CN105038125A - Damping modified resin and preparation method thereof - Google Patents
Damping modified resin and preparation method thereof Download PDFInfo
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- CN105038125A CN105038125A CN201510362988.0A CN201510362988A CN105038125A CN 105038125 A CN105038125 A CN 105038125A CN 201510362988 A CN201510362988 A CN 201510362988A CN 105038125 A CN105038125 A CN 105038125A
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- damping
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- damping modification
- epoxy resin
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Abstract
The invention discloses a damping modified resin and a preparation method thereof. The damping modified resin comprises the following components in parts by weight: 40 to 70 parts of epoxy resin, 20 to 30 parts of damping modifier, 15 to 20 parts of curing agent, and 0.2 to 1 part of accelerant. A beaker in which the epoxy resin and the damping modifier are mixed is placed into water bath; the temperature is set to be 100 DEG C, and simultaneously the mixture is stirred; the cutting agent DDS is added into the beaker after the viscosity of the resin is reduced and the mixture is mixed uniformly; after the DDS is stirred uniformly, the accelerant BF3.MEA is added and stirred; material mixing is completed after the mixture is stirred uniformly. According to the damping modified resin, the damping modifier and the epoxy resin are matched to obtain a mixed resin which is high in toughness and high in damping capacity; when the mixed resin is used for preparing a compound material, the mixed resin helps to improve the damping shock-absorbing effect of a compound material component.
Description
Technical field
What the present invention relates to is a kind of damping modification resin and preparation method thereof.Particularly, relate to one can directly be used for making vibration component, damping modification resin having damping capacity and mechanical property concurrently and preparation method thereof.
Background technology
Along with the develop rapidly of science and technology, mechanical means is tending towards at a high speed and automatization, and the vibration & noise problem thereupon caused is also more and more outstanding.In general, it is all harmful for vibrating system itself and environment, and it directly has influence on the serviceability of machine or structure, precision, efficiency, life-span, safety and stability, sometimes even can cause thrashing.Particularly at space industry, launch vehicle is being launched with the process run, strong vibration will be produced, these vibrations will pass to satellite component by support tube, detrimentally affect is produced to the performance of satellite, wherein support tube is the load bearing structure connecting launch vehicle and satellite, and many researchists wish the damping capacity by improving support tube, reduce the vibratory response of satellite.
Damping is the most important means solving vibration, noise problem.Usually the ability of system loss vibrational energy or acoustic energy is called damping, damping is larger, the energy of input system just can loss in the short period of time complete, thus system is shorter to static experienced time again from excited vibration, is excited to return to rapidly a kind of ability of front state of being excited afterwards so damping also can be understood as system.The method improving damping mainly contains three kinds, namely adopts system damping, structural damping and material damping.System damping refers to and arranges special damping shock absorber in systems in which, as anti-vibrating spring, impact damper etc.; Structural damping is additional materials or form additional structure on a certain vibrational structure of system, increases the damping capacity of system self, and these class methods comprise bonding surface damping, coulomb friction damped and compound damp structure etc.; Material damping is the object that the high damping characteristic relying on material itself to have reaches vibration and noise reducing.
Damping material obtains applying very widely in fields such as aerospace, engineering machinery, civil building, transport and communications.In aerospace field, damping material, for the manufacture of the controlling board of rocket, guided missile, jet plane, gyrostatic shell and equipment supporter etc., alleviates the interference of nuisance vibration to electronic system, improves the reliability of system and the accuracy of meter information; In field, naval vessel, damping material is for the manufacture of thruster, drive disk assembly and cabin dividing plate, significantly reduce and come from the vibration & noise that in mechanical component engagement process, surface collision produces, thus make naval vessel effectively avoid the remote probe of radar and sonar, fundamentally improve the stealthyization level on naval vessel.In addition, the occasion such as high-speed railway, urban light rail, buildings, bridge and dam also using damping material and damping device carries out vibration and noise reducing.
Retrieval prior art, an application number is 200910049413.8, name is called the patent documentation of " a kind of damping type epoxy resin material and preparation method thereof ", disclose damping type epoxy resin material prepared by a kind of interpolation Hinered phenols or hindered amines organic micromolecule compound in the epoxy, although the resin damping capacity that this invention obtains is fine, but its mechanical property is too poor, the load requirement of material cannot be met, therefore cannot be used for the preparation of structural part.
