CN114654853A - Anti-aging elastomer modified asphalt waterproof coiled material - Google Patents
Anti-aging elastomer modified asphalt waterproof coiled material Download PDFInfo
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- CN114654853A CN114654853A CN202210351497.6A CN202210351497A CN114654853A CN 114654853 A CN114654853 A CN 114654853A CN 202210351497 A CN202210351497 A CN 202210351497A CN 114654853 A CN114654853 A CN 114654853A
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- modified asphalt
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- graphene oxide
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- 239000010426 asphalt Substances 0.000 title claims abstract description 125
- 239000000463 material Substances 0.000 title claims abstract description 43
- 229920001971 elastomer Polymers 0.000 title claims abstract description 24
- 239000000806 elastomer Substances 0.000 title claims abstract description 24
- 230000003712 anti-aging effect Effects 0.000 title claims abstract description 23
- -1 polyethylene terephthalate Polymers 0.000 claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims abstract description 37
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 24
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims abstract description 18
- 239000000945 filler Substances 0.000 claims abstract description 13
- 229920000139 polyethylene terephthalate Polymers 0.000 claims abstract description 11
- 229960005070 ascorbic acid Drugs 0.000 claims abstract description 9
- 235000010323 ascorbic acid Nutrition 0.000 claims abstract description 9
- 239000011668 ascorbic acid Substances 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 51
- 238000003756 stirring Methods 0.000 claims description 35
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 claims description 34
- YIXJRHPUWRPCBB-UHFFFAOYSA-N magnesium nitrate Chemical compound [Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O YIXJRHPUWRPCBB-UHFFFAOYSA-N 0.000 claims description 28
- 238000010438 heat treatment Methods 0.000 claims description 25
- 239000000243 solution Substances 0.000 claims description 23
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 21
- 238000001816 cooling Methods 0.000 claims description 20
- 238000001035 drying Methods 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 18
- 239000002585 base Substances 0.000 claims description 17
- 239000008367 deionised water Substances 0.000 claims description 15
- 229910021641 deionized water Inorganic materials 0.000 claims description 15
- 238000005406 washing Methods 0.000 claims description 15
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 claims description 14
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 14
- 238000007598 dipping method Methods 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 12
- RSKGMYDENCAJEN-UHFFFAOYSA-N hexadecyl(trimethoxy)silane Chemical compound CCCCCCCCCCCCCCCC[Si](OC)(OC)OC RSKGMYDENCAJEN-UHFFFAOYSA-N 0.000 claims description 11
- 239000003513 alkali Substances 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 10
- 239000012266 salt solution Substances 0.000 claims description 10
- 238000005303 weighing Methods 0.000 claims description 10
- REYJJPSVUYRZGE-UHFFFAOYSA-N Octadecylamine Chemical compound CCCCCCCCCCCCCCCCCCN REYJJPSVUYRZGE-UHFFFAOYSA-N 0.000 claims description 9
- 239000002135 nanosheet Substances 0.000 claims description 9
- 230000032683 aging Effects 0.000 claims description 8
- 238000000227 grinding Methods 0.000 claims description 8
- 229920002799 BoPET Polymers 0.000 claims description 5
- 238000004049 embossing Methods 0.000 claims description 5
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 claims description 5
- 239000012467 final product Substances 0.000 claims description 5
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 5
- 239000003921 oil Substances 0.000 claims description 5
- 239000010881 fly ash Substances 0.000 claims description 4
- 239000010705 motor oil Substances 0.000 claims description 4
- 238000005470 impregnation Methods 0.000 claims description 2
- 239000012528 membrane Substances 0.000 claims 2
- 238000002360 preparation method Methods 0.000 claims 1
- 238000004078 waterproofing Methods 0.000 claims 1
- 239000005020 polyethylene terephthalate Substances 0.000 abstract description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 3
- 125000001165 hydrophobic group Chemical group 0.000 abstract description 3
- 239000001301 oxygen Substances 0.000 abstract description 3
- 229910052760 oxygen Inorganic materials 0.000 abstract description 3
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 abstract description 3
- 230000009471 action Effects 0.000 abstract description 2
- 125000000524 functional group Chemical group 0.000 abstract description 2
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 description 31
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 229920000034 Plastomer Polymers 0.000 description 5
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- 238000007654 immersion Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B11/00—Layered products comprising a layer of bituminous or tarry substances
