CN112280492A - Double-layer composite pre-vulcanized butyl rubber plate - Google Patents
Double-layer composite pre-vulcanized butyl rubber plate Download PDFInfo
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- CN112280492A CN112280492A CN202011141484.3A CN202011141484A CN112280492A CN 112280492 A CN112280492 A CN 112280492A CN 202011141484 A CN202011141484 A CN 202011141484A CN 112280492 A CN112280492 A CN 112280492A
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
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- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/26—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
- C08L23/28—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment by reaction with halogens or compounds containing halogen
- C08L23/283—Halogenated homo- or copolymers of iso-olefins
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- C09J107/00—Adhesives based on natural rubber
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- 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
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- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/241—Polyolefin, e.g.rubber
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- 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
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
The invention provides a double-layer composite pre-vulcanized butyl rubber plate which comprises an adhesive layer and an anticorrosive layer, wherein the adhesive layer and the anticorrosive layer are compounded through compression, and the adhesive layer comprises the following components in parts by weight: 80-120 parts of natural rubber, 10-30 parts of butyl rubber, 10-50 parts of chloroprene rubber, 20-60 parts of argil, 3-15 parts of barium sulfate, 0.1-0.7 part of magnesium oxide, 2-8 parts of phenolic resin, 0.2-1 part of stearic acid and 1-2 parts of first accelerator, wherein the anticorrosive layer comprises the following components in parts by mass: 80-120 parts of chlorinated butyl rubber, 10-30 parts of barium sulfate, 1-2 parts of titanium dioxide, 0.5-1.5 parts of phenolic resin, 0.1-1 part of stearic acid, 2-10 parts of stabilizer and 1-4 parts of second accelerator, and the final rubber plate has good adhesive property and corrosion resistance and good application prospect by respectively preparing the adhesive layer and the corrosion resistance layer.
Description
Technical Field
The invention relates to the technical field of rubber materials, in particular to a double-layer composite pre-vulcanized butyl rubber plate.
Background
Rubber products are widely used in daily life and industrial production, and besides the inherent properties of rubber, various application environments have special performance requirements on rubber. The medium resistance of the rubber product mainly refers to the capability of resisting the damage of corrosive media such as acid, alkali, salt and the like, some acids have both acidity and oxidizability, and when the rubber product is contacted with the rubber product, under the actions of acidolysis and oxidation, the rubber and compounding agents in the rubber can swell, dissolve and even decompose.
In the lining protective rubber used in equipment, if the lining protective rubber is contacted with an acidic medium having oxidizing property for a long time, the viscous component in the protective rubber is easily decomposed, the adhesive property of the protective rubber body is reduced along with the decomposition of the viscous component, and the medium resistance of the lining protective rubber is also deteriorated.
Disclosure of Invention
In view of the above, the invention provides a double-layer composite pre-vulcanized butyl rubber plate with good adhesion performance and corrosion resistance.
The technical scheme of the invention is realized as follows: the invention provides a double-layer composite pre-vulcanized butyl rubber plate which comprises an adhesive layer and an anticorrosive layer, wherein the adhesive layer and the anticorrosive layer are compounded and matched together in a pressing mode, and the adhesive layer comprises the following components in parts by mass: 80-120 parts of natural rubber, 10-30 parts of butyl rubber, 10-50 parts of chloroprene rubber, 20-60 parts of argil, 3-15 parts of barium sulfate, 0.1-0.7 part of magnesium oxide, 2-8 parts of phenolic resin, 0.2-1 part of stearic acid and 1-2 parts of first accelerator, wherein the anticorrosive layer comprises the following components in parts by mass: 80-120 parts of chlorinated butyl rubber, 10-30 parts of barium sulfate, 1-2 parts of titanium dioxide, 0.5-1.5 parts of phenolic resin, 0.1-1 part of stearic acid, 2-10 parts of stabilizer and 1-4 parts of second accelerator.
