing process of steps A, add and account for filler and rubber total mass 1.5% and organic solvent rubber compatibility.
In technique scheme, in the batch mixing process of steps A, add and account for filler and rubber total mass 2% and organic solvent rubber compatibility.
In technique scheme, in steps A, adopt mill to carry out mixing, fall the mode of glue filler is mixed with rubber powder by turning over roller.
In technique scheme, in steps A, adopt Banbury mixer to carry out mixing, by the mode stirring, filler is mixed with rubber powder.
In technique scheme, in step B after mixing completing, at normal temperatures or heat but temperature not higher than the burning-point of organic solvent, place for some time, vapor away organic solvent.
Compared with prior art, advantage of the present invention is as follows:
(1) the present invention utilizes the similar principle that mixes of rubber and organic solvent, in mixing process, add appropriate solvent, make rubber in dissolving state or swollen state by appropriate solvent, rubber molecular chain more easily moves, dispersiveness and the homogeneity of rubber are increased, in mixing process, rubber " is eaten powder " faster, can reduce by approximately 20% packing number of times, powder filled efficiency is higher, can realize the raising of filling concentration (mass ratio) 4%, thereby can be coated more filler in mixing process, obviously promote and fill concentration, realize filling concentration and be greater than 90%, and then the absorptive character of lifting absorbing material, absorption peak is moved to low frequency, peak also obviously improves by force.
(2) the present invention does not need complicated chemical process control or professional utility appliance, only needs the necessaries of the compounding rubber such as mill or Banbury mixer, and operation is convenient, and cost is lower.
(3) every rubber that dissolves in solvent all can adopt the present invention to prepare, and without specific formula, for example natural rubber is dissolved in gasoline, and nitrile rubber is dissolved in dibutylester, applies wider.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail.
The embodiment of the present invention provides the preparation method of the flexible absorbing material of a kind of rubber substrate, comprises the following steps:
A, filler and rubber are filled by the mass ratio of 90:10 ~ 91:9, in batch mixing process, add account for filler and rubber total mass 1.2%-2% with organic solvent rubber compatibility, carry out mixingly, filler is mixed with rubber powder;
After B, mixing completing at normal temperatures or heat but temperature not higher than the burning-point of organic solvent, place for some time, vapor away organic solvent, then roll, be prepared into and inhale ripple paster.
In actual applications, can adopt mill to carry out mixing, fall the mode of glue filler is mixed with rubber powder by turning over roller, also can adopt Banbury mixer to carry out mixing, by the mode stirring, filler be mixed with rubber powder.
Turning over roller, to fall glue be rubber molding process current techique, and detailed process is:
Rubber is put between mill two rollers, after rubber bag roller, on the spacer gel of cylinder top, added filler, utilize Zou's contracting of spacer gel to carry secretly and enter between roller, and produce mixing effect radially, make filler insert rubber unvulcanizate.
The concrete proportioning of filler and rubber is adjusted according to actual environment and manipulation require appropriateness, judging criterion be rubber in dissolving " the mud shape " of state or swollen state, solvent load excessively can cause " mud shape " rubber too rare cannot carry out mixing.
Filler can be macrobead metal-powder, the metal-powder that for example size distribution is 30um-100um, and the organic solvent that rubber can mix for general chlorinated polyethylene rubber, with general chlorinated polyethylene rubber can be toluene.
Taking filler as size distribution as the metal-powder of 30um-100um, rubber are as general chlorinated polyethylene rubber, solvent are as toluene is example, be elaborated by 3 embodiment below.
Embodiment 1,
The metal-powder that is 30um-100um by size distribution and chlorinated polyethylene rubber in mass ratio 90:10 are filled, in batch mixing process, add the toluene that accounts for metal-powder and chlorinated polyethylene rubber total mass 1.2%, adopt mill to carry out mixing, fall the mode of glue filler is mixed with rubber powder by turning over roller; After mixing completing, place for some time at normal temperatures, vapor away toluene, then roll, be prepared into and inhale ripple paster.In the present embodiment mixing evenly after mixture can be in blocks, if but continue to add ferrite powder cannot moulding, fill concentration and reach 90%.
Embodiment 2
The metal-powder that is 30um-100um by size distribution and chlorinated polyethylene rubber are filled by the mass ratio of 90.5:9.5, in batch mixing process, add the toluene that accounts for metal-powder and chlorinated polyethylene rubber total mass 1.5%, adopt Banbury mixer to carry out mixing, by the mode stirring, filler is mixed with rubber powder; After mixing completing, heat, but and temperature not higher than the burning-point of organic solvent, place for some time, vapor away toluene, then roll, be prepared into and inhale ripple paster.In the present embodiment mixing evenly after mixture can be in blocks, if but continue to add ferrite powder cannot moulding, fill concentration and reach 90.5%.
Embodiment 3
The metal-powder that is 30um-100um by size distribution and chlorinated polyethylene rubber are filled by the mass ratio of 91:9, in batch mixing process, add the toluene that accounts for metal-powder and chlorinated polyethylene rubber total mass 2%, adopt mill to carry out mixing, fall the mode of glue filler is mixed with rubber powder by turning over roller; After mixing completing, place for some time at normal temperatures, vapor away toluene, then roll, be prepared into and inhale ripple paster.In the present embodiment mixing evenly after mixture can be in blocks, if but continue to add ferrite powder cannot moulding, fill concentration and reach 91%.
