CN106751068B - A kind of low modulus high damping rubber for building and preparation method thereof - Google Patents

A kind of low modulus high damping rubber for building and preparation method thereof Download PDF

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CN106751068B
CN106751068B CN201611206807.6A CN201611206807A CN106751068B CN 106751068 B CN106751068 B CN 106751068B CN 201611206807 A CN201611206807 A CN 201611206807A CN 106751068 B CN106751068 B CN 106751068B
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rubber
parts
damping
low modulus
antioxidant
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CN106751068A (en
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李波
陆飞
吴建邺
赵晓华
陈黎明
邱阳
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Jiangyin Haida Rubber and Plastic Co Ltd
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    • C08L23/26—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
    • C08L23/28—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment by reaction with halogens or compounds containing halogen
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    • C08K3/38—Boron-containing compounds
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    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2296—Oxides; Hydroxides of metals of zinc
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    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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    • C08K2003/387—Borates
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Abstract

The present invention relates to low modulus high damping rubber for building, raw material includes raw rubber matrix, carbon black, plasticizer, fire retardant, damp filler, anti-aging agent, antioxidant, crosslinking agent, raw rubber matrix is halogenated butyl rubber, including chlorinated scoline, brombutyl, and damping filler is that graphene, fatty acid metal salts or both are used in combination.First using open mill or mixer by raw rubber matrix logical 5-10 times thin, carbon black, plasticizer, fire retardant, anti-aging agent, antioxidant, damping filler are sequentially added in proportion with crosslinking agent and are uniformly mixed；When adding antioxidant, melting temperature control is controlled at 70 DEG C in 100-120 DEG C, the melting temperature of remaining time hereinafter, overall mixing time was controlled at 10-20 minutes；Then appropriate rubber compound is put into corresponding mould, the sulfidization molding in vulcanizing press.For hardness in 35 to 40 Shao A, horizontal rigidity is low, will not reduce isolating affection while the rubber of the low modulus of high-damping has high-damping.

Description

A kind of low modulus high damping rubber for building and preparation method thereof
Technical field
The present invention relates to a kind of low modulus high damping rubber for building and its preparation methods of compression molding, are suitable for preparation The high-damping shock isolating pedestal for building of low shear modulus.
Background technique
Earthquake is a kind of great randomness natural calamity of harmfulness, and what earthquake brought the mankind is huge calamity It is difficult；Current state-of-the-art Base Isolation Technology is by damping rubber support for building, by top-out structure and lower part ground Structure isolation.The basic principle of damping rubber support shock insulation for building is to make whole building by adding rubber earthquake isolation support Natural vibration period is extended, to mitigate the earthquake response of superstructure.Common practices is that rubber vibration isolation is arranged in building bottom Support forms flexible Seismic Isolation of Isolation Layer together using the horizontal flexibility of rubber earthquake isolation support, is absorbed by flexible Seismic Isolation of Isolation Layer and dissipate ground Energy is shaken, transmitting of the seismic energy to superstructure is prevented and mitigate, is finally reached the purpose for mitigating superstructure eaerthquake damage.
Rubber earthquake isolation support for building used on Base Isolation Technology mainly has 3 seed types at present: common natural Rubber earthquake isolation support, the lead rubber bearings and high-damping rubber shock isolating pedestal for adding lead for retractable pencil.Wherein containing the rubber of lead for retractable pencil Shock isolating pedestal is most commonly seen, and lead rubber laminated bearing is formed and pouring into lead for retractable pencil in common natural rubber support, this kind Support takes full advantage of the lower surrender shearing force of lead for retractable pencil and higher initial shear rigidity, damping are obvious.But it tests Research has shown that rubber that it is used at low temperature there is rapid curing phenomenon, and a large amount of research is also indicated that in temperature and traffic Load (low-cycle fatigue), which acts on the lead for retractable pencil in undersetting, will generate tired failure by shear, drop the damping capacity of support significantly Low, its damping substantially reduces by 25% after 5000 sub-level thin tail sheep low-cycle loadings；Lead for retractable pencil laminated rubber damping bearing exists simultaneously In production and use process, lead will cause the pollution that can not be made up to environment.Rubber is caused to crack in use, outside lead for retractable pencil Dew, will also can cause environmental pollution, while it is also greatly affected using function.What exploitation was had excellent performance is free of lead for retractable pencil High-damping rubber shock isolating pedestal is imperative.