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B11/00—Layered products comprising a layer of bituminous or tarry substances
- B32B11/04—Layered products comprising a layer of bituminous or tarry substances comprising such bituminous or tarry substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B11/00—Layered products comprising a layer of bituminous or tarry substances
- B32B11/04—Layered products comprising a layer of bituminous or tarry substances comprising such bituminous or tarry substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B11/046—Layered products comprising a layer of bituminous or tarry substances comprising such bituminous or tarry substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- 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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D5/00—Roof covering by making use of flexible material, e.g. supplied in roll form
- E04D5/10—Roof covering by making use of flexible material, e.g. supplied in roll form by making use of compounded or laminated materials, e.g. metal foils or plastic films coated with bitumen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/51—Elastic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/726—Permeability to liquids, absorption
- B32B2307/7265—Non-permeable
-
- 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
- C08J2395/00—Bituminous materials, e.g. asphalt, tar or pitch
-
- 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
- C08J2453/00—Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2453/02—Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers of vinyl aromatic monomers and conjugated dienes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- 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
- C08K3/02—Elements
- C08K3/04—Carbon
- C08K3/042—Graphene or derivatives, e.g. graphene oxides
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- 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
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- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/26—Silicon- containing compounds
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- 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
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- 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
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
Abstract
The invention relates to an anti-aging elastomer modified asphalt waterproof coiled material, which belongs to the technical field of waterproof coiled materials and comprises a base, a modified asphalt layer and a PET (polyethylene terephthalate) film, wherein the modified asphalt layer comprises the following raw materials: modified asphalt, modified zinc-magnesium-aluminum layered double hydroxide and filler. In the technical scheme of the invention, the graphene oxide is wrapped by the hydrophobic group on the octadecyl group, the lipophilicity of the graphene oxide is increased, the graphene oxide is reduced by adding the ascorbic acid, the hydrophilic oxygen-containing functional group on the surface of the graphene oxide is removed, the compatibility of the graphene oxide with asphalt and SBS is improved, in addition, the asphalt and SBS are well compatible through the action of octadecyl amine-graphene oxide, and the stability of the SBS/asphalt material is improved.
Description
Technical Field
The invention belongs to the technical field of waterproof coiled materials, and particularly relates to an anti-aging elastomer modified asphalt waterproof coiled material.
Background
The building waterproof material is an important building material, and the asphalt-based waterproof material is widely used due to excellent waterproof performance and low price, and the consumption of the asphalt-based waterproof material accounts for more than 70 percent of the total amount of the waterproof material at present. The property of the asphalt-based waterproof material is mainly determined by the asphalt coating material, and the plastomer modified asphalt coating material can well adapt to the deformation of a base layer due to the fact that the plastomer modified asphalt coating material does not flow at high temperature and does not crack at low temperature, and becomes one of the most important asphalt coating materials. However, the roof waterproof engineering is affected by natural environmental factors such as ultraviolet light, heat, oxygen and the like, the plastomer modified asphalt coating material is easy to age, so that the low-temperature flexibility of the plastic modified asphalt coating material is obviously reduced, the capability of the waterproof coiled material adapting to the cold shrinkage deformation of a roof base layer at low temperature in winter is reduced, the waterproof layer is cracked and damaged, the roof leakage is caused, and the service life of the roof waterproof layer is greatly shortened. Therefore, the aging resistance of the plastomer modified asphalt coating material is improved, and the plastomer modified asphalt coating material has important significance for improving the durability of the waterproof layer of the building roof.
