CN114015167A - Preparation method of rubber waterstop and rubber waterstop - Google Patents
Preparation method of rubber waterstop and rubber waterstop Download PDFInfo
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- CN114015167A CN114015167A CN202111366848.2A CN202111366848A CN114015167A CN 114015167 A CN114015167 A CN 114015167A CN 202111366848 A CN202111366848 A CN 202111366848A CN 114015167 A CN114015167 A CN 114015167A
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 121
- 239000005060 rubber Substances 0.000 title claims abstract description 121
- 238000002360 preparation method Methods 0.000 title description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 49
- 239000000463 material Substances 0.000 claims abstract description 43
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 30
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 30
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 25
- 239000002250 absorbent Substances 0.000 claims abstract description 20
- 239000011347 resin Substances 0.000 claims abstract description 20
- 229920005989 resin Polymers 0.000 claims abstract description 20
- 239000011787 zinc oxide Substances 0.000 claims abstract description 19
- 229920002943 EPDM rubber Polymers 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 18
- 150000002978 peroxides Chemical class 0.000 claims abstract description 17
- 239000004014 plasticizer Substances 0.000 claims abstract description 17
- 230000003449 preventive effect Effects 0.000 claims abstract description 17
- 239000004902 Softening Agent Substances 0.000 claims abstract description 12
- 239000000440 bentonite Substances 0.000 claims abstract description 11
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 11
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 11
- 239000004945 silicone rubber Substances 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims description 39
- 238000004073 vulcanization Methods 0.000 claims description 35
- 239000006229 carbon black Substances 0.000 claims description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
- 239000002041 carbon nanotube Substances 0.000 claims description 15
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 15
- 229910021485 fumed silica Inorganic materials 0.000 claims description 15
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 8
- MIMDHDXOBDPUQW-UHFFFAOYSA-N dioctyl decanedioate Chemical group CCCCCCCCOC(=O)CCCCCCCCC(=O)OCCCCCCCC MIMDHDXOBDPUQW-UHFFFAOYSA-N 0.000 claims description 8
- 125000002081 peroxide group Chemical group 0.000 claims description 8
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 8
- 229920001467 poly(styrenesulfonates) Polymers 0.000 claims description 8
- 229940006186 sodium polystyrene sulfonate Drugs 0.000 claims description 8
- 238000005303 weighing Methods 0.000 claims description 8
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 7
- 238000000748 compression moulding Methods 0.000 claims description 7
- 238000010030 laminating Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 2
- 238000013461 design Methods 0.000 abstract description 2
- 238000002791 soaking Methods 0.000 abstract description 2
- 230000003014 reinforcing effect Effects 0.000 description 11
- 206010063659 Aversion Diseases 0.000 description 5
- 238000010074 rubber mixing Methods 0.000 description 5
- 238000013022 venting Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
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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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
- E04B1/6803—Joint covers
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
- E04B1/6806—Waterstops
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Electromagnetism (AREA)
- Physics & Mathematics (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
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Abstract
The invention provides a rubber water stop, which comprises a horizontal main body of the rubber water stop, wherein a plurality of groups of vertical auxiliary bodies are arranged on the horizontal main body in a central symmetry manner, a central through hole is arranged at the middle point of the horizontal main body, a left end through hole and a right end through hole are respectively arranged at the extending tail end of the horizontal main body, and the vertical auxiliary bodies are symmetrically arranged at two sides of the central through hole; the rubber waterstop is of an integrally formed structure and is prepared from the following raw materials in parts by weight: 100-120 parts of ethylene propylene diene monomer, 10-20 parts of low-phenyl silicone rubber, 15-25 parts of bentonite, 15-20 parts of water-absorbent resin, 5-8 parts of peroxide cross-linking agent, 15-20 parts of reinforcing agent, 3-5 parts of zinc oxide, 5-10 parts of softening agent, 1-2 parts of vulcanizing agent, 1-2 parts of anti-aging agent, 1-2 parts of accelerator, 1-2 parts of mildew preventive and 1-2 parts of plasticizer. The rubber water stop of the invention can not shift, deform and curl; the material design makes it have good tear resistance, low temperature resistance, plasticity and repeated soaking expansibility.
