CN116515353A - High-temperature-resistant high-strength pressure pipeline and production process thereof - Google Patents
High-temperature-resistant high-strength pressure pipeline and production process thereof Download PDFInfo
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- CN116515353A CN116515353A CN202310510530.XA CN202310510530A CN116515353A CN 116515353 A CN116515353 A CN 116515353A CN 202310510530 A CN202310510530 A CN 202310510530A CN 116515353 A CN116515353 A CN 116515353A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 95
- 239000011248 coating agent Substances 0.000 claims abstract description 81
- 238000000576 coating method Methods 0.000 claims abstract description 81
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 24
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 24
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 21
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 21
- -1 siloxane modified graphene Chemical class 0.000 claims abstract description 21
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 8
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 8
- 239000011159 matrix material Substances 0.000 claims abstract description 5
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 44
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 36
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 36
- 229910021389 graphene Inorganic materials 0.000 claims description 35
- 238000003756 stirring Methods 0.000 claims description 28
- 229920001661 Chitosan Polymers 0.000 claims description 23
- MPOIUZCYWIPYNC-UHFFFAOYSA-N (2-hydroxyphenyl)-(4-methoxyphenyl)methanone Chemical compound C1=CC(OC)=CC=C1C(=O)C1=CC=CC=C1O MPOIUZCYWIPYNC-UHFFFAOYSA-N 0.000 claims description 22
- 239000003607 modifier Substances 0.000 claims description 22
- 238000001035 drying Methods 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 12
- 239000003054 catalyst Substances 0.000 claims description 11
- 238000002360 preparation method Methods 0.000 claims description 11
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 10
- 239000006185 dispersion Substances 0.000 claims description 10
- 238000000227 grinding Methods 0.000 claims description 10
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 241001122767 Theaceae Species 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- 150000008442 polyphenolic compounds Chemical class 0.000 claims description 9
- 239000008367 deionised water Substances 0.000 claims description 8
- 229910021641 deionized water Inorganic materials 0.000 claims description 8
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical group CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 229960000583 acetic acid Drugs 0.000 claims description 5
- 238000001354 calcination Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000011049 filling Methods 0.000 claims description 5
- 239000012362 glacial acetic acid Substances 0.000 claims description 5
- 238000001291 vacuum drying Methods 0.000 claims description 5
- 230000035484 reaction time Effects 0.000 claims description 2
- SWFHGTMLYIBPPA-UHFFFAOYSA-N (4-methoxyphenyl)-phenylmethanone Chemical compound C1=CC(OC)=CC=C1C(=O)C1=CC=CC=C1 SWFHGTMLYIBPPA-UHFFFAOYSA-N 0.000 abstract description 7
- 230000000052 comparative effect Effects 0.000 description 23
- 230000032683 aging Effects 0.000 description 15
- 239000000377 silicon dioxide Substances 0.000 description 13
- 238000001816 cooling Methods 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 8
- 239000000843 powder Substances 0.000 description 8
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical group C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 6
- 238000007873 sieving Methods 0.000 description 6
- 230000003247 decreasing effect Effects 0.000 description 5
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- 238000012360 testing method Methods 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- 239000004342 Benzoyl peroxide Substances 0.000 description 3
- 235000019400 benzoyl peroxide Nutrition 0.000 description 3
- 238000010382 chemical cross-linking Methods 0.000 description 3
- 239000004205 dimethyl polysiloxane Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 3
- 238000001132 ultrasonic dispersion Methods 0.000 description 3
- WMBWREPUVVBILR-UHFFFAOYSA-N GCG Natural products C=1C(O)=C(O)C(O)=CC=1C1OC2=CC(O)=CC(O)=C2CC1OC(=O)C1=CC(O)=C(O)C(O)=C1 WMBWREPUVVBILR-UHFFFAOYSA-N 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 2
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- 230000005855 radiation Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
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- 238000004804 winding Methods 0.000 description 2
