CN113652076B - Dustproof sound insulation plate with buffering function and preparation method thereof - Google Patents
Dustproof sound insulation plate with buffering function and preparation method thereof Download PDFInfo
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- CN113652076B CN113652076B CN202110576640.7A CN202110576640A CN113652076B CN 113652076 B CN113652076 B CN 113652076B CN 202110576640 A CN202110576640 A CN 202110576640A CN 113652076 B CN113652076 B CN 113652076B
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- 230000003139 buffering effect Effects 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims abstract description 29
- 238000009413 insulation Methods 0.000 title claims abstract description 20
- 238000002156 mixing Methods 0.000 claims abstract description 84
- 239000004088 foaming agent Substances 0.000 claims abstract description 66
- 229920001971 elastomer Polymers 0.000 claims abstract description 54
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000003756 stirring Methods 0.000 claims abstract description 40
- 239000001254 oxidized starch Substances 0.000 claims abstract description 34
- 235000013808 oxidized starch Nutrition 0.000 claims abstract description 34
- 150000001448 anilines Chemical class 0.000 claims abstract description 32
- 239000004433 Thermoplastic polyurethane Substances 0.000 claims abstract description 27
- 239000000806 elastomer Substances 0.000 claims abstract description 27
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims abstract description 27
- YPLPZEKZDGQOOQ-UHFFFAOYSA-M iron oxychloride Chemical compound [O][Fe]Cl YPLPZEKZDGQOOQ-UHFFFAOYSA-M 0.000 claims abstract description 26
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 18
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 16
- IMQLKJBTEOYOSI-GPIVLXJGSA-N Inositol-hexakisphosphate Chemical compound OP(O)(=O)O[C@H]1[C@H](OP(O)(O)=O)[C@@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@@H]1OP(O)(O)=O IMQLKJBTEOYOSI-GPIVLXJGSA-N 0.000 claims abstract description 13
- IMQLKJBTEOYOSI-UHFFFAOYSA-N Phytic acid Natural products OP(O)(=O)OC1C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C1OP(O)(O)=O IMQLKJBTEOYOSI-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229940068041 phytic acid Drugs 0.000 claims abstract description 13
- 235000002949 phytic acid Nutrition 0.000 claims abstract description 13
- 239000000467 phytic acid Substances 0.000 claims abstract description 13
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 9
- 230000032683 aging Effects 0.000 claims abstract description 9
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims abstract description 9
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims abstract description 9
- 235000011130 ammonium sulphate Nutrition 0.000 claims abstract description 9
- -1 diamino-p-phenylenediamine sulfate Chemical compound 0.000 claims abstract description 9
- 239000011780 sodium chloride Substances 0.000 claims abstract description 9
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910001425 magnesium ion Inorganic materials 0.000 claims abstract description 8
- 238000000748 compression moulding Methods 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 59
- RCJVRSBWZCNNQT-UHFFFAOYSA-N dichloridooxygen Chemical compound ClOCl RCJVRSBWZCNNQT-UHFFFAOYSA-N 0.000 claims description 52
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 40
- 238000001914 filtration Methods 0.000 claims description 34
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 238000010438 heat treatment Methods 0.000 claims description 19
- 238000001035 drying Methods 0.000 claims description 18
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 13
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- JQWHASGSAFIOCM-UHFFFAOYSA-M sodium periodate Chemical compound [Na+].[O-]I(=O)(=O)=O JQWHASGSAFIOCM-UHFFFAOYSA-M 0.000 claims description 12
- 239000000725 suspension Substances 0.000 claims description 12
- 240000003183 Manihot esculenta Species 0.000 claims description 10
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 claims description 10
- 229920002472 Starch Polymers 0.000 claims description 10
- 239000008107 starch Substances 0.000 claims description 10
- 235000019698 starch Nutrition 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 239000012065 filter cake Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 7
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 6
- NQXWGWZJXJUMQB-UHFFFAOYSA-K iron trichloride hexahydrate Chemical compound O.O.O.O.O.O.[Cl-].Cl[Fe+]Cl NQXWGWZJXJUMQB-UHFFFAOYSA-K 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 4
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 4
- 239000008367 deionised water Substances 0.000 claims description 4
- 229910021641 deionized water Inorganic materials 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 230000007935 neutral effect Effects 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 2
- 239000011261 inert gas Substances 0.000 claims description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical class Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 239000003960 organic solvent Substances 0.000 claims description 2
- 230000001590 oxidative effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 3
- 238000004108 freeze drying Methods 0.000 claims 1
- 239000000047 product Substances 0.000 description 20
- 239000004814 polyurethane Substances 0.000 description 10
- 229920002635 polyurethane Polymers 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 6
- 239000000017 hydrogel Substances 0.000 description 6
- 239000002131 composite material Substances 0.000 description 4
- 238000005457 optimization Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 125000003277 amino group Chemical group 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000001291 vacuum drying Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0095—Mixtures of at least two compounding ingredients belonging to different one-dot groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0066—Use of inorganic compounding ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/009—Use of pretreated compounding ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2403/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2403/04—Starch derivatives
- C08J2403/10—Oxidised starch
-
- 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
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
- C08K2003/3063—Magnesium sulfate
-
- 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
- C08K3/16—Halogen-containing compounds
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
Abstract
The invention discloses a dustproof sound-insulation board with a buffering function and a preparation method thereof, and relates to the technical field of new materials. Firstly, preparing modified aniline from aniline, diamino-p-phenylenediamine sulfate and sodium chloride under the action of ammonium persulfate, then mixing the modified aniline with iron oxychloride to prepare pre-modified iron oxychloride, then mixing the pre-modified iron oxychloride with oxidized starch, adding a magnesium ion solution, stirring and mixing, then adding ammonium sulfate and phytic acid, stirring and reacting, continuously introducing ammonia gas, reacting and ageing to prepare a modified foaming agent, finally, mixing the modified foaming agent with molten thermoplastic polyurethane elastomer rubber, and performing compression molding to prepare the dustproof and sound insulation board with the buffer function. The dustproof and soundproof plate with the buffering function has excellent buffering performance and soundproof performance and good dustproof performance.