The morphosis of rubber has conclusive influence to its damping capacity.In general purpose rubber, butyl rubber and butyronitrile The damped coefficient of rubber is larger, butadiene-styrene rubber, neoprene, silicon rubber, polyurethane rubber, EP rubbers damped coefficient in Deng the damped coefficient minimum of natural rubber and butadiene rubber.Although natural rubber damped coefficient is smaller, its comprehensive performance is most Good, fatigue durability is good, and heat is low, creep is small, good with metalwork bond properties.Therefore, natural rubber is widely used in preparation Shock isolating pedestal.A kind of wide temperature zone high damping rubber composition and preparation method thereof is described in patent " CN102675705A ".It should The matrix of kind rubber composition is that natural rubber, isoprene rubber and butadiene rubber three are used in combination, and it is strong to lead to the addition magnesium in blend compounds Powder and C5 promote the damping capacity of the rubber material with C9 Petropols, and use low temperature long-time vulcanization.Patent A kind of preparation method of wide temperature range broadband high-damping rubber material is described in " CN 102775659A "；Wherein with epoxidation Natural rubber is matrix, using the multi-walled carbon nanotube of acidification as improvement of damping agent, using phenolic resin as vulcanizing agent.Patent " damping Support high-intensity high-damping rubber composite material ", disclose high-damping rubber under a kind of big strain of shock mount room temperature low frequency Glue composite material.The invention, which for the first time combines carbon nanotube as nanometer damping material with Petropols, to be added in rubber, substantially Degree improves damping capacity of the rubber under seismic condition i.e. low frequency (1Hz) greatly strain (50%-100%).
Butyl rubber (IIR) due on its strand pending methyl group it is very intensive, formed vermicular texture, thus have it is higher Fissipation factor；And due to the macromolecular chain of IIR near glass transition temperature there is secondary transition, lead to its damping and amortization Other rubber can be apparently higher than, it is not only high but also wide to show as its Internal Friction Peak.But the curingprocess rate of IIR is slow, with high unsaturated rubber Compatibility is not high, and stickiness is poor together from stickiness, therefore chlorinated scoline (CIIR) and brombutyl (BIIR) are obtained Relatively broad application is arrived.Patent " 102030951A " discloses a kind of preparation method of chlorinated butyl rubber damping material, C5/C9 copolymerized petroleum resin is added, and in chlorinated scoline to carry sulphur body post-cure molding.
Although above-mentioned rubber material belongs to damping material scope, it is unsuitable for as high-damping shock insulation branch for building The rubber material of seat.The hardness of rubber material used by high-damping shock isolating pedestal for building is answered relatively low(Shao 35-40 A, it is right The horizontal shear modulus for answering support is 0.32-0.4G) so that rubber support has lower horizontal rigidity, to have more Good function of shock insulation.It, can be whole because improving although the raising of rubber material hardness can promote damped coefficient (isolating affection) The horizontal rigidity of support has rubber material hardness more than 70 Shao A so as to cause the decline of isolating affection currently on the market High-damping support.Meanwhile with the raising of fire safety demands, more and more use occasions require rubber material used now Material has the populations gathering place rubber material such as anti-flammability, especially building field, subway high-speed train.So preparing such While the key of high-damping rubber is rubber material with soft (Shao 35-40 A) there is good mechanical property (to stretch Intensity and elongation at break etc.), high damping, anti-flammability, with the good cementability of metalwork.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of low modulus, the building of high-damping for the above-mentioned prior art Shock insulation rubber and its preparation method of compression molding.
