CN110872477A - Butyl pressure-sensitive adhesive and preparation method and application thereof - Google Patents
Butyl pressure-sensitive adhesive and preparation method and application thereof Download PDFInfo
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- CN110872477A CN110872477A CN201811024494.1A CN201811024494A CN110872477A CN 110872477 A CN110872477 A CN 110872477A CN 201811024494 A CN201811024494 A CN 201811024494A CN 110872477 A CN110872477 A CN 110872477A
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- sensitive adhesive
- butyl
- butyl pressure
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- 239000004820 Pressure-sensitive adhesive Substances 0.000 title claims abstract description 97
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 title claims abstract description 97
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000011347 resin Substances 0.000 claims abstract description 50
- 229920005989 resin Polymers 0.000 claims abstract description 50
- -1 polyethylene Polymers 0.000 claims abstract description 42
- 229920005549 butyl rubber Polymers 0.000 claims abstract description 37
- 229920002367 Polyisobutene Polymers 0.000 claims abstract description 35
- 239000004698 Polyethylene Substances 0.000 claims abstract description 30
- 229920000573 polyethylene Polymers 0.000 claims abstract description 30
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 27
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 21
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 20
- 239000011256 inorganic filler Substances 0.000 claims abstract description 20
- 229910003475 inorganic filler Inorganic materials 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims description 30
- 238000003756 stirring Methods 0.000 claims description 29
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 14
- 239000003208 petroleum Substances 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 229910052799 carbon Inorganic materials 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 12
- 239000012790 adhesive layer Substances 0.000 claims description 8
- 239000005995 Aluminium silicate Substances 0.000 claims description 7
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 claims description 7
- 235000012211 aluminium silicate Nutrition 0.000 claims description 7
- 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 7
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 7
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 7
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 claims description 7
- 150000003505 terpenes Chemical class 0.000 claims description 7
- 235000007586 terpenes Nutrition 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 6
- DZCCLNYLUGNUKQ-UHFFFAOYSA-N n-(4-nitrosophenyl)hydroxylamine Chemical group ONC1=CC=C(N=O)C=C1 DZCCLNYLUGNUKQ-UHFFFAOYSA-N 0.000 claims description 6
- 239000002344 surface layer Substances 0.000 claims description 5
- 239000000440 bentonite Substances 0.000 claims description 4
- 229910000278 bentonite Inorganic materials 0.000 claims description 4
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 4
- 238000004898 kneading Methods 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 239000002689 soil Substances 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 10
- 238000005536 corrosion prevention Methods 0.000 abstract description 8
- 230000035882 stress Effects 0.000 abstract description 8
- 230000032683 aging Effects 0.000 abstract description 7
- 239000010426 asphalt Substances 0.000 description 7
- 238000013461 design Methods 0.000 description 7
- 239000004215 Carbon black (E152) Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 6
- 229930195733 hydrocarbon Natural products 0.000 description 6
- 150000002430 hydrocarbons Chemical class 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 5
- 230000002195 synergetic effect Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000002390 adhesive tape Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- AZQWKYJCGOJGHM-UHFFFAOYSA-N 1,4-benzoquinone Chemical compound O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000003712 anti-aging effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000012854 evaluation process Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J123/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C09J123/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
- C09J123/22—Copolymers of isobutene; Butyl rubber ; Homo- or copolymers of other iso-olefines
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
-
- 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
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- 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
- C08L2201/00—Properties
- C08L2201/14—Gas barrier composition
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a butyl pressure-sensitive adhesive and a preparation method and application thereof, belonging to the field of pipeline corrosion prevention. The butyl pressure-sensitive adhesive is prepared from the following components in parts by weight: 20-30 parts of 40-48 million molecular weight butyl rubber, 10-15 parts of 9 million molecular weight polyisobutylene, 10-15 parts of 5 million molecular weight polyisobutylene, 5-10 parts of polyethylene, 15-25 parts of tackifying resin, 20-40 parts of inorganic filler, 0.5-1.5 parts of antioxidant and 0.04-0.15 part of vulcanizing agent; the vulcanizing agent is used for vulcanizing and modifying the butyl rubber. The butyl pressure-sensitive adhesive has good heat resistance, soil stress strain resistance, cohesiveness and ageing resistance, and can remarkably improve the pipeline anticorrosion effect.