- WMBWREPUVVBILR-WIYYLYMNSA-N (-)-Epigallocatechin-3-o-gallate Chemical compound O([C@@H]1CC2=C(O)C=C(C=C2O[C@@H]1C=1C=C(O)C(O)=C(O)C=1)O)C(=O)C1=CC(O)=C(O)C(O)=C1 WMBWREPUVVBILR-WIYYLYMNSA-N 0.000 description 1
- 239000005639 Lauric acid Substances 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/32—Radiation-absorbing paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/48—Stabilisers against degradation by oxygen, light or heat
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
Abstract
The application relates to a high-temperature-resistant high-strength pressure pipeline and a production process thereof, and relates to the field of pressure pipelines, wherein the high-temperature-resistant high-strength pressure pipeline comprises a pipeline body and an anti-ultraviolet coating, the anti-ultraviolet coating is obtained by coating the surface of the pipeline body with the anti-ultraviolet coating, and the anti-ultraviolet coating comprises the following components in parts by mass: 120-160 parts of modified hydrophobic acrylic resin matrix, 6-8 parts of siloxane modified graphene, 8-10 parts of silicon dioxide powder loaded with an anti-ultraviolet reagent, 20-27 parts of curing agent and 2-3 parts of leveling agent; the silicon dioxide powder loaded with the anti-ultraviolet reagent comprises 2-hydroxyl, 4' -methoxybenzophenone and nano silicon dioxide. According to the anti-ultraviolet coating for the pipeline, the anti-ultraviolet coating is coated on the outer wall of the pipeline body, and the anti-ultraviolet performance of the pipeline can be effectively improved.
Description
Technical Field
The application relates to the field of pressure pipelines, in particular to a high-temperature-resistant high-strength pressure pipeline and a production process thereof.
Background
A pressure conduit refers to all conduits that are subjected to internal or external pressure, and is a portion of a conduit that is used to convey, distribute, mix, separate, discharge, meter, control and stop fluid flow.
When the existing outdoor pressure pipeline is transported, the existing outdoor pressure pipeline is inevitably irradiated by the sun, the sunlight contains ultraviolet rays, after the sunlight is irradiated for a long time, the ultraviolet rays enable the plastic pressure pipeline to age quickly, various performance values are reduced, in the subsequent transportation process, the plastic pressure pipeline is cracked after aging, so that transported objects leak, and even the danger of pipeline fracture occurs, and the plastic pressure pipeline is to be improved.
Disclosure of Invention
In order to improve the ultraviolet aging resistance of the pipeline, the application provides a high-temperature-resistant high-strength pressure pipeline and a production process thereof.
The application provides a high-temperature-resistant high-strength pressure pipeline and a production process thereof, which adopts the following technical scheme:
in a first aspect, the application provides a high temperature resistant high strength pressure pipeline, adopts following technical scheme:
the high-temperature-resistant high-strength pressure pipeline comprises a pipeline body and an anti-ultraviolet coating, wherein the anti-ultraviolet coating is obtained by coating the surface of the pipeline body with the anti-ultraviolet coating, and the anti-ultraviolet coating comprises the following components in parts by weight:
120-160 parts of modified hydrophobic acrylic resin matrix
6-8 parts of siloxane modified graphene
8-10 parts of silicon dioxide powder loaded with anti-ultraviolet reagent
20-27 parts of curing agent
2-3 parts of leveling agent
The silicon dioxide powder loaded with the anti-ultraviolet reagent comprises 2-hydroxy, 4' -methoxybenzophenone and nano silicon dioxide.
By adopting the technical scheme, the pressure pipeline comprises a pipeline body and an anti-ultraviolet coating, wherein the anti-ultraviolet coating is obtained by coating the anti-ultraviolet coating on the outer wall of the pressure pipeline, the anti-ultraviolet coating is formed by taking modified hydrophobic acrylic resin as a machine body, and siloxane modified graphene is added, so that the mechanical property of the anti-ultraviolet coating can be improved; the ultraviolet-resistant agent-loaded silica powder is also added, and comprises 2-hydroxy, 4 '-methoxybenzophenone and nano silica, wherein the 2-hydroxy, 4' -methoxybenzophenone is an ultraviolet absorbent, has the advantages of high ultraviolet absorptivity, no toxicity and high stability, can effectively reduce the damage of ultraviolet rays to a resin coating, can improve the service life of a pipeline, and can further improve the mechanical property of an anti-ultraviolet coating by adding the nano silica.