The present invention solves the above problems used technical solution are as follows: a kind of low modulus high damping rubber for building, including The raw material of following mass parts
100 parts of raw rubber matrix,
10-50 parts of carbon black,
5-30 parts of plasticizer,
10-50 parts of fire retardant,
Filler 2-20 parts of damping,
2-5 parts of anti-aging agent,
2-10 parts of antioxidant,
5-15 parts of crosslinking agent,
Raw rubber matrix used in the present invention is halogenated butyl rubber, can be chlorinated scoline or brombutyl. In general purpose rubber, due to its unique molecular structure, the damping capacity of butyl rubber is optimal, but the sulfurate activity of butyl rubber It is relatively low, it is also poor with mutual viscosity from stickiness.Then the appearance of chlorinated scoline and brombutyl is expanded significantly The application of butyl rubber.The halogen content of heretofore described halogenated butyl rubber is 1.2-1.3wt%, and Mooney point is in 125 DEG C of ML It is 30-60 under (1+8).It is preferred that Exxon company production chlorinated scoline 1066 or 1068 with brombutyl 2222 or 2244。
The partial size of carbon black used in the present invention is 10-30nm, can select the high structures such as the conventional trade mark N110, N220 or N234 One or more of fine particle carbon black is used in combination.The partial size of filler is smaller, and specific surface area is bigger, then the contact table with rubber molecule Face increases, and physical bond point is more, hysteresis loss is generated in dynamic strain, and the friction between particle also can be because of surface area Increase and increase, therefore shows that fissipation factor tan σ is larger, and damping capacity is also preferable.
Fire retardant used in the present invention is the mixture of antimony oxide and zinc borate.Chlorinated scoline or brominated butyl Itself contain halogen, therefore there is preferable flame retardant effect, antimony containing compounds are added in rubber can form halogen antimony fire retardant System, effectively can further promote flame retardant property；The fire retarding synergists such as zinc borate are added in rubber, can more rubber be promoted to fire When burning is to be conducive to improve flame retardant property at charcoal shape.
Damping filler of the present invention is that flake graphite alkene, fatty acid metal salts or both are used in combination.Flake graphite alkene Due to can largely consume external mechanical energy when Relative sliding friction occurs for its special planar structure and rubber matrix, to reach To the effect for increasing composite material damping capacity.It is preferred that radius-thickness ratio is greater than 300 flake graphite alkene.Fatty acid metal salts and CIIR Rubber matrix compatibility is preferable, but small organic molecule amount segment therein can hinder the macromolecular chain of CIIR to move, and make loss peak Peak value increases, and widens effective damping temperature range.The preferential quantity molecular weight of fatty acid metal salts is between 1000-3000.Meanwhile fat The addition of acid metal salt can suitably reduce the hardness of rubber material, to guarantee the low modulus of shock isolating pedestal
Anti-aging agent of the present invention is 2,2'- methylene-bis- (4- methyl-6-tert-butylphenol) (2246), acetone With diphenylamines pyroreaction object (BLE), 2,2,4- trimethyl -1,2- dihyaroquinoline condensates (RD), N- isopropyl-N '-benzene One of base p-phenylenediamine (4010NA) and microwax are used in combination.
Antioxidant of the present invention is polynary Hinered phenols antioxidant, and common kind is AO-60 or AO-80.Such Hindered phenol antioxygen not only can delay or inhibit the oxidation process of composite material, and with the damping and amortization that can promote composite material Energy.Very strong intermolecular force is formd between polynary Hinered phenols antioxidant and rubber matrix, makes the glass of composite material Change temperature substantial increase, is enriched present in composite system and complicated hydrogen bond action has composite material very well Damping capacity.