Description
Technical Field
The invention relates to the field of pipeline corrosion prevention, and particularly relates to a butyl pressure-sensitive adhesive as well as a preparation method and application thereof.
Background
Pipelines are used in a wide range of applications, for example, in the transportation of fluids such as oil, gas, water, etc. The material of pipeline generally is steel, and in the pipeline use, the inevitable problem of corroding appears, mainly plays the anticorrosive action through setting up polyethylene (3PE) of three layer construction on the wall of pipeline at present. However, the 3PE anticorrosive coating is easy to peel off and fail, so that the pipeline matrix is corroded, and hidden troubles are brought to the production and operation of the pipeline. Therefore, it is necessary to find a new corrosion protection layer for use in pipelines to prolong the service life of the pipelines.
In the related technology, the asphalt modified butyl pressure-sensitive adhesive is used as an adhesive layer to be adhered to the wall of the pipeline, and the polyethylene is used as a surface layer to be adhered to the outer surface of the adhesive layer, so that the anticorrosion effect is achieved.
The inventors found that the related art has at least the following problems:
the asphalt modified butyl pressure-sensitive adhesive provided by the related technology has poor heat resistance, soil stress resistance and shearing capacity, so that the asphalt modified butyl pressure-sensitive adhesive has poor anticorrosion effect on polyethylene.
Disclosure of Invention
The embodiment of the invention provides a butyl pressure-sensitive adhesive, and a preparation method and application thereof, which can solve the technical problems. The specific technical scheme is as follows:
on one hand, the embodiment of the invention provides a butyl pressure-sensitive adhesive, which is prepared from the following components in parts by weight:
20-30 parts of 40-48 million molecular weight butyl rubber, 10-15 parts of 9 million molecular weight polyisobutylene, 10-15 parts of 5 million molecular weight polyisobutylene, 5-10 parts of polyethylene, 15-25 parts of tackifying resin, 20-40 parts of inorganic filler, 0.5-1.5 parts of antioxidant and 0.04-0.15 part of vulcanizing agent;
the vulcanizing agent is used for vulcanizing and modifying the butyl rubber.
In one possible design, the tackifying resin is selected from at least one of terpene resins, carbon penta petroleum resins, carbon acanthopanax petroleum resins.
In one possible design, the vulcanizing agent is p-benzoquinone dioxime.
In one possible design, the inorganic filler comprises the following components in parts by weight:
5-10 parts of organic bentonite, 5-10 parts of calcined kaolin and 10-20 parts of barium sulfate.
In one possible design, the polyethylene is a linear low density polyethylene.
In one possible design, the antioxidant is pentaerythrityl tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ].
In one possible design, the butyl pressure-sensitive adhesive is prepared from the following components in parts by weight:
25 parts of butyl rubber, 10 parts of polyisobutylene with the molecular weight of 9 ten thousand, 15 parts of polyisobutylene with the molecular weight of 5 ten thousand, 5 parts of polyethylene, 20 parts of tackifying resin, 24 parts of inorganic filler, 1 part of antioxidant and 0.1 part of vulcanizing agent.
In another aspect, the present invention provides a preparation method of any one of the butyl pressure sensitive adhesives mentioned above, where the preparation method includes:
according to the weight parts of all the components, the butyl rubber, 9 ten thousand molecular weight polyisobutylene and inorganic filler are placed in a double-roll mill to be mixed uniformly to prepare a sheet body;
putting tackifying resin and polyethylene into a kneading machine, stirring and heating to be uniformly molten;
adding polyisobutylene with the molecular weight of 5 ten thousand into the kneader, and continuing the stirring and the heating until the polyisobutylene is uniformly melted;
adding the sheet body and the antioxidant into the kneader, and continuing the stirring and the heating until the mixture is uniformly melted;
and adding a vulcanizing agent into the kneader, continuing stirring and heating until the mixture is uniformly melted, preserving heat, and discharging to obtain the butyl pressure-sensitive adhesive.
In one possible design, the temperature of the heating is 140 ℃ to 160 ℃;
the heat preservation time is 15-25 min.