Description
Technical Field
The invention relates to the technical field of new materials, in particular to a dustproof sound-proof board with a buffering function and a preparation method thereof.
Background
The polyurethane sandwich board is a polyurethane heat insulation sandwich board for buildings, and is also called an anti-leakage sandwich roof board, a polyurethane hard foam heat insulation board, a polyurethane composite board, a PU board and the like. The composite board is a composite board with double metal surfaces, single metal surfaces and non-metal surfaces, which takes polyurethane rigid foam as a heat-insulating layer, is usually used for wall surfaces and roof enclosure systems of industrial plants, logistics storage and integrated houses, and the composite board with the heat-conducting coefficient and the polyurethane sandwich board has small heat-conducting coefficient and good heat-insulating property, thereby being the best heat-insulating material at present.
However, the sound insulation effect of the existing polyurethane board still needs to be improved, and the polyurethane board is prone to cracking when being impacted, and the dust resistance is not good, so the polyurethane sound insulation board still needs to be researched.
Disclosure of Invention
The invention aims to provide a dustproof sound-insulation board with a buffering function and a preparation method thereof, and aims to solve the problems in the prior art.
The dustproof sound-insulation board with the buffering function is characterized by mainly comprising the following raw material components in parts by weight: 80-100 parts of thermoplastic polyurethane elastomer rubber and 8-18 parts of modified foaming agent;
the modified foaming agent is prepared from raw materials including ferric oxychloride, modified aniline, oxidized starch, a magnesium ion solution and phytic acid.
Preferably, the modified aniline is prepared from diamino-p-phenylenediamine sulfate, aniline, sodium chloride and ammonium persulfate as raw materials.
Preferably, the oxidized starch is prepared by oxidizing tapioca starch with sodium periodate.
As optimization, the magnesium ion solution is a magnesium sulfate solution with the mass fraction of 10%; the thermoplastic polyurethane elastomer rubber is the thermoplastic polyurethane elastomer rubber of which the Bayer material science and technology group model is 5377A.
As optimization, the dustproof sound-proof board with the buffering function mainly comprises the following raw material components in parts by weight: 100. the material comprises 15 parts of thermoplastic polyurethane elastomer rubber and 15 parts of modified foaming agent.
As optimization, the preparation method of the dustproof and soundproof plate with the buffering function mainly comprises the following preparation steps:
(1) Mixing aniline, diamino p-phenylenediamine sulfate and sodium chloride in hydrochloric acid, adding ammonium persulfate, stirring for reaction, filtering, washing and drying to obtain modified aniline;
(2) Mixing ferric oxychloride with an organic solvent, adding the modified aniline obtained in the step (1), performing ultrasonic dispersion, stirring and mixing, filtering, and drying to obtain pre-modified ferric oxychloride;
(3) Mixing oxidized starch with water to obtain an oxidized starch suspension, mixing the oxidized starch suspension with the pre-modified ferric oxychloride obtained in the step (2), adjusting the pH value to acidity, performing ultrasonic dispersion reaction in an inert gas atmosphere, filtering, and drying to obtain a foaming agent blank;
(4) Mixing the foaming agent blank obtained in the step (3) with a magnesium ion solution, stirring and mixing, adjusting the pH value to acidity, adding ammonium sulfate and phytic acid, performing ultrasonic reaction, adding ammonia gas, continuing stirring and reacting, aging, and filtering to obtain a modified foaming agent;
(5) And (3) heating and melting the thermoplastic polyurethane elastomer rubber, adding the modified foaming agent obtained in the step (4), stirring and mixing to obtain a mixture, adding the mixture into a mold, and performing compression molding to obtain the dustproof and soundproof plate with the buffering function.