The effect comparison ginseng of above-mentioned 3 embodiment is shown in Table 1.
Table 1, effect comparison table
It should be noted that: the absorption agent that is improved fill the way of concentration and all can affect the mechanical mechanics property of the flexible absorbing material of rubber substrate, too high filling concentration can cause the tensile strength of material after moulding to reduce, so the filling concentration of the flexible absorbing material of rubber substrate need to be prepared according to the actual requirements, only in order to improve absorbing property, excess lift is filled concentration, can cause the mechanical mechanics property of final material to decline.
Those skilled in the art can carry out various modifications and variations to the embodiment of the present invention, if these amendments and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, these amendments and modification are also within protection scope of the present invention.
The prior art that the content of not describing in detail in specification sheets is known to the skilled person.
Claims (7)
1. a preparation method for the flexible absorbing material of rubber substrate, is characterized in that, comprises the following steps:
A, filler and rubber are filled by the mass ratio of 90.5:9.5～91:9, filler is that particle diameter is the metal-powder of 30 μ m-100 μ m, in batch mixing process, add account for filler and rubber total mass 1.2%-2% with organic solvent rubber compatibility, adopt mill or Banbury mixer to carry out mixing, filler is mixed with rubber powder: adopt mill to carry out when mixing, fall the mode of glue filler is mixed with rubber powder by turning over roller; Adopt Banbury mixer to carry out when mixing, by the mode stirring, filler is mixed with rubber powder;
After B, mixing completing, place for some time, vapor away organic solvent, then roll, be prepared into and inhale ripple paster.
2. the preparation method of the flexible absorbing material of rubber substrate as claimed in claim 1, is characterized in that: in steps A, filler and rubber are filled by the mass ratio of 90.5:9.5.
3. the preparation method of the flexible absorbing material of rubber substrate as claimed in claim 1, is characterized in that: in steps A, filler and rubber are filled by the mass ratio of 91:9.
4. the preparation method of the flexible absorbing material of rubber substrate as claimed in claim 1, is characterized in that: in the batch mixing process of steps A, add and account for filler and rubber total mass 1.2% and organic solvent rubber compatibility.
5. the preparation method of the flexible absorbing material of rubber substrate as claimed in claim 1, is characterized in that: in the batch mixing process of steps A, add and account for filler and rubber total mass 1.5% and organic solvent rubber compatibility.
6. the preparation method of the flexible absorbing material of rubber substrate as claimed in claim 1, is characterized in that: in the batch mixing process of steps A, add and account for filler and rubber total mass 2% and organic solvent rubber compatibility.
7. the preparation method of the flexible absorbing material of the rubber substrate as described in any one in claim 1 to 6, it is characterized in that: in step B after mixing completing, at normal temperatures or heat but temperature not higher than the burning-point of organic solvent, place for some time, vapor away organic solvent.
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| CN201210524026.7A CN102977480B (en) | 2012-12-07 | 2012-12-07 | Method for preparing rubber base material flexible absorbing material |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104774472A (en) * | 2015-04-10 | 2015-07-15 | 大连东信微波技术有限公司 | Ultra-wideband terahertz wave-absorbing material |
| CN105199169B (en) * | 2015-11-02 | 2018-01-26 | 浙江欧仁新材料有限公司 | A kind of absorbing material and preparation method thereof |
| CN106633424A (en) * | 2016-10-28 | 2017-05-10 | 青岛卓英社科技股份有限公司 | Preparation method of flame-retardant wave-absorbing material |
| CN107057148A (en) * | 2017-01-24 | 2017-08-18 | 北京理工大学珠海学院 | A kind of preparation method of absorbing material |
| CN109651799A (en) * | 2018-12-19 | 2019-04-19 | 航天科工武汉磁电有限责任公司 | Wave absorbing patch, preparation method and its application |
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| CN1683454A (en) * | 2004-04-18 | 2005-10-19 | 俞一哲 | Electromagnetic wave absorptive specific composite material |
| CN101491929A (en) * | 2009-03-10 | 2009-07-29 | 南昌大学 | Preparation method of aluminum fiber wave-absorbing composite material |
| CN102690468A (en) * | 2012-05-23 | 2012-09-26 | 航天科工武汉磁电有限责任公司 | Thin radio noise suppression material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2001044687A (en) * | 1999-07-29 | 2001-02-16 | Nitto Denko Corp | Wave absorber and its manufacture |
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|---|---|---|---|---|
| CN1683454A (en) * | 2004-04-18 | 2005-10-19 | 俞一哲 | Electromagnetic wave absorptive specific composite material |
| CN101491929A (en) * | 2009-03-10 | 2009-07-29 | 南昌大学 | Preparation method of aluminum fiber wave-absorbing composite material |
| CN102690468A (en) * | 2012-05-23 | 2012-09-26 | 航天科工武汉磁电有限责任公司 | Thin radio noise suppression material and preparation method thereof |
Non-Patent Citations (3)
| Title |
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| JP特开2001-44687A 2001.02.16 |
| 冯永宝等.羰基铁/三元乙丙橡胶复合材料的吸波性能.《材料科学与工艺》.2008,第16卷(第4期),589-592. |
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