In another aspect, the embodiments of the present invention provide an application of the butyl pressure sensitive adhesive mentioned in any one of the above in pipeline corrosion prevention, where the application includes:
and the butyl pressure-sensitive adhesive is used as an adhesive layer to be adhered to the wall of the pipeline, and the polypropylene and/or the polyethylene is used as a surface layer to be adhered to the adhesive layer.
The technical scheme provided by the embodiment of the invention has the beneficial effects that at least:
according to the butyl pressure-sensitive adhesive provided by the embodiment of the invention, 9 ten thousand molecular weight and 5 ten thousand molecular weight polyisobutylene are added, the butyl rubber which is vulcanized and modified by a vulcanizing agent to prolong the molecular chain length is cooperatively matched with other components, so that the butyl pressure-sensitive adhesive has good heat resistance, moisture barrier property and corrosion resistance, can stably exist at 70 ℃ and does not flow. The butyl pressure-sensitive adhesive has good shear strength at high temperature by adding polyethylene and cooperating with other components. By adding the inorganic filler and cooperating with other components, the butyl pressure-sensitive adhesive has good mechanical strength, and the cohesive strength and the soil shear resistance of the butyl pressure-sensitive adhesive are improved. The butyl pressure-sensitive adhesive is endowed with good bonding performance by adding the tackifying resin and cooperating with other components. By adding the antioxidant and cooperating with other components, the anti-aging performance of the butyl pressure-sensitive adhesive is improved, and the service life of the butyl pressure-sensitive adhesive is prolonged. Therefore, the butyl pressure-sensitive adhesive has good heat resistance, soil stress strain resistance, cohesiveness and aging resistance, and can remarkably improve the pipeline anticorrosion effect.
Detailed Description
Unless defined otherwise, all technical terms used in the examples of the present invention have the same meaning as commonly understood by one of ordinary skill in the art.
The molecular chain of the butyl rubber includes an unsaturated bond.
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in further detail below.
On one hand, the embodiment of the invention provides a butyl pressure-sensitive adhesive, which is prepared from the following components in parts by weight:
20-30 parts of 40-48 million molecular weight butyl rubber, 10-15 parts of 9 million molecular weight polyisobutylene, 10-15 parts of 5 million molecular weight polyisobutylene, 5-10 parts of polyethylene, 15-25 parts of tackifying resin, 20-40 parts of inorganic filler, 0.5-1.5 parts of antioxidant and 0.04-0.15 part of vulcanizing agent. Wherein, the vulcanizing agent is used for vulcanizing and modifying the butyl rubber.
The vulcanizing agent is used for vulcanizing and modifying the butyl rubber, so that an unsaturated bond in a butyl rubber molecule is opened and is crosslinked with an unsaturated bond opened in another butyl rubber molecule, the length of a butyl rubber molecular chain is increased, a crosslinked net can be formed, and the performance of the butyl pressure-sensitive adhesive is improved.
According to the butyl pressure-sensitive adhesive provided by the embodiment of the invention, 9 ten thousand molecular weight and 5 ten thousand molecular weight polyisobutylene are added, the butyl rubber which is vulcanized and modified by a vulcanizing agent to prolong the molecular chain length is cooperatively matched with other components, so that the butyl pressure-sensitive adhesive has good heat resistance, moisture barrier property and corrosion resistance, can stably exist at 70 ℃ and does not flow. The butyl pressure-sensitive adhesive has good shear strength at high temperature by adding polyethylene and cooperating with other components. By adding the inorganic filler and cooperating with other components, the butyl pressure-sensitive adhesive has good mechanical strength, and the cohesive strength and the soil shear resistance of the butyl pressure-sensitive adhesive are improved. The butyl pressure-sensitive adhesive is endowed with good bonding performance by adding the tackifying resin and cooperating with other components. By adding the antioxidant and cooperating with other components, the anti-aging performance of the butyl pressure-sensitive adhesive is improved, and the service life of the butyl pressure-sensitive adhesive is prolonged. Therefore, the butyl pressure-sensitive adhesive has good heat resistance, soil stress strain resistance, cohesiveness and aging resistance, and can remarkably improve the pipeline anticorrosion effect.