Polymer modified asphalt has been selected as one of the best choices to improve the aging resistance and physical properties of asphalt. Styrene-butadiene-styrene block copolymers (SBS) are mainly used as modifiers for polymer modified asphalt. It is well known that the use of SBS can improve the physical, mechanical and rheological behaviour of conventional bitumen. Physically crosslinking molecules into a three-dimensional network; SBS copolymers exhibit good properties in terms of strength and elasticity. However, SBS modified asphalt has problems of high cost, poor aging resistance and the like. In addition, problems such as insufficient storage stability and the like often occur due to poor compatibility of the asphalt with SBS.
Disclosure of Invention
The invention aims to provide an anti-aging elastomer modified asphalt waterproof coiled material, which increases the compatibility of SBS and asphalt and improves the anti-aging performance of SBS modified asphalt by modifying asphalt, and further improves the anti-aging performance of SBS modified asphalt by modifying zinc-magnesium-aluminum layered double hydroxide by hexadecyl trimethoxy silane.
The technical problems to be solved by the invention are as follows: SBS modified asphalt has the problems of high cost, poor aging resistance and the like; in addition, problems such as insufficient storage stability and the like often occur due to the difference in compatibility between the asphalt and SBS.
The purpose of the invention can be realized by the following technical scheme:
the anti-aging elastomer modified asphalt waterproof coiled material comprises a base, a modified asphalt layer and a PET (polyethylene terephthalate) film, wherein the modified asphalt layer comprises the following raw materials in parts by mass: 66-80 parts of modified asphalt, 1-6 parts of modified zinc-magnesium-aluminum layered double hydroxide and 20-35 parts of filler;
the modified asphalt is prepared by the following steps:
s1, injecting the dried asphalt into a shear mixer, adding SBS, stirring for 60min at 170 ℃, and keeping the temperature for 1.5h to obtain SBS modified asphalt, wherein the mass ratio of the asphalt to the SBS is 300-500: 10-20 parts of;
s2, dispersing graphene oxide nanosheets in ethanol under an ultrasonic state, adding octadecylamine, heating at 78 ℃ for 20h, adding ascorbic acid, heating at 60 ℃ for 22h, cooling to room temperature, filtering, washing and drying to obtain octadecylamine-modified graphene oxide, wherein the mass ratio of the graphene oxide nanosheets, the ethanol, the octadecylamine and the ascorbic acid is 0.5-1.5: 100-200: 1-2: 9-11;
s3, stirring and mixing the SBS modified asphalt and the octadecylamine modified graphene oxide to obtain modified asphalt, wherein the mass ratio of the SBS modified asphalt to the octadecylamine modified graphene oxide is 1: 0.0004-0.0008.
Further, the modified zinc-magnesium-aluminum layered double hydroxide is prepared by the following steps:
a1, weighing zinc nitrate, magnesium nitrate and aluminum nitrate, dissolving the zinc nitrate, the magnesium nitrate and the aluminum nitrate in deionized water with the mass of 20-30 times of the mass of the zinc nitrate, the magnesium nitrate and the aluminum nitrate, mixing and stirring to obtain a mixed salt solution, weighing sodium hydroxide and anhydrous sodium carbonate, dissolving the sodium hydroxide and the anhydrous sodium carbonate in deionized water with the mass of 20-30 times of the mass of the sodium hydroxide and the anhydrous sodium carbonate, mixing and stirring to obtain a mixed alkali solution, wherein the mass ratio of the zinc nitrate to the magnesium nitrate to the aluminum nitrate is 2-3: 2-2.5: 2.1-2.3, wherein the mass ratio of the sodium hydroxide to the anhydrous sodium carbonate is 4-6: 1-3;
a2, adding the mixed alkali solution into the mixed salt solution, rapidly stirring to control the pH value to be 9-11, continuously and violently stirring for 1h, crystallizing for 24h in 70 ℃ water bath, then centrifugally washing with deionized water, drying for 24h at 75 ℃ and grinding to obtain zinc-magnesium-aluminum layered double hydroxide;
a3, dispersing zinc-magnesium-aluminum layered double hydroxide into 90% by volume of ethanol aqueous solution, adding hexadecyl trimethoxy silane, rapidly stirring at 50 ℃ in nitrogen atmosphere, adding acetic acid to adjust the pH value to 4, and then filtering, washing and drying to obtain the modified zinc-magnesium-aluminum layered double hydroxide, wherein the dosage ratio of the zinc-magnesium-aluminum layered double hydroxide, the ethanol aqueous solution, the hexadecyl trimethoxy silane to the acetic acid is 4-6 g: 40-50 mL: 0.14-0.21 g: 10-20 mL.
