CN113150534A - Solvent-free environment-friendly SPUA material and preparation method thereof - Google Patents
Solvent-free environment-friendly SPUA material and preparation method thereof Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 46
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 41
- 239000000945 filler Substances 0.000 claims abstract description 35
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 29
- 239000004970 Chain extender Substances 0.000 claims abstract description 16
- 239000005057 Hexamethylene diisocyanate Substances 0.000 claims abstract description 16
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 16
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229920000570 polyether Polymers 0.000 claims abstract description 16
- 229920000909 polytetrahydrofuran Polymers 0.000 claims abstract description 16
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 14
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 90
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 66
- 238000010438 heat treatment Methods 0.000 claims description 42
- 238000003756 stirring Methods 0.000 claims description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 41
- 239000000047 product Substances 0.000 claims description 38
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 35
- 239000000843 powder Substances 0.000 claims description 31
- 239000000243 solution Substances 0.000 claims description 27
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 26
- 239000004327 boric acid Substances 0.000 claims description 26
- 239000011812 mixed powder Substances 0.000 claims description 24
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 24
- 239000011268 mixed slurry Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 19
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 18
- 239000008367 deionised water Substances 0.000 claims description 18
- 229910021641 deionized water Inorganic materials 0.000 claims description 18
- 238000001035 drying Methods 0.000 claims description 18
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 16
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 claims description 16
- 229910000397 disodium phosphate Inorganic materials 0.000 claims description 16
- 235000019800 disodium phosphate Nutrition 0.000 claims description 16
- -1 dodecyl primary amine Chemical class 0.000 claims description 16
- 239000005995 Aluminium silicate Substances 0.000 claims description 14
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 claims description 14
- 235000012211 aluminium silicate Nutrition 0.000 claims description 14
- 239000007864 aqueous solution Substances 0.000 claims description 14
- VZDYWEUILIUIDF-UHFFFAOYSA-J cerium(4+);disulfate Chemical compound [Ce+4].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O VZDYWEUILIUIDF-UHFFFAOYSA-J 0.000 claims description 14
- 229910000355 cerium(IV) sulfate Inorganic materials 0.000 claims description 14
- 229910052593 corundum Inorganic materials 0.000 claims description 14
- 239000010431 corundum Substances 0.000 claims description 14
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 14
- 239000002244 precipitate Substances 0.000 claims description 14
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 14
- 238000001291 vacuum drying Methods 0.000 claims description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 12
- 239000011496 polyurethane foam Substances 0.000 claims description 12
- 238000005406 washing Methods 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 8
- 238000005245 sintering Methods 0.000 claims description 8
- 239000002904 solvent Substances 0.000 claims description 7
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 6
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 6
- 238000000498 ball milling Methods 0.000 claims description 6
- 238000004821 distillation Methods 0.000 claims description 6
- 239000000706 filtrate Substances 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 230000007935 neutral effect Effects 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 238000002791 soaking Methods 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 2
- 239000003960 organic solvent Substances 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 9
- 238000000576 coating method Methods 0.000 description 8
- 229920002396 Polyurea Polymers 0.000 description 7
- 229920002635 polyurethane Polymers 0.000 description 6
- 239000004814 polyurethane Substances 0.000 description 6
- 229920001971 elastomer Polymers 0.000 description 5
- 239000000806 elastomer Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000007792 addition Methods 0.000 description 4
- KXDHJXZQYSOELW-UHFFFAOYSA-N carbonic acid monoamide Natural products NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 235000019441 ethanol Nutrition 0.000 description 4
- KJAMZCVTJDTESW-UHFFFAOYSA-N tiracizine Chemical compound C1CC2=CC=CC=C2N(C(=O)CN(C)C)C2=CC(NC(=O)OCC)=CC=C21 KJAMZCVTJDTESW-UHFFFAOYSA-N 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 239000002216 antistatic agent Substances 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 239000004202 carbamide Substances 0.000 description 2
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 2
- TYAVIWGEVOBWDZ-UHFFFAOYSA-K cerium(3+);phosphate Chemical compound [Ce+3].[O-]P([O-])([O-])=O TYAVIWGEVOBWDZ-UHFFFAOYSA-K 0.000 description 2
- OZECDDHOAMNMQI-UHFFFAOYSA-H cerium(3+);trisulfate Chemical compound [Ce+3].[Ce+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O OZECDDHOAMNMQI-UHFFFAOYSA-H 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 125000004185 ester group Chemical group 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 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
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/08—Polyurethanes from polyethers
-
- 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
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- 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
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/328—Phosphates of heavy metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/04—Antistatic
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention discloses a solvent-free environment-friendly SPUA material and a preparation method thereof, wherein the solvent-free environment-friendly SPUA material comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 50-70 parts of hexamethylene diisocyanate and 30-50 parts of polytetramethylene ether glycol; the component B comprises the following raw materials in parts by weight: 30-45 parts of amino-terminated polyether, 20-30 parts of amino chain extender, 10-25 parts of porous filler and 1-5 parts of antistatic auxiliary agent; uniformly mixing hexamethylene diisocyanate and polytetramethylene ether glycol to prepare a component A; uniformly mixing the amino-terminated polyether, the amino chain extender, the porous filler and the antistatic auxiliary agent to prepare a component B; step three, uniformly mixing the component A and the component B according to the weight ratio of 3: 5 to prepare the solvent-free environment-friendly SPUA material; does not contain organic solvent, does not release VOC, and meets the requirement of environmental protection.