On the basis of the technical scheme, preferably, the adhesive layer comprises the following components in parts by mass: 90-110 parts of natural rubber, 15-25 parts of butyl rubber, 20-40 parts of chloroprene rubber, 30-50 parts of argil, 5-12 parts of barium sulfate, 0.3-0.5 part of magnesium oxide, 3-7 parts of phenolic resin, 0.4-0.8 part of stearic acid and 1.2-1.8 parts of first accelerator, wherein the anticorrosive layer comprises the following components in parts by mass: 90-110 parts of chlorinated butyl rubber, 15-25 parts of barium sulfate, 1.2-1.8 parts of titanium dioxide, 0.8-1.2 parts of phenolic resin, 0.3-0.8 part of stearic acid, 4-8 parts of stabilizer and 2-3 parts of second accelerator.
On the basis of the technical scheme, preferably, the adhesive layer comprises the following components in parts by mass: 100 parts of natural rubber, 20 parts of butyl rubber, 30 parts of chloroprene rubber, 40 parts of argil, 9 parts of barium sulfate, 0.4 part of magnesium oxide, 5 parts of phenolic resin, 0.6 part of stearic acid and 1.5 parts of a first accelerator, wherein the anticorrosive layer comprises the following components in parts by mass: 100 parts of chlorinated butyl rubber, 20 parts of barium sulfate, 1.5 parts of titanium dioxide, 1 part of phenolic resin, 0.5 part of stearic acid, 6 parts of stabilizer and 2.5 parts of second accelerator.
On the basis of the above technical scheme, preferably, the first promoter consists of N, N-tetramethyldithiobisthiocarbonylamine and N-cyclohexyl-2-benzothiazylsulfenamide, and the ratio of N, N-tetramethyldithiobisthiocarbonylamine: the mass ratio of the N-cyclohexyl-2-benzothiazole sulfonamide is 2: 1.
Still further preferably, the second promoter consists of tellurium diethyldithiocarbamate and 2-mercaptobenzothiazole, the ratio of tellurium diethyldithiocarbamate: the mass ratio of the 2-mercaptobenzothiazole is 2: 1.
On the basis of the technical scheme, preferably, the stabilizer is a calcium zinc stabilizer.
On the basis of the technical scheme, preferably, the bonding layer further comprises 3-8 parts of asphalt.
On the basis of the above technical solution, preferably, the adhesive layer further includes 1 to 4 parts of epoxy resin.
On the basis of the above technical solution, preferably, the method for preparing the adhesive layer includes: plasticating natural rubber in an internal mixer for 10-20min at the plasticating temperature of 60-80 ℃, adding butyl rubber, chloroprene rubber, asphalt and epoxy resin, continuously banburying for 5-10min at the banburying temperature of 60-80 ℃, adding argil, barium sulfate, magnesium oxide, phenolic resin, stearic acid and a first accelerator after banburying is finished, continuously banburying for 1-2min at the banburying temperature of 60-80 ℃, after banburying is finished, thinly passing the obtained mixture on an open mill once, filtering to obtain sheets, and finally cooling, extruding and calendaring to obtain the bonding layer.
On the basis of the above technical solution, preferably, the preparation method of the anticorrosive layer includes: banburying the chlorinated butyl rubber in an internal mixer for 1-2min at the banburying temperature of 60-80 ℃, adding barium sulfate, titanium dioxide, phenolic resin and stearic acid, continuously banburying in the internal mixer for 4-8min at the banburying temperature of 60-80 ℃, adding a stabilizer and a second accelerator after banburying, continuously banburying for 1-2min at the banburying temperature of 60-80 ℃, after banburying, thinly passing the obtained mixture on an open mill once, filtering to obtain sheets, and finally cooling, extruding, calendering and forming to obtain the anticorrosive layer.