Furthermore, the filler is fly ash, and the fineness of the fly ash is 150-250 meshes.
Further, the anti-aging elastomer modified asphalt waterproof coiled material is prepared by the following steps:
s1, heating the modified asphalt to 155-165 ℃, adding engine oil, heating to 175-185 ℃, adding the modified zinc-magnesium-aluminum layered double hydroxide, heating to 200-210 ℃, adding the filler, and cooling to 170-180 ℃ to obtain a pre-impregnation solution;
s2, uncoiling the base, drying, pre-soaking in pre-soaking solution, soaking in oil to form modified asphalt layers on two sides of the base, respectively attaching PET films on the two modified asphalt layers, cooling, embossing, and cooling again to obtain the final product
The invention has the beneficial effects that:
(1) in the technical scheme of the invention, zinc-magnesium-aluminum Layered Double Hydroxide (LDH) is a supermolecular layered structure material, has double functions of physical shielding and absorption on ultraviolet rays, can obviously reduce the increase of softening point and the reduction of low-temperature flexibility of SBS modified asphalt in the ultraviolet light and thermal oxidation aging processes, and effectively improves the light-heat aging resistance of elastomer modified asphalt, so that the service life of the elastomer modified asphalt waterproof material can be prolonged, the surface of LDH contains hydroxyl, the existence of the hydroxyl can cause the agglomeration among LDH particles, thereby influencing the dispersion of the LDH particles in the asphalt, however, through adding silane coupling agent hexadecyl trimethoxy silane, the hydrolysis of hexadecyl trimethoxy silane can generate silicon hydroxyl, thereby reacting with the surface hydroxyl of LDH, reducing the surface hydroxyl of LDH, and being beneficial to reducing the agglomeration among LDH particles, the dispersion of the LDH in asphalt is enhanced, and on the other hand, after the hexadecyl trimethoxy silane is grafted to the LDH, the stability of the LDH in hydrophobic asphalt is improved due to alkyl hydrophobic groups on the surface.
(2) In the technical scheme of the invention, amino on octadecylamine in modified asphalt reacts with carboxyl on graphene oxide nanosheets to generate amido bonds, and since graphene oxide has multiple layers of sheets and each sheet contains multiple carboxyl, the same graphene oxide nanosheets can react with multiple octadecylamine molecules to form an octadecylamine-graphene oxide composite material similar to algae, hydrophobic groups on the octadecyl groups wrap the graphene oxide, the lipophilicity of the graphene oxide is increased, the reduction of the graphene oxide is realized by adding ascorbic acid, hydrophilic oxygen-containing functional groups on the surface of the graphene oxide are removed, the compatibility of the graphene oxide with asphalt and SBS is improved, in addition, good compatibility is realized between the asphalt and SBS through the action of the octadecylamine-graphene oxide, the stability of the SBS/asphalt material is improved.
