CN112708213A - Waterproof sealing gasket material for submarine shield tunnel - Google Patents

Waterproof sealing gasket material for submarine shield tunnel Download PDF

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CN112708213A
CN112708213A CN202011538422.6A CN202011538422A CN112708213A CN 112708213 A CN112708213 A CN 112708213A CN 202011538422 A CN202011538422 A CN 202011538422A CN 112708213 A CN112708213 A CN 112708213A
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shield tunnel
gasket material
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submarine
sealing gasket
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沈水龙
王泽念
张宁
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Shantou University
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • 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
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/20—Compounding polymers with additives, e.g. colouring
    • C08J3/205—Compounding polymers with additives, e.g. colouring in the presence of a continuous liquid phase
    • C08J3/2053—Compounding polymers with additives, e.g. colouring in the presence of a continuous liquid phase the additives only being premixed with a liquid phase
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/16—Ethene-propene or ethene-propene-diene copolymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2491/00—Characterised by the use of oils, fats or waxes; Derivatives thereof
    • C08J2491/06—Waxes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2217—Oxides; Hydroxides of metals of magnesium
    • C08K2003/2224—Magnesium hydroxide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2227—Oxides; Hydroxides of metals of aluminium
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/002—Physical properties
    • C08K2201/003—Additives being defined by their diameter
    • 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
    • C08L2201/02—Flame or fire retardant/resistant

Abstract

The invention relates to the field of shield tunnel segment seam waterproof, and discloses a waterproof sealing gasket material for a submarine shield tunnel, which comprises the following components in percentage by weight: 100phr of raw rubber, 40-80 phr of carbon black, 15-30 phr of calcium carbonate, 50-90 phr of 300# paraffin oil, 10-20 phr of calcium oxide, 1-4 phr of sulfur, 2-4 phr of anti-aging agent, 3-9 phr of accelerator and 30-50 phr of nano hydroxide, has high corrosion resistance to seawater, and is suitable for complex environments such as underground water and seawater conditions.

