CN116693949B - Rubber material, preparation method thereof and shock-absorbing and isolating rubber support structure - Google Patents
Rubber material, preparation method thereof and shock-absorbing and isolating rubber support structure Download PDFInfo
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- CN116693949B CN116693949B CN202310966327.3A CN202310966327A CN116693949B CN 116693949 B CN116693949 B CN 116693949B CN 202310966327 A CN202310966327 A CN 202310966327A CN 116693949 B CN116693949 B CN 116693949B
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 236
- 239000000463 material Substances 0.000 title claims abstract description 115
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000013016 damping Methods 0.000 claims abstract description 118
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 49
- 244000043261 Hevea brasiliensis Species 0.000 claims abstract description 42
- 229920003052 natural elastomer Polymers 0.000 claims abstract description 42
- 229920001194 natural rubber Polymers 0.000 claims abstract description 42
- 229920002367 Polyisobutene Polymers 0.000 claims abstract description 39
- 229920002725 thermoplastic elastomer Polymers 0.000 claims abstract description 39
- 239000000378 calcium silicate Substances 0.000 claims abstract description 36
- 229910052918 calcium silicate Inorganic materials 0.000 claims abstract description 36
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims abstract description 36
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 26
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000005011 phenolic resin Substances 0.000 claims abstract description 24
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000006232 furnace black Substances 0.000 claims abstract description 19
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000005977 Ethylene Substances 0.000 claims abstract description 8
- 239000004793 Polystyrene Substances 0.000 claims abstract description 8
- 229920000642 polymer Polymers 0.000 claims abstract description 8
- 229920002223 polystyrene Polymers 0.000 claims abstract description 8
- 239000012190 activator Substances 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 263
- 239000010959 steel Substances 0.000 claims description 263
- 238000002156 mixing Methods 0.000 claims description 99
- 238000007789 sealing Methods 0.000 claims description 33
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 28
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 22
- 239000011593 sulfur Substances 0.000 claims description 22
- 229910052717 sulfur Inorganic materials 0.000 claims description 22
- KPNYFXUDBVQRNK-UHFFFAOYSA-N 1-(4-anilinophenyl)pyrrole-2,5-dione Chemical compound O=C1C=CC(=O)N1C(C=C1)=CC=C1NC1=CC=CC=C1 KPNYFXUDBVQRNK-UHFFFAOYSA-N 0.000 claims description 16
- 235000021355 Stearic acid Nutrition 0.000 claims description 14
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 14
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 14
- 239000008117 stearic acid Substances 0.000 claims description 14
- 239000011787 zinc oxide Substances 0.000 claims description 14
- AFZSMODLJJCVPP-UHFFFAOYSA-N dibenzothiazol-2-yl disulfide Chemical compound C1=CC=C2SC(SSC=3SC4=CC=CC=C4N=3)=NC2=C1 AFZSMODLJJCVPP-UHFFFAOYSA-N 0.000 claims description 13
- DEQZTKGFXNUBJL-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)cyclohexanamine Chemical compound C1CCCCC1NSC1=NC2=CC=CC=C2S1 DEQZTKGFXNUBJL-UHFFFAOYSA-N 0.000 claims description 13
- 230000035939 shock Effects 0.000 claims description 13
- 230000003213 activating effect Effects 0.000 claims description 10
- HLBZWYXLQJQBKU-UHFFFAOYSA-N 4-(morpholin-4-yldisulfanyl)morpholine Chemical compound C1COCCN1SSN1CCOCC1 HLBZWYXLQJQBKU-UHFFFAOYSA-N 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 5
- 239000007822 coupling agent Substances 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 22
- 230000000694 effects Effects 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 13
- 150000001875 compounds Chemical class 0.000 description 60
- 238000004073 vulcanization Methods 0.000 description 30
- 238000007599 discharging Methods 0.000 description 23
- 239000000853 adhesive Substances 0.000 description 21
- 230000001070 adhesive effect Effects 0.000 description 21
- 238000006073 displacement reaction Methods 0.000 description 17
- 230000001680 brushing effect Effects 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 14
- 238000010586 diagram Methods 0.000 description 10
- 239000006229 carbon black Substances 0.000 description 9
- 238000004898 kneading Methods 0.000 description 7
- 235000012239 silicon dioxide Nutrition 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000002557 mineral fiber Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000000979 retarding effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 240000007849 Macleaya cordata Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L7/00—Compositions of natural rubber
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention belongs to the technical field of shock-absorbing and isolating supports, and particularly relates to a rubber material, a preparation method thereof and a shock-absorbing and isolating rubber support structure. The rubber material provided by the invention comprises natural rubber, polyisobutene, a high damping thermoplastic elastomer, an activator, an anti-aging agent, phenolic resin, super wear-resistant furnace black, calcium silicate, a vulcanizing agent and an accelerator; the viscosity average molecular weight of the polyisobutene is more than or equal to 100 ten thousand; the high damping thermoplastic elastomer is a triblock polymer having polystyrene end caps and an ethylene branched polydiene mid-section. The rubber material provided by the invention has the advantages of high damping ratio and high energy consumption in a wider temperature range. The shock-absorbing and isolating rubber support structure obtained by the rubber material provided by the invention has the shock-absorbing and isolating effect with high energy consumption in the service process of the support, has the effect of high damping energy consumption when strong earthquake occurs, and reduces the risk of beam falling.
Description
Technical Field
The invention belongs to the technical field of shock-absorbing and isolating supports, and particularly relates to a rubber material, a preparation method thereof and a shock-absorbing and isolating rubber support structure.
Background
The shock-absorbing and isolating support of the bridge is an important component for connecting the upper structure and the lower structure of the bridge and is an indispensable component for bearing the bridge.
The conventional rubber shock-absorbing and isolating support mainly comprises a high-damping rubber support, a lead rubber support and a horizontal force dispersion type rubber support, wherein the rubber material is mainly subjected to shear deformation to provide horizontal displacement to achieve a shock-absorbing and isolating effect, and the displacement deformation is generally designed to be 300% -350% of the thickness of the rubber layer. However, the rubber materials sold in the market at present have the defects of low damping ratio and low energy consumption, and in the service process, the rubber support can gradually crack and break under the condition of large deformation for a long time, and once the rubber support encounters strong shock, the rubber support generates large displacement deformation, so that the risk of falling beams exists.
Disclosure of Invention
The invention aims to provide a rubber material, a preparation method thereof and a shock-absorbing and isolating rubber support structure. The shock-absorbing and isolating rubber support structure obtained by the rubber material provided by the invention has the shock-absorbing and isolating effect with high energy consumption in the service process of the support, has the effect of high damping energy consumption when strong earthquake occurs, and reduces the risk of beam falling.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a rubber material which comprises the following components in parts by weight:
50-70 parts of natural rubber, 30-50 parts of polyisobutene, 20-40 parts of high-damping thermoplastic elastomer, 6-12 parts of activating agent, 3-5 parts of anti-aging agent, 5-10 parts of phenolic resin, 50-70 parts of super wear-resistant furnace black, 15-30 parts of calcium silicate, 1.2-1.8 parts of vulcanizing agent and 1-2 parts of accelerator; the viscosity average molecular weight of the polyisobutene is more than or equal to 100 ten thousand; the high damping thermoplastic elastomer is a triblock polymer having polystyrene end caps and an ethylene branched polydiene mid-section.
Preferably, the viscosity average molecular weight of the polyisobutene is 100-850 ten thousand.
Preferably, the activator comprises zinc oxide and stearic acid; the mass ratio of the zinc oxide to the stearic acid is (4-7) to (2-5).
Preferably, the anti-aging agent comprises N- (4-anilinophenyl) maleimide and an anti-aging agent RD; the mass ratio of the N- (4-anilinophenyl) maleimide to the anti-aging agent RD is (1-2) 1.
Preferably, the vulcanizing agent comprises sulfur and 4,4' -dithiodimorpholine; the mass ratio of the sulfur to the 4,4' -dithiodimorpholine is (1-2): 1.
Preferably, the accelerator comprises dibenzothiazyl disulfide and N-cyclohexyl-2-benzothiazole sulfenamide; the mass ratio of the dibenzothiazyl disulfide to the N-cyclohexyl-2-benzothiazole sulfenamide is 1 (1.5-2).
The invention provides a preparation method of the rubber material, which comprises the following steps:
firstly mixing polyisobutylene, calcium silicate, natural rubber and a high damping thermoplastic elastomer to obtain a first mixed material;
the first mixing material, the activating agent, the anti-aging agent, the phenolic resin and the ultra-wear-resistant furnace black are subjected to second mixing and then are subjected to thin-pass to obtain a second mixing material;
and thirdly mixing the second mixing material, the vulcanizing agent and the accelerator to obtain the rubber material.