Description
Technical Field
The invention belongs to the technical field of chemical industry, and particularly relates to a preparation method of a rubber water stop and the rubber water stop.
Background
The rubber water stop is made of a material which has the characteristics of rubber products and also has the function of stopping water by automatically expanding when meeting water. The method is widely applied to construction joints, expansion joints and cracks of civil air defense, subways, tunnels, sewage treatment projects, swimming pools and other concrete projects. The rubber waterstop is made up of natural rubber and synthetic rubber through mixing with assistants and filler, plastifying, pugging and press shaping.
The traditional rubber water stop has the defects that the traditional rubber water stop is difficult to position due to the water stop requirement and the nail nailing or perforation is forbidden in the installation process, the common quality problems such as displacement, deformation, curling and the like are easy to occur during the concrete pouring, and the water stop and the sealing effect are greatly reduced. In addition, the traditional rubber water stop has to be improved in tear resistance, low temperature resistance, long-term corrosion resistance and the like.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the technical problems in the prior art, the invention provides a rubber waterstop and a preparation method thereof, wherein the rubber waterstop overcomes the defects of the prior art, and the rubber waterstop is designed into an integrally formed structure to ensure that the rubber waterstop cannot shift, deform and curl; the material design makes it have good tear resistance, low temperature resistance, plasticity and repeated soaking expansibility.
The technical scheme adopted by the invention is as follows:
a rubber water stop comprises a horizontal main body of the rubber water stop, wherein a plurality of groups of vertical auxiliary bodies are arranged on the horizontal main body in a central symmetry manner, a central through hole is formed in the middle position of the horizontal main body, a left end through hole and a right end through hole are respectively formed in the extending tail end position of the horizontal main body, and the vertical auxiliary bodies are symmetrically arranged on two sides of the central through hole; during the use, can insert fixed pin or reinforcing bar in central through-hole, left end through-hole and right-hand member through-hole, can guarantee that the rubber waterstop can not take place to shift, warp and curl.
The rubber waterstop is of an integrally formed structure and is prepared from the following raw materials in parts by weight:
further, the water-absorbent resin is sodium polystyrene sulfonate; the peroxide crosslinking agent is a peroxide crosslinking agent BIBP.
Further, the reinforcing agent is subjected to coupling treatment by adopting a silane coupling agent Si-69, the reinforcing agent comprises carbon black, a carbon nano tube and fumed silica blending modified material, and the carbon black, the carbon nano tube and the fumed silica blending modified material in the reinforcing agent are 4:1 in parts by weight.
Further, the softening agent is naphthenic oil; the vulcanizing agent is sulfur powder.
Further, the accelerator is accelerator CBS and/or accelerator DM.
Further, the anti-aging agent is an anti-aging agent RD and/or an anti-aging agent MB.
Further, the mildew preventive is 2-pyridinethiol-1-zinc oxide.
Further, the plasticizer is dioctyl sebacate.
The preparation method of the rubber waterstop comprises the following steps: (a) weighing the raw materials according to the weight part of the formula, putting the ethylene propylene diene monomer rubber into an internal rubber mixer for plastication, and mixing for 5-7 minutes at the set temperature of 125 +/-5 ℃ and the pressure of 0.5MPa by using an internal mixer; (b) adding low phenyl silicone rubber, a reinforcing agent, bentonite, a softening agent, a peroxide crosslinking agent, zinc oxide and a mildew preventive into the plasticated ethylene propylene diene monomer rubber, setting the temperature of an internal mixer to be 100 +/-5 ℃, and mixing for 3-5 minutes under the pressure of 0.5 MPa; (c) b, adding the water-absorbent resin, a vulcanizing agent, an accelerator, an anti-aging agent and a plasticizer into the mixed rubber material, setting the temperature to be 80 +/-5 ℃, and continuously mixing for 2-4 minutes; (d) the mixed rubber material is discharged and enters an open mill, the roller distance of the open mill is 1mm, the rubber is rolled for 2 times, and then the sheet is sealed; (e) and preheating the mold, then putting the rubber material after the sheet is removed into the preheated mold, laminating the film, vulcanizing and carrying out compression molding to obtain the rubber waterstop.
