CN113754345A - High-damping resin-based mineral composite material and preparation method and application thereof - Google Patents
High-damping resin-based mineral composite material and preparation method and application thereof Download PDFInfo
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- CN113754345A CN113754345A CN202111104930.8A CN202111104930A CN113754345A CN 113754345 A CN113754345 A CN 113754345A CN 202111104930 A CN202111104930 A CN 202111104930A CN 113754345 A CN113754345 A CN 113754345A
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- composite material
- based mineral
- mineral composite
- damping resin
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/14—Polyepoxides
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
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- Engineering & Computer Science (AREA)
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- Materials Engineering (AREA)
- Structural Engineering (AREA)
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Abstract
The invention provides a high-damping resin-based mineral composite material, and a preparation method and application thereof, and belongs to the technical field of composite materials. The high-damping resin-based mineral composite material comprises the following preparation raw materials in percentage by mass: 85-90% of aggregate, 8-13% of adhesive, 0.5-1.5% of rubber particles and 0.1-0.5% of coupling agent. According to the invention, a certain amount of rubber particles are added into the composite material, and the rubber particles can form a sea-island structure in the composite material, so that vibration energy can be effectively blocked and absorbed, and the damping effect is obvious. In addition, the sea-island structure does not obviously influence the mechanical properties of the composite material, and the composite material is ensured to have good physical properties.
Description
Technical Field
The invention relates to the technical field of composite materials, in particular to a high-damping resin-based mineral composite material and a preparation method and application thereof.
Background
The general machine tool mostly adopts metal materials as a basic machine body or a base. Because of the inherent characteristic of small damping of metal materials, the vibration generated in the high-speed movement process of the machine tool cannot be reduced in time, the whole machine tool vibrates, the machining precision of products is poor, the performance of the machine tool is greatly reduced, and the development of the industrial technology of the machine tool is seriously hindered.
Disclosure of Invention
The composite material has high damping and excellent mechanical property, can meet the requirements of dynamic and static properties of a machine tool and various physical indexes, and can be used as a base material for mechanical components instead of a cast iron material.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a high-damping resin-based mineral composite material which comprises the following preparation raw materials in percentage by mass: 85-90% of aggregate, 8-13% of adhesive, 0.5-1.5% of rubber particles and 0.1-0.5% of coupling agent.
Preferably, the aggregate is granite or marble.
Preferably, the aggregate has a particle size of 15mm or less.
Preferably, the grading of the aggregate is shown in table 1;
grading of the aggregates described in Table 1
| Particle size | -1mm | +1～-1.5mm | +1.5～-4mm | +4～-10mm | +10～-15mm |
| Mass percent | 13～15％ | 14～15％ | 14～18％ | 13～16％ | 36～46％ |
。
Preferably, the adhesive is formed by mixing a synthetic resin, a curing agent and a diluent.
Preferably, the synthetic resin includes an epoxy resin; the curing agent comprises polyetheramine D230; the diluent comprises 501 diluent.
Preferably, the content of the epoxy resin in the adhesive is 65-75%, the content of the diluent is 5-10%, and the content of the curing agent is 20-25% by mass of the adhesive.
Preferably, the rubber particles are nitrile rubber particles; the particle size of the rubber particles is 4-5 mm.
The invention provides a preparation method of the high-damping resin-based mineral composite material, which comprises the following steps:
mixing the preparation raw materials to obtain a mixed material;
and fixing the forming die on a vibrating table, injecting the mixed material into the forming die, vibrating, performing first maintenance on the die filled with the mixed material, opening the die after forming, and performing second maintenance on the obtained intermediate material to obtain the high-damping resin-based mineral composite material.
The invention provides an application of the high-damping resin-based mineral composite material or the high-damping resin-based mineral composite material prepared by the preparation method in the scheme in a mechanical component.
The invention provides a high-damping resin-based mineral composite material which comprises the following preparation raw materials in percentage by mass: 85-90% of aggregate, 8-13% of adhesive, 0.5-1.5% of rubber particles and 0.1-0.5% of coupling agent.