Compared with the prior art, the double-layer composite pre-vulcanized butyl rubber plate has the following beneficial effects:
(1) according to the invention, a double-layer rubber plate structure is adopted to replace a conventional single-layer rubber plate, the two layers of rubber plates respectively have corresponding bonding performance and corrosion resistance, the bonding layer is directly contacted with equipment to provide a good bonding effect, and the corrosion-resistant layer covers the bonding layer to play a role in corrosion resistance, so that the bonding layer is effectively prevented from being directly damaged by corrosive media, and the corrosion-resistant effect of the corrosion-resistant layer is better, therefore, compared with the conventional corrosion-resistant lining rubber plate, the double-layer rubber plate structure can not only improve the corrosion-resistant effect, but also improve the bonding effect;
(2) the anti-corrosion layer of the double-layer composite pre-vulcanized butyl rubber plate is easy to vulcanize, the composite butyl rubber plate is stable and reliable in quality, high in adhesion with metal and excellent in corrosion resistance, is particularly suitable for large steel lining corrosion prevention construction in site construction, has the capacity of resisting acid, alkali and salt, can be used in other corrosion prevention fields, is particularly suitable for project sites without vulcanization conditions, and greatly improves the construction efficiency;
(3) in order to further improve the double-layer composite effect, the bonding layer and the anticorrosive layer can be combined together more firmly, asphalt and epoxy resin are added into the bonding layer, the asphalt can effectively improve the bonding property of the bonding layer, meanwhile, the bonding effect has certain moisture resistance, the fluidity of the asphalt can be effectively improved after the epoxy resin and the asphalt are mixed, the bonding layer and the anticorrosive layer have better intersolubility, and the bonding layer and the anticorrosive layer can be bonded more firmly in the long-term use process.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a cross-sectional view of a two-layer composite pre-vulcanized butyl rubber sheet of the present invention.
In the figure: 1-adhesive layer, 2-anticorrosive layer.
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 obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1, the double-layer composite pre-vulcanized butyl rubber plate of the present invention includes an adhesive layer 1 and an anticorrosive layer 2, and the adhesive layer 1 and the anticorrosive layer 2 are bonded and compounded by pressing to obtain the double-layer composite pre-vulcanized butyl rubber plate.
Example 1
Preparing an adhesive layer, weighing 80 parts of natural rubber, plasticating the natural rubber in an internal mixer at 60 ℃ for 10min, weighing 10 parts of butyl rubber, 10 parts of chloroprene rubber, 4 parts of asphalt and 2 parts of epoxy resin, adding the mixture into the internal mixer to mix with the natural rubber, keeping the temperature at 60 ℃, banburying for 5min, then respectively weighing 20 parts of argil, 3 parts of barium sulfate, 0.1 part of magnesium oxide, 2 parts of phenolic resin, 0.2 part of stearic acid, 0.66 part of N, N-tetramethyl dithiobis-thiocarboxamine and 0.33 part of N-cyclohexyl-2-benzothiazole sulfenamide, keeping the temperature at 60 ℃, continuing banburying for 1min, after the banburying is finished, carrying out thin-pass treatment on the obtained mixture on an open mill once, filtering out pieces by a piece machine, finally cooling, extruding and calendaring to obtain the adhesive layer 1.
Preparing an anticorrosive layer, weighing 80 parts of chlorinated butyl rubber, keeping the temperature of the chlorinated butyl rubber in an internal mixer at 60 ℃, carrying out banburying for 1min, weighing 10 parts of barium sulfate, 1 part of titanium dioxide, 0.5 part of phenolic resin and 0.1 part of stearic acid, adding the mixture into the internal mixer to be mixed with the chlorinated butyl rubber, keeping the temperature at 60 ℃, carrying out banburying for 4min, weighing 2 parts of calcium-zinc stabilizer, 0.66 part of diethyl dithiocarbamate tellurium and 0.33 part of 2-mercaptobenzothiazole again after banburying, adding the mixture into the internal mixer, keeping the temperature at 60 ℃, continuing banburying for 1min, carrying out thin-pass treatment on the obtained mixture on an open mill once after banburying, filtering out pieces by using a filtering machine, cooling, extruding and calendaring to obtain the anticorrosive layer 2.