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
The modified asphalt is prepared by the following steps:
s1, injecting dried 300g of asphalt into a shear mixer, adding 10g of SBS, stirring for 60min at 170 ℃, and keeping the temperature for 1.5h to obtain SBS modified asphalt;
s2, dispersing 0.5g of graphene oxide nanosheets in 100g of ethanol under an ultrasonic condition, adding 1g of octadecylamine, heating at 78 ℃ for 20h, adding 9g of ascorbic acid, heating at 60 ℃ for 22h, cooling to room temperature, filtering, washing and drying to obtain octadecylamine-modified graphene oxide;
s3, stirring and mixing 1g of SBS modified asphalt and 0.0004g of octadecylamine modified graphene oxide to obtain the modified asphalt.
Example 2
The modified asphalt comprises the following steps:
s1, injecting dried 400g of asphalt into a shear mixer, adding 15g of SBS, stirring for 60min at 170 ℃, and keeping the temperature for 1.5h to obtain SBS modified asphalt;
s2, dispersing 1g of graphene oxide nanosheets in 150g of ethanol under an ultrasonic state, adding 1.5g of octadecylamine, heating at 78 ℃ for 20h, adding 10g of ascorbic acid, heating at 60 ℃ for 22h, cooling to room temperature, filtering, washing and drying to obtain octadecylamine-modified graphene oxide;
s3, stirring and mixing 1g of SBS modified asphalt and 0.0006g of octadecylamine modified graphene oxide to obtain the modified asphalt.
Example 3
The modified asphalt is prepared by the following steps:
s1, injecting 500g of dried asphalt into a shear mixer, adding 20g of SBS, stirring for 60min at 170 ℃, and keeping the temperature for 1.5h to obtain SBS modified asphalt;
s2, dispersing 1.5g of graphene oxide nanosheets in 200g of ethanol under an ultrasonic condition, adding 2g of octadecylamine, heating at 78 ℃ for 20h, adding 11g of ascorbic acid, heating at 60 ℃ for 22h, cooling to room temperature, filtering, washing and drying to obtain octadecylamine-modified graphene oxide;
s3, stirring and mixing 1g of SBS modified asphalt and 0.0008g of octadecylamine modified graphene oxide to obtain the modified asphalt.
Example 4
The modified zinc-magnesium-aluminum layered double hydroxide is prepared by the following steps:
a1, weighing 2g of zinc nitrate, 2g of magnesium nitrate and 2.1g of aluminum nitrate, dissolving the zinc nitrate, the magnesium nitrate and the aluminum nitrate in deionized water with the mass of 20 times of the zinc nitrate, mixing and stirring to obtain a mixed salt solution, weighing 4g of sodium hydroxide and 1g of anhydrous sodium carbonate, dissolving the sodium hydroxide and the anhydrous sodium carbonate in deionized water with the mass of 20 times of the sodium hydroxide and stirring to obtain a mixed alkali solution;
a2, adding the mixed alkali solution into the mixed salt solution, rapidly stirring to control the pH value at 9, continuously and violently stirring for 1h, crystallizing for 24h in 70 ℃ water bath, then centrifugally washing with deionized water, drying for 24h at 75 ℃ and grinding to obtain zinc-magnesium-aluminum layered double hydroxide;
a3, dispersing 4g of zinc-magnesium-aluminum layered double hydroxide in 40mL of ethanol water solution with volume fraction of 90%, adding 0.14g of hexadecyl trimethoxy silane, rapidly stirring at 50 ℃ in nitrogen atmosphere, adding 10mL of acetic acid to adjust the pH to 4, and then filtering, washing, drying and grinding to obtain the modified zinc-magnesium-aluminum layered double hydroxide.