The invention provides a shock-absorbing and isolating rubber support structure, which comprises a support main body 2; the support main body 2 comprises an upper seal layer steel plate 2-1 and a lower seal layer steel plate 2-4 which are arranged in parallel; rubber materials 2-2 and a plurality of stiffening steel plates 2-3 which are distributed in the rubber materials 2-2 and are parallel to the upper seal layer steel plates 2-1 and the lower seal layer steel plates 2-4 are filled between the upper seal layer steel plates 2-1 and the lower seal layer steel plates 2-4; the rubber material 2-2 is the rubber material described in the technical scheme or the rubber material prepared by the preparation method described in the technical scheme.
Preferably, the steel plate further comprises an upper connecting steel plate 1 fixedly connected with the upper sealing layer steel plate 2-1, wherein the area of the upper connecting steel plate 1 is larger than the area of the upper sealing layer steel plate 2-1; the lower connecting steel plate 4 is fixedly connected with the lower sealing layer steel plates 2-4, and the area of the lower connecting steel plate 4 is larger than the area of the lower sealing layer steel plates 2-4; the lower surface of the lower seal layer steel plate 2-4 and the upper surface of the lower connecting steel plate 4 are respectively provided with a first groove and a second groove which are in the same shape and the same size, and the shapes of the first groove and the second groove are circular or elliptical; and a damping steel ring 3 is arranged in a space formed by the first groove and the second groove, and the height of the damping steel ring 3 is the total depth of the first groove and the second groove.
Preferably, the lower connecting steel plate 4 and the lower sealing layer steel plate 2-4 are rectangular in shape, and 2 first baffle plates 6 and 2 second baffle plates 7 which are mutually corresponding are arranged on the upper surface of the lower connecting steel plate 4 around four sides of the lower sealing layer steel plate 2-4; the 2 first baffle plates 6 are arranged along the direction that the lower seal layer steel plates 2-4 relatively slide on the upper surface of the lower connecting steel plate 4; the cross section of the 2 first baffle plates 6 is in an inverted L shape, the opening direction of the 2 first baffle plates 6 faces the lower seal layer steel plates 2-4, and the transverse edges of the 2 first baffle plates 6 extend into the upper surfaces of the lower seal layer steel plates 2-4, so that the lower seal layer steel plates 2-4 are pressed down on the upper surfaces of the lower connecting steel plates 4.
The invention provides a rubber material which comprises the following components in parts by weight: 50-70 parts of natural rubber, 30-50 parts of polyisobutene, 20-40 parts of high-damping thermoplastic elastomer, 6-12 parts of activating agent, 3-5 parts of anti-aging agent, 5-10 parts of phenolic resin, 50-70 parts of super wear-resistant furnace black, 15-30 parts of calcium silicate, 1.2-1.8 parts of vulcanizing agent and 1-2 parts of accelerator; the viscosity average molecular weight of the polyisobutene is more than or equal to 100 ten thousand; the high damping thermoplastic elastomer is a triblock polymer having polystyrene end caps and an ethylene branched polydiene mid-section. First aspect: the high damping thermoplastic elastomer (triblock polymer of polystyrene end-capped and ethylene branched polydiene middle section) selected by the invention has a loss tangent peak value close to room temperature, shows extremely high damping performance, has good compatibility with natural rubber and polyisobutene, and combines ultrahigh molecular weight polyisobutene (viscosity average molecular weight is more than or equal to 100 ten thousand) with natural rubber and high damping thermoplastic elastomer, so that the compatibility is good, the damping temperature range of the rubber composite material can be effectively widened, and the rubber composite material has high damping performance in a wider temperature range (25-70 ℃); second aspect: the phenolic resin adopted in the invention can obviously improve the viscosity of rubber, enhance the damping characteristic of rubber materials and further improve the damping effect of the rubber materials; third aspect: the invention reasonably selects the types and the quantity of the rubber fillers, further improves the damping ratio and the mechanical property of the rubber, and specifically comprises the following steps: the super wear-resistant furnace black selected by the invention has fine particle size, high surface structure degree, large contact area with rubber and many physical bonding points, and a large amount of bonding glue is formed on the surface of the super wear-resistant furnace black, so that the heat generation is large and the energy consumption is remarkable when the rubber material is subjected to shear deformation; the calcium silicate is formed by calcining and melting calcium oxide and silicon dioxide at high temperature, a large number of micropores exist on the surface of the calcium silicate, and after the macromolecular rubber chains enter the micropores, the macromolecular rubber chains can play a role in retarding the movement of the molecular rubber chains in the shearing movement of the rubber material, so that the energy consumption effect is achieved. Therefore, the rubber material provided by the invention has the advantages of high damping ratio and high energy consumption in a wider temperature range (25-70 ℃).
The invention provides a shock-absorbing and isolating rubber support structure, which comprises a support main body 2; the support main body 2 comprises an upper seal layer steel plate 2-1 and a lower seal layer steel plate 2-4 which are arranged in parallel; rubber materials 2-2 and a plurality of stiffening steel plates 2-3 which are distributed in the rubber materials 2-2 and are parallel to the upper seal layer steel plates 2-1 and the lower seal layer steel plates 2-4 are filled between the upper seal layer steel plates 2-1 and the lower seal layer steel plates 2-4; the rubber material 2-2 is the rubber material described in the technical scheme or the rubber material prepared by the preparation method described in the technical scheme. The rubber material disclosed by the invention is used as the filling material of the support main body in the shock-absorbing and isolating rubber support structure, has an excellent damping energy consumption effect when a strong earthquake occurs, and reduces the risk of beam falling.
Further, the invention also comprises an upper connecting steel plate 1 fixedly connected with the upper sealing layer steel plate 2-1, wherein the area of the upper connecting steel plate 1 is larger than the area of the upper sealing layer steel plate 2-1; the lower connecting steel plate 4 is fixedly connected with the lower sealing layer steel plates 2-4, and the area of the lower connecting steel plate (4) is larger than the area of the lower sealing layer steel plates 2-4; the lower surface of the lower seal layer steel plate 2-4 and the upper surface of the lower connecting steel plate 4 are respectively provided with a first groove and a second groove which are in the same shape and the same size, and the shapes of the first groove and the second groove are circular or elliptical; and a damping steel ring 3 is arranged in a space formed by the first groove and the second groove, and the height of the damping steel ring 3 is the total depth of the first groove and the second groove. In the normal service process of the support structure, when the length of the beam body is changed due to temperature change and other reasons, the support main body 2 can generate small-displacement-level shear strain to meet the beam body deformation requirement; when strong earthquake occurs, the support main body 2 needs to generate larger displacement to meet the beam deformation requirement, under the condition, firstly, the support main body 2 generates shear strain, when the horizontal counter force generated by the support main body 2 is large enough, the support main body 2 slides on the lower connecting steel plate 4, the damping steel ring 3 is extruded in the sliding process, the damping steel ring 3 in the shape of a circular ring or an elliptical ring can deform (the circular ring is changed into the elliptical ring or the long shaft and the short shaft of the elliptical ring are changed), on one hand, the energy consumption and shock absorption effects are achieved, and on the other hand, the shear deformation of the support structure is partially recovered, so that the large displacement deformation of the support structure when the strong earthquake is handled is realized. Therefore, the shock-absorbing and isolating rubber support structure provided by the invention can provide larger horizontal displacement when strong earthquake occurs, has the effect of damping energy consumption, and reduces the risk of beam falling.
Further, in the invention, the shape of the lower connecting steel plate 4 and the lower sealing layer steel plate 2-4 is rectangular, and the upper surface of the lower connecting steel plate 4 is provided with 2 first baffle plates 6 and 2 second baffle plates 7 which are mutually corresponding around the four sides of the lower sealing layer steel plate 2-4; the 2 first baffle plates 6 are arranged along the direction that the lower seal layer steel plates 2-4 relatively slide on the upper surface of the lower connecting steel plate 4; the cross section of the 2 first baffle plates 6 is in an inverted L shape, the opening direction of the 2 first baffle plates 6 faces the lower seal layer steel plates 2-4, and the transverse edges of the 2 first baffle plates 6 extend into the upper surfaces of the lower seal layer steel plates 2-4, so that the lower seal layer steel plates 2-4 are pressed down on the upper surfaces of the lower connecting steel plates 4. According to the invention, 2 inverted L-shaped first baffle plates 6 are arranged on the upper surface of the lower connecting steel plate 4 along the direction that the lower sealing steel plate 2-4 moves (relatively slides) on the upper surface of the lower connecting steel plate 4, the 2 first baffle plates 6 surround the edges of two parallel sides of the lower sealing steel plate 2-4, and the opening direction faces the lower sealing steel plate 2-4, so that the support body 2 can be limited, the lower sealing steel plate 2-4 is pressed (limited) on the upper surface of the lower connecting steel plate 4, and the large shear deformation lower support body 2 is prevented from rolling; meanwhile, 2 second baffles 7 are arranged on the upper surface of the lower connecting steel plate 4 perpendicular to the direction that the lower sealing layer steel plates 2-4 move (relatively slide) on the upper surface of the lower connecting steel plate 4, and the 2 second baffles 7 can prevent the support main body 2 from sliding out of the lower connecting steel plate 4.