Summary of the invention
For the defect of prior art, the object of the invention is to overcome the shortcoming that damping material damping capacity and mechanical property cannot have concurrently, a kind of damping modification polymer matrix composites are provided.The present invention utilizes epicyanohydrin prepolymer modified epoxy, the matrix material damping capacity prepared with this modified resin is better, there is good mechanical property simultaneously, can directly be used for making vibration component, the good damping capacity of polymer matrix composites is not only from self damping capacity of Viscoelastic resin matrix and filamentary material, and the existence of interface and microdefect also substantially increases the damping capacity of matrix material.In addition, these damping modification polymer matrix composites have that high-strength light, erosion resistance are strong, easy construction and the advantage such as structure designability is strong, and this is that the application of polymer matrix composites and the optimization design of structural damping performance thereof provide wide space.
The present invention is achieved by the following technical solutions:
The invention provides a kind of damping modification resin, comprise following component and parts by weight:
Preferably, described damping modification resin, comprises following component and parts by weight:
Damping modification agent is under this ratio, and the resin damping loss factor of room temperature section improves maximum.
Preferably, described damping modification agent is epicyanohydrin prepolymer 861340.Epicyanohydrin prepolymer and epoxy resin have good compatibility, not only play toughness reinforcing effect, also accelerate the solidification of system simultaneously.Described epicyanohydrin prepolymer 861340 is produced by Jia Dida Chemical Co., Ltd. of Shenzhen.
Preferably, described epoxy resin is AG80, and solidifying agent is DDS, and promotor is BF
3mEA.
Present invention also offers a kind of preparation method of damping modification resin, comprise the following steps:
A, to get the raw materials ready according to component according to claim 1 and weight fraction;
B, the beaker being mixed with epoxy resin and damping modification agent is put into water-bath, bath temperature is 100 DEG C, stirs;
After c, epoxy resin and damping modification agent stir, add solidifying agent and stir, then add accelerant B F
3mEA stirs and obtains damping modification resin blend.
Preferably, stir speed (S.S.) described in step b is 800 ~ 1200rpm, and churning time is 10min.Resin viscosity is reduced greatly, obtains the epoxy resin and damping modification agent composition that stir.
Compared with prior art, the present invention has following beneficial effect:
1, better with the matrix material damping capacity that damping modification resin-made of the present invention is standby, there is good mechanical property simultaneously, can directly be used for making vibration component, the good damping capacity of polymer matrix composites is not only from self damping capacity of Viscoelastic resin matrix and filamentary material, and the existence of interface and microdefect also substantially increases the damping capacity of matrix material.
2, these damping modification polymer matrix composites have that high-strength light, erosion resistance are strong, easy construction and the advantage such as structure designability is strong, this is that the application of polymer matrix composites and the optimization design of structural damping performance thereof provide wide space.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, some distortion and improvement can also be made.These all belong to protection scope of the present invention.
embodiment 1
The present embodiment relates to a kind of damping modification resin and preparation thereof, and step is as follows:
A, prepare raw material according to following component and weight part content:
B, put epoxy resin and epicyanohydrin prepolymer into beaker by described formula rate, and put into water-bath, temperature is set as 100 DEG C, stirs simultaneously; Stir speed (S.S.) is 800 ~ 1200rpm, and churning time is 10min.
After c, epoxy resin and damping modification agent stir, add solidifying agent and stir; Add promotor stirring again, after stirring, namely complete damping modification resin blend.
embodiment 2
The present embodiment relates to a kind of damping modification resin and preparation thereof, and step is as follows:
A, prepare raw material according to following component and weight part content:
B, put epoxy resin and epicyanohydrin prepolymer into beaker by described formula rate, and put into water-bath, temperature is set as 100 DEG C, stirs simultaneously; Stir speed (S.S.) is 800 ~ 1200rpm, and churning time is 10min.
After c, epoxy resin and damping modification agent stir, add solidifying agent and stir; Add promotor stirring again, after stirring, namely complete damping modification resin blend.
The matrix material standby to the damping modification resin-made of embodiment 1 and 2 acquisition carries out performance test, and its result as shown in tables 1 to 5.