Preferably, the silicon dioxide powder loaded with the anti-ultraviolet reagent is prepared by the following method:
mixing nano silicon dioxide, 2-hydroxy, 4' -methoxybenzophenone and a catalyst, stirring for reaction, then vacuum drying and grinding to obtain the silicon dioxide powder loaded with the anti-ultraviolet reagent.
Preferably, the reaction time is 8-9h, and the reaction temperature is 155-165 ℃.
Preferably, the catalyst is dibutyl tin laurate.
Through adopting above-mentioned technical scheme, make 2-hydroxy, 4' -methoxyl benzophenone load on nano silica's surface through lauric acid dibutyl, 2-hydroxy, 4' -methoxyl benzophenone is organic micromolecule, takes place the reaction with nano silica surface hydroxyl for nano silica surface active hydroxyl reduces, and hydrogen bonding effect weakens, can make nano silica disperse more evenly in the resin matrix, thereby has promoted the holistic stability of anti ultraviolet coating.
Preferably, the mass ratio of the nano silicon dioxide to the 2-hydroxy, 4' -methoxybenzophenone is 1:1.2-1.4.
By adopting the technical scheme, the mass ratio of the nano silicon dioxide to the 2-hydroxy, 4' -methoxybenzophenone is controlled within the range, so that the performance of the ultraviolet-resistant coating can be effectively improved.
Preferably, the siloxane-modified graphene comprises graphene oxide, polyvinyl alcohol and chitosan; the siloxane modified graphene is prepared by the following method:
adding polyvinyl alcohol into deionized water and stirring to obtain a polyvinyl alcohol solution; mixing graphene oxide with ionized water and stirring to obtain graphene oxide dispersion liquid; adding a modifier into glacial acetic acid solution, stirring to obtain a modifier solution, adding chitosan, the prepared polyvinyl alcohol solution and the prepared graphene oxide dispersion liquid into the modifier solution, stirring, drying and grinding to obtain the siloxane modified graphene.
By adopting the technical scheme, the graphene oxide has good mechanical properties, and after being added into the ultraviolet-resistant coating, the graphene oxide can form a complex winding structure with the nano silicon dioxide, so that the mechanical properties of the ultraviolet-resistant coating are greatly improved; after the polyvinyl alcohol is added, the film forming performance of the acrylic resin matrix can be further improved, and chemical crosslinking can be carried out between the polyvinyl alcohol and the acrylic resin, so that the phenomenon that 2-hydroxy, 4' -methoxybenzophenone migrates for a long time can be reduced, the stability and mechanical strength of the whole anti-ultraviolet coating are improved, and meanwhile, the polyvinyl alcohol is a high-temperature resistant material, and the high-temperature resistance of the whole system can be effectively improved; the chitosan has good heat stability and film forming performance, and meanwhile, si in the nano silicon dioxide 4+ Can form hydrogen bond with-OH group in chitosan, so that the whole anti-ultraviolet coating is more stable, and the mechanical property of the anti-ultraviolet coating is further improved.
Preferably, the modifier is tea polyphenol.
By adopting the technical scheme, the graphene oxide is modified by taking the tea polyphenol as the modifier, and the tea polyphenol contains EGCG, is a polyphenol compound, and can further absorb ultraviolet rays, so that the integral ultraviolet resistance of the ultraviolet resistant coating is improved.
Preferably, the mass ratio of the graphene oxide, the polyvinyl alcohol and the chitosan is 1 (0.26-0.3) to 0.1.
By adopting the technical scheme, the mass ratio among the graphene oxide, the polyvinyl alcohol and the chitosan is controlled within the range, so that the performance of the ultraviolet-resistant coating can be effectively improved.