As optimization, the preparation method of the dustproof and soundproof plate with the buffering function mainly comprises the following preparation steps:
(1) Aniline, diamino p-phenylenediamine sulfate and sodium chloride are mixed according to a mass ratio of 4:1:0.5 to 4.2:1:0.5 is mixed in hydrochloric acid with the concentration of 1mol/L and the mass of which is 40 to 50 times of that of aniline, ammonium persulfate with the mass of 0.8 to 0.9 time of that of the aniline is added at the speed of 1 to 5mL/min, the mixture is stirred and reacted for 1 hour at the temperature of between 8 ℃ below zero and 3 ℃ below zero, and then the mixture is filtered to obtain modified aniline blank, the modified aniline blank is washed for 2 to 3 times by hydrochloric acid with the concentration of 1mol/L, then washed for 3 to 5 times by ammonia water with the concentration of 1mol/L, washed by deionized water until the washing liquid is neutral, and freeze-dried to obtain modified aniline;
(2) Mixing ferric oxychloride and ethanol according to a mass ratio of 1:20 to 1:40, mixing the modified aniline obtained in the step (1) with the mass of 0.1-0.3 times of the ferric oxychloride in a beaker, performing ultrasonic dispersion for 60-120 min under the condition of the frequency of 45-60 kHz, stirring and mixing for 20-60 min under the condition of the rotating speed of 600-800 r/min, filtering to obtain a pre-modified ferric oxychloride blank, and drying the pre-modified ferric oxychloride blank for 1-2 h at the temperature of 85 ℃ to obtain the pre-modified ferric oxychloride;
(3) Mixing oxidized starch and water according to a mass ratio of 1:10 to 1:15, stirring and mixing for 20-80 min under the conditions that the temperature is 45-60 ℃ and the rotating speed is 600-700 r/min to obtain oxidized starch suspension, and mixing the oxidized starch suspension with the pre-modified ferric chloride oxide obtained in the step (2) according to the mass ratio of 10:1 to 10:3, mixing the mixture in a three-mouth flask, adjusting the pH value of materials in the three-mouth flask to 5-5.8 by using hydrochloric acid with the concentration of 0.5mol/L, introducing nitrogen into the three-mouth flask at the speed of 50-80 mL/min, reacting for 5-6 hours at the temperature of 55-65 ℃, filtering to obtain a filter cake, and drying the filter cake to constant weight at the temperature of 80 ℃ to obtain a foaming agent blank;
(4) Mixing the foaming agent blank obtained in the step (3) with a magnesium sulfate solution with the mass fraction of 10% according to the mass ratio of 1:20 to 1:30, mixing the mixture in a flask, stirring and mixing the mixture for 2 to 3 hours at room temperature, adjusting the pH of the materials in the pH flask to 4 to 6 by using hydrochloric acid with the concentration of 1mol/L, adding ammonium sulfate with the mass of 0.1 to 0.2 times of that of foaming agent blanks and phytic acid with the mass of 0.2 to 0.6 times of that of the foaming agent blanks into the flask, reacting the mixture for 3 to 5 hours at the temperature of between 60 and 85 ℃ and the ultrasonic frequency of between 55 and 65kHz, introducing ammonia gas into the flask at the speed of between 50 and 70mL/min, continuously stirring and reacting the mixture for 50 to 60 minutes at the temperature of between 100 ℃ and the rotating speed of between 300 and 500r/min, aging the mixture for 10 hours at room temperature, and filtering the mixture to modify the foaming agent;
(5) And (3) heating the thermoplastic polyurethane elastomer rubber to be molten, adding the modified foaming agent obtained in the step (4) with the mass of 0.15 time of that of the thermoplastic polyurethane elastomer rubber, stirring and mixing for 3-5 min under the conditions that the temperature is 170-180 ℃ and the rotating speed is 300-500 r/min to obtain a mixture, adding the mixture into a die, pressing for 10min under the conditions that the temperature is 170 ℃ and the pressure is 5MPa, and forming to obtain the dustproof sound insulation board with the buffer function.
Optimally, the preparation method of the iron oxychloride in the step (2) comprises the steps of adding ferric trichloride hexahydrate into a muffle furnace, heating to 240 ℃ at the heating rate of 1 ℃/min, keeping the temperature at the temperature for 60min, discharging to obtain an iron oxychloride blank, and mixing the iron oxychloride blank and water according to the mass ratio of 1:100, ultrasonic stripping for 60-180 min under the condition of 50-60 kHz frequency, and filtering to obtain the ferric oxychloride.
Optimally, the preparation method of the oxidized starch in the step (3) comprises the following steps of mixing the cassava starch and water according to a mass ratio of 1:30 to 1:50, adding sodium periodate solution with the mass fraction of 12 percent, the mass fraction of which is 3 to 6 times that of the cassava starch, adjusting the pH value to 5, reacting for 5 hours in a dark place at the temperature of between 25 and 35 ℃, filtering, and drying in vacuum to obtain the oxidized starch.
Compared with the prior art, the invention has the beneficial effects that:
the invention uses the modified foaming agent when preparing the dustproof and soundproof board with the buffer function.