And (3) compressing and compounding the bonding layer 1 and the anticorrosive layer 2 in a rolling manner to obtain the double-layer compounded pre-vulcanized butyl rubber plate.
Example 2
Preparing an adhesive layer, weighing 90 parts of natural rubber, plasticating the natural rubber in an internal mixer at 65 ℃ for 12min, weighing 15 parts of butyl rubber, 20 parts of chloroprene rubber, 5 parts of asphalt and 3 parts of epoxy resin, adding the mixture into the internal mixer to mix with the natural rubber, keeping the temperature at 65 ℃ and banburying for 6min, then respectively weighing 30 parts of argil, 5 parts of barium sulfate, 0.3 part of magnesium oxide, 3 parts of phenolic resin, 0.4 part of stearic acid, 0.8 part of N, N-tetramethyl dithiobis-thiocarboxamide and 0.4 part of N-cyclohexyl-2-benzothiazole sulfenamide, keeping the temperature at 65 ℃, continuing banburying for 2min, after banburying, thinly processing the obtained mixture on an open mill once, filtering the mixture by a sheet machine to obtain sheets, and finally cooling, extruding and calendaring to obtain the adhesive layer 1.
Preparing an anticorrosive layer, weighing 90 parts of chlorinated butyl rubber, keeping the temperature of the chlorinated butyl rubber in an internal mixer at 65 ℃, carrying out banburying for 2min, weighing 15 parts of barium sulfate, 1.2 parts of titanium dioxide, 0.8 part of phenolic resin and 0.3 part of stearic acid, adding the weighed materials into the internal mixer to be mixed with the chlorinated butyl rubber, keeping the temperature at 65 ℃, carrying out banburying for 5min, weighing 4 parts of calcium-zinc stabilizer, 1.33 parts of diethyl dithiocarbamate tellurium and 0.66 part of 2-mercaptobenzothiazole again after banburying, adding the weighed materials into the internal mixer, keeping the temperature at 65 ℃, continuing banburying for 2min, carrying out thin-pass treatment on the obtained mixture on an open mill once after banburying, filtering out pieces by using a filtering machine, cooling, extruding and calendaring to obtain the anticorrosive layer 2.
And (3) compressing and compounding the bonding layer 1 and the anticorrosive layer 2 in a rolling manner to obtain the double-layer compounded pre-vulcanized butyl rubber plate.
Example 3
Preparing an adhesive layer, weighing 100 parts of natural rubber, plasticating the natural rubber in an internal mixer at 70 ℃ for 14min, weighing 20 parts of butyl rubber, 30 parts of chloroprene rubber, 6 parts of asphalt and 4 parts of epoxy resin, adding the mixture into the internal mixer to mix with the natural rubber, keeping the temperature at 70 ℃, banburying for 7min, then respectively weighing 40 parts of argil, 9 parts of barium sulfate, 0.4 part of magnesium oxide, 5 parts of phenolic resin, 0.6 part of stearic acid, 1 part of N, N-tetramethyl dithiobis-thiocarboxamine and 0.5 part of N-cyclohexyl-2-benzothiazole sulfenamide, keeping the temperature at 70 ℃, continuing banburying for 1min, after the banburying is finished, carrying out thin-pass treatment on the obtained mixture on an open mill once, filtering out pieces by a sheet machine, finally cooling, extruding and calendaring to obtain the adhesive layer 1.
Preparing an anticorrosive layer, weighing 100 parts of chlorinated butyl rubber, keeping the temperature of the chlorinated butyl rubber in an internal mixer at 70 ℃, carrying out banburying for 1min, weighing 20 parts of barium sulfate, 1.5 parts of titanium dioxide, 1 part of phenolic resin and 0.5 part of stearic acid, adding the mixture into the internal mixer to be mixed with the chlorinated butyl rubber, keeping the temperature at 70 ℃, carrying out banburying for 6min, weighing 6 parts of calcium-zinc stabilizer, 1.66 parts of diethyl dithiocarbamate tellurium and 0.83 part of 2-mercaptobenzothiazole again after banburying, adding the mixture into the internal mixer, keeping the temperature at 70 ℃, continuing banburying for 1min, carrying out thin-pass treatment on the obtained mixture on an open mill once after banburying, filtering out pieces by using a filtering machine, cooling, extruding and calendaring to obtain the anticorrosive layer 2.