Drawings
FIG. 1 is a schematic diagram of a large-displacement high-energy-consumption shock-absorbing and isolating rubber support;
FIG. 2 is a top view of a large-displacement high-energy-consumption shock-absorbing and isolating rubber support provided by the invention;
FIG. 3 is a schematic diagram of a partial structure of a large-displacement high-energy-consumption shock-absorbing and isolating rubber support provided by the invention;
fig. 4 is a schematic structural diagram of a support main body 2 of a large-displacement high-energy-consumption shock-absorbing and isolating rubber support provided by the invention;
FIG. 5 is a schematic diagram of a structure of a prior art bridge high damping vibration-isolating rubber mount;
in fig. 1 to 5: 1 is an upper connecting steel plate, 2 is a support main body, 2-1 is an upper sealing layer steel plate, 2-2 is a high damping rubber material, 2-3 is a stiffening steel plate, 2-4 is a lower sealing layer steel plate, 3 is a damping steel ring, 4 is a lower connecting steel plate, 5 is a shear pin, 6 is a first baffle, 7 is a second baffle, 8-1 is an upper sleeve, 8-2 is a lower sleeve, and 9 is a bolt; 10 is an upper embedded steel plate, 11 is a lower embedded steel plate, 12-1 is an upper anchor rod, and 12-2 is a lower anchor rod.
Detailed Description
The invention provides a rubber material which comprises the following components in parts by weight:
50-70 parts of natural rubber, 30-50 parts of polyisobutene, 20-40 parts of high-damping thermoplastic elastomer, 6-12 parts of activating agent, 3-5 parts of anti-aging agent, 5-10 parts of phenolic resin, 50-70 parts of super wear-resistant furnace black, 15-30 parts of calcium silicate, 1.2-1.8 parts of vulcanizing agent and 1-2 parts of accelerator; the viscosity average molecular weight of the polyisobutene is more than or equal to 100 ten thousand; the high damping thermoplastic elastomer is a triblock polymer having polystyrene end caps and an ethylene branched polydiene mid-section.
In the present invention, all preparation materials/components are commercially available products well known to those skilled in the art unless specified otherwise.
The rubber material provided by the invention comprises 50-70 parts by mass of natural rubber, preferably 60-70 parts by mass, and particularly preferably 64 parts by mass, 70 parts by mass or 60 parts by mass. The invention has no special requirement on the purchased raw materials of the natural rubber, and adopts commercial products which are well known to the person skilled in the art.
Based on the mass parts of the natural rubber, the rubber material provided by the invention comprises 30-50 parts of polyisobutene, preferably 32-45 parts, and particularly preferably 30 parts, 36 parts, 42 parts or 50 parts.
In the invention, the viscosity average molecular weight of the polyisobutene is preferably 100-850 ten thousand, more preferably 200-850 ten thousand, and particularly preferably 400 ten thousand, 580 ten thousand, 680 ten thousand or 850 ten thousand. In the present invention, the viscosity average molecular weight of the polyisobutene is subject to GB/T1632.1 standard.
In a specific embodiment of the present invention, the polyisobutylene is preferably a product provided by the company Yankee petrochemical, china under the designations PIB-YS400, PIB-YS580, PIB-S680 or PIB-YS 850.
In the invention, the ultra-high molecular weight polyisobutene (HMPIB) is a highly saturated rubbery polymer and has good acid and alkali resistance, corrosion resistance, ozone resistance, ultraviolet aging resistance, excellent air tightness and electrical insulation and excellent damping performance. According to the invention, the ultra-high molecular weight polyisobutene is added into the natural rubber, so that the ageing resistance, weather resistance, bending fracture resistance and ozone resistance of the rubber at high temperature and the dielectric property of the rubber can be improved, and the absorption of water and the permeation of gas of the rubber can be reduced.
Based on the mass parts of the natural rubber, the rubber material provided by the invention comprises 20-40 parts of high-damping thermoplastic elastomer, preferably 25-35 parts, and particularly preferably 30 parts, 25 parts or 40 parts.
In the present invention, the high damping thermoplastic elastomer is a triblock polymer having a polystyrene end-capped and ethylene branched polydiene mid-section, preferably having a volatile content of 0.5wt% or less (GB/T24131.2-2018); the styrene content is preferably 22-24wt% (nuclear magnetic method); the ash content is preferably < 0.3% by weight (GB/T4498.1).
In a specific embodiment of the present invention, the high damping thermoplastic elastomer is preferably a DTPR2075 product available from Beijing Yanshan division of petrochemical Co., ltd.
In the present invention, the high damping thermoplastic elastomer is a triblock polymer having a polystyrene end-capped and ethylene branched polydiene mid-section, which has a loss tangent peak near room temperature, exhibits extremely high damping properties, and has good compatibility with natural rubber. The invention adopts the high-damping thermoplastic elastomer to modify the natural rubber, the mass part of the high-damping thermoplastic elastomer cannot be too large or too small, when the mass part of the high-damping thermoplastic elastomer is too large, the high-damping thermoplastic elastomer cannot be well compatible with the natural rubber, and the quality of the obtained rubber product is uneven; when the mass fraction of the high-damping thermoplastic elastomer is too small, the damping effect of the rubber material cannot be effectively improved.
The invention adopts the blending of the natural rubber, the ultra-high molecular weight polyisobutene and the high damping thermoplastic elastomer, can widen the damping temperature range of the composite rubber material, and improves the damping ratio and the energy consumption of the rubber material.
Based on the mass parts of the natural rubber, the rubber material provided by the invention comprises 6-12 parts of an activating agent, preferably 8-10 parts, and particularly preferably 8 parts, 10 parts or 9 parts.
In the present invention, the activator preferably includes zinc oxide and stearic acid; the mass ratio of the zinc oxide to the stearic acid is preferably (4-7): 2-5, more preferably (4.2-6.5): 2.3-4.6, and particularly preferably 5:3, 6:4 or 5:4. The invention adopts the compatibility of zinc oxide and stearic acid, and can be used as an activator of rubber materials together, so that the activity of natural rubber can be improved, and better crosslinking blending with ultrahigh molecular weight polyisobutylene and high damping thermoplastic elastomer can be realized.
Based on the mass parts of the natural rubber, the rubber material provided by the invention comprises 3-5 parts of an anti-aging agent, preferably 3.5-5 parts, and particularly preferably 3.5 parts, 4 parts, 5 parts or 4.5 parts.
In the present invention, the anti-aging agent preferably includes N- (4-anilinophenyl) Maleimide (MC) and an anti-aging agent RD; the mass ratio of the N- (4-anilinophenyl) maleimide to the anti-aging agent RD is preferably (1-2) 1, more preferably (1.1-1.7) 1, and particularly preferably 2:1.5, 2:2, 2.5:2 or 2.5:2.5.
In the invention, the N- (4-anilinophenyl) maleimide is a reactive anti-aging agent, and the N- (4-anilinophenyl) maleimide and the anti-aging agent RD are preferably matched for use, so that the aging of rubber materials can be effectively prevented, the weather resistance of the rubber materials is improved, and the service time of the rubber support is prolonged.
Based on the mass parts of the natural rubber, the rubber material provided by the invention comprises 5-10 parts of phenolic resin, preferably 6-10 parts, and particularly preferably 9 parts, 8 parts and 10 parts.
In the invention, the phenolic resin is preferably super phenolic resin taking alkylphenol as a main raw material, and can obviously improve the viscosity of rubber, enhance the damping characteristic of rubber materials and further improve the damping effect of the rubber materials in the mass part range. In the invention, the ash content of the phenolic resin is preferably less than or equal to 0.5%; the heating loss is preferably not more than 1.5%. In a specific embodiment of the present invention, the phenolic resin is preferably a product available from Kelong chemical (Suzhou) under the model number KPT-F8140S.
Based on the mass parts of the natural rubber, the rubber material provided by the invention comprises 50-70 parts of super wear-resistant furnace black, preferably 55-70 parts, and particularly preferably 55 parts, 65 parts, 60 parts or 70 parts.
In the invention, the super wear-resistant furnace black is preferably a medium-high structure super wear-resistant furnace black. In the invention, the particle size of the ultra-wear-resistant furnace black is preferably 14-26 nm. In a specific embodiment of the invention, the ultra-wear-resistant furnace black is carbon black N120.