The modified foaming agent used in the invention is prepared by taking oxidized starch, ferric oxychloride, phytic acid and modified aniline as main raw materials; firstly, the ferric oxychloride is of a lamellar structure, and after the ferric oxychloride is added into a product, the stress area can be increased when the product is subjected to concentrated impact force, so that the product is prevented from cracking, and the buffering performance of the product is improved; secondly, the modified aniline contains amino groups at the head and the tail of a molecular chain, and after the modified aniline enters a lamellar structure of the oxy-ferric chloride through intercalation under the action of the amino groups, a hydrogel structure can be formed inside the lamellar structure of the oxy-ferric chloride under the action of phytic acid, and the hydrogel has certain elasticity under the condition of absorbing moisture, so that the buffering performance of the product can be further improved after the modified foaming agent is added into the product; moreover, due to the formation of hydrogel among the ferric oxychloride, the conductivity among the ferric oxychloride layers can be improved, so that the modified foaming agent has good conductivity, the overall conductivity of the product can be improved after the modified foaming agent is added into the product, the phenomenon that the product adsorbs a large amount of dust due to electrostatic action is reduced, and the dustproof performance of the product is indirectly improved; meanwhile, because the lamellar structure of the ferric oxychloride contains hydrogel with water, after the ferric oxychloride is added into a product, the ferric oxychloride can play a foaming effect in the product along with the evaporation of water, and simultaneously promote the modified foaming agent to disperse in the product, so that the dust resistance and the sound insulation performance of the product are further improved;
in the modified foaming agent added in the invention, due to the addition of oxidized starch, magnesium ions in magnesium sulfate can be adsorbed in a lamellar structure of the ferric oxychloride under the action of static electricity, basic magnesium sulfate whisker filling is formed in the lamellar structure of the ferric oxychloride in subsequent treatment, and the lamellar structure of the ferric oxychloride can be prevented from collapsing in the product forming process under the action of vapor pressure formed by evaporation of water in the basic magnesium sulfate whisker and hydrogel, so that the buffering and sound insulation performance of the product after pressing is ensured.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to more clearly illustrate the method of the present invention, the following examples are given, and the method of testing each index of the dustproof and soundproof plate having the buffering function manufactured in the following examples is as follows:
the buffering performance is as follows: the damping coefficients of the dustproof and soundproof sheet having the damping function obtained in each example and the comparative example were measured for 5 times, and the minimum value was obtained.
Sound insulation performance: the sound absorption coefficients of the dustproof and soundproof plate with the buffering function obtained in each example and the comparative product under the condition of the sound frequency of 2kHz were measured for 5 times, and the average value was obtained.
Example 1
A dustproof acoustic celotex board with buffer function, by weight, mainly includes: 100 parts of thermoplastic polyurethane elastomer rubber and 15 parts of modified foaming agent.
A preparation method of a dustproof sound insulation board with a buffering function mainly comprises the following preparation steps:
(1) Aniline, diamino p-phenylenediamine sulfate and sodium chloride are mixed according to a mass ratio of 4:1:0.5 is mixed in hydrochloric acid with the concentration of 1mol/L and the mass of which is 50 times that of aniline, ammonium persulfate with the mass of 0.8 time that of the aniline is added at the speed of 3mL/min, the mixture is stirred and reacted for 1h at the temperature of minus 5 ℃, and then the mixture is filtered to obtain a modified aniline blank, the modified aniline blank is washed for 3 times by hydrochloric acid with the concentration of 1mol/L, then washed for 4 times by ammonia water with the concentration of 1mol/L, washed by deionized water until the washing liquid is neutral, and freeze-dried to obtain the modified aniline;
(2) Mixing ferric oxychloride and ethanol according to a mass ratio of 1:30, mixing the aniline and the modified aniline in the step (1), wherein the mass of the aniline is 0.2 times that of the ferric oxychloride, adding the modified aniline in the step (1) into a beaker, performing ultrasonic dispersion for 60min under the condition of 50kHz, stirring and mixing for 40min under the condition of 700r/min, filtering to obtain a pre-modified ferric oxychloride blank, and drying the pre-modified ferric oxychloride blank for 1h at the temperature of 85 ℃ to obtain pre-modified ferric oxychloride;
(3) Mixing oxidized starch and water according to a mass ratio of 1:12, stirring and mixing for 60min at the temperature of 50 ℃ and the rotating speed of 650r/min to obtain oxidized starch suspension, and mixing the oxidized starch suspension with the pre-modified ferric oxychloride obtained in the step (2) according to the mass ratio of 10:1, mixing the mixture in a three-neck flask, adjusting the pH value of the material in the three-neck flask to 5 by using hydrochloric acid with the concentration of 0.5mol/L, introducing nitrogen into the three-neck flask at the speed of 60mL/min, reacting for 6 hours at the temperature of 60 ℃, filtering to obtain a filter cake, and drying the filter cake to constant weight at the temperature of 80 ℃ to obtain a foaming agent blank;
(4) Mixing the foaming agent blank obtained in the step (3) with a magnesium sulfate solution with the mass fraction of 10% according to the mass ratio of 1:25, mixing the mixture in a flask, stirring and mixing the mixture for 2 hours at room temperature, adjusting the pH of the materials in the pH flask to 4.5 by using hydrochloric acid with the concentration of 1mol/L, adding ammonium sulfate with the mass of 0.1 time of that of foaming agent blanks and phytic acid with the mass of 0.4 time of that of the foaming agent blanks into the flask, reacting the mixture for 4 hours at the temperature of 70 ℃ and the ultrasonic frequency of 60kHz, introducing ammonia gas into the flask at the speed of 60mL/min, continuously stirring and reacting the mixture for 55 minutes at the temperature of 100 ℃ and the rotating speed of 400r/min, aging the mixture for 10 hours at room temperature, and filtering and modifying the foaming agent;
(5) And (3) heating the thermoplastic polyurethane elastomer rubber to be molten, adding the modified foaming agent obtained in the step (4) with the mass of 0.15 time of that of the thermoplastic polyurethane elastomer rubber, stirring and mixing for 4min at the temperature of 170 ℃ and the rotating speed of 400r/min to obtain a mixture, adding the mixture into a mold, pressing for 10min at the temperature of 170 ℃ and the pressure of 5MPa, and forming to obtain the dustproof and soundproof plate with the buffering function.