Crosslinking agent of the present invention is bromination alkyl phenolic resin and zinc oxide.There are many crosslinkings for halogenated butyl rubber Mode, the present invention is based on bromination alkyl phenolic resin and uses a small amount of zinc oxide as crosslinking agent, to obtain lower crosslinking Degree and ageing-resistant performance.
The preparation method of above-mentioned low modulus high damping rubber for building is first to use open mill or mixer by raw rubber matrix Logical 5-10 times thin, then in proportion successively by carbon black, plasticizer, fire retardant, anti-aging agent, antioxidant, damping filler and crosslinking agent It is added and is uniformly mixed；Wherein when adding antioxidant, melting temperature control is at 100-120 DEG C, the melting temperature control of remaining time System is at 70 DEG C hereinafter, overall mixing time control was at 10-20 minutes；Then appropriate rubber compound is put into corresponding mould, flat Sulfidization molding in plate vulcanizer；Pressure is 100-150kgf/cm2, curing temperature is 150-170 DEG C, vulcanization time 300-600 points Clock.
It makes a living matrix body compared with the prior art, the advantages of the present invention are as follows: halogenated butyl rubber, cooperates graphene, rouge Fat acid metal salt is damping filler, obtains a kind of isolation rubber of the low modulus of high-damping, and hardness exists while having high-damping 35 to 40 Shao A, horizontal rigidity is low, will not reduce isolating affection.Entire rubber support has good while with soft Mechanical property, high damping, anti-flammability, with the good cementability of metalwork.
Specific embodiment
Present invention is further described in detail with reference to embodiments.
Embodiment 1
Each component and mass fraction are as follows: 1068,100 parts of CIIR；N220,20 parts；Flake graphite alkene, 5 parts；Fatty acid calcium Salt, 10 parts；Antimony oxide, 15 parts；Zinc borate, 5 parts；Dioctyl sebacate DOS, 15 parts；Antioxidant AO-60,10 parts；It is anti-old Agent 2246/BLE/4010NA number is respectively 1.5/1.5/1；Other fatty acid metal salts, 5 parts；Zinc oxide, 5 parts.
Embodiment 2:
Each component and mass fraction are as follows: 2244,100 parts of BIIR；N110,25 parts；Flake graphite alkene, 10 parts；Sodium soap Salt, 10 parts；Antimony oxide, 10 parts；Zinc borate, 10 parts；Dioctyl adipate DOA, 20 parts；Antioxidant AO-80,10 parts；It is anti- Old agent 2246/BLE/4010NA number is respectively 1.5/1.5/1；5 parts of bromination alkyl phenolic resin WL.
Embodiment 3:
Each component and mass fraction are as follows: 2244,100 parts of BIIR；N110,20 parts；Flake graphite alkene, 15 parts；Three oxidations two Antimony, 20 parts；Zinc borate, 10 parts；Antioxidant AO-80,5 parts；Antioxidant 2246/BLE/4010NA number is respectively 1.5/1.5/1； Fatty acid metal salts, 10 parts；Zinc oxide, 3 parts；1 part of bromination alkyl phenolic resin WL.
Comparative example 1:
It repeats to disclose in patent " a kind of wide temperature zone high damping rubber composition and preparation method thereof " (CN102675705A) Embodiment 1.At 40 DEG C, by 100 parts of standard particle glue, 50 parts of isoprene rubber, the Isosorbide-5-Nitrae-that cis-configuration content is 92-97% For polybutadiene configuration in 90% mass fraction, the cis-configuration content of rule 1,2- butadiene 3-20% mass fraction is 92-97%'s 60 parts of butadiene rubber are separately added into mixer, after the 20min that plasticates, are blended；Softening point is added to the blending broken-down rubber again It is 120 DEG C, relative density 1g/cm3, acid value is 80 parts of copolymerized petroleum resin, the strong powder 40 of 1500 mesh magnesium of 0.5mg KOH/g Part, 110 140 parts of carbon black, 8 parts of Sulfur, vulcanization accelerator N- thiacyclohexane -2 parts of 2-[4-morpholinodithio, 12 parts of activating agent magnesia, Anti-aging agent N- isopropyl-N ' -2 parts of diphenyl-para-phenylene diamine, is prepared into rubber compound；After the rubber compound is placed 10h, then 100 DEG C, pressure vulcanizes 60min under the conditions of 20MPa on vulcanizing press, obtains wide temperature zone high damping building rubber compound of the present invention Object.