The super wear-resistant furnace black is selected as one of rubber material fillers, has fine particle size, high surface structure degree, large contact area with rubber and many physical bonding points, and forms a large amount of bonding glue on the surface, so that the heat generation is large and the energy consumption is remarkable when the rubber material is subjected to shear deformation.
Based on the mass parts of the natural rubber, the rubber material provided by the invention comprises 15-30 parts of calcium silicate, preferably 20-28 parts, and particularly preferably 15 parts, 23 parts, 26 parts or 30 parts.
In the invention, the calcium silicate is preferably calcium silicate with the surface modified by a titanate coupling agent; the titanate preferably accounts for 1.5-4% of the calcium silicate, and more preferably 2-3.5%. In the present invention, the mesh number of the calcium silicate is preferably 1250 to 3000 mesh. In a specific embodiment of the present invention, the calcium silicate is preferably modified coated calcium silicate provided by Jiangxi rubstone mineral fiber technologies, inc.
In the invention, calcium silicate is formed by calcining and melting calcium oxide and silicon dioxide at high temperature, and the surface of calcium silicate powder has a large number of hydroxyl groups and is hydrophilic and oleophobic. The invention preferably adopts calcium silicate with the surface modified by the titanate coupling agent, which can reduce the surface energy of the calcium silicate and improve the combination property of the calcium silicate and rubber materials. In the invention, because a large number of micropores exist on the surface of the calcium silicate, after the rubber macromolecular chains enter the micropores, the rubber macromolecular chains can play a role in retarding the movement of the rubber molecular chains in the shearing movement of the rubber material, and play an energy consumption role.
Based on the mass parts of the natural rubber, the rubber material provided by the invention comprises 1.2-1.8 parts of vulcanizing agent, preferably 1.3-1.7 parts, and particularly preferably 1.5 parts, 1.6 parts or 1.7 parts.
In the present invention, the vulcanizing agent preferably includes sulfur and 4,4' -dithiodimorpholine (sulfur donor DTDM); the mass ratio of the sulfur to the sulfur donor DTDM is preferably (1 to 2): 1, more preferably (1 to 1.8): 1, and particularly preferably 1.5:1, 1:1, 1.0:0.6, 1.0:0.7.
Based on the mass parts of the natural rubber, the rubber material provided by the invention comprises 1-2 parts of accelerator, preferably 1.1-1.8 parts, and particularly preferably 1.6 parts, 1.8 parts or 2 parts.
In the present invention, the accelerator preferably includes dibenzothiazyl disulfide and N-cyclohexyl-2-benzothiazole sulfenamide; the mass ratio of the dibenzothiazyl disulfide to the N-cyclohexyl-2-benzothiazole sulfenamide is preferably 1 (1.5-2), more preferably 1 (1.6-1.8), and particularly preferably 0.6:1.0, 0.8:1.2, 0.7:1.3 or 0.6:1.2.
The invention provides a preparation method of the rubber material, which comprises the following steps:
firstly mixing polyisobutylene, calcium silicate, natural rubber and a high damping thermoplastic elastomer to obtain a first mixed material;
the first mixing material, the activating agent, the anti-aging agent, the phenolic resin and the ultra-wear-resistant furnace black are subjected to second mixing and then are subjected to thin-pass to obtain a second mixing material;
and thirdly mixing the second mixing material, the vulcanizing agent and the accelerator to obtain the rubber material.
The invention carries out first mixing on polyisobutylene, calcium silicate, natural rubber and a high damping thermoplastic elastomer to obtain a first mixing material.
In the present invention, the first kneading preferably comprises the steps of:
firstly pre-mixing polyisobutene and silicic acid, and then carrying out first pre-thinning to obtain a first pre-mixed material;
the natural rubber and the high damping thermoplastic elastomer are subjected to second pre-mixing and then second pre-thinning, so that a second pre-mixing material is obtained;
And carrying out the first mixing on the first pre-mixing material and the second pre-mixing material.
The method comprises the steps of carrying out first pre-mixing on polyisobutylene and silicic acid, and then carrying out first pre-thinning to obtain a first pre-mixed material. In the present invention, the first pre-mixing is preferably performed in an internal mixer, and the time of the first pre-mixing is preferably 120 to 180s, more preferably 130 to 160s. In the invention, the first pre-thinning is preferably performed on an open mill, and the roll gap of the first pre-thinning is preferably 0.5-1 mm, more preferably 0.55-0.9 mm; the number of times is preferably 3 to 7 times. The invention preferably prepares the first pre-mixed material through the first pre-mixing after the first pre-mixing of the polyisobutene and the silicic acid, can reduce the viscosity of the polyisobutene, and provides conditions for the subsequent blending with the natural rubber.
According to the invention, natural rubber and a high-damping thermoplastic elastomer are subjected to second pre-mixing and then subjected to second pre-thinning, so that a second pre-mixing material is obtained. In the present invention, the natural rubber is preferably kneaded alone for 75 to 150 seconds, more preferably 80 to 145 seconds, before the second preliminary mixing is performed. In the present invention, the second pre-mixing is preferably performed in an internal mixer, and the time for the second pre-mixing is preferably 60 to 120s, more preferably 70 to 110s. In the invention, the second pre-thinning is preferably performed on an open mill, and the roll gap of the second pre-thinning is preferably 0.5-1 mm, more preferably 0.55-0.9 mm; the times are preferably 4-8 times. The second pre-mixed material is prepared by the second pre-mixing process after the natural rubber and the high-damping thermoplastic elastomer are subjected to second pre-mixing, so that the compatibility of the natural rubber and the high-damping thermoplastic elastomer can be effectively improved, and the natural rubber and the high-damping thermoplastic elastomer are mixed more uniformly.
After the first pre-mixed material and the second pre-mixed material are obtained, the first mixing is carried out on the first pre-mixed material and the second pre-mixed material. In the present invention, the first kneading is preferably performed in an internal mixer, and the time for the first kneading is preferably 75 to 120 seconds, more preferably 80 to 110 seconds.
After the first mixed material is obtained, the first mixed material, the activating agent, the anti-aging agent, the phenolic resin and the ultra-wear-resistant furnace black are subjected to second mixing and then are subjected to thin-pass, so that the second mixed material is obtained.
In the present invention, the second kneading preferably comprises: mixing the first mixing material, the activating agent, the anti-aging agent and the phenolic resin for 30-60 s, and more preferably 35-65 s; and adding super wear-resistant furnace black, and continuously mixing for 60-100 s, preferably 65-95 s. In the present invention, the second kneading is preferably performed in an internal mixer. In the invention, the thin pass is preferably performed on an open mill, and the roll gap of the thin pass is preferably 0.5-1 mm, more preferably 0.55-0.9 mm; the number of times is preferably 3-5 times. The second mixing material is obtained by parking the materials after the macleaya cordata is preferably selected for 8-12 hours.
After the second mixing material is obtained, the second mixing material, the vulcanizing agent and the accelerator are mixed for the third time to obtain the rubber material.
In the present invention, the third kneading is preferably performed in an internal mixer, and the time for the third kneading is preferably 40 to 80 seconds, more preferably 45 to 75 seconds. In the present invention, after the third mixing, the present invention preferably further includes discharging the rubber material obtained by the third mixing onto an open mill, and then, uniformly stamping the rubber material and then, discharging the rubber material into a sheet to obtain a rubber sheet of the rubber material. In the present invention, the shape of the rubber material film is a circle.
The invention provides a shock-absorbing and isolating rubber support structure which comprises a support main body 2. As shown in fig. 4: the support main body 2 comprises an upper seal layer steel plate 2-1 and a lower seal layer steel plate 2-4 which are arranged in parallel; rubber materials 2-2 and a plurality of stiffening steel plates 2-3 which are distributed in the rubber materials 2-2 and are parallel to the upper seal layer steel plates 2-1 and the lower seal layer steel plates 2-4 are filled between the upper seal layer steel plates 2-1 and the lower seal layer steel plates 2-4; the rubber material 2-2 is the rubber material described in the technical scheme or the high damping rubber material prepared by the preparation method described in the technical scheme.
In the present invention, the rubber material is preferably filled in the form of a film between the upper seal layer steel plate 2-1 and the lower seal layer steel plate 2-4. The rubber material sheets and the stiffening steel plates 2-3 are preferably alternately laminated. The upper seal layer steel plate 2-1, the lower seal layer steel plate 2-4, the rubber material film and the stiffening steel plate 2-3 are preferably bonded together through hot vulcanization.
As one or more embodiments of the invention, the rubber material film is round in shape and has a diameter of 420-670 mm; the thickness is 8-13 mm.
As one or more embodiments of the invention, the stiffening steel plate 2-3 is round in shape and 400-650 mm in diameter; the thickness is 3-5 mm.