In a second aspect, the present application provides a production process applied to a high-temperature-resistant and high-strength pressure pipeline, which adopts the following technical scheme:
the production process applied to the high-temperature-resistant high-strength pressure pipeline comprises the following steps of:
preparing a pipeline: filling a pipeline preparation material in a pipeline mould, calcining, and curing the calcined pipeline to obtain a pipeline body;
and (3) coating a pipeline coating: and (3) coating the ultraviolet-resistant coating on the surface of the cured pipeline, maintaining the relative humidity at 85% in the environment of 10-30 ℃, and drying for more than 36 hours to obtain the high-temperature-resistant high-strength pressure pipeline.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the method comprises the steps that a layer of anti-ultraviolet coating is coated on the outer wall of a pipeline body to form an anti-ultraviolet coating coated on the outer wall of the pipeline body, the anti-ultraviolet coating comprises silicon dioxide powder loaded with an anti-ultraviolet reagent, and 2-hydroxy, 4' -methoxybenzophenone is an ultraviolet absorbent and can effectively absorb ultraviolet light, so that the damage of the ultraviolet light to the coating body is reduced, the service life of the anti-ultraviolet coating is prolonged, and the anti-ultraviolet coating and nano silicon dioxide can jointly improve the mechanical property of the anti-ultraviolet coating;
2. the graphene oxide, the polyvinyl alcohol and the chitosan in the siloxane modified graphene can cooperatively improve the mechanical property and the high temperature resistance of the ultraviolet-resistant coating, and the siloxane modified graphene takes tea polyphenol as a modifier for addition, so that the ultraviolet-resistant performance can be achieved.
Detailed Description
The embodiment of the application discloses a high-temperature-resistant high-strength pressure pipeline and a production process thereof, and the application is further described in detail by combining the embodiments:
wherein, 2-hydroxy, 4' -methoxybenzophenone (CAS number 131-57-7) is purchased from Sigma Aldrich trade company, shanghai, product number H36206; nano silicon dioxide is purchased from Shanghai Ala Biochemical technology Co., ltd, and the product number is S104596; dibutyl tin laurate (CAS No. 77-58-7) was purchased from guangdong cloud biotechnology limited; tea polyphenols (CAS number 84650-60-2) were purchased from Shandong Asia Biotech Co.
Example 1
Preparing silicon dioxide powder loaded with an anti-ultraviolet reagent:
mixing 6.25g of nano silicon dioxide and 8.75g of 2-hydroxy, 4' -methoxybenzophenone, adding 3g of catalyst, heating to 155 ℃, stirring and reacting for 8 hours, vacuum drying, grinding, and sieving with a 200-mesh sieve to obtain the silicon dioxide powder loaded with the anti-ultraviolet reagent; wherein the catalyst is dibutyl tin laurate.
Preparation of siloxane-modified graphene:
adding 3.82g of polyvinyl alcohol into 200mL of deionized water, stirring for 20min at 25 ℃, heating to 80 ℃ and continuously stirring for 70min, and then cooling to 25 ℃ to obtain a polyvinyl alcohol solution; adding 14.71g of graphene oxide into 500mL of deionized water, performing ultrasonic dispersion at a temperature of 50 ℃ and a rotating speed of 2000rps for 6min, and then cooling to 25 ℃ to obtain graphene oxide dispersion liquid; adding 0.3g of modifier into 2% by mass of 50mL glacial acetic acid solution, stirring for 30min to obtain modifier solution, adding 1.47g of chitosan powder into the modifier solution, stirring for 15min, adding the prepared polyvinyl alcohol solution and the prepared graphene oxide dispersion liquid, drying for 24h in a drying oven at 35 ℃ at a rotating speed of 1500rps, and sieving with a 200-mesh sieve after grinding to obtain siloxane modified graphene; the modifier is tea polyphenols.
Preparing an anti-ultraviolet coating:
mixing 8g of modified silicon dioxide powder loaded with an anti-ultraviolet reagent, 6g of siloxane modified graphene, 2g of flatting agent and 20g of curing agent, heating to 75 ℃, stirring at a rotating speed of 300rps for 120min, and then cooling to 40 ℃ to obtain the anti-ultraviolet coating; wherein the leveling agent is polydimethylsiloxane (CAS number is 9016-00-6), and the curing agent is benzoyl peroxide (CAS number is 94-36-0).
Preparing a pressure pipeline:
preparing a pipeline: filling a pipeline preparation material in a pipeline mould, calcining at a high temperature, and curing the calcined pipeline to obtain a pipeline body;
and (3) coating a pipeline coating: and (3) coating the ultraviolet-resistant coating on the surface of the cured pipeline, maintaining the relative humidity at 85% in the environment of 10 ℃, and drying for 36 hours to obtain the high-temperature-resistant high-strength pressure pipeline.