Description

Waterproof sealing gasket material for submarine shield tunnel
Technical Field
The invention relates to the field of shield tunnel segment seam waterproof, in particular to a waterproof sealing gasket material for a submarine shield tunnel.
Background
In recent years, a large number of submarine tunnels have been put into construction and operation in order to enhance economy and traffic construction in coastal areas. The shield method has the advantages of high mechanization degree, high construction efficiency, small environmental disturbance and the like, thereby being widely applied to the construction of submarine tunnels. In the process of submarine tunnel construction and operation, tunnel sealing and water proofing are a crucial scientific and engineering problem. At present, the shield sealing and water proofing mainly depend on an elastic sealing gasket between shield segments, the main elastic sealing gasket material comprises an EPDM rubber sealing gasket and a water absorption expansion material, and the EPDM sealing gasket is most widely applied. EPDM fills the space between the pipe pieces under the extrusion effect of the shield pipe pieces, prevents seawater or underground water from permeating into the tunnel, and plays a role in sealing and waterproofing. Along with the development of submarine tunnels in the directions of large burial depth, large diameter and long distance, the waterproof requirements of the tunnels are higher and higher. However, the existing EPDM is mainly suitable for the conventional underground shield tunnel, and the underground water environment has weak erosion and low water pressure. In the high-water-pressure and high-corrosion seawater environment of the submarine tunnel, the creep-resistant mechanical property of the conventional EPDM sealing gasket material is easily and rapidly attenuated, the EPDM generates creep and the stress level is rapidly reduced, so that the high-pressure seawater cannot be prevented from being corroded and infiltrated. In addition, the EPDM sealing gasket material is rapidly aged and hardened due to high temperature and harmful gas generated by tunnel fire, the mechanical property is reduced, and then the water seepage and water gushing of the submarine tunnel are caused, and the tunnel safety is threatened. At present, the national standard GB 18173.4-2010 only considers mechanical property, compression property and aging property, and does not consider the flame retardance of the sealing gasket. Therefore, the mechanical property, creep resistance and flame retardance of the EPDM sealing gasket are improved, and the EPDM sealing gasket has important significance for safe operation of a submarine tunnel.
Through the search of the prior art, the tunnel sealing gasket is found to be: a tunnel segment joint waterproof ethylene propylene diene monomer rubber sealing gasket and a preparation method (CN201610414449.1) thereof. The existing shield tunnel sealing gasket improves the corrosion resistance, wear resistance, high temperature resistance and impact resistance of the sealing gasket by adding inorganic minerals, and improves the compatibility of the inorganic minerals and a rubber matrix by adding organic reagents, thereby improving the performance of the sealing gasket. Wherein the inorganic mineral comprises high mineral water quenching slag, titanium carbide, aluminum magnesium spinel and silicon boride, and the organic reagent comprises sodium cocoyl methyl taurate, dodecyl phosphate betaine, glucosamino dextran, tallow amine polyoxyethylene ether, etc.
Although the sealing gasket material has excellent characteristics of corrosion resistance, wear resistance, high temperature resistance, impact resistance and the like, the sealing gasket material has high requirements on inorganic mineral processing technology and complex technology, and simultaneously, the added organic reagent can reduce the strength of a rubber matrix, so that the sealing gasket material cannot be used as a sealing gasket material for a submarine tunnel.
Disclosure of Invention
The invention aims to solve the problems that the existing EPDM sealing gasket material cannot adapt to a high-water-pressure and high-corrosion seawater environment, the creep resistance mechanical property is easy to quickly attenuate, and the corrosion and infiltration of high-pressure seawater cannot be prevented.
In order to solve the technical problems, the invention adopts the following technical scheme:
a waterproof sealing gasket material for a submarine shield tunnel comprises the following components in parts by weight:
Figure BDA0002853854070000021
preferably, the composition comprises the following components in percentage by weight:
Figure BDA0002853854070000022
Figure BDA0002853854070000031
preferably, in the nano hydroxide colloid, the nano hydroxide includes one or more of nano magnesium hydroxide and nano aluminum hydroxide.
Preferably, the average diameter of the nano hydroxide colloid is 100-500 nm.
Preferably, the accelerator comprises zinc oxide and stearic acid, and the mass ratio of the zinc oxide to the stearic acid is 2-6: 1-3.
The zinc oxide is prepared by an indirect method to obtain active zinc oxide, and the content is more than or equal to 99.7 percent. The stearic acid has a density of 0.94kg/m3The melting point was 59.4 ℃. When zinc oxide and stearic acid are used together as a vulcanization accelerator, a slight excess of zinc oxide is advantageous for accelerating the vulcanization reaction and increasing the crosslinking density of the rubber.
Preferably, the calcium carbonate is light calcium carbonate, and the average particle size is 1000-2000 meshes; the average particle size of the calcium oxide is 2000-3000 meshes.
The content of calcium oxide is more than or equal to 85 percent.
Preferably, the 300# paraffin oil has a kinematic viscosity of 68-75 m at 40 ℃ in a test environment2(s) density 0.85kg/m3Liquid paraffin oil of (2).
Preferably, the raw rubber is 3092M; the carbon black is N550, the residue of a 325-mesh sieve is less than or equal to 0.1 percent, and the iodine absorption value is 43-45 g/kg; the anti-aging agent is anti-aging agent 4010.
The density of the anti-aging agent 4010 is 1.3kg/m3The melting point is 108 DEG C
Preferably, the nano hydroxide colloid is obtained by premixing nano hydroxide and 300# paraffin oil according to a mass ratio of 100: 20-40.
Mixing in an ultrasonic mixer with model CL-80 and rated power of 80 w. Mixing for 15-30 min, and standing for 24 hours.