Optimally, the preparation method of the iron oxychloride in the step (2) comprises the steps of adding ferric trichloride hexahydrate into a muffle furnace, heating to 240 ℃ at a heating rate of 1 ℃/min, keeping the temperature at the temperature for 60min, discharging to obtain an iron oxychloride blank, and mixing the iron oxychloride blank and water according to a mass ratio of 1:100, ultrasonically stripping for 80min under the condition that the frequency is 60kHz, and filtering to obtain the ferric oxychloride.
Optimally, the preparation method of the oxidized starch in the step (3) comprises the following steps of mixing the cassava starch and water according to a mass ratio of 1:30, adding a sodium periodate solution with the mass fraction of 12 percent and the mass ratio of 4 times that of the cassava starch, adjusting the pH value to 5, carrying out light-shielding reaction for 5 hours at the temperature of 30 ℃, filtering, and carrying out vacuum drying to obtain the oxidized starch.
Example 2
A dustproof acoustic celotex board with buffer function, by weight, mainly includes: 100 parts of thermoplastic polyurethane elastomer rubber and 15 parts of modified foaming agent.
A preparation method of a dustproof sound insulation board with a buffering function mainly comprises the following preparation steps:
(1) Mixing ferric oxychloride and ethanol according to a mass ratio of 1:30, adding aniline with the mass 0.2 times that of the ferric oxychloride into the beaker, ultrasonically dispersing for 60min under the condition of 50kHz, stirring and mixing for 40min under the condition of 700r/min, filtering to obtain a pre-modified ferric oxychloride blank, and drying the pre-modified ferric oxychloride blank for 1h at the temperature of 85 ℃ to obtain the pre-modified ferric oxychloride;
(2) Mixing oxidized starch and water according to a mass ratio of 1:12, stirring and mixing for 60min at the temperature of 50 ℃ and the rotating speed of 650r/min to obtain oxidized starch suspension, and mixing the oxidized starch suspension with the pre-modified ferric oxychloride obtained in the step (1) according to the mass ratio of 10:1, mixing the mixture in a three-neck flask, adjusting the pH value of the material in the three-neck flask to 5 by using hydrochloric acid with the concentration of 0.5mol/L, introducing nitrogen into the three-neck flask at the speed of 60mL/min, reacting for 6 hours at the temperature of 60 ℃, filtering to obtain a filter cake, and drying the filter cake to constant weight at the temperature of 80 ℃ to obtain a foaming agent blank;
(3) Mixing the foaming agent blank obtained in the step (2) with a magnesium sulfate solution with the mass fraction of 10% according to the mass ratio of 1:25, mixing the mixture in a flask, stirring and mixing the mixture for 2 hours at room temperature, adjusting the pH of materials in the pH flask to 4.5 by using hydrochloric acid with the concentration of 1mol/L, adding ammonium sulfate with the mass of 0.1 time of that of a foaming agent blank and phytic acid with the mass of 0.4 time of that of the foaming agent blank into the flask, reacting the mixture for 4 hours at the temperature of 70 ℃ and the ultrasonic frequency of 60kHz, introducing ammonia gas into the flask at the speed of 60mL/min, continuously stirring and reacting the mixture for 55 minutes at the temperature of 100 ℃ and the rotating speed of 400r/min, aging the mixture for 10 hours at room temperature, and filtering and modifying the foaming agent;
(4) And (3) heating the thermoplastic polyurethane elastomer rubber to be molten, adding the modified foaming agent obtained in the step (3) with the mass of 0.15 time of that of the thermoplastic polyurethane elastomer rubber, stirring and mixing for 4min at the temperature of 170 ℃ and the rotating speed of 400r/min to obtain a mixture, adding the mixture into a mold, pressing for 10min at the temperature of 170 ℃ and the pressure of 5MPa, and forming to obtain the dustproof and soundproof plate with the buffering function.
Optimally, the preparation method of the iron oxychloride in the step (1) comprises the steps of adding ferric trichloride hexahydrate into a muffle furnace, heating to 240 ℃ at the heating rate of 1 ℃/min, keeping the temperature at the temperature for 60min, discharging to obtain an iron oxychloride blank, and mixing the iron oxychloride blank and water according to the mass ratio of 1:100, ultrasonically stripping for 80min under the condition that the frequency is 60kHz, and filtering to obtain the ferric oxychloride.