Example 2
Preparing silicon dioxide powder loaded with an anti-ultraviolet reagent:
mixing 10.42g of nano silicon dioxide and 14.58g of 2-hydroxy, 4' -methoxybenzophenone, adding 5g of catalyst, heating to 165 ℃, stirring and reacting for 9 hours, vacuum drying, grinding, and sieving with a 200-mesh sieve to obtain the silicon dioxide powder loaded with the anti-ultraviolet reagent; wherein the catalyst is dibutyl tin laurate.
Preparation of siloxane-modified graphene:
adding 6.43g of polyvinyl alcohol into 400mL of deionized water, stirring for 20min at 25 ℃, heating to 80 ℃ and continuously stirring for 70min, and then cooling to 25 ℃ to obtain a polyvinyl alcohol solution; adding 21.43g of graphene oxide into 700mL of deionized water, performing ultrasonic dispersion at a temperature of 50 ℃ and a rotating speed of 2000rps for 6min, and then cooling to 25 ℃ to obtain graphene oxide dispersion liquid; adding 0.6g of modifier into 2% by mass of 50mL glacial acetic acid solution, stirring for 30min to obtain modifier solution, adding 2.14g of chitosan powder into the modifier solution, stirring for 15min, adding the prepared polyvinyl alcohol solution and the prepared graphene oxide dispersion liquid, drying for 24h in a drying oven at 35 ℃ at a rotating speed of 1500rps, and sieving with a 200-mesh sieve after grinding to obtain siloxane modified graphene; the modifier is tea polyphenols.
Preparing an anti-ultraviolet coating:
mixing 10g of modified silicon dioxide powder loaded with an anti-ultraviolet reagent, 8g of siloxane modified graphene, 2g of flatting agent and 27g of curing agent, heating to 75 ℃, stirring at a rotating speed of 300rps for 120min, and then cooling to 40 ℃ to obtain the anti-ultraviolet coating; wherein the leveling agent is polydimethylsiloxane (CAS number is 9016-00-6), and the curing agent is benzoyl peroxide (CAS number is 94-36-0).
Preparing a pressure pipeline:
preparing a pipeline: filling a pipeline preparation material in a pipeline mould, calcining at a high temperature, and curing the calcined pipeline to obtain a pipeline body;
and (3) coating a pipeline coating: and (3) coating the ultraviolet-resistant coating on the surface of the cured pipeline, maintaining the relative humidity at 85% in the environment of 30 ℃, and drying for 36 hours to obtain the high-temperature-resistant high-strength pressure pipeline.
Example 3
Preparing silicon dioxide powder loaded with an anti-ultraviolet reagent:
mixing 8.7g of nano silicon dioxide with 11.3g of 2-hydroxy, 4' -methoxybenzophenone, adding 4g of catalyst, heating to 160 ℃, stirring and reacting for 8.5h, vacuum drying, grinding, and sieving with a 200-mesh sieve to obtain the silicon dioxide powder loaded with the anti-ultraviolet reagent; wherein the catalyst is dibutyl tin laurate.
Preparation of siloxane-modified graphene:
adding 5.07g of polyvinyl alcohol into 300mL of deionized water, stirring for 20min at 25 ℃, heating to 80 ℃ and continuously stirring for 70min, and then cooling to 25 ℃ to obtain a polyvinyl alcohol solution; adding 18.12g of graphene oxide into 600mL of deionized water, performing ultrasonic dispersion at a temperature of 50 ℃ and a rotating speed of 2000rps for 6min, and then cooling to 25 ℃ to obtain graphene oxide dispersion liquid; adding 0.4g of modifier into 2% by mass of 50mL glacial acetic acid solution, stirring for 30min to obtain modifier solution, adding 1.81g of chitosan powder into the modifier solution, stirring for 15min, adding the prepared polyvinyl alcohol solution and the prepared graphene oxide dispersion liquid, drying for 24h in a drying oven at 35 ℃ at a rotating speed of 1500rps, and sieving with a 200-mesh sieve after grinding to obtain siloxane modified graphene; the modifier is tea polyphenols.