Compared with the prior art, the implementation of the invention has the following beneficial effects:
(1) according to the invention, the nano hydroxide and the No. 300 paraffin oil colloid material are mixed by ultrasonic waves and are kept stand for 24 hours, so that the surface tension of the nano material is reduced, the nano hydroxide is uniformly mixed in NPE-EPDM, the agglomeration phenomenon of the nano material is weakened, and the compatibility of the nano hydroxide and an NPE-EPDM matrix is improved; meanwhile, the nano hydroxide is decomposed into water and metal oxide by heat, is pollution-free, can be used as a green flame retardant, and improves the flame retardance of the EPDM.
(2) Compared with the common EPDM, the NPE-EPDM can greatly improve the creep resistance and the elongation at break of the sealing gasket by only using a small amount of nano hydroxide, enhances the waterproof performance of the sealing gasket and has low cost.
(3) The NPE-EPDM sealing gasket is simple in production process, high in feasibility, good in extrusion molding and stable.
(4) The NPE-EPDM sealing gasket material has high erosion resistance to seawater, and is suitable for complex environments such as underground water and seawater conditions.
Drawings
FIG. 1 is a flow chart of preparation and screening of the NPE-EPDM material of the submarine shield tunnel sealing gasket of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
Example 1
The embodiment provides a waterproof sealing gasket NPE-EPDM material for a submarine shield tunnel, which comprises the following components in parts by weight:
Figure BDA0002853854070000041
Figure BDA0002853854070000051
wherein 3092M is selected as raw rubber; selecting N550 as carbon black, wherein the residue of a 325-mesh sieve is less than or equal to 0.1 percent, and the iodine absorption value is 43-45 g/kg; the calcium carbonate is light calcium carbonate with the average particle size of 1250 meshes; 300# Paraffin oil has a kinematic viscosity (40 ℃) of 73m2S, density 0.85kg/m3Paraffin oil of (a); the content of calcium oxide is more than or equal to 85 percent, and the average particle size is 2500 meshes; the zinc oxide is active zinc oxide prepared by an indirect method, and the content is more than or equal to 99.7 percent; stearic acid has a density of 0.94kg/m3Stearic acid, melting point 59.4 ℃; the antioxidant is selected from 4010, and density of 1.3kg/m3Melting point 108 ℃; the average diameter of the nano magnesium hydroxide is 200 nm.
As shown in fig. 1, is prepared by the following method, comprising the following steps:
A. preparing plasticated raw rubber, putting the raw rubber into an X (S) N20X32 plasticating machine, and plasticating for 15min at 150 ℃ to obtain the plasticated raw rubber. X (S) N20X32 plasticator has a total banburying volume of 20L and a rated power of a driving motor of 30 kw.
B. Preparing a mixture A, stirring and mixing the plasticated raw rubber, carbon black N550, calcium carbonate, 300# paraffin oil, zinc oxide, stearic acid, calcium oxide and an anti-aging agent according to the weight ratio of 100:70:20:50:5:1:10:2, mixing in an LR-LJL-380 mixing mill at the working voltage of 380V and the rated power of 3.5kw for 20min, and cooling to room temperature (about 20-30 ℃) to obtain the mixture A.
C. Preparing nano hydroxide colloid, placing nano hydroxide (nano magnesium hydroxide) and 300# paraffin oil in a CL-80 ultrasonic mixer according to a weight ratio of 100:20, wherein the rated power is 80w, mixing for 20min, and standing for 24 hours to reduce the surface tension of the nano hydroxide to obtain the nano magnesium hydroxide colloid;
D. mixing, namely uniformly mixing the mixture A and the nano hydroxide colloid on the mixing roll according to a ratio to obtain a mixture B;
E. and (2) cooling and vulcanizing, cooling the mixture B to room temperature (about 20-30 ℃), mixing the mixture B with 1phr of sulfur uniformly on the mixing roll, vulcanizing on a vulcanizing machine, wherein the vulcanization temperature is 165 ℃, the vulcanization time is 10min, and then standing at room temperature (about 20-30 ℃) for 24 hours to reduce the residual stress of the sample, thereby obtaining the NPE-EPDM used as the waterproof sealing gasket material for the shield tunnel.
Example 2
The embodiment provides a waterproof sealing gasket NPE-EPDM material for a submarine shield tunnel, which comprises the following components in parts by weight:
Figure BDA0002853854070000061
wherein 3092M is selected as raw rubber; selecting N550 as carbon black, wherein the residue of a 325-mesh sieve is less than or equal to 0.1 percent, and the iodine absorption value is 43-45 g/kg; the calcium carbonate is light calcium carbonate with the average granularity of 2000 meshes; 300# Paraffin oil with a kinematic viscosity (40 ℃) of 75m2S, densityIs 0.85kg/m3Paraffin oil of (a); the content of calcium oxide is more than or equal to 85 percent, and the average particle size is 3000 meshes; the zinc oxide is active zinc oxide prepared by an indirect method, and the content is more than or equal to 99.7 percent; stearic acid has a density of 0.94kg/m3Stearic acid, melting point 59.4 ℃; the antioxidant is selected from 4010, and density of 1.3kg/m3Melting point 108 ℃; the average diameter of the nano magnesium hydroxide colloid and the nano aluminum hydroxide colloid is 500 nm.
The same preparation method as in example 1 was used, except that the weight ratio of the nano hydroxide (nano magnesium hydroxide: nano aluminum hydroxide ═ 1:1) to the 300# paraffin oil premix in step C was 100: and 40, obtaining a waterproof sealing gasket material NPE-EPDM of the submarine shield tunnel.
Example 3
The embodiment provides a waterproof sealing gasket NPE-EPDM material for a submarine shield tunnel, which comprises the following components in parts by weight:
Figure BDA0002853854070000071
wherein 3092M is selected as raw rubber; selecting N550 as carbon black, wherein the residue of a 325-mesh sieve is less than or equal to 0.1 percent, and the iodine absorption value is 43-45 g/kg; the calcium carbonate is light calcium carbonate with the average particle size of 1000 meshes; the 300# paraffin oil has a kinematic viscosity (40 ℃) of 68m2S, density 0.85kg/m3Paraffin oil of (a); the content of calcium oxide is more than or equal to 85 percent, and the average particle size is 2000 meshes; the zinc oxide is active zinc oxide prepared by an indirect method, and the content is more than or equal to 99.7 percent; stearic acid has a density of 0.94kg/m3Stearic acid, melting point 59.4 ℃; the antioxidant is selected from 4010, and density of 1.3kg/m3Melting point 108 ℃; the average diameter of the nano aluminum hydroxide is 100 nm.