And (3) compressing and compounding the bonding layer 1 and the anticorrosive layer 2 in a rolling manner to obtain the double-layer compounded pre-vulcanized butyl rubber plate.
Example 4
Preparing an adhesive layer, namely weighing 110 parts of natural rubber, plasticating the natural rubber in an internal mixer at 75 ℃ for 18min, weighing 25 parts of butyl rubber, 40 parts of chloroprene rubber, 7 parts of asphalt and 4 parts of epoxy resin, adding the mixture into the internal mixer to mix with the natural rubber, keeping the temperature at 75 ℃, banburying for 8min, then respectively weighing 50 parts of argil, 12 parts of barium sulfate, 0.5 part of magnesium oxide, 7 parts of phenolic resin, 0.8 part of stearic acid, 1.2 parts of N, N-tetramethyl dithiobis-thiocarboxamine and 0.6 part of N-cyclohexyl-2-benzothiazole sulfenamide, keeping the temperature at 75 ℃, continuing banburying for 2min, after the banburying is finished, thinly processing the obtained mixture on an open mill once, filtering out pieces by a sheet machine, finally cooling, extruding and calendaring to obtain the adhesive layer 1.
Preparing an anticorrosive layer, weighing 110 parts of chlorinated butyl rubber, keeping the temperature of the chlorinated butyl rubber in an internal mixer at 75 ℃, carrying out banburying for 2min, weighing 25 parts of barium sulfate, 1.8 parts of titanium dioxide, 1.2 parts of phenolic resin and 0.8 part of stearic acid, adding the mixture into the internal mixer to be mixed with the chlorinated butyl rubber, keeping the temperature at 75 ℃, carrying out banburying for 7min, weighing 8 parts of calcium-zinc stabilizer, 2 parts of diethyl dithiocarbamate tellurium and 1 part of 2-mercaptobenzothiazole again after banburying, adding the mixture into the internal mixer, keeping the temperature at 75 ℃, carrying out banburying for 2min continuously, carrying out banburying, carrying out thin-pass treatment on the obtained mixture on an open mill once, filtering out sheet discharge through a filtering machine, and then cooling, extruding and calendaring to obtain the anticorrosive layer 2.
And (3) compressing and compounding the bonding layer 1 and the anticorrosive layer 2 in a rolling manner to obtain the double-layer compounded pre-vulcanized butyl rubber plate.
Example 5
Preparing an adhesive layer, weighing 120 parts of natural rubber, plasticating the natural rubber in an internal mixer at 80 ℃ for 20min, weighing 30 parts of butyl rubber, 50 parts of chloroprene rubber, 8 parts of asphalt and 3 parts of epoxy resin, adding the mixture into the internal mixer to mix with the natural rubber, keeping the temperature at 80 ℃, banburying for 10min, then respectively weighing 60 parts of argil, 15 parts of barium sulfate, 0.7 part of magnesium oxide, 8 parts of phenolic resin, 1 part of stearic acid, 1.33 parts of N, N-tetramethyl dithiobis (thiocarboxamine) and 0.66 part of N-cyclohexyl-2-benzothiazole sulfenamide, keeping the temperature at 80 ℃, continuing banburying for 1min, after the banburying is finished, performing thin-pass treatment on the obtained mixture on an open mill once, filtering out pieces by a sheet machine, and finally cooling, extruding and calendaring to obtain the adhesive layer 1.