As one or more embodiments of the present invention, the diameter of the reinforced steel plate is smaller than the diameter of the rubber material film.
As one or more embodiments of the present invention, the rubber material film has a diameter 20mm larger than that of the reinforced steel plate.
In the invention, the height of the support body 2 is 140-220 mm, more preferably 147-216 mm.
In the present invention, the preparation method of the stand body 2 preferably includes the steps of:
derusting the two surfaces of the stiffening steel plate 2-3, the lower surface of the upper seal layer steel plate 2-1 and the upper surface of the lower seal layer steel plate 2-4, and then coating a hot vulcanization adhesive;
and assembling the rubber sheet, the stiffening steel plate 2-3 coated with the hot vulcanization adhesive, the upper seal layer steel plate 2-1 and the lower seal layer steel plate 2-4, and vulcanizing to obtain the support main body 2.
In the present invention, the cured adhesive is preferably a two-component adhesive, specifically, primordial 815 (under coat) and 821 (over coat). The coating is preferably brushing, and the coating thickness of the heat-curable adhesive is preferably 15-25 μm, more preferably 18-23 μm independently. The assembly is preferably carried out in a mould; the vulcanization is preferably carried out in a press vulcanizer; the vulcanization temperature is preferably 130-155 ℃, more preferably 135-150 ℃; the pressure is preferably 10-15 MPa, more preferably 12-14 MPa; the vulcanization time is preferably 230-340 min.
As shown in FIG. 1, the shock-absorbing and insulating rubber support structure provided by the invention preferably further comprises an upper connecting steel plate 1 fixedly connected with the upper sealing layer steel plate 2-1, wherein the area of the upper connecting steel plate 1 is larger than the area of the upper sealing layer steel plate 2-1; the lower connecting steel plate 4 is fixedly connected with the lower sealing layer steel plates 2-4, and the area of the lower connecting steel plate 4 is larger than the area of the lower sealing layer steel plates 2-4; the lower surface of the lower seal layer steel plate 2-4 and the upper surface of the lower connecting steel plate 4 are respectively provided with a first groove and a second groove which are in the same shape and the same size, and the shapes of the first groove and the second groove are circular or elliptical; and a damping steel ring 3 is arranged in a space formed by the first groove and the second groove, and the height of the damping steel ring 3 is the total depth of the first groove and the second groove.
As one or more embodiments of the present invention, the depth of the first groove and the second groove is preferably 10 to 40mm, more preferably 15 to 35mm, independently. The width of the first groove and the second groove is preferably 50-150 mm, more preferably 55-145 mm.
As one or more embodiments of the present invention, the first groove and the second groove are annular in shape, and the outer diameters of the first groove and the second groove are preferably 150-1500 mm, more preferably 155-1450 mm.
As one or more embodiments of the present invention, the damping steel ring 3 is in the shape of a circular ring or an elliptical ring; the thickness of the damping steel ring 3 is preferably 50-150 mm, more preferably 55-145 mm. The damping steel ring 3 is inlaid in the first groove and the second groove at the same time.
As one or more embodiments of the present invention, the damping steel ring 3 has an outer diameter of 350mm, a height of 30mm, and a wall thickness of 70mm.
As one or more embodiments of the present invention, the damping steel ring 3 has an outer diameter of 550mm, a height of 30mm, and a wall thickness of 100mm.
As one or more embodiments of the present invention, the damping steel ring 3 has an outer diameter of 500mm, a height of 32mm, and a wall thickness of 85mm.
As one or more embodiments of the present invention, the damping steel ring 3 has an outer diameter of 600mm, a height of 40mm, and a wall thickness of 110mm.
As one or more embodiments of the present invention, the lower seal layer steel plates 2 to 4 and the lower connection steel plates 4 are preferably fixedly connected by shear pins 5. The shear pins 5 are preferably symmetrically arranged at the edge positions of the plate surfaces of the lower seal layer steel plates 2-4, and the shear pins 5 are simultaneously embedded in the lower seal layer steel plates 2-4 and the lower connecting steel plates 4.
As one or more embodiments of the present invention, the number of the shear pins 5 is preferably 4 or 2.
As shown in fig. 5, in the shock-absorbing and insulating rubber support structure in the prior art, the lower connection steel plate 4 and the lower seal layer steel plate 2-4 are fixedly connected by bolts 9, so that the lower connection steel plate 4 and the lower seal layer steel plate 2-4 cannot slide relatively. According to the invention, the lower seal layer steel plates 2-4 and the lower connecting steel plates 4 are fixedly connected by the shear pins 5, so that when the horizontal counter force generated by the support main body 2 is large enough, the shear pins 5 between the lower connecting steel plates 4 and the lower seal layer steel plates 2-4 are sheared, the support main body 2 slides on the lower connecting steel plates 4, on one hand, the damping steel rings 3 are extruded in the sliding process, the energy consumption and the shock absorption effects are realized, and on the other hand, the shearing deformation of the support main body 2 is partially recovered, so that the effect of large displacement deformation is realized.
As one or more embodiments of the present invention, the shear pin 5 is cylindrical in shape, and the bottom surface diameter is 13-48 mm.
As one or more embodiments of the present invention, the shear pin 5 has a cylindrical shape and a bottom diameter of 13mm.
As one or more embodiments of the present invention, the shear pin 5 has a cylindrical shape and a bottom diameter of 48mm.
As one or more embodiments of the present invention, the shear pin 5 has a cylindrical shape and a bottom surface diameter of 18mm.
As one or more embodiments of the present invention, the shear pin 5 is cylindrical in shape and has a bottom surface diameter of 38mm.
As one or more embodiments of the present invention, the upper seal layer steel plate 2-1 and the upper connection steel plate 1 are preferably fixedly connected by bolts 9. The fixing holes of the bolts 9 on the upper seal layer steel plate 2-1 are preferably symmetrically arranged at the edge position of the plate surface of the upper seal layer steel plate 2-1.
In the present invention, the bolts 9 include a connecting bolt and an anchor bolt. As shown in fig. 1: in the structure of the large-displacement high-energy-consumption shock-absorbing and isolating rubber support, the connecting bolts are used for fixedly connecting the upper connecting steel plate 1 and the upper sealing layer steel plate 2-1; the anchor bolts are used for fixedly connecting the upper connecting steel plate 1 with the upper embedded steel plate 10 and the lower connecting steel plate 4 with the lower embedded steel plate 11. As shown in fig. 5: in the high damping vibration isolation rubber support structure of the bridge, which is provided by the prior art, a connecting bolt is used for fixedly connecting an upper connecting steel plate 1 with an upper sealing layer steel plate 2-1, and a lower connecting steel plate 4 with an upper sealing layer steel plate 2-4; the anchor bolts are used for fixedly connecting the upper connecting steel plate 1 with the upper embedded steel plate 10 and the lower connecting steel plate 4 with the lower embedded steel plate 11.
As one or more embodiments of the present invention, the shape of the lower connection steel plate 4 and the lower seal layer steel plate 2-4 is rectangular, and the upper surface of the lower connection steel plate 4 is provided with 2 first baffles 6 and 2 second baffles 7 corresponding to each other around four sides of the lower seal layer steel plate 2-4; the 2 first baffle plates 6 are arranged along the direction that the lower seal layer steel plates 2-4 relatively slide on the upper surface of the lower connecting steel plate 4; the cross section of the 2 first baffle plates 6 is in an inverted L shape, the opening direction of the 2 first baffle plates 6 faces the lower seal layer steel plates 2-4, and the transverse edges of the 2 first baffle plates 6 extend into the upper surfaces of the lower seal layer steel plates 2-4, so that the lower seal layer steel plates 2-4 are pressed down on the upper surfaces of the lower connecting steel plates 4.
As one or more embodiments of the present invention, the first baffle 6 is in an inverted L shape formed by a vertical side and a horizontal side, and the horizontal side extends into the upper surface of the lower seal layer steel plate 2-4; the vertical edge is fixedly connected with the lower connecting steel plate 4 through bolts.
As one or more embodiments of the present invention, the second baffle 7 is located near the edge of the lower connection steel plate 4, and the second baffle 7 is fixedly connected to the lower connection steel plate 4 by bolts.
As one or more embodiments of the present invention, the edge of the plate surface of the lower connecting steel plate 4 is provided with a fixing hole of a bolt 9, and the bolt 9 is used for fixedly connecting the lower connecting steel plate 4 to the lower pre-buried steel plate 11.
As one or more embodiments of the present invention, the upper connection steel plate 1 is fixedly connected with the upper pre-buried steel plate 10 by bolts 9.
As one or more embodiments of the present invention, the upper pre-buried steel plate 10 is fixed to the bottom surface of the girder end through an upper anchor rod 12-1, and the lower pre-buried steel plate 11 is fixed to the bolster of the pier through a lower anchor rod 12-2.