Example 5
The modified zinc-magnesium-aluminum layered double hydroxide is prepared by the following steps:
a1, weighing 2.5g of zinc nitrate, 2.2g of magnesium nitrate and 2.2g of aluminum nitrate, dissolving the zinc nitrate, the magnesium nitrate and the aluminum nitrate in deionized water with the mass 25 times of the zinc nitrate, mixing and stirring to obtain a mixed salt solution, weighing 5g of sodium hydroxide and 2g of anhydrous sodium carbonate, dissolving the sodium hydroxide and the anhydrous sodium carbonate in deionized water with the mass 25 times of the sodium hydroxide and stirring to obtain a mixed alkali solution;
a2, adding the mixed alkali solution into the mixed salt solution, rapidly stirring to control the pH value to be 10, continuously and violently stirring for 1h, crystallizing for 24h in a 70 ℃ water bath, then centrifugally washing with deionized water, drying for 24h at 75 ℃ and grinding to obtain zinc-magnesium-aluminum layered double hydroxide;
a3, dispersing 5g of zinc-magnesium-aluminum layered double hydroxide in 45mL of ethanol water solution with volume fraction of 90%, adding 0.18g of hexadecyl trimethoxy silane, rapidly stirring at 50 ℃ in nitrogen atmosphere, adding 15mL of acetic acid to adjust the pH to 4, filtering, washing, drying and grinding to obtain the modified zinc-magnesium-aluminum layered double hydroxide.
Example 6
The modified zinc-magnesium-aluminum layered double hydroxide is prepared by the following steps:
a1, weighing 3g of zinc nitrate, 2.5g of magnesium nitrate and 2.3g of aluminum nitrate, dissolving the zinc nitrate, the magnesium nitrate and the aluminum nitrate in deionized water with the mass 30 times of the weight of the zinc nitrate, mixing and stirring to obtain a mixed salt solution, weighing 6g of sodium hydroxide and 3g of anhydrous sodium carbonate, dissolving the sodium hydroxide and the anhydrous sodium carbonate in deionized water with the mass 25 times of the sodium hydroxide and stirring to obtain a mixed alkali solution;
a2, adding the mixed alkali solution into the mixed salt solution, rapidly stirring to control the pH value to be 11, continuously and violently stirring for 1h, crystallizing for 24h in 70 ℃ water bath, then centrifugally washing with deionized water, drying for 24h at 75 ℃ and grinding to obtain zinc-magnesium-aluminum layered double hydroxide;
a3, dispersing 6g of zinc-magnesium-aluminum layered double hydroxide in 50mL of ethanol water solution with the volume fraction of 90%, adding 0.21g of hexadecyl trimethoxy silane, rapidly stirring at 50 ℃ in nitrogen atmosphere, adding 20mL of acetic acid to adjust the pH to 4, and then filtering, washing, drying and grinding to obtain the modified zinc-magnesium-aluminum layered double hydroxide.
Example 7
The anti-aging elastomer modified asphalt waterproof coiled material comprises a base, a modified asphalt layer and a PET (polyethylene terephthalate) film, wherein the modified asphalt layer comprises the following raw materials in parts by mass: 66 parts of modified asphalt, 1 part of modified zinc-magnesium-aluminum layered double hydroxide and 20 parts of filler;
the anti-aging elastomer modified asphalt waterproof coiled material is prepared by the following steps:
s1, heating the modified asphalt to 155 ℃, adding engine oil, heating to 175 ℃, adding the modified zinc-magnesium-aluminum layered double hydroxide, heating to 200 ℃, adding the filler, and cooling to 170 ℃ to obtain a pre-immersion liquid;
s2, uncoiling the base, drying, pre-dipping in the pre-dipping solution, dipping in oil, forming modified asphalt layers on the two sides of the base, respectively attaching PET films on the two modified asphalt layers, cooling, embossing, and cooling again to obtain the final product.