In the embodiment of the present invention, the weight parts of the butyl rubber may be 20 parts, 21 parts, 22 parts, 23 parts, 24 parts, 25 parts, 26 parts, 27 parts, 28 parts, 29 parts, 30 parts, etc. The molecular weight of the butyl rubber can be 40, 41, 42, 43, 44, 45, 46, 47, 48, etc. The 9 ten thousand molecular weight polyisobutylene may be present in 10, 11, 12, 13, 14, 15, etc. parts by weight. The 5 ten thousand molecular weight polyisobutylene may be in the amount of 10, 11, 12, 13, 14, 15 parts by weight. The polyethylene may be present in amounts of 5, 6, 7, 8, 9, 10 parts by weight, and the like. The parts by weight of the tackifying resin can be 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts, 21 parts, 22 parts, 23 parts, 24 parts, 25 parts and the like. The inorganic filler may be present in an amount of 20 parts, 22 parts, 24 parts, 26 parts, 28 parts, 30 parts, 31 parts, 33 parts, 35 parts, 37 parts, 39 parts, 40 parts, etc. The antioxidant can be 0.5 part, 0.6 part, 0.7 part, 0.8 part, 0.9 part, 1 part, 1.1 part, 1.2 parts, 1.3 parts, 1.4 parts, 1.5 parts and the like in parts by weight. The vulcanizing agent may be present in an amount of 0.04 parts, 0.05 parts, 0.06 parts, 0.07 parts, 0.08 parts, 0.09 parts, 0.1 parts, 0.11 parts, 0.12 parts, 0.13 parts, 0.14 parts, 0.15 parts, etc.
The tackifying resin and other components have synergistic effect, so that the butyl pressure-sensitive adhesive is endowed with excellent viscosity, and the adhesion strength between the butyl pressure-sensitive adhesive and substrates such as pipelines and the like is favorably increased. Considering the characteristics of good tackifying effect, low price, easy acquisition and the like after the tackifying resin and other components have synergistic effect, the tackifying resin can be selected from at least one of terpene resin, carbon five petroleum resin and carbon acanthopanax hydrogen petroleum resin. For example, the tackifying resin may be selected from any one, two, or three of the three. When the tackifying resin is a mixture, the ratio of the components is not particularly limited.
For example, when the tackifying resin is a mixture of terpene resin and carbon pentapetroleum resin, the mass ratio of terpene resin to carbon pentapetroleum resin may be 1:1, 1:2, 1:3, 2:1, 2:3, 3:1, 3:2, 3:4, 4:1, 4:3, etc.
When the tackifying resin is a mixture of terpene resin, carbon pentapetroleum resin and carbon acanthopanax hydrogen petroleum resin, the mass ratio of terpene resin, carbon pentapetroleum resin and carbon acanthopanax hydrogen petroleum resin can be 1:1:1, 1:2:1, 1:3:1, 1:4:1, 2:1:1, 2:2:1, 2:3:1, 2:4:1, 3:1:1, 3:2:1, 3:1:3, 3:2:3 and the like.
As an example, the tackifying resin is a hydrocarbon petroleum resin.
The hydrocarbon acanthopanax hydrogen petroleum resin and other components are cooperated to act, so that the butyl pressure-sensitive adhesive has good initial viscosity, and the main chain of the hydrocarbon acanthopanax hydrogen petroleum resin does not contain double bonds, so that the butyl pressure-sensitive adhesive is not easy to age and deteriorate, and has better aging resistance.
In the above, the vulcanizing agent is used for vulcanizing and modifying the butyl rubber to extend the molecular chain length thereof, so that the butyl pressure-sensitive adhesive provided by the embodiment of the invention has good heat resistance and is not easy to flow. The vulcanizing agents can be selected from a plurality of vulcanizing agents, and the following examples are given on the premise that the double bonds of the butyl rubber can be opened to prolong the molecular chain length of the butyl rubber, so that the butyl pressure-sensitive adhesive is good in stability:
the vulcanizing agent may be p-benzoquinone dioxime.