Description
Technical Field
The invention belongs to the technical field of high polymer materials, and particularly relates to a solvent-free environment-friendly SPUA material and a preparation method thereof.
Background
The polyurea elastomer is a novel environment-friendly coating, and the technology for spraying the polyurea elastomer is a novel solvent-free pollution-free green construction technology which is developed and developed for meeting the environment-friendly requirement after low (pollution-free) coating technologies such as high-solid coatings, water-based coatings, photocureable coatings, powder coatings and the like in recent decades abroad. The technology of spraying polyurea elastomer organically combines the excellent performance of polyurea with the construction technology of quick spraying, on-site curing and the like, so that the polyurea elastomer shows incomparable superiority in engineering application. Compared with the traditional coating, the spray polyurea elastomer material has the characteristics of no solvent, quick curing, insensitivity to humidity and temperature, short construction period, excellent high-temperature resistance and aging resistance and the like; however, when the existing SPUA material is applied to the fields of automobiles, railway vehicles, bridge pipelines, steel structures, containers and the like, excellent wear resistance and antistatic performance are required.
Disclosure of Invention
In order to overcome the technical problems, the invention provides a solvent-free environment-friendly SPUA material and a preparation method thereof.
The purpose of the invention can be realized by the following technical scheme:
a solvent-free environment-friendly SPUA material comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 50-70 parts of hexamethylene diisocyanate and 30-50 parts of polytetramethylene ether glycol; the component B comprises the following raw materials in parts by weight: 30-45 parts of amino-terminated polyether, 20-30 parts of amino chain extender, 10-25 parts of porous filler and 1-5 parts of antistatic auxiliary agent;
the solvent-free environment-friendly SPUA material is prepared by the following method:
firstly, mixing hexamethylene diisocyanate and polytetramethylene ether glycol uniformly to prepare a component A;
step two, uniformly mixing the amino-terminated polyether, the amino chain extender, the porous filler and the antistatic auxiliary agent to prepare a component B;
and step three, uniformly mixing the component A and the component B according to the weight ratio of 3: 5 to prepare the solvent-free environment-friendly SPUA material.
Further, the porous filler is prepared by the following method:
step S1, respectively adding ceric sulfate and sodium hydrogen phosphate into two beakers, adding deionized water, respectively preparing 0.5mol/L and 1mol/L solutions a and b, dropwise adding the solution b into the solution a under the heating of a water bath at 25-30 ℃, stirring while dropwise adding, controlling the dropwise adding time to be 10min, adding 28 mass percent of ammonia water after completely dropwise adding to adjust the pH until the pH is =4-5, preparing a suspension, standing for 24h, preparing a precipitate, washing until the filtrate is neutral, then placing the precipitate into a vacuum drying oven, carrying out vacuum drying at 110 ℃ for 4h at 100 ℃ and 110 ℃, then transferring the precipitate into a heating furnace, and carrying out heat preservation at 300 ℃, 500 ℃, 800 ℃ and 1000 ℃ respectively at the heating rate of 10 ℃/min for 1h to prepare a product A;
step S2, uniformly mixing silicon carbide powder, white corundum powder, a product A and kaolin powder to obtain mixed powder, adding silica sol into the mixed powder, uniformly mixing, adding deionized water to adjust the solid-liquid ratio to be 60%, then dropwise adding a sodium hydroxide solution with the concentration of 1mol/L to adjust the pH until the pH is =10-10.5, standing for 2h, transferring the mixture into a planetary ball mill, ball-milling for 60min at the rotating speed of 350 plus 400r/min at the ball-material ratio of 3: 1, and dropwise adding n-butyl alcohol to defoam to obtain mixed slurry;
step S3, soaking polyurethane foam in 15% sodium hydroxide aqueous solution by mass, heating in a water bath at 45-60 ℃, magnetically stirring, filtering, washing with deionized water, adding into 35% silica sol by mass, drying at 50 ℃ for 4h, taking out, adding into the mixed slurry prepared in step S2, extruding, drying to prepare a preform, sintering to prepare the porous filler, and controlling the weight ratio of the polyurethane foam to the sodium hydroxide aqueous solution to the silica sol to be 1: 10: 3: 5.