Preparing an anticorrosive layer, weighing 120 parts of chlorinated butyl rubber, keeping the temperature of the chlorinated butyl rubber in an internal mixer at 80 ℃, carrying out banburying for 1min, weighing 30 parts of barium sulfate, 2 parts of titanium dioxide, 1.5 parts of phenolic resin and 1 part of stearic acid, adding the mixture into the internal mixer to be mixed with the chlorinated butyl rubber, keeping the temperature of the internal mixer at 80 ℃, carrying out banburying for 8min, weighing 10 parts of calcium-zinc stabilizer, 2.66 parts of tellurium diethyldithiocarbamate and 1.33 parts of 2-mercaptobenzothiazole after the banburying, adding the mixture into the internal mixer, keeping the temperature at 80 ℃, carrying out the banburying for 1min continuously, carrying out the banburying, carrying out thin-pass treatment on the obtained mixture on an open mill once, filtering the mixture by using a filtering machine to obtain sheets, and then cooling, extruding and carrying out calender molding to obtain the anticorrosive layer.
And (3) compressing and compounding the bonding layer 1 and the anticorrosive layer 2 in a rolling manner to obtain the double-layer compounded pre-vulcanized butyl rubber plate.
Comparative example
A commercially available single-layer rubber-lining layer was used as a protective rubber for comparison.
The double-layer composite pre-vulcanized butyl rubber sheets prepared in the above examples 1 to 5 and the protective rubber sheet of the comparative example were subjected to corresponding performance tests, and the test results were as follows:
the thicknesses of the rubber sheets measured below were all 4mm
And (3) detecting the static voltage of the sample:
the electrostatic voltage resistance value of the sample is more than 3KV/mm, and the insulation requirement of the anticorrosion equipment can be met.
The physical properties are detected, an electronic tensile testing machine is adopted for experimental testing, and the results are as follows:
the double-layer composite pre-vulcanized butyl rubber plate and the rubber lining plate of the comparative example are subjected to tensile test from the thickness direction until the rubber is torn, and the tensile force is detected, wherein the detection results are as follows:
the acid and alkali resistance tests were performed on the anticorrosive layer of the two-layer compounded pre-vulcanized butyl rubber sheet of examples 1 to 5 of the present invention and the rubber-lined sheet of the comparative example, respectively, and the soaking tests were performed in a constant-temperature water bath tank, in which 25% sulfuric acid, 40% sulfuric acid, and 50% sulfuric acid were soaked for 168 hours, with the following results:
the double-layer pre-vulcanized butyl rubber plate is prepared by separating the adhesive layer and the anticorrosive layer, has good adhesive property and anticorrosive property after being compounded, has stable and reliable product quality, high adhesion with metal and strong corrosion resistance, is particularly suitable for large steel lining anticorrosive construction in site construction, has the capacity of resisting acid, alkali and salt, can be used in other anticorrosive fields, is particularly suitable for project sites without vulcanization conditions, and greatly improves the construction efficiency.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a double-deck compound prevulcanized butyl rubber board which characterized in that, includes adhesive linkage (1) and anticorrosive coating (2), adhesive linkage (1) and anticorrosive coating (2) are through compressing tightly compound, adhesive linkage (1) calculates according to the part by mass, includes following component: 80-120 parts of natural rubber, 10-30 parts of butyl rubber, 10-50 parts of chloroprene rubber, 20-60 parts of argil, 3-15 parts of barium sulfate, 0.1-0.7 part of magnesium oxide, 2-8 parts of phenolic resin, 0.2-1 part of stearic acid and 1-2 parts of first accelerator, wherein the anticorrosive layer (2) comprises the following components in parts by mass: 80-120 parts of chlorinated butyl rubber, 10-30 parts of barium sulfate, 1-2 parts of titanium dioxide, 0.5-1.5 parts of phenolic resin, 0.1-1 part of stearic acid, 2-10 parts of stabilizer and 1-4 parts of second accelerator.