The p-benzoquinone dioxime enables the butyl rubber to have a good vulcanization effect, enables unsaturated bonds in butyl rubber molecules to be opened and to be crosslinked with the unsaturated bonds opened in another butyl rubber molecule, increases the length of butyl rubber molecular chains, can also form crosslinked networks, and further improves the heat resistance and the mechanical property of the butyl pressure-sensitive adhesive.
The inorganic filler can be selected from a plurality of inorganic fillers, and the following examples are given in consideration of good reinforcing effect after the inorganic filler and other components have synergistic effect and capability of increasing the cohesive strength and the soil shear resistance of the butyl pressure-sensitive adhesive: the inorganic filler comprises the following components in parts by weight: 5-10 parts of organic bentonite, 5-10 parts of calcined kaolin and 10-20 parts of barium sulfate.
Wherein, the organic bentonite can be 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts and the like. The calcined kaolin can be 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, and the like, by weight. The weight parts of barium sulfate can be 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts and the like.
As an example, the polyethylene may be a linear low density polyethylene.
The butyl pressure-sensitive adhesive is prepared from the linear low-density polyethylene and other components in a synergistic and matched manner, so that the butyl pressure-sensitive adhesive has good initial adhesive property and is beneficial to application of the butyl pressure-sensitive adhesive.
In consideration of good synergistic effect, good antioxidant effect, stable performance and the like of the antioxidant and other components, in the embodiment of the invention, the antioxidant can be pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] pentaerythritol ester, which is also called antioxidant 1010.
As an example, the butyl pressure-sensitive adhesive provided by the embodiment of the present invention is prepared from the following components in parts by weight:
25 parts of butyl rubber, 10 parts of polyisobutylene with 9 million molecular weight, 15 parts of polyisobutylene with 5 million molecular weight, 5 parts of polyethylene, 20 parts of tackifying resin, 24 parts of inorganic filler, 1 part of antioxidant and 0.1 part of vulcanizing agent.
By setting the weight parts of the components, the heat resistance, the soil stress strain resistance, the adhesion and the aging resistance of the butyl pressure-sensitive adhesive can be optimized, and the pipeline corrosion prevention effect can be obviously improved.
On the other hand, the embodiment of the invention also provides a preparation method of the butyl pressure-sensitive adhesive, which comprises the following steps:
step 101, according to the weight parts of the components, placing butyl rubber, 9 ten thousand molecular weight polyisobutylene and inorganic filler into a double-roll mill, and uniformly mixing to obtain the sheet body.
102, placing the tackifying resin and the polyethylene in a kneader, stirring and heating until the tackifying resin and the polyethylene are uniformly melted.
103, adding polyisobutylene with the molecular weight of 5 ten thousand into the kneader, and continuing stirring and heating until the polyisobutylene is uniformly melted.
And step 104, adding the sheet body and the antioxidant into the kneader, and continuing stirring and heating until the sheet body and the antioxidant are uniformly molten.
And 105, adding a vulcanizing agent into the kneading machine, continuously stirring and heating until the mixture is uniformly molten, preserving heat, and discharging to obtain the butyl pressure-sensitive adhesive.
In steps 102 to 105, the stirring rate and the heating temperature were constant.
The preparation method of the butyl pressure-sensitive adhesive provided by the embodiment of the invention is simple, so that the prepared butyl pressure-sensitive adhesive has good heat resistance, soil stress strain resistance, cohesiveness and aging resistance, and the pipeline anticorrosion effect can be obviously improved. And the base body can be primarily prepared by uniformly mixing the butyl rubber, the polyisobutylene with the molecular weight of 9 ten thousand and the inorganic filler in a double-roll mill. The butyl pressure-sensitive adhesive with uniform components can be easily prepared by uniformly melting tackifying resin and polyethylene in a kneader, then adding polyisobutylene with 5 ten thousand molecular weight, flake bodies and antioxidant in batches, and uniformly melting. After the vulcanizing agent is added, the uniformly dispersed butyl rubber molecular chains are crosslinked, the length of the molecular chains is prolonged, and further the heat resistance and the mechanical strength of the butyl pressure-sensitive adhesive are enhanced, so that the butyl pressure-sensitive adhesive is beneficial to being applied to pipeline corrosion prevention.