Optimally, the preparation method of the oxidized starch in the step (2) comprises the following steps of mixing the cassava starch and water according to a mass ratio of 1:30, adding a sodium periodate solution with the mass fraction of 12 percent and the mass ratio of 4 times that of the cassava starch, adjusting the pH value to 5, carrying out light-shielding reaction for 5 hours at the temperature of 30 ℃, filtering, and carrying out vacuum drying to obtain the oxidized starch.
Example 3
The utility model provides a dustproof acoustic celotex board with buffer function, counts according to parts by weight, mainly includes: 100 parts of thermoplastic polyurethane elastomer rubber and 15 parts of modified foaming agent.
A preparation method of a dustproof and soundproof board with a buffering function mainly comprises the following preparation steps:
(1) Aniline, diamino p-phenylenediamine sulfate and sodium chloride are mixed according to a mass ratio of 4:1:0.5 is mixed in hydrochloric acid with the concentration of 1mol/L and the mass of the aniline is 50 times, ammonium persulfate with the mass of 0.8 time of the aniline is added at the speed of 3mL/min, the mixture is stirred and reacts for 1h at the temperature of minus 5 ℃, and then is filtered to obtain a modified aniline blank, the modified aniline blank is washed for 3 times by hydrochloric acid with the concentration of 1mol/L, then washed for 4 times by ammonia water with the concentration of 1mol/L, washed by deionized water until the washing liquid is neutral, and freeze-dried to obtain modified aniline;
(2) Mixing iron oxychloride and ethanol according to a mass ratio of 1:30, adding the modified aniline obtained in the step (1) with the mass of 0.2 time of the iron oxychloride into a beaker, ultrasonically dispersing for 60min under the condition of 50kHz, stirring and mixing for 40min under the condition of 700r/min of rotation speed, filtering to obtain a pre-modified iron oxychloride blank, and drying the pre-modified iron oxychloride blank for 1h at the temperature of 85 ℃ to obtain a foaming agent blank;
(3) Mixing the foaming agent blank obtained in the step (2) with a magnesium sulfate solution with the mass fraction of 10% according to the mass ratio of 1:25, mixing the mixture in a flask, stirring and mixing the mixture for 2 hours at room temperature, adjusting the pH of the materials in the pH flask to 4.5 by using hydrochloric acid with the concentration of 1mol/L, adding ammonium sulfate with the mass of 0.1 time of that of foaming agent blanks and phytic acid with the mass of 0.4 time of that of the foaming agent blanks into the flask, reacting the mixture for 4 hours at the temperature of 70 ℃ and the ultrasonic frequency of 60kHz, introducing ammonia gas into the flask at the speed of 60mL/min, continuously stirring and reacting the mixture for 55 minutes at the temperature of 100 ℃ and the rotating speed of 400r/min, aging the mixture for 10 hours at room temperature, and filtering and modifying the foaming agent;
(4) And (3) heating the thermoplastic polyurethane elastomer rubber to be molten, adding the modified foaming agent obtained in the step (3) with the mass of 0.15 time of that of the thermoplastic polyurethane elastomer rubber, stirring and mixing for 4min at the temperature of 170 ℃ and the rotating speed of 400r/min to obtain a mixture, adding the mixture into a mold, pressing for 10min at the temperature of 170 ℃ and the pressure of 5MPa, and forming to obtain the dustproof and soundproof plate with the buffering function.
Optimally, the preparation method of the iron oxychloride in the step (2) comprises the steps of adding ferric trichloride hexahydrate into a muffle furnace, heating to 240 ℃ at a heating rate of 1 ℃/min, keeping the temperature at the temperature for 60min, discharging to obtain an iron oxychloride blank, and mixing the iron oxychloride blank and water according to a mass ratio of 1:100, ultrasonically stripping for 80min under the condition that the frequency is 60kHz, and filtering to obtain the ferric oxychloride.
Comparative example
A dustproof acoustic celotex board with buffer function, by weight, mainly includes: 100 parts of thermoplastic polyurethane elastomer rubber and 15 parts of modified foaming agent.
A preparation method of a dustproof sound insulation board with a buffering function mainly comprises the following preparation steps:
(1) Mixing ferric oxychloride and ethanol according to a mass ratio of 1:30, adding aniline with the mass 0.2 times that of the ferric oxychloride into the beaker, ultrasonically dispersing for 60min under the condition of 50kHz, stirring and mixing for 40min under the condition of 700r/min, filtering to obtain a pre-modified ferric oxychloride blank, and drying the pre-modified ferric oxychloride blank for 1h at the temperature of 85 ℃ to obtain a foaming agent blank;
(2) Mixing the foaming agent blank obtained in the step (1) with a magnesium sulfate solution with the mass fraction of 10% according to the mass ratio of 1:25, mixing the mixture in a flask, stirring and mixing the mixture for 2 hours at room temperature, adjusting the pH of the materials in the pH flask to 4.5 by using hydrochloric acid with the concentration of 1mol/L, adding ammonium sulfate with the mass of 0.1 time of that of foaming agent blanks and phytic acid with the mass of 0.4 time of that of the foaming agent blanks into the flask, reacting the mixture for 4 hours at the temperature of 70 ℃ and the ultrasonic frequency of 60kHz, introducing ammonia gas into the flask at the speed of 60mL/min, continuously stirring and reacting the mixture for 55 minutes at the temperature of 100 ℃ and the rotating speed of 400r/min, aging the mixture for 10 hours at room temperature, and filtering and modifying the foaming agent;
(3) And (3) heating the thermoplastic polyurethane elastomer rubber to be molten, adding the modified foaming agent obtained in the step (2) with the mass of 0.15 time of that of the thermoplastic polyurethane elastomer rubber, stirring and mixing for 4min at the temperature of 170 ℃ and the rotating speed of 400r/min to obtain a mixture, adding the mixture into a mold, pressing for 10min at the temperature of 170 ℃ and the pressure of 5MPa, and forming to obtain the dustproof and soundproof plate with the buffering function.