Further, in the step e, the vulcanization pressure is 5-8 MPa, the vulcanization temperature is 100-140 ℃, the air is exhausted in the vulcanization, the exhaust stroke is 8mm, the number of times of air exhaust is 5-7, and the interval between the air exhausts is 25 s; and 3min after the air exhaust is finished, increasing the vulcanization pressure to 12-15 ℃, and keeping the vulcanization temperature at 100-140 ℃.
The invention has the beneficial effects that:
(1) the rubber water stop provided by the invention is of an integrally formed structure, and when the rubber water stop is used, fixing pins or reinforcing steel bars can be inserted into the central through hole, the left end through hole and the right end through hole, so that the rubber water stop can be prevented from shifting, deforming and curling.
(2) The rubber waterstop provided by the invention adopts the ethylene propylene diene monomer rubber and the low-phenyl silicone rubber as rubber main materials, wherein bentonite and the reinforcing agent after coupling treatment are added, the rubber waterstop has the characteristics of excellent water absorption performance, corrosion resistance and the like when used for a waterstop material, and the reinforcing agent after coupling treatment adopts a carbon black, carbon nano tube and fumed silica blending modified material, so that the rubber waterstop has good tear resistance, low temperature resistance, plasticity and repeated water immersion expansibility; the water-absorbent resin, the anti-aging agent, the zinc oxide, the softening agent, the accelerator and the expanding agent are added, and the water-absorbent resin, the anti-aging agent, the zinc oxide, the softening agent, the accelerator and the expanding agent can be effectively fused with the low phenyl silicone rubber and the ethylene propylene diene monomer rubber, so that the water-absorbent resin has excellent water-stopping expansion performance, wide application temperature range, simple preparation method and low price.
Drawings
Fig. 1 is a schematic structural view of the rubber waterstop of the present invention.
Detailed Description
The invention will be further illustrated by the following specific examples, which are given for illustrative purposes only and are not intended to be limiting;
example 1:
a rubber water stop comprises a horizontal main body 1 of the rubber water stop, wherein a plurality of groups of vertical auxiliary bodies 2 are arranged on the horizontal main body 1 in a central symmetry manner, a central through hole 3 is formed in the middle position of the horizontal main body 1, a left through hole 4 and a right through hole 5 are respectively formed in the extending tail end position of the horizontal main body 1, and the vertical auxiliary bodies 2 are symmetrically arranged on two sides of the central through hole 3; during the use, can insert fixed pin or reinforcing bar in central through-hole 3, left end through-hole 4 and right-hand member through-hole 5, can guarantee that the rubber waterstop can not take place aversion, deformation and curl.
The rubber waterstop is of an integrally formed structure and is prepared from the following raw materials in parts by weight:
during the use, can insert fixed pin or reinforcing bar in central through-hole, left end through-hole (4) and right-hand member through-hole (5), can guarantee that the rubber waterstop can not take place to shift, warp and curl.
The water-absorbent resin is sodium polystyrene sulfonate; the peroxide crosslinking agent is a peroxide crosslinking agent BIBP; the reinforcing agent is subjected to coupling treatment by adopting a silane coupling agent Si-69, the reinforcing agent comprises carbon black, a carbon nano tube and fumed silica blending modified material, and the carbon black, the carbon nano tube and the fumed silica blending modified material in the reinforcing agent are 4:1 in parts by weight; the softener is naphthenic oil; the vulcanizing agent is sulfur powder; the accelerator is an accelerator DM; the anti-aging agent is an anti-aging agent MB; the mildew preventive is 2-pyridinethiol-1-zinc oxide; the plasticizer is dioctyl sebacate.