In steps 102 to 105, the heating temperature is 140 ℃ to 160 ℃, for example, 140 ℃, 141 ℃, 142 ℃, 143 ℃, 145 ℃, 147 ℃, 149 ℃, 150 ℃, 151 ℃, 153 ℃, 155 ℃, 157 ℃, 159 ℃, 160 ℃ and the like; in step 105, the heat preservation time is 15-25 min, for example, 15min, 16min, 17min, 18min, 19min, 20min, 21min, 22min, 23min, 24min, 25min, etc.
After the vulcanizing agent is added, stirring and heating can be carried out for 13-18 min, for example, 13min, 14min, 15min, 16min, 17min, 18min and the like.
The above parameters are set in such a way, so that the components are fully melted, and the uniformity of the components is ensured. And the stirring and heating time after the vulcanizing agent is added is set, so that cross-linking can be generated between the butyl rubber molecular chains, the molecular chain length of the butyl rubber is prolonged, and other side reactions can not be generated.
The stirring time in steps 102 to 105 is not particularly limited, and the components may be uniformly melted. For example, in step 104, the stirring time may be 1 h.
In another aspect, the embodiments of the present invention provide an application of any of the butyl pressure sensitive adhesives mentioned above in pipeline corrosion prevention, where the application includes:
the butyl pressure-sensitive adhesive is used as an adhesive layer to be adhered to the wall of the pipeline, and the polypropylene and/or the polyethylene is used as a surface layer to be adhered to the adhesive layer.
In the application, the butyl pressure-sensitive adhesive can be firmly adhered to the wall of the pipeline, the adhesion strength between the butyl pressure-sensitive adhesive and the surface layer is high, the mechanical strength of the butyl pressure-sensitive adhesive is good, the ageing resistance is good, and the corrosion prevention effect of the pipeline can be obviously improved.
The present invention will be further described below by way of specific examples.
In the following examples, those whose operations are not subject to the conditions indicated, are carried out according to the conventional conditions or conditions recommended by the manufacturer. The raw materials are conventional products which can be obtained commercially by manufacturers and specifications.
Example 1
This example provides a butyl pressure sensitive adhesive prepared by placing 25 parts by weight of 40 ten thousand molecular weight butyl rubber, 10 parts by weight of 9 ten thousand molecular weight polyisobutylene, 5 parts by weight organobentonite, 5 parts by weight calcined kaolin, and 14 parts by weight barium sulfate in a two roll mill, mixing uniformly to obtain a sheet, placing 20 parts by weight of hydrocarbon petroleum resin and 5 parts by weight of linear low density polyethylene in a kneader, stirring and heating to 145 ℃ to melt uniformly, adding 15 parts by weight of 5 ten thousand molecular weight polyisobutylene to the kneader, continuing stirring and heating to melt uniformly, adding 1 part by weight of the sheet and tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] pentaerythritol ester to the kneader, continuing stirring and heating for 1h, adding 0.1 part by weight of p-benzoquinone dioxime to the kneader, continuing stirring and heating for 15min, maintaining the temperature for 20min, and discharging to obtain the butyl pressure sensitive adhesive provided in this example.
Example 2
This example provides a butyl pressure sensitive adhesive prepared by placing 20 parts by weight of 40 ten thousand molecular weight butyl rubber, 12 parts by weight of 9 ten thousand molecular weight polyisobutylene, 5 parts by weight organobentonite, 5 parts by weight calcined kaolin, and 10 parts by weight barium sulfate in a two roll mill, mixing uniformly to obtain a sheet, placing 15 parts by weight of hydrocarbon petroleum resin and 7 parts by weight of linear low density polyethylene in a kneader, stirring and heating to 150 ℃ to melt uniformly, adding 12 parts by weight of 5 ten thousand molecular weight polyisobutylene to the kneader, continuing stirring and heating to melt uniformly, adding 0.5 part by weight of the sheet and tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] pentaerythritol ester to the kneader, continuing stirring and heating for 1h, adding 0.04 part by weight p-benzoquinone to the kneader, continuing stirring and heating for 13min, maintaining the temperature for 15min, and discharging to obtain the butyl pressure sensitive adhesive provided in this example.