As one or more embodiments of the present invention, the upper anchor rod 12-1 is sleeved in the upper sleeve 8-1.
As one or more embodiments of the present invention, the lower anchor rod 12-2 is sleeved in the lower sleeve 8-2.
In the normal service process of the support structure, the length of the beam body is changed due to temperature change and other reasons, so that the support main body 2 generates small displacement level shear strain for meeting the beam body deformation requirement; when strong earthquake occurs, the support main body 2 needs to generate larger displacement, firstly, the support generates shear strain, when the horizontal counter force generated by the support main body 2 is large enough, the shear pin 5 between the lower connecting steel plate 4 and the lower sealing layer steel plates 2-4 is sheared, the support main body 2 slides on the lower connecting steel plate 4, on one hand, the damping steel ring is extruded in the sliding process to play a role of energy consumption and shock absorption, and on the other hand, the shear deformation of the support is partially recovered, so that the large displacement deformation is realized, and the first baffle plates 6 are arranged at the two ends of the lower connecting steel plate 4 parallel to the sliding direction to limit the support main body and prevent the large shear deformation lower support main body from rolling; second baffles 7 are arranged at two ends of the lower connecting steel plate 4 in the vertical sliding direction to prevent the support from sliding out of the lower connecting steel plate 4.
The technical solutions provided by the present invention are described in detail below in conjunction with examples for further illustrating the present invention, but they should not be construed as limiting the scope of the present invention.
In the following examples, the polyisobutylene used in example 1 was the product of China petrochemical company, which was designated PIB-YS400, the polyisobutylene used in example 2 was the product of China petrochemical company, which was designated PIB-YS580, the polyisobutylene used in example 3 was the product of China petrochemical company, which was designated PIB-S680, and the polyisobutylene used in example 4 was the product of China petrochemical company, which was designated PIB-YS 850; the high damping thermoplastic elastomer used in examples 1 to 4 was a DTPR2075 product available from Beijing Yanshan division of petrochemical Co., ltd; the phenolic resin used in examples 1-4 was a model KPT-F8140S product available from Kelong chemical industry (Suzhou) Co., ltd; the ultra-wear-resistant furnace black used in examples 1-4 is carbon black N120; the calcium silicate used in examples 1 to 4 is modified coated calcium silicate provided by Jiangxi whetstone mineral fiber technology Co., ltd; the cured adhesives used in examples 1-4 were two-component adhesives, specifically, primordial 815 (under coat) and 821 (over coat).
Example 1
Putting 30 parts of polyisobutene and 15 parts of calcium silicate into an internal mixer, mixing for 125 seconds, then carrying out thin pass on an open mill for 4 times, wherein the roll gap is 0.6mm, obtaining primary mixed rubber, and standing for later use;
Adding 64 parts of natural rubber into an internal mixer, mixing for 95s, adding 30 parts of high-damping thermoplastic elastomer, mixing for 80s, and then carrying out thin pass on an open mill for 6 times, wherein the roll gap is 0.6mm, so as to obtain secondary rubber compound;
putting the primary rubber compound and the secondary rubber compound into an internal mixer, mixing for 90 seconds, adding 5 parts of zinc oxide, 3 parts of stearic acid, 1.5 parts of age resistor RD, 2 parts of age resistor MC and 9 parts of phenolic resin, mixing for 55 seconds, adding 55 parts of carbon black N120, mixing for 86 seconds, discharging rubber onto an open mill, carrying out thin pass for 4 times, and standing for 10 hours to obtain the secondary rubber compound;
adding the secondary rubber compound into an internal mixer, simultaneously adding 0.9 part of sulfur, 0.6 part of sulfur donor DTDM, 0.6 part of accelerator dibenzothiazyl disulfide and 1.0 part of accelerator N-cyclohexyl-2-benzothiazole sulfenamide, mixing for 60 seconds, discharging the rubber to an open mill, and uniformly tamping the rubber compound and then discharging the rubber compound for standby use to obtain the high-damping rubber compound film with the diameter of 420mm and the thickness of 8mm.
Derusting the surfaces of a stiffening steel plate 2-3 (with the diameter of 400mm and the thickness of 3 mm), an upper seal layer steel plate 2-1 and a lower seal layer steel plate 2-4, and then brushing a hot vulcanization adhesive, wherein the brushing thickness is 22 mu m;
and (3) placing the prepared 10 pieces of high-damping rubber compound sheets, the stiffening steel plates 2-3 (9 pieces) coated with the hot vulcanization adhesive, the upper seal layer steel plates 2-1 and the lower seal layer steel plates 2-4 into a mould for assembly, vulcanizing in a flat vulcanizing machine, wherein the height of the produced high-damping support body is 147mm, the vulcanizing temperature is set to 135 ℃, the pressure is set to 10MPa, and the vulcanizing time is 353min.
The embodiment is assembled according to the structural schematic diagram of the shock-absorbing and isolating rubber support shown in fig. 1: the damping steel ring used for the standard support in the embodiment has the outer diameter of 350mm, the wall thickness of 70mm, the height of 30mm and the diameter of the shear pin of 13mm.
Example 2
Putting 36 parts of polyisobutene and 23 parts of calcium silicate into an internal mixer, mixing for 130s, then carrying out thin pass on an open mill for 6 times, wherein the roll gap is 0.8mm, obtaining primary mixed rubber, and standing for later use;
putting 70 parts of natural rubber into an internal mixer, mixing for 100s, adding 25 parts of high-damping thermoplastic elastomer, mixing for 75s, and then carrying out thin pass 7 times on an open mill, wherein the roll gap is 0.5mm, so as to obtain secondary rubber compound;
putting the secondary rubber compound and the secondary rubber compound into an internal mixer, mixing for 90 seconds, adding 6 parts of zinc oxide, 4 parts of stearic acid, 2 parts of age resistor RD, 2 parts of age resistor MC and 8 parts of phenolic resin, mixing for 50 seconds, adding 65 parts of carbon black N120, mixing for 80 seconds, discharging rubber onto an open mill, carrying out thin pass for 5 times, and standing for 8 hours to obtain the secondary rubber compound;
adding the secondary rubber compound into an internal mixer, simultaneously adding 0.8 part of sulfur, 0.8 part of sulfur donor DTDM, 0.8 part of accelerator dibenzothiazyl disulfide and 1.2 parts of accelerator N-cyclohexyl-2-benzothiazole sulfenamide, mixing for 50 seconds, discharging the rubber to an open mill, and uniformly tamping the rubber compound and then discharging the rubber compound for standby use to obtain the high-damping rubber compound film with the diameter of 620mm and the thickness of 10mm.
Derusting the surfaces of a stiffening steel plate 2-3 (with the diameter of 600mm and the thickness of 5 mm), an upper seal layer steel plate 2-1 and a lower seal layer steel plate 2-4, and then brushing a hot vulcanization adhesive, wherein the brushing thickness is 20 mu m;
10 pieces of prepared high-damping rubber compound sheets, a stiffening steel plate 2-3 (9 pieces) coated with a hot vulcanization adhesive, an upper seal layer steel plate 2-1 and a lower seal layer steel plate 2-4 are put into a mould to be assembled, vulcanized in a flat vulcanizing machine, the height of the produced high-damping support body is 196mm, the vulcanization temperature is set to 140 ℃, the pressure is set to 11MPa, and the vulcanization time is 235min;
the embodiment is assembled according to the structural schematic diagram of the shock-absorbing and isolating rubber support shown in fig. 1: the damping steel ring used for the standard support in the embodiment has the outer diameter of 550mm, the wall thickness of 100mm, the height of 30mm and the diameter of the shear pin of 48mm.
Example 3
Putting 42 parts of polyisobutene and 26 parts of calcium silicate into an internal mixer, mixing for 160 seconds, then carrying out thin pass on an open mill for 4 times, wherein the roll gap is 0.9mm, obtaining primary mixed rubber, and standing for later use;
putting 70 parts of natural rubber into an internal mixer, mixing for 100s, adding 25 parts of high-damping thermoplastic elastomer, mixing for 75s, and then carrying out thin pass 7 times on an open mill, wherein the roll gap is 0.5mm, so as to obtain secondary rubber compound;
Putting the secondary rubber compound and the secondary rubber compound into an internal mixer, mixing for 110 seconds, adding 5 parts of zinc oxide, 4 parts of stearic acid, 2 parts of age resistor RD, 2.5 parts of age resistor MC and 10 parts of phenolic resin, mixing for 60 seconds, adding 70 parts of carbon black N120, mixing for 85 seconds, discharging rubber onto an open mill, carrying out thin pass for 4 times, and standing for 12 hours to obtain the secondary rubber compound;
putting the secondary rubber compound into an internal mixer, simultaneously adding 1.0 part of sulfur, 0.6 part of sulfur donor DTDM, 0.7 part of accelerator dibenzothiazyl disulfide and 1.3 parts of accelerator N-cyclohexyl-2-benzothiazole sulfenamide, mixing for 50 seconds, discharging rubber onto an open mill, uniformly tamping the rubber compound, and discharging the rubber compound for standby use to obtain the high-damping rubber compound rubber sheet with the diameter of 570mm and the thickness of 10mm.