The preparation method of the rubber waterstop comprises the following steps: (a) weighing the raw materials according to the weight part of the formula, putting the ethylene propylene diene monomer rubber into an internal rubber mixing mill for plastication, setting the temperature of an internal mixer to be 125 +/-5 ℃, and mixing for 7 minutes under the pressure of 0.5 MPa; adding low phenyl silicone rubber, a reinforcing agent, bentonite, a softening agent, a peroxide crosslinking agent, zinc oxide and a mildew preventive into the plasticated ethylene propylene diene monomer rubber, setting the temperature of an internal mixer to be 100 +/-5 ℃, and mixing for 3 minutes under the pressure of 0.5 MPa; (c) b, adding the water-absorbent resin, a vulcanizing agent, an accelerator, an anti-aging agent and a plasticizer into the mixed rubber material, setting the temperature to be 80 +/-5 ℃, and continuously mixing for 3 minutes; (d) the mixed rubber material is discharged and enters an open mill, the roller distance of the open mill is 1mm, the rubber is rolled for 2 times, and then the sheet is sealed; (e) and preheating the mold, then putting the rubber material after the sheet is removed into the preheated mold, laminating the film, vulcanizing and carrying out compression molding to obtain the rubber waterstop.
Wherein the pressure of the vulcanization in the step e is 8MPa, the temperature of the vulcanization is 120 ℃, the air is exhausted in the vulcanization, the stroke of the exhaust is 8mm, the frequency of the exhaust is 5 times, and the interval between the exhausts is 25 s; after the venting was completed for 3min, the pressure of the vulcanization was increased to 14MPa, and the temperature of the vulcanization was maintained at 120 ℃.
Example 2
A rubber water stop comprises a horizontal main body 1 of the rubber water stop, wherein a plurality of groups of vertical auxiliary bodies 2 are arranged on the horizontal main body 1 in a central symmetry manner, a central through hole 3 is formed in the middle position of the horizontal main body 1, a left through hole 4 and a right through hole 5 are respectively formed in the extending tail end position of the horizontal main body 1, and the vertical auxiliary bodies 2 are symmetrically arranged on two sides of the central through hole 3; during the use, can insert fixed pin or reinforcing bar in central through-hole 3, left end through-hole 4 and right-hand member through-hole 5, can guarantee that the rubber waterstop can not take place aversion, deformation and curl.
The rubber waterstop is of an integrally formed structure and is prepared from the following raw materials in parts by weight:
during the use, can insert fixed pin or reinforcing bar in central through-hole, left end through-hole (4) and right-hand member through-hole (5), can guarantee that the rubber waterstop can not take place to shift, warp and curl.
The water-absorbent resin is sodium polystyrene sulfonate; the peroxide crosslinking agent is a peroxide crosslinking agent BIBP; the reinforcing agent is subjected to coupling treatment by adopting a silane coupling agent Si-69, the reinforcing agent comprises carbon black, a carbon nano tube and fumed silica blending modified material, and the carbon black, the carbon nano tube and the fumed silica blending modified material in the reinforcing agent are 4:1 in parts by weight; the softener is naphthenic oil; the vulcanizing agent is sulfur powder; the accelerator is accelerator CBS; the anti-aging agent is an anti-aging agent RD; the mildew preventive is 2-pyridinethiol-1-zinc oxide; the plasticizer is dioctyl sebacate.
The preparation method of the rubber waterstop comprises the following steps: (a) weighing the raw materials according to the weight part of the formula, putting the ethylene propylene diene monomer rubber into an internal rubber mixing mill for plastication, setting the temperature of an internal mixer to be 125 +/-5 ℃, and mixing for 5 minutes under the pressure of 0.5 MPa; adding low phenyl silicone rubber, a reinforcing agent, bentonite, a softening agent, a peroxide crosslinking agent, zinc oxide and a mildew preventive into the plasticated ethylene propylene diene monomer rubber, setting the temperature of an internal mixer to be 100 +/-5 ℃, and mixing for 5 minutes under the pressure of 0.5 MPa; (c) b, adding the water-absorbent resin, a vulcanizing agent, an accelerator, an anti-aging agent and a plasticizer into the mixed rubber material, setting the temperature to be 80 +/-5 ℃, and continuously mixing for 3 minutes; (d) the mixed rubber material is discharged and enters an open mill, the roller distance of the open mill is 1mm, the rubber is rolled for 2 times, and then the sheet is sealed; (e) and preheating the mold, then putting the rubber material after the sheet is removed into the preheated mold, laminating the film, vulcanizing and carrying out compression molding to obtain the rubber waterstop.