Example 3
This example provides a butyl pressure sensitive adhesive prepared by placing 30 parts by weight of butyl rubber having a molecular weight of 40 ten thousand, 15 parts by weight of polyisobutylene having a molecular weight of 9 ten thousand, and 8 parts by weight of organobentonite, 8 parts by weight of calcined kaolin, and 10 parts by weight of barium sulfate in a two-roll mill, kneading the mixture uniformly to obtain a sheet, placing 25 parts by weight of hydrocarbon petroleum resin and 10 parts by weight of linear low density polyethylene in a kneader, stirring and heating the mixture to 160 ℃ to melt the mixture uniformly, adding 10 parts by weight of polyisobutylene having a molecular weight of 5 ten thousand to the kneader, continuing stirring and heating the mixture to melt the mixture uniformly, adding 1 part by weight of the sheet and tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] pentaerythritol ester in the kneader, continuing stirring and heating for 1 hour, adding 0.1 part by weight of p-benzoquinone dioxime in the kneader, continuing stirring and heating for 18 minutes, maintaining the temperature for 25 minutes, and discharging the butyl pressure sensitive adhesive provided in this example.
Application example 1
This application example evaluates the shear strength of the butyl pressure-sensitive adhesive provided in examples 1 to 3. The specific evaluation process comprises the following steps: (1) the shear strength of the butyl pressure-sensitive adhesive provided in the examples 1 to 3 and the asphalt modified butyl pressure-sensitive adhesive provided in the related technology are respectively tested at normal temperature at a testing speed of 10mm/min by adopting a method provided by the standard GB T23257-2017 buried steel pipeline polyethylene anticorrosive coating. And, the butyl pressure sensitive adhesives provided in examples 1 to 3, respectively, and the asphalt modified butyl pressure sensitive adhesive provided in the related art were tested for shear strength at 70 ℃. The specific parameters are detailed in table 1.
TABLE 1
| Butyl pressure-sensitive adhesive | Shear strength at Normal temperature/MPa | Shear strength at 70 ℃ in MPa |
| Example 1 | 0.12 | 0.04 |
| Example 2 | 0.11 | 0.03 |
| Example 3 | 0.10 | 0.02 |
| Asphalt modified butyl pressure-sensitive adhesive | 0.07 | 0.005 |
As can be seen from table 1, the shear strength of the butyl pressure-sensitive adhesive provided in embodiments 1 to 3 at normal temperature and 70 ℃ is greater than that of the asphalt-modified butyl pressure-sensitive adhesive provided in the related art, which indicates that the butyl pressure-sensitive adhesive provided in the embodiments of the present invention has good shear strength at normal temperature and 70 ℃ and can meet the use requirement of pipeline corrosion prevention.
Application example 2
This application example evaluates the peeling properties of the butyl pressure-sensitive adhesives provided in examples 1 to 3. The specific evaluation process comprises the following steps: the butyl pressure sensitive adhesives provided in examples 1 to 3 were coated on polyethylene substrates, respectively, to prepare cold-wrap tapes. The three cold winding adhesive tapes and the asphalt modified butyl pressure-sensitive adhesive cold winding adhesive tape are respectively wound on the steel pipe base material and are numbered as No. 1, No. 2, No. 3 and No. 4 in sequence. The steel peel strength was tested at normal temperature and 70 ℃ respectively at a test speed of 10mm/min according to the method provided in ISO21809-3-2014, appendix D, test Standard. The specific parameters are detailed in table 2.
TABLE 2
| Numbering | Steel peel strength/(N/cm) at room temperature | Strength of steel glass/(N/cm) at 70 DEG C |
| Number 1 | 11.2 | 2.8 |
| Number 2 | 11.1 | 2.7 |
| No. 3 | 11.3 | 2.6 |
| Number 4 | 7.5 | 0.5 |
As can be seen from table 2, the shear strength of the cold-wound tapes prepared from the butyl pressure sensitive adhesives provided in examples 1 to 3 at room temperature and 70 ℃ is greater than that of the asphalt-modified butyl pressure sensitive adhesive cold-wound adhesive provided in the related art, which indicates that the butyl pressure sensitive adhesive provided in the examples of the present invention has excellent adhesion, heat resistance and soil stress strain resistance, and can significantly improve the anti-corrosion service life of the polyethylene cold-wound tape.