Example 8
The anti-aging elastomer modified asphalt waterproof coiled material comprises a base, a modified asphalt layer and a PET (polyethylene terephthalate) film, wherein the modified asphalt layer comprises the following raw materials in parts by mass: 73 parts of modified asphalt, 3 parts of modified zinc-magnesium-aluminum layered double hydroxide and 27 parts of filler;
the anti-aging elastomer modified asphalt waterproof coiled material is prepared by the following steps:
s1, heating the modified asphalt to 160 ℃, adding engine oil, heating to 180 ℃, adding the modified zinc-magnesium-aluminum layered double hydroxide, heating to 205 ℃, adding the filler, and cooling to 175 ℃ to obtain a pre-immersion liquid;
s2, uncoiling the base, drying, pre-dipping in the pre-dipping solution, dipping in oil, forming modified asphalt layers on the two sides of the base, respectively attaching PET films on the two modified asphalt layers, cooling, embossing, and cooling again to obtain the final product.
Example 9
The anti-aging elastomer modified asphalt waterproof coiled material comprises a base, a modified asphalt layer and a PET (polyethylene terephthalate) film, wherein the modified asphalt layer comprises the following raw materials in parts by mass: 80 parts of modified asphalt, 6 parts of modified zinc-magnesium-aluminum layered double hydroxide and 35 parts of filler;
the anti-aging elastomer modified asphalt waterproof coiled material is prepared by the following steps:
s1, heating the modified asphalt to 165 ℃, adding machine oil, heating to 185 ℃, adding the modified zinc-magnesium-aluminum layered double hydroxide, heating to 210 ℃, adding the filler, and cooling to 180 ℃ to obtain a pre-immersion liquid;
s2, uncoiling the base, drying, pre-dipping in the pre-dipping solution, dipping in oil, forming modified asphalt layers on the two sides of the base, respectively attaching PET films on the two modified asphalt layers, cooling, embossing, and cooling again to obtain the final product.
Comparative example 1
This comparative example differs from example 7 in that the modified asphalt prepared in example 1 was changed to SBS/asphalt and the other steps and raw materials were the same as in example 7.
Comparative example 2
The comparative example is different from example 8 in that the modified asphalt prepared in example 1 is changed into graphene oxide/SBS/asphalt, and other steps and raw materials are the same as those of example 8.
Comparative example 3
The comparative example is different from example 9 in that the modified zinc-magnesium-aluminum layered double hydroxide prepared in example 5 is changed into zinc-magnesium-aluminum layered double hydroxide, and other steps and raw materials are the same as those of example 9.
Now, the performance test of the waterproof rolls prepared in examples 7 to 9 and comparative examples 1 to 3 is performed according to the execution standard of asphalt composite tire flexible waterproof rolls, JC/T690-2008, and the test results are shown in the following table 1:
TABLE 1
As can be seen from table 1 above, the waterproof roll prepared in the examples of the present invention has better aging resistance than the comparative examples.
In the description of the specification, reference to the description of "one embodiment," "an example," "a specific example" or the like means 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 (9)
1. The utility model provides an ageing resistance elastomer modified asphalt waterproofing membrane, includes child base, modified asphalt layer and PET membrane, its characterized in that: the modified asphalt layer comprises the following raw materials in parts by mass: 66-80 parts of modified asphalt, 1-6 parts of modified zinc-magnesium-aluminum layered double hydroxide and 20-35 parts of filler;
the modified asphalt is prepared by the following steps:
s1, injecting the dried asphalt into a shear mixer, adding SBS, stirring for 60min at 170 ℃, and keeping the temperature for 1.5h to obtain SBS modified asphalt;
s2, dispersing graphene oxide nanosheets in ethanol under an ultrasonic state, adding octadecylamine, heating at 78 ℃ for 20h, adding ascorbic acid, heating at 60 ℃ for 22h, cooling to room temperature, filtering, washing and drying to obtain octadecylamine-modified graphene oxide;
and S3, stirring and mixing the SBS modified asphalt and the octadecylamine modified graphene oxide to obtain the modified asphalt.
2. The anti-aging elastomer modified asphalt waterproof coiled material as claimed in claim 1, characterized in that: in step S1, the mass ratio of the asphalt to the SBS is 300-500: 10-20.