The same preparation method as in example 1 was adopted, wherein the weight ratio of the nano hydroxide (nano aluminum hydroxide) to the 300# paraffin oil premix in step C was 100: 30, obtaining a waterproof sealing gasket material NPE-EPDM for the shield tunnel.
Comparative example 1
The same formulation ratio and preparation method as those of example 1 were adopted, except that the amount of nano magnesium hydroxide colloid was 0phr, to obtain a waterproof gasket material for a shield tunnel at the sea bottom.
Comparative example 2
The same formulation ratio and preparation method as in example 1 were used, except that the amount of nano magnesium hydroxide colloid was 50phr, to obtain a waterproof gasket material for a shield tunnel.
Comparative example 3
The same formulation ratio and preparation method as those of example 1 were adopted, except that the amount of nano magnesium hydroxide colloid was 120phr, to obtain a waterproof gasket material for a shield tunnel at the sea bottom.
Comparative example 4
The same formulation ratio and preparation method as in example 1 were used, except that zinc oxide alone was used as the accelerator, the amount added was 6phr, and stearic acid was not added, to obtain a waterproof gasket material for a shield tunnel.
Comparative example 5
The same formulation ratio and preparation method as in example 1 were used, except that stearic acid alone was used as an accelerator, the amount added was 6phr, and zinc oxide was not added, to obtain a waterproof gasket material for a shield tunnel.
Effect example 1
The performance test of the materials obtained in examples 1 to 3 and comparative examples 1 to 5 includes the following steps:
step 1: preparing artificial seawater. 30g NaCl and 0.08g NaHCO were added to 1L of distilled water in this order3、0.04g KBr、0.41g CaCl2·2H2O、1.47gNa2SO40.25g KCl and 1.87g MgCl2·6H2And O, uniformly stirring for later use. NaCl and NaHCO are used3、KBr、CaCl2·2H2O、Na2SO4KCl and MgCl2·6H2The O grades are all analytically pure.
Step 2: the samples of examples 1 to 3 and comparative examples 1 to 5 were soaked in distilled water or artificial seawater at 80 ℃ for 120 hours. Three tests are counted, namely an original sample group, a distilled water soaking group and an artificial seawater soaking group.
And step 3: measuring the mechanical properties of the sample. The hardness, tensile strength and elongation at break of the test samples are respectively tested according to GB/T531.1-2008 and GB/T528-2009, 3 test samples are tested, and the average value is taken as the final result. The test specimens were cut into type II dumbbell test specimens (75X 4X 2 mm) with a type II cutter3L multiplied by W multiplied by H), the hardness was measured using Shore hardness, the tensile strength and elongation at break were measured using a universal tensile machine, and the tensile rate was 500 mm/min. The Shore durometer model is LX-A, and the measuring range is 0-100 Shore A. The model of the universal tensile machine is TF-101, and the maximum load is 20 kN.
And 4, step 4: the flame retardant properties of the test specimens were measured. The samples were first cut (150X 6.5X 3 mm) according to GB/T10707-3L × W × H), the oxygen index of the test specimen was measured using a vertical method flame retardancy tester, and 3 test specimens were tested, and the average value thereof was taken as the final result. The type of the vertical flame retardant property tester is LFY-601A.
The test results are shown in table 1.
TABLE 1
Figure BDA0002853854070000091
Figure BDA0002853854070000101
As can be seen from table 1:
1. the NPE-EPDM of the embodiments 1-3 has excellent mechanical properties (hardness, tensile strength and elongation at break), and in the distilled water immersion test sample and the artificial seawater immersion test sample, all the mechanical properties can still be kept at a low reduction level, so that the NPE-EPDM is favorable for the waterproof sealing of the submarine shield tunnel. Among them, using a part of nano aluminum hydroxide instead of nano magnesium hydroxide, it was found that the tensile strength and hardness of the NPE-EPDM of example 2 were increased, but the elongation at break was decreased. While the NPE-EPDM of example 1 has a slight decrease in hardness compared with example 2, the tensile strength and elongation at break are better, the comprehensive performance is better, and the hardness is not higher, the better, because the NPE-EPDM is an elastic waterproof sealing material, the elasticity is easily decreased when the hardness is too high, and the sealing effect is affected. On the basis of meeting the national standard GB 18173.4-2010 hardness requirement (60-70 Shore A), the tensile strength and the elongation at break are preferably considered, and the embodiment 1 is considered to be a preferred embodiment.
2. Compared with the conventional EPDM (comparative example 1), the NPE-EPDM of examples 1-3 has greatly improved mechanical properties (hardness, tensile strength and elongation at break) and flame retardant property. Particularly, in a distilled water soaking sample and an artificial seawater soaking sample, the mechanical property of the conventional EPDM (comparative example 1) is remarkably reduced, and the EPDM can not be used for waterproof sealing of a submarine shield tunnel. The NPE-EPDM of examples 1-3 also has significantly enhanced water erosion resistance.
3. Excessive addition of the nano hydroxide colloid (comparative examples 2 and 3) caused a significant increase in hardness, but the increase in elongation at break was small, and even the tensile strength began to show a tendency to decrease, and at 120phr addition (comparative example 3), the tensile strength was even lower than that of the conventional EPDM material (comparative example 1).
4. Compared with NPE-EPDM (comparative examples 4 and 5) prepared by using a single accelerator, the NPE-EPDM of examples 1-3 prepared by using zinc oxide and stearic acid as the accelerators in a compounding way has obviously improved mechanical properties.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, therefore, the present invention is not limited by the appended claims.