Preparing an anti-ultraviolet coating:
9g of modified silicon dioxide powder loaded with an anti-ultraviolet reagent, 7g of siloxane modified graphene, 2g of flatting agent and 23g of curing agent are mixed, then the temperature is raised to 75 ℃, stirring is carried out for 120min at the rotating speed of 300rps, and then cooling is carried out to 40 ℃, so that the anti-ultraviolet coating can be obtained; wherein the leveling agent is polydimethylsiloxane (CAS number is 9016-00-6), and the curing agent is benzoyl peroxide (CAS number is 94-36-0).
Preparing a pressure pipeline:
preparing a pipeline: filling a pipeline preparation material in a pipeline mould, calcining at a high temperature, and curing the calcined pipeline to obtain a pipeline body;
and (3) coating a pipeline coating: and (3) coating the ultraviolet-resistant coating on the surface of the cured pipeline, maintaining the relative humidity at 85% in the environment of 25 ℃, and drying for 36 hours to obtain the high-temperature-resistant high-strength pressure pipeline.
Example 4
Example 4 based on example 3, the only difference between example 4 and example 3 is: when the silica powder carrying the anti-ultraviolet reagent was prepared in example 4, 10.42g of nano silica was weighed and 14.58g of 2-hydroxy, 4' -methoxybenzophenone was weighed.
Example 5
Example 5 based on example 3, the only difference between example 5 and example 3 is: in example 4, when the silica powder carrying the anti-ultraviolet agent was prepared, 7.41g of nanosilica was weighed and 8.89g of 2-hydroxy, 4' -methoxybenzophenone was weighed.
Example 6
Example 6 based on example 3, the only difference between example 6 and example 3 is: in the preparation of the siloxane-modified graphene in example 6, 23.08g of graphene oxide was weighed, 4.62g of polyvinyl alcohol was weighed, and 2.3g of chitosan was weighed.
Example 7
Example 7 based on example 3, the only difference between example 7 and example 3 is: in the preparation of the siloxane-modified graphene in example 7, 20.69g of graphene oxide was weighed, 7.24g of polyvinyl alcohol was weighed, and 2.07g of chitosan was weighed.
Comparative example 1
Comparative example 1 based on example 3, the only difference between comparative example 1 and example 3 is: in comparative example 1, 7g of the added modified silica powder carrying the anti-ultraviolet agent was replaced with 3.04g of the nano silica powder and 3.96g of 2-hydroxy, 4' -methoxybenzophenone were added in the preparation of the anti-ultraviolet coating.
Comparative example 2
Comparative example 2 based on example 3, the only difference between comparative example 2 and example 3 is: in comparative example 2, when siloxane-modified graphene was prepared, 0g of graphene oxide was weighed, 23.33g of polyvinyl alcohol was weighed, and 6.67g of chitosan was weighed.
Comparative example 3
Comparative example 3 based on example 3, the only difference between comparative example 3 and example 3 is that: in comparative example 3, when siloxane-modified graphene was prepared, 22.22g of graphene oxide was weighed, 7.78g of polyvinyl alcohol was weighed, and 0g of chitosan was weighed.
Comparative example 4
Comparative example 4 based on example 3, the only difference between comparative example 4 and example 3 is: in comparative example 4, when siloxane-modified graphene was prepared, 27.27g of graphene oxide was weighed, 0g of polyvinyl alcohol was weighed, and 2.73g of chitosan was weighed.
Performance test
The pressure lines of examples 1-7, comparative examples 1-6 were sampled and tested for performance as follows:
(1) Pressure resistance test after ultraviolet aging
The method comprises the steps of selecting a section 5 of industrial pipeline standard industrial pipeline of GB/T20801.5-2020 pressure pipeline, namely, inspection and test as a detection standard, using an ultraviolet lamp (lamp tube type UVB-313) to conduct 8H illumination and 4H condensation under the radiation intensity of 0.76W, conducting pressure test after 7d circulation at the room temperature of 60 ℃ and 50 ℃ in the dark, and taking the average value of the results to fill in the table 1.