Comparative example 2:
Repeat the embodiment in patent " a kind of preparation method of chlorinated butyl rubber damping material " (CN102030951A) 3.75 grams and 25 grams of C5/C9 copolymerized petroleum resin of chlorinated scoline are put into mixer, is kneaded 3-5 minutes, is then placed in It 20 grams of white carbon black, is kneaded 3-5 minutes, places into 3 grams of zinc oxide, 2,2-, bis- 0.5 gram of thio benzothiazole, tetramethyl autumn 0.6 gram of blue nurse is kneaded 3-5 minutes, obtains sizing material.The mold of 1 millimeters thick is placed in 156 DEG C of vulcanizing press and preheats 30 points Then the sizing material is put into mold by clock, vulcanize 30 minutes at 160 DEG C, 15MPa, and chlorinated butyl is made and C5/C9 is copolymerized The damping rubber piece of Petropols.
Comparative example 3:
Implementation under repeating in patent " shock mount high-intensity high-damping rubber composite material " (CN104497366A) Example 1.At room temperature, 100 parts by weight of natural rubber are plasticated 1 minute on double rod open mills；Sequentially add the oxidation of 5 parts by weight Zinc, 2 parts by weight stearic acid, different weight part (7,9,12) carbon nanotube FloTube7000 (are denoted as embodiment 1, reality respectively Apply example 2, embodiment 3), 21 parts by weight of carbon black per N774, be kneaded 4 minutes；Sequentially add 2 parts by weight antioxidant 4010NAs, 1 weight Measure part anti-aging agent RD, 10 parts by weight coumarone indene resins, 10 parts by weight Petropols, 0.75 parts by weight anti-recovery agent PK900 is kneaded 3 minutes；Sequentially add 0.2 parts by weight tetramethylthiuram disulfide (TT), 0.3 parts by weight curing two Benzothiazole (DM), 0.3 parts by weight N- cyclohexyl -2- benzothiazole sulfenamide (CZ), 1.5 parts by weight sulphur are kneaded 2 Minute；Adjusting roll spacing is minimum roll spacing, continues to be kneaded 3 minutes dumpings, it is compound that unvulcanized natural rubber/carbon nanotube is made Material rubber compound is put into 2mm mold, vulcanizes in vulcanizing press, and vulcanizate is made, and curing temperature is set as 143 DEG C, Pressure is set as 15MPa, and vulcanization time is respectively 12 minutes, 11 minutes, 9 minutes.
Table 1 is the rubber performance data comparison of embodiment and comparative example
Material performance test method: according to the mechanical property of GB/T 528-1998 measurement material；According to GB/T 2406-93 Measure the oxygen index (OI) of the material；The peel strength of material and metalwork is measured according to GB/T 13936-92；It is selected suitable vertical Loading force (10-15MPa) is measured with suitable sine wave freuqency (0.1-1Hz) using high-damping shock insulation made by the present invention The equivalent damping ratio of support.
In conclusion using high-damping shock insulation made by low modulus high damping rubber material for building of the present invention Support has good mechanical property and damps equivalent ratio, and isolating affection is excellent, can substitute traditional high-damping containing lead for retractable pencil every Shake support.