Wherein the pressure of the vulcanization in the step e is 5MPa, the temperature of the vulcanization is 120 ℃, the exhaust is carried out in the vulcanization, the stroke of the exhaust is 8mm, the times of the exhaust are 5 times, and the interval between the exhausts is 25 s; after the venting was completed for 3min, the pressure of the vulcanization was increased to 12MPa, and the temperature of the vulcanization was maintained at 120 ℃.
Example 3
A rubber water stop comprises a horizontal main body 1 of the rubber water stop, wherein a plurality of groups of vertical auxiliary bodies 2 are arranged on the horizontal main body 1 in a central symmetry manner, a central through hole 3 is formed in the middle position of the horizontal main body 1, a left through hole 4 and a right through hole 5 are respectively formed in the extending tail end position of the horizontal main body 1, and the vertical auxiliary bodies 2 are symmetrically arranged on two sides of the central through hole 3; during the use, can insert fixed pin or reinforcing bar in central through-hole 3, left end through-hole 4 and right-hand member through-hole 5, can guarantee that the rubber waterstop can not take place aversion, deformation and curl.
The rubber waterstop is of an integrally formed structure and is prepared from the following raw materials in parts by weight:
during the use, can insert fixed pin or reinforcing bar in central through-hole, left end through-hole (4) and right-hand member through-hole (5), can guarantee that the rubber waterstop can not take place to shift, warp and curl.
The water-absorbent resin is sodium polystyrene sulfonate; the peroxide crosslinking agent is a peroxide crosslinking agent BIBP; the reinforcing agent is subjected to coupling treatment by adopting a silane coupling agent Si-69, the reinforcing agent comprises carbon black, a carbon nano tube and fumed silica blending modified material, and the carbon black, the carbon nano tube and the fumed silica blending modified material in the reinforcing agent are 4:1 in parts by weight; the softener is naphthenic oil; the vulcanizing agent is sulfur powder; the accelerator is an accelerator DM; the anti-aging agent is an anti-aging agent RD; the mildew preventive is 2-pyridinethiol-1-zinc oxide; the plasticizer is dioctyl sebacate.
The preparation method of the rubber waterstop comprises the following steps: (a) weighing the raw materials according to the weight part of the formula, putting the ethylene propylene diene monomer rubber into an internal rubber mixing mill for plastication, setting the temperature of an internal mixer to be 125 +/-5 ℃, and mixing for 6 minutes under the pressure of 0.5 MPa; adding low phenyl silicone rubber, a reinforcing agent, bentonite, a softening agent, a peroxide crosslinking agent, zinc oxide and a mildew preventive into the plasticated ethylene propylene diene monomer, setting the temperature of an internal mixer to be 100 +/-5 ℃, and mixing for 4 minutes under the pressure of 0.5 MPa; (c) b, adding the water-absorbent resin, a vulcanizing agent, an accelerator, an anti-aging agent and a plasticizer into the mixed rubber material, setting the temperature to be 80 +/-5 ℃, and continuously mixing for 4 minutes; (d) the mixed rubber material is discharged and enters an open mill, the roller distance of the open mill is 1mm, the rubber is rolled for 2 times, and then the sheet is sealed; (e) and preheating the mold, then putting the rubber material after the sheet is removed into the preheated mold, laminating the film, vulcanizing and carrying out compression molding to obtain the rubber waterstop.
Wherein the pressure of the vulcanization in the step e is 6MPa, the temperature of the vulcanization is 110 ℃, the air is exhausted in the vulcanization, the stroke of the exhaust is 8mm, the frequency of the exhaust is 7 times, and the interval between the exhausts is 25 s; after the venting was completed for 3min, the pressure of the vulcanization was increased to 15MPa, and the temperature of the vulcanization was maintained at 110 ℃.