2. The double-layer composite pre-vulcanized butyl rubber sheet according to claim 1, wherein the adhesive layer (1) comprises the following components in parts by weight: 90-110 parts of natural rubber, 15-25 parts of butyl rubber, 20-40 parts of chloroprene rubber, 30-50 parts of argil, 5-12 parts of barium sulfate, 0.3-0.5 part of magnesium oxide, 3-7 parts of phenolic resin, 0.4-0.8 part of stearic acid and 1.2-1.8 parts of first accelerator, wherein the anticorrosive layer (2) comprises the following components in parts by mass: 90-110 parts of chlorinated butyl rubber, 15-25 parts of barium sulfate, 1.2-1.8 parts of titanium dioxide, 0.8-1.2 parts of phenolic resin, 0.3-0.8 part of stearic acid, 4-8 parts of stabilizer and 2-3 parts of second accelerator.
3. The two-layer composite pre-vulcanized butyl rubber sheet of claim 1, wherein: the adhesive layer (1) comprises the following components in parts by weight: 100 parts of natural rubber, 20 parts of butyl rubber, 30 parts of chloroprene rubber, 40 parts of argil, 9 parts of barium sulfate, 0.4 part of magnesium oxide, 5 parts of phenolic resin, 0.6 part of stearic acid and 1.5 parts of a first accelerator, wherein the anticorrosive layer (2) comprises the following components in parts by mass: 100 parts of chlorinated butyl rubber, 20 parts of barium sulfate, 1.5 parts of titanium dioxide, 1 part of phenolic resin, 0.5 part of stearic acid, 6 parts of stabilizer and 2.5 parts of second accelerator.
4. The two-layer composite pre-vulcanized butyl rubber sheet of claim 1, wherein: the first promoter consists of N, N-tetramethyl dithiobisthiocarbonylamine and N-cyclohexyl-2-benzothiazyl sulfenamide, wherein the molar ratio of the N, N-tetramethyl dithiobisthiocarbonylamine: the mass ratio of the N-cyclohexyl-2-benzothiazole sulfonamide is 2: 1.
5. The two-layer composite pre-vulcanized butyl rubber sheet of claim 1 wherein the second accelerator is comprised of tellurium diethyldithiocarbamate and 2-mercaptobenzothiazole, the ratio of tellurium diethyldithiocarbamate: the mass ratio of the 2-mercaptobenzothiazole is 2: 1.
6. The double-layer composite pre-vulcanized butyl rubber sheet of claim 1, wherein the stabilizer is a calcium zinc stabilizer.
7. The two-ply composite pre-vulcanized butyl rubber sheet according to claim 1, wherein the adhesive layer (1) further comprises 3 to 8 parts of asphalt.
8. The two-ply composite pre-vulcanized butyl rubber sheet according to claim 7 wherein the adhesive layer further comprises 1 to 4 parts of an epoxy resin.
9. The double-layer composite pre-vulcanized butyl rubber sheet according to any one of claims 1 to 8, wherein the adhesive layer (1) is prepared by a method comprising: plasticating natural rubber in an internal mixer for 10-20min at the plasticating temperature of 60-80 ℃, adding butyl rubber, chloroprene rubber, asphalt and epoxy resin, continuously banburying for 5-10min at the banburying temperature of 60-80 ℃, adding argil, barium sulfate, magnesium oxide, phenolic resin, stearic acid and a first accelerator after banburying is finished, continuously banburying for 1-2min at the banburying temperature of 60-80 ℃, after banburying is finished, thinly passing the obtained mixture on an open mill once, filtering to obtain sheets, and finally cooling, extruding and calendaring to obtain the bonding layer (1).
10. The double-layer composite pre-vulcanized butyl rubber sheet according to any one of claims 1 to 8, wherein the anticorrosive layer (2) is prepared by a method comprising: banburying butyl chloride rubber in an internal mixer for 1-2min at the banburying temperature of 60-80 ℃, adding barium sulfate, titanium dioxide, phenolic resin and stearic acid, continuously banburying in the internal mixer for 4-8min at the banburying temperature of 60-80 ℃, adding a stabilizer and a second accelerator after banburying, continuously banburying for 1-2min at the banburying temperature of 60-80 ℃, after banburying, thinly passing the obtained mixture on an open mill once, filtering to obtain sheets, and finally cooling, extruding, calendering and molding to obtain the anticorrosive layer (2).
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