Optimally, the preparation method of the iron oxychloride in the step (1) comprises the steps of adding ferric trichloride hexahydrate into a muffle furnace, heating to 240 ℃ at the heating rate of 1 ℃/min, keeping the temperature at the temperature for 60min, discharging to obtain an iron oxychloride blank, and mixing the iron oxychloride blank and water according to the mass ratio of 1:100, ultrasonically stripping for 80min under the condition that the frequency is 60kHz, and filtering to obtain the ferric oxychloride.
Examples of effects
Table 1 below shows the results of performance analysis of the dustproof and soundproof panel having the buffering function using examples 1 to 3 of the present invention and the comparative example.
TABLE 1
| Example 1 | Example 2 | Example 3 | Comparative example | |
| Coefficient of buffer | 1.35 | 0.89 | 0.93 | 0.62 |
| Coefficient of sound absorption | 0.45 | 0.16 | 0.21 | 0.08 |
From the comparison of the experimental data of example 1 and the comparative example in table 1, it can be found that the addition of the modified foaming agent in the preparation of the dustproof and soundproof panel having the buffering function can effectively improve the buffering performance and the soundproof performance of the product; from the comparison of the experimental data of example 1 and example 2, it can be found that when modified aniline is not used in the preparation of the modified foaming agent, hydrogel cannot be formed between the ferric oxychloride, and the basic magnesium sulfate whisker cannot be effectively adsorbed between the ferric oxychloride, thereby seriously affecting the performance of the product; from the comparison of the experimental data of example 1 and example 3, it can be found that basic magnesium sulfate whiskers cannot be filled between the oxychlorinated irons without adding oxidized starch when preparing the modified foaming agent, thereby affecting the sound insulation performance of the product.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. The dustproof sound-insulation board with the buffering function is characterized by comprising the following raw material components in parts by weight: 80 to 100 parts of thermoplastic polyurethane elastomer rubber and 8 to 18 parts of modified foaming agent;
the modified foaming agent is prepared from raw materials including ferric oxychloride, modified aniline, oxidized starch, magnesium ion solution and phytic acid;
the modified aniline is prepared from diamino-p-phenylenediamine sulfate, aniline, sodium chloride and ammonium persulfate as raw materials.
2. The dustproof and soundproof plate with buffering function according to claim 1, wherein the oxidized starch is prepared by oxidizing tapioca starch with sodium periodate.
3. The dustproof and soundproof plate with the buffering function according to claim 2, wherein the magnesium ion solution is a magnesium sulfate solution with a mass fraction of 10%; the thermoplastic polyurethane elastomer rubber is the thermoplastic polyurethane elastomer rubber of which the Bayer material science and technology group model is 5377A.
4. The dustproof and soundproof board with the buffering function according to claim 3, characterized in that the dustproof and soundproof board with the buffering function comprises the following raw materials in parts by weight: 100 parts of thermoplastic polyurethane elastomer rubber and 15 parts of modified foaming agent.
5. A preparation method of a dustproof and soundproof plate with a buffering function is characterized by comprising the following preparation steps:
(1) Mixing aniline, diamino p-phenylenediamine sulfate and sodium chloride in hydrochloric acid, adding ammonium persulfate, stirring for reaction, filtering, washing and drying to obtain modified aniline;
(2) Mixing ferric oxychloride with an organic solvent, adding the modified aniline obtained in the step (1), performing ultrasonic dispersion, stirring and mixing, filtering, and drying to obtain pre-modified ferric oxychloride;
(3) Mixing oxidized starch with water to obtain an oxidized starch suspension, mixing the oxidized starch suspension with the pre-modified ferric oxychloride obtained in the step (2), adjusting the pH value to acidity, performing ultrasonic dispersion reaction in an inert gas atmosphere, filtering, and drying to obtain a foaming agent blank;
(4) Mixing the foaming agent blank obtained in the step (3) with a magnesium ion solution, stirring and mixing, adjusting the pH value to acidity, adding ammonium sulfate and phytic acid, performing ultrasonic reaction, then adding ammonia gas, continuously stirring and reacting, aging, and filtering to obtain a modified foaming agent;
(5) And (5) heating and melting the thermoplastic polyurethane elastomer rubber, adding the modified foaming agent obtained in the step (4), stirring and mixing to obtain a mixture, adding the mixture into a mold, and performing compression molding to obtain the dustproof and soundproof board with the buffering function.