Example 4
A rubber water stop comprises a horizontal main body 1 of the rubber water stop, wherein a plurality of groups of vertical auxiliary bodies 2 are arranged on the horizontal main body 1 in a central symmetry manner, a central through hole 3 is formed in the middle position of the horizontal main body 1, a left through hole 4 and a right through hole 5 are respectively formed in the extending tail end position of the horizontal main body 1, and the vertical auxiliary bodies 2 are symmetrically arranged on two sides of the central through hole 3; during the use, can insert fixed pin or reinforcing bar in central through-hole 3, left end through-hole 4 and right-hand member through-hole 4, can guarantee that the rubber waterstop can not take place aversion, deformation and curl.
The rubber waterstop is of an integrally formed structure and is prepared from the following raw materials in parts by weight:
during the use, can insert fixed pin or reinforcing bar in central through-hole, left end through-hole (4) and right-hand member through-hole (5), can guarantee that the rubber waterstop can not take place to shift, warp and curl.
The water-absorbent resin is sodium polystyrene sulfonate; the peroxide crosslinking agent is a peroxide crosslinking agent BIBP; the reinforcing agent is subjected to coupling treatment by adopting a silane coupling agent Si-69, the reinforcing agent comprises carbon black, a carbon nano tube and fumed silica blending modified material, and the carbon black, the carbon nano tube and the fumed silica blending modified material in the reinforcing agent are 4:1 in parts by weight; the softener is naphthenic oil; the vulcanizing agent is sulfur powder; the accelerator is accelerator CBS and accelerator DM; the anti-aging agent is an anti-aging agent RD and an anti-aging agent MB; the mildew preventive is 2-pyridinethiol-1-zinc oxide; the plasticizer is dioctyl sebacate.
The preparation method of the rubber waterstop comprises the following steps: (a) weighing the raw materials according to the weight part of the formula, putting the ethylene propylene diene monomer rubber into an internal rubber mixing mill for plastication, setting the temperature of an internal mixer to be 125 +/-5 ℃, and mixing for 5 minutes under the pressure of 0.5 MPa; adding low phenyl silicone rubber, a reinforcing agent, bentonite, a softening agent, a peroxide crosslinking agent, zinc oxide and a mildew preventive into the plasticated ethylene propylene diene monomer rubber, setting the temperature of an internal mixer to be 100 +/-5 ℃, and mixing for 5 minutes under the pressure of 0.5 MPa; (c) b, adding the water-absorbent resin, a vulcanizing agent, an accelerator, an anti-aging agent and a plasticizer into the mixed rubber material, setting the temperature to be 80 +/-5 ℃, and continuously mixing for 3 minutes; (d) the mixed rubber material is discharged and enters an open mill, the roller distance of the open mill is 1mm, the rubber is rolled for 2 times, and then the sheet is sealed; (e) and preheating the mold, then putting the rubber material after the sheet is removed into the preheated mold, laminating the film, vulcanizing and carrying out compression molding to obtain the rubber waterstop.
Wherein the pressure of the vulcanization in the step e is 8MPa, the temperature of the vulcanization is 140 ℃, the air is exhausted in the vulcanization, the stroke of the exhaust is 8mm, the frequency of the exhaust is 6 times, and the interval between the exhausts is 25 s; after the venting was completed for 3min, the pressure of the vulcanization was increased to 14MPa, and the temperature of the vulcanization was maintained at 140 ℃.
Comparative example 1
A rubber water stop comprises a horizontal main body 1 of the rubber water stop, wherein a plurality of groups of vertical auxiliary bodies 2 are arranged on the horizontal main body 1 in a central symmetry manner, a central through hole 3 is formed in the middle position of the horizontal main body 1, a left through hole 4 and a right through hole 5 are respectively formed in the extending tail end position of the horizontal main body 1, and the vertical auxiliary bodies 2 are symmetrically arranged on two sides of the central through hole 3; during the use, can insert fixed pin or reinforcing bar in central through-hole 3, left end through-hole 4 and right-hand member through-hole 4, can guarantee that the rubber waterstop can not take place aversion, deformation and curl.
The rubber waterstop is of an integrally formed structure and is prepared from the following raw materials in parts by weight:
during the use, can insert fixed pin or reinforcing bar in central through-hole, left end through-hole (4) and right-hand member through-hole (5), can guarantee that the rubber waterstop can not take place to shift, warp and curl.