Step S1, cerium sulfate and sodium hydrogen phosphate are prepared into solution and mixed, the cerium sulfate and the sodium hydrogen phosphate react to generate an intermediate amorphous product, then the temperature is raised to 100-300 ℃, the intermediate amorphous product loses crystal water, then the temperature is raised continuously, crystallization is started, and finally a product A is prepared, wherein the product A is cerium phosphate; in the step S2, silicon carbide powder, white corundum powder, the product A and kaolin powder are uniformly mixed to prepare mixed powder, and finally mixed slurry is prepared, in the step S3, polyurethane is soaked in a sodium hydroxide aqueous solution, ester groups of the polyurethane are hydrolyzed under the catalytic action of sodium hydroxide to generate carboxylic acid and alcohol, carbamate reacts with water to generate the carbamic acid and the alcohol, and urea is hydrolyzed into the carbamic acid and the amine, so that the surface erosion of foam is rough, the specific surface area is increased, the polyurethane and the mixed slurry are uniformly and tightly combined, and then sintering is carried out to prepare the porous filler, the product A is added, and the lamellar crystal form formed at 1000 ℃ can provide excellent mechanical properties for the prepared porous filler.
Further, in step S1, the molar ratio of ceric sulfate to sodium hydrogen phosphate is controlled to be 1: 1, in step S2, the weight ratio of silicon carbide powder, white corundum powder, product A and kaolin powder is controlled to be 6.5: 2: 1: 0.5, the dosage of silica sol is 10% of the weight of the mixed powder, and the dosage of n-butyl alcohol is 1% of the weight of the mixed powder.
Further, the antistatic auxiliary agent is prepared by the following method:
step S11, adding dodecyl primary amine and absolute ethyl alcohol into a three-neck flask, heating in a water bath at 45-60 ℃, magnetically stirring at a rotating speed of 100r/min for 30-45min, adding ethylene oxide, continuously stirring for 10min, adding dilute hydrochloric acid with the mass fraction of 10%, heating to 75 ℃, magnetically stirring for 3h, transferring to a vacuum drying oven, drying until the solvent is completely evaporated to obtain an intermediate 1, and controlling the weight ratio of the dodecyl primary amine to the ethylene oxide to the dilute hydrochloric acid to be 1: 2: 0.3-0.5;
step S12, adding the intermediate 1, the toluene and the boric acid obtained in the step S11 into a three-neck flask, magnetically stirring and heating to 110 ℃, introducing nitrogen to discharge air, adding the boric acid into the toluene, magnetically stirring for 10min, then dripping into the three-neck flask, controlling the dripping time to be 55-60min, then carrying out reduced pressure distillation until the toluene is evaporated out, obtaining the antistatic auxiliary agent, controlling the weight ratio of the intermediate 1, the toluene and the boric acid to be 1: 3-5: 1,
the weight ratio of the added toluene in two times is 1: 1, and the weight ratio of the added boric acid in two times is 1: 3.
In the step S11, dodecyl primary amine and ethylene oxide are mixed and react in absolute ethyl alcohol, 10% dilute hydrochloric acid is added, hydrochloric acid can perform affinity addition on the ethylene oxide to generate a catalytic action, so that the reaction process is accelerated, and finally an intermediate 1 is prepared, wherein the intermediate 1 belongs to an ethylene oxide amine adduct, then boric acid is added in the step S12, boron is introduced into a molecular chain, so that the compatibility of a polymer is improved, and the antistatic agent is prepared.
A preparation method of a solvent-free environment-friendly SPUA material comprises the following steps:
firstly, mixing hexamethylene diisocyanate and polytetramethylene ether glycol uniformly to prepare a component A;
step two, uniformly mixing the amino-terminated polyether, the amino chain extender, the porous filler and the antistatic auxiliary agent to prepare a component B;
and step three, uniformly mixing the component A and the component B according to the weight ratio of 3: 5 to prepare the solvent-free environment-friendly SPUA material.
The invention has the beneficial effects that:
(1) the solvent-free environment-friendly SPUA material is formed by mixing a component A and a component B, does not contain organic solvent, does not release VOC, meets the environment-friendly requirement, the porous filler in the component B can endow the material with excellent wear resistance and toughness, and the antistatic auxiliary agent can endow the material with excellent antistatic performance, wherein in the preparation process of the porous filler, ceric sulfate and sodium hydrogen phosphate are prepared into solution for mixing in step S1, the ceric sulfate and the sodium hydrogen phosphate react to generate an intermediate amorphous product, then the temperature is increased to 300 ℃, the intermediate amorphous product begins to lose crystal water, then the temperature is continuously increased, crystallization is started, and finally a product A is prepared, wherein the product A is cerium phosphate; in the step S2, silicon carbide powder, white corundum powder, the product A and kaolin powder are uniformly mixed to prepare mixed powder, and finally mixed slurry is prepared, in the step S3, polyurethane is soaked in a sodium hydroxide aqueous solution, ester groups of the polyurethane are hydrolyzed under the catalytic action of sodium hydroxide to generate carboxylic acid and alcohol, carbamate reacts with water to generate the carbamic acid and the alcohol, and urea is hydrolyzed into the carbamic acid and the amine, so that the surface erosion of foam is rough, the specific surface area is increased, the polyurethane and the mixed slurry are uniformly and tightly combined, and then sintering is carried out to prepare the porous filler, the product A is added, and the lamellar crystal form formed at 1000 ℃ can provide excellent mechanical properties for the prepared porous filler.