(2) High temperature resistance test after ultraviolet aging
And (3) selecting GBT20801 (1-6) -2006 pressure pipeline standard industrial pipeline as a detection standard, using an ultraviolet lamp (lamp tube model UVB-313) to irradiate 8H and condense 4H under the radiation intensity of 0.76W, performing high temperature resistance test on each sample three times after 7d and 14d circulation at the room temperature of 60 ℃ and 50 ℃ in the dark, and taking an average value of the results to fill in a table 1.
Wherein, the partial qualification index is: the Vicat softening temperature is more than 80 ℃; the longitudinal retraction rate is less than or equal to 5 percent.
Table 1 pressure pipe performance test data
Performance data analysis
As can be seen from Table 1, the compressive strength of examples 1-3 after ultraviolet aging is 70MPa and above, the flexural strength is 11.5MPa and above, the longitudinal retraction rate is 3.5% and below, the Vicat softening temperature is 120 ℃ and above, and the pressure pipeline prepared by the method has no cracking and no leakage phenomenon in the process of transporting liquid for 3 hours at 100 ℃, so that the pressure pipeline still has good high temperature resistance and good pressure resistance after ultraviolet aging.
As can be seen from Table 1, in example 4, the ratio of nano silica is too small, so that the content of 2-hydroxy group and 4' -methoxybenzophenone is too large, while the effect of absorbing ultraviolet rays can be improved, the-OH groups between the too small nano silica and chitosan are difficult to be fully crosslinked, so that the stability of the whole anti-ultraviolet coating is reduced, the stability of the whole coating is reduced, the mechanical properties of the whole anti-ultraviolet coating are further influenced, and the compression strength and the flexural strength of example 4 after ultraviolet aging are reduced, and the longitudinal retraction rate is increased.
In the embodiment 5, the nano silicon dioxide has an excessive proportion, so that the content of 2-hydroxy and 4' -methoxybenzophenone is reduced, more nano silicon dioxide is difficult to react with the hydroxy groups on the surface of the 2-hydroxy and 4' -methoxybenzophenone through the catalyst, so that the nano silicon dioxide is difficult to uniformly disperse in a coating system, the stability of an ultraviolet resistant coating is reduced, and meanwhile, the content of the 2-hydroxy and 4' -methoxybenzophenone is reduced, the absorption of ultraviolet light in the ultraviolet aging process is reduced, so that the compressive strength, the flexural strength and the Vicat softening temperature in the embodiment 5 are reduced, and the longitudinal retraction rate is increased.
In example 6, the ratio of polyvinyl alcohol was decreased, the ratio of graphene oxide to chitosan was increased, the chemical crosslinking effect between the polyvinyl alcohol and the acrylic resin was decreased after the content of polyvinyl alcohol was decreased, and 2-hydroxy, 4' -methoxybenzophenone was migrated during ultraviolet aging, and the stability of the anti-ultraviolet coating was decreased, so that the performance of the anti-ultraviolet coating was decreased after ultraviolet aging.
In example 7, the ratio of polyvinyl alcohol was increased, the ratio of graphene oxide to chitosan was increased, and excessive graphene oxide was agglomerated, so that the overall stability of the anti-uv coating was affected, and the performance of the anti-uv coating was reduced after uv aging.
In comparative example 1, nano silicon dioxide and 2-hydroxy, 4' -methoxybenzophenone are directly added, unmodified nano silicon dioxide and 2-hydroxy, and 4' -methoxybenzophenone have more hydroxy groups, and hydrogen bonds are formed between the two, so that nano silicon dioxide is agglomerated, meanwhile, nano silicon dioxide and 2-hydroxy, and 4' -methoxybenzophenone are difficult to uniformly disperse in an anti-ultraviolet coating, and after the sample is subjected to anti-ultraviolet aging, the anti-ultraviolet coating is rapidly aged, so that each performance of comparative example 1 is reduced after the sample is subjected to ultraviolet aging, and when liquid is transported, local cracks appear, and leakage occurs.