According to the invention, a certain amount of rubber particles are added into the composite material, and the rubber particles can form a sea-island structure in the composite material, so that vibration energy can be effectively blocked and absorbed, and the damping effect is obvious. In addition, the sea-island structure does not have adverse effect on the mechanical properties of the composite material, and the composite material is ensured to have good physical properties.
Detailed Description
The invention provides a high-damping resin-based mineral composite material which comprises the following preparation raw materials in percentage by mass: 85-90% of aggregate, 8-13% of adhesive, 0.5-1.5% of rubber particles and 0.1-0.5% of coupling agent.
The preparation raw materials of the high-damping resin-based mineral composite material comprise, by mass, 85-90% of aggregate, preferably 86-89%, and more preferably 87-88%. In the present invention, the aggregate is preferably granite or marble; the particle size of the aggregate is preferably 15mm or less, and more preferably the gradation shown in table 1:
grading of the aggregates described in Table 1
In Table 1, the-1 mm means a particle size of less than 1mm, and the +1 to-1.5 mm means a particle size of not less than 1mm and less than 1.5 mm; and so on.
The high-damping resin-based mineral composite material obtained by adopting the graded aggregate has the best physical property.
The preparation raw materials of the high-damping resin-based mineral composite material comprise, by mass, 8-13% of an adhesive, preferably 9-12%, and more preferably 10-11%. In the present invention, the binder is preferably formed by mixing a synthetic resin, a curing agent and a diluent; the synthetic resin preferably comprises an epoxy resin; the curing agent preferably comprises polyetheramine D230; the diluent preferably comprises a 501 diluent. The content of the epoxy resin in the adhesive is preferably 65-75% by mass, and more preferably 68-82% by mass; the content of the diluent is preferably 5-10%, and more preferably 6-8%; the content of the curing agent is preferably 20 to 25%, more preferably 22 to 24%.
The preparation raw materials of the high-damping resin-based mineral composite material comprise, by mass, 0.5-1.5% of rubber particles, preferably 0.8-1.3%, and more preferably 0.9-1.1%. In the invention, the particle size of the rubber particles is preferably 4-5 mm; the rubber particles are preferably nitrile rubber particles.
The preparation raw material of the high-damping resin-based mineral composite material comprises, by mass, 0.1-0.5% of a coupling agent, preferably 0.2-0.4%, and more preferably 0.25-0.35%. In the present invention, the coupling agent preferably comprises KH 550. The invention utilizes the coupling agent to increase the binding power between the rubber particles and the aggregate.
According to the invention, a certain amount of rubber particles are added into the composite material, and the rubber particles can form a sea-island structure in the composite material, so that vibration energy can be effectively blocked and absorbed, and the damping effect is obvious. In addition, the sea-island structure does not obviously influence the mechanical properties of the composite material, and the composite material is ensured to have good physical properties.
The invention provides a preparation method of the high-damping resin-based mineral composite material, which comprises the following steps:
mixing the preparation raw materials to obtain a mixed material;
and fixing the forming die on a vibrating table, injecting the mixed material into the forming die, vibrating, performing first maintenance on the die filled with the mixed material, opening the die after forming, and performing second maintenance on the obtained intermediate material to obtain the high-damping resin-based mineral composite material.
According to the invention, the preparation raw materials are mixed to obtain a mixed material.
In the present invention, the mixing of the respective preparation raw materials preferably includes: and sequentially adding a coupling agent, rubber particles and aggregate into the adhesive, and mixing. Before mixing, the rubber particles are preferably dried by hot air at 50 ℃ for 6-8 h to constant weight.
After the mixed material is obtained, the forming die is fixed on a vibrating table, the mixed material is injected into the forming die for vibration, then the die filled with the mixed material is subjected to first maintenance, the die is opened after forming, and the obtained intermediate material is subjected to second maintenance to obtain the high-damping resin-based mineral composite material.