Claims (9)

1. The waterproof sealing gasket material for the submarine shield tunnel is characterized by comprising the following components in parts by weight:
Figure FDA0002853854060000011
2. the waterproof gasket material for the submarine shield tunnel according to claim 1, comprising the following components in parts by weight:
Figure FDA0002853854060000012
3. the waterproof gasket material for a shield tunnel according to claim 1, wherein in the nano hydroxide colloid, the nano hydroxide comprises one or more of nano magnesium hydroxide and nano aluminum hydroxide.
4. The waterproof gasket material for the shield tunnel of the sea bottom as claimed in claim 1, wherein the average diameter of said nano hydroxide colloid is 100 to 500 nm.
5. The waterproof gasket material for the submarine shield tunnel according to claim 1, wherein the accelerator comprises zinc oxide and stearic acid, and the mass ratio of the zinc oxide to the stearic acid is 2-6: 1-3.
6. The waterproof gasket material for the submarine shield tunnel according to claim 1, wherein the calcium carbonate is light calcium carbonate, and the average particle size is 1000-2000 mesh; the average particle size of the calcium oxide is 2000-3000 meshes.
7. The waterproof gasket material for the submarine shield tunnel according to claim 1, wherein the 300# paraffin oil has a kinematic viscosity of 68-75 m at 40 ℃ in a test environment2(s) density 0.85kg/m3Liquid paraffin oil of (2).
8. The waterproof gasket material for the submarine shield tunnel according to claim 1, wherein the raw rubber is 3092M; the carbon black is N550, the residue of a 325-mesh sieve is less than or equal to 0.1 percent, and the iodine absorption value is 43-45 g/kg; the anti-aging agent is anti-aging agent 4010.
9. The waterproof sealing gasket material for the submarine shield tunnel according to claim 1, wherein the nano hydroxide colloid is obtained by premixing nano hydroxide and 300# paraffin oil according to a mass ratio of 100: 20-40.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112662081A (en) * 2020-12-23 2021-04-16 汕头大学 Preparation method of waterproof sealing gasket material for submarine shield tunnel