6. The method for manufacturing a dustproof acoustic panel with a buffering function according to claim 5, wherein the method for manufacturing a dustproof acoustic panel with a buffering function comprises the following manufacturing steps:
(1) Aniline, diamino p-phenylenediamine sulfate and sodium chloride are mixed according to a mass ratio of 4:1:0.5 to 4.2:1:0.5 of the modified aniline blank is mixed in hydrochloric acid with the mass of 40-50 times of that of aniline and the concentration of 1mol/L, ammonium persulfate with the mass of 0.8-0.9 time of that of aniline is added at the speed of 1-5 mL/min, the mixture is stirred and reacted for 1h at the temperature of-8-3 ℃, then the mixture is filtered to obtain the modified aniline blank, the modified aniline blank is washed for 2-3 times by hydrochloric acid with the concentration of 1mol/L, then washed for 3-5 times by ammonia water with the concentration of 1mol/L, then washed by deionized water until the washing liquid is neutral, and the modified aniline is obtained after freeze drying;
(2) Mixing ferric oxychloride and ethanol according to a mass ratio of 1:20 to 1:40, mixing the materials in a beaker, adding the modified aniline obtained in the step (1) with the mass of 0.1 to 0.3 times of the iron oxychloride in the beaker, carrying out ultrasonic dispersion for 60 to 120min under the condition of the frequency of 45 to 60kHz, then stirring and mixing for 20 to 60min under the condition of the rotating speed of 600 to 800r/min, filtering to obtain a pre-modified iron oxychloride blank, and drying the pre-modified iron oxychloride blank for 1 to 2h under the condition of the temperature of 85 ℃ to obtain the pre-modified iron oxychloride;
(3) Mixing oxidized starch and water according to the mass ratio of 1:10 to 1:15, stirring and mixing at the temperature of 45-60 ℃ and the rotating speed of 600-700r/min for 20-80min to obtain an oxidized starch suspension, and mixing the oxidized starch suspension with the pre-modified ferric chloride obtained in the step (2) according to the mass ratio of 10:1 to 10:3, mixing the mixture in a three-neck flask, adjusting the pH value of the material in the three-neck flask to 5-5.8 by using hydrochloric acid with the concentration of 0.5mol/L, introducing nitrogen into the three-neck flask at the speed of 50-80mL/min, reacting for 5-6 h at the temperature of 55-65 ℃, filtering to obtain a filter cake, and drying the filter cake to constant weight at the temperature of 80 ℃ to obtain a foaming agent blank;
(4) Mixing the foaming agent blank obtained in the step (3) with a magnesium sulfate solution with the mass fraction of 10% according to the mass ratio of 1:20 to 1:30, mixing the mixture in a flask, stirring and mixing the mixture for 2 to 3 hours at room temperature, adjusting the pH of the material in the pH flask to 4 to 6 by using hydrochloric acid with the concentration of 1mol/L, adding ammonium sulfate with the mass of 0.1 to 0.2 times of that of a foaming agent blank and phytic acid with the mass of 0.2 to 0.6 times of that of the foaming agent blank into the flask, reacting the mixture for 3 to 5 hours at the temperature of 60 to 85 ℃ and the ultrasonic frequency of 55 to 65kHz, introducing ammonia gas into the flask at the speed of 50 to 70mL/min, continuously stirring and reacting the mixture for 50 to 60min at the temperature of 100 ℃ and the rotating speed of 300 to 500r/min, and aging the mixture for 10 hours at room temperature, and filtering the mixture to modify the foaming agent;
(5) And (3) heating the thermoplastic polyurethane elastomer rubber to be molten, adding the modified foaming agent obtained in the step (4) with the mass of 0.15 time of that of the thermoplastic polyurethane elastomer rubber, stirring and mixing for 3-5 min under the conditions of the temperature of 170-180 ℃ and the rotating speed of 300-500r/min to obtain a mixture, adding the mixture into a mold, pressing for 10min under the conditions of the temperature of 160 ℃ and the pressure of 5MPa, and forming to obtain the dustproof sound insulation board with the buffering function.
7. The method for preparing dustproof soundproof plate with buffering function according to claim 5, wherein the method for preparing the ferric oxychloride in the step (2) is that ferric trichloride hexahydrate is added into a muffle furnace, the temperature is raised to 240 ℃ at a heating rate of 1 ℃/min, the temperature is kept for 60min at the temperature, then discharging is carried out to obtain ferric oxychloride blank, and the ferric oxychloride blank and water are mixed according to a mass ratio of 1:100, ultrasonically stripping for 60 to 180min under the condition of the frequency of 50 to 60kHz, and filtering to obtain the ferric oxychloride.
8. The method for preparing a dustproof and soundproof plate with a buffering function according to claim 5, wherein the oxidized starch of the step (3) is prepared by mixing tapioca starch and water in a mass ratio of 1:30 to 1:50, adding a 12 mass percent sodium periodate solution which is 3 to 6 times of the mass of the cassava starch, adjusting the pH value to 5, reacting for 5 hours in a dark place at the temperature of 25 to 35 ℃, filtering, and drying in vacuum to obtain the oxidized starch.
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