In the invention, the frequency of the vibration is preferably 110-120 Hz, the amplitude of the vibration is preferably 0.2-0.5 mm, and the vibration time is preferably 10-15 min. The invention uses vibration to compact the material and eliminate air bubbles.
In the present invention, the temperature of the first oxygen blanket is normal temperature, and the time of the first curing is preferably 24 to 48 hours. In the present invention, the temperature of the second curing is preferably normal temperature, and the time is preferably 3 to 5 days.
The invention provides an application of the high-damping resin-based mineral composite material or the high-damping resin-based mineral composite material prepared by the preparation method in the scheme in a mechanical component. The high-damping resin-based mineral composite material is preferably used as a base material of a mechanical component instead of a cast iron material.
The resin-based mineral composite material with high damping property, the preparation method and the application thereof provided by the present invention will be described in detail with reference to the following examples, but they should not be construed as limiting the scope of the present invention.
Example 1
Physically crushing granite leftover materials, screening, and classifying into 5 grades according to particle diameters, wherein the specific grades are shown in a table 2; cleaning and drying all aggregates, weighing according to the formula requirement and uniformly mixing; all raw materials were weighed as in table 3;
weighing epoxy resin, curing agent polyetheramine D230 and 501 diluent according to the formula, and uniformly stirring to obtain an adhesive; adding KH550, dried nitrile rubber particles and aggregate into the adhesive in sequence, and uniformly stirring to obtain a mixed material;
fixing a forming die on a vibrating table, injecting the mixed material into the forming die, and vibrating at high frequency, wherein the vibration frequency is 110HZ, the vibration amplitude is 0.4mm, and the vibration time is 10 min;
curing the mould at normal temperature for 48h, opening the mould after forming, and continuing curing at normal temperature for 3 days after opening the mould to obtain the high-damping resin-based mineral composite material.
Grading of granite as described in Table 2
| Particle size | -1mm | +1～-1.5mm | +1.5～-4mm | +4～-10mm | +10～-15mm |
| Mass percent | 13％ | 14％ | 16％ | 16％ | 41％ |
Table 3 composition of the raw materials of example 1
Example 2
The difference from example 1 is that the raw material composition is shown in Table 4.
Table 4 raw material composition of example 2
| Raw materials | Aggregate material | Resin composition | Curing agent | Diluent | KH550 | Rubber particles |
| Weight (D) | 1000 | 65 | 25 | 10 | 2.2 | 9 |
Example 3
The difference from example 1 is only that granite is replaced with marble, and the rest is the same as example 1.
Comparative example 1
The difference from example 1 is that no rubber particles were added.
And (3) performance testing:
1. the damping performance of the composite materials of examples 1-3 and comparative example 1 was tested with reference to the damping performance test method of GB/T18258-2000 damping material, and the results are shown in Table 5.
TABLE 5 damping Properties of examples and comparative examples
| Example 1 | Example 2 | Example 3 | Comparative example 1 | |
| Damping performance | 0.467 | 0.442 | 0.475 | 0.213 |
2. The composites of examples and comparative examples were subjected to physical property tests with reference to "GB/T32667-2016 Artificial granite for machine", and the results are shown in Table 6.
TABLE 6 physical Properties of examples and comparative examples
| Example 1 | Example 2 | Example 3 | Comparative example 1 | |
| Compression Property/MPa | 120.5 | 92.2 | 118.4 | 128.7 |
| Flexural Property/MPa | 32.7 | 27.4 | 33.5 | 34.7 |
The embodiment and the comparative example show that the resin-based mineral composite material with high damping property and the preparation method thereof are provided by the invention, and the composite material has high damping property and excellent mechanical property, can meet the requirements of dynamic and static properties and various physical indexes of a machine tool, and can be used as a base material for replacing a cast iron material to be applied to mechanical components.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The high-damping resin-based mineral composite material is characterized by comprising the following preparation raw materials in percentage by mass: 85-90% of aggregate, 8-13% of adhesive, 0.5-1.5% of rubber particles and 0.1-0.5% of coupling agent.
2. The high damping resin-based mineral composite according to claim 1, wherein the aggregate is granite or marble.
3. The high-damping resin-based mineral composite according to claim 1 or 2, wherein the aggregate has a particle size of 15mm or less.
4. The high damping resin-based mineral composite according to claim 3, wherein the grading of the aggregate is as shown in Table 1;
grading of the aggregates described in Table 1
。
5. The high damping resin-based mineral composite according to claim 1, wherein the binder is formed by mixing a synthetic resin, a curing agent and a diluent.
6. The high damping resin-based mineral composite according to claim 5, wherein the synthetic resin comprises an epoxy resin; the curing agent comprises polyetheramine D230; the diluent comprises 501 diluent.
7. The high-damping resin-based mineral composite material as claimed in claim 5 or 6, wherein the adhesive contains 65-75% of epoxy resin, 5-10% of diluent and 20-25% of curing agent by mass.
8. The high damping resin-based mineral composite according to claim 1, wherein the rubber particles are nitrile rubber particles; the particle size of the rubber particles is 4-5 mm.
9. The preparation method of the high damping resin-based mineral composite material as claimed in any one of claims 1 to 8, comprising the steps of:
mixing the preparation raw materials to obtain a mixed material;
and fixing the forming die on a vibrating table, injecting the mixed material into the forming die, vibrating, performing first maintenance on the die filled with the mixed material, opening the die after forming, and performing second maintenance on the obtained intermediate material to obtain the high-damping resin-based mineral composite material.
10. Use of the high-damping resin-based mineral composite material according to any one of claims 1 to 8 or the high-damping resin-based mineral composite material prepared by the preparation method according to claim 9 in mechanical components.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111104930.8A CN113754345A (en) | 2021-09-22 | 2021-09-22 | High-damping resin-based mineral composite material and preparation method and application thereof |
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| CN202111104930.8A CN113754345A (en) | 2021-09-22 | 2021-09-22 | High-damping resin-based mineral composite material and preparation method and application thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101531821A (en) * | 2009-04-17 | 2009-09-16 | 山东大学 | Glass fiber reinforced polyester mineral composite material and preparation method thereof |
| CN101786356A (en) * | 2010-01-25 | 2010-07-28 | 张博明 | Preparation method of a co-cured high damping composite material |
| CN103320073A (en) * | 2013-06-26 | 2013-09-25 | 株洲世林聚合物有限公司 | Pouring type epoxy resin-based high-damping encapsulation material |
| CN104845045A (en) * | 2015-04-30 | 2015-08-19 | 中国船舶重工集团公司第七二五研究所 | Room-temperature curable epoxy resin based high damping material and preparation method thereof |
| CN105255159A (en) * | 2015-11-20 | 2016-01-20 | 中国铁道科学研究院铁道建筑研究所 | Cured track bed sinking repairing high-viscosity vibration attenuation polyurethane repairing material |
-
2021
- 2021-09-22 CN CN202111104930.8A patent/CN113754345A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101531821A (en) * | 2009-04-17 | 2009-09-16 | 山东大学 | Glass fiber reinforced polyester mineral composite material and preparation method thereof |
| CN101786356A (en) * | 2010-01-25 | 2010-07-28 | 张博明 | Preparation method of a co-cured high damping composite material |
| CN103320073A (en) * | 2013-06-26 | 2013-09-25 | 株洲世林聚合物有限公司 | Pouring type epoxy resin-based high-damping encapsulation material |
| CN104845045A (en) * | 2015-04-30 | 2015-08-19 | 中国船舶重工集团公司第七二五研究所 | Room-temperature curable epoxy resin based high damping material and preparation method thereof |
| CN105255159A (en) * | 2015-11-20 | 2016-01-20 | 中国铁道科学研究院铁道建筑研究所 | Cured track bed sinking repairing high-viscosity vibration attenuation polyurethane repairing material |
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