In conclusion, the butyl pressure-sensitive adhesive provided by the embodiment of the invention has excellent shear strength, adhesive force, heat resistance and soil stress strain resistance, and can remarkably prolong the anticorrosion service life of the polyethylene cold-winding adhesive tape.
The above description is only an illustrative embodiment of the present invention, and should not be taken as limiting the scope of the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The butyl pressure-sensitive adhesive is characterized by being prepared from the following components in parts by weight:
20-30 parts of 40-48 million molecular weight butyl rubber, 10-15 parts of 9 million molecular weight polyisobutylene, 10-15 parts of 5 million molecular weight polyisobutylene, 5-10 parts of polyethylene, 15-25 parts of tackifying resin, 20-40 parts of inorganic filler, 0.5-1.5 parts of antioxidant and 0.04-0.15 part of vulcanizing agent;
the vulcanizing agent is used for vulcanizing and modifying the butyl rubber.
2. The butyl pressure sensitive adhesive of claim 1, wherein the tackifying resin is selected from at least one of terpene resins, carbon penta petroleum resins, and carbon acanthopanax petroleum resins.
3. The butyl pressure sensitive adhesive according to claim 1, wherein the vulcanizing agent is p-benzoquinone dioxime.
4. The butyl pressure sensitive adhesive according to claim 1, wherein the inorganic filler comprises the following components in parts by weight:
5-10 parts of organic bentonite, 5-10 parts of calcined kaolin and 10-20 parts of barium sulfate.
5. The butyl pressure sensitive adhesive of claim 1, wherein the polyethylene is linear low density polyethylene.
6. The butyl pressure sensitive adhesive of claim 1, wherein the antioxidant is pentaerythrityl tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ].
7. The butyl pressure-sensitive adhesive according to any one of claims 1 to 6, wherein the butyl pressure-sensitive adhesive is prepared from the following components in parts by weight:
25 parts of butyl rubber, 10 parts of polyisobutylene with the molecular weight of 9 ten thousand, 15 parts of polyisobutylene with the molecular weight of 5 ten thousand, 5 parts of polyethylene, 20 parts of tackifying resin, 24 parts of inorganic filler, 1 part of antioxidant and 0.1 part of vulcanizing agent.
8. A preparation method of the butyl pressure sensitive adhesive according to any one of claims 1 to 7, wherein the preparation method comprises the following steps:
according to the weight parts of all the components, the butyl rubber, 9 ten thousand molecular weight polyisobutylene and inorganic filler are placed in a double-roll mill to be mixed uniformly to prepare a sheet body;
putting tackifying resin and polyethylene into a kneading machine, stirring and heating to be uniformly molten;
adding polyisobutylene with the molecular weight of 5 ten thousand into the kneader, and continuing the stirring and the heating until the polyisobutylene is uniformly melted;
adding the sheet body and an antioxidant into the kneader, and continuing stirring and heating until the sheet body and the antioxidant are uniformly melted;
and adding a vulcanizing agent into the kneader, continuing stirring and heating until the mixture is uniformly melted, preserving heat, and discharging to obtain the butyl pressure-sensitive adhesive.
9. The method for preparing butyl pressure sensitive adhesive according to claim 8, wherein the heating temperature is 140 ℃ to 160 ℃;
the heat preservation time is 15-25 min.
10. Use of a butyl pressure sensitive adhesive according to any one of claims 1 to 7 for the preservation of pipes, comprising:
and the butyl pressure-sensitive adhesive is used as an adhesive layer to be adhered to the wall of the pipeline, and the polypropylene and/or the polyethylene is used as a surface layer to be adhered to the adhesive layer.
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| CN114213985A (en) * | 2022-01-10 | 2022-03-22 | 安徽德淳新材料科技有限公司 | Special fluorine carbon film butyl self-adhesion coiled material of photovoltaic and production facility thereof |
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| CN114621708A (en) * | 2022-04-11 | 2022-06-14 | 四川北尚新材料科技有限公司 | Viscoelastic body anticorrosive adhesive and preparation method and application thereof |
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