Derusting the surfaces of a stiffening steel plate 2-3 (with the diameter of 550mm and the thickness of 4 mm), an upper seal layer steel plate 2-1 and a lower seal layer steel plate 2-4, and then brushing a hot vulcanization adhesive, wherein the brushing thickness is 18 mu m;
10 pieces of prepared high-damping rubber compound sheets, a stiffening steel plate 2-3 (9 pieces) coated with a hot vulcanization adhesive, an upper seal layer steel plate 2-1 and a lower seal layer steel plate 2-4 are put into a mould to be assembled, vulcanized in a flat vulcanizing machine, the height of the produced high-damping support body is 177mm, the vulcanization temperature is set to 135 ℃, the pressure is set to 12MPa, and the vulcanization time is 336min;
The embodiment is assembled according to the structural schematic diagram of the shock-absorbing and isolating rubber support shown in fig. 1: the damping steel ring used for the standard support in the embodiment has the outer diameter of 500mm, the wall thickness of 85mm, the height of 32mm and the diameter of the shear pin of 18mm.
Example 4
Putting 50 parts of polyisobutene and 30 parts of calcium silicate into an internal mixer, mixing for 168s, then carrying out thin pass 7 times on an open mill, wherein the roll gap is 1.0mm, obtaining primary mixed rubber, and standing for later use;
adding 60 parts of natural rubber into an internal mixer, mixing for 100s, adding 40 parts of high-damping thermoplastic elastomer, mixing for 110s, and then carrying out thin pass 8 times on an open mill, wherein the roll gap is 1.0mm, so as to obtain secondary rubber compound;
putting the secondary rubber compound and the secondary rubber compound into an internal mixer, mixing for 116 seconds, adding 4 parts of zinc oxide, 5 parts of stearic acid, 2.5 parts of an anti-aging agent RD, 2.5 parts of an anti-aging agent MC and 10 parts of phenolic resin, mixing for 60 seconds, adding 60 parts of carbon black N120, mixing for 90 seconds, discharging rubber onto an open mill, carrying out thin pass for 4 times, and standing for 12 hours to obtain the secondary rubber compound;
putting the secondary rubber compound into an internal mixer, simultaneously adding 1.0 part of sulfur, 0.7 part of sulfur donor DTDM, 0.6 part of accelerator dibenzothiazyl disulfide and 1.2 parts of accelerator N-cyclohexyl-2-benzothiazole sulfenamide, mixing for 50 seconds, discharging rubber onto an open mill, uniformly tamping the rubber compound, and discharging the rubber compound for standby use to obtain the high-damping rubber compound rubber sheet with the diameter of 670mm and the thickness of 13mm.
Derusting the surfaces of a stiffening steel plate 2-3 (with the diameter of 650mm and the thickness of 4 mm), an upper seal layer steel plate 2-1 and a lower seal layer steel plate 2-4, and then brushing a hot vulcanization adhesive, wherein the brushing thickness is 25 mu m;
10 pieces of prepared high-damping rubber compound sheets, a stiffening steel plate 2-3 (9 pieces) coated with a hot vulcanization adhesive, an upper seal layer steel plate 2-1 and a lower seal layer steel plate 2-4 are put into a mould to be assembled, vulcanized in a flat vulcanizing machine, the height of the produced high-damping support body is 216mm, the vulcanization temperature is set to 130 ℃, the pressure is set to 15MPa, and the vulcanization time is 532min;
the embodiment is assembled according to the structural schematic diagram of the shock-absorbing and isolating rubber support shown in fig. 1: the damping steel ring used for the standard support in the embodiment has the outer diameter of 600mm, the wall thickness of 110mm, the height of 40mm and the diameter of the shear pin of 38mm.
Comparative example 1
Adding 60 parts of natural rubber into an internal mixer, mixing for 100s, adding 40 parts of high-damping thermoplastic elastomer, mixing for 110s, and then carrying out thin pass 8 times on an open mill, wherein the roll gap is 1.0mm, so as to obtain primary mixed rubber;
adding 30 parts of calcium silicate and primary rubber compound into an internal mixer, mixing for 116 seconds, adding 4 parts of zinc oxide, 5 parts of stearic acid, 2.5 parts of an anti-aging agent RD, 2.5 parts of an anti-aging agent MC and 10 parts of phenolic resin, mixing for 60 seconds, adding 60 parts of carbon black N120, mixing for 90 seconds, discharging rubber onto an open mill, carrying out thin pass for 4 times, and standing for 12 hours to obtain secondary rubber compound;
Putting the secondary rubber compound into an internal mixer, simultaneously adding 1.0 part of sulfur, 0.7 part of sulfur donor DTDM, 0.6 part of accelerator dibenzothiazyl disulfide and 1.2 parts of accelerator N-cyclohexyl-2-benzothiazole sulfenamide, mixing for 50 seconds, discharging rubber onto an open mill, uniformly tamping the rubber compound, and discharging the rubber compound for standby use to obtain the high-damping rubber compound rubber sheet with the diameter of 670mm and the thickness of 13mm.
Derusting the surfaces of a stiffening steel plate 2-3 (with the diameter of 650mm and the thickness of 4 mm), an upper seal layer steel plate 2-1 and a lower seal layer steel plate 2-4, and then brushing a hot vulcanization adhesive, wherein the brushing thickness is 25 mu m;
10 pieces of prepared high-damping rubber compound sheets, a stiffening steel plate 2-3 (9 pieces) coated with a hot vulcanization adhesive, an upper seal layer steel plate 2-1 and a lower seal layer steel plate 2-4 are put into a mould to be assembled, vulcanized in a flat vulcanizing machine, the height of the produced high-damping support body is 216mm, the vulcanization temperature is set to 130 ℃, the pressure is set to 15MPa, and the vulcanization time is 532min;
this comparative example was assembled according to the schematic diagram of the structure of the shock-absorbing and insulating rubber support shown in fig. 1: wherein the damping steel ring used for the support of the comparative example specification has the outer diameter of 600mm, the wall thickness of 110mm, the height of 40mm and the diameter of the shear pin of 38mm.
Comparative example 2
Putting 42 parts of polyisobutene and 26 parts of calcium silicate into an internal mixer, mixing for 160 seconds, then carrying out thin pass on an open mill for 4 times, wherein the roll gap is 0.9mm, obtaining primary mixed rubber, and standing for later use;
putting 70 parts of natural rubber into an internal mixer, mixing for 100s, and then carrying out thin pass 7 times on an open mill, wherein the roll gap is 0.5mm, so as to obtain secondary mixing rubber;
putting the secondary rubber compound and the secondary rubber compound into an internal mixer, mixing for 110 seconds, adding 5 parts of zinc oxide, 4 parts of stearic acid, 2 parts of age resistor RD, 2.5 parts of age resistor MC and 10 parts of phenolic resin, mixing for 60 seconds, adding 70 parts of carbon black N120, mixing for 85 seconds, discharging rubber onto an open mill, carrying out thin pass for 4 times, and standing for 12 hours to obtain the secondary rubber compound;
putting the secondary rubber compound into an internal mixer, simultaneously adding 1.0 part of sulfur, 0.6 part of sulfur donor DTDM, 0.7 part of accelerator dibenzothiazyl disulfide and 1.3 parts of accelerator N-cyclohexyl-2-benzothiazole sulfenamide, mixing for 50 seconds, discharging rubber onto an open mill, uniformly tamping the rubber compound, and discharging the rubber compound for standby use to obtain the high-damping rubber compound rubber sheet with the diameter of 570mm and the thickness of 10mm.
Derusting the surfaces of a stiffening steel plate 2-3 (with the diameter of 550mm and the thickness of 4 mm), an upper seal layer steel plate 2-1 and a lower seal layer steel plate 2-4, and then brushing a hot vulcanization adhesive, wherein the brushing thickness is 18 mu m;
10 pieces of prepared high-damping rubber compound sheets, a stiffening steel plate 2-3 (9 pieces) coated with a hot vulcanization adhesive, an upper seal layer steel plate 2-1 and a lower seal layer steel plate 2-4 are put into a mould to be assembled, vulcanized in a flat vulcanizing machine, the height of the produced high-damping support body is 177mm, the vulcanization temperature is set to 135 ℃, the pressure is set to 12MPa, and the vulcanization time is 336min;
this comparative example was assembled according to the schematic diagram of the structure of the shock-absorbing and insulating rubber support shown in fig. 1: wherein the damping steel ring used for the support of the comparative example specification has the outer diameter of 500mm, the wall thickness of 85mm, the height of 32mm and the diameter of the shear pin of 18mm.