(2) In the preparation process of the antistatic auxiliary agent, dodecyl primary amine and ethylene oxide are mixed and reacted in absolute ethyl alcohol in step S11, 10% dilute hydrochloric acid is added, the hydrochloric acid can carry out affinity addition on the ethylene oxide to generate a catalytic action, the reaction process is further accelerated, an intermediate 1 is finally prepared, the intermediate 1 belongs to an ethylene oxide amine adduct, then boric acid is added in step S12, boron is introduced into a molecular chain, the compatibility of a polymer is improved, and the antistatic agent is prepared.
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.
Example 1
A solvent-free environment-friendly SPUA material comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 50 parts of hexamethylene diisocyanate, 30 parts of polytetramethylene ether glycol; the component B comprises the following raw materials in parts by weight: 30 parts of amino-terminated polyether, 20 parts of amino chain extender, 10 parts of porous filler and 1 part of antistatic auxiliary agent;
the solvent-free environment-friendly SPUA material is prepared by the following method:
firstly, mixing hexamethylene diisocyanate and polytetramethylene ether glycol uniformly to prepare a component A;
step two, uniformly mixing the amino-terminated polyether, the amino chain extender, the porous filler and the antistatic auxiliary agent to prepare a component B;
and step three, uniformly mixing the component A and the component B according to the weight ratio of 3: 5 to prepare the solvent-free environment-friendly SPUA material.
The porous filler is prepared by the following method:
step S1, respectively adding ceric sulfate and sodium hydrogen phosphate into two beakers, adding deionized water to respectively prepare solutions a and b with the concentrations of 0.5mol/L and 1mol/L, dropwise adding the solution b into the solution a under the heating of a water bath at 25 ℃, stirring while dropwise adding, controlling the dropwise adding time to be 10min, adding ammonia water with the mass fraction of 28% after completely dropwise adding to adjust the pH until the pH is =5, preparing a suspension, standing for 24h to prepare a precipitate, washing until the filtrate is neutral, then placing the precipitate into a vacuum drying oven to be dried in vacuum at 110 ℃ for 4h, then transferring the obtained product into a heating furnace, respectively preserving the obtained product at 300 ℃, 500 ℃, 800 ℃ and 1000 ℃ at the heating rate of 10 ℃/min for 1h to prepare a product A, and controlling the molar ratio of the ceric sulfate to the sodium hydrogen phosphate to be 1: 1;
step S2, uniformly mixing silicon carbide powder, white corundum powder, a product A and kaolin powder to obtain mixed powder, adding silica sol into the mixed powder, uniformly mixing, adding deionized water to adjust the solid-liquid ratio to be 60%, then dropwise adding a sodium hydroxide solution with the concentration of 1mol/L to adjust the pH until the pH is =10, standing for 2h, transferring the mixture into a planetary ball mill, carrying out ball milling for 60min at the rotating speed of 350r/min by using the ball-material ratio of 3: 1, dropwise adding n-butyl alcohol to defoam to obtain mixed slurry, and controlling the weight ratio of the silicon carbide powder, the white corundum powder, the product A and the kaolin powder to be 6.5: 2: 1: 0.5, the dosage of the silica sol to be 10% of the weight of the mixed powder, and the dosage of the n-butyl alcohol to be 1% of the weight of the mixed powder;
step S3, soaking polyurethane foam in 15% sodium hydroxide aqueous solution by mass fraction, heating in a water bath at 45 ℃, magnetically stirring, filtering, washing with deionized water, adding into 35% silica sol by mass fraction, drying at 50 ℃ for 4h, taking out, adding into the mixed slurry prepared in step S2, extruding, drying to prepare a preform, sintering to prepare the porous filler, and controlling the weight ratio of the polyurethane foam, the sodium hydroxide aqueous solution, the silica sol and the mixed slurry to be 1: 10: 3: 5.
The antistatic auxiliary agent is prepared by the following method:
step S11, adding dodecyl primary amine and absolute ethyl alcohol into a three-neck flask, heating in a water bath at 45 ℃, magnetically stirring at the rotating speed of 100r/min for 30min, adding ethylene oxide, continuously stirring for 10min, adding diluted hydrochloric acid with the mass fraction of 10%, heating to 75 ℃, magnetically stirring for 3h, transferring to a vacuum drying oven, drying until the solvent is completely evaporated to prepare an intermediate 1, and controlling the weight ratio of the dodecyl primary amine to the ethylene oxide to the diluted hydrochloric acid to be 1: 2: 0.3;
and S12, adding the intermediate 1, the toluene and the boric acid prepared in the step S11 into a three-neck flask, magnetically stirring and heating to 100 ℃, introducing nitrogen to discharge air, adding the boric acid into the toluene, magnetically stirring for 10min, then dripping into the three-neck flask, controlling the dripping time to be 55min, and then carrying out reduced pressure distillation until the toluene is evaporated to prepare the antistatic auxiliary agent, wherein the weight ratio of the intermediate 1, the toluene and the boric acid is 1: 3: 1, the weight ratio of the toluene added twice is 1: 1, and the weight ratio of the boric acid added twice is 1: 3.