Table 1. matrix material is damping loss factor 30 DEG C time
| Damping modification polymer matrix composites | Unmodified resin based composites | |
| Unidirectional 0 ° of matrix material | 0.022 | 0.0157 |
| Unidirectional 45 ° of matrix materials | 0.068 | 0.0428 |
| Unidirectional 90 ° of matrix materials | 0.0603 | 0.0508 |
The unidirectional 0 ° of Tensile Properties of Composites test data of table 2.
| Performance perameter | Damping modification polymer matrix composites | Unmodified resin based composites |
| Modulus (GPa) | 111 | 146 |
| Poisson's ratio | 0.318 | 0.285 |
| Intensity (MPa) | 1517 | 2214 |
Table 3. longitudinal-transverse shear performance test data
| Performance perameter | Damping modification polymer matrix composites | Unmodified resin based composites |
| Longitudinal-transverse shear modulus (GPa) | 3.4 | 3.8 |
| Longitudinal-transverse shear intensity (MPa) | 94 | 73 |
The unidirectional 90 ° of tensile property test datas of table 4.
| Performance perameter | Damping modification polymer matrix composites | Unmodified resin based composites |
| Modulus (GPa) | 7.9 | 8.3 |
The unidirectional 0 ° of matrix material bending property test of table 5.
| Performance perameter | Damping modification polymer matrix composites | Unmodified resin based composites |
| Modulus in flexure (GPa) | 108 | 145 |
| Flexural strength (MPa) | 1045 | 1574 |
comparative example
This comparative example relates to a kind of damping modification resin and preparation thereof, and step is as follows:
A, prepare raw material according to following component and weight part content:
B, put epoxy resin and epicyanohydrin prepolymer into beaker by described formula rate, and put into water-bath, temperature is set as 100 DEG C, stirs simultaneously; Stir speed (S.S.) is 800 ~ 1200rpm, and churning time is 10min.
After c, epoxy resin and damping modification agent stir, add solidifying agent and stir; Add promotor stirring again, after stirring, namely complete damping modification resin blend.
Be 0.05 according to the modified resin pour mass damping loss factor of component preparation in this comparative example 30 DEG C time, and be 0.07 according to the modified resin pour mass damping loss factor of component preparation in embodiment 1 30 DEG C time.Modified resin pour mass damping loss factor prepared by embodiment 1 is obviously better than comparative example.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (6)
1. a damping modification resin, is characterized in that, comprises following component and parts by weight:
2. damping modification resin as claimed in claim 1, is characterized in that, comprise following component and parts by weight:
3. damping modification resin as claimed in claim 1 or 2, it is characterized in that, described damping modification agent is epicyanohydrin prepolymer 861340.
4. damping modification resin as claimed in claim 1 or 2, it is characterized in that, described epoxy resin is AG80, and solidifying agent is DDS, and promotor is BF
3mEA.
5. a preparation method for damping modification resin as claimed in claim 1, is characterized in that, comprise the following steps:
A, to get the raw materials ready according to component according to claim 1 and weight fraction;
B, the beaker being mixed with epoxy resin and damping modification agent is put into water-bath, bath temperature is 100 DEG C, stirs;
After c, epoxy resin and damping modification agent stir, add solidifying agent and stir, then add accelerant B F
3mEA stirs and obtains damping modification resin blend.
6. the preparation method of damping modification resin as claimed in claim 5, it is characterized in that, stir speed (S.S.) described in step b is 800 ~ 1200rpm, and churning time is 10min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510362988.0A CN105038125A (en) | 2015-06-26 | 2015-06-26 | Damping modified resin and preparation method thereof |
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| CN201510362988.0A CN105038125A (en) | 2015-06-26 | 2015-06-26 | Damping modified resin and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4903119A (en) * | 1986-05-01 | 1990-02-20 | Nitto Electric Industrial Co., Ltd. | Semi-conductor device |
| US20070095475A1 (en) * | 2005-11-01 | 2007-05-03 | L&L Products, Inc. | Adhesive material and method of using same |
| CN1958707A (en) * | 2006-11-13 | 2007-05-09 | 武汉理工大学 | Damp embedding glue of epoxy resin |
-
2015
- 2015-06-26 CN CN201510362988.0A patent/CN105038125A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4903119A (en) * | 1986-05-01 | 1990-02-20 | Nitto Electric Industrial Co., Ltd. | Semi-conductor device |
| US20070095475A1 (en) * | 2005-11-01 | 2007-05-03 | L&L Products, Inc. | Adhesive material and method of using same |
| CN1958707A (en) * | 2006-11-13 | 2007-05-09 | 武汉理工大学 | Damp embedding glue of epoxy resin |
Non-Patent Citations (1)
| Title |
|---|
| 吴鑫锐 等: "高阻尼复合材料支撑筒结构设计与材料工艺", 《宇航材料工艺》 * |
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Application publication date: 20151111 |