In comparative example 2, no graphene oxide is added, in comparative example 3, no polyvinyl alcohol is added, in comparative example 4, no chitosan is added, and after ultraviolet ageing, the performances of comparative examples 2-4 are all reduced; when graphene oxide is not arranged in the system, a complex winding structure is difficult to form between the graphene oxide and the nano silicon dioxide, and the mechanical property of the ultraviolet resistant coating is greatly reduced; when the system does not contain polyvinyl alcohol, chemical crosslinking is difficult to occur between the polyvinyl alcohol and acrylic resin, 2-hydroxy, 4' -methoxyl benzophenone migrates, the absorption effect on ultraviolet rays is reduced, and after ultraviolet aging, all performances are reduced; when chitosan is not contained in the system, the overall stability of the anti-ultraviolet coating is reduced, hydrogen bonds are difficult to form with nano silicon dioxide, and the mechanical property of the anti-ultraviolet coating is greatly reduced.
The present embodiment is merely illustrative of the present application, and the present application is not limited thereto, and a worker can make various changes and modifications without departing from the scope of the technical idea of the present application. The technical scope of the present application is not limited to the contents of the specification, and must be determined according to the scope of claims.
Claims (9)
1. The utility model provides a high temperature resistant high strength pressure pipeline which characterized in that: the anti-ultraviolet coating is obtained by coating the anti-ultraviolet coating on the surface of a pipeline body, and comprises the following components in parts by weight:
120-160 parts of modified hydrophobic acrylic resin matrix
6-8 parts of siloxane modified graphene
8-10 parts of silicon dioxide powder loaded with anti-ultraviolet reagent
20-27 parts of curing agent
2-3 parts of leveling agent
The silicon dioxide powder loaded with the anti-ultraviolet reagent comprises 2-hydroxy, 4' -methoxybenzophenone and nano silicon dioxide.
2. A high temperature and high strength pressure resistant pipe as claimed in claim 1, wherein: the silicon dioxide powder loaded with the anti-ultraviolet reagent is prepared by the following method:
mixing nano silicon dioxide, 2-hydroxy, 4' -methoxybenzophenone and a catalyst, stirring for reaction, then vacuum drying and grinding to obtain the silicon dioxide powder loaded with the anti-ultraviolet reagent.
3. A high temperature and high strength pressure resistant pipe as claimed in claim 2, wherein: the reaction time is 8-9h, and the reaction temperature is 155-165 ℃.
4. A high temperature and high strength pressure resistant pipe as claimed in claim 2, wherein: the catalyst is dibutyl tin laurate.
5. A high temperature and high strength pressure resistant pipe as claimed in claim 2, wherein: the mass ratio of the nano silicon dioxide to the 2-hydroxy, 4' -methoxyl diphenyl ketone is 1:1.2-1.4.
6. A high temperature and high strength pressure resistant pipe as claimed in claim 1, wherein: the siloxane modified graphene comprises graphene oxide, polyvinyl alcohol and chitosan; the siloxane modified graphene is prepared by the following method:
adding polyvinyl alcohol into deionized water and stirring to obtain a polyvinyl alcohol solution; mixing graphene oxide with ionized water and stirring to obtain graphene oxide dispersion liquid; adding a modifier into glacial acetic acid solution, stirring to obtain a modifier solution, adding chitosan, the prepared polyvinyl alcohol solution and the prepared graphene oxide dispersion liquid into the modifier solution, stirring, drying and grinding to obtain the siloxane modified graphene.
7. The high temperature and high strength pressure resistant pipe of claim 6, wherein: the modifier is tea polyphenol.
8. The high temperature and high strength pressure resistant pipe of claim 6, wherein: the mass ratio of graphene oxide to polyvinyl alcohol to chitosan is 1 (0.26-0.3) to 0.1.
9. The production process applied to the high-temperature-resistant high-strength pressure pipeline is characterized by comprising the following steps of: the method comprises the following steps:
preparing a pipeline: filling a pipeline preparation material in a pipeline mould, calcining, and curing the calcined pipeline to obtain a pipeline body;
and (3) coating a pipeline coating: and (3) coating the ultraviolet-resistant coating on the surface of the cured pipeline, maintaining the relative humidity at 85% in the environment of 10-30 ℃, and drying for more than 36 hours to obtain the high-temperature-resistant high-strength pressure pipeline.
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