Claims (8)

1. a kind of low modulus high damping rubber for building, it is characterised in that: the raw material including following mass parts
100 parts of raw rubber matrix,
10-50 parts of carbon black,
5-30 parts of plasticizer,
10-50 parts of fire retardant,
Filler 2-20 parts of damping,
2-5 parts of anti-aging agent,
2-10 parts of antioxidant,
5-15 parts of crosslinking agent,
The raw rubber matrix is halogenated butyl rubber, and the halogenated butyl rubber is chlorinated scoline or brombutyl；
The damping filler is that both graphene, fatty acid metal salts are used in combination, and the two mass ratio is 1:3 or 1:1.
2. low modulus high damping rubber for building according to claim 1, it is characterised in that: the halogenated butyl rubber Halogen content is 1.2-1.3wt%, and Mooney point is 30-60 under 125 DEG C of ML (1+8).
3. low modulus high damping rubber for building according to claim 1, it is characterised in that: the carbon black be N110, N220 or N234 fine particle carbon black, partial size 10-30nm.
4. low modulus high damping rubber for building according to claim 1, it is characterised in that: the fire retardant is three oxidations The mixture of two antimony and zinc borate.
5. low modulus high damping rubber for building according to claim 1, it is characterised in that: the anti-aging agent is 2,2'- Methylene-bis- (4- methyl-6-tert-butylphenols), acetone and diphenylamines pyroreaction object, 2,2,4- trimethyl -1,2- dihydros Quinoline condensate, N- isopropyl-N '-one of diphenyl-para-phenylene diamine and microwax are used in combination.
6. low modulus high damping rubber for building according to claim 1, it is characterised in that: the antioxidant be it is polynary by Hindered phenol type anti-oxidant.
7. low modulus high damping rubber for building according to claim 1, it is characterised in that: the crosslinking agent is bromination alkane Base phenolic resin or zinc oxide.
8. a kind of method for preparing low modulus high damping rubber for building described in claim 1, it is characterised in that: first use mill Machine or mixer fill out raw rubber matrix logical 5-10 times thin, then by carbon black, plasticizer, fire retardant, anti-aging agent, antioxidant, damping Material sequentially adds in proportion with crosslinking agent to be uniformly mixed；Wherein when adding antioxidant, melting temperature is controlled at 100-120 DEG C, The melting temperature of remaining time is controlled at 70 DEG C hereinafter, overall mixing time was controlled at 10-20 minutes；Then by appropriate rubber compound It is put into corresponding mould, the sulfidization molding in vulcanizing press；Pressure is 100-150kgf/cm2, curing temperature 150-170 DEG C, vulcanization time 300-600 minutes.
CN201611206807.6A 2016-12-23 2016-12-23 A kind of low modulus high damping rubber for building and preparation method thereof Active CN106751068B (en)

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CN108276688B (en) * 2018-03-23 2020-06-30 常州大学 Graphene flame-retardant constraint damping sheet for vehicle and preparation method thereof
CN108752765B (en) * 2018-06-12 2022-03-25 广东美的制冷设备有限公司 Damping composition and preparation method and application thereof
CN108484215A (en) * 2018-06-25 2018-09-04 广东复特新型材料科技有限公司 A kind of heat preservation and soundproof mortar and preparation method thereof
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CN111303544B (en) * 2020-04-14 2022-06-21 国光电器股份有限公司 Flame-retardant high-damping rubber composition and preparation method and application thereof
CN112300525B (en) * 2020-10-27 2021-07-23 中国科学院金属研究所 graphene/SEBS composite material with high strength and high damping characteristic and preparation method thereof
CN112266540A (en) * 2020-10-29 2021-01-26 新力紧科技(深圳)有限公司 Low-modulus ultrahigh-damping elastic material for building rubber support
CN114015169A (en) * 2021-11-09 2022-02-08 深圳陆祥科技股份有限公司 Flame-retardant high-damping rubber and preparation method of damping cushion thereof
CN115521514B (en) * 2022-09-28 2023-12-19 北京航空材料研究院股份有限公司 Rubber compound, rubber layer, damping structure and preparation method thereof

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