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101704976A (en) * 2009-11-27 2010-05-12 北京化工大学 Low smoke halogen-free flame retardant ethylene-propylene-diene rubber and preparation method by extrusion molding thereof
CN102002192A (en) * 2010-11-01 2011-04-06 河北华虹工程材料有限公司 Engineering rubber material with antibacterial and mildew-proof performance and preparation process thereof
CN110003575A (en) * 2019-02-22 2019-07-12 安徽立信橡胶科技有限公司 A kind of ethylene propylene diene rubber of halogen-free flameproof
CN110240760A (en) * 2019-07-04 2019-09-17 青岛铁路橡胶厂 A kind of flame-resistant insulation ethylene propylene diene rubber hose compositions and preparation method thereof
CN209908535U (en) * 2019-05-24 2020-01-07 西南交通大学 Waterproof elastic sealing gasket for shield tunnel segment joint

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101704976A (en) * 2009-11-27 2010-05-12 北京化工大学 Low smoke halogen-free flame retardant ethylene-propylene-diene rubber and preparation method by extrusion molding thereof
CN102002192A (en) * 2010-11-01 2011-04-06 河北华虹工程材料有限公司 Engineering rubber material with antibacterial and mildew-proof performance and preparation process thereof
CN110003575A (en) * 2019-02-22 2019-07-12 安徽立信橡胶科技有限公司 A kind of ethylene propylene diene rubber of halogen-free flameproof
CN209908535U (en) * 2019-05-24 2020-01-07 西南交通大学 Waterproof elastic sealing gasket for shield tunnel segment joint
CN110240760A (en) * 2019-07-04 2019-09-17 青岛铁路橡胶厂 A kind of flame-resistant insulation ethylene propylene diene rubber hose compositions and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112662081A (en) * 2020-12-23 2021-04-16 汕头大学 Preparation method of waterproof sealing gasket material for submarine shield tunnel
CN112662081B (en) * 2020-12-23 2023-12-12 汕头大学 Preparation method of waterproof sealing gasket material for submarine shield tunnel

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