Comparative example 3
Putting 30 parts of polyisobutene and 15 parts of calcium silicate into an internal mixer, mixing for 125 seconds, then carrying out thin pass on an open mill for 4 times, wherein the roll gap is 0.6mm, obtaining primary mixed rubber, and standing for later use;
adding 64 parts of natural rubber into an internal mixer, mixing for 95s, adding 30 parts of high-damping thermoplastic elastomer, mixing for 80s, and then carrying out thin pass on an open mill for 6 times, wherein the roll gap is 0.6mm, so as to obtain secondary rubber compound;
putting the primary rubber compound and the secondary rubber compound into an internal mixer, mixing for 90 seconds, adding 5 parts of zinc oxide, 3 parts of stearic acid, 1.5 parts of age resistor RD, 2 parts of age resistor MC and 9 parts of phenolic resin, mixing for 55 seconds, adding 55 parts of carbon black N120, mixing for 86 seconds, discharging rubber onto an open mill, carrying out thin pass for 4 times, and standing for 10 hours to obtain the secondary rubber compound;
Adding the secondary rubber compound into an internal mixer, simultaneously adding 0.9 part of sulfur, 0.6 part of sulfur donor DTDM, 0.6 part of accelerator dibenzothiazyl disulfide and 1.0 part of accelerator N-cyclohexyl-2-benzothiazole sulfenamide, mixing for 60 seconds, discharging the rubber to an open mill, and uniformly tamping the rubber compound and then discharging the rubber compound for standby use to obtain the high-damping rubber compound film with the diameter of 420mm and the thickness of 8mm.
Derusting the surfaces of a stiffening steel plate 2-3 (with the diameter of 400mm and the thickness of 3 mm), an upper seal layer steel plate 2-1 and a lower seal layer steel plate 2-4, and then brushing a hot vulcanization adhesive, wherein the brushing thickness is 22 mu m;
and (3) placing the prepared 10 pieces of high-damping rubber compound sheets, the stiffening steel plates 2-3 (9 pieces) coated with the hot vulcanization adhesive, the upper seal layer steel plates 2-1 and the lower seal layer steel plates 2-4 into a mould for assembly, vulcanizing in a flat vulcanizing machine, wherein the height of the produced high-damping support body is 147mm, the vulcanizing temperature is set to 135 ℃, the pressure is set to 10MPa, and the vulcanizing time is 353min.
This comparative example is assembled according to the present bridge high damping shock insulation rubber bearing structure shown in fig. 5: the dimensions of the shock absorbing and insulating rubber mount structure are the same as those of example 1 except for the damping steel rings and the shear pins.
Test example 1
Performance tests were performed on the shock-insulating rubber support structures prepared in examples 1 to 5 and comparative example 1. Wherein, the measuring method of the equivalent damping ratio refers to 6.6.3 in the highway bridge high damping shock insulation rubber support (JT/T842-2012); the method for measuring the limit shear strain is 6.6.4 in the highway bridge high damping shock insulation rubber support (JT/T842-2012).
Table 1 test results of structural Performance of shock-insulating rubber supports prepared in examples 1 to 4 and comparative examples 1 to 3
| Project | Example 1 | Example 2 | Example 3 | Example 4 | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| Equivalent damping ratio | 19.37% | 20.62% | 20.73% | 19.89% | 14.53％ | 15.47％ | 20.67% |
| Ultimate shear strain | 420% | 430% | 425% | 450% | 442％ | 431% | 356% |
As can be seen from Table 1, compared with comparative examples 1-3, the rubber materials prepared in examples 1-4 of the present invention have the advantage of high damping ratio, and the shock absorbing and insulating rubber support structure can realize larger displacement deformation of the rubber support.
Although the foregoing embodiments have been described in some, but not all embodiments of the invention, other embodiments may be obtained according to the present embodiments without departing from the scope of the invention.
Claims (5)
1. The shock-absorbing and isolating rubber support structure is characterized by comprising a support main body (2); the support main body (2) comprises an upper seal layer steel plate (2-1) and a lower seal layer steel plate (2-4) which are arranged in parallel; rubber materials (2-2) and a plurality of stiffening steel plates (2-3) which are distributed in the rubber materials (2-2) and are parallel to the upper seal layer steel plates (2-1) and the lower seal layer steel plates (2-4) are filled between the upper seal layer steel plates (2-1) and the lower seal layer steel plates (2-4); the rubber material (2-2) comprises the following components in parts by mass: 50-70 parts of natural rubber, 30-50 parts of polyisobutene, 20-40 parts of high-damping thermoplastic elastomer, 6-12 parts of activating agent, 3-5 parts of anti-aging agent, 5-10 parts of phenolic resin, 50-70 parts of super wear-resistant furnace black, 15-30 parts of calcium silicate, 1.2-1.8 parts of vulcanizing agent and 1-2 parts of accelerator; the viscosity average molecular weight of the polyisobutene is 100-850 ten thousand; the high damping thermoplastic elastomer is a triblock polymer having polystyrene end caps and an ethylene branched polydiene mid-section; the calcium silicate is calcium silicate with the surface modified by a titanate coupling agent; the mass of the titanate accounts for 1.5-4% of the mass of the calcium silicate, and the anti-aging agent comprises N- (4-anilinophenyl) maleimide and an anti-aging agent RD; the mass ratio of the N- (4-anilinophenyl) maleimide to the anti-aging agent RD is (1-2) 1; the vulcanizing agent comprises sulfur and 4,4' -dithiodimorpholine; the mass ratio of the sulfur to the 4,4' -dithiodimorpholine is (1-2) 1;
The shock-absorbing and insulating rubber support structure further comprises an upper connecting steel plate (1) fixedly connected with the upper sealing layer steel plate (2-1), wherein the area of the upper connecting steel plate (1) is larger than the area of the upper sealing layer steel plate (2-1);
the lower connecting steel plate (4) is fixedly connected with the lower sealing layer steel plate (2-4), and the area of the lower connecting steel plate (4) is larger than the area of the lower sealing layer steel plate (2-4); the lower seal layer steel plates 2-4 are fixedly connected with the lower connecting steel plates 4 through shear pins 5;
the lower surface of the lower seal layer steel plate (2-4) and the upper surface of the lower connecting steel plate (4) are respectively provided with a first groove and a second groove which are in the same shape and the same size, and the shapes of the first groove and the second groove are circular or elliptical; damping steel rings (3) are arranged in a space formed by the first grooves and the second grooves, and the height of each damping steel ring (3) is equal to the total depth of the first grooves and the second grooves.
2. The shock absorbing rubber mount structure of claim 1, wherein the activator comprises zinc oxide and stearic acid; the mass ratio of the zinc oxide to the stearic acid is (4-7) to (2-5).
3. The shock absorbing rubber mount structure according to claim 1, wherein the accelerator comprises dibenzothiazyl disulfide and N-cyclohexyl-2-benzothiazole sulfenamide; the mass ratio of the dibenzothiazyl disulfide to the N-cyclohexyl-2-benzothiazole sulfenamide is 1 (1.5-2).
4. A shock absorbing and insulating rubber support structure according to any one of claims 1 to 3, characterized in that the preparation method of the rubber material (2-2) comprises the steps of:
firstly mixing polyisobutylene, calcium silicate, natural rubber and a high damping thermoplastic elastomer to obtain a first mixed material;
the first mixing material, the activating agent, the anti-aging agent, the phenolic resin and the ultra-wear-resistant furnace black are subjected to second mixing and then are subjected to thin-pass to obtain a second mixing material;
and thirdly mixing the second mixing material, the vulcanizing agent and the accelerator to obtain the rubber material (2-2).
5. The shock absorbing and insulating rubber support structure according to claim 1, wherein the shape of the lower connecting steel plate (4) and the lower sealing layer steel plate (2-4) is rectangular, and the upper surface of the lower connecting steel plate (4) is provided with 2 first baffle plates (6) and 2 second baffle plates (7) which are mutually corresponding around four sides of the lower sealing layer steel plate (2-4); the 2 first baffles (6) are arranged along the direction that the lower seal layer steel plates (2-4) slide relatively on the upper surface of the lower connecting steel plates (4); the cross section shape of the 2 first baffle plates (6) is in an inverted L shape, the opening direction of the 2 first baffle plates (6) faces to the lower seal layer steel plate (2-4), and the transverse edges of the 2 first baffle plates (6) extend into the upper surface of the lower seal layer steel plate (2-4), so that the lower seal layer steel plate (2-4) is pressed down on the upper surface of the lower connecting steel plate (4).
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