The water-absorbent resin is sodium polystyrene sulfonate; the peroxide crosslinking agent is a peroxide crosslinking agent BIBP. The reinforcing agent is carbon black N550 and N330. The softener is naphthenic oil; the vulcanizing agent is sulfur powder. The accelerator is accelerator CBS. The anti-aging agent is an anti-aging agent RD. The mildew preventive is 2-pyridinethiol-1-zinc oxide. The plasticizer is dioctyl sebacate.
The preparation method of the rubber waterstop comprises the following steps: (a) weighing the raw materials according to the weight part of the formula, putting the ethylene propylene diene monomer rubber into an internal rubber mixing mill for plastication, setting the temperature of an internal mixer to be 125 +/-5 ℃, and mixing for 5 minutes under the pressure of 0.5 MPa; adding low phenyl silicone rubber, a reinforcing agent, bentonite, a softening agent, a peroxide crosslinking agent, zinc oxide and a mildew preventive into the plasticated ethylene propylene diene monomer rubber, setting the temperature of an internal mixer to be 100 +/-5 ℃, and mixing for 5 minutes under the pressure of 0.5 MPa; (c) b, adding the water-absorbent resin, a vulcanizing agent, an accelerator, an anti-aging agent and a plasticizer into the mixed rubber material, setting the temperature to be 80 +/-5 ℃, and continuously mixing for 3 minutes; (d) the mixed rubber material is discharged and enters an open mill, the roller distance of the open mill is 1mm, the rubber is rolled for 2 times, and then the sheet is sealed; (e) and preheating the mold, then putting the rubber material after the sheet is removed into the preheated mold, laminating the film, vulcanizing and carrying out compression molding to obtain the rubber waterstop.
Wherein the pressure of the vulcanization in the step e is 8MPa, the temperature of the vulcanization is 140 ℃, the air is exhausted in the vulcanization, the stroke of the exhaust is 8mm, the frequency of the exhaust is 6 times, and the interval between the exhausts is 25 s; after the venting was completed for 3min, the pressure of the vulcanization was increased to 14MPa, and the temperature of the vulcanization was maintained at 140 ℃.
Comparative example 2
The rubber waterstop is prepared from the following raw materials in parts by weight:
the water-absorbent resin is sodium polystyrene sulfonate; the peroxide crosslinking agent is a peroxide crosslinking agent BIBP; the reinforcing agent is subjected to coupling treatment by adopting a silane coupling agent Si-69, the reinforcing agent comprises carbon black, a carbon nano tube and fumed silica blending modified material, and the carbon black, the carbon nano tube and the fumed silica blending modified material in the reinforcing agent are 4:1 in parts by weight; the softener is naphthenic oil; the vulcanizing agent is sulfur powder; the accelerator is an accelerator DM; the anti-aging agent is an anti-aging agent MB; the mildew preventive is 2-pyridinethiol-1-zinc oxide; the plasticizer is dioctyl sebacate.
The preparation method of the rubber waterstop comprises the following steps: (a) weighing the raw materials according to the weight part of the formula, putting all the raw materials into an internal mixer for mixing, wherein the setting temperature of the internal mixer is 125 +/-5 ℃, the pressure is 0.5MPa, and the mixing is carried out for 10 minutes; (b) the mixed rubber material is discharged and enters an open mill, the roll gap of the open mill is 1mm, rubber is rolled for 2 times, and then the rubber is discharged and sealed; (e) and (3) preheating the die, cooling the rubber material after the sheet is discharged, standing for 8 hours, and slicing to obtain the rubber water stop.
And (3) performance comparison: the rubber waterstops of examples 1 to 4 and comparative examples 1 to 2 were tested, and the results of the performance tests are shown in table 1.
TABLE 1 Performance test results for examples 1-4 and comparative examples 1-2.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.