3. The anti-aging elastomer modified asphalt waterproof coiled material as claimed in claim 1, characterized in that: in step S2, the mass ratio of graphene oxide nanosheets, ethanol, octadecylamine and ascorbic acid is 0.5-1.5: 100-200: 1-2:9-11.
4. The anti-aging elastomer modified asphalt waterproof coiled material as claimed in claim 1, characterized in that: in step S3, the mass ratio of SBS-modified asphalt to octadecylamine-modified graphene oxide is 1: 0.0004-0.0008.
5. The anti-aging elastomer modified asphalt waterproof coiled material as claimed in claim 1, characterized in that: the modified zinc-magnesium-aluminum layered double hydroxide is prepared by the following steps:
a1, weighing zinc nitrate, magnesium nitrate and aluminum nitrate, dissolving the zinc nitrate, the magnesium nitrate and the aluminum nitrate in deionized water with the mass 20-30 times of the mass of the zinc nitrate, the magnesium nitrate and the aluminum nitrate, mixing and stirring to obtain a mixed salt solution, weighing sodium hydroxide and anhydrous sodium carbonate, dissolving the sodium hydroxide and the anhydrous sodium carbonate in deionized water with the mass 20-30 times of the mass of the sodium hydroxide and the anhydrous sodium carbonate, mixing and stirring to obtain a mixed alkali solution;
a2, adding the mixed alkali solution into the mixed salt solution, rapidly stirring to control the pH value to be 9-11, continuously and violently stirring for 1h, crystallizing for 24h in 70 ℃ water bath, then centrifugally washing with deionized water, drying for 24h at 75 ℃ and grinding to obtain zinc-magnesium-aluminum layered double hydroxide;
a3, dispersing zinc-magnesium-aluminum layered double hydroxide in 90% ethanol water solution, adding hexadecyl trimethoxy silane, rapidly stirring at 50 ℃ in nitrogen atmosphere, adding acetic acid to adjust the pH value to 4, and then filtering, washing and drying to obtain the modified zinc-magnesium-aluminum layered double hydroxide.
6. The anti-aging elastomer modified asphalt waterproof coiled material as claimed in claim 5, wherein: in the step A1, the mass ratio of zinc nitrate to magnesium nitrate to aluminum nitrate is 2-3: 2-2.5: 2.1-2.3, and the mass ratio of the sodium hydroxide to the anhydrous sodium carbonate is 4-6: 1-3.
7. The anti-aging elastomer modified asphalt waterproof coiled material as claimed in claim 5, wherein: in the step A3, the dosage ratio of the zinc-magnesium-aluminum layered double hydroxide, the ethanol water solution, the hexadecyl trimethoxy silane and the acetic acid is 4-6 g: 40-50 mL: 0.14-0.21 g: 10-20 mL.
8. The anti-aging elastomer modified asphalt waterproof coiled material as claimed in claim 1, characterized in that: the filler is fly ash, and the fineness of the fly ash is 150-250 meshes.
9. The anti-aging elastomer modified asphalt waterproof coiled material as claimed in claim 1, characterized in that: the preparation method comprises the following steps:
s1, heating the modified asphalt to 155-165 ℃, adding engine oil, heating to 175-185 ℃, adding the modified zinc-magnesium-aluminum layered double hydroxide, heating to 200-210 ℃, adding the filler, and cooling to 170-180 ℃ to obtain a pre-impregnation solution;
s2, uncoiling the base, drying, pre-dipping in the pre-dipping solution, dipping in oil, forming modified asphalt layers on the two sides of the base, respectively attaching PET films on the two modified asphalt layers, cooling, embossing, and cooling again to obtain the final product.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116285589A (en) * | 2023-04-20 | 2023-06-23 | 安徽富瑞雪化工科技股份有限公司 | Building coating with corrosion resistance and preparation method thereof |
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