Example 2
A solvent-free environment-friendly SPUA material comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 55 parts of hexamethylene diisocyanate, 35 parts of polytetramethylene ether glycol; the component B comprises the following raw materials in parts by weight: 35 parts of amino-terminated polyether, 22 parts of amino chain extender, 15 parts of porous filler and 2 parts of antistatic auxiliary agent;
the solvent-free environment-friendly SPUA material is prepared by the following method:
firstly, mixing hexamethylene diisocyanate and polytetramethylene ether glycol uniformly to prepare a component A;
step two, uniformly mixing the amino-terminated polyether, the amino chain extender, the porous filler and the antistatic auxiliary agent to prepare a component B;
and step three, uniformly mixing the component A and the component B according to the weight ratio of 3: 5 to prepare the solvent-free environment-friendly SPUA material.
The porous filler is prepared by the following method:
step S1, respectively adding ceric sulfate and sodium hydrogen phosphate into two beakers, adding deionized water to respectively prepare solutions a and b with the concentrations of 0.5mol/L and 1mol/L, dropwise adding the solution b into the solution a under the heating of a water bath at 25 ℃, stirring while dropwise adding, controlling the dropwise adding time to be 10min, adding ammonia water with the mass fraction of 28% after completely dropwise adding to adjust the pH until the pH is =5, preparing a suspension, standing for 24h to prepare a precipitate, washing until the filtrate is neutral, then placing the precipitate into a vacuum drying oven to be dried in vacuum at 110 ℃ for 4h, then transferring the obtained product into a heating furnace, respectively preserving the obtained product at 300 ℃, 500 ℃, 800 ℃ and 1000 ℃ at the heating rate of 10 ℃/min for 1h to prepare a product A, and controlling the molar ratio of the ceric sulfate to the sodium hydrogen phosphate to be 1: 1;
step S2, uniformly mixing silicon carbide powder, white corundum powder, a product A and kaolin powder to obtain mixed powder, adding silica sol into the mixed powder, uniformly mixing, adding deionized water to adjust the solid-liquid ratio to be 60%, then dropwise adding a sodium hydroxide solution with the concentration of 1mol/L to adjust the pH until the pH is =10, standing for 2h, transferring the mixture into a planetary ball mill, carrying out ball milling for 60min at the rotating speed of 350r/min by using the ball-material ratio of 3: 1, dropwise adding n-butyl alcohol to defoam to obtain mixed slurry, and controlling the weight ratio of the silicon carbide powder, the white corundum powder, the product A and the kaolin powder to be 6.5: 2: 1: 0.5, the dosage of the silica sol to be 10% of the weight of the mixed powder, and the dosage of the n-butyl alcohol to be 1% of the weight of the mixed powder;
step S3, soaking polyurethane foam in 15% sodium hydroxide aqueous solution by mass fraction, heating in a water bath at 45 ℃, magnetically stirring, filtering, washing with deionized water, adding into 35% silica sol by mass fraction, drying at 50 ℃ for 4h, taking out, adding into the mixed slurry prepared in step S2, extruding, drying to prepare a preform, sintering to prepare the porous filler, and controlling the weight ratio of the polyurethane foam, the sodium hydroxide aqueous solution, the silica sol and the mixed slurry to be 1: 10: 3: 5.
The antistatic auxiliary agent is prepared by the following method:
step S11, adding dodecyl primary amine and absolute ethyl alcohol into a three-neck flask, heating in a water bath at 45 ℃, magnetically stirring at the rotating speed of 100r/min for 30min, adding ethylene oxide, continuously stirring for 10min, adding diluted hydrochloric acid with the mass fraction of 10%, heating to 75 ℃, magnetically stirring for 3h, transferring to a vacuum drying oven, drying until the solvent is completely evaporated to prepare an intermediate 1, and controlling the weight ratio of the dodecyl primary amine to the ethylene oxide to the diluted hydrochloric acid to be 1: 2: 0.3;
and S12, adding the intermediate 1, the toluene and the boric acid prepared in the step S11 into a three-neck flask, magnetically stirring and heating to 100 ℃, introducing nitrogen to discharge air, adding the boric acid into the toluene, magnetically stirring for 10min, then dripping into the three-neck flask, controlling the dripping time to be 55min, and then carrying out reduced pressure distillation until the toluene is evaporated to prepare the antistatic auxiliary agent, wherein the weight ratio of the intermediate 1, the toluene and the boric acid is 1: 3: 1, the weight ratio of the toluene added twice is 1: 1, and the weight ratio of the boric acid added twice is 1: 3.
Example 3
A solvent-free environment-friendly SPUA material comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 65 parts of hexamethylene diisocyanate, 45 parts of polytetramethylene ether glycol; the component B comprises the following raw materials in parts by weight: 40 parts of amino-terminated polyether, 28 parts of amino chain extender, 20 parts of porous filler and 3 parts of antistatic auxiliary agent;
the solvent-free environment-friendly SPUA material is prepared by the following method:
firstly, mixing hexamethylene diisocyanate and polytetramethylene ether glycol uniformly to prepare a component A;
step two, uniformly mixing the amino-terminated polyether, the amino chain extender, the porous filler and the antistatic auxiliary agent to prepare a component B;
and step three, uniformly mixing the component A and the component B according to the weight ratio of 3: 5 to prepare the solvent-free environment-friendly SPUA material.
The porous filler is prepared by the following method:
step S1, respectively adding ceric sulfate and sodium hydrogen phosphate into two beakers, adding deionized water to respectively prepare solutions a and b with the concentrations of 0.5mol/L and 1mol/L, dropwise adding the solution b into the solution a under the heating of a water bath at 25 ℃, stirring while dropwise adding, controlling the dropwise adding time to be 10min, adding ammonia water with the mass fraction of 28% after completely dropwise adding to adjust the pH until the pH is =5, preparing a suspension, standing for 24h to prepare a precipitate, washing until the filtrate is neutral, then placing the precipitate into a vacuum drying oven to be dried in vacuum at 110 ℃ for 4h, then transferring the obtained product into a heating furnace, respectively preserving the obtained product at 300 ℃, 500 ℃, 800 ℃ and 1000 ℃ at the heating rate of 10 ℃/min for 1h to prepare a product A, and controlling the molar ratio of the ceric sulfate to the sodium hydrogen phosphate to be 1: 1;
step S2, uniformly mixing silicon carbide powder, white corundum powder, a product A and kaolin powder to obtain mixed powder, adding silica sol into the mixed powder, uniformly mixing, adding deionized water to adjust the solid-liquid ratio to be 60%, then dropwise adding a sodium hydroxide solution with the concentration of 1mol/L to adjust the pH until the pH is =10, standing for 2h, transferring the mixture into a planetary ball mill, carrying out ball milling for 60min at the rotating speed of 350r/min by using the ball-material ratio of 3: 1, dropwise adding n-butyl alcohol to defoam to obtain mixed slurry, and controlling the weight ratio of the silicon carbide powder, the white corundum powder, the product A and the kaolin powder to be 6.5: 2: 1: 0.5, the dosage of the silica sol to be 10% of the weight of the mixed powder, and the dosage of the n-butyl alcohol to be 1% of the weight of the mixed powder;
step S3, soaking polyurethane foam in 15% sodium hydroxide aqueous solution by mass fraction, heating in a water bath at 45 ℃, magnetically stirring, filtering, washing with deionized water, adding into 35% silica sol by mass fraction, drying at 50 ℃ for 4h, taking out, adding into the mixed slurry prepared in step S2, extruding, drying to prepare a preform, sintering to prepare the porous filler, and controlling the weight ratio of the polyurethane foam, the sodium hydroxide aqueous solution, the silica sol and the mixed slurry to be 1: 10: 3: 5.
The antistatic auxiliary agent is prepared by the following method:
step S11, adding dodecyl primary amine and absolute ethyl alcohol into a three-neck flask, heating in a water bath at 45 ℃, magnetically stirring at the rotating speed of 100r/min for 30min, adding ethylene oxide, continuously stirring for 10min, adding diluted hydrochloric acid with the mass fraction of 10%, heating to 75 ℃, magnetically stirring for 3h, transferring to a vacuum drying oven, drying until the solvent is completely evaporated to prepare an intermediate 1, and controlling the weight ratio of the dodecyl primary amine to the ethylene oxide to the diluted hydrochloric acid to be 1: 2: 0.3;
and S12, adding the intermediate 1, the toluene and the boric acid prepared in the step S11 into a three-neck flask, magnetically stirring and heating to 100 ℃, introducing nitrogen to discharge air, adding the boric acid into the toluene, magnetically stirring for 10min, then dripping into the three-neck flask, controlling the dripping time to be 55min, and then carrying out reduced pressure distillation until the toluene is evaporated to prepare the antistatic auxiliary agent, wherein the weight ratio of the intermediate 1, the toluene and the boric acid is 1: 3: 1, the weight ratio of the toluene added twice is 1: 1, and the weight ratio of the boric acid added twice is 1: 3.
Example 4
A solvent-free environment-friendly SPUA material comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 70 parts of hexamethylene diisocyanate and 50 parts of polytetramethylene ether glycol; the component B comprises the following raw materials in parts by weight: 45 parts of amino-terminated polyether, 30 parts of amino chain extender, 25 parts of porous filler and 5 parts of antistatic auxiliary agent;
the solvent-free environment-friendly SPUA material is prepared by the following method:
firstly, mixing hexamethylene diisocyanate and polytetramethylene ether glycol uniformly to prepare a component A;
step two, uniformly mixing the amino-terminated polyether, the amino chain extender, the porous filler and the antistatic auxiliary agent to prepare a component B;
and step three, uniformly mixing the component A and the component B according to the weight ratio of 3: 5 to prepare the solvent-free environment-friendly SPUA material.
The porous filler is prepared by the following method:
step S1, respectively adding ceric sulfate and sodium hydrogen phosphate into two beakers, adding deionized water to respectively prepare solutions a and b with the concentrations of 0.5mol/L and 1mol/L, dropwise adding the solution b into the solution a under the heating of a water bath at 25 ℃, stirring while dropwise adding, controlling the dropwise adding time to be 10min, adding ammonia water with the mass fraction of 28% after completely dropwise adding to adjust the pH until the pH is =5, preparing a suspension, standing for 24h to prepare a precipitate, washing until the filtrate is neutral, then placing the precipitate into a vacuum drying oven to be dried in vacuum at 110 ℃ for 4h, then transferring the obtained product into a heating furnace, respectively preserving the obtained product at 300 ℃, 500 ℃, 800 ℃ and 1000 ℃ at the heating rate of 10 ℃/min for 1h to prepare a product A, and controlling the molar ratio of the ceric sulfate to the sodium hydrogen phosphate to be 1: 1;
step S2, uniformly mixing silicon carbide powder, white corundum powder, a product A and kaolin powder to obtain mixed powder, adding silica sol into the mixed powder, uniformly mixing, adding deionized water to adjust the solid-liquid ratio to be 60%, then dropwise adding a sodium hydroxide solution with the concentration of 1mol/L to adjust the pH until the pH is =10, standing for 2h, transferring the mixture into a planetary ball mill, carrying out ball milling for 60min at the rotating speed of 350r/min by using the ball-material ratio of 3: 1, dropwise adding n-butyl alcohol to defoam to obtain mixed slurry, and controlling the weight ratio of the silicon carbide powder, the white corundum powder, the product A and the kaolin powder to be 6.5: 2: 1: 0.5, the dosage of the silica sol to be 10% of the weight of the mixed powder, and the dosage of the n-butyl alcohol to be 1% of the weight of the mixed powder;
step S3, soaking polyurethane foam in 15% sodium hydroxide aqueous solution by mass fraction, heating in a water bath at 45 ℃, magnetically stirring, filtering, washing with deionized water, adding into 35% silica sol by mass fraction, drying at 50 ℃ for 4h, taking out, adding into the mixed slurry prepared in step S2, extruding, drying to prepare a preform, sintering to prepare the porous filler, and controlling the weight ratio of the polyurethane foam, the sodium hydroxide aqueous solution, the silica sol and the mixed slurry to be 1: 10: 3: 5.
The antistatic auxiliary agent is prepared by the following method:
step S11, adding dodecyl primary amine and absolute ethyl alcohol into a three-neck flask, heating in a water bath at 45 ℃, magnetically stirring at the rotating speed of 100r/min for 30min, adding ethylene oxide, continuously stirring for 10min, adding diluted hydrochloric acid with the mass fraction of 10%, heating to 75 ℃, magnetically stirring for 3h, transferring to a vacuum drying oven, drying until the solvent is completely evaporated to prepare an intermediate 1, and controlling the weight ratio of the dodecyl primary amine to the ethylene oxide to the diluted hydrochloric acid to be 1: 2: 0.3;
and S12, adding the intermediate 1, the toluene and the boric acid prepared in the step S11 into a three-neck flask, magnetically stirring and heating to 100 ℃, introducing nitrogen to discharge air, adding the boric acid into the toluene, magnetically stirring for 10min, then dripping into the three-neck flask, controlling the dripping time to be 55min, and then carrying out reduced pressure distillation until the toluene is evaporated to prepare the antistatic auxiliary agent, wherein the weight ratio of the intermediate 1, the toluene and the boric acid is 1: 3: 1, the weight ratio of the toluene added twice is 1: 1, and the weight ratio of the boric acid added twice is 1: 3.
Comparative example 1
This comparative example compares to example 1 without the addition of a porous filler.
Comparative example 2
In comparison with example 1, the antistatic auxiliary was not added in this comparative example.
Comparative example 3
The comparative example is the polyurea coating special for the sewage tank, which is prepared by the Gallery JinYu thermal insulation materials Co.
The properties of the SPUA materials prepared in examples 1 to 4 and comparative examples 1 to 3 were measured, and the results are shown in the following table;
resistance to 25 ° bending: the test was performed according to SY/T0315-2005 appendix E.
Impact strength: the test was performed according to SY/T0315-2005 appendix F.
Shore D hardness: the test was carried out according to GB/T2411.
Antistatic performance:
as can be seen from the above table, examples 1 to 4 have no cracks or leak points in the 25 ℃ bend resistance test, 23 to 25J impact strength, 90 to 92HD hardness, and 1X 10 surface resistivity6-1.5×106Omega; comparative examples 1 and 3 exhibited cracks, comparative example 2 exhibited no cracks or no leak points, and had an impact strength of 12 to 20J, a hardness of 60 to 80HD, and a surface resistivity of 1X 106-8×1010Ω。
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.
Claims (5)
1. The solvent-free environment-friendly SPUA material is characterized by comprising a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 50-70 parts of hexamethylene diisocyanate and 30-50 parts of polytetramethylene ether glycol; the component B comprises the following raw materials in parts by weight: 30-45 parts of amino-terminated polyether, 20-30 parts of amino chain extender, 10-25 parts of porous filler and 1-5 parts of antistatic auxiliary agent;
the solvent-free environment-friendly SPUA material is prepared by the following method:
firstly, mixing hexamethylene diisocyanate and polytetramethylene ether glycol uniformly to prepare a component A;
step two, uniformly mixing the amino-terminated polyether, the amino chain extender, the porous filler and the antistatic auxiliary agent to prepare a component B;
and step three, uniformly mixing the component A and the component B according to the weight ratio of 3: 5 to prepare the solvent-free environment-friendly SPUA material.
2. The solvent-free environment-friendly SPUA material according to claim 1 wherein the porous filler is prepared by the following method:
step S1, respectively adding ceric sulfate and sodium hydrogen phosphate into two beakers, adding deionized water, respectively preparing 0.5mol/L and 1mol/L solutions a and b, dropwise adding the solution b into the solution a under the heating of a water bath at 25-30 ℃, stirring while dropwise adding, controlling the dropwise adding time to be 10min, adding 28 mass percent of ammonia water after completely dropwise adding to adjust the pH until the pH is =4-5, preparing a suspension, standing for 24h, preparing a precipitate, washing until the filtrate is neutral, then placing the precipitate into a vacuum drying oven, carrying out vacuum drying at 110 ℃ for 4h at 100 ℃ and 110 ℃, then transferring the precipitate into a heating furnace, and carrying out heat preservation at 300 ℃, 500 ℃, 800 ℃ and 1000 ℃ respectively at the heating rate of 10 ℃/min for 1h to prepare a product A;
step S2, uniformly mixing silicon carbide powder, white corundum powder, a product A and kaolin powder to obtain mixed powder, adding silica sol into the mixed powder, uniformly mixing, adding deionized water to adjust the solid-liquid ratio to be 60%, then dropwise adding a sodium hydroxide solution with the concentration of 1mol/L to adjust the pH until the pH is =10-10.5, standing for 2h, transferring the mixture into a planetary ball mill, ball-milling for 60min at the rotating speed of 350 plus 400r/min at the ball-material ratio of 3: 1, and dropwise adding n-butyl alcohol to defoam to obtain mixed slurry;
step S3, soaking polyurethane foam in 15% sodium hydroxide aqueous solution by mass, heating in a water bath at 45-60 ℃, magnetically stirring, filtering, washing with deionized water, adding into 35% silica sol by mass, drying at 50 ℃ for 4h, taking out, adding into the mixed slurry prepared in step S2, extruding, drying to prepare a preform, sintering to prepare the porous filler, and controlling the weight ratio of the polyurethane foam to the sodium hydroxide aqueous solution to the silica sol to be 1: 10: 3: 5.
3. The solvent-free environment-friendly SPUA material of claim 2 wherein in step S1 the molar ratio of ceric sulfate to sodium hydrogen phosphate is controlled to 1: 1, in step S2 the weight ratio of silicon carbide powder, white corundum powder, product A and kaolin powder is controlled to 6.5: 2: 1: 0.5, the amount of silica sol is 10% of the weight of the powder mixture, and the amount of n-butanol is 1% of the weight of the powder mixture.
4. The solvent-free environment-friendly SPUA material as claimed in claim 1, wherein the antistatic auxiliary is prepared by the following method:
step S11, adding dodecyl primary amine and absolute ethyl alcohol into a three-neck flask, heating in a water bath at 45-60 ℃, magnetically stirring at a rotating speed of 100r/min for 30-45min, adding ethylene oxide, continuously stirring for 10min, adding dilute hydrochloric acid with the mass fraction of 10%, heating to 75 ℃, magnetically stirring for 3h, transferring to a vacuum drying oven, drying until the solvent is completely evaporated to obtain an intermediate 1, and controlling the weight ratio of the dodecyl primary amine to the ethylene oxide to the dilute hydrochloric acid to be 1: 2: 0.3-0.5;
step S12, adding the intermediate 1, the toluene and the boric acid obtained in the step S11 into a three-neck flask, magnetically stirring and heating to 110 ℃, introducing nitrogen to discharge air, adding the boric acid into the toluene, magnetically stirring for 10min, then dripping into the three-neck flask, controlling the dripping time to be 55-60min, then carrying out reduced pressure distillation until the toluene is evaporated out, obtaining the antistatic auxiliary agent, controlling the weight ratio of the intermediate 1, the toluene and the boric acid to be 1: 3-5: 1,
the weight ratio of the added toluene in two times is 1: 1, and the weight ratio of the added boric acid in two times is 1: 3.
5. The method for preparing the solvent-free environment-friendly SPUA material according to claim 1, characterized in that it comprises the following steps:
firstly, mixing hexamethylene diisocyanate and polytetramethylene ether glycol uniformly to prepare a component A;
step two, uniformly mixing the amino-terminated polyether, the amino chain extender, the porous filler and the antistatic auxiliary agent to prepare a component B;
and step three, uniformly mixing the component A and the component B according to the weight ratio of 3: 5 to prepare the solvent-free environment-friendly SPUA material.
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