Claims (10)
1. A rubber waterstop which is characterized in that: the rubber water stop comprises a horizontal main body (1) of a rubber water stop, wherein a plurality of groups of vertical auxiliary bodies (2) are arranged on the horizontal main body (1) in a central symmetry manner, a central through hole (3) is formed in the middle point of the horizontal main body (1), a left end through hole (4) and a right end through hole (5) are respectively formed in the extending tail end of the horizontal main body (1), and the vertical auxiliary bodies (2) are symmetrically arranged on two sides of the central through hole (3); the rubber waterstop is of an integrally formed structure and is prepared from the following raw materials in parts by weight:
ethylene propylene diene monomer 100-120 parts
10-20 parts of low-phenyl silicone rubber,
15-25 parts of bentonite, namely 15-25 parts of bentonite,
15 to 20 parts of a water-absorbent resin,
5-8 parts of a peroxide crosslinking agent,
15 to 20 parts of a reinforcing agent,
3-5 parts of zinc oxide,
5-10 parts of a softening agent,
1-2 parts of a vulcanizing agent,
1-2 parts of an anti-aging agent,
1-2 parts of an accelerator, namely,
1-2 parts of a mildew preventive,
1-2 parts of a plasticizer.
2. A rubber waterstop according to claim 1, wherein: the water-absorbent resin is sodium polystyrene sulfonate; the peroxide crosslinking agent is a peroxide crosslinking agent BIBP.
3. A rubber waterstop according to claim 1, wherein: the reinforcing agent is prepared by coupling silane coupling agent Si-69, the reinforcing agent comprises carbon black, carbon nano tubes and fumed silica blending modified materials, and the carbon black, the carbon nano tubes and the fumed silica blending modified materials in the reinforcing agent are 4:1 in parts by weight.
4. A rubber waterstop according to claim 1, wherein: the softener is naphthenic oil; the vulcanizing agent is sulfur powder.
5. A rubber waterstop according to claim 1, wherein: the accelerator is accelerator CBS and/or accelerator DM.
6. A rubber waterstop according to claim 1, wherein: the anti-aging agent is anti-aging agent RD and/or anti-aging agent MB.
7. A rubber waterstop according to claim 1, wherein: the mildew preventive is 2-pyridinethiol-1-zinc oxide.
8. A rubber waterstop according to claim 1, wherein: the plasticizer is dioctyl sebacate.
9. A method for producing a rubber waterstop according to any one of claims 1 to 8, characterized in that: the method comprises the following steps: (a) weighing the raw materials according to the weight part of the formula, putting the ethylene propylene diene monomer rubber into an internal rubber mixer for plastication, and mixing for 5-7 minutes at the set temperature of 125 +/-5 ℃ and the pressure of 0.5MPa by using an internal mixer; (b) adding low phenyl silicone rubber, a reinforcing agent, bentonite, a softening agent, a peroxide crosslinking agent, zinc oxide and a mildew preventive into the plasticated ethylene propylene diene monomer rubber, setting the temperature of an internal mixer to be 100 +/-5 ℃, and mixing for 3-5 minutes under the pressure of 0.5 MPa; (c) b, adding the water-absorbent resin, a vulcanizing agent, an accelerator, an anti-aging agent and a plasticizer into the mixed rubber material, setting the temperature to be 80 +/-5 ℃, and continuously mixing for 2-4 minutes; (d) the mixed rubber material is discharged and enters an open mill, the roller distance of the open mill is 1mm, the rubber is rolled for 2 times, and then the sheet is sealed; (e) and preheating the mold, then putting the rubber material after the sheet is removed into the preheated mold, laminating the film, vulcanizing and carrying out compression molding to obtain the rubber waterstop.
10. The method for producing a rubber waterstop according to claim 9, characterized in that: in the step e, the vulcanization pressure is 5-8 MPa, the vulcanization temperature is 100-140 ℃, the air is exhausted in the vulcanization, the exhaust stroke is 8mm, the air exhaust frequency is 5-7 times, and the interval between the air exhausts is 25 s; and 3min after the air exhaust is finished, increasing the vulcanization pressure to 12-15 ℃, and keeping the vulcanization temperature at 100-140 ℃.
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| CN117417580A (en) * | 2023-12-18 | 2024-01-19 | 中裕铁信交通科技股份有限公司 | Rubber material, preparation method thereof and environment-adaptive rubber support |
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