CN114672093A - Resin material with low density and high sound insulation, and preparation method and application thereof - Google Patents
Resin material with low density and high sound insulation, and preparation method and application thereof Download PDFInfo
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- CN114672093A CN114672093A CN202210327083.XA CN202210327083A CN114672093A CN 114672093 A CN114672093 A CN 114672093A CN 202210327083 A CN202210327083 A CN 202210327083A CN 114672093 A CN114672093 A CN 114672093A
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- 239000000463 material Substances 0.000 title claims abstract description 67
- 229920005989 resin Polymers 0.000 title claims abstract description 67
- 239000011347 resin Substances 0.000 title claims abstract description 67
- 238000009413 insulation Methods 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000011521 glass Substances 0.000 claims abstract description 44
- 239000011324 bead Substances 0.000 claims abstract description 28
- 239000000314 lubricant Substances 0.000 claims abstract description 20
- 239000000945 filler Substances 0.000 claims abstract description 16
- 239000004005 microsphere Substances 0.000 claims abstract description 16
- 229920006026 co-polymeric resin Polymers 0.000 claims abstract description 13
- 239000003607 modifier Substances 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims description 13
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 12
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 12
- 239000004743 Polypropylene Substances 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 10
- 229920001155 polypropylene Polymers 0.000 claims description 10
- 238000001125 extrusion Methods 0.000 claims description 8
- 229920001897 terpolymer Polymers 0.000 claims description 8
- 229920001577 copolymer Polymers 0.000 claims description 6
- 238000005469 granulation Methods 0.000 claims description 4
- 230000003179 granulation Effects 0.000 claims description 4
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 3
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 claims description 3
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000003674 animal food additive Substances 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 claims 1
- 238000013329 compounding Methods 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 11
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 description 3
- 239000007822 coupling agent Substances 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000010561 standard procedure Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- UQZIWOQVLUASCR-UHFFFAOYSA-N alumane;titanium Chemical compound [AlH3].[Ti] UQZIWOQVLUASCR-UHFFFAOYSA-N 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 150000004665 fatty acids Chemical group 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000004671 saturated fatty acids Chemical class 0.000 description 1
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 150000004670 unsaturated fatty acids Chemical class 0.000 description 1
- 235000021122 unsaturated fatty acids Nutrition 0.000 description 1
- 208000016261 weight loss Diseases 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0853—Vinylacetate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/08—Insulating elements, e.g. for sound insulation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a resin material with low density and high sound insulation, a preparation method and application thereof. The resin material comprises the following components in parts by weight: 40-60 parts of copolymer resin, 35-50 parts of inorganic nano filler, 5-20 parts of hollow glass microsphere, 1-5 parts of lubricant, 0.1-5 parts of compatilizer and 0.1-5 parts of surface modifier. By compounding the hollow glass beads and the inorganic nano filler, the sound insulation performance of the resin material is greatly improved under the condition of small addition amount, and the hollow structure of the hollow glass beads is not damaged under the protection of the lubricant, so that the resin material keeps low density.
Description
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a resin material with low density and high sound insulation, and a preparation method and application thereof.
Background
With the development of the automobile industry and the improvement of the use requirements of consumers, the silence degree in the automobile is more and more concerned by the consumers. The materials of the sound insulation pad and the sound insulation board used in the automobile can directly influence the noise level in the automobile, thereby influencing the use experience of drivers and passengers.
Generally, the prior art generally improves the sound-insulating properties of materials by adding sound-insulating fillers to the resin. For example, the prior art discloses a polypropylene sound insulation material which comprises components such as polypropylene, barium sulfate, glass fiber and the like, and the sound insulation property is increased by filling and modifying the components with the barium sulfate and the glass fiber. In order to obtain better sound insulation properties, the amount of sound insulating filler added needs to be increased, but at an excessively high loading, the density of the sound insulating material becomes excessively high, which is contrary to the development of weight reduction of automobiles. Therefore, the conventional soundproof resin material tends to be insufficient in soundproof performance, subject to the upper limit of the filling amount of the soundproof filler.
Therefore, it is required to develop a resin material having both low density and high sound insulation.
Disclosure of Invention
The invention aims to overcome the defects of high density and poor sound insulation performance in the prior art, and provides the resin material with low density and high sound insulation performance.
Another object of the present invention is to provide a method for producing the above resin material.
The invention also aims to provide application of the resin material.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a resin material with low density and high sound insulation comprises the following components in parts by weight:
40-60 parts of copolymer resin,
35-50 parts of an inorganic nano filler,
5-20 parts of hollow glass beads,
1-5 parts of a lubricant,
0.1 to 5 parts of a compatibilizer,
0.1-5 parts of a surface modifier.
The hollow glass beads are used as hollow materials, have low density, and can greatly improve the sound insulation performance of the resin material under a small filling amount after being compounded with the inorganic nano filler, thereby being beneficial to keeping the low density of the resin material. However, the hollow glass beads are easily broken in the mixing and extrusion process, so that the hollow structure is damaged, the sound insulation performance of the resin material cannot be improved, and the density of the material is increased.
The inventor researches and discovers that in the presence of a certain amount of lubricant, the glass microspheres are favorably dispersed in a resin system, the hollow structure of the hollow glass microspheres in the processing process is protected from being damaged, and the resin material is ensured to have high sound insulation performance and low density.
Preferably, the average particle size of the hollow glass beads is 20-60 μm.
More preferably, the average particle size of the hollow glass beads is 30 to 40 μm.
When the average particle size of the hollow glass beads is too large, the hollow glass beads are still easily damaged under the action of stress even in the presence of a lubricant, and the prepared resin material has high density and poor sound insulation performance. When the average particle diameter of the hollow glass microspheres is too small, the density of the resin material is not reduced remarkably.
Preferably, the lubricant is a fatty acid based lubricant.
Optionally, the lubricant is one or more of saturated fatty acid, unsaturated fatty acid and hydroxy fatty acid.
Preferably, the average particle size of the inorganic nano filler is 20-50 nm.
Preferably, the inorganic nanofiller is nano calcium carbonate and/or nano silica.
Preferably, the copolymer resin is one or more of ethylene-vinyl acetate copolymer (EVA), ethylene-octene copolymer, ethylene-butene copolymer or ethylene-propylene copolymer.
More preferably, the copolymer resin is EVA.
Preferably, the VA content (vinyl acetate content) in the EVA is 18-33 wt.%.
More preferably, the VA content in the EVA is 26-29 wt.%.
The content of VA in the EVA is detected according to the GB/T30925-2014 standard method.
When the EA content is within the range of 26-29%, the distance between EVA molecules is kept moderate, which is beneficial to the better sound insulation performance of the resin material; when the EA content is in the range, the resin material has better formability, is beneficial to uniformly dispersing the hollow glass beads and the nano inorganic filler, and further improves the sound insulation performance of the resin material.
Preferably, the compatilizer is one or more of methacrylic acid grafted polyethylene-polystyrene-polypropylene terpolymer, acrylic acid grafted polyethylene-polystyrene-polypropylene terpolymer or glycidyl methacrylate grafted polyethylene-polystyrene-polypropylene terpolymer.
Preferably, the surface modifier is one or more of an aminosilane coupling agent, an epoxy silane coupling agent, a titanate coupling agent or an aluminum-titanium composite coupling agent.
The invention also provides a preparation method of the resin material, which comprises the following steps:
mixing inorganic nano filler and a surface modifier to obtain a first mixture;
mixing the first mixture with the copolymer resin, the compatilizer and the lubricant, and adding the mixture to a main feeding port of an extruder; adding the hollow glass beads into the extruder from a rear-zone screw cylinder of the extruder;
and carrying out melt mixing and extrusion granulation to obtain the resin material.
In the preparation method, the hollow glass beads are added into the rear zone screw barrel of the extruder, so that the hollow structure damage caused by too long shearing force of the extruder due to too early addition of the hollow glass beads is avoided. However, in general, the addition of hollow glass microspheres in the back region results in non-uniform dispersion in the resin system. In the resin material, the lubricant is added, so that the risk of uneven dispersion of the hollow glass beads is avoided, the density of the resin material is further reduced, and the sound insulation performance is improved.
Preferably, the extruder is a double-screw extruder, and the length-diameter ratio of screws of the double-screw extruder is 36: 1-56: 1.
Preferably, the double-screw extruder comprises ten zones in total, and the rear zone screw barrel is from 6 th to 8 th.
Preferably, the melt extrusion temperature of the double-screw extruder is 80-110 ℃ in the first zone, 160-180 ℃ in the second zone, 180-190 ℃ in the third zone, 180-190 ℃ in the fourth zone, 180-190 ℃ in the fifth zone, 180-190 ℃ in the sixth zone, 180-190 ℃ in the seventh zone, 180-190 ℃ in the eighth zone, 180-190 ℃ in the ninth zone, and 180-190 ℃ in the tenth zone; the screw rotating speed of the double-screw extruder is 200-800 revolutions per minute.
The invention also protects the application of the resin material in preparing sound insulation pads and sound insulation boards.
Compared with the prior art, the invention has the beneficial effects that:
the present invention develops a resin material having low density and high sound insulation. The sound insulation performance of the resin material is greatly improved under the condition of small addition amount by compounding the hollow glass beads with the inorganic nano filler, and the hollow structure of the hollow glass beads is not damaged under the protection of the lubricant, so that the resin material keeps low density, and the density of the resin material is less than or equal to 1.22g/cm3。
Detailed Description
The present invention will be further described with reference to the following embodiments.
The raw materials in the examples and comparative examples are all commercially available;
reagents, methods and apparatus used in the present invention are conventional in the art unless otherwise indicated.
Examples 1 to 16
Examples 1 to 16 respectively provide a resin material, the component contents of which are shown in table 1, and the preparation method is as follows:
mixing inorganic nano filler and a surface modifier to obtain a first mixture;
mixing the first mixture with the copolymer resin, the compatilizer and the lubricant, and adding the mixture to a main feeding port of a double-screw extruder; adding the hollow glass beads into the double-screw extruder from a screw cylinder in the 7 th zone of the double-screw extruder;
carrying out melt mixing and extrusion granulation to obtain a resin material;
the double-screw extruder comprises ten zones, wherein the melt extrusion temperature is 80-110 ℃ in the first zone, 160-180 ℃ in the second zone, 180-190 ℃ in the third zone, 180-190 ℃ in the fourth zone, 180-190 ℃ in the fifth zone, 180-190 ℃ in the sixth zone, 180-190 ℃ in the seventh zone, 180-190 ℃ in the eighth zone, 180-190 ℃ in the ninth zone, and 180-190 ℃ in the tenth zone; the screw rotating speed of the double-screw extruder is 200-800 revolutions per minute.
TABLE 1 component contents (parts by weight) of the resin materials of examples 1 to 16
Examples 17 to 18
Examples 17 to 18 each provide a resin material having the same component contents as in example 1, and the difference between the preparation method and example 1 is:
in example 17, hollow glass microspheres were fed from zone 8 barrels of a twin screw extruder to the twin screw extruder;
in example 18, hollow glass microspheres were fed into a twin screw extruder from zone 5 barrels of the twin screw extruder.
Comparative examples 1 to 4
Comparative examples 1 to 4 respectively provide a resin material, the component contents of which are shown in table 2, and the preparation method is as follows:
mixing an inorganic nano filler and a surface modifier to obtain a first mixture;
mixing the first mixture with the copolymer resin, the compatilizer and the lubricant, and adding the mixture to a main feeding port of a double-screw extruder; adding the hollow glass beads into the double-screw extruder from a screw barrel in a zone 7 of the double-screw extruder;
carrying out melt mixing and extrusion granulation to obtain a resin material;
the double-screw extruder comprises ten zones, wherein the melt extrusion temperature is 80-110 ℃ in the first zone, 160-180 ℃ in the second zone, 180-190 ℃ in the third zone, 180-190 ℃ in the fourth zone, 180-190 ℃ in the fifth zone, 180-190 ℃ in the sixth zone, 180-190 ℃ in the seventh zone, 180-190 ℃ in the eighth zone, 180-190 ℃ in the ninth zone, and 180-190 ℃ in the tenth zone; the screw rotating speed of the double-screw extruder is 200-800 revolutions per minute.
TABLE 2 component contents (parts by weight) of the resin materials of comparative examples 1 to 4
| 1 | 2 | 3 | 4 | ||
| Copolymer resin | A1 | 50 | 50 | 50 | 50 |
| Inorganic nano filler | B1 | 40 | 40 | 50 | 40 |
| Hollow glass bead | C1 | 10 | - | - | 30 |
| Solid glass microspheres | / | 10 | |||
| Lubricant agent | D1 | - | 3 | 3 | 3 |
| Compatilizer | E1 | 3 | 3 | 3 | 3 |
| Surface modifier | F1 | 3 | 3 | 3 | 3 |
Performance testing
The resin materials prepared in the above examples and comparative examples were subjected to a performance test, specifically, the method was as follows:
sound insulation performance: sound transmission loss was tested in dB according to VS-01.05-T-08001-A1-2014; the sound frequency range is 400 Hz-6300 Hz, the sample thickness is selected as 2mm, the air temperature is 20.0 ℃, the relative humidity is 50.0%, and the atmospheric pressure is 101325.0 Pa;
density: testing according to the GB/T1033.1-2008 standard method.
The test results of the examples and comparative examples are shown in Table 3.
TABLE 3 test results of examples and comparative examples
According to the test results in Table 3, the resin materials prepared in the embodiments 1-12 of the invention all have excellent sound insulation performance; the density of the resin materials of the embodiment is lower and is less than or equal to 1.22g/cm3This means that the hollow structure of the hollow glass microspheres in the resin material prepared according to the technical scheme of the invention is not damaged.
In examples 1 to 4, the resin materials of examples 2 and 3 were better in sound insulation performance and lower in density. This is probably because the hollow glass beads, when having a large average particle diameter, are easily destroyed under the stress even in the presence of a lubricant, and the resulting resin material has a high density and poor sound insulation properties; when the average particle diameter of the hollow glass beads is smaller, the corresponding hollow proportion is lower, the density reduction of the resin material is not obvious, and the sound insulation performance is not obviously improved. Therefore, the average particle diameter of the hollow glass beads is preferably 30 to 40 μm.
According to the embodiments 1 and 6 to 8, the compatibilizer used in the embodiments 1, 6 and 7 is a polyethylene-polystyrene-polypropylene terpolymer grafted by acrylic acid, methacrylic acid or glycidyl methacrylate, and the compatibilizer used in the embodiment 8 is a maleic anhydride grafted polyethylene-polystyrene-polypropylene terpolymer. According to the test results, the density of the resin material of example 8 was relatively higher and the sound-insulating property was relatively poor.
According to examples 1 and 9 to 13, it can be seen that when the copolymer resin is EVA, the resin material has a better sound insulation performance, and the sound transmission loss is relatively more under each frequency condition. When the content of VA in EVA is 26-29 wt.%, the sound insulation performance of the resin material is relatively better.
In example 17, the hollow glass microspheres were fed from the zone 8 screw of the twin-screw extruder to the twin-screw extruder at a later position, and the dispersibility of the hollow glass microspheres was somewhat inferior to that of example 1 even in the presence of the lubricant, affecting the sound insulating properties of the material.
In example 18, hollow glass microspheres were fed into the twin-screw extruder from zone 5 screw of the twin-screw extruder, and the screw was positioned further forward, and the hollow glass microspheres were subjected to a shearing force in the screw for a longer time, so that the density of the resin material was slightly increased.
In comparative example 1, which contained no lubricant, it can be seen that the resin material had poor sound insulating properties, low sound transmission loss, and high density. This is because the hollow glass beads are poor in dispersibility in the resin matrix and the hollow structure is destroyed.
In comparative example 2, in which hollow glass beads were not contained but solid glass beads were used in their entirety, the resulting resin material was inferior in sound insulation property and too high in density. In comparative example 3, the hollow glass microspheres were not included, but were replaced with nano calcium carbonate. Although nano calcium carbonate is a filler conventionally used for sound insulation materials, its sound insulation effect is far inferior to that of hollow glass beads, and it cannot bring a density-reducing effect to resin materials.
In comparative example 4, the content of the hollow glass microspheres was too large to be dispersed uniformly and effectively even with the aid of the lubricant, resulting in poor sound-insulating properties of the resin material.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A resin material with low density and high sound insulation is characterized by comprising the following components in parts by weight:
40-60 parts of copolymer resin,
35-50 parts of inorganic nano-filler,
5-20 parts of hollow glass beads,
1-5 parts of a lubricant,
0.1 to 5 parts of a compatibilizer,
0.1-5 parts of a surface modifier.
2. The resin material according to claim 1, wherein the hollow glass microspheres have an average particle size of 20 to 60 μm.
3. The resin material according to claim 1, wherein the inorganic nanofiller has an average particle size of 20 to 50 nm.
4. The resin material as claimed in claim 1, wherein the compatibilizer is one or more of methacrylic acid grafted polyethylene-polystyrene-polypropylene terpolymer, acrylic acid grafted polyethylene-polystyrene-polypropylene terpolymer or glycidyl methacrylate grafted polyethylene-polystyrene-polypropylene terpolymer.
5. The resin material according to claim 1, wherein the copolymer resin is one or more of an ethylene-vinyl acetate copolymer, an ethylene-octene copolymer, an ethylene-butene copolymer, or an ethylene-propylene copolymer.
6. The resin material according to claim 5, wherein the copolymer resin is an ethylene-vinyl acetate copolymer.
7. The resin material according to claim 6, wherein the vinyl acetate content of the ethylene-vinyl acetate copolymer is 18 to 33 wt.%.
8. A method for producing a resin material as claimed in any one of claims 1 to 7, characterized by comprising the steps of:
mixing inorganic nano filler and a surface modifier to obtain a first mixture;
mixing the first mixture with the copolymer resin, the compatilizer and the lubricant, and adding the mixture to a main feeding port of an extruder; adding the hollow glass beads into the extruder from a rear-zone screw cylinder of the extruder;
and carrying out melt mixing and extrusion granulation to obtain the resin material.
9. The preparation method of the compound feed additive, wherein the extruder is a double-screw extruder, the length-diameter ratio of screws is 36: 1-56: 1; the double-screw extruder is ten zones in total, and the rear zone screw barrel is the 6 th to 8 th zones.
10. Use of the resin material according to any one of claims 1 to 7 for producing sound-insulating mats or sound-insulating boards.
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| CN202210327083.XA CN114672093A (en) | 2022-03-30 | 2022-03-30 | Resin material with low density and high sound insulation, and preparation method and application thereof |
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| CN202210327083.XA CN114672093A (en) | 2022-03-30 | 2022-03-30 | Resin material with low density and high sound insulation, and preparation method and application thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116904032A (en) * | 2023-07-13 | 2023-10-20 | 奥克兰高分子医用材料(天津)有限公司 | Filling material, preparation method and medical posture